* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    touch-action: manipulation;
}

:root {
    --primary-gradient: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
    --danger-gradient: linear-gradient(135deg, #fb7185 0%, #e11d48 100%);
    --surface-gradient: linear-gradient(180deg, rgba(30, 41, 59, 0.92) 0%, rgba(15, 23, 42, 0.96) 100%);
    --accent-blue: #60a5fa;
    --accent-blue-strong: #3b82f6;
    --dark-bg: #020617;
    --card-bg: rgba(15, 23, 42, 0.78);
    --input-bg: rgba(15, 23, 42, 0.94);
    --surface-strong: rgba(15, 23, 42, 0.98);
    --text-light: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: rgba(148, 163, 184, 0.18);
    --border-strong: rgba(148, 163, 184, 0.28);
    --success: #10b981;
    --shadow-soft: 0 18px 42px rgba(2, 6, 23, 0.28);
    --shadow-card: 0 10px 24px rgba(2, 6, 23, 0.2);
    --page-glow-top: rgba(59, 130, 246, 0.14);
    --page-glow-bottom: rgba(16, 185, 129, 0.08);
    --page-bg: var(--dark-bg);
    --header-bg: linear-gradient(135deg, rgba(96, 165, 250, 0.18), rgba(37, 99, 235, 0.08));
    --header-border: rgba(148, 163, 184, 0.12);
    --menu-avatar-bg: linear-gradient(180deg, rgba(96, 165, 250, 0.22), rgba(37, 99, 235, 0.18));
    --menu-avatar-border: rgba(96, 165, 250, 0.24);
    --menu-popover-bg: linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(2, 6, 23, 0.96));
    --nav-bg: rgba(15, 23, 42, 0.48);
    --auth-card-bg: radial-gradient(circle at top right, rgba(96, 165, 250, 0.18), transparent 28%), linear-gradient(180deg, rgba(30, 41, 59, 0.95), rgba(15, 23, 42, 0.98));
    --auth-card-border: rgba(96, 165, 250, 0.14);
    --auth-shell-bg: linear-gradient(180deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.86));
    --toggle-surface: rgba(255,255,255,0.045);
    --toggle-surface-border: rgba(148, 163, 184, 0.16);
    --toggle-surface-hover: rgba(96, 165, 250, 0.12);
    --switch-track-bg: rgba(255,255,255,0.06);
    --switch-track-border: rgba(148, 163, 184, 0.18);
    --switch-thumb-bg: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(226, 232, 240, 0.92));
    --switch-thumb-shadow: 0 5px 14px rgba(2, 6, 23, 0.24);
    --panel-bg: linear-gradient(180deg, rgba(30, 41, 59, 0.74), rgba(15, 23, 42, 0.94));
    --panel-border: rgba(148, 163, 184, 0.14);
    --tile-bg: rgba(255,255,255,0.03);
    --tile-bg-soft: rgba(255,255,255,0.025);
    --tile-border: rgba(148, 163, 184, 0.14);
    --tile-border-soft: rgba(148, 163, 184, 0.12);
    --list-item-bg: rgba(2, 6, 23, 0.28);
    --list-item-border: rgba(148, 163, 184, 0.1);
    --history-header-bg: rgba(255,255,255,0.02);
    --history-month-title: rgba(226, 232, 240, 0.9);
    --history-collapse-bg: rgba(255,255,255,0.04);
    --history-collapse-stroke: rgba(226, 232, 240, 0.88);
    --month-input-bg: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(15, 23, 42, 0.42));
    --month-input-hover-bg: linear-gradient(180deg, rgba(96, 165, 250, 0.08), rgba(15, 23, 42, 0.5));
    --modal-backdrop-bg: linear-gradient(180deg, rgba(2, 6, 23, 0.32), rgba(2, 6, 23, 0.42));
    --overview-card-bg: linear-gradient(180deg, rgba(96, 165, 250, 0.12), rgba(15, 23, 42, 0.38));
    --overview-card-shadow: 0 10px 22px rgba(2, 6, 23, 0.14);
    --tag-bg: rgba(255,255,255,0.025);
    --tag-hover-bg: rgba(102, 126, 234, 0.15);
    --control-surface: rgba(255,255,255,0.02);
    --control-surface-strong: rgba(255,255,255,0.03);
    --control-surface-gradient: linear-gradient(180deg, rgba(255,255,255,0.075), rgba(255,255,255,0.03));
    --control-surface-gradient-collapsed: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    --row-bg: rgba(255,255,255,0.025);
    --muted-group-bg: rgba(148, 163, 184, 0.08);
        --save-cta-bg: linear-gradient(180deg, rgba(30, 41, 59, 0.96) 0%, rgba(15, 23, 42, 0.98) 100%);
        --save-cta-border: rgba(148, 163, 184, 0.24);
        --save-cta-hover-border: rgba(96, 165, 250, 0.28);
        --save-cta-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 16px 32px rgba(2, 6, 23, 0.28);
        --save-cta-hover-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 18px 34px rgba(2, 6, 23, 0.34);
        --save-cta-disabled-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 10px 24px rgba(2, 6, 23, 0.22);
        --save-cta-text: var(--text-light);
        --save-cta-text-shadow: 0 1px 1px rgba(2, 6, 23, 0.18);
}

:root[data-theme="light"] {
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #60a5fa 100%);
    --danger-gradient: linear-gradient(135deg, #f43f5e 0%, #fb7185 100%);
    --surface-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(241, 245, 249, 0.98) 100%);
    --accent-blue: #2563eb;
    --accent-blue-strong: #1d4ed8;
    --dark-bg: #eef4ff;
    --card-bg: rgba(255, 255, 255, 0.96);
    --input-bg: rgba(255, 255, 255, 0.98);
    --surface-strong: rgba(255, 255, 255, 0.99);
    --text-light: #0f172a;
    --text-muted: #334155;
    --border-color: rgba(100, 116, 139, 0.34);
    --border-strong: rgba(100, 116, 139, 0.48);
    --shadow-soft: 0 18px 42px rgba(100, 116, 139, 0.24);
    --shadow-card: 0 12px 28px rgba(100, 116, 139, 0.18);
    --page-glow-top: rgba(59, 130, 246, 0.16);
    --page-glow-bottom: rgba(14, 165, 233, 0.08);
    --page-bg: #eef4ff;
    --header-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(226, 232, 240, 0.94));
    --header-border: rgba(100, 116, 139, 0.24);
    --menu-avatar-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(219, 234, 254, 0.92));
    --menu-avatar-border: rgba(96, 165, 250, 0.26);
    --menu-popover-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(241, 245, 249, 0.97));
    --nav-bg: rgba(255, 255, 255, 0.9);
    --auth-card-bg: radial-gradient(circle at top right, rgba(96, 165, 250, 0.12), transparent 28%), linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(241, 245, 249, 0.98));
    --auth-card-border: rgba(96, 165, 250, 0.18);
    --auth-shell-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.94));
    --toggle-surface: rgba(148, 163, 184, 0.08);
    --toggle-surface-border: rgba(148, 163, 184, 0.22);
    --toggle-surface-hover: rgba(96, 165, 250, 0.08);
    --switch-track-bg: rgba(148, 163, 184, 0.18);
    --switch-track-border: rgba(148, 163, 184, 0.24);
    --switch-thumb-bg: linear-gradient(180deg, rgba(255,255,255,1), rgba(248, 250, 252, 0.96));
    --switch-thumb-shadow: 0 5px 14px rgba(148, 163, 184, 0.28);
    --panel-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.99), rgba(241, 245, 249, 1));
    --panel-border: rgba(100, 116, 139, 0.2);
    --tile-bg: rgba(255, 255, 255, 0.96);
    --tile-bg-soft: rgba(255,255,255,0.94);
    --tile-border: rgba(100, 116, 139, 0.24);
    --tile-border-soft: rgba(100, 116, 139, 0.2);
    --list-item-bg: rgba(255, 255, 255, 0.96);
    --list-item-border: rgba(100, 116, 139, 0.2);
    --history-header-bg: rgba(255, 255, 255, 0.96);
    --history-month-title: rgba(71, 85, 105, 0.94);
    --history-collapse-bg: rgba(255,255,255,0.9);
    --history-collapse-stroke: rgba(71, 85, 105, 0.86);
    --month-input-bg: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(241, 245, 249, 0.96));
    --month-input-hover-bg: linear-gradient(180deg, rgba(219, 234, 254, 0.88), rgba(239, 246, 255, 0.96));
    --modal-backdrop-bg: linear-gradient(180deg, rgba(226, 232, 240, 0.58), rgba(203, 213, 225, 0.7));
    --overview-card-bg: linear-gradient(180deg, rgba(219, 234, 254, 0.92), rgba(239, 246, 255, 0.98));
    --overview-card-shadow: 0 10px 22px rgba(148, 163, 184, 0.16);
    --tag-bg: rgba(255,255,255,0.92);
    --tag-hover-bg: rgba(219, 234, 254, 0.92);
    --control-surface: rgba(255,255,255,0.94);
    --control-surface-strong: rgba(248, 250, 252, 0.98);
    --control-surface-gradient: linear-gradient(180deg, rgba(255,255,255,1), rgba(241, 245, 249, 0.96));
    --control-surface-gradient-collapsed: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(248, 250, 252, 0.94));
    --row-bg: rgba(255, 255, 255, 0.96);
    --muted-group-bg: rgba(203, 213, 225, 0.52);
    --save-cta-bg: linear-gradient(180deg, #2563eb 0%, #1d4ed8 100%);
    --save-cta-border: rgba(29, 78, 216, 0.22);
    --save-cta-hover-border: rgba(29, 78, 216, 0.3);
    --save-cta-shadow: inset 0 1px 0 rgba(255,255,255,0.16), 0 14px 30px rgba(37, 99, 235, 0.24);
    --save-cta-hover-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 18px 34px rgba(37, 99, 235, 0.3);
    --save-cta-disabled-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 10px 24px rgba(37, 99, 235, 0.18);
    --save-cta-text: #f8fafc;
    --save-cta-text-shadow: 0 1px 1px rgba(15, 23, 42, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background:
        radial-gradient(circle at top, var(--page-glow-top), transparent 28%),
        radial-gradient(circle at bottom, var(--page-glow-bottom), transparent 24%),
        var(--page-bg);
    color: var(--text-light);
    min-height: 100vh;
    padding: 14px;
}

body.is-boot-restoring main {
    position: relative;
}

body.is-boot-restoring #app-shell {
    opacity: 0.76;
    filter: saturate(0.9);
}

body.is-boot-restoring #app-shell,
body.is-boot-restoring #user-session-bar {
    transition: opacity 0.18s ease, filter 0.18s ease;
}

header {
    position: relative;
    z-index: 80;
    overflow: visible;
    text-align: left;
    margin-bottom: 14px;
    padding: 14px 16px;
    background: var(--header-bg);
    border-radius: 18px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--header-border);
    backdrop-filter: blur(16px);
}

.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    overflow: visible;
}

.header-bar h1 {
    min-width: 0;
    flex: 1;
}

.user-session-bar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-left: auto;
    flex-shrink: 0;
    z-index: 90;
}

.user-menu-btn {
    width: 42px;
    height: 42px;
    min-height: 42px;
    padding: 0;
    border-radius: 50%;
    background: var(--menu-avatar-bg);
    border: 1px solid var(--menu-avatar-border);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 10px 22px rgba(2, 6, 23, 0.18);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.user-menu-btn:hover {
    transform: translateY(-1px) scale(1.03);
}

.current-user-display {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: var(--text-light);
    font-size: 0.98rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.01em;
}

.user-menu-popover {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 230px;
    max-width: min(230px, calc(100vw - 28px));
    padding: 12px;
    border-radius: 16px;
    background: var(--menu-popover-bg);
    border: 1px solid rgba(148, 163, 184, 0.16);
    box-shadow: 0 18px 34px rgba(2, 6, 23, 0.28);
    backdrop-filter: blur(18px);
    z-index: 120;
}

.theme-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 0 0 12px;
    padding: 0 0 12px;
    border-bottom: 1px solid var(--border-color);
}

.theme-toggle-copy {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.theme-toggle-title {
    margin: 0;
    color: var(--text-light);
    font-size: 0.88rem;
    font-weight: 600;
}

.theme-toggle-hint {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.74rem;
    line-height: 1.35;
}

.theme-toggle-btn {
    width: 58px;
    min-width: 58px;
    min-height: 34px;
    padding: 3px;
    border-radius: 999px;
    background: var(--switch-track-bg);
    border: 1px solid var(--switch-track-border);
    box-shadow: none;
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    flex-shrink: 0;
}

.theme-toggle-btn:hover {
    background: rgba(96, 165, 250, 0.16);
    box-shadow: none;
    transform: none;
}

.theme-toggle-btn[aria-checked="true"] {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.92), rgba(37, 99, 235, 0.92));
    border-color: rgba(37, 99, 235, 0.32);
}

.theme-toggle-thumb {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--switch-thumb-bg);
    box-shadow: var(--switch-thumb-shadow);
    transform: translateX(0);
    transition: transform 0.2s ease;
}

.theme-toggle-btn[aria-checked="true"] .theme-toggle-thumb {
    transform: translateX(24px);
}

.current-user-name {
    margin: 0 0 10px;
    color: var(--text-light);
    font-size: 0.92rem;
    font-weight: 600;
}

.logout-btn {
    width: 100%;
    min-height: 38px;
    padding: 8px 12px;
}

header h1 {
    font-size: 1.4rem;
    margin: 0;
    font-weight: 650;
    color: var(--text-light);
    letter-spacing: -0.03em;
}

main {
    max-width: 760px;
    margin: 0 auto;
}

/* --- Navegación Principal --- */
#main-nav {
    --nav-highlight-x: 6px;
    --nav-highlight-y: 6px;
    --nav-highlight-width: 120px;
    --nav-highlight-height: 42px;
    display: flex;
    gap: 6px;
    margin-bottom: 14px;
    padding: 6px;
    background: var(--nav-bg);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    position: sticky;
    top: 10px;
    z-index: 20;
    isolation: isolate;
    overflow: hidden;
    touch-action: none;
    box-shadow:
        0 4px 24px rgba(0, 0, 0, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

/* Refraction edge glow – iOS 27 prismatic border */
#main-nav::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background:
        linear-gradient(
            135deg,
            rgba(255, 80, 80, 0.28) 0%,
            rgba(255, 180, 50, 0.18) 15%,
            rgba(255, 255, 120, 0.16) 28%,
            rgba(100, 255, 140, 0.16) 42%,
            rgba(80, 200, 255, 0.20) 56%,
            rgba(120, 130, 255, 0.22) 70%,
            rgba(200, 100, 255, 0.20) 85%,
            rgba(255, 80, 120, 0.18) 100%
        );
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask-composite: exclude;
    pointer-events: none;
    z-index: 3;
    opacity: 0.6;
}

#main-nav::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: var(--nav-highlight-width);
    height: var(--nav-highlight-height);
    transform: translate3d(var(--nav-highlight-x), var(--nav-highlight-y), 0);
    border-radius: 14px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0.04) 100%),
        linear-gradient(135deg, rgba(96, 165, 250, 0.16) 0%, rgba(139, 92, 246, 0.06) 50%, rgba(255, 255, 255, 0.02) 100%);
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow:
        inset 0 1px 1px rgba(255, 255, 255, 0.22),
        inset 0 -1px 1px rgba(0, 0, 0, 0.06),
        0 8px 32px rgba(2, 6, 23, 0.22),
        0 2px 8px rgba(96, 165, 250, 0.08);
    backdrop-filter: blur(28px) saturate(180%) brightness(1.08);
    -webkit-backdrop-filter: blur(28px) saturate(180%) brightness(1.08);
    transition:
        transform 0.38s cubic-bezier(0.25, 1, 0.5, 1),
        width 0.3s cubic-bezier(0.25, 1, 0.5, 1),
        height 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    z-index: 0;
    will-change: transform;
}

#main-nav.is-dragging::before {
    transition: none;
}

.nav-btn {
    flex: 1;
    background: transparent;
    color: var(--text-light);
    border: 1px solid transparent;
    box-shadow: none;
    opacity: 0.68;
    min-height: 42px;
    padding: 10px 6px;
    border-radius: 14px;
    position: relative;
    z-index: 1;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
    transition: opacity 0.25s ease;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-btn:hover {
    opacity: 1;
    border-color: transparent;
}

#main-nav.is-dragging .nav-btn {
    pointer-events: none;
}

.nav-btn.active {
    opacity: 1;
    border-color: transparent;
    box-shadow: none;
}

/* --- Secciones --- */

section {
    margin-bottom: 14px;
    padding: 18px;
    background: var(--surface-gradient);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(16px);
    animation: sectionFadeIn 0.24s ease-out;
    will-change: opacity, transform;
}

@keyframes sectionFadeIn {
    from { opacity: 0.94; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

section h2 {
    margin-bottom: 14px;
    color: var(--text-light);
    padding-bottom: 0;
    font-size: 1.12rem;
    font-weight: 650;
    letter-spacing: -0.02em;
}

.section-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
    min-width: 0;
}

.section-header-row h2 {
    margin-bottom: 4px;
}

.section-header-row > div {
    min-width: 0;
}

.section-subcopy {
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.4;
}

.section-toggle-btn {
    width: auto;
    min-width: 124px;
    min-height: 40px;
    flex-shrink: 0;
    max-width: 100%;
}

#auth-view {
    max-width: 520px;
    margin: 24px auto 0;
    background: var(--auth-card-bg);
    border-color: var(--auth-card-border);
    box-shadow: 0 22px 44px rgba(2, 6, 23, 0.28);
}

.auth-card-header {
    margin-bottom: 18px;
}

.auth-kicker {
    display: inline-flex;
    margin-bottom: 10px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(96, 165, 250, 0.14);
    color: var(--accent-blue);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 700;
}

.auth-copy {
    margin-bottom: 16px;
    color: var(--text-muted);
    line-height: 1.5;
}

#auth-form {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.auth-field-group {
    margin-bottom: 12px;
}

.auth-input-shell {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 6px 4px 12px;
    border-radius: 16px;
    background: var(--auth-shell-bg);
    border: 1px solid rgba(148, 163, 184, 0.16);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.auth-input-shell:focus-within {
    border-color: rgba(96, 165, 250, 0.44);
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.12), inset 0 1px 0 rgba(255,255,255,0.05);
    transform: translateY(-1px);
}

.auth-input-icon {
    width: 18px;
    color: var(--accent-blue);
    font-size: 0.9rem;
    font-weight: 700;
    text-align: center;
    opacity: 0.9;
}

.auth-input-shell input {
    width: auto;
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    box-shadow: none;
    padding: 12px 8px 12px 0;
}

.auth-input-shell input:focus {
    box-shadow: none;
}

.auth-password-shell {
    padding-right: 6px;
}

.toggle-password-btn {
    width: auto;
    min-height: 38px;
    min-width: 74px;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--toggle-surface);
    border: 1px solid var(--toggle-surface-border);
    color: var(--text-light);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
    font-size: 0.76rem;
    font-weight: 700;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    letter-spacing: 0.02em;
}

.toggle-password-btn:hover {
    background: var(--toggle-surface-hover);
    border-color: rgba(96, 165, 250, 0.26);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

.toggle-password-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.toggle-password-glyph {
    width: 16px;
    height: 16px;
    border-radius: 999px;
    position: relative;
    display: inline-block;
}

.toggle-password-glyph::before {
    content: '';
    position: absolute;
    inset: 3px 1px;
    border: 1.7px solid currentColor;
    border-radius: 12px 12px 9px 9px;
    transform: rotate(0deg);
    opacity: 0.9;
}

.toggle-password-glyph::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: currentColor;
    top: 6px;
    left: 6px;
}

.toggle-password-btn[data-visible="true"] {
    background: rgba(96, 165, 250, 0.14);
    border-color: rgba(96, 165, 250, 0.28);
    color: #dbeafe;
}

.toggle-password-btn[data-visible="true"] .toggle-password-glyph::before {
    inset: 7px -1px;
    width: 18px;
    height: 2px;
    border: none;
    background: currentColor;
    border-radius: 999px;
    transform: rotate(-32deg);
    opacity: 0.95;
}

.toggle-password-btn[data-visible="true"] .toggle-password-glyph::after {
    width: 8px;
    height: 8px;
    top: 4px;
    left: 4px;
    background: transparent;
    border: 1.6px solid currentColor;
}

.auth-actions {
    display: flex;
    gap: 10px;
    margin-top: 4px;
}

.auth-actions button {
    flex: 1;
}

.auth-status {
    margin-top: 12px;
    min-height: 20px;
    font-size: 0.84rem;
    color: var(--text-muted);
    display: none;
}

.auth-status.is-visible {
    display: block;
}

.auth-status[data-tone="muted"] {
    color: var(--text-muted);
}

.auth-status[data-tone="success"] {
    color: #86efac;
}

.auth-status[data-tone="warning"] {
    color: #fcd34d;
}

.hidden {
    display: none;
}

.form-group {
    margin-bottom: 14px;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

input[type="text"],
input[type="date"],
input[type="number"],
select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    font-size: 0.97rem;
    background: var(--input-bg);
    color: var(--text-light);
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

:root[data-theme="light"] .user-menu-btn {
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.85), 0 10px 22px rgba(148, 163, 184, 0.22);
}

:root[data-theme="light"] .user-menu-popover {
    box-shadow: 0 18px 34px rgba(148, 163, 184, 0.24);
}

:root[data-theme="light"] #main-nav {
    border-color: rgba(148, 163, 184, 0.18);
    box-shadow: 0 4px 24px rgba(148, 163, 184, 0.16), inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

:root[data-theme="light"] #main-nav::before {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(219, 234, 254, 0.82) 100%), linear-gradient(135deg, rgba(96, 165, 250, 0.18) 0%, rgba(37, 99, 235, 0.08) 100%);
    border: 1px solid rgba(96, 165, 250, 0.18);
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.84), inset 0 -1px 1px rgba(148, 163, 184, 0.08), 0 8px 28px rgba(148, 163, 184, 0.18), 0 2px 8px rgba(96, 165, 250, 0.1);
}

:root[data-theme="light"] #main-nav::after {
    opacity: 0.38;
}

:root[data-theme="light"] .nav-btn {
    color: var(--text-light);
}

:root[data-theme="light"] #auth-view {
    box-shadow: 0 22px 44px rgba(148, 163, 184, 0.22);
}

:root[data-theme="light"] .auth-input-shell {
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.78);
}

:root[data-theme="light"] button:hover {
    box-shadow: 0 12px 22px rgba(148, 163, 184, 0.22);
}

:root[data-theme="light"] .edit-groups-btn {
    background: rgba(255,255,255,0.92);
    border-color: rgba(148, 163, 184, 0.24);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.84), 0 10px 20px rgba(148, 163, 184, 0.16);
    color: var(--text-muted);
}

:root[data-theme="light"] .exercise-card {
    background: rgba(255, 255, 255, 0.98);
    border-color: rgba(148, 163, 184, 0.16);
    box-shadow: 0 8px 18px rgba(148, 163, 184, 0.12);
}

:root[data-theme="light"] .set-row {
    border: 1px solid rgba(100, 116, 139, 0.24);
    border-left-width: 2px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.52);
}

:root[data-theme="light"] .confirm-set-btn {
    background: rgba(96, 165, 250, 0.22);
    border-color: rgba(96, 165, 250, 0.3);
    color: rgba(29, 78, 216, 0.92);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.42);
}

:root[data-theme="light"] .confirm-set-btn:hover {
    background: rgba(96, 165, 250, 0.3);
    border-color: rgba(59, 130, 246, 0.36);
    color: rgba(29, 78, 216, 1);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.5);
}

:root[data-theme="light"] .set-row.completed {
    border-color: rgba(100, 116, 139, 0.24);
    border-left-color: var(--success);
}

:root[data-theme="light"] .set-row.completed .confirm-set-btn,
:root[data-theme="light"] .set-row.completed .confirm-set-btn:hover {
    background: var(--success);
    color: white;
    border-color: transparent;
    box-shadow: none;
}

:root[data-theme="light"] .exercise-card:hover {
    box-shadow: 0 10px 22px rgba(148, 163, 184, 0.15);
    border-color: rgba(96, 165, 250, 0.14);
}

:root[data-theme="light"] .exercise-history-btn {
    background: rgba(255,255,255,0.9);
    border-color: rgba(148, 163, 184, 0.2);
}

:root[data-theme="light"] .edit-groups-btn:hover {
    background: rgba(239, 246, 255, 0.96);
}

:root[data-theme="light"] .edit-groups-icon {
    background: linear-gradient(180deg, rgba(219, 234, 254, 0.96), rgba(191, 219, 254, 0.88));
    border-color: rgba(37, 99, 235, 0.2);
}

:root[data-theme="light"] .edit-groups-icon::before,
:root[data-theme="light"] .edit-groups-icon::after {
    background: rgba(30, 64, 175, 0.82);
}

:root[data-theme="light"] .edit-groups-label {
    color: var(--text-muted);
}

:root[data-theme="light"] .toggle-exercise-btn {
    background: rgba(255,255,255,0.92);
    border-color: rgba(148, 163, 184, 0.22);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.88), 0 8px 16px rgba(148, 163, 184, 0.14);
}

:root[data-theme="light"] .toggle-exercise-btn:hover {
    background: rgba(239, 246, 255, 0.98);
}

:root[data-theme="light"] .secondary-btn {
    background: rgba(255,255,255,0.9);
    border-color: var(--border-strong);
    color: var(--text-light);
}

:root[data-theme="light"] .secondary-btn:hover {
    background: rgba(255,255,255,0.98);
}

:root[data-theme="light"] input[type="text"],
:root[data-theme="light"] input[type="date"],
:root[data-theme="light"] input[type="number"],
:root[data-theme="light"] select {
    background: rgba(255,255,255,0.99);
    border-color: var(--border-strong);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.88);
}

:root[data-theme="light"] input[type="text"]::placeholder,
:root[data-theme="light"] input[type="date"]::placeholder,
:root[data-theme="light"] input[type="number"]::placeholder {
    color: rgba(51, 65, 85, 0.56);
}

:root[data-theme="light"] #workout-header {
    background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(239, 246, 255, 0.92));
    border-color: rgba(96, 165, 250, 0.2);
    box-shadow: 0 10px 24px rgba(100, 116, 139, 0.16);
}

:root[data-theme="light"] #view-history-btn,
:root[data-theme="light"] #cancel-workout-btn {
    border-color: var(--border-strong);
    color: var(--text-light);
}

:root[data-theme="light"] .history-panel-card,
:root[data-theme="light"] .progress-weight-entry-card,
:root[data-theme="light"] .progress-panel {
    box-shadow: 0 12px 28px rgba(100, 116, 139, 0.16);
}

input:focus, select:focus {
    outline: none;
    border-color: rgba(96, 165, 250, 0.55);
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.16);
}

select option {
    background: var(--card-bg);
    color: var(--text-light);
}

button {
    padding: 12px 16px;
    border: 1px solid transparent;
    border-radius: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.16);
    width: 100%;
    min-height: 46px;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 22px rgba(2, 6, 23, 0.2);
}

#workout-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 18px;
    padding: 14px;
    background: rgba(96, 165, 250, 0.06);
    border-radius: 16px;
    border: 1px solid rgba(96, 165, 250, 0.12);
}

.workout-info {
    display: flex;
    flex-direction: column;
    gap: 0;
    min-width: 0;
    flex: 1;
}

.workout-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-width: 0;
}

.workout-title-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex-wrap: wrap;
}

.edit-groups-btn {
    width: auto;
    min-height: 38px;
    padding: 8px 12px;
    background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
    border: 1px solid rgba(148, 163, 184, 0.18);
    color: var(--text-light);
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 10px 20px rgba(2, 6, 23, 0.12);
    flex-shrink: 0;
}

.edit-groups-btn:hover {
    background: linear-gradient(180deg, rgba(96, 165, 250, 0.18), rgba(96, 165, 250, 0.08));
    border-color: rgba(96, 165, 250, 0.3);
}

.edit-groups-icon {
    width: 16px;
    height: 16px;
    position: relative;
    border-radius: 5px;
    background: linear-gradient(180deg, rgba(96, 165, 250, 0.2), rgba(96, 165, 250, 0.08));
    border: 1px solid rgba(96, 165, 250, 0.26);
}

.edit-groups-icon::before,
.edit-groups-icon::after {
    content: '';
    position: absolute;
    left: 3px;
    right: 3px;
    height: 1.5px;
    border-radius: 999px;
    background: rgba(219, 234, 254, 0.9);
}

.edit-groups-icon::before {
    top: 4px;
}

.edit-groups-icon::after {
    bottom: 4px;
}

.edit-groups-label {
    font-size: 0.78rem;
    letter-spacing: 0.02em;
    color: var(--text-light);
}

.workout-type {
    margin: 0;
    padding: 0;
    border: none;
    font-size: 1.4rem;
    font-weight: 680;
    color: var(--accent-blue);
    letter-spacing: -0.03em;
    min-width: 0;
}

.workout-date {
    margin: 0;
    padding: 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 560;
    white-space: nowrap;
}

.save-status {
    margin: 0;
    font-size: 0.78rem;
    color: var(--text-muted);
    display: none;
}

.save-status.is-visible {
    display: block;
}

.save-status[data-tone="success"] {
    color: #86efac;
}

.save-status[data-tone="warning"] {
    color: #fcd34d;
}

.sticky-save-bar {
    margin-top: 18px;
}

#finish-workout-btn {
    width: 100%;
    min-height: 52px;
    padding: 15px 20px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--save-cta-text);
    letter-spacing: 0.02em;
    text-shadow: var(--save-cta-text-shadow);
    background: var(--save-cta-bg);
    border: 1px solid var(--save-cta-border);
    border-radius: 16px;
    box-shadow: var(--save-cta-shadow);
}

#finish-workout-btn:hover {
    border-color: var(--save-cta-hover-border);
    box-shadow: var(--save-cta-hover-shadow);
}

#finish-workout-btn:disabled {
    opacity: 0.72;
    cursor: wait;
    transform: none;
    box-shadow: var(--save-cta-disabled-shadow);
}

#cancel-workout-btn {
    width: auto;
    background: var(--control-surface);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    box-shadow: none;
}

#cancel-workout-btn:hover {
    background: var(--control-surface-strong);
    color: var(--text-light);
    box-shadow: none;
}

.muscle-group-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 12px;
}

.native-select-hint {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.45;
}

.native-select-label {
    margin-bottom: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.native-group-picker-shell {
    position: fixed;
    top: 0;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0.01;
    pointer-events: none;
    overflow: hidden;
}

.muscle-group-native-select {
    min-height: 250px;
    padding: 8px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.88));
    border: 1px solid rgba(148, 163, 184, 0.18);
    color: var(--text-light);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
    appearance: auto;
}

.muscle-group-native-select option {
    padding: 12px 14px;
    border-radius: 12px;
}

.muscle-group-direct-select {
    width: 1px;
    min-width: 1px;
    min-height: 1px;
    height: 1px;
    padding: 0;
    border: 0;
}

.native-group-load-btn {
    display: none;
}

#load-exercises-btn {
    width: 100%;
}

.muscle-group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0;
    padding: 0;
    background: transparent;
    border-left: none;
    border-radius: 0;
    cursor: pointer;
    position: relative;
}

.muscle-group-header::after {
    content: '';
    width: 12px;
    height: 12px;
    flex-shrink: 0;
    margin-left: 10px;
    border-right: 2px solid rgba(148, 163, 184, 0.88);
    border-bottom: 2px solid rgba(148, 163, 184, 0.88);
    transform: rotate(45deg);
    transition: transform 0.24s ease;
}

.muscle-group-section.collapsed .muscle-group-header::after {
    transform: rotate(-45deg);
}

.muscle-group-header h3 {
    margin: 0;
    padding: 0;
    font-size: 1rem;
    color: var(--accent-blue);
    letter-spacing: -0.02em;
    flex: 1;
}

.muscle-group-section {
    margin: 0 0 16px;
    padding: 14px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(96, 165, 250, 0.08), rgba(15, 23, 42, 0.28));
    border: 1px solid rgba(96, 165, 250, 0.14);
    box-shadow: 0 14px 28px rgba(2, 6, 23, 0.16);
}

.muscle-group-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 12px;
    overflow: hidden;
    max-height: 4000px;
    opacity: 1;
    transition: max-height 0.34s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.24s ease, margin-top 0.24s ease;
}

.muscle-group-section.collapsed .muscle-group-body {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    pointer-events: none;
}

.muted-group-section {
    background: linear-gradient(180deg, rgba(148, 163, 184, 0.08), rgba(15, 23, 42, 0.22));
    border-color: rgba(148, 163, 184, 0.16);
}

.delete-muscle-group-btn {
    padding: 6px 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(239, 68, 68, 0.22);
    color: #fda4af;
    font-size: 0.74rem;
    width: auto;
    border-radius: 999px;
    min-height: 34px;
    box-shadow: none;
}

.delete-muscle-group-btn:hover {
    background: rgba(251, 113, 133, 0.12);
    border-color: rgba(251, 113, 133, 0.28);
    color: #ffe4e6;
    transform: translateY(-1px);
}

.selected-types {
    display: block;
    font-size: 0.85em;
    color: var(--text-muted);
    margin-top: 8px;
}

#add-exercise-form {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

#add-exercise-form h3 {
    margin-bottom: 12px;
    font-weight: 600;
    font-size: 0.96rem;
}

#add-exercise-form .form-group {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

#exercise-type-select {
    max-width: 170px;
}

#add-exercise-form button {
    width: auto;
    border: none;
}

.exercise-card {
    background: var(--surface-strong);
    border: 1px solid rgba(255,255,255,0.045);
    border-radius: 16px;
    padding: 14px;
    margin-bottom: 0;
    box-shadow: 0 8px 20px rgba(2, 6, 23, 0.18);
    transition: box-shadow 0.22s ease, border-color 0.22s ease, padding-bottom 0.32s cubic-bezier(0.4, 0, 0.2, 1);
}

.exercise-card:hover {
    box-shadow: 0 10px 26px rgba(2, 6, 23, 0.24);
    border-color: rgba(96, 165, 250, 0.1);
}

.exercise-card.collapsed {
    padding-bottom: 10px;
}

.exercise-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    transition: padding-bottom 0.32s cubic-bezier(0.4, 0, 0.2, 1),
                margin-bottom 0.32s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.24s ease;
    cursor: pointer;
}

.exercise-card.collapsed .exercise-header {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom-color: transparent;
}

.exercise-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-light);
}

.exercise-title-row {
    display: flex;
    align-items: center;
    min-width: 0;
}

.exercise-title-row .exercise-title {
    min-width: 0;
    flex: 1;
}

.exercise-heading {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
    flex: 1;
}

.exercise-history-btn {
    width: 44px;
    height: 44px;
    min-height: 44px;
    min-width: 44px;
    padding: 0;
    border-radius: 50%;
    background: var(--control-surface);
    border: 1px solid rgba(148, 163, 184, 0.14);
    color: var(--text-muted);
    box-shadow: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.exercise-history-btn:hover {
    background: rgba(96, 165, 250, 0.08);
    border-color: rgba(96, 165, 250, 0.22);
    color: var(--text-light);
    transform: translateY(-1px);
    box-shadow: none;
}

.exercise-history-icon {
    width: 16px;
    height: 16px;
    position: relative;
    display: inline-block;
}

.exercise-history-icon::before,
.exercise-history-icon::after {
    content: '';
    position: absolute;
    inset: 0;
}

.exercise-history-icon::before {
    border: 1.8px solid currentColor;
    border-radius: 50%;
}

.exercise-history-icon::after {
    inset: 3px;
    border-radius: 50%;
    background:
        linear-gradient(currentColor, currentColor) center 3px / 1.8px 5px no-repeat,
        linear-gradient(currentColor, currentColor) calc(50% + 3px) center / 4px 1.8px no-repeat;
}

.exercise-group-badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 3px 8px;
    border-radius: 999px;
    background: rgba(96, 165, 250, 0.12);
    color: var(--accent-blue);
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.delete-exercise-btn {
    width: auto;
    padding: 0;
    font-size: 0.78rem;
    background: var(--control-surface);
    border: 1px solid rgba(251, 113, 133, 0.2);
    color: #fda4af;
    box-shadow: none;
    width: 44px;
    height: 44px;
    min-height: 44px;
    border-radius: 50%;
}

.muted-group-header {
    border-left-color: var(--text-muted);
    background: var(--muted-group-bg);
}

.muted-group-header h3 {
    color: var(--text-muted);
}

.delete-exercise-btn:hover {
    background: rgba(251, 113, 133, 0.1);
    border-color: rgba(251, 113, 133, 0.3);
    color: #ffe4e6;
    box-shadow: none;
}

/* Default: show text, hide icon */
.delete-exercise-btn .delete-icon {
    display: inline;
    font-size: 0.9rem;
    line-height: 1;
}
.delete-exercise-btn .delete-text {
    display: none;
}

.exercise-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-shrink: 0;
}

.toggle-exercise-btn {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    background: var(--control-surface-gradient);
    border: 1px solid rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 8px 18px rgba(2, 6, 23, 0.14);
    position: relative;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.18s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
    cursor: pointer;
}

.toggle-exercise-btn::before {
    content: '';
    display: block;
    width: 16px;
    height: 16px;
    background-color: currentColor;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    -webkit-mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
    transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s ease;
    transform: rotate(0deg);
}

.toggle-exercise-btn:hover {
    border-color: rgba(96, 165, 250, 0.35);
    background: linear-gradient(180deg, rgba(96, 165, 250, 0.18), rgba(96, 165, 250, 0.08));
    color: var(--accent-blue);
    transform: scale(1.08);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 10px 22px rgba(37, 99, 235, 0.16);
}

.toggle-exercise-btn:focus-visible {
    outline: none;
    border-color: rgba(96, 165, 250, 0.52);
    background: linear-gradient(180deg, rgba(96, 165, 250, 0.18), rgba(96, 165, 250, 0.08));
    color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.18), inset 0 1px 0 rgba(255,255,255,0.08), 0 10px 22px rgba(37, 99, 235, 0.16);
}

.toggle-exercise-btn:active {
    transform: scale(0.96);
}

/* Smooth collapse animation */
.exercise-card .sets-container,
.exercise-card .add-set-btn {
    overflow: hidden;
    max-height: 2000px;
    opacity: 1;
    transition: max-height 0.38s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.28s ease, margin 0.28s ease, padding 0.28s ease, min-height 0.28s ease, border-width 0.2s ease;
}

.exercise-card.collapsed .sets-container,
.exercise-card.collapsed .add-set-btn {
    max-height: 0 !important;
    opacity: 0;
    pointer-events: none;
}

.exercise-card .sets-container {
    margin-bottom: 10px;
}

.exercise-card.collapsed .sets-container {
    margin-bottom: 0;
}

.exercise-card .add-set-btn {
    margin-top: 0;
}

.exercise-card.collapsed .add-set-btn {
    min-height: 0;
    margin-top: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-width: 0;
}

.exercise-card.collapsed .toggle-exercise-btn {
    background: var(--control-surface-gradient-collapsed);
}

.exercise-card.collapsed .toggle-exercise-btn::before {
    transform: rotate(-90deg);
}

.add-set-form {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    align-items: center;
}

.add-set-form input {
    flex: 1;
}

.add-set-form button {
    width: auto;
}

.sets-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.set-details {
    font-weight: 600;
    font-size: 1.1em;
}

.set-number {
    font-size: 0.9em;
    font-weight: 700;
    color: var(--text-muted);
}

.delete-set-btn {
    width: auto;
    height: 44px;
    min-height: 44px;
    min-width: 44px;
    padding: 8px;
    background: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: bold;
    box-shadow: none;
    border-radius: 50%;
}

.delete-set-btn:hover {
    color: var(--text-light);
    background: var(--danger-gradient);
    transform: none;
    box-shadow: none;
}

/* --- Estilos para series editables --- */

.set-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: var(--row-bg);
    border-radius: 12px;
    border-left: 2px solid var(--border-color);
    transition: background-color 0.3s, border-color 0.3s;
}

.set-inputs {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    flex: 1;
}

.set-inputs.cardio-inputs {
    gap: 6px;
}

.set-inputs.cardio-inputs input {
    width: 68px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.set-inputs input {
    width: 74px;
    padding: 9px 8px;
    text-align: center;
    border-radius: 10px;
}

.input-label {
    font-size: 0.9em;
    color: var(--text-muted);
    text-align: center;
}

.set-actions {
    display: flex;
    gap: 5px;
    align-items: center;
    padding-bottom: 18px;
}

.confirm-set-btn {
    width: auto;
    height: 44px;
    min-height: 44px;
    min-width: 44px;
    padding: 8px 12px;
    background: rgba(96, 165, 250, 0.14);
    color: white;
    font-size: 0.9rem;
    box-shadow: none;
    border-radius: 10px;
}

.confirm-set-btn:hover {
    background: rgba(96, 165, 250, 0.24);
    transform: none;
    box-shadow: none;
}

.set-row.completed {
    background-color: rgba(16, 185, 129, 0.1);
    border-left-color: var(--success);
}

.set-row.completed .confirm-set-btn {
    background: var(--success);
    color: white;
}

.set-row.completed .set-inputs input {
    background: rgba(16, 185, 129, 0.1);
}

.history-tools-panel {
    display: block;
    margin-bottom: 12px;
}

.history-tools-panel.collapsed {
    display: none;
}

.history-panel-card {
    padding: 14px;
    border-radius: 18px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    box-shadow: var(--shadow-card);
    min-width: 0;
}

.history-panel-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}

.history-panel-head h3 {
    margin: 0 0 4px;
    font-size: 1rem;
}

.history-overview-shell {
    margin-bottom: 14px;
}

.progress-top-panel {
    margin-bottom: 12px;
}

.progress-weight-entry-card,
.progress-panel {
    padding: 14px;
    border-radius: 18px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    box-shadow: var(--shadow-card);
    min-width: 0;
    overflow: hidden;
}

.progress-weight-form {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr) auto;
    gap: 10px;
    align-items: end;
}

.progress-summary-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
}

.progress-summary-card,
.weight-summary-card {
    padding: 12px;
    border-radius: 16px;
    background: var(--tile-bg);
    border: 1px solid var(--tile-border);
}

.progress-summary-card strong,
.weight-summary-card strong {
    display: block;
    margin-top: 6px;
    margin-bottom: 4px;
    font-size: 1.15rem;
    color: var(--text-light);
}

.progress-summary-card p,
.weight-summary-card p {
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.35;
}

.progress-summary-kicker {
    color: var(--accent-blue);
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 700;
}

.progress-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 12px;
    min-width: 0;
}

.progress-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
    min-width: 0;
}

.compact-panel-header {
    margin-bottom: 10px;
}

.progress-panel-heading {
    min-width: 0;
    flex: 1;
}

.progress-panel-heading h3,
.progress-weight-entry-card h3 {
    margin: 0 0 4px;
    font-size: 1rem;
    min-width: 0;
}

.calendar-nav-btn {
    width: 44px;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    border-radius: 14px;
    flex: 0 0 44px;
}

.progress-calendar-weekdays,
.progress-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 6px;
    min-width: 0;
}

.progress-calendar-weekdays {
    margin-bottom: 8px;
}

.progress-calendar-weekdays span {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.progress-calendar-cell {
    min-height: 78px;
    padding: 8px 6px;
    border-radius: 14px;
    background: var(--tile-bg-soft);
    border: 1px solid var(--tile-border-soft);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
}

.progress-calendar-cell.is-empty {
    background: transparent;
    border-color: transparent;
}

.progress-calendar-cell.is-active.level-1 {
    background: rgba(96, 165, 250, 0.08);
}

.progress-calendar-cell.is-active.level-2 {
    background: rgba(96, 165, 250, 0.14);
}

.progress-calendar-cell.is-active.level-3 {
    background: rgba(96, 165, 250, 0.22);
    border-color: rgba(96, 165, 250, 0.26);
}

.progress-calendar-cell.is-today {
    box-shadow: inset 0 0 0 1px rgba(52, 211, 153, 0.42);
}

.calendar-day-number {
    font-weight: 700;
    color: var(--text-light);
}

.calendar-day-meta,
.calendar-day-volume {
    font-size: 0.68rem;
    color: var(--text-muted);
    line-height: 1.2;
}

.body-weight-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 12px;
}

.progress-weight-chart-wrap {
    position: relative;
    min-height: 250px;
    margin-bottom: 12px;
    width: 100%;
    min-width: 0;
}

.progress-weight-chart-wrap canvas {
    display: block;
    width: 100% !important;
    max-width: 100%;
    height: 100% !important;
}

.body-weight-history {
    display: grid;
    gap: 8px;
}

.body-weight-history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    background: var(--tile-bg);
    border: 1px solid var(--tile-border-soft);
    color: var(--text-muted);
}

.body-weight-history-item strong {
    color: var(--text-light);
}

.nutrition-top-layout,
.nutrition-bottom-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 12px;
    margin-bottom: 14px;
    min-width: 0;
}

.nutrition-panel {
    padding: 14px;
    border-radius: 18px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    box-shadow: var(--shadow-card);
    min-width: 0;
}

.nutrition-goals-form,
.nutrition-entry-form {
    display: grid;
    gap: 10px;
}

.nutrition-goals-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: end;
}

.nutrition-goals-form button {
    grid-column: 1 / -1;
}

.nutrition-entry-form {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: end;
}

.nutrition-entry-name-group,
.nutrition-entry-notes-group {
    grid-column: span 2;
}

.nutrition-entry-form button {
    grid-column: 1 / -1;
}

.nutrition-summary-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
}

.nutrition-summary-card {
    padding: 12px;
    border-radius: 16px;
    background: var(--tile-bg);
    border: 1px solid var(--tile-border);
}

.nutrition-summary-card strong {
    display: block;
    margin-top: 6px;
    margin-bottom: 4px;
    font-size: 1.12rem;
    color: var(--text-light);
}

.nutrition-summary-card p {
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.35;
}

.nutrition-summary-card-wide {
    grid-column: span 2;
}

.nutrition-entries-container,
.nutrition-recent-days {
    display: grid;
    gap: 10px;
}

.nutrition-meal-card {
    padding: 12px;
    border-radius: 16px;
    background: var(--tile-bg);
    border: 1px solid var(--tile-border-soft);
}

.nutrition-meal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 10px;
}

.nutrition-meal-header h4 {
    margin: 0 0 4px;
    font-size: 0.96rem;
}

.nutrition-meal-header p {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.nutrition-meal-macros {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px;
}

.nutrition-meal-macros span,
.nutrition-recent-delta {
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(96, 165, 250, 0.12);
    color: #dbeafe;
    font-size: 0.7rem;
    letter-spacing: 0.03em;
}

.nutrition-recent-delta.is-over {
    background: rgba(251, 113, 133, 0.14);
    color: #fecdd3;
}

.nutrition-recent-delta.is-under {
    background: rgba(16, 185, 129, 0.14);
    color: #bbf7d0;
}

.nutrition-meal-items {
    display: grid;
    gap: 8px;
}

.nutrition-entry-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 12px;
    background: var(--list-item-bg);
    border: 1px solid var(--list-item-border);
}

.nutrition-entry-copy {
    min-width: 0;
    flex: 1;
}

.nutrition-entry-headline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 4px;
}

.nutrition-entry-headline strong {
    min-width: 0;
    font-size: 0.92rem;
}

.nutrition-entry-headline span,
.nutrition-entry-copy p,
.nutrition-recent-day p {
    color: var(--text-muted);
    font-size: 0.77rem;
    line-height: 1.35;
}

.nutrition-delete-btn {
    width: 40px;
    min-width: 40px;
    height: 40px;
    min-height: 40px;
    padding: 0;
    border-radius: 50%;
    box-shadow: none;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(251, 113, 133, 0.18);
    color: #fda4af;
}

.nutrition-delete-btn:hover {
    background: rgba(251, 113, 133, 0.12);
    box-shadow: none;
}

.nutrition-recent-day {
    text-align: left;
    padding: 12px;
    border-radius: 14px;
    background: var(--tile-bg);
    border: 1px solid var(--tile-border-soft);
    box-shadow: none;
}

.nutrition-recent-day strong {
    display: block;
    margin: 5px 0 4px;
    color: var(--text-light);
    font-size: 1rem;
}

.nutrition-recent-date {
    color: var(--accent-blue);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* --- Filtros de Historial --- */
.filters-container {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(150px, 0.76fr) minmax(104px, 0.48fr) minmax(0, 1.2fr) auto;
    gap: 10px;
    align-items: end;
    margin-bottom: 0;
}

.filters-container .form-group {
    margin-bottom: 0;
    min-width: 0;
}

.history-filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.history-filter-label {
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.history-filter-group-month {
    justify-self: end;
    width: 100%;
    max-width: 118px;
}

.history-filter-month-input {
    min-height: 42px;
    padding: 10px 12px;
    border-radius: 999px;
    border: 1px solid rgba(96, 165, 250, 0.18);
    background: var(--month-input-bg);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
    font-size: 0.8rem;
    text-align: center;
    color: var(--text-light);
}

.history-filter-month-input:hover {
    border-color: rgba(96, 165, 250, 0.32);
    background: var(--month-input-hover-bg);
}

.history-filter-month-input:focus {
    border-color: rgba(96, 165, 250, 0.48);
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.14), inset 0 1px 0 rgba(255,255,255,0.05);
}

.history-filter-month-input::-webkit-calendar-picker-indicator {
    opacity: 0.72;
    cursor: pointer;
}

.filters-container button {
    flex: 0 0 auto;
    width: auto;
    height: 46px;
}

/* actions wrapper next to filters */
.filters-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: flex-end;
    align-self: end;
}

/* Make date filter more visible when empty and add spacing for buttons */
#history-filter-date {
    min-width: 160px;
    padding: 12px;
    font-size: 16px;
}

.secondary-btn {
    background: var(--tile-bg-soft);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 10px 12px;
    border-radius: 12px;
}

.secondary-btn:hover {
    background: var(--tile-bg);
    color: var(--text-light);
}

/* --- Nuevos estilos para Historial y Modal --- */

.workout-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

#view-history-btn {
    width: auto;
    background: var(--control-surface);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    box-shadow: none;
}

#view-history-btn:hover {
    background: var(--control-surface-strong);
    color: var(--text-light);
    box-shadow: none;
}

.modal {
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background: var(--modal-backdrop-bg);
    backdrop-filter: blur(10px);
    cursor: pointer;
    animation: modalBackdropIn 0.2s ease-out;
}

@keyframes modalBackdropIn {
    from { opacity: 0.88; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--card-bg);
    margin: 7% auto;
    padding: 22px;
    border: 1px solid rgba(255,255,255,0.08);
    width: 90%;
    max-width: 560px;
    border-radius: 20px;
    animation: modalSlideIn 0.24s ease-out;
    box-shadow: var(--shadow-soft);
}

@keyframes modalSlideIn {
    from { transform: translateY(-8px) scale(0.992); opacity: 0.96; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 14px;
}

.modal-header h2 {
    border: none;
    margin: 0;
    padding: 0;
}

.close-btn {
    color: var(--text-muted);
    font-size: 28px;
    font-weight: bold;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0 10px;
    box-shadow: none;
    width: auto;
}

.close-btn:hover,
.close-btn:focus {
    color: var(--text-light);
}

#history-container {
    max-height: 60vh;
    overflow-y: auto;
    padding-right: 8px;
}

.history-overview {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 14px;
}

.history-overview-card {
    padding: 10px 12px;
    border-radius: 14px;
    background: var(--overview-card-bg);
    border: 1px solid rgba(96, 165, 250, 0.14);
    box-shadow: var(--overview-card-shadow);
}

.history-overview-card-wide {
    grid-column: span 2;
}

.history-overview-label {
    display: block;
    margin-bottom: 4px;
    color: var(--text-muted);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    line-height: 1.15;
}

.history-overview-card strong {
    font-size: 1rem;
    line-height: 1;
    color: var(--text-light);
}

.history-month-group {
    margin-bottom: 16px;
}

.history-month-title {
    margin: 0 0 8px;
    padding: 0 4px;
    color: var(--history-month-title);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* --- Estilos Premium para Tarjetas de Historial --- */

.history-card {
    background: var(--surface-strong);
    border-radius: 14px;
    margin-bottom: 10px;
    overflow: hidden;
    box-shadow: 0 10px 18px rgba(2, 6, 23, 0.14);
    border: 1px solid rgba(255,255,255,0.045);
    transition: transform 0.2s, box-shadow 0.2s;
}

.history-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 20px rgba(2, 6, 23, 0.18);
    border-color: rgba(96, 165, 250, 0.18);
}

.history-header {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    align-items: stretch;
    padding: 10px 11px;
    background: var(--history-header-bg);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.history-card-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0;
    width: 100%;
    min-height: auto;
    background: transparent;
    border: none;
    box-shadow: none;
    text-align: left;
}

.history-card-toggle:hover {
    transform: none;
    box-shadow: none;
}

.history-header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.history-collapse-btn {
    width: 34px;
    height: 34px;
    min-height: 34px;
    padding: 0;
    border-radius: 12px;
    border: 1px solid var(--tile-border);
    background: var(--history-collapse-bg);
    box-shadow: none;
    position: relative;
}

.history-collapse-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--history-collapse-stroke);
    border-bottom: 2px solid var(--history-collapse-stroke);
    transform: translate(-50%, -60%) rotate(45deg);
    transition: transform 0.22s ease;
}

.history-card.collapsed .history-collapse-btn::before {
    transform: translate(-50%, -42%) rotate(-45deg);
}

.history-collapse-btn:hover {
    background: rgba(96, 165, 250, 0.1);
    border-color: rgba(96, 165, 250, 0.34);
}

.history-date-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 10px;
    padding: 5px 8px;
    margin-right: 4px;
    min-width: 46px;
}

.date-day {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-light);
    line-height: 1;
}

.date-month {
    font-size: 0.56rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-transform: uppercase;
    margin-top: 3px;
    letter-spacing: 0.08em;
}

.history-meta h3 {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 600;
    line-height: 1.2;
}

.history-meta {
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.history-summary-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: 5px;
}

.history-summary-pill {
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
    padding: 3px 6px;
    border-radius: 999px;
    background: var(--tile-bg-soft);
    border: 1px solid rgba(148, 163, 184, 0.16);
    font-size: 0.62rem;
    color: var(--text-muted);
}

.history-summary-pill strong {
    color: var(--text-light);
    font-size: 0.74rem;
}

.history-summary-pill span {
    white-space: nowrap;
}

/* Botón de eliminar en historial */
.delete-workout-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    width: 30px;
    height: 30px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: none;
    font-size: 1rem;
}

.delete-workout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-color: #ef4444;
    transform: scale(1.08);
}

.history-body {
    padding: 10px 11px 11px;
    max-height: 2000px;
    opacity: 1;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.24s ease, padding 0.24s ease;
}

.history-card.collapsed .history-body {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
}

.history-exercise-item {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--tile-border-soft);
}

.history-exercise-group {
    margin-bottom: 12px;
}

.history-exercise-group:last-child {
    margin-bottom: 0;
}

.history-exercise-group-header {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
}

.history-exercise-group-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0 0 4px;
    color: var(--text-light);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.history-exercise-group-label::after {
    content: '';
    display: block;
    width: 26px;
    height: 1px;
    background: linear-gradient(90deg, rgba(96, 165, 250, 0.72), rgba(96, 165, 250, 0));
}

.history-exercise-group-body {
    display: block;
}

.history-exercise-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.history-exercise-item h4 {
    margin: 0;
    color: var(--text-light);
    font-size: 0.86rem;
    font-weight: 600;
    line-height: 1.2;
}

.history-exercise-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
}

.evolution-btn {
    width: auto;
    padding: 5px 7px;
    font-size: 0.66rem;
    background: var(--tile-bg-soft);
    border: 1px solid rgba(59, 130, 246, 0.4);
    color: var(--accent-blue);
    box-shadow: none;
    min-height: 28px;
}

.evolution-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    transform: none;
}

.history-sets {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.set-tag {
    background: var(--tag-bg);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 3px 7px;
    font-size: 0.68rem;
    color: var(--text-muted);
    font-family: monospace; 
    transition: all 0.2s;
}

.set-tag:hover {
    background: var(--tag-hover-bg);
    border-color: var(--accent-blue);
    color: var(--text-light);
}

.chart-heading {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.chart-subtitle {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.chart-toolbar {
    margin-bottom: 14px;
}

.chart-metric-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chart-metric-btn {
    width: auto;
    min-height: 34px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    box-shadow: none;
}

.chart-metric-btn.active {
    background: rgba(96, 165, 250, 0.16);
    border-color: rgba(96, 165, 250, 0.3);
    color: var(--text-light);
}

.chart-stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
}

.chart-stat-card {
    padding: 12px;
    border-radius: 14px;
    background: rgba(255,255,255,0.025);
    border: 1px solid rgba(148, 163, 184, 0.14);
}

.chart-stat-label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.chart-stat-card strong {
    color: var(--text-light);
}

.chart-canvas-wrap {
    position: relative;
    min-height: 300px;
}

.exercise-history-modal-content {
    max-width: 620px;
}

.exercise-history-container {
    display: grid;
    gap: 10px;
    max-height: 62vh;
    overflow-y: auto;
    padding-right: 4px;
}

.exercise-history-entry {
    padding: 12px;
    border-radius: 14px;
    background: rgba(255,255,255,0.025);
    border: 1px solid rgba(148, 163, 184, 0.12);
}

.exercise-history-entry-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.exercise-history-entry-head h3 {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-light);
}

.exercise-history-entry-date {
    font-size: 0.74rem;
    color: var(--text-muted);
}

.exercise-history-entry-sets {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.empty-state {
    text-align: center;
    padding: 28px 18px;
    color: var(--text-muted);
    font-style: italic;
}

/* --- Estilos para el Modal de Diálogo Personalizado --- */
.dialog-content {
    max-width: 400px;
    text-align: center;
    padding: 20px;
}

.dialog-content h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
    color: var(--text-light);
}

.dialog-content p {
    margin-bottom: 18px;
    color: var(--text-muted);
    line-height: 1.5;
}

.dialog-actions {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 2100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--modal-backdrop-bg);
    backdrop-filter: blur(12px);
}

.loading-overlay.hidden {
    display: none;
}

.loading-overlay-card {
    min-width: 180px;
    max-width: min(240px, calc(100vw - 40px));
    padding: 18px 20px;
    border-radius: 18px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.loading-overlay-card p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 600;
}

.loading-spinner {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 3px solid rgba(148, 163, 184, 0.22);
    border-top-color: var(--accent-blue);
    animation: loadingSpinnerRotate 0.8s linear infinite;
}

@keyframes loadingSpinnerRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.secondary-btn:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text-light);
    transform: translateY(-2px);
}

/* --- Optimización para Móviles y Tablets --- */

/* Tablets (iPad, pantallas medianas) */
@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .header-bar {
        flex-direction: row;
        align-items: center;
    }

    .user-session-bar {
        width: auto;
        justify-content: flex-end;
    }

    section {
        padding: 16px;
        border-radius: 16px;
    }

    header h1 {
        font-size: 1.25rem;
    }

    section h2 {
        font-size: 1.05rem;
    }

    #workout-header {
        flex-direction: column;
        align-items: stretch;
    }

    .workout-actions {
        width: 100%;
    }

    .history-overview {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .history-overview-card-wide {
        grid-column: span 2;
    }

    .chart-stat-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .nutrition-top-layout,
    .nutrition-bottom-layout,
    .nutrition-summary-grid {
        grid-template-columns: 1fr 1fr;
    }

    .nutrition-summary-card-wide {
        grid-column: 1 / -1;
    }

    .nutrition-entry-form {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .workout-meta-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
    }

    .progress-summary-grid,
    .progress-layout {
        grid-template-columns: 1fr 1fr;
    }

    .progress-weight-form {
        grid-template-columns: 1fr 1fr;
    }

    .progress-weight-form button {
        grid-column: 1 / -1;
    }
}

/* iPhone 14 Pro Max, Plus y otros móviles grandes (max 480px) */
@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    header {
        margin-bottom: 12px;
        padding: 12px 14px;
        border-radius: 16px;
    }

    header h1 {
        font-size: 1.08rem;
        word-break: normal;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .header-bar {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
    }

    .user-session-bar {
        width: auto;
        margin-left: auto;
    }

    .user-menu-btn {
        width: 40px;
        height: 40px;
        min-height: 40px;
    }

    .user-menu-popover {
        right: 0;
        left: auto;
        width: min(170px, calc(100vw - 24px));
        max-width: calc(100vw - 24px);
    }

    main {
        max-width: 100%;
    }

    section {
        padding: 12px;
        margin-bottom: 12px;
        border-radius: 12px;
    }

    section h2 {
        margin-bottom: 12px;
        font-size: 1rem;
    }

    #auth-view {
        margin-top: 12px;
    }

    .auth-input-shell {
        border-radius: 14px;
    }

    .auth-actions {
        flex-direction: column;
    }

    .toggle-password-btn {
        min-height: 34px;
        padding: 8px 10px;
        font-size: 0.74rem;
        min-width: 68px;
        gap: 6px;
    }

    section h3 {
        font-size: 0.95rem;
    }

    label {
        font-size: 0.68rem;
        margin-bottom: 5px;
    }

    /* Inputs y Selects */
    input[type="text"],
    input[type="date"],
    input[type="number"],
    select {
        padding: 11px 12px;
        font-size: 16px;
        border-radius: 12px;
    }

    /* Evitar desbordes y asegurar que los inputs no excedan el ancho del viewport */
    input[type="date"],
    input[type="text"],
    input[type="number"],
    select,
    textarea {
        max-width: 100%;
        min-width: 0; /* importante dentro de flex/grid para no forzar ancho */
        box-sizing: border-box;
        -webkit-appearance: none; /* reduce diferencias de apariencia en iOS */
        appearance: none;
        font-size: 16px; /* refuerzo para selects también */
    }

    /* Asegurar que los contenedores no provoquen overflow horizontal */
    html, body, main {
        overflow-x: hidden;
    }

    /* Botones Generales */
    button {
        padding: 11px 14px;
        font-size: 0.9rem;
        min-height: 42px;
        width: 100%;
    }

    /* Navegación Principal */
    #main-nav {
        gap: 4px;
        margin-bottom: 12px;
        top: 8px;
    }

    .nav-btn {
        flex: 1;
        padding: 8px 4px;
        font-size: 0.82rem;
        height: 40px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    #main-nav::before {
        border-radius: 12px;
    }

    /* Cabecera de Entrenamiento */
    #workout-header {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        margin-bottom: 12px;
        padding: 12px;
        background: rgba(96, 165, 250, 0.05);
        border-radius: 12px;
        position: sticky;
        top: 58px;
        z-index: 16;
    }

    .workout-info {
        gap: 0;
    }

    .workout-meta-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 4px;
    }

    .workout-title-wrapper {
        width: 100%;
        justify-content: space-between;
        align-items: center;
        gap: 10px;
    }

    .workout-type {
        font-size: 1.16rem;
    }

    .edit-groups-btn {
        min-height: 36px;
        padding: 7px 10px;
    }

    .edit-groups-label {
        font-size: 0.72rem;
    }

    .workout-date {
        font-size: 0.8rem;
    }

    .workout-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 6px;
        align-items: stretch;
        width: 100%;
    }

    .workout-actions button {
        width: 100%;
        padding: 10px 6px;
        font-size: 0.78rem;
        margin: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    #view-history-btn,
    #cancel-workout-btn {
        width: 100%;
    }

    .sticky-save-bar {
        position: sticky;
        bottom: calc(10px + env(safe-area-inset-bottom));
        z-index: 18;
        margin-top: 16px;
    }

    #finish-workout-btn {
        min-height: 50px;
        border-radius: 14px;
    }

    /* Form Groups */
    .form-group {
        margin-bottom: 12px;
    }

    #add-exercise-form {
        margin-top: 14px;
        padding-top: 12px;
    }

    #add-exercise-form h3 {
        font-size: 0.92rem;
        margin-bottom: 10px;
    }

    #add-exercise-form .form-group {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    #exercise-type-select {
        max-width: none;
    }

    #add-exercise-form input {
        width: 100%;
    }

    #add-exercise-form button {
        width: 100%;
    }

    .muscle-group-native-select {
        min-height: 220px;
        font-size: 0.95rem;
    }

    #load-exercises-btn {
        font-size: 0.88rem;
        padding: 11px 12px;
    }

    .muscle-group-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin: 0;
        padding: 0;
        border-radius: 0;
    }

    .muscle-group-header::after {
        width: 10px;
        height: 10px;
        margin-left: 8px;
    }

    .muscle-group-header h3 {
        font-size: 0.9rem;
        margin: 0;
    }

    .muscle-group-section {
        margin-bottom: 12px;
        padding: 12px;
        border-radius: 16px;
    }

    .muscle-group-body {
        gap: 8px;
        margin-top: 10px;
    }

    .delete-muscle-group-btn {
        padding: 6px 8px;
        font-size: 0.74rem;
    }

    /* Tarjetas de Ejercicio */
    .exercise-card {
        padding: 12px;
        margin-bottom: 10px;
        border-radius: 12px;
    }

    .exercise-card.collapsed {
        padding-bottom: 8px;
    }

    .exercise-header {
        padding-bottom: 10px;
        margin-bottom: 10px;
    }

    .exercise-title {
        font-size: 0.92rem;
        width: 100%;
    }

    .exercise-heading {
        min-width: 0;
        width: 100%;
    }

    .exercise-title-row {
        width: 100%;
        align-items: flex-start;
        gap: 6px;
    }

    .exercise-group-badge {
        font-size: 0.62rem;
        padding: 3px 8px;
    }

    .exercise-history-btn {
        min-height: 26px;
        padding: 4px 8px;
        font-size: 0.64rem;
        white-space: nowrap;
    }

    .exercise-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 6px;
    }

    .delete-exercise-btn {
        width: 44px;
        height: 44px;
        padding: 0;
        border-radius: 50%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
        background: transparent;
        border: 1px solid var(--border-color);
        color: var(--text-muted);
        min-height: 44px;
    }

    .toggle-exercise-btn {
        width: 44px;
        height: 44px;
    }

    .toggle-exercise-btn::before {
        width: 15px;
        height: 15px;
    }

    .delete-exercise-btn .delete-text {
        display: none;
    }

    .delete-exercise-btn .delete-icon {
        display: inline;
    }

    .sets-container {
        gap: 6px;
        margin-bottom: 10px;
    }

    .exercise-card.collapsed .sets-container {
        margin-bottom: 0;
    }

    .set-row {
        display: grid;
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
        gap: 6px;
        padding: 10px;
        align-items: center;
        border-radius: 10px;
    }

    .set-number {
        grid-column: 1 / -1;
        font-size: 0.8rem;
        font-weight: 700;
        color: var(--text-muted);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .set-inputs {
        grid-column: 1 / 2;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 6px;
        align-items: start;
        width: 100%;
    }

    .set-inputs.cardio-inputs {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .input-group {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .set-inputs input {
        width: 100%;
        padding: 8px 6px;
        font-size: 0.88rem;
        min-width: 0;
    }

    .input-label {
        font-size: 0.68rem;
        color: var(--text-muted);
        text-align: center;
        margin-top: 2px;
    }

    .set-actions {
        grid-column: 2 / 3;
        grid-row: 2 / 3;
        display: flex;
        gap: 6px;
        justify-content: flex-end;
        align-items: center;
    }

    .confirm-set-btn,
    .delete-set-btn {
        width: 44px;
        height: 44px;
        padding: 6px;
        font-size: 0.76rem;
        min-height: 44px;
    }

    .add-set-btn {
        min-height: 44px;
    }

    .sticky-section-head {
        position: sticky;
        top: 58px;
        z-index: 14;
        padding-bottom: 10px;
        margin-bottom: 10px;
        background: linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.88));
        display: flex;
        flex-direction: column;
        align-items: stretch;
    }

    .history-view-head,
    .progress-view-head {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        margin-bottom: 12px;
        padding-bottom: 0;
        background: transparent;
    }

    .section-header-row {
        align-items: stretch;
        gap: 8px;
    }

    .section-header-row > div {
        width: 100%;
    }

    .section-subcopy {
        font-size: 0.76rem;
    }

    .section-toggle-btn {
        width: auto;
        min-width: 0;
        max-width: 100%;
        min-height: 42px;
        font-size: 0.74rem;
        padding: 8px 10px;
        align-self: flex-start;
    }

    .progress-top-panel {
        margin-bottom: 10px;
    }

    .progress-weight-entry-card,
    .progress-panel {
        padding: 12px;
        border-radius: 14px;
    }

    .progress-weight-form,
    .progress-summary-grid,
    .progress-layout,
    .body-weight-summary,
    .nutrition-top-layout,
    .nutrition-bottom-layout,
    .nutrition-summary-grid,
    .nutrition-goals-form,
    .nutrition-entry-form {
        grid-template-columns: 1fr;
    }

    .progress-panel-header {
        flex-wrap: nowrap;
        align-items: center;
    }

    .calendar-nav-btn {
        width: 40px;
        min-width: 40px;
        min-height: 40px;
        flex: 0 0 40px;
        padding: 0;
    }

    .progress-panel-heading {
        flex: 1 1 auto;
        text-align: center;
    }

    .progress-panel-heading .section-subcopy {
        line-height: 1.25;
    }

    .progress-calendar-weekdays,
    .progress-calendar-grid {
        gap: 4px;
    }

    .progress-calendar-cell {
        min-height: 64px;
        padding: 7px 5px;
    }

    .calendar-day-meta,
    .calendar-day-volume {
        font-size: 0.62rem;
    }

    .progress-weight-chart-wrap {
        min-height: 220px;
    }

    .nutrition-summary-card-wide {
        grid-column: auto;
    }

    .nutrition-entry-name-group,
    .nutrition-entry-notes-group {
        grid-column: auto;
    }

    .nutrition-meal-header,
    .nutrition-entry-headline {
        flex-direction: column;
        align-items: flex-start;
    }

    .nutrition-meal-macros {
        justify-content: flex-start;
    }

    .nutrition-entry-item {
        padding: 10px;
    }

    .nutrition-delete-btn {
        width: 36px;
        min-width: 36px;
        height: 36px;
        min-height: 36px;
    }

    /* Filtros de Historial */
    .filters-container {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        align-items: stretch;
        gap: 8px;
        margin-bottom: 0;
    }

    .filters-container .form-group {
        margin-bottom: 0;
        min-width: 0;
    }

    .history-filter-group-exercise {
        grid-column: 1 / -1;
    }

    .history-filter-group-month {
        justify-self: stretch;
        max-width: none;
    }

    .filters-container button {
        width: auto;
        height: 42px;
        padding: 8px 10px;
        font-size: 0.8rem;
    }

    .filters-actions {
        grid-column: 1 / -1;
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px;
        align-items: center;
        justify-content: flex-start;
    }

    .filters-actions button {
        flex: 1 1 calc(50% - 3px);
        min-width: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* Larger, more visible date input on mobile */
    #history-filter-date {
        width: 100%;
        min-width: 0;
        padding: 10px 8px;
        font-size: 16px;
        height: 42px;
    }

    .modal-content {
        margin: 16% auto;
        padding: 16px;
        width: 95%;
        border-radius: 12px;
    }

    .chart-stat-grid,
    .history-overview {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .history-overview-card-wide {
        grid-column: 1 / -1;
    }

    .chart-canvas-wrap {
        min-height: 240px;
    }

    .modal-header {
        padding-bottom: 12px;
        margin-bottom: 15px;
    }

    .modal-header h2 {
        font-size: 1.2em;
    }

    .close-btn {
        font-size: 24px;
        padding: 0 5px;
    }

    .exercise-history-entry {
        padding: 10px;
    }

    .exercise-history-entry-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 4px;
    }

    /* Historial */
    .history-card {
        margin-bottom: 10px;
        border-radius: 12px;
    }

    .history-header {
        padding: 10px;
        gap: 8px;
    }

    .history-card-toggle {
        align-items: flex-start;
    }

    .history-header-actions {
        gap: 6px;
    }

    .history-collapse-btn,
    .delete-workout-btn {
        width: 36px;
        height: 36px;
        min-height: 36px;
    }

    .history-date-badge {
        padding: 4px 8px;
        min-width: 48px;
        margin-right: 2px;
        border-radius: 8px;
    }

    .date-day {
        font-size: 1rem;
    }

    .date-month {
        font-size: 0.58rem;
    }

    .history-month-title {
        margin-bottom: 7px;
        padding: 0 2px;
        font-size: 0.74rem;
    }

    .history-meta h3 {
        font-size: 0.82rem;
    }

    .delete-workout-btn {
        font-size: 0.9rem;
    }

    .history-body {
        padding: 9px;
    }

    .history-exercise-item {
        margin-bottom: 7px;
        padding-bottom: 7px;
    }

    .history-exercise-group {
        margin-bottom: 10px;
    }

    .history-exercise-group-label {
        font-size: 0.6rem;
        letter-spacing: 0.1em;
    }

    .history-exercise-item h4 {
        font-size: 0.8rem;
    }

    .history-exercise-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .history-sets {
        gap: 5px;
    }

    .set-tag {
        font-size: 0.68rem;
        padding: 3px 7px;
        border-radius: 999px;
    }

    .history-overview-card {
        padding: 10px;
    }

    .history-panel-card {
        padding: 12px;
        border-radius: 14px;
    }

    .history-overview-card strong {
        font-size: 0.95rem;
    }

    .dialog-content {
        max-width: 90%;
        padding: 16px;
        margin: 34vh auto 0;
    }

    .dialog-content h3 {
        font-size: 1rem;
        margin-bottom: 10px;
    }

    .dialog-content p {
        font-size: 0.88rem;
        margin-bottom: 15px;
    }

    .dialog-actions {
        gap: 8px;
        flex-direction: column;
    }

    .secondary-btn,
    .dialog-content button {
        width: 100%;
        padding: 10px;
        font-size: 0.84rem;
    }

    .muscle-group-direct-select {
        appearance: auto;
        -webkit-appearance: menulist;
    }
}