:root {
    /* Authentic VFRGUPS Palette */
    --rgups-navy: #0e2a47;
    --rgups-navy-dark: #07192c;
    --rgups-navy-light: #163d66;
    --rgups-blue: #1d61f2;
    --rgups-blue-light: #eff5ff;
    --rgups-green: #107c41;
    --rgups-green-dark: #09522b;
    --rgups-green-light: #ecfdf3;
    --rgups-accent-red: #ef4444;
    --rgups-gold: #d4af37;
    --rgups-gold-light: #fefce8;

    /* Theme Adaptive Design Tokens (Premium Modern Railway Tech) */
    --bg-page: var(--tg-theme-bg-color, #0a0e17);
    --bg-card: var(--tg-theme-secondary-bg-color, #111827);
    --bg-card-subtle: rgba(255, 255, 255, 0.04);
    --text-main: var(--tg-theme-text-color, #f1f5f9);
    --text-muted: var(--tg-theme-hint-color, #94a3b8);
    --text-light: #64748b;
    --border-color: rgba(255, 255, 255, 0.09);
    --border-card: rgba(255, 255, 255, 0.08);

    /* Fonts Typography Hierarchy: Plus Jakarta Sans for crisp modern aesthetics */
    --font-unbounded: 'Unbounded', sans-serif;
    --font-heading: 'Plus Jakarta Sans', 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-sans: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Geometry & Polish */
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    --shadow-sm: 0 2px 8px rgba(14, 42, 71, 0.04);
    --shadow-md: 0 6px 20px rgba(14, 42, 71, 0.07);
    --shadow-lg: 0 12px 36px rgba(14, 42, 71, 0.12);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-page: var(--tg-theme-bg-color, #0b131e);
        --bg-card: var(--tg-theme-secondary-bg-color, #131d2b);
        --bg-card-subtle: #192537;
        --text-main: var(--tg-theme-text-color, #f8fafc);
        --text-muted: var(--tg-theme-hint-color, #94a3b8);
        --border-color: rgba(255, 255, 255, 0.08);
        --border-card: rgba(255, 255, 255, 0.06);
        --rgups-green-light: rgba(16, 124, 65, 0.18);
        --rgups-blue-light: rgba(29, 97, 242, 0.18);
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-sans);
    background: radial-gradient(circle at 50% 0%, #172554 0%, #0a0e17 48%, #07090e 100%);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.5;
    padding: 14px 14px 36px;
    user-select: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

/* Custom Sleek Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

.font-unbounded { font-family: var(--font-unbounded) !important; }
.font-heading { font-family: var(--font-heading) !important; }
.font-mono { font-family: var(--font-mono) !important; }

.app-container {
    max-width: 540px;
    margin: 0 auto;
}

/* ==========================================================================
   1. Official VFRGUPS Branding Header (Clean & Modern)
   ========================================================================== */
.vfrgups-header {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 41, 59, 0.88) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: #ffffff;
    border-radius: 20px;
    padding: 20px 20px 18px;
    margin-bottom: 14px;
    box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(56, 189, 248, 0.22);
}

.vfrgups-header::before {
    content: "";
    position: absolute;
    top: -50px;
    right: -40px;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.18) 0%, transparent 70%);
    pointer-events: none;
}

.header-top-line {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

/* Mathematically Perfect Circular Vector Badge for Logo */
.brand-emblem-wrap {
    width: 62px;
    height: 62px;
    min-width: 62px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid #d4af37; /* Clean, perfectly smooth vector border */
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3), 0 0 0 2px rgba(255, 255, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 3px;
    flex-shrink: 0;
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand-emblem-wrap:hover {
    transform: scale(1.05) rotate(2deg);
}

.vfrgups-official-logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.brand-titles {
    flex: 1;
}

.u-name-main {
    font-family: var(--font-unbounded);
    font-size: 1.04rem;
    font-weight: 800;
    letter-spacing: -0.35px;
    color: #ffffff;
    line-height: 1.3;
    text-transform: none;
    text-shadow: 0 2px 14px rgba(56, 189, 248, 0.25);
}

.u-name-sub {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.72);
    line-height: 1.35;
    margin-top: 2px;
}

.branch-tag {
    font-size: 0.72rem;
    color: var(--rgups-gold);
    font-weight: 600;
    margin-top: 3px;
    letter-spacing: 0.2px;
}

/* Group Badge Banner */
.header-group-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-md);
    padding: 8px 14px;
    margin-bottom: 8px;
}

.group-pill {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pill-dot {
    width: 9px;
    height: 9px;
    background: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 10px #22c55e;
    animation: pulseBeacon 2s infinite;
}

@keyframes pulseBeacon {
    0% { transform: scale(0.95); opacity: 0.85; }
    50% { transform: scale(1.15); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.85; }
}

.group-title {
    font-family: var(--font-unbounded);
    font-size: 0.95rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 0.5px;
}

.route-badge {
    font-family: var(--font-heading);
    font-size: 0.74rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--rgups-gold) 0%, #b8860b 100%);
    color: #0e2a47;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.specialty-label {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.72);
    font-style: italic;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 6px;
}

/* ==========================================================================
   2. Segmented App Navigation Tabs (Modern Pill Switcher)
   ========================================================================== */
.app-nav {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 16px;
    padding: 5px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-bottom: 14px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.nav-tab {
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    padding: 9px 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--text-muted);
}

.nav-tab .tab-icon {
    font-size: 1.05rem;
}

.nav-tab .tab-text {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
}

.nav-tab.active {
    background: var(--rgups-navy);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(14, 42, 71, 0.18);
}

@media (prefers-color-scheme: dark) {
    .nav-tab.active {
        background: #1e3a8a;
    }
}

.tab-content {
    display: none;
}
.tab-content.active {
    display: block;
    animation: tabFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ==========================================================================
   3. Cards & Sections
   ========================================================================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.2s ease;
}

/* Date Card */
.date-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.date-icon {
    font-size: 1.4rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card-subtle);
    border-radius: var(--radius-sm);
}

.date-info {
    flex: 1;
}

.sub-label {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.date-info strong {
    font-size: 0.98rem;
    color: var(--text-main);
    font-weight: 700;
}

.date-countdown {
    font-size: 0.76rem;
    color: var(--rgups-green);
    margin-top: 2px;
    font-weight: 600;
}

@media (prefers-color-scheme: dark) {
    .date-countdown {
        color: #4ade80;
    }
}

.btn-icon-soft {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-main);
    transition: background 0.15s ease;
}

.btn-icon-soft:hover {
    background: rgba(14, 42, 71, 0.08);
}

.date-edit-panel {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.date-edit-panel label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.date-input-wrap {
    display: flex;
    gap: 8px;
}

.date-input-wrap input[type="date"] {
    flex: 1;
    padding: 9px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-page);
    color: var(--text-main);
    font-size: 0.95rem;
}

/* Railway Track Card */
.track-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 14px;
}

.track-badge {
    display: inline-block;
    font-size: 0.68rem;
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    color: var(--rgups-blue);
    background: var(--rgups-blue-light);
    padding: 2px 8px;
    border-radius: var(--radius-xs);
    margin-bottom: 4px;
}

.track-title-box h3 {
    font-family: var(--font-heading);
    font-size: 1.02rem;
    font-weight: 800;
    color: var(--text-main);
}

.percent-badge {
    font-size: 1.12rem;
    font-weight: 900;
    color: var(--rgups-green);
    background: var(--rgups-green-light);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    letter-spacing: -0.5px;
    border: 1px solid rgba(16, 124, 65, 0.15);
}

.railway-scene {
    position: relative;
    height: 48px;
    margin: 8px 0 14px;
    display: flex;
    align-items: center;
}

.rail-track {
    position: absolute;
    left: 4px;
    right: 32px;
    height: 10px;
    background: #334155;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3);
}

.rail-track::before {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 2px;
    height: 2px;
    background: #94a3b8;
}

.locomotive {
    position: absolute;
    top: 2px;
    transform: translateX(-50%);
    transition: left 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 3;
    display: flex;
    align-items: center;
}

.train-sprite {
    font-size: 2rem;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.3));
}

.train-smoke {
    font-size: 0.9rem;
    margin-left: -6px;
    margin-top: -12px;
    opacity: 0.75;
}

.station-finish {
    position: absolute;
    right: 2px;
    top: 10px;
    font-size: 1.4rem;
}

.track-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

.time-left {
    font-size: 0.84rem;
    color: var(--text-muted);
}
.time-left strong {
    color: var(--text-main);
    font-weight: 700;
}

.semaphore-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.74rem;
    font-weight: 700;
}

.sem-light {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.sem-green { background: #dcfce7; color: #166534; }
.sem-green .sem-light { background: #22c55e; box-shadow: 0 0 6px #22c55e; }

.sem-yellow { background: #fef9c3; color: #854d0e; }
.sem-yellow .sem-light { background: #eab308; box-shadow: 0 0 6px #eab308; }

.sem-red { background: #fee2e2; color: #991b1b; }
.sem-red .sem-light { background: #ef4444; box-shadow: 0 0 6px #ef4444; }

/* ==========================================================================
   4. Big Metrics Grid (Polished Modern Cards)
   ========================================================================== */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 14px;
}

.metric-box {
    background: linear-gradient(145deg, rgba(17, 24, 39, 0.85), rgba(15, 23, 42, 0.75));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 18px;
    padding: 14px 10px;
    text-align: center;
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.35);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease;
}

.metric-box:hover {
    transform: translateY(-2px);
    border-color: rgba(56, 189, 248, 0.35);
}

.m-icon {
    font-size: 1.25rem;
    margin-bottom: 3px;
}

.m-label {
    font-family: var(--font-heading);
    font-size: 0.66rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.m-value {
    font-size: 1.45rem;
    font-weight: 800;
    color: #ffffff;
    background: linear-gradient(135deg, #ffffff 10%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
    margin: 6px 0 3px;
    letter-spacing: -0.5px;
}

@media (prefers-color-scheme: dark) {
    .m-value { color: #38bdf8; }
}

.m-sub {
    font-size: 0.62rem;
    color: var(--text-muted);
}

/* ==========================================================================
   5. Subjects Breakdown List
   ========================================================================== */
.card-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.header-with-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.header-with-badge h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 800;
}

.badge-tag {
    font-size: 0.68rem;
    font-family: var(--font-mono);
    color: var(--rgups-green);
    background: var(--rgups-green-light);
    padding: 2px 6px;
    border-radius: var(--radius-xs);
    font-weight: 700;
}

.subjects-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.subject-row-item {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    transition: transform 0.15s ease, border-color 0.15s ease;
}

.subject-row-item:hover {
    border-color: rgba(29, 97, 242, 0.3);
}

.row-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.subj-title {
    font-family: var(--font-heading);
    font-size: 0.94rem;
    font-weight: 800;
    color: var(--text-main);
}

.pairs-highlight {
    color: var(--rgups-navy);
    font-weight: 800;
    font-size: 0.96rem;
}
@media (prefers-color-scheme: dark) {
    .pairs-highlight { color: #38bdf8; }
}

.row-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.hours-highlight {
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.repl-adjustment-tag {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    padding: 1px 6px;
    border-radius: var(--radius-xs);
    margin-left: 6px;
}
.repl-plus { background: #dcfce7; color: #15803d; }
.repl-minus { background: #fee2e2; color: #b91c1c; }

/* Dispatcher Notice */
.dispatcher-quote-card {
    background: linear-gradient(135deg, var(--rgups-navy-dark) 0%, var(--rgups-navy) 100%);
    color: #ffffff;
    border-radius: var(--radius-md);
    padding: 14px 16px;
    display: flex;
    gap: 12px;
    align-items: center;
    margin-top: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.disp-avatar {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.disp-role {
    display: block;
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--rgups-gold);
    margin-bottom: 2px;
    letter-spacing: 0.3px;
}

.disp-body p {
    font-size: 0.82rem;
    font-style: italic;
    opacity: 0.95;
    line-height: 1.35;
}

/* ==========================================================================
   6. Tab 2: Weekly Schedule
   ========================================================================== */
.schedule-head-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.sched-title-group h2 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 800;
}

.sub-muted {
    font-size: 0.74rem;
    color: var(--text-muted);
}

.btn-outline-sm {
    background: none;
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
}

.weekday-pills {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    margin-bottom: 14px;
}

.day-pill {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    padding: 10px 4px;
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 800;
    color: var(--text-muted);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.day-pill.active {
    background: var(--rgups-navy);
    border-color: var(--rgups-navy);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(14, 42, 71, 0.2);
}

.day-schedule-view {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pair-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    transition: border-color 0.2s ease, transform 0.15s ease;
}

.pair-card:hover {
    border-color: var(--rgups-blue);
    transform: translateY(-1px);
}

.pair-num-box {
    width: 38px;
    height: 38px;
    background: var(--rgups-navy);
    color: #ffffff;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pair-idx {
    font-family: var(--font-unbounded);
    font-size: 1rem;
    font-weight: 800;
    line-height: 1;
}

.pair-label {
    font-size: 0.55rem;
    text-transform: uppercase;
    opacity: 0.8;
}

.pair-details {
    flex: 1;
}

.pair-time {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 600;
}

.pair-subject {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 2px 0;
}

.pair-subject.empty {
    color: var(--text-muted);
    font-style: italic;
    font-weight: 500;
}

.pair-extra {
    font-size: 0.74rem;
    color: var(--text-muted);
}

.pair-edit-icon {
    color: var(--text-muted);
    font-size: 1rem;
    opacity: 0.5;
}

/* ==========================================================================
   7. Tab 3: Replacements System
   ========================================================================== */
.repl-banner {
    background: linear-gradient(135deg, #1e3a8a 0%, #0e2a47 100%);
    color: #ffffff;
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.banner-text h2 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.banner-text p {
    font-size: 0.76rem;
    opacity: 0.85;
    line-height: 1.3;
}

.replacements-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.repl-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-left: 4px solid var(--rgups-blue);
    border-radius: var(--radius-md);
    padding: 14px;
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.repl-card.type-cancel {
    border-left-color: var(--rgups-accent-red);
}

.repl-card.type-extra {
    border-left-color: var(--rgups-green);
}

.repl-info {
    flex: 1;
}

.repl-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.repl-badge {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 800;
    padding: 2px 6px;
    border-radius: var(--radius-xs);
    text-transform: uppercase;
}

.badge-replace { background: #dbeafe; color: #1e40af; }
.badge-cancel { background: #fee2e2; color: #991b1b; }
.badge-extra { background: #dcfce7; color: #166534; }

.repl-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
}

.repl-title {
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 2px;
}

.repl-note {
    font-size: 0.74rem;
    color: var(--text-muted);
    font-style: italic;
}

.btn-del-repl {
    background: none;
    border: none;
    color: #ef4444;
    font-size: 1.2rem;
    padding: 8px;
    cursor: pointer;
    border-radius: 50%;
}

.empty-state-box {
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px 20px;
    text-align: center;
}

.empty-icon {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.empty-state-box h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.empty-state-box p {
    font-size: 0.8rem;
    color: var(--text-muted);
    max-width: 320px;
    margin: 0 auto;
}

/* ==========================================================================
   8. Buttons & Actions
   ========================================================================== */
.btn-rail-primary {
    background: var(--rgups-navy);
    color: #ffffff;
    border: none;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(14, 42, 71, 0.2);
    transition: all 0.2s ease;
}

.btn-rail-primary:active {
    transform: scale(0.98);
}

.btn-rail-secondary {
    background: var(--bg-page);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
}

.btn-small-rail {
    background: var(--rgups-blue);
    color: #ffffff;
    border: none;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
}

/* ==========================================================================
   9. Modals
   ========================================================================== */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(14, 42, 71, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 16px;
    backdrop-filter: blur(4px);
}

.modal-window {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 440px;
    padding: 22px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    animation: modalPop 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 800;
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

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

.form-field label {
    display: block;
    font-size: 0.82rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-main);
}

.form-input, .form-select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-page);
    color: var(--text-main);
    font-size: 0.95rem;
    font-family: var(--font-sans);
}

.repl-type-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.type-option {
    cursor: pointer;
}

.type-option input {
    display: none;
}

.type-box {
    display: block;
    text-align: center;
    padding: 8px 4px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    background: var(--bg-page);
    transition: all 0.2s ease;
}

.type-option input:checked + .type-box {
    background: var(--rgups-navy);
    border-color: var(--rgups-navy);
    color: #ffffff;
}

.modal-foot {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.modal-foot button {
    flex: 1;
}

.help-text {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 4px;
    display: block;
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 16px 0 6px;
    border-top: 1px solid var(--border-color);
    margin-top: 16px;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    font-size: 0.78rem;
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--rgups-navy);
    font-weight: 600;
}

.eios-btn {
    background: var(--rgups-blue-light);
    color: var(--rgups-blue) !important;
    padding: 3px 8px;
    border-radius: var(--radius-xs);
}

.footer-copy {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   Числитель и Знаменатель (Numerator & Denominator System)
   ========================================================================== */
.parity-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}

.parity-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.current-parity-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-main);
}

.parity-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--rgups-blue);
    box-shadow: 0 0 8px var(--rgups-blue);
}

.btn-parity-flip {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    padding: 3px 9px;
    border-radius: var(--radius-full);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-parity-flip:hover {
    color: var(--rgups-navy);
    border-color: var(--rgups-navy);
}

.parity-filter-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.p-filter-btn {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 6px 4px;
    font-family: var(--font-heading);
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.p-filter-btn.active {
    background: var(--rgups-blue);
    border-color: var(--rgups-blue);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(29, 97, 242, 0.25);
}

/* Split Pair Cards in Schedule */
.pair-card.is-split-card {
    border-left: 4px solid var(--rgups-gold);
    align-items: stretch;
}

.split-rows-container {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 4px;
}

.split-row {
    background: var(--bg-card-subtle);
    border-radius: var(--radius-xs);
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    position: relative;
    transition: all 0.2s ease;
}

.split-row.is-current-parity {
    border-color: var(--rgups-blue);
    background: var(--rgups-blue-light);
}

.split-row-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.65rem;
    font-family: var(--font-heading);
    font-weight: 800;
    text-transform: uppercase;
    padding: 1px 6px;
    border-radius: 4px;
    margin-bottom: 2px;
}

.badge-num-style { background: #dbeafe; color: #1e40af; }
.badge-den-style { background: #fef3c7; color: #92400e; }

.split-row-title {
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.25;
}

.split-row-sub {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.split-active-indicator {
    position: absolute;
    right: 8px;
    top: 6px;
    font-size: 0.65rem;
    font-weight: 800;
    color: var(--rgups-blue);
    background: rgba(29, 97, 242, 0.12);
    padding: 1px 6px;
    border-radius: var(--radius-full);
}

/* Split Modal Form Controls */
.form-toggle-wrap {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    margin-bottom: 14px;
}

.toggle-control {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.toggle-control input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--rgups-navy);
    cursor: pointer;
}

.toggle-text {
    font-size: 0.88rem;
    color: var(--text-main);
}

.split-edit-block {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.split-edit-half {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    background: var(--bg-card-subtle);
}

.split-edit-half.num-half {
    border-left: 4px solid var(--rgups-blue);
}

.split-edit-half.den-half {
    border-left: 4px solid var(--rgups-gold);
}

.half-title-bar {
    margin-bottom: 8px;
}

.tag-num {
    font-size: 0.72rem;
    font-weight: 800;
    color: #1e40af;
    background: #dbeafe;
    padding: 2px 8px;
    border-radius: 4px;
}

.tag-den {
    font-size: 0.72rem;
    font-weight: 800;
    color: #92400e;
    background: #fef3c7;
    padding: 2px 8px;
    border-radius: 4px;
}

/* ==========================================================================
   Редактирование часов дисциплин (Subject Hours Customization)
   ========================================================================== */
.subject-row-item {
    cursor: pointer;
    position: relative;
    user-select: none;
}

.subject-row-item:hover {
    border-color: var(--rgups-blue);
    transform: translateY(-1px);
}

.subj-edit-hint {
    font-size: 0.75rem;
    opacity: 0.5;
    margin-left: 6px;
    transition: opacity 0.2s ease;
}

.subject-row-item:hover .subj-edit-hint {
    opacity: 1;
    color: var(--rgups-blue);
}

.badge-manual-hours {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    font-weight: 800;
    color: #b45309;
    background: #fef3c7;
    padding: 1px 6px;
    border-radius: 4px;
    margin-left: 6px;
    border: 1px solid rgba(180, 83, 9, 0.2);
}

.subj-edit-title-preview {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--rgups-navy);
    padding: 8px 12px;
    background: var(--bg-card-subtle);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}
@media (prefers-color-scheme: dark) {
    .subj-edit-title-preview { color: #38bdf8; }
}

.quick-adjust-section {
    margin-bottom: 14px;
}

.adjust-label {
    display: block;
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.quick-hours-adjust-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

.btn-adjust-step {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 4px;
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-main);
    cursor: pointer;
    text-align: center;
    transition: all 0.15s ease;
}

.btn-adjust-step:hover {
    background: var(--rgups-blue-light);
    border-color: var(--rgups-blue);
    color: var(--rgups-blue);
}

.btn-adjust-step:active {
    transform: scale(0.95);
}

.form-grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.help-text-calc {
    font-size: 0.76rem;
    color: var(--text-muted);
    background: var(--bg-card-subtle);
    padding: 8px 10px;
    border-radius: var(--radius-xs);
    border-left: 3px solid var(--rgups-blue);
    margin-bottom: 14px;
}

/* ==========================================================================
   Watermark Signature (13DANEK37)
   ========================================================================== */
.signature-watermark-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 18px auto 6px;
    padding: 8px 0;
    overflow-x: auto;
    pointer-events: none;
    user-select: none;
}

.ascii-signature {
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 0.62rem;
    line-height: 1.15;
    letter-spacing: 0.4px;
    color: var(--rgups-navy);
    opacity: 0.18;
    white-space: pre;
    text-align: center;
    transition: opacity 0.3s ease;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.05));
}

@media (prefers-color-scheme: dark) {
    .ascii-signature {
        color: #38bdf8;
        opacity: 0.16;
    }
}

/* ==========================================================================
   Интерактивный календарь четности недель (Week Parity Calendar)
   ========================================================================== */
.parity-top-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-parity-calendar-toggle {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--rgups-blue);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.2s ease;
}

.btn-parity-calendar-toggle:hover {
    background: var(--rgups-blue-light);
    border-color: var(--rgups-blue);
}

.calendar-parity-drawer {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin: 8px 0 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    animation: drawerSlideDown 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes drawerSlideDown {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

.cal-month-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2px 4px;
}

.cal-month-title {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-main);
}

.btn-cal-nav {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.btn-cal-nav:hover {
    background: var(--rgups-blue);
    color: #ffffff;
    border-color: var(--rgups-blue);
}

.cal-hint-bar {
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.3;
    padding: 2px 4px;
    text-align: center;
}

.cal-grid-header {
    display: grid;
    grid-template-columns: 56px repeat(7, 1fr);
    gap: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
}

.cal-th-parity {
    color: var(--rgups-blue);
}

.cal-grid-weeks {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cal-week-row {
    display: grid;
    grid-template-columns: 56px repeat(7, 1fr);
    gap: 4px;
    align-items: center;
    border-radius: var(--radius-xs);
    padding: 2px 0;
    transition: background 0.15s ease;
}

.cal-week-row.is-num-week {
    background: rgba(29, 97, 242, 0.05);
}

.cal-week-row.is-den-week {
    background: rgba(217, 119, 6, 0.06);
}

.cal-week-chip {
    padding: 4px 2px;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-size: 0.65rem;
    font-weight: 800;
    text-align: center;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
    user-select: none;
}

.cal-week-chip.chip-num {
    background: #dbeafe;
    color: #1e40af;
    border-color: rgba(30, 64, 175, 0.2);
}

.cal-week-chip.chip-den {
    background: #fef3c7;
    color: #92400e;
    border-color: rgba(146, 64, 14, 0.2);
}

.cal-week-chip:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.cal-day-cell {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-main);
    text-align: center;
    padding: 5px 0;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.cal-day-cell:hover {
    background: rgba(255, 255, 255, 0.4);
}

.cal-day-cell.out-month {
    opacity: 0.35;
    color: var(--text-muted);
}

.cal-day-cell.is-today {
    background: var(--rgups-navy);
    color: #ffffff !important;
    font-weight: 800;
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--rgups-gold);
}

@media (prefers-color-scheme: dark) {
    .cal-day-cell.is-today {
        background: #38bdf8;
        color: #0b131e !important;
        box-shadow: 0 0 0 2px #facc15;
    }
}

/* ==========================================================================
   Критичные стили календаря четности недель
   ========================================================================== */
.date-start-today-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #059669;
    font-size: 0.74rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: var(--radius-xs);
    margin-bottom: 6px;
}
@media (prefers-color-scheme: dark) {
    .date-start-today-badge {
        color: #34d399;
        background: rgba(16, 185, 129, 0.18);
    }
}

.parity-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 14px;
}

.parity-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.parity-top-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-parity-calendar-toggle {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--rgups-blue);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.15s ease;
}

.btn-parity-calendar-toggle:hover {
    background: var(--rgups-blue-light);
    border-color: var(--rgups-blue);
}

.btn-parity-flip {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-parity-flip:hover {
    background: var(--rgups-blue-light);
    border-color: var(--rgups-blue);
    color: var(--rgups-blue);
}

.calendar-parity-drawer {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin: 8px 0 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.calendar-parity-drawer.hidden {
    display: none !important;
}

.cal-month-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 6px;
}

.cal-month-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-main);
}

.btn-cal-nav {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 1.25rem;
    font-weight: 800;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.btn-cal-nav:hover {
    background: var(--rgups-blue);
    color: #ffffff;
    border-color: var(--rgups-blue);
}

.cal-hint-bar {
    font-size: 0.73rem;
    color: var(--text-muted);
    line-height: 1.35;
    padding: 2px 4px;
    text-align: center;
    background: rgba(29, 97, 242, 0.04);
    border-radius: var(--radius-xs);
}

.cal-grid-header {
    display: grid !important;
    grid-template-columns: 56px repeat(7, 1fr) !important;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--text-muted);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
    margin-top: 4px;
}

.cal-th-parity {
    color: var(--rgups-blue);
    font-weight: 800;
}

.cal-grid-weeks {
    display: flex !important;
    flex-direction: column !important;
    gap: 5px !important;
}

.cal-week-row {
    display: grid !important;
    grid-template-columns: 56px repeat(7, 1fr) !important;
    gap: 4px !important;
    align-items: center !important;
    border-radius: var(--radius-xs);
    padding: 3px 2px;
    transition: all 0.15s ease;
}

.cal-week-row.is-num-week {
    background: rgba(29, 97, 242, 0.08);
    border-left: 3px solid var(--rgups-blue);
}

.cal-week-row.is-den-week {
    background: rgba(217, 119, 6, 0.09);
    border-left: 3px solid #d97706;
}

.cal-week-chip {
    padding: 6px 2px;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-size: 0.68rem;
    font-weight: 800;
    text-align: center;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
    user-select: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.cal-week-chip.chip-num {
    background: #dbeafe;
    color: #1e40af;
    border-color: rgba(30, 64, 175, 0.3);
}

.cal-week-chip.chip-den {
    background: #fef3c7;
    color: #92400e;
    border-color: rgba(146, 64, 14, 0.3);
}

.cal-week-chip:hover {
    transform: scale(1.06);
    filter: brightness(1.05);
}

.cal-day-cell {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-main);
    text-align: center;
    padding: 7px 0;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
    background: rgba(255, 255, 255, 0.1);
}

.cal-day-cell:hover {
    background: rgba(29, 97, 242, 0.2);
    transform: scale(1.08);
}

.cal-day-cell.out-month {
    opacity: 0.3;
    color: var(--text-muted);
}

.cal-day-cell.is-today {
    background: var(--rgups-navy) !important;
    color: #ffffff !important;
    font-weight: 900;
    border-radius: 6px;
    box-shadow: 0 0 0 2px #d4af37, 0 2px 6px rgba(0,0,0,0.25);
}

@media (prefers-color-scheme: dark) {
    .cal-day-cell.is-today {
        background: #38bdf8 !important;
        color: #0b131e !important;
        box-shadow: 0 0 0 2px #facc15, 0 2px 6px rgba(0,0,0,0.4);
    }
}

/* Banner for replacement date */
.repl-date-banner {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xs);
    padding: 6px 10px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--rgups-blue);
    margin-top: 6px;
}

.repl-no-pairs-warning {
    color: #ef4444;
    background: #fef2f2;
    border: 1px solid #fecaca;
    padding: 8px 10px;
    border-radius: var(--radius-xs);
    font-size: 0.76rem;
    font-weight: 600;
    margin-top: 6px;
}
@media (prefers-color-scheme: dark) {
    .repl-no-pairs-warning {
        background: rgba(239, 68, 68, 0.15);
        border-color: rgba(239, 68, 68, 0.3);
        color: #fca5a5;
    }
}

/* Monday 'Разговоры о важном' & Lunch Break */
.monday-rv-banner {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(29, 97, 242, 0.08), rgba(212, 175, 55, 0.1));
    border: 1px solid rgba(29, 97, 242, 0.25);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    margin-bottom: 8px;
    font-size: 0.8rem;
    font-weight: 700;
}

.rv-badge {
    background: var(--rgups-navy);
    color: #ffffff;
    padding: 3px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    font-weight: 800;
}

.rv-title {
    color: var(--text-main);
    font-family: var(--font-heading);
}

.lunch-break-divider {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 8px 0;
    padding: 0 4px;
}

.lunch-line {
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.lunch-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: #d97706;
    background: rgba(217, 119, 6, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* ==========================================================================
   Плашки недельной нагрузки по дисциплинам (.badge-tag)
   ========================================================================== */
.badge-tag {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    color: #059669;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.28);
    padding: 2px 7px;
    border-radius: var(--radius-full);
    margin-left: 6px;
    letter-spacing: 0.2px;
    vertical-align: middle;
}

@media (prefers-color-scheme: dark) {
    .badge-tag {
        color: #34d399;
        background: rgba(16, 185, 129, 0.18);
        border-color: rgba(52, 211, 153, 0.35);
    }
}

/* ==========================================================================
   Статусы пар в реальном времени (Завершена, Идет сейчас, Предстоит)
   ========================================================================== */
.pair-status-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.68rem;
    font-family: var(--font-heading);
    font-weight: 800;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    margin-left: 6px;
    vertical-align: middle;
}

.tag-passed {
    background: rgba(100, 116, 139, 0.15);
    color: #64748b;
    border: 1px solid rgba(100, 116, 139, 0.25);
}

.tag-ongoing {
    background: rgba(34, 197, 94, 0.15);
    color: #16a34a;
    border: 1px solid rgba(34, 197, 94, 0.35);
    animation: pulseBeacon 1.8s infinite;
}

.tag-upcoming {
    background: rgba(29, 97, 242, 0.1);
    color: var(--rgups-blue);
    border: 1px solid rgba(29, 97, 242, 0.2);
}

.pair-card.pair-passed {
    opacity: 0.72;
    background: rgba(0, 0, 0, 0.02);
}

@media (prefers-color-scheme: dark) {
    .pair-card.pair-passed {
        opacity: 0.65;
        background: rgba(255, 255, 255, 0.015);
    }
    .tag-passed {
        color: #94a3b8;
        background: rgba(148, 163, 184, 0.12);
    }
    .tag-ongoing {
        color: #4ade80;
        background: rgba(74, 222, 128, 0.2);
    }
    .tag-upcoming {
        color: #38bdf8;
        background: rgba(56, 189, 248, 0.15);
    }
}

.pair-card.pair-ongoing {
    border-color: #22c55e !important;
    box-shadow: 0 0 12px rgba(34, 197, 94, 0.25);
}

/* ==========================================================================
   Режимы доступа: Просмотр (Viewer) и Администратор (Admin)
   ========================================================================== */
.header-right-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.auth-status-box {
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-auth-lock {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    padding: 4px 12px;
    font-family: var(--font-heading);
    font-size: 0.74rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    gap: 4px;
}

.btn-auth-lock:hover {
    background: rgba(255, 255, 255, 0.28);
    border-color: #ffffff;
    transform: translateY(-1px);
}

.badge-role-admin {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #ffffff;
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 800;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    box-shadow: 0 2px 8px rgba(217, 119, 6, 0.35);
}

.btn-auth-exit {
    background: rgba(239, 68, 68, 0.2);
    color: #ffffff;
    border: 1px solid rgba(239, 68, 68, 0.4);
    border-radius: var(--radius-full);
    padding: 3px 8px;
    font-size: 0.76rem;
    cursor: pointer;
    transition: background 0.15s ease;
}

.btn-auth-exit:hover {
    background: rgba(239, 68, 68, 0.45);
}

.modal-window-sm {
    max-width: 360px !important;
}

.login-error-msg {
    color: #ef4444;
    font-size: 0.76rem;
    font-weight: 700;
    margin-top: 6px;
}

.login-hint {
    color: var(--text-muted);
    font-size: 0.72rem;
    margin-top: 6px;
    line-height: 1.4;
}

.login-hint code {
    background: var(--bg-card-subtle);
    padding: 1px 5px;
    border-radius: 4px;
    font-family: var(--font-mono);
    color: var(--rgups-blue);
    font-weight: 700;
}

/* Ограничения для режима просмотра (обычные студенты) */
body.is-viewer-mode .btn-icon-soft#btn-toggle-date,
body.is-viewer-mode #btn-open-repl-modal,
body.is-viewer-mode #btn-quick-add-repl,
body.is-viewer-mode .btn-del-repl,
body.is-viewer-mode .pair-edit-icon,
body.is-viewer-mode .subj-edit-hint {
    display: none !important;
}

body.is-viewer-mode .subject-row-item {
    cursor: default !important;
}

body.is-viewer-mode .subject-row-item:hover {
    transform: none !important;
    border-color: var(--border-color) !important;
    background: var(--bg-card) !important;
}

body.is-viewer-mode .pair-card {
    cursor: pointer;
}

.btn-auth-pass-change {
    background: rgba(212, 175, 55, 0.2);
    color: #ffffff;
    border: 1px solid rgba(212, 175, 55, 0.4);
    border-radius: var(--radius-full);
    padding: 3px 8px;
    font-size: 0.76rem;
    cursor: pointer;
    transition: background 0.15s ease;
}

.btn-auth-pass-change:hover {
    background: rgba(212, 175, 55, 0.45);
}

/* ==========================================================================
   ATTENDANCE & ABSENCES JOURNAL (ЖУРНАЛ ПРОПУСКОВ)
   ========================================================================== */
.attendance-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.28) 0%, rgba(15, 23, 42, 0.45) 100%);
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    margin-bottom: 14px;
    gap: 12px;
    flex-wrap: wrap;
}

.attendance-banner-actions {
    display: flex;
    gap: 8px;
}

.attendance-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    margin-bottom: 12px;
    gap: 10px;
    flex-wrap: wrap;
}

.att-month-selector {
    display: flex;
    align-items: center;
    gap: 10px;
}

.att-month-title {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-main);
    min-width: 140px;
    text-align: center;
}

.att-quick-stats {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.att-quick-stats strong {
    color: #34d399;
    font-weight: 700;
}

.attendance-table-wrap {
    padding: 0;
    overflow: hidden;
    margin-bottom: 14px;
    border: 1px solid var(--border-card);
    background: var(--bg-card);
    border-radius: var(--radius-sm);
}

.attendance-table-scroll {
    width: 100%;
    overflow-x: auto;
    max-height: 68vh;
    position: relative;
    -webkit-overflow-scrolling: touch;
}

.attendance-table {
    width: max-content;
    min-width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.8rem;
    text-align: center;
}

.attendance-table th,
.attendance-table td {
    padding: 7px 6px;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    white-space: nowrap;
}

.attendance-table thead th {
    position: sticky;
    top: 0;
    background: #0f172a;
    z-index: 10;
    font-family: var(--font-heading);
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--text-muted);
}

.attendance-table thead th.th-day {
    min-width: 32px;
    padding: 6px 2px;
}

.attendance-table thead th.th-weekend {
    background: #1e1b4b;
    color: #a5b4fc;
}

.attendance-table thead th.th-today {
    background: #1e3a8a;
    color: #60a5fa;
}

.attendance-table thead th.th-total {
    background: #172554;
    color: #93c5fd;
    font-weight: 800;
    min-width: 50px;
}

/* Sticky left columns: # and Student Name */
.att-col-idx {
    position: sticky;
    left: 0;
    background: #0f172a;
    z-index: 5;
    min-width: 32px;
    max-width: 36px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
}

.att-col-name {
    position: sticky;
    left: 32px;
    background: #0f172a;
    z-index: 5;
    text-align: left;
    min-width: 155px;
    max-width: 180px;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-main);
    overflow: hidden;
    text-overflow: ellipsis;
    padding-left: 10px !important;
}

.attendance-table thead .att-col-idx,
.attendance-table thead .att-col-name {
    z-index: 15;
    background: #090e17;
}

.attendance-table tfoot .att-col-idx,
.attendance-table tfoot .att-col-name {
    z-index: 15;
    background: #090e17;
}

.attendance-table tbody tr:hover td {
    background: rgba(255, 255, 255, 0.03);
}

.attendance-table tbody tr:hover .att-col-idx,
.attendance-table tbody tr:hover .att-col-name {
    background: #1e293b;
}

/* Cells */
.att-cell {
    cursor: pointer;
    transition: background 0.15s ease;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    user-select: none;
}

.att-cell:hover {
    background: rgba(59, 130, 246, 0.25) !important;
}

.att-cell.has-val {
    background: rgba(245, 158, 11, 0.18);
    color: #fbbf24;
}

.att-cell.val-1 {
    background: rgba(245, 158, 11, 0.22);
    color: #fbbf24;
}

.att-cell.val-2 {
    background: rgba(249, 115, 22, 0.25);
    color: #fb923c;
}

.att-cell.val-3, .att-cell.val-4, .att-cell.val-5 {
    background: rgba(239, 68, 68, 0.28);
    color: #f87171;
}

.att-cell-weekend {
    background: rgba(255, 255, 255, 0.015);
}

.att-cell-today {
    box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.4);
}

.att-total-cell {
    font-family: var(--font-mono);
    font-weight: 800;
    color: #60a5fa;
    background: rgba(30, 58, 138, 0.15);
}

.att-total-hours-cell {
    font-family: var(--font-mono);
    font-weight: 800;
    color: #34d399;
    background: rgba(16, 185, 129, 0.15);
}

.attendance-table tfoot td {
    position: sticky;
    bottom: 0;
    background: #0f172a;
    z-index: 10;
    font-weight: 800;
    font-family: var(--font-mono);
    color: #f1f5f9;
    border-top: 2px solid rgba(255, 255, 255, 0.15);
}

/* Edit Attendance Cell Modal */
.modal-body-pad {
    padding: 16px;
}

.att-student-banner {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    margin-bottom: 14px;
}

.form-label-att {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.att-quick-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.btn-att-val {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    padding: 10px 6px;
    color: var(--text-main);
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-att-val:hover {
    background: var(--rgups-blue);
    border-color: var(--rgups-blue);
    color: #ffffff;
    transform: translateY(-1px);
}

.att-custom-row {
    display: flex;
    gap: 8px;
}

.att-hint-box {
    background: var(--bg-card-subtle);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 0.78rem;
    line-height: 1.4;
}