/* ============================================
   Components — Neumo-Academic v2
   ============================================ */

/* ---- Teacher Palette ---- */
.palette-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem 1rem;
    box-shadow: var(--shadow-card);
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
    max-height: 320px;
    overflow: hidden;
}

.palette-container .palette-groups {
    overflow-y: auto;
    max-height: 100%;
    padding-right: 6px;
    margin-right: -6px;
    flex: 1;
    min-height: 0;
}

.palette-container .palette-groups::-webkit-scrollbar { width: 6px; }
.palette-container .palette-groups::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: 99px;
}
.palette-container .palette-groups::-webkit-scrollbar-track {
    background: transparent;
}

@media (max-width: 768px) {
    .palette-container { max-height: 220px; }
}

.palette-container h3 {
    font-family: var(--font-heading);
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.palette-container h3 i {
    color: var(--accent);
    font-size: 12px;
}

.palette-count {
    margin-left: auto;
    color: var(--text-tertiary);
    font-weight: 400;
    font-size: 11.5px;
    letter-spacing: 0;
    text-transform: none;
}

.palette-groups {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 20px;
}

.palette-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
    padding: 10px 12px;
    background: var(--bg-raised);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
}

.palette-group__label {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 12.5px;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    padding: 2px 0;
}

.palette-group__label:hover {
    color: var(--accent);
}

.palette-group__label > i {
    color: var(--accent);
    font-size: 12px;
}

.palette-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.palette-item {
    width: 144px;
    min-height: 64px;
}

/* ---- Timetable Grid ---- */
.timetable-wrapper {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-card);
    overflow-x: auto;
    margin-bottom: 1.75rem;
}

.timetable-grid {
    display: grid;
    gap: 4px;
    min-width: 860px;
    background: transparent;
    border: none;
    border-radius: 0;
    overflow: visible;
    padding: 4px 0 0;
}

/* Headers */
.grid-header {
    background: var(--bg-raised);
    padding: 10px 8px;
    text-align: center;
    font-weight: 600;
    font-family: var(--font-heading);
    color: var(--text-secondary);
    font-size: 12.5px;
    border: none;
    border-radius: var(--radius-xs);
    letter-spacing: 0.01em;
}

.time-header {
    background: var(--bg-raised);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 6px;
    font-size: 12.5px;
    color: var(--text-primary);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-xs);
    font-family: var(--font-heading);
}

.time-header--day-label {
    cursor: context-menu;
    transition: background var(--transition-fast);
}

.time-header--day-label:hover {
    background: var(--bg-hover);
}

/* ---- Drop Zones ---- */
.drop-zone {
    background: var(--bg-surface);
    border: 1px dashed var(--border-light);
    border-radius: var(--radius-sm);
    min-height: 72px;
    display: flex;
    align-items: stretch;
    justify-content: stretch;
    transition: background var(--transition-fast), border-color var(--transition-fast);
    padding: 4px;
    position: relative;
}

.drop-zone:hover {
    background: var(--bg-raised);
    border-color: var(--border-default);
}

.drop-zone.drag-over {
    background: var(--accent-soft);
    border: 1px solid var(--accent);
}

.drop-zone.dz-available {
    background: var(--success-soft);
    border: 1px solid var(--success);
}

.drop-zone.dz-booked {
    background: var(--danger-soft);
    border: 1px solid var(--danger);
    cursor: not-allowed;
}

/* Drop zones containing a lesson card — no dashed border (card has its own) */
.drop-zone:has(.lesson-card:not(.subject-Free)) {
    border-style: solid;
    border-color: transparent;
}

/* ---- Lesson Cards ---- */
.lesson-card {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-sm);
    padding: 10px 12px 9px;
    cursor: grab;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 3px;
    border: 1px solid var(--border-light);
    background: var(--bg-surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    user-select: none;
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

/* Subject signature: 3px colored top bar */
.lesson-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--subj-gen);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.lesson-card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-sm);
    transform: none;
}

.lesson-card:active {
    cursor: grabbing;
    transform: none;
}

.lesson-card.dragging {
    opacity: 0.45;
    border-style: dashed;
    box-shadow: none;
    transform: none;
}

.lesson-delete-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    background: transparent;
    color: var(--text-tertiary);
    border: none;
    border-radius: var(--radius-xs);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
    box-shadow: none;
    z-index: 10;
}

.lesson-card:hover .lesson-delete-btn {
    opacity: 1;
}

.lesson-delete-btn:hover {
    transform: none;
    background: var(--bg-hover);
    color: var(--danger);
}

.lesson-lock-btn {
    position: absolute;
    top: 4px;
    right: 26px;
    background: transparent;
    color: var(--text-tertiary);
    border: none;
    border-radius: var(--radius-xs);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
    box-shadow: none;
    z-index: 10;
}

.lesson-card:hover .lesson-lock-btn,
.lesson-lock-btn.is-locked {
    opacity: 1;
}

.lesson-lock-btn:hover {
    transform: none;
    background: var(--bg-hover);
    color: var(--accent);
}

.lesson-lock-btn.is-locked {
    color: var(--accent);
    background: var(--accent-soft);
}

.subject-name {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 13px;
    line-height: 1.3;
    color: var(--text-primary);
}

.teacher-name {
    font-size: 11.5px;
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 400;
    color: var(--text-secondary);
}

.teacher-name i {
    color: var(--text-tertiary);
}

.workload-stat {
    font-size: 10.5px;
    font-weight: 600;
    margin-top: 3px;
    padding-top: 3px;
    border-top: 1px solid rgba(0,0,0,0.06);
    opacity: 0.9;
}

.workload-stat.is-on-target  { color: #047857; }
.workload-stat.is-under-target { color: #15803d; }
.workload-stat.is-over-target  { color: #b91c1c; }

/* Read-only drop zone (teacher perspective) — no pointer events */
.drop-zone--readonly {
    pointer-events: none;
}

/* Card class-name label (new) */
.class-name {
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 4px;
    opacity: 0.65;
    margin-top: 2px;
}

/* Card dimmed state (filter) */
.lesson-card.dimmed {
    opacity: 0.18;
    pointer-events: none;
    transform: none !important;
    box-shadow: none !important;
}

/* Current-time slot highlight — subtle */
.drop-zone.current-time-slot {
    background: var(--accent-soft) !important;
    border-color: var(--accent) !important;
}

.time-header.current-day {
    color: var(--text-primary);
    background: var(--accent-soft);
    border-right-color: var(--accent);
    font-weight: 600;
}

/* Break zone (lunch) */
.break-zone {
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 4px,
        rgba(0,0,0,0.02) 4px,
        rgba(0,0,0,0.02) 8px
    );
    background-color: var(--bg-raised);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 64px;
    pointer-events: none;
    border: none;
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.break-label {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    writing-mode: vertical-lr;
    transform: rotate(180deg);
}

.break-header {
    background: var(--bg-raised) !important;
    color: var(--text-tertiary) !important;
    font-size: 11px;
    border-bottom-color: var(--border-light) !important;
}

/* Filter / Search — pill input card */
.filter-bar {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 6px 14px;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-card);
}

.filter-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    position: relative;
}

.filter-icon {
    color: var(--text-tertiary);
    font-size: 14px;
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

.filter-label { display: none; }

.filter-select {
    flex: 1;
    padding: 8px 8px 8px 28px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--text-primary);
    outline: none;
    cursor: text;
    min-width: 200px;
    transition: background var(--transition-fast);
}

.filter-select::placeholder {
    color: var(--text-tertiary);
}

.filter-select:focus { box-shadow: none; }

.filter-clear-btn { display: inline-flex !important; }

.filter-status {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-tertiary);
    margin-left: 4px;
}

/* Mobile btn-icon */
.btn-icon {
    width: 36px;
    padding: 0;
    justify-content: center;
    display: none;
}

/* ---- Subject themes — soft tint + saturated top bar ---- */
.lesson-card.subj-Math { background: var(--subj-math-tint); }
.lesson-card.subj-Math::before { background: var(--subj-math); }
.lesson-card.subj-Math .subject-name { color: #8a2a23; }

.lesson-card.subj-Sci { background: var(--subj-sci-tint); }
.lesson-card.subj-Sci::before { background: var(--subj-sci); }
.lesson-card.subj-Sci .subject-name { color: #2a4180; }

.lesson-card.subj-Thai { background: var(--subj-thai-tint); }
.lesson-card.subj-Thai::before { background: var(--subj-thai); }
.lesson-card.subj-Thai .subject-name { color: #2e5a36; }

.lesson-card.subj-Eng { background: var(--subj-eng-tint); }
.lesson-card.subj-Eng::before { background: var(--subj-eng); }
.lesson-card.subj-Eng .subject-name { color: #765510; }

.lesson-card.subj-Soc { background: var(--subj-soc-tint); }
.lesson-card.subj-Soc::before { background: var(--subj-soc); }
.lesson-card.subj-Soc .subject-name { color: #4d3270; }

.lesson-card.subj-PE { background: var(--subj-pe-tint); }
.lesson-card.subj-PE::before { background: var(--subj-pe); }
.lesson-card.subj-PE .subject-name { color: #804119; }

.lesson-card.subj-Gen { background: var(--subj-gen-tint); }
.lesson-card.subj-Gen::before { background: var(--subj-gen); }

.lesson-card.subject-Free {
    border-style: dashed;
    border-color: var(--border-light);
    background: transparent;
    box-shadow: none;
}
.lesson-card.subject-Free::before { display: none; }
.lesson-card.subject-Free .subject-name {
    color: var(--text-tertiary);
    font-weight: 400;
}

/* Subject badge — soft tinted chip with colored dot prefix */
.subject-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 3px 10px 3px 8px;
    background: var(--subj-gen-tint);
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 12.5px;
    color: var(--text-primary);
    line-height: 1.3;
    font-weight: 500;
}

.subject-badge::before {
    content: "";
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--subj-gen);
    flex-shrink: 0;
}

.subject-badge.subj-Math { background: var(--subj-math-tint); }
.subject-badge.subj-Math::before { background: var(--subj-math); }
.subject-badge.subj-Sci  { background: var(--subj-sci-tint);  }
.subject-badge.subj-Sci::before  { background: var(--subj-sci); }
.subject-badge.subj-Thai { background: var(--subj-thai-tint); }
.subject-badge.subj-Thai::before { background: var(--subj-thai); }
.subject-badge.subj-Eng  { background: var(--subj-eng-tint);  }
.subject-badge.subj-Eng::before  { background: var(--subj-eng); }
.subject-badge.subj-Soc  { background: var(--subj-soc-tint);  }
.subject-badge.subj-Soc::before  { background: var(--subj-soc); }
.subject-badge.subj-PE   { background: var(--subj-pe-tint);   }
.subject-badge.subj-PE::before   { background: var(--subj-pe); }
.subject-badge.subj-Gen  { background: var(--subj-gen-tint);  }
.subject-badge.subj-Gen::before  { background: var(--subj-gen); }

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent);
    opacity: 0.6;
}

.empty-state p {
    font-size: 14.5px;
    color: var(--text-secondary);
    line-height: 1.55;
    max-width: 30rem;
    margin: 0 auto;
}

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(43, 38, 32, 0.42);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(6px);
    animation: fadeIn 0.18s var(--ease-out);
}

.modal {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    box-shadow: var(--shadow-modal);
    animation: modalIn 0.26s var(--ease-out);
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(8px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal h2 {
    font-family: var(--font-heading);
    margin-bottom: 22px;
    font-weight: 500;
    font-size: 18px;
    color: var(--text-primary);
    letter-spacing: -0.005em;
}

.modal-lg {
    min-width: 760px;
    max-width: 92vw;
}

.settings-tabs-header {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-light);
}

.settings-tab-btn {
    background: transparent;
    border: none;
    padding: 10px 18px 10px 0;
    margin-right: 22px;
    font-family: var(--font-body);
    font-size: 13.5px;
    color: var(--text-tertiary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    margin-bottom: -1px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.settings-tab-btn:hover {
    color: var(--text-primary);
}

.settings-tab-btn.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent);
    font-weight: 600;
}

.settings-tabs-content {
    margin-top: 20px;
    min-height: 350px;
}

.settings-panel-tab {
    animation: fadeIn 0.25s var(--ease-out) forwards;
}

.settings-panel-tab.hidden {
    display: none;
}

/* ---- List Items ---- */
.list-container {
    max-height: 260px;
    overflow-y: auto;
    margin-bottom: 14px;
    padding-right: 6px;
}

.list-container::-webkit-scrollbar { width: 4px; }
.list-container::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 99px; }

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-surface);
    padding: 8px 12px;
    margin-bottom: 6px;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    font-weight: 500;
    border: 1px solid var(--border-light);
}

.btn-del {
    background: transparent;
    color: var(--text-tertiary);
    padding: 5px;
    border-radius: var(--radius-xs);
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    font-size: 13px;
}

.btn-del:hover {
    background: var(--danger-soft);
    color: var(--danger);
}

/* ---- Add Form ---- */
.add-form {
    display: flex;
    gap: 6px;
    align-items: center;
}

.add-form input,
.add-form select {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 13.5px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.add-form input::placeholder {
    color: var(--text-tertiary);
}

.add-form input:focus,
.add-form select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---- Workload Dashboard ---- */
.workload-dashboard {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-xs);
}

.workload-dashboard h3 {
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.workload-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.workload-pill {
    background: var(--bg-raised);
    border: 1px solid var(--border-light);
    padding: 14px 18px;
    border-radius: var(--radius-md);
    flex: 1;
    min-width: 260px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.workload-pill:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.workload-pill .teacher-info {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.workload-pill .stats {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.workload-pill .stat-main {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.workload-pill .stat-sub {
    font-size: 11.5px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: var(--radius-xs);
    margin-top: 4px;
}

.stat-good { background: var(--success-soft); color: #15803d; }
.stat-bad { background: var(--danger-soft); color: #b91c1c; }

/* ---- Teacher Preview Panel ---- */
.teacher-preview-panel {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-default);
    position: relative;
    animation: slideUp 0.35s var(--ease-out) forwards;
}

.teacher-preview-panel.hidden {
    display: none !important;
}

.teacher-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.teacher-preview-header h3 {
    font-family: var(--font-heading);
    color: var(--accent);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-close-preview {
    background: var(--bg-raised);
    border: 1px solid var(--border-default);
    color: var(--text-tertiary);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.btn-close-preview:hover {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
    transform: scale(1.08);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .dashboard-layout {
        grid-template-columns: 1fr;
    }

    .app-sidebar {
        position: relative;
        top: 0;
        max-height: none;
    }

    .timetable-grid {
        min-width: 700px;
    }
}

@media (max-width: 768px) {
    /* Show hamburger, hide sidebar label */
    .btn-icon { display: inline-flex; }

    .dashboard-layout {
        grid-template-columns: 1fr;
        padding: 0.75rem;
        gap: 0.75rem;
    }

    /* Sidebar slides in as overlay on mobile */
    .app-sidebar {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 260px;
        z-index: 200;
        border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
        box-shadow: var(--shadow-xl);
        overflow-y: auto;
        padding-top: 4rem;
        max-height: 100vh;
    }

    .app-sidebar.sidebar-open {
        display: flex;
        flex-direction: column;
        animation: slideInLeft 0.25s var(--ease-out);
    }

    @keyframes slideInLeft {
        from { transform: translateX(-100%); opacity: 0; }
        to   { transform: translateX(0);    opacity: 1; }
    }

    .timetable-wrapper { padding: 0.75rem; }
    .timetable-grid { min-width: 560px; }

    .palette-item { width: 140px; }

    .filter-bar { padding: 8px 12px; }
    .filter-select { min-width: 160px; }
}

@media (max-width: 480px) {
    .app-header { padding: 0 0.75rem; height: 52px; }
    .logo h1 { font-size: 0.95rem; }
    .btn { font-size: 12.5px; padding: 6px 10px; }

    .modal-lg {
        min-width: auto;
        max-width: 96vw;
        padding: 16px;
    }
}

/* ============================================
   Extracted utility & component classes
   (formerly inline styles in JS/HTML)
   ============================================ */

/* Vertical divider used in the header controls */
.divider-v {
    width: 1px;
    height: 24px;
    background: var(--border-default);
    margin: 0 4px;
}

/* Modal footer (action row at bottom of a modal) */
.modal-footer {
    margin-top: 1.5rem;
    text-align: right;
    border-top: 1px solid var(--border-default);
    padding-top: 1.25rem;
}

.modal-footer-flex {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    border-top: 1px solid var(--border-default);
    padding-top: 1.25rem;
    margin-top: 0.75rem;
}

/* Section wrapper inside modals (label + control) */
.modal-section {
    margin-bottom: 1rem;
}

.modal-section__label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-tertiary);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.modal-section__row {
    display: flex;
    gap: 6px;
    align-items: center;
}

/* Full-width text input used in modals */
.field-input--text {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field-input--text:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Inline error message under a form field */
.field-error {
    display: block;
    font-size: 12px;
    color: var(--danger);
    margin-top: 4px;
    line-height: 1.3;
    min-height: 14px;
}

.field-input--invalid,
.field-input--invalid:focus {
    border-color: var(--danger) !important;
    box-shadow: 0 0 0 3px var(--danger-soft) !important;
}

.field-error--inline {
    display: inline-block;
    margin-left: 6px;
}

/* Subject badge — single source of truth for visual chip */
.subject-badge {
    padding: 3px 8px;
    border-radius: var(--radius-xs);
    font-size: 13px;
    display: inline-block;
    line-height: 1.2;
}

.subject-badge--sm {
    padding: 2px 7px;
    font-size: 12px;
    margin: 1px 2px;
}

.subject-badge__count {
    opacity: 0.6;
    margin-left: 3px;
    font-size: 11px;
}

/* Edit-teacher modal: row showing one subject with target hours */
.subj-target-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: var(--bg-raised);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
}

.subj-target-row .subject-badge {
    flex: 1;
}

.subj-target-row__unit {
    font-size: 11px;
    color: var(--text-tertiary);
}

.target-input {
    width: 65px;
    padding: 5px 8px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    font-family: var(--font-body);
    text-align: center;
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.target-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Settings table — column widths set by markup; reusable cells */
.settings-table td.col-total {
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 13px;
}

.settings-table td.col-actions {
    text-align: center;
    white-space: nowrap;
}

.settings-table td.col-center {
    text-align: center;
}

/* Icon prefix on a teacher row name */
.teacher-row-icon {
    margin-right: 6px;
    color: var(--text-tertiary);
}

/* Edit/trash icon buttons in settings rows */
.btn-icon-action {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px 5px;
    font-size: 13px;
    border-radius: var(--radius-xs);
    transition: all var(--transition-fast);
}

.btn-icon-edit {
    color: var(--accent);
}

.btn-icon-edit:hover {
    background: var(--accent-soft);
}

.btn-icon-trash {
    color: var(--text-tertiary);
}

.btn-icon-trash:hover {
    background: var(--danger-soft);
    color: var(--danger);
}

/* Inline number input for subject hours */
.inline-input-hours {
    width: 60px;
    padding: 4px 8px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.inline-input-hours:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Class type pill in settings rows */
.class-type-pill {
    color: #fff;
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 11px;
    margin-left: 6px;
    display: inline-block;
    font-weight: 500;
}

.class-type-pill--regular { background: #0369a1; }
.class-type-pill--nursery { background: #7c3aed; }

/* Small "child" icon next to nursery class in sidebar */
.sidebar-nursery-icon {
    font-size: 11px;
    opacity: 0.7;
    margin-left: 2px;
}

/* Inline-rename UI in settings */
.inline-name {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    padding: 2px 4px;
    margin: -2px -4px;
    border-radius: var(--radius-xs);
    transition: background var(--transition-fast);
}

.inline-name:hover {
    background: var(--bg-hover);
}

.inline-name__pen {
    opacity: 0;
    font-size: 11px;
    color: var(--accent);
    transition: opacity var(--transition-fast);
}

.inline-name:hover .inline-name__pen {
    opacity: 0.7;
}

.inline-edit-input {
    padding: 4px 8px;
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    font-family: var(--font-body);
    font-size: 13.5px;
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-soft);
    min-width: 140px;
}

tr.row-editing {
    background: rgba(250, 204, 21, 0.08);
}

/* Print button used inside a timetable wrapper */
.btn-print {
    margin-bottom: 1rem;
}

.print-menu {
    display: flex;
    gap: 8px;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

@media print {
    .print-menu { display: none !important; }
    body[data-print-mode="all"] .timetable-container {
        page-break-after: always;
    }
    body[data-print-mode="all"] .timetable-container:last-child {
        page-break-after: auto;
    }
}

/* Lesson card: "exact time" chip shown when a card spans an overlapping slot */
.lesson-card .exact-time-chip {
    font-size: 10px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-weight: normal;
    background: var(--glass-base);
    border-radius: 4px;
    padding: 1px 4px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    align-self: flex-start;
}

/* Drop-zone configured to anchor an absolutely-positioned offset lesson card */
.drop-zone--offset-anchor {
    position: relative;
}

/* Lesson card whose horizontal position is offset (cross-grid overlap) */
.lesson-card--offset {
    position: absolute;
    top: 6px;
    bottom: 6px;
    z-index: 10;
    margin: 0;
}

/* Empty/free lesson card centered text */
.lesson-card--empty .subject-name {
    text-align: center;
    opacity: 0.5;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Lock indicator on a lesson card */
.lesson-card.locked::after {
    content: "\f023"; /* fa-lock */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    top: 8px;
    left: 8px;
    font-size: 10px;
    color: var(--text-tertiary);
    opacity: 0.55;
    pointer-events: none;
}

/* Picked-up (tap-to-place) — gentle pulse */
.lesson-card.picked-up,
.palette-item.picked-up .lesson-card {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-color: var(--accent);
    animation: pickedSoftPulse 1.6s ease-in-out infinite;
}

@keyframes pickedSoftPulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--accent-soft); }
    50%      { box-shadow: 0 0 0 6px var(--accent-soft); }
}

body.has-picked-up .drop-zone.dz-available {
    cursor: copy;
}

body.has-picked-up .drop-zone.dz-available:hover {
    background: var(--success-soft);
    border-color: var(--success);
}

/* Floating "currently picked up" indicator pill */
.picked-up-indicator {
    position: fixed;
    top: 76px;
    right: 1.5rem;
    z-index: 1080;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 10px 12px 10px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--accent);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-pop);
    color: var(--text-primary);
    font-size: 13px;
    min-width: 220px;
    max-width: 300px;
    animation: pickIndicatorIn 0.18s var(--ease-out);
}

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

.picked-up-indicator > i {
    color: var(--accent);
    font-size: 14px;
}

.picked-up-indicator__body { flex: 1; min-width: 0; }

.picked-up-indicator__subj {
    font-weight: 600;
    font-size: 13px;
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.picked-up-indicator__teach {
    color: var(--text-secondary);
    font-size: 11.5px;
    line-height: 1.2;
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.picked-up-indicator__cancel {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: var(--radius-xs);
    font-size: 11px;
}

.picked-up-indicator__cancel:hover {
    background: var(--bg-hover);
    color: var(--danger);
}

.picked-up-indicator__bulk:not(:empty) {
    flex: 0 0 100%;
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px dashed var(--border-light);
}

.bulk-fill-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    background: var(--accent-action-soft);
    color: var(--accent-action);
    border: 1px solid var(--accent-action);
    border-radius: var(--radius-sm);
    padding: 7px 10px;
    cursor: pointer;
    font-size: 12.5px;
    font-weight: 600;
    transition: background var(--transition-fast);
}

.bulk-fill-chip:hover { background: var(--accent-action); color: var(--accent-action-text); }
.bulk-fill-chip > i { font-size: 12px; }

/* Suggest-teacher popover */
.suggest-popover {
    position: fixed;
    z-index: 1090;
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-pop);
    min-width: 280px;
    max-width: 340px;
    padding: 6px;
    animation: fadeIn 0.16s var(--ease-out);
}

.suggest-popover__header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px 6px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-tertiary);
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 4px;
}

.suggest-popover__header > i { color: var(--accent); font-size: 12px; }

.suggest-popover__body {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.suggest-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
    width: 100%;
    transition: background var(--transition-fast);
    font-size: 13px;
}

.suggest-row:hover { background: var(--bg-hover); }

.suggest-row > .subject-badge { flex-shrink: 0; }

.suggest-row__teacher {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.suggest-row__hours {
    color: var(--text-tertiary);
    font-size: 11.5px;
    white-space: nowrap;
}

.suggest-popover__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 18px 12px;
    color: var(--text-tertiary);
    font-size: 13px;
    text-align: center;
}

.suggest-popover__empty > i {
    font-size: 22px;
    color: var(--text-tertiary);
    opacity: 0.6;
}

.suggest-popover__more {
    padding: 8px 10px;
    font-size: 11.5px;
    color: var(--text-tertiary);
    font-style: italic;
}

.suggest-popover__footer {
    border-top: 1px solid var(--border-light);
    padding: 6px;
    margin-top: 4px;
}

.suggest-popover__skip {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: var(--radius-xs);
    width: 100%;
    text-align: center;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.suggest-popover__skip:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Context menu (long-press / right-click) */
.context-menu {
    position: fixed;
    z-index: 1500;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    min-width: 200px;
    padding: 6px;
    animation: fadeIn 0.12s var(--ease-out);
}

.context-menu__item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    background: transparent;
    border: none;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 13.5px;
    color: var(--text-primary);
    text-align: left;
    transition: background var(--transition-fast);
}

.context-menu__item:hover {
    background: var(--bg-hover);
}

.context-menu__item.is-danger {
    color: var(--danger);
}

.context-menu__item.is-danger:hover {
    background: var(--danger-soft);
}

.context-menu__divider {
    height: 1px;
    background: var(--border-light);
    margin: 4px 0;
}

/* Confirm dialog (styled replacement for native confirm) */
.confirm-dialog {
    min-width: 420px;
    max-width: 540px;
}

.confirm-dialog__body {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 1rem;
}

.confirm-dialog__impact {
    background: var(--bg-raised);
    border: 1px solid var(--border-light);
    border-left: 3px solid var(--accent);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    margin: 0.75rem 0;
}

.confirm-dialog.is-danger .confirm-dialog__impact {
    border-left-color: var(--danger);
}

.confirm-dialog__option {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    color: var(--text-secondary);
    margin: 0.5rem 0 1rem 0;
    cursor: pointer;
    user-select: none;
}

.confirm-dialog__option input[type=checkbox] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
}

/* Header buttons disabled state */
.btn[disabled],
.btn:disabled {
    opacity: 0.4;
    pointer-events: none;
    cursor: not-allowed;
}

/* Header undo/redo/conflicts icon-only buttons */
.btn-header-icon {
    position: relative;
}

.btn-header-icon__badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--danger);
    color: #fff;
    font-size: 9.5px;
    font-weight: 700;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 99px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-surface);
    line-height: 1;
}

/* Conflict drawer */
.conflict-drawer {
    position: fixed;
    top: 60px;
    right: 0;
    bottom: 0;
    width: 360px;
    background: var(--bg-surface);
    border-left: 1px solid var(--border-light);
    box-shadow: var(--shadow-pop);
    z-index: 90;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.26s var(--ease-out);
}

.conflict-drawer.is-open {
    transform: translateX(0);
}

.conflict-drawer__header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.conflict-drawer__title {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 14px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.conflict-drawer__body {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px;
}

.conflict-drawer__tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-light);
    padding: 0 12px;
}

.cd-tab {
    background: transparent;
    border: none;
    padding: 10px 14px;
    font-size: 13px;
    color: var(--text-tertiary);
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.cd-tab:hover { color: var(--text-primary); }

.cd-tab.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent);
    font-weight: 600;
}

.cd-tab__count {
    color: var(--text-tertiary);
    font-weight: 400;
    margin-left: 2px;
}

.stat-group { margin-bottom: 18px; }

.stat-group__title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}

.stat-row {
    padding: 8px 0 10px;
    border-bottom: 1px solid var(--border-light);
}

.stat-row:last-child { border-bottom: none; }

.stat-row__head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 5px;
    font-size: 13px;
}

.stat-row__name {
    color: var(--text-primary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.stat-row__num {
    color: var(--text-tertiary);
    font-size: 11.5px;
    flex-shrink: 0;
}

.stat-bar {
    height: 4px;
    background: var(--bg-sunken);
    border-radius: 99px;
    overflow: hidden;
}

.stat-bar__fill {
    height: 100%;
    border-radius: 99px;
    background: var(--accent);
    transition: width var(--transition);
}

.stat-bar.stat-good .stat-bar__fill { background: var(--success); }
.stat-bar.stat-warn .stat-bar__fill { background: var(--warn); }
.stat-bar.stat-low .stat-bar__fill  { background: var(--danger); }

.stat-empty {
    padding: 12px 0;
    color: var(--text-tertiary);
    font-size: 12.5px;
    text-align: center;
}

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

.conflict-group__title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.conflict-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 10px;
    margin-bottom: 0;
    background: transparent;
    border: none;
    box-shadow: inset 0 -1px 0 var(--border-light);
    border-radius: 0;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-primary);
    text-align: left;
    width: 100%;
    transition: background var(--transition-fast);
}

.conflict-row:hover {
    background: var(--bg-hover);
    transform: none;
}

.conflict-row .row-icon {
    color: var(--text-tertiary);
    font-size: 12px;
}

.conflict-row.is-warn .row-icon { color: var(--warn, #d97706); }
.conflict-row.is-error .row-icon { color: var(--danger); }

.conflict-empty {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-tertiary);
    font-size: 13px;
}

.conflict-empty i {
    font-size: 2rem;
    color: var(--success);
    margin-bottom: 8px;
    display: block;
}

/* Cell flash highlight when navigated-to from conflict drawer */
@keyframes cellFlash {
    0%, 100% { box-shadow: inset 0 0 0 1px var(--border-light); }
    20%, 60% { box-shadow: inset 0 0 0 3px var(--accent), 0 0 0 4px var(--accent-soft); }
}

.drop-zone.is-flashing {
    animation: cellFlash 1.6s ease-in-out;
}

/* Filter chips */
.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 4px 3px 10px;
    background: var(--accent-soft);
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 99px;
    font-size: 12.5px;
    font-weight: 500;
    line-height: 1;
}

.filter-chip__close {
    background: transparent;
    border: none;
    color: var(--accent);
    cursor: pointer;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    transition: background var(--transition-fast);
}

.filter-chip__close:hover {
    background: var(--accent);
    color: #fff;
}

/* Toast — action button + dismiss + progress */
.toast {
    position: relative;
    overflow: hidden;
}

.toast__close {
    background: transparent;
    border: none;
    color: inherit;
    opacity: 0.5;
    cursor: pointer;
    padding: 4px 6px;
    margin-left: auto;
    font-size: 11px;
    transition: opacity var(--transition-fast);
}

.toast__close:hover {
    opacity: 1;
}

.toast__action {
    background: transparent;
    border: 1px solid currentColor;
    color: inherit;
    padding: 4px 10px;
    border-radius: var(--radius-xs);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 12.5px;
    cursor: pointer;
    margin-left: 8px;
    transition: background var(--transition-fast);
}

.toast__action:hover {
    background: rgba(0, 0, 0, 0.08);
}

.toast__progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: currentColor;
    opacity: 0.35;
    transform-origin: left center;
    animation: toastProgress var(--toast-duration, 3000ms) linear forwards;
}

@keyframes toastProgress {
    from { transform: scaleX(1); }
    to   { transform: scaleX(0); }
}

/* Shortcut help overlay */
.shortcut-help table {
    width: 100%;
    border-collapse: collapse;
}

.shortcut-help td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--border-light);
    font-size: 13.5px;
}

.shortcut-help td.key {
    width: 38%;
    color: var(--text-tertiary);
}

kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--bg-raised);
    border: 1px solid var(--border-default);
    border-bottom-width: 2px;
    border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 12px;
    color: var(--text-primary);
    line-height: 1;
}

/* First-run tip pill */
.first-run-tip {
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 1360px;
    margin: 12px auto 0;
    padding: 10px 14px 10px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    font-size: 13px;
    color: var(--text-secondary);
    width: calc(100% - 3.5rem);
}

.first-run-tip > i {
    color: var(--accent);
    font-size: 16px;
}

.first-run-tip > span { flex: 1; }

.first-run-tip__close {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-xs);
    font-size: 12px;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.first-run-tip__close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Permission-needed banner */
.permission-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    margin-bottom: 1rem;
    background: rgba(180, 83, 9, 0.06);
    border: 1px solid rgba(180, 83, 9, 0.25);
    border-left: 3px solid var(--warn);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 13.5px;
}

.permission-banner i {
    color: var(--warn);
}

.permission-banner span { flex: 1; }

/* ============================================
   File switcher (header)
   ============================================ */
.file-switcher {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--bg-raised);
    border: 1px solid var(--border-light);
    border-radius: 999px;
    padding: 5px 12px;
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 12.5px;
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
    max-width: 280px;
    margin-left: 6px;
}

.file-switcher:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--text-primary);
}

.file-switcher__icon {
    color: var(--text-tertiary);
    font-size: 12px;
}

.file-switcher__name {
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 180px;
}

.file-switcher__chev {
    color: var(--text-tertiary);
    font-size: 10px;
}

.save-status-pip {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    margin: 0 2px;
}

.save-status-pip.status-saving { background: var(--warn); animation: pipPulse 1.2s ease-in-out infinite; }
.save-status-pip.status-permission-needed { background: var(--warn); }
.save-status-pip.status-error { background: var(--danger); }

@keyframes pipPulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.4; }
}

/* Popover */
.file-switcher-popover {
    position: fixed;
    top: 64px;
    left: 1.75rem;
    z-index: 1100;
    background: var(--surface-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-pop);
    min-width: 320px;
    padding: 8px;
    animation: fadeIn 0.16s var(--ease-out);
}

.file-switcher-popover.hidden { display: none; }

.file-switcher-popover__header {
    padding: 6px 10px 10px;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 8px;
}

.fsp-current-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 13.5px;
}

.fsp-current-status {
    font-size: 11.5px;
    color: var(--text-tertiary);
    margin-top: 2px;
}

.file-switcher-popover__section {
    padding: 4px 0;
    border-bottom: 1px solid var(--border-light);
}

.file-switcher-popover__section:last-child { border-bottom: none; }

.fsp-section-title {
    padding: 4px 10px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-tertiary);
    font-weight: 500;
}

.fsp-list { display: flex; flex-direction: column; gap: 2px; }

.fsp-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    background: transparent;
    border: none;
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    text-align: left;
    width: 100%;
    transition: background var(--transition-fast);
}

.fsp-item:hover { background: var(--bg-hover); }
.fsp-item.is-active { font-weight: 600; }
.fsp-item.is-active::after {
    content: "•";
    color: var(--accent);
    margin-left: auto;
}

.fsp-item > i { color: var(--text-tertiary); font-size: 12px; }

.fsp-action {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    background: transparent;
    border: none;
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    text-align: left;
    width: 100%;
    transition: background var(--transition-fast);
}

.fsp-action:hover { background: var(--bg-hover); }
.fsp-action[data-fsa-disabled="true"] { color: var(--text-tertiary); cursor: not-allowed; }
.fsp-action[data-fsa-disabled="true"]:hover { background: transparent; }
.fsp-action > i { color: var(--text-tertiary); font-size: 12px; width: 14px; }

.fsp-empty-hint {
    padding: 6px 10px;
    color: var(--text-tertiary);
    font-size: 12px;
    font-style: italic;
}

/* ============================================
   Login modal
   ============================================ */
.login-modal {
    min-width: 440px;
    max-width: 500px;
}

.login-modal__sub {
    color: var(--text-secondary);
    font-size: 13.5px;
    margin: -10px 0 18px;
    line-height: 1.55;
}

.login-form .modal-footer-flex {
    border-top: none;
    padding-top: 0.5rem;
    margin-top: 0;
}

/* ============================================
   Versions modal
   ============================================ */
.versions-modal {
    min-width: 560px;
    max-width: 640px;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.versions-modal > h2 { flex-shrink: 0; }

.versions-snapshot {
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 12px;
    background: var(--bg-raised);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    flex-shrink: 0;
}

.versions-snapshot input { flex: 1; }

.versions-list {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding-right: 4px;
    margin-right: -4px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
}

.versions-list::-webkit-scrollbar { width: 6px; }
.versions-list::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 99px; }

.versions-empty {
    padding: 28px 16px;
    color: var(--text-tertiary);
    text-align: center;
    font-size: 13px;
}

.versions-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-light);
    transition: background var(--transition-fast);
}

.versions-row:last-child { border-bottom: none; }
.versions-row:hover { background: var(--bg-hover); }
.versions-row.is-current { background: var(--accent-soft); }

.versions-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    border: 1.5px solid var(--accent);
}

.versions-dot.is-manual { background: var(--accent); }
.versions-dot.is-auto   { background: transparent; }

.versions-row__body { flex: 1; min-width: 0; }

.versions-row__label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 13.5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.versions-row__label em {
    font-style: normal;
    color: var(--accent);
    font-weight: 600;
    font-size: 11.5px;
    margin-left: 4px;
}

.versions-row__date {
    color: var(--text-tertiary);
    font-size: 11.5px;
    margin-top: 2px;
}

.versions-row__restore[disabled] {
    opacity: 0.4;
    cursor: default;
}

/* ============================================
   Users admin modal
   ============================================ */
.users-modal {
    min-width: 720px;
    max-width: 860px;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.users-modal > h2 { flex-shrink: 0; }

.users-add {
    background: var(--bg-raised);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.users-add__title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 10px;
}

.users-add__form {
    display: grid;
    grid-template-columns: 1.2fr 1.6fr 1fr 1.1fr auto;
    gap: 8px;
    align-items: center;
}

.users-add__form input,
.users-add__form select {
    padding: 7px 10px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    font-family: var(--font-body);
    font-size: 13px;
}

.users-list-wrap {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.users-list { width: 100%; border-collapse: collapse; font-size: 13.5px; }

.users-list thead th {
    background: var(--bg-raised);
    font-weight: 500;
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border-default);
    position: sticky;
    top: 0;
    z-index: 1;
}

.users-list tbody td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
}

.users-list tbody tr:last-child td { border-bottom: none; }
.users-list tbody tr.is-self { background: var(--accent-soft); }

.users-list code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 12.5px;
    background: var(--bg-raised);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--border-light);
}

.user-role-badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 11.5px;
    font-weight: 600;
    border-radius: 999px;
}

.user-role-badge--admin {
    background: var(--accent-soft);
    color: var(--accent);
    border: 1px solid var(--accent);
}

.user-role-badge--teacher {
    background: var(--bg-raised);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
}

.user-self-tag {
    color: var(--accent);
    font-size: 11.5px;
    font-weight: 600;
    margin-left: 4px;
}

.user-must-change {
    display: inline-block;
    margin-left: 6px;
    font-size: 11px;
    color: var(--warn);
    font-style: italic;
}

.users-actions {
    white-space: nowrap;
    text-align: right;
}

.users-actions .btn-icon-action {
    margin-left: 4px;
}

.users-actions .btn-icon-action[disabled] {
    opacity: 0.35;
    cursor: not-allowed;
}

.users-loading {
    text-align: center;
    padding: 20px 12px;
    color: var(--text-tertiary);
    font-size: 13px;
    font-style: italic;
}

/* ============================================
   View-only role: teacher gating
   ============================================ */
.role-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-left: 10px;
    padding: 3px 8px;
    background: var(--bg-raised);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
    border-radius: 999px;
    font-size: 11.5px;
    font-weight: 500;
}

.role-badge > i { color: var(--text-tertiary); font-size: 10px; }

/* When the body is in teacher mode, suppress edit affordances. */
body.role-teacher .lesson-delete-btn,
body.role-teacher .lesson-lock-btn,
body.role-teacher .inline-name__pen,
body.role-teacher .palette-container,
body.role-teacher .add-form,
body.role-teacher .btn-icon-edit,
body.role-teacher .btn-icon-trash,
body.role-teacher #fsp-import,
body.role-teacher #fsp-new-remote,
body.role-teacher #fsp-new-file,
body.role-teacher #fsp-new-profile {
    display: none !important;
}

body.role-teacher .lesson-card {
    cursor: default;
}

body.role-teacher .drop-zone {
    cursor: default;
}

body.role-teacher .drop-zone.dz-available,
body.role-teacher .drop-zone.dz-booked {
    background: var(--bg-surface);
    border-color: var(--border-light);
}

/* Decorative accent icon inside H2 */
.accent-icon {
    color: var(--accent);
    margin-right: 8px;
    font-size: 1.05rem;
}

/* Settings table */
.table-container {
    max-height: 320px;
    overflow-y: auto;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
}

.settings-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}

.settings-table th {
    background: var(--bg-raised);
    text-align: left;
    padding: 10px 12px;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 12.5px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 1px solid var(--border-default);
    position: sticky;
    top: 0;
    z-index: 1;
}

.settings-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
}

.settings-table tr:last-child td {
    border-bottom: none;
}

.settings-table .col-total-head { width: 70px; text-align: center; }
.settings-table .col-actions-head { width: 90px; }

/* Add-form: wrap input + error message in a flex column */
.add-form-field {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.add-form-field[data-grow="2"] { flex: 2; }
.add-form-field[data-grow="3"] { flex: 3; }
.add-form-field[data-grow="1"] { flex: 1; }

.add-form-field input,
.add-form-field select {
    width: 100%;
}

/* Modal — edit teacher size; flex column so the subject list scrolls internally
   while the title at top and the Save/Cancel footer stay visible. */
.modal-edit-teacher {
    min-width: 520px;
    max-width: 600px;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-edit-teacher > h2 { flex-shrink: 0; }

.modal-edit-teacher > .modal-section:nth-of-type(2) {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-edit-teacher > .modal-footer-flex { flex-shrink: 0; }

/* Field controls inside modal rows */
.field-select {
    flex: 3;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-default);
    background: var(--bg-surface);
    font-family: var(--font-body);
    font-size: 13.5px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.field-num {
    flex: 1;
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-default);
    background: var(--bg-surface);
    font-family: var(--font-body);
    font-size: 13.5px;
    outline: none;
    text-align: center;
    min-width: 70px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field-num:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Edit-teacher subject list wrapper — scrolls internally when many subjects */
.subj-target-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 10px;
    overflow-y: auto;
    flex: 1 1 auto;
    min-height: 0;
    padding-right: 4px;
    margin-right: -4px;
}

.subj-target-list::-webkit-scrollbar { width: 6px; }
.subj-target-list::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: 99px;
}

/* School-identity form */
.meta-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 560px;
}

.meta-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Notification areas */
.notification-area {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 1200;
    pointer-events: none;
}

.notification-area .toast {
    pointer-events: auto;
}

.notification-area-error {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* Filter chip row */
.filter-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* Search input visually distinct (slim) */
input[type=search].filter-select {
    cursor: text;
    background-clip: padding-box;
}

/* Sidebar backdrop (mobile) */
.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 199;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.sidebar-backdrop.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.app-sidebar__close {
    display: none;
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-default);
    background: var(--bg-raised);
    color: var(--text-secondary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .app-sidebar__close { display: inline-flex; }
    /* Make all tappable buttons meet 44px target */
    .btn-del,
    .btn-icon-action {
        position: relative;
    }
    .btn-del::before,
    .btn-icon-action::before {
        content: "";
        position: absolute;
        inset: -10px;
    }
    /* Palette becomes horizontal scroller */
    .palette-grid {
        flex-wrap: nowrap;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        padding-bottom: 6px;
    }
    .palette-item {
        scroll-snap-align: start;
        flex-shrink: 0;
    }
    /* Conflict drawer becomes bottom sheet */
    .conflict-drawer {
        top: auto;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        max-height: 60vh;
        border-left: none;
        border-top: 1px solid var(--border-default);
        transform: translateY(100%);
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }
    .conflict-drawer.is-open {
        transform: translateY(0);
    }
}