/* ═══════════════════════════════════════════════════
 *  components.css — acad_INFO UI v4.3
 *  ═══════════════════════════════════════════════════ */

/* ── School switcher ──────────────────────────────── */

.switcher-wrap {
    margin-bottom: var(--s4);
}

.switcher {
    position: relative;
    display: inline-flex;
    align-items: center;
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-s);
    padding: 3px;
    gap: 0;
}

.switcher-bg {
    position: absolute;
    top: 3px;
    left: 3px;
    height: calc(100% - 6px);
    background: var(--bg-surface-3);
    border-radius: 4px;
    transition: transform 0.35s var(--ease), width 0.35s var(--ease);
    pointer-events: none;
    z-index: 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.switcher-btn {
    position: relative;
    z-index: 1;
    padding: 7px 18px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    color: var(--text-3);
    background: none;
    border: none;
    border-radius: 4px;
    transition: color 0.25s var(--ease);
    white-space: nowrap;
}

.switcher-btn:hover { color: var(--text-2); }
.switcher-btn.active { color: var(--text-1); }

/* ── Stat cards ───────────────────────────────────── */

.stat-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1px;
    background: var(--border);
    border-radius: var(--radius-m);
    overflow: hidden;
    margin-bottom: var(--s5);
}

.stat-card {
    background: var(--bg-surface-1);
    padding: var(--s4);
    transition: background var(--dur) var(--ease);
}

.stat-card:hover { background: var(--bg-surface-2); }

.stat-val {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-1);
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-3);
}

/* ── Grids ────────────────────────────────────────── */

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--s3);
    margin-bottom: var(--s3);
    align-items: stretch;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--s3);
    margin-bottom: var(--s3);
    align-items: start;
}

@media (max-width: 900px) {
    .grid-2 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr; }
}

/* ── Card ─────────────────────────────────────────── */

.card {
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    padding: var(--s4);
    margin-bottom: var(--s3);
    display: flex;
    flex-direction: column;
}

.card:last-child { margin-bottom: 0; }

.card-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-2);
    margin-bottom: var(--s3);
    letter-spacing: -0.01em;
}

.card-subtitle {
    font-size: 0.6875rem;
    color: var(--text-4);
    font-family: var(--font-mono);
    font-weight: 400;
    margin-left: 8px;
    letter-spacing: 0;
    text-transform: none;
}

.card-header-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: var(--s3);
}

.card-body-grow {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* ── Bar chart ────────────────────────────────────── */

.bar-rows {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
    justify-content: center;
}

.bar-row {
    display: grid;
    grid-template-columns: 64px 1fr 48px;
    align-items: center;
    gap: 12px;
}

.bar-label {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-3);
    text-align: right;
}

.bar-track {
    height: 10px;
    background: var(--bg-surface-3);
    border-radius: 5px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 5px;
    transition: width 0.8s var(--ease);
    min-width: 3px;
}

.bar-value {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-2);
    text-align: right;
}

/* ── Metric list ──────────────────────────────────── */

.metric-list {
    display: flex;
    flex-direction: column;
    flex: 1;
    justify-content: center;
}

.metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

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

.metric-label {
    font-size: 0.8125rem;
    color: var(--text-2);
}

.metric-val {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-1);
    font-variant-numeric: tabular-nums;
}

/* ── Badge grid ───────────────────────────────────── */

.badge-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-2);
    background: var(--bg-surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-s);
    transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.badge:hover {
    border-color: var(--border-hover);
    background: var(--bg-surface-3);
}

.badge-count {
    font-size: 0.6875rem;
    color: var(--text-3);
}

/* ── Tables ───────────────────────────────────────── */

.table-wrap { overflow-x: auto; max-width: 100%; }

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    font-size: 0.6875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-4);
    text-align: left;
    padding: 0 12px 10px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tbody td {
    padding: 10px 12px;
    font-size: 0.8125rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

tbody tr:last-child td { border-bottom: none; }

tbody tr {
    transition: background var(--dur-fast) var(--ease);
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.015);
}

.text-r { text-align: right; }

.name-primary {
    color: var(--text-1);
    font-weight: 500;
}

.rank {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    font-size: 0.6875rem;
    font-family: var(--font-mono);
    color: var(--text-3);
    border-radius: 4px;
}

.rank-1 { background: rgba(245, 158, 11, 0.12); color: #F59E0B; }
.rank-2 { background: rgba(156, 163, 175, 0.12); color: #9CA3AF; }
.rank-3 { background: rgba(180, 83, 9, 0.12); color: #D97706; }

.gems-val {
    font-family: var(--font-mono);
    color: var(--accent);
    font-weight: 500;
}

.coins-val {
    font-family: var(--font-mono);
    color: var(--caution);
}

.score-val {
    font-family: var(--font-mono);
    color: var(--text-1);
    font-weight: 600;
}

.sub-val {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-4);
}

/* ── Sortable headers ─────────────────────────────── */

th.sortable {
    cursor: none;
    user-select: none;
    transition: color var(--dur-fast) var(--ease);
}

th.sortable:hover { color: var(--text-2); }

th.sortable::after {
    content: '';
    display: inline-block;
    width: 0; height: 0;
    margin-left: 6px;
    vertical-align: middle;
    border-left: 3px solid transparent;
    border-right: 3px solid transparent;
    border-top: 4px solid var(--text-4);
    opacity: 0;
    transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

th.sortable:hover::after { opacity: 0.5; }
th.sortable.sort-asc::after,
th.sortable.sort-desc::after { opacity: 1; border-top-color: var(--accent); }
th.sortable.sort-desc::after { transform: rotate(180deg); }

/* ── Filter bar ───────────────────────────────────── */

.filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: var(--s4);
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 10px 14px 10px 38px;
    font-size: 0.8125rem;
    font-family: var(--font-sans);
    color: var(--text-1);
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-s);
    transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.search-input::placeholder { color: var(--text-4); }

.search-input:focus {
    border-color: var(--accent-dim);
    box-shadow: 0 0 0 3px var(--accent-glow);
    outline: none;
}

.search-wrap {
    position: relative;
    flex: 1;
    min-width: 200px;
}

.search-icon {
    position: absolute;
    left: 13px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-4);
    pointer-events: none;
    font-size: 0.8125rem;
}

.filter-select {
    padding: 10px 32px 10px 12px;
    font-size: 0.75rem;
    font-family: var(--font-sans);
    color: var(--text-2);
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-s);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%234A4A55' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: border-color var(--dur-fast) var(--ease);
}

.filter-select:focus {
    border-color: var(--accent-dim);
    outline: none;
}

.filter-btn {
    padding: 10px 16px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--text-2);
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-s);
    transition: all var(--dur-fast) var(--ease);
    white-space: nowrap;
}

.filter-btn:hover {
    border-color: var(--border-hover);
    background: var(--bg-surface-2);
    color: var(--text-1);
}

/* ── Detail tags ──────────────────────────────────── */

.detail-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    font-size: 0.6875rem;
    font-family: var(--font-mono);
    color: var(--text-3);
    background: var(--bg-surface-2);
    border-radius: 3px;
}

.detail-tag.no-data { color: var(--text-4); }
.detail-tag.has-data { color: var(--positive); background: rgba(16, 185, 129, 0.08); }

/* ── Pagination ───────────────────────────────────── */

.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--s3) 0;
    margin-top: var(--s3);
    border-top: 1px solid var(--border);
}

.pagination-info {
    font-size: 0.75rem;
    color: var(--text-3);
    font-family: var(--font-mono);
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 4px;
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-3);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    transition: all var(--dur-fast) var(--ease);
}

.pagination-btn:hover:not(:disabled) {
    background: var(--bg-surface-2);
    border-color: var(--border);
    color: var(--text-1);
}

.pagination-btn.active {
    background: var(--accent-dim);
    border-color: rgba(99, 102, 241, 0.2);
    color: var(--accent);
}

.pagination-btn:disabled { opacity: 0.3; pointer-events: none; }

.pagination-ellipsis {
    font-size: 0.75rem;
    color: var(--text-4);
    padding: 0 4px;
}

/* ── Results info ─────────────────────────────────── */

.results-info {
    font-size: 0.75rem;
    color: var(--text-3);
    margin-bottom: var(--s3);
    display: flex;
    align-items: center;
    gap: 8px;
}

.results-count {
    font-family: var(--font-mono);
    color: var(--text-2);
}

/* ── Empty state ──────────────────────────────────── */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--s7) var(--s4);
    text-align: center;
}

.empty-state-icon { font-size: 2rem; margin-bottom: var(--s3); opacity: 0.3; }

.empty-state h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-2);
    margin-bottom: var(--s2);
}

.empty-state p { font-size: 0.8125rem; color: var(--text-3); }

/* ── Student inline ───────────────────────────────── */

.student-username {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-3);
}

.student-section {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-3);
}

/* ── Teacher card ─────────────────────────────────── */

.teacher-card {
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    padding: var(--s4);
    transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.teacher-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-surface-2);
}

.teacher-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--s3);
    gap: 12px;
}

.teacher-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-1);
}

.teacher-email {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-3);
    margin-top: 2px;
    word-break: break-all;
}

.teacher-status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    font-size: 0.6875rem;
    font-weight: 500;
    border-radius: 4px;
    letter-spacing: 0.04em;
    white-space: nowrap;
    flex-shrink: 0;
}

.teacher-status.cracked { color: var(--positive); background: rgba(16, 185, 129, 0.08); }
.teacher-status.locked { color: var(--text-4); background: var(--bg-surface-2); }

.teacher-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.8125rem;
    gap: 12px;
}

.teacher-detail-row:last-child { border-bottom: none; }
.teacher-detail-label { color: var(--text-3); white-space: nowrap; }

.teacher-detail-val {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-2);
    text-align: right;
    word-break: break-all;
}

.teacher-classes {
    margin-top: var(--s3);
    padding-top: var(--s3);
    border-top: 1px solid var(--border);
}

.teacher-classes-title {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-4);
    margin-bottom: var(--s2);
}

.teacher-class-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.teacher-class-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    font-size: 0.6875rem;
    font-family: var(--font-mono);
    color: var(--text-2);
    background: var(--bg-surface-3);
    border-radius: 4px;
}

.teacher-class-badge .student-ct {
    color: var(--text-4);
    font-size: 0.625rem;
}

/* ── Censored / Reveal ────────────────────────────── */

.censored-val {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-4);
    letter-spacing: 0.08em;
}

.reveal-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--s4);
    padding: 12px 16px;
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-s);
}

.reveal-bar-text { font-size: 0.75rem; color: var(--text-3); }

.reveal-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-3);
    background: var(--bg-surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-s);
    transition: all var(--dur-fast) var(--ease);
}

.reveal-btn:hover { border-color: var(--border-hover); color: var(--text-1); }

.reveal-btn.unlocked {
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--positive);
    background: rgba(16, 185, 129, 0.06);
}

/* ── PIN Modal ────────────────────────────────────── */

.pin-overlay {
    position: fixed;
    inset: 0;
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(5, 5, 7, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    animation: fadeIn 0.25s var(--ease);
}

.pin-modal {
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-l);
    padding: 40px;
    width: 360px;
    text-align: center;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
}

.pin-modal .micro { margin-bottom: var(--s3); display: block; }
.pin-modal h3 { font-size: 1.125rem; margin-bottom: 4px; }
.pin-modal p { font-size: 0.75rem; color: var(--text-3); margin-bottom: var(--s4); line-height: 1.5; }

.pin-input {
    width: 100%;
    padding: 14px;
    font-size: 1.5rem;
    font-family: var(--font-mono);
    letter-spacing: 0.5em;
    text-align: center;
    color: var(--text-1);
    background: var(--bg-surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-s);
    transition: border-color var(--dur-fast) var(--ease);
}

.pin-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.pin-input.pin-error-state {
    border-color: var(--negative);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.pin-error {
    font-size: 0.75rem;
    color: var(--negative);
    margin-top: 12px;
    min-height: 1.2em;
}

.pin-cancel {
    font-size: 0.75rem;
    color: var(--text-4);
    margin-top: var(--s3);
    display: inline-block;
    transition: color var(--dur-fast) var(--ease);
}

.pin-cancel:hover { color: var(--text-2); }

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

.pin-shake { animation: shake 0.4s ease-in-out; }

/* ── Class section cards ──────────────────────────── */

.class-section-card {
    background: var(--bg-surface-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    padding: var(--s4);
    transition: border-color var(--dur-fast) var(--ease);
}

.class-section-card:hover { border-color: var(--border-hover); }

.class-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--s3);
}

.class-section-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-1);
    font-family: var(--font-mono);
}

.class-section-count {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-3);
}

.class-section-stats {
    display: flex;
    gap: var(--s3);
    flex-wrap: wrap;
}

.class-mini-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.class-mini-stat-val {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-1);
    font-variant-numeric: tabular-nums;
}

.class-mini-stat-label {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-4);
}

/* ── Fade-in ──────────────────────────────────────── */

.fade-enter { animation: fadeIn 0.35s var(--ease) both; }

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

/* ── Responsive ───────────────────────────────────── */

@media (max-width: 768px) {
    .filter-bar { flex-direction: column; align-items: stretch; }
    .search-wrap { min-width: 100%; }
    .filter-select { width: 100%; }
    .pagination { flex-direction: column; gap: var(--s2); }
    .stat-row { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: 1fr; }
    .teacher-header { flex-direction: column; }
    .reveal-bar { flex-direction: column; gap: 10px; text-align: center; }
    .pin-modal { width: 90vw; padding: 28px; }
}