/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    min-height: 44px;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn-primary {
    color: #fff;
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background: var(--color-primary-hover) !important;
    border-color: var(--color-primary-hover) !important;
    color: #fff;
}

.btn-success {
    color: #fff;
    background: var(--color-success);
    border-color: var(--color-success);
}

.btn-secondary {
    color: var(--color-ink);
    background: var(--color-paper);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-subtle);
    border-color: var(--color-border-hover);
}

.btn-outline-primary {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn-outline-secondary {
    border-color: var(--color-border);
    color: var(--color-ink-muted);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: var(--color-bg-subtle);
    color: var(--color-ink);
    border-color: var(--color-border);
}

.btn-outline-success {
    color: var(--color-success);
    border-color: var(--color-success);
    background: transparent;
}

.btn-outline-success:hover {
    background: var(--color-success);
    color: #fff;
}

/* ── Cards ── */
.card-flat {
    background: var(--color-paper);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-4);
}

.card-flat--muted {
    background: var(--color-bg-subtle);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--color-ink);
}

/* ── Forms ── */
.form-stack p { margin-bottom: var(--space-3); }

.form-stack label,
.form-label {
    display: block;
    margin-bottom: var(--space-1);
    font-weight: 500;
    font-size: 0.875rem;
}

.form-stack ul.errorlist,
.form-stack .errorlist {
    list-style: none;
    margin: var(--space-1) 0 0;
    padding: 0;
    color: var(--color-danger);
    font-weight: 500;
    font-size: 0.8125rem;
}

.form-stack .helptext {
    display: block;
    margin-top: var(--space-1);
    color: var(--color-ink-muted);
    font-size: 0.8125rem;
}

.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    font-size: 0.9375rem;
    padding: 0.5rem 0.75rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(13, 148, 136, 0.15);
    outline: none;
}

/* ── Tables ── */
.table-clean { margin-bottom: 0; }

.table-clean thead th {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-ink-muted);
    font-weight: 600;
    border-bottom-width: 2px;
}

.table-clean tbody td {
    border-color: var(--color-border);
    vertical-align: middle;
    font-size: 0.9375rem;
}

.table-clean tbody tr:nth-child(even) {
    background: var(--color-bg-subtle);
}

.table-responsive {
    -webkit-overflow-scrolling: touch;
}

.table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--color-ink-muted);
}

.table tbody tr:hover {
    background: var(--color-bg-subtle);
}

/* ── Status badges ── */
.status-badge {
    display: inline-block;
    border-radius: var(--radius-full);
    padding: 0.2rem 0.6rem;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.status-ok,
.status-paid,
.status-approved,
.status-true,
.status-published,
.status-pass {
    color: var(--color-success);
    background: var(--color-success-bg);
}

.status-warn,
.status-pending {
    color: var(--color-warning);
    background: var(--color-warning-bg);
}

.status-danger,
.status-failed,
.status-rejected,
.status-false,
.status-fail {
    color: var(--color-danger);
    background: var(--color-danger-bg);
}

/* ── Alerts ── */
.alert {
    border-radius: var(--radius-md);
}

.alert-success {
    color: var(--color-success);
    background: var(--color-success-bg);
}

.alert-warning {
    color: var(--color-warning);
    background: var(--color-warning-bg);
}

.alert-danger {
    color: var(--color-danger);
    background: var(--color-danger-bg);
}

.alert-info {
    color: var(--color-ink);
    background: var(--color-secondary-subtle);
    border-color: var(--color-border);
}

/* ── Stat grid ── */
.stat-grid {
    display: grid;
    gap: var(--space-3);
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.stat-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    background: var(--color-paper);
}

.stat-label {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-ink-muted);
    text-transform: uppercase;
}

.stat-value {
    margin-top: var(--space-1);
    font-size: 1.25rem;
    font-weight: 600;
}

/* ── Metric cards (admin) ── */
.metric-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    background: var(--color-paper);
}

.metric-label {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--color-ink-muted);
}

.metric-value {
    margin-top: var(--space-1);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* ── Data list ── */
.data-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.data-list li {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9375rem;
}

.data-list li:last-child { border-bottom: 0; }

.data-list strong {
    flex: 0 0 140px;
    color: var(--color-ink-muted);
    font-weight: 500;
    font-size: 0.875rem;
}

.data-list span,
.data-list code {
    word-break: break-word;
}

@media (max-width: 767px) {
    .data-list li {
        flex-direction: column;
        gap: 0.1rem;
    }
    .data-list strong {
        flex: none;
    }
}

/* ── Choice grid (exam MCQ) ── */
.choice-grid { display: grid; gap: var(--space-2); }

.choice-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--space-2) var(--space-3);
}

.choice-item .form-check { margin: 0; }
.choice-item input:checked + label { font-weight: 600; }

.choice-item:has(input:checked) {
    background: var(--color-primary-subtle);
    border-color: var(--color-primary);
}

/* ── Quick links (admin) ── */
.quick-link {
    display: block;
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
}

.quick-link:hover {
    background: var(--color-bg-subtle);
    text-decoration: none;
    color: inherit;
}

.quick-link strong { display: block; font-size: 0.9375rem; }
.quick-link span { color: var(--color-ink-muted); font-size: 0.8125rem; }

/* ── Timer ── */
.timer-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-2);
}

.timer-display {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-ink);
}

.timer-track {
    height: 4px;
    border-radius: 2px;
    background: var(--color-border);
    overflow: hidden;
    flex: 1;
    min-width: 100px;
}

.timer-bar {
    height: 100%;
    width: 100%;
    background: var(--color-primary);
    transition: width 0.5s linear;
}

.timer-bar.timer-warn {
    background: var(--color-danger);
}

/* ── Section titles ── */
.section-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.section-subtitle {
    margin: 0.15rem 0 0;
    color: var(--color-ink-muted);
    font-size: 0.8125rem;
}

/* ── Mobile UX ── */
@media (max-width: 767px) {
    .btn {
        min-height: 46px;
    }

    .btn-sm {
        min-height: 38px;
        padding: 0.35rem 0.65rem;
        font-size: 0.75rem;
    }

    .card-flat {
        padding: var(--space-3);
    }

    .form-control,
    .form-select {
        min-height: 44px;
        font-size: 0.9375rem;
    }

    .form-stack textarea.form-control {
        min-height: 88px;
    }

    .public-form-actions {
        flex-direction: column;
        align-items: stretch !important;
        gap: var(--space-2) !important;
    }

    .public-form-actions .btn {
        width: 100%;
    }

    .exam-timer-card {
        min-width: 0 !important;
        width: 100%;
    }

    .exam-question-card {
        padding: var(--space-3) !important;
    }

    .exam-option-label {
        white-space: normal;
        line-height: 1.35;
        align-items: flex-start !important;
    }

    .exam-submit-bar {
        position: sticky;
        bottom: 0.75rem;
        padding: var(--space-3) !important;
        border-width: 1px !important;
    }

    .exam-submit-bar .btn {
        width: 100%;
    }

    .table-mobile thead {
        display: none;
    }

    .table-mobile,
    .table-mobile tbody,
    .table-mobile tr {
        display: block;
        width: 100%;
    }

    .table-mobile tr {
        border: 1px solid var(--color-border);
        border-radius: var(--radius-sm);
        margin-bottom: var(--space-3);
        padding: var(--space-2);
        background: var(--color-paper);
    }

    .table-mobile tr:nth-child(even) {
        background: var(--color-paper) !important;
    }

    .table-mobile td {
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
        gap: var(--space-3);
        border: 0 !important;
        padding: 0.45rem 0.25rem !important;
        font-size: 0.875rem;
        word-break: break-word;
    }

    .table-mobile td[data-label]::before {
        content: attr(data-label);
        flex: 0 0 40%;
        max-width: 40%;
        color: var(--color-ink-muted);
        font-size: 0.6875rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        line-height: 1.35;
    }

    .table-mobile td[colspan] {
        display: block;
        text-align: center;
        padding: 0.85rem 0.5rem !important;
    }

    .table-mobile td[colspan]::before {
        content: none;
    }
}
