/* ═══════════════════════════════════════════════════════════
   VedaSchoolPro Component Library
   Reusable UX primitives for consistent, modern UI
   ═══════════════════════════════════════════════════════════ */

/* ── Spacing Tokens ── */
:root {
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
}

/* ══════════════════════════════════════
   PageHeader
   ══════════════════════════════════════ */
.vsp-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}
.vsp-page-header-left { flex: 1; min-width: 200px; }
.vsp-page-header h2 {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text);
    margin: 0 0 var(--space-1) 0;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}
.vsp-page-header p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin: 0;
}
.vsp-page-header-actions {
    display: flex;
    gap: var(--space-2);
    flex-shrink: 0;
}

/* ══════════════════════════════════════
   KPI Strip
   ══════════════════════════════════════ */
.vsp-kpi-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}
.vsp-kpi {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
}
.vsp-kpi-value {
    font-size: 1.4rem;
    font-weight: 900;
    font-variant-numeric: tabular-nums;
    color: var(--text);
    line-height: 1;
}
.vsp-kpi-label {
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
    margin-top: var(--space-1);
}
.vsp-kpi-delta {
    font-size: 0.58rem;
    font-weight: 600;
    margin-top: var(--space-1);
}
.vsp-kpi-delta.up { color: var(--success); }
.vsp-kpi-delta.down { color: var(--danger); }

/* ══════════════════════════════════════
   StatusBadge
   ══════════════════════════════════════ */
.vsp-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
}
.vsp-badge-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    flex-shrink: 0;
}
.vsp-badge-success, .vsp-badge-paid, .vsp-badge-active, .vsp-badge-present {
    background: var(--success-light); color: #059669;
}
.vsp-badge-success .vsp-badge-dot { background: #059669; }
.vsp-badge-warning, .vsp-badge-partial, .vsp-badge-pending, .vsp-badge-grace {
    background: var(--warning-light); color: #D97706;
}
.vsp-badge-warning .vsp-badge-dot { background: #D97706; }
.vsp-badge-danger, .vsp-badge-overdue, .vsp-badge-absent, .vsp-badge-expired, .vsp-badge-failed {
    background: var(--danger-light); color: #DC2626;
}
.vsp-badge-danger .vsp-badge-dot { background: #DC2626; }
.vsp-badge-info {
    background: var(--info-light); color: #2563EB;
}
.vsp-badge-info .vsp-badge-dot { background: #2563EB; }
.vsp-badge-muted, .vsp-badge-inactive, .vsp-badge-waived {
    background: #E5E7EB; color: #6B7280;
}
.vsp-badge-muted .vsp-badge-dot { background: #6B7280; }

/* ══════════════════════════════════════
   FilterBar
   ══════════════════════════════════════ */
.vsp-filter-bar {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}
.vsp-filter-search {
    flex: 1;
    min-width: 180px;
    position: relative;
}
.vsp-filter-search input {
    width: 100%;
    padding: 8px 12px 8px 34px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
    transition: border-color 0.2s;
    box-sizing: border-box;
}
.vsp-filter-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-50);
}
.vsp-filter-search i {
    position: absolute;
    left: 11px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.72rem;
    color: var(--text-light);
    pointer-events: none;
}
.vsp-filter-select {
    padding: 8px 28px 8px 10px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' stroke='%2394A3B8' fill='none' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
}
.vsp-filter-select:focus {
    outline: none;
    border-color: var(--primary);
}

/* ══════════════════════════════════════
   DataTable
   ══════════════════════════════════════ */
.vsp-table-wrap {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.vsp-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}
.vsp-table thead th {
    padding: 10px 14px;
    text-align: left;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
    background: var(--bg);
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 2;
    white-space: nowrap;
}
.vsp-table tbody td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
}
.vsp-table tbody tr:hover {
    background: var(--primary-50);
}
.vsp-table tbody tr:last-child td {
    border-bottom: none;
}
.vsp-table .col-actions {
    text-align: right;
    white-space: nowrap;
}
.vsp-table .col-amount {
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-weight: 600;
}
.vsp-table .col-name {
    font-weight: 700;
    color: var(--text);
}

/* Table pagination */
.vsp-table-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    font-size: 0.72rem;
    color: var(--text-light);
    border-top: 1px solid var(--border-light);
}
.vsp-table-footer-info { font-weight: 600; }
.vsp-table-pagination {
    display: flex;
    gap: var(--space-1);
}
.vsp-table-pagination button {
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: 0.15s;
}
.vsp-table-pagination button:hover { background: var(--bg); }
.vsp-table-pagination button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}
.vsp-table-pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ══════════════════════════════════════
   EmptyState
   ══════════════════════════════════════ */
.vsp-empty {
    text-align: center;
    padding: var(--space-10) var(--space-6);
    color: var(--text-light);
}
.vsp-empty-icon {
    font-size: 2.5rem;
    opacity: 0.2;
    margin-bottom: var(--space-3);
}
.vsp-empty h3 {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin: 0 0 var(--space-2) 0;
}
.vsp-empty p {
    font-size: 0.78rem;
    margin: 0 0 var(--space-4) 0;
    max-width: 320px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}
.vsp-empty-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius);
    font-size: 0.78rem;
    font-weight: 700;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

/* ══════════════════════════════════════
   LoadingState
   ══════════════════════════════════════ */
.vsp-loading {
    text-align: center;
    padding: var(--space-8);
    color: var(--text-light);
    font-size: 0.82rem;
}
.vsp-loading i { margin-right: 6px; }

.vsp-skeleton {
    background: linear-gradient(90deg, var(--border-light) 25%, var(--bg) 50%, var(--border-light) 75%);
    background-size: 200% 100%;
    animation: vsp-shimmer 1.5s infinite;
    border-radius: 4px;
}
@keyframes vsp-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ══════════════════════════════════════
   ErrorState
   ══════════════════════════════════════ */
.vsp-error {
    text-align: center;
    padding: var(--space-8);
    color: var(--danger);
}
.vsp-error-icon { font-size: 1.5rem; margin-bottom: var(--space-2); }
.vsp-error h3 {
    font-size: 0.88rem;
    font-weight: 700;
    margin: 0 0 var(--space-2) 0;
}
.vsp-error p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin: 0 0 var(--space-3) 0;
}

/* ══════════════════════════════════════
   SearchableSelect
   ══════════════════════════════════════ */
.vsp-searchable {
    position: relative;
    display: inline-block;
    min-width: 160px;
}
.vsp-searchable-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text);
    font-size: 0.82rem;
    font-family: inherit;
    cursor: pointer;
    gap: 8px;
    transition: border-color 0.2s;
    width: 100%;
    box-sizing: border-box;
}
.vsp-searchable-trigger:focus,
.vsp-searchable.open .vsp-searchable-trigger {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-50);
    outline: none;
}
.vsp-searchable-trigger .placeholder { color: var(--text-light); }
.vsp-searchable-trigger .chevron {
    font-size: 0.55rem;
    color: var(--text-light);
    transition: transform 0.2s;
}
.vsp-searchable.open .chevron { transform: rotate(180deg); }
.vsp-searchable-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--bg-card);
    border: 1.5px solid var(--primary-100);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    margin-top: 4px;
    display: none;
    max-height: 260px;
    overflow: hidden;
    flex-direction: column;
}
.vsp-searchable.open .vsp-searchable-dropdown { display: flex; }
.vsp-searchable-search {
    padding: 8px;
    border-bottom: 1px solid var(--border-light);
}
.vsp-searchable-search input {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.78rem;
    font-family: inherit;
    background: var(--bg);
    box-sizing: border-box;
}
.vsp-searchable-search input:focus {
    outline: none;
    border-color: var(--primary);
}
.vsp-searchable-options {
    overflow-y: auto;
    max-height: 200px;
    padding: 4px;
}
.vsp-searchable-option {
    padding: 7px 10px;
    border-radius: 4px;
    font-size: 0.78rem;
    cursor: pointer;
    transition: background 0.1s;
}
.vsp-searchable-option:hover,
.vsp-searchable-option.highlighted {
    background: var(--primary-50);
}
.vsp-searchable-option.selected {
    background: var(--primary-50);
    font-weight: 700;
    color: var(--primary);
}
.vsp-searchable-option .sub {
    font-size: 0.65rem;
    color: var(--text-light);
    margin-top: 1px;
}
.vsp-searchable-empty {
    padding: 16px;
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-light);
}

/* ══════════════════════════════════════
   Row Action Button
   ══════════════════════════════════════ */
.vsp-row-btn {
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.68rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.vsp-row-btn-primary {
    background: var(--primary);
    color: white;
}
.vsp-row-btn-primary:hover {
    background: var(--primary-dark);
}
.vsp-row-btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 4px 6px;
}
.vsp-row-btn-ghost:hover {
    background: var(--bg);
    color: var(--text);
}

/* ══════════════════════════════════════
   Responsive
   ══════════════════════════════════════ */
@media (max-width: 640px) {
    .vsp-page-header { flex-direction: column; }
    .vsp-kpi-strip { grid-template-columns: 1fr 1fr; }
    .vsp-filter-bar { flex-direction: column; }
    .vsp-filter-search { min-width: 100%; }
}