/* ============================================================
   SAMS Agent Panel
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&display=swap');

/* ── CSS Variables (Light Theme Default) ──────────────────── */
:root {
    --sap-sidebar-bg:       #1e1b4b;
    --sap-sidebar-text:     rgba(255,255,255,0.65);
    --sap-sidebar-active:   #7c3aed;
    --sap-sidebar-hover:    rgba(255,255,255,0.08);
    --sap-sidebar-border:   rgba(255,255,255,0.1);
    --sap-brand-avatar-bg:  #7c3aed;
    --sap-main-bg:          #f8f9fb;
    --sap-card-bg:          #ffffff;
    --sap-card-border:      #e5e7eb;
    --sap-text-primary:     #111827;
    --sap-text-secondary:   #6b7280;
    --sap-text-body:        #374151;
    --sap-input-border:     #e5e7eb;
    --sap-input-bg:         #ffffff;
    --sap-table-head-bg:    #f8f9fb;
    --sap-table-row-hover:  #f9fafb;
    --sap-table-border:     #f3f4f6;
    --sap-accent:           #7c3aed;
    --sap-accent-hover:     #6d28d9;
    --sap-header-bg:        #ffffff;
    --sap-header-border:    #e5e7eb;
    --sap-footer-border:    rgba(255,255,255,0.1);
}

/* ── Dark Theme ───────────────────────────────────────────── */
.sams-agent-panel.sap-dark {
    --sap-sidebar-bg:       #0f0c29;
    --sap-sidebar-text:     rgba(255,255,255,0.6);
    --sap-sidebar-active:   #7c3aed;
    --sap-sidebar-hover:    rgba(255,255,255,0.07);
    --sap-sidebar-border:   rgba(255,255,255,0.08);
    --sap-brand-avatar-bg:  #7c3aed;
    --sap-main-bg:          #18181b;
    --sap-card-bg:          #1f1f23;
    --sap-card-border:      #2d2d35;
    --sap-text-primary:     #f3f4f6;
    --sap-text-secondary:   #9ca3af;
    --sap-text-body:        #d1d5db;
    --sap-input-border:     #3f3f46;
    --sap-input-bg:         #27272a;
    --sap-table-head-bg:    #27272a;
    --sap-table-row-hover:  #27272a;
    --sap-table-border:     #2d2d35;
    --sap-accent:           #8b5cf6;
    --sap-accent-hover:     #7c3aed;
    --sap-header-bg:        #1f1f23;
    --sap-header-border:    #2d2d35;
    --sap-footer-border:    rgba(255,255,255,0.08);
}

/* ── Panel Wrapper ─────────────────────────────────────────── */
.sams-agent-panel {
    display: flex;
    font-family: 'DM Sans', sans-serif;
    background: var(--sap-main-bg);

    overflow: hidden;
    box-shadow: 0 2px 24px rgba(0,0,0,.07);
    margin: 0;
    padding: 0;
    max-width: 100%;
    position: relative;
    /* Fixed height so sidebar stays fixed */
    height: 100vh;
    min-height: 600px;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sap-sidebar {
    width: 240px;
    flex-shrink: 0;
    background: var(--sap-sidebar-bg);
    color: #fff;
    display: flex;
    flex-direction: column;
    padding: 24px 0 0;
    /* FIXED sidebar — no scroll */
    position: sticky;
    top: 0;
    height: 100%;
    overflow: hidden; /* no scroll at all */
}

.sap-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--sap-sidebar-border);
    margin-bottom: 12px;
    flex-shrink: 0;
}

.sap-brand-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--sap-brand-avatar-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    flex-shrink: 0;
    overflow: hidden;
}

.sap-brand-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.sap-brand-name {
    font-weight: 700;
    font-size: 13px;
    line-height: 1.3;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}

.sap-brand-role {
    font-size: 11px;
    color: var(--sap-sidebar-text);
}

/* Nav scrollable internally if needed but no visible scrollbar */
.sap-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0 10px;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
}

.sap-nav::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.sap-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--sap-sidebar-text);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all .15s;
    text-decoration: none;
    position: relative;
    flex-shrink: 0;
}

.sap-nav-item:hover {
    background: var(--sap-sidebar-hover);
    color: #fff;
    text-decoration: none;
}

.sap-nav-item.active {
    background: var(--sap-sidebar-active);
    color: #fff;
    font-weight: 600;
}

/* Home button special style */
.sap-home-btn {
    color: rgba(255,255,255,0.75);
    border: 1px solid rgba(255,255,255,0.15);
    margin-bottom: 6px;
}

.sap-home-btn:hover {
    background: rgba(255,255,255,0.12);
    color: #fff;
    border-color: rgba(255,255,255,0.25);
}

.sap-nav-count {
    margin-left: auto;
    background: rgba(255,255,255,.2);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 20px;
}

.sap-nav-item.active .sap-nav-count {
    background: rgba(255,255,255,.3);
}

/* ── Sidebar Footer ────────────────────────────────────────── */
.sap-sidebar-footer {
    flex-shrink: 0;
    padding: 12px 10px;
    border-top: 1px solid var(--sap-footer-border);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ── Theme Toggle Button ───────────────────────────────────── */
.sap-theme-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 9px 14px;
    background: none;
    border: none;
    border-radius: 8px;
    color: var(--sap-sidebar-text);
    font-size: 14px;
    font-weight: 500;
    font-family: 'DM Sans', sans-serif;
    cursor: pointer;
    transition: all .15s;
    text-align: left;
}

.sap-theme-btn:hover {
    background: rgba(255,255,255,.08);
    color: #fff;
}

.sap-logout-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 9px 14px;
    background: none;
    border: none;
    border-radius: 8px;
    color: var(--sap-sidebar-text);
    font-size: 14px;
    font-weight: 500;
    font-family: 'DM Sans', sans-serif;
    cursor: pointer;
    transition: all .15s;
    text-align: left;
}

.sap-logout-btn:hover {
    background: rgba(239,68,68,.15);
    color: #fca5a5;
}

/* ── Main ─────────────────────────────────────────────────── */
.sap-main {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: var(--sap-main-bg);
}

.sap-tab {
    display: none;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

.sap-tab.active {
    display: flex;
}

.sap-tab-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 24px 28px 18px;
    border-bottom: 1px solid var(--sap-header-border);
    background: var(--sap-header-bg);
    flex-shrink: 0;
}

.sap-tab-header h2 {
    margin: 0 0 4px;
    font-size: 20px;
    font-weight: 700;
    color: var(--sap-text-primary);
}

.sap-tab-header p {
    margin: 0;
    font-size: 13px;
    color: var(--sap-text-secondary);
}

/* ── Filters ──────────────────────────────────────────────── */
.sap-filters {
    display: flex;
    gap: 12px;
    padding: 14px 28px;
    background: var(--sap-header-bg);
    border-bottom: 1px solid var(--sap-header-border);
    flex-shrink: 0;
}

/* ── Table wrap ───────────────────────────────────────────── */
.sap-table-wrap {
    flex: 1;
    overflow-y: auto;
    padding: 20px 28px;
    background: var(--sap-main-bg);
}

.sap-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    background: var(--sap-card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.sap-table th {
    background: var(--sap-table-head-bg);
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--sap-text-secondary);
    border-bottom: 1px solid var(--sap-card-border);
}

.sap-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--sap-table-border);
    color: var(--sap-text-body);
    vertical-align: middle;
}

.sap-table tr:last-child td { border-bottom: none; }
.sap-table tr:hover td { background: var(--sap-table-row-hover); }

.sap-table code {
    background: var(--sap-table-head-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-family: monospace;
    color: var(--sap-text-body);
}

/* ── Buttons ──────────────────────────────────────────────── */
.sap-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all .15s;
    text-decoration: none;
    font-family: 'DM Sans', sans-serif;
}

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

.sap-btn-primary:hover {
    background: var(--sap-accent-hover);
    border-color: var(--sap-accent-hover);
}

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

.sap-btn-outline:hover { background: #f3f0ff; }

.sap-btn-sm { padding: 6px 12px; font-size: 12px; }

.sap-btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 16px;
    transition: background .15s;
    color: var(--sap-text-secondary);
}

.sap-btn-icon:hover { background: var(--sap-table-head-bg); }

/* ── Form elements ────────────────────────────────────────── */
.sap-input,
.sap-select {
    padding: 9px 12px;
    border: 1.5px solid var(--sap-input-border);
    border-radius: 8px;
    font-size: 14px;
    font-family: 'DM Sans', sans-serif;
    color: var(--sap-text-body);
    background: var(--sap-input-bg);
    width: 100%;
    box-sizing: border-box;
    transition: border-color .15s;
}

.sap-input:focus, .sap-select:focus {
    outline: none;
    border-color: var(--sap-accent);
    box-shadow: 0 0 0 3px rgba(124,58,237,.1);
}

.sap-select-sm { width: auto; padding: 5px 8px; font-size: 12px; }

.sap-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--sap-text-body);
    margin-bottom: 6px;
}

.sap-form-section {
    margin-bottom: 20px;
    position: relative;
}

.sap-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 14px;
}

.sap-form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 14px;
}

.sap-form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--sap-text-body);
}

.sap-form-actions {
    display: flex;
    gap: 10px;
    padding-top: 16px;
    border-top: 1px solid var(--sap-table-border);
    margin-top: 16px;
}

/* ── Student search ───────────────────────────────────────── */
.sap-student-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--sap-card-bg);
    border: 1.5px solid var(--sap-input-border);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,.1);
    z-index: 999;
    max-height: 200px;
    overflow-y: auto;
}

.sap-sr-item {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid var(--sap-table-border);
    font-size: 13px;
    transition: background .1s;
    color: var(--sap-text-body);
}

.sap-sr-item:hover { background: var(--sap-table-row-hover); }
.sap-sr-item:last-child { border-bottom: none; }
.sap-sr-empty { color: var(--sap-text-secondary); cursor: default; }

.sap-selected-student {
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 13px;
    color: #166534;
    margin-top: 8px;
}

.sap-new-student-form {
    background: #f5f3ff;
    border: 1px solid #ddd6fe;
    border-radius: 8px;
    padding: 16px;
    margin-top: 8px;
}

/* ── Modal ────────────────────────────────────────────────── */
.sap-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.sap-modal-overlay[hidden] { display: none !important; }

.sap-modal {
    background: var(--sap-card-bg);
    border-radius: 16px;
    width: 100%;
    max-width: 520px;
    max-height: 88vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,.2);
}

.sap-modal-lg { max-width: 720px; }

.sap-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--sap-table-border);
    position: sticky;
    top: 0;
    background: var(--sap-card-bg);
    z-index: 1;
}

.sap-modal-head h3 {
    margin: 0;
    font-size: 17px;
    font-weight: 700;
    color: var(--sap-text-primary);
}

.sap-modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--sap-text-secondary);
    line-height: 1;
    padding: 4px;
    border-radius: 4px;
    transition: color .15s;
}

.sap-modal-close:hover { color: var(--sap-text-primary); }

.sap-modal-body {
    padding: 20px 24px 24px;
}

/* ── Application view ─────────────────────────────────────── */
.sap-app-view-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.sap-app-view-header h3 { margin: 0 0 4px; font-size: 18px; color: var(--sap-text-primary); }
.sap-app-view-header p  { margin: 0; color: var(--sap-text-secondary); font-size: 14px; }

.sap-detail-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.sap-detail-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--sap-table-border);
    color: var(--sap-text-body);
}

.sap-detail-table td:first-child {
    font-weight: 600;
    color: var(--sap-text-secondary);
    text-transform: capitalize;
    width: 40%;
}

/* ── Overview Stats Grid ───────────────────────────────────── */
.sap-overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    padding: 24px 28px;
    overflow-y: auto;
    flex: 1;
}

.sap-stat-card {
    background: var(--sap-card-bg);
    border: 1px solid var(--sap-card-border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    cursor: pointer;
    transition: box-shadow .15s, transform .15s;
    position: relative;
    overflow: hidden;
    height: fit-content;
}

.sap-stat-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,.08);
    transform: translateY(-2px);
}

.sap-stat-card--alert {
    border-color: #fecaca;
    background: var(--sap-card-bg);
}

.sap-dark .sap-stat-card--alert {
    border-color: #7f1d1d;
}

.sap-stat-card__icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sap-stat-card__body { flex: 1; }

.sap-stat-card__num {
    font-size: 32px;
    font-weight: 800;
    color: var(--sap-text-primary);
    line-height: 1;
    margin-bottom: 4px;
    font-family: 'DM Sans', sans-serif;
}

.sap-stat-card__label {
    font-size: 13px;
    color: var(--sap-text-secondary);
    font-weight: 500;
}

.sap-stat-card__action {
    font-size: 13px;
    font-weight: 600;
    color: var(--sap-accent);
    text-decoration: none;
    display: block;
}

/* ── Misc ─────────────────────────────────────────────────── */
.sap-loading {
    text-align: center;
    padding: 40px;
    color: var(--sap-text-secondary);
    font-size: 14px;
}

.sap-empty {
    text-align: center;
    padding: 40px;
    color: var(--sap-text-secondary);
    font-style: italic;
}

.sap-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    font-family: 'DM Sans', sans-serif;
    box-shadow: 0 4px 16px rgba(0,0,0,.15);
    opacity: 0;
    transform: translateY(8px);
    transition: all .25s ease;
    z-index: 9999999;
}

.sap-toast.show { opacity: 1; transform: translateY(0); }
.sap-toast-success { background: #22c55e; color: #fff; }
.sap-toast-error   { background: #ef4444; color: #fff; }

.sap-crud-form textarea.sap-input { min-height: 80px; }

.sap-pending-notice {
    text-align: center;
    padding: 60px 32px;
    max-width: 440px;
    margin: 60px auto;
}

.sap-pending-icon { font-size: 48px; margin-bottom: 16px; }
.sap-pending-notice h3 { margin: 0 0 8px; font-size: 22px; font-weight: 700; color: var(--sap-text-primary); }
.sap-pending-notice p  { color: var(--sap-text-secondary); margin: 0; line-height: 1.6; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
    .sams-agent-panel {
        flex-direction: column;
        height: auto;
        min-height: auto;
    }

    .sap-sidebar {
        width: 100%;
        height: auto;
        overflow: visible;
        padding: 12px 0;
        position: relative;
    }

    .sap-brand {
        padding: 0 16px 12px;
    }

    .sap-nav {
        flex-direction: row;
        overflow-x: auto;
        padding: 0 12px;
        gap: 4px;
        flex: none;
    }

    .sap-nav-item {
        white-space: nowrap;
        padding: 8px 12px;
        font-size: 13px;
    }

    .sap-sidebar-footer {
        flex-direction: row;
        padding: 8px 12px;
        gap: 8px;
    }

    .sap-theme-btn,
    .sap-logout-btn {
        width: auto;
        flex: 1;
        justify-content: center;
    }

    .sap-form-row { grid-template-columns: 1fr; }
    .sap-tab-header { flex-direction: column; gap: 12px; }

    .sap-overview-grid {
        grid-template-columns: 1fr 1fr;
        padding: 16px;
        gap: 12px;
    }

    .sap-stat-card__num { font-size: 24px; }

    .sap-main {
        overflow: visible;
    }

    .sap-tab {
        overflow: visible;
    }

    .sap-table-wrap {
        overflow-x: auto;
    }
}