/* =====================================================================
   SCHOOL MANAGEMENT SYSTEM — STYLESHEET
   Design system: Indigo primary, slate text, soft surfaces, Inter typeface
   ===================================================================== */

:root {
    /* Palette - Enhanced Premium Indigo */
    --primary:        #6366f1;
    --primary-dark:   #4f46e5;
    --primary-light:  #818cf8;
    --primary-50:     #eef2ff;
    --primary-100:    #e0e7ff;

    --success:        #10b981;
    --warning:        #f59e0b;
    --danger:         #ef4444;
    --info:           #3b82f6;

    /* Neutrals */
    --bg:             #f8fafc;
    --surface:        rgba(255, 255, 255, 0.85);
    --surface-solid:  #ffffff;
    --surface-2:      #f1f5f9;
    --border:         rgba(226, 232, 240, 0.8);
    --border-soft:    #f8fafc;
    --text:           #0f172a;
    --text-muted:     #64748b;
    --text-soft:      #94a3b8;

    /* Layout */
    --sidebar-w:      280px;
    --sidebar-w-collapsed: 88px;
    --topbar-h:       72px;

    /* Radius / shadow */
    --radius:         16px;
    --radius-sm:      10px;
    --radius-lg:      24px;
    --shadow-xs:      0 2px 4px rgba(15, 23, 42, 0.02);
    --shadow-sm:      0 4px 6px rgba(15, 23, 42, 0.04), 0 2px 4px rgba(15, 23, 42, 0.03);
    --shadow-md:      0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    --shadow-lg:      0 20px 40px -10px rgba(15, 23, 42, 0.12), 0 10px 20px -10px rgba(15, 23, 42, 0.08);

    --transition:     300ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---- Reset ---- */
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
    color: var(--text);
    font-weight: 700;
    letter-spacing: -0.01em;
}
a { text-decoration: none; color: var(--primary); }
a:hover { color: var(--primary-dark); }

/* ============= LAYOUT ============= */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ============= SIDEBAR ============= */
.sidebar {
    width: var(--sidebar-w);
    background: linear-gradient(195deg, rgba(30, 27, 75, 0.95) 0%, rgba(49, 46, 129, 0.95) 50%, rgba(55, 48, 163, 0.95) 100%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    color: #c7d2fe;
    position: fixed;
    inset: 0 auto 0 0;
    display: flex;
    flex-direction: column;
    z-index: 1040;
    transition: transform var(--transition);
    box-shadow: 4px 0 32px rgba(15, 23, 42, 0.25);
}
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.brand-logo {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(255,255,255,0.12);
    display: grid; place-items: center;
    flex-shrink: 0;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.15);
}
.brand-logo img { width: 100%; height: 100%; object-fit: cover; }
.brand-logo-text {
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    font-family: 'Plus Jakarta Sans', sans-serif;
}
.brand-info h5 {
    color: #fff;
    margin: 0;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.2;
}
.brand-info small {
    color: #a5b4fc;
    font-size: 11px;
    display: block;
    margin-top: 2px;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.18) transparent;
}
.sidebar-nav::-webkit-scrollbar { width: 6px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.18); border-radius: 3px; }

.nav-link-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: rgba(199, 210, 254, 0.85);
    border-radius: 12px;
    margin-bottom: 4px;
    font-weight: 600;
    font-size: 14px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.nav-link-item i { width: 22px; text-align: center; font-size: 16px; transition: transform var(--transition); }
.nav-link-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    transform: translateX(4px);
}
.nav-link-item:hover i { transform: scale(1.1); }
.nav-link-item.active {
    background: linear-gradient(90deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%);
    color: #ffffff;
    box-shadow: inset 2px 0 0 #818cf8, 0 4px 12px rgba(0,0,0,0.15);
}
.nav-link-item.child { padding-left: 38px; font-size: 13px; font-weight: 500; }

.nav-group-toggle .chev { margin-left: auto; transition: transform var(--transition); font-size: 11px; }
.nav-group.open .chev { transform: rotate(180deg); }
.nav-group-items {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
}
.nav-group.open .nav-group-items { max-height: 400px; }
.nav-group.open .nav-group-toggle { background: rgba(255,255,255,0.06); color: #fff; }

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.logout-btn {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 11px;
    background: rgba(239, 68, 68, 0.15);
    color: #fecaca;
    border-radius: 10px;
    font-weight: 600;
    font-size: 13.5px;
    transition: all var(--transition);
}
.logout-btn:hover { background: rgba(239, 68, 68, 0.3); color: #fff; }

/* ============= MAIN AREA ============= */
.main-area {
    flex: 1;
    margin-left: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    min-width: 0;
    transition: margin var(--transition);
}

/* ============= TOPBAR ============= */
.topbar {
    height: var(--topbar-h);
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 1030;
    box-shadow: var(--shadow-sm);
}
.btn-toggle-sidebar {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 40px; height: 40px;
    border-radius: 10px;
    display: grid; place-items: center;
    cursor: pointer;
    transition: all var(--transition);
}
.btn-toggle-sidebar:hover { background: var(--primary-50); color: var(--primary); border-color: var(--primary-100); }

.topbar-search {
    flex: 0 1 420px;
    position: relative;
}
.topbar-search > i {
    position: absolute;
    left: 14px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-soft);
}
.topbar-search input {
    width: 100%;
    border: 1px solid var(--border);
    background: var(--surface-2);
    border-radius: 10px;
    padding: 10px 14px 10px 40px;
    font-size: 13.5px;
    transition: all var(--transition);
}
.topbar-search input:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px var(--primary-50);
}
.search-results {
    position: absolute;
    top: calc(100% + 6px);
    left: 0; right: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    max-height: 360px;
    overflow-y: auto;
    display: none;
    z-index: 1050;
}
.search-results.show { display: block; }
.search-results .sr-item {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-soft);
    color: var(--text);
    display: flex; align-items: center; gap: 10px;
    font-size: 13px;
    cursor: pointer;
}
.search-results .sr-item:hover { background: var(--primary-50); }
.search-results .sr-item:last-child { border-bottom: none; }
.search-results .sr-empty { padding: 20px; text-align: center; color: var(--text-soft); font-size: 13px; }

.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-academic {
    display: flex; align-items: center; gap: 8px;
    background: var(--primary-50);
    color: var(--primary-dark);
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 12.5px;
    font-weight: 600;
}

.user-chip {
    display: flex; align-items: center; gap: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 6px 12px 6px 6px;
    cursor: pointer;
    transition: all var(--transition);
}
.user-chip:hover { background: var(--surface-2); border-color: var(--primary-100); }
.user-avatar {
    width: 36px; height: 36px;
    border-radius: 8px;
    display: grid; place-items: center;
    color: #fff;
    font-weight: 700;
    font-size: 13px;
}
.user-meta { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.user-meta strong { font-size: 13px; color: var(--text); }
.user-meta small { font-size: 11px; color: var(--text-muted); text-transform: capitalize; }

/* ============= PAGE CONTENT ============= */
.page-content {
    padding: 24px;
    flex: 1;
}
.app-footer {
    border-top: 1px solid var(--border);
    background: var(--surface);
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 12.5px;
}

/* ============= PAGE HEADER ============= */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.page-header h1 {
    font-size: 24px;
    margin: 0 0 4px;
}
.page-header .breadcrumb-trail {
    color: var(--text-muted);
    font-size: 13px;
}
.page-header-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* ============= CARDS ============= */
.card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
    box-shadow: var(--shadow-md);
}
.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-soft);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.card-header h5 {
    margin: 0;
    font-size: 15px;
    font-weight: 700;
}
.card-header .subtitle { color: var(--text-muted); font-size: 12.5px; }
.card-body { padding: 20px; }
.card-body-flush { padding: 0; }

/* ============= STAT CARDS ============= */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}
.stat-card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    position: relative;
    overflow: hidden;
    transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 400ms cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1;
}
.stat-card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-lg);
    border-color: rgba(99, 102, 241, 0.3);
}
.stat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(135deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.4) 100%);
    opacity: 0;
    transition: opacity var(--transition);
}
.stat-card:hover::after { opacity: 1; }

.stat-card .stat-icon {
    width: 48px; height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary-100) 0%, var(--primary-50) 100%);
    color: var(--primary);
    display: grid; place-items: center;
    font-size: 20px;
    margin-bottom: 18px;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.15);
    transition: transform var(--transition);
}
.stat-card:hover .stat-icon { transform: scale(1.1) rotate(-5deg); }
.stat-card.success .stat-icon { background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%); color: var(--success); box-shadow: 0 4px 10px rgba(16, 185, 129, 0.15); }
.stat-card.warning .stat-icon { background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%); color: var(--warning); box-shadow: 0 4px 10px rgba(245, 158, 11, 0.15); }
.stat-card.info .stat-icon    { background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%); color: var(--info); box-shadow: 0 4px 10px rgba(59, 130, 246, 0.15); }
.stat-card.danger .stat-icon  { background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%); color: var(--danger); box-shadow: 0 4px 10px rgba(239, 68, 68, 0.15); }

.stat-card .stat-value {
    font-size: 32px;
    font-weight: 800;
    font-family: 'Plus Jakarta Sans', sans-serif;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--text);
}
.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 6px;
    font-weight: 600;
}
.stat-card .stat-trend {
    margin-top: 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-soft);
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(15, 23, 42, 0.03);
    border-radius: 8px;
    width: max-content;
}
.stat-card .stat-trend.up { color: var(--success); background: rgba(16, 185, 129, 0.08); }
.stat-card .stat-trend.down { color: var(--danger); background: rgba(239, 68, 68, 0.08); }

/* ============= BUTTONS ============= */
.btn { font-weight: 600; font-size: 14px; border-radius: 10px; padding: 10px 18px; transition: all var(--transition); letter-spacing: 0.01em; }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 8px; }
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    color: #fff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35); }
.btn-outline-primary { color: var(--primary); border-color: var(--primary-100); }
.btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); }
.btn-outline-secondary { color: var(--text-muted); border-color: var(--border); }
.btn-outline-secondary:hover { background: var(--surface-2); color: var(--text); }
.btn-soft-success { background: #d1fae5; color: #065f46; border: none; }
.btn-soft-danger  { background: #fee2e2; color: #991b1b; border: none; }
.btn-soft-warning { background: #fef3c7; color: #92400e; border: none; }
.btn-icon {
    width: 32px; height: 32px;
    padding: 0;
    display: inline-grid;
    place-items: center;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-muted);
}
.btn-icon:hover { background: var(--primary-50); color: var(--primary); border-color: var(--primary-100); }
.btn-icon.danger:hover { background: #fee2e2; color: var(--danger); border-color: #fecaca; }

/* ============= TABLES ============= */
.table {
    margin: 0;
    font-size: 13.5px;
    color: var(--text);
}
.table thead th {
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 12px 16px;
    white-space: nowrap;
}
.table tbody td { padding: 12px 16px; border-bottom: 1px solid var(--border-soft); vertical-align: middle; }
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: var(--primary-50); }
.table-actions { display: flex; gap: 4px; }

/* ============= AVATARS ============= */
.avatar {
    width: 36px; height: 36px;
    border-radius: 10px;
    display: inline-grid;
    place-items: center;
    color: #fff;
    font-weight: 700;
    font-size: 13px;
    flex-shrink: 0;
}
.avatar-sm { width: 28px; height: 28px; font-size: 11px; border-radius: 7px; }
.avatar-lg { width: 64px; height: 64px; font-size: 22px; border-radius: 14px; }
.avatar-img { background: transparent !important; overflow: hidden; }
.avatar-img img { width: 100%; height: 100%; object-fit: cover; }

.user-cell { display: flex; align-items: center; gap: 10px; }
.user-cell .uc-name { font-weight: 600; color: var(--text); }
.user-cell .uc-sub { color: var(--text-muted); font-size: 12px; }

/* ============= BADGES ============= */
.badge {
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11.5px;
}
.badge.bg-soft-success { background: #d1fae5; color: #065f46; }
.badge.bg-soft-danger  { background: #fee2e2; color: #991b1b; }
.badge.bg-soft-warning { background: #fef3c7; color: #92400e; }
.badge.bg-soft-info    { background: #dbeafe; color: #1e40af; }
.badge.bg-soft-primary { background: var(--primary-50); color: var(--primary-dark); }
.badge.bg-soft-secondary { background: #f1f5f9; color: var(--text-muted); }

/* ============= FORMS ============= */
.form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}
.form-label .req { color: var(--danger); }
.form-control, .form-select {
    border: 1px solid var(--border);
    border-radius: 9px;
    padding: 10px 12px;
    font-size: 13.5px;
    color: var(--text);
    background: var(--surface);
    transition: all var(--transition);
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-50);
}
.form-control::placeholder { color: var(--text-soft); }
.input-group-text {
    background: var(--surface-2);
    border-color: var(--border);
    color: var(--text-muted);
    border-radius: 9px;
}

/* ============= FILTER BAR ============= */
.filter-bar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    align-items: end;
}
.filter-bar .filter-actions {
    display: flex;
    gap: 8px;
    align-items: end;
}

/* ============= EMPTY STATES ============= */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state .empty-icon {
    width: 80px; height: 80px;
    border-radius: 50%;
    background: var(--surface-2);
    display: grid; place-items: center;
    margin: 0 auto 16px;
    font-size: 30px;
    color: var(--text-soft);
}

/* ============= LOGIN PAGE ============= */
.login-wrapper {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--bg);
}
.login-aside {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #4338ca 100%);
    color: #fff;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}
.login-aside::before {
    content: '';
    position: absolute;
    width: 600px; height: 600px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    top: -200px; right: -200px;
}
.login-aside::after {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    bottom: -150px; left: -150px;
}
.login-aside-content { position: relative; z-index: 1; }
.login-aside h1 { color: #fff; font-size: 36px; line-height: 1.2; margin: 0 0 16px; }
.login-aside p { color: #e0e7ff; font-size: 15px; line-height: 1.6; max-width: 460px; }
.login-feature-list { list-style: none; padding: 0; margin: 30px 0 0; }
.login-feature-list li {
    display: flex; align-items: center; gap: 12px;
    color: #e0e7ff;
    padding: 10px 0;
    font-size: 14.5px;
}
.login-feature-list i { color: #c7d2fe; }
.login-footer-credit { position: relative; z-index: 1; color: #c7d2fe; font-size: 12px; }

.login-main {
    display: grid;
    place-items: center;
    padding: 40px;
}
.login-card {
    width: 100%;
    max-width: 400px;
}
.login-card .login-logo {
    display: flex; align-items: center; gap: 14px;
    margin-bottom: 30px;
}
.login-card .login-logo .brand-logo { width: 52px; height: 52px; }
.login-card h2 { font-size: 26px; margin: 0 0 8px; }
.login-card .login-sub { color: var(--text-muted); margin-bottom: 30px; }

@media (max-width: 991px) {
    .login-wrapper { grid-template-columns: 1fr; }
    .login-aside { display: none; }
}

/* ============= REPORT CARD PRINT ============= */
.report-print-wrapper {
    background: #f4f6fb;
    min-height: 100vh;
    padding: 30px 0;
}
.report-sheet { width: 210mm; min-height: 297mm;
    margin: 0 auto 30px;
    background: #fff;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
    padding: 50px;
}
.report-toolbar { width: 210mm;
    margin: 0 auto 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

@media print {
    body { background: #fff !important; }
    .sidebar, .topbar, .app-footer, .report-toolbar, .no-print { display: none !important; }
    .main-area { margin-left: 0 !important; }
    .page-content { padding: 0 !important; }
    .report-print-wrapper { background: #fff; padding: 0; }
    .report-sheet {
        box-shadow: none;
        margin: 0;
        width: 100%;
        padding: 0;
        page-break-after: always;
    }
    @page { size: 8.27in 11.69in; margin: 0; }
}

/* ============= MISC ============= */
.text-muted-2 { color: var(--text-muted) !important; }
.cursor-pointer { cursor: pointer; }
.divider { height: 1px; background: var(--border); margin: 20px 0; }
.fw-semibold { font-weight: 600 !important; }
.text-xs { font-size: 11.5px; }
.text-sm { font-size: 13px; }
.shadow-soft { box-shadow: var(--shadow-sm); }
.rounded-xl { border-radius: var(--radius) !important; }
.progress-thin { height: 6px; border-radius: 4px; }

/* responsive sidebar */
@media (max-width: 991px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.show { transform: translateX(0); }
    .main-area { margin-left: 0; }
    .topbar-search { display: none !important; }
}
.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,0.4);
    z-index: 1035;
    display: none;
}
.sidebar-backdrop.show { display: block; }

/* Template preview thumbnails */
.template-card {
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--surface);
    height: 100%;
}
.template-card:hover { border-color: var(--primary-100); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.template-card.active { border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-50); }
.template-preview {
    aspect-ratio: 3 / 4;
    background: var(--surface-2);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
    border: 1px solid var(--border-soft);
    position: relative;
}
.template-preview img { width: 100%; height: 100%; object-fit: cover; }
.template-card h6 { margin: 0 0 4px; font-size: 14px; font-weight: 700; }
.template-card p { margin: 0; color: var(--text-muted); font-size: 12.5px; }

/* Tabs */
.nav-tabs { border-bottom: 1px solid var(--border); gap: 4px; }
.nav-tabs .nav-link {
    color: var(--text-muted);
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    padding: 10px 16px;
    font-weight: 600;
    font-size: 13.5px;
}
.nav-tabs .nav-link:hover { color: var(--text); }
.nav-tabs .nav-link.active { color: var(--primary); border-bottom-color: var(--primary); background: transparent; }