/* ==========================================================================
   ExamPortal - Next-Gen Modern SaaS Design System (2026 Edition)
   Crafted with Plus Jakarta Sans, Glassmorphism, Micro-gradients & Antialiasing
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Devanagari:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Brand Colors */
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-active: #3730a3;
    --primary-light: #eef2ff;
    --primary-glow: rgba(79, 70, 229, 0.28);

    --accent: #f59e0b;
    --accent-glow: rgba(245, 158, 11, 0.3);
    --success: #10b981;
    --success-light: #ecfdf5;
    --danger: #f43f5e;
    --danger-light: #fff1f2;
    --info: #06b6d4;

    /* Neutrals & Surfaces */
    --slate-950: #070a12;
    --slate-900: #0b0f19;
    --slate-800: #131b2e;
    --slate-700: #1e293b;
    --slate-600: #475569;
    --slate-400: #94a3b8;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    --slate-50: #f8fafc;

    --bg-page: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --border-subtle: rgba(226, 232, 240, 0.8);

    /* Sidebar Variables */
    --sidebar-bg: #090d16;
    --sidebar-hover: #131c2e;
    --sidebar-active: #4f46e5;
    --sidebar-width: 270px;

    /* NTA CBT Standard Palette */
    --nta-not-visited: #64748b;
    --nta-not-answered: #ef4444;
    --nta-answered: #10b981;
    --nta-review: #8b5cf6;
    --nta-review-answered: #06b6d4;

    /* Modern Shadows */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.06);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.04);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.04);
    --shadow-glow: 0 0 24px var(--primary-glow);
}

/* Base & Typography */
body {
    background-color: var(--bg-page);
    color: var(--slate-800);
    font-family: 'Plus Jakarta Sans', 'Noto Sans Devanagari', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
}

.main-content {
    flex: 1 0 auto;
}

footer {
    flex-shrink: 0;
}

/* Custom Sleek Scrollbar */
::-webkit-scrollbar {
    width: 7px;
    height: 7px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* ==========================================================================
   Header & Navbar (Glassmorphic Dark Navbar)
   ========================================================================== */
.modern-announcement {
    background: linear-gradient(90deg, #f59e0b 0%, #fbbf24 100%);
    color: #0f172a;
    font-weight: 700;
    font-size: 13px;
    letter-spacing: -0.2px;
}

.modern-navbar {
    background: rgba(9, 13, 22, 0.92) !important;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 14px 0;
    transition: all 0.2s ease;
}

.modern-navbar .navbar-brand {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: -0.4px;
    color: #ffffff;
}

.modern-navbar .nav-link {
    font-size: 14px;
    font-weight: 600;
    color: #94a3b8 !important;
    padding: 8px 16px !important;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.modern-navbar .nav-link:hover {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.06);
}

.modern-navbar .nav-link.active {
    color: #ffffff !important;
    background: rgba(79, 70, 229, 0.25);
    border: 1px solid rgba(99, 102, 241, 0.4);
}

/* ==========================================================================
   Hero Section (Deep Radial Mesh Gradient + Ambient Glow)
   ========================================================================== */
.hero-gradient {
    background: radial-gradient(135% 120% at 50% 0%, #1e1b4b 0%, #090d16 100%);
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.hero-gradient::before {
    content: '';
    position: absolute;
    top: -20%;
    left: 15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.22) 0%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
}

.hero-gradient::after {
    content: '';
    position: absolute;
    bottom: -10%;
    right: 10%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
    filter: blur(70px);
    pointer-events: none;
}

.glass-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    color: #ffffff;
}

.hero-badge-pill {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 9999px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* ==========================================================================
   Interactive Catalog & Cards (Modern Exam Card UI)
   ========================================================================== */
.search-input-group {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 4px 14px;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.search-input-group:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.filter-btn-pill {
    font-size: 13px;
    font-weight: 600;
    padding: 7px 16px;
    border-radius: 9999px !important;
    border: 1px solid var(--border-color);
    color: var(--slate-700);
    background: #ffffff;
    transition: all 0.2s ease;
}

.filter-btn-pill:hover {
    background: var(--slate-100);
    color: var(--slate-900);
    border-color: #cbd5e1;
}

.filter-btn-pill.active {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.exam-card-modern {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: 18px;
    transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.exam-card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), #818cf8);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.exam-card-modern:hover {
    transform: translateY(-5px);
    border-color: #c7d2fe;
    box-shadow: 0 16px 32px rgba(79, 70, 229, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
}

.exam-card-modern:hover::before {
    opacity: 1;
}

.exam-card-badge {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: -0.2px;
    padding: 5px 12px;
    border-radius: 9999px;
}

.exam-spec-pill {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: #f8fafc;
    border-radius: 10px;
    margin-bottom: 6px;
    font-size: 13px;
}

/* ==========================================================================
   Feature Boxes & Steppers
   ========================================================================== */
.feature-box {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: 18px;
    padding: 28px;
    transition: all 0.28s ease;
    box-shadow: var(--shadow-sm);
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: #c7d2fe;
}

.step-number-badge {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: #ffffff;
    box-shadow: 0 8px 16px var(--primary-glow);
}

/* ==========================================================================
   Admin Left Sidebar Navigation Drawer
   ========================================================================== */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

.admin-sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    color: #f8fafc;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 1040;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.admin-sidebar-brand {
    padding: 22px 24px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    text-decoration: none;
    color: #ffffff;
}

.brand-icon-box {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #4f46e5, #818cf8);
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.admin-nav {
    list-style: none;
    padding: 18px 14px;
    margin: 0;
    flex-grow: 1;
    overflow-y: auto;
}

.admin-nav-item {
    margin-bottom: 4px;
}

.admin-nav-link {
    display: flex;
    align-items: center;
    padding: 11px 14px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 600;
    border-radius: 10px;
    transition: all 0.18s ease;
    position: relative;
}

.admin-nav-link i {
    font-size: 18px;
    width: 24px;
    margin-right: 12px;
}

.admin-nav-link:hover {
    background-color: var(--sidebar-hover);
    color: #ffffff;
}

.admin-nav-link.active {
    background: linear-gradient(90deg, #4f46e5 0%, #4338ca 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}

.admin-nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3px;
    background: #ffffff;
    border-radius: 4px;
}

.admin-nav-heading {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #475569;
    font-weight: 800;
    padding: 16px 14px 6px;
}

.admin-sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background-color: rgba(0, 0, 0, 0.25);
}

.admin-content-area {
    flex-grow: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-page);
}

.admin-topbar {
    height: 64px;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1030;
    box-shadow: var(--shadow-xs);
}

.admin-page-body {
    padding: 28px;
    flex-grow: 1;
}

/* ==========================================================================
   Modern Cards & KPI Dashboard Boxes
   ========================================================================== */
.card {
    border-radius: 16px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
}

.stat-metric-card {
    background: #ffffff;
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.stat-metric-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: #c7d2fe;
}

.stat-icon-wrapper {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

/* ==========================================================================
   Tables & Data Presentation
   ========================================================================== */
.table {
    --bs-table-hover-bg: #f8fafc;
}

.table thead th {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
    color: var(--slate-600);
    background-color: #f8fafc;
    border-bottom: 1px solid var(--border-color);
    padding: 14px 16px;
}

.table tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

/* ==========================================================================
   NTA CBT Exam Player Styles
   ========================================================================== */
.palette-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    max-height: 400px;
    overflow-y: auto;
    padding: 12px;
}

.palette-btn {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border: 2px solid transparent;
    transition: all 0.15s ease;
    cursor: pointer;
    box-shadow: var(--shadow-xs);
}

.palette-btn:hover {
    transform: scale(1.08);
}

.palette-btn.active-question {
    border-color: #0f172a !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.45);
}

.palette-not-visited {
    background-color: #f1f5f9;
    color: #475569;
    border-color: #e2e8f0;
}

.palette-not-answered {
    background-color: var(--nta-not-answered);
    color: #ffffff;
}

.palette-answered {
    background-color: var(--nta-answered);
    color: #ffffff;
}

.palette-review {
    background-color: var(--nta-review);
    color: #ffffff;
}

.palette-review-answered {
    background-color: var(--nta-review);
    color: #ffffff;
}

.palette-review-answered::after {
    content: '';
    position: absolute;
    top: 4px;
    right: 4px;
    width: 9px;
    height: 9px;
    background-color: #10b981;
    border-radius: 50%;
    border: 1.5px solid #fff;
}

/* Option Cards in CBT Exam */
.option-label-card {
    cursor: pointer;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 20px;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    background-color: #ffffff;
    display: flex;
    align-items: flex-start;
    box-shadow: var(--shadow-xs);
}

.option-label-card:hover {
    border-color: var(--primary);
    background-color: #f5f3ff;
    transform: translateX(3px);
}

.option-label-card.selected {
    border-color: var(--primary);
    background-color: #eef2ff;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.12);
}

.option-badge {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #f1f5f9;
    color: #334155;
    font-weight: 800;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 14px;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.option-label-card.selected .option-badge {
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: #ffffff;
    box-shadow: 0 4px 8px var(--primary-glow);
}

/* Timer Display */
.timer-pill {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 1.5px;
}

.timer-warning {
    animation: pulse 1s infinite;
    color: #f43f5e !important;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.4; }
    100% { opacity: 1; }
}

/* Print Utilities */
@media print {
    .no-print,
    .admin-sidebar,
    .admin-topbar,
    .modern-navbar,
    .modern-announcement,
    nav,
    footer,
    .btn,
    .filter-btn-pill {
        display: none !important;
    }

    body {
        background: #ffffff !important;
        color: #000000 !important;
        padding: 0 !important;
        margin: 0 !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    .main-content,
    .admin-wrapper,
    .admin-content-area,
    .admin-page-body {
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        display: block !important;
    }

    #printable-card,
    #printable-guide,
    .printable-content {
        display: block !important;
        visibility: visible !important;
        position: static !important;
        width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
        border: none !important;
        box-shadow: none !important;
    }

    #printable-card *,
    #printable-guide *,
    .printable-content * {
        visibility: visible !important;
    }

    section, .card {
        page-break-inside: avoid;
        break-inside: avoid;
    }

    h1, h2, h3, h4, h5 {
        page-break-after: avoid;
        break-after: avoid;
    }

    .topperkon-watermark-pattern {
        display: block !important;
        position: absolute !important;
        top: 0 !important;
        left: 0 !important;
        width: 100% !important;
        height: 100% !important;
        background-repeat: repeat !important;
        opacity: 0.08 !important;
        z-index: 0 !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    .topperkon-watermark-center {
        display: block !important;
        position: fixed !important;
        top: 45% !important;
        left: 50% !important;
        transform: translate(-50%, -50%) rotate(-35deg) !important;
        font-size: 70pt !important;
        font-weight: 900 !important;
        color: rgba(0, 0, 0, 0.07) !important;
        letter-spacing: 10px !important;
        z-index: 99999 !important;
        pointer-events: none !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
}

/* ==========================================================================
   Modern SaaS UI Elements (Auth, Badges, Metrics, Merit)
   ========================================================================== */

/* Soft Badges */
.badge-soft-primary {
    background-color: #eef2ff !important;
    color: #4338ca !important;
    border: 1px solid #c7d2fe !important;
}

.badge-soft-success {
    background-color: #ecfdf5 !important;
    color: #047857 !important;
    border: 1px solid #a7f3d0 !important;
}

.badge-soft-warning {
    background-color: #fffbeb !important;
    color: #b45309 !important;
    border: 1px solid #fde68a !important;
}

.badge-soft-danger {
    background-color: #fff1f2 !important;
    color: #be123c !important;
    border: 1px solid #fecdd3 !important;
}

.badge-soft-info {
    background-color: #f0fdfa !important;
    color: #0f766e !important;
    border: 1px solid #99f6e4 !important;
}

/* Modern Auth Layout */
.auth-page-wrapper {
    min-height: calc(100vh - 160px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 16px;
    background: radial-gradient(circle at 50% 20%, rgba(79, 70, 229, 0.08) 0%, transparent 60%);
    position: relative;
}

.auth-card-modern {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    box-shadow: 0 20px 40px -15px rgba(15, 23, 42, 0.08), 0 0 1px 1px rgba(15, 23, 42, 0.04);
    overflow: hidden;
    transition: all 0.25s ease;
}

.auth-card-header {
    background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%);
    color: #ffffff;
    padding: 32px 28px;
    text-align: center;
    position: relative;
}

.auth-card-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.auth-icon-circle {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--primary), #818cf8);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #ffffff;
    margin-bottom: 12px;
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.35);
}

/* Demo Credential Chips */
.demo-cred-chip {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    color: var(--slate-700);
    padding: 8px 14px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.18s ease;
}

.demo-cred-chip:hover {
    background: #eef2ff;
    border-color: #c7d2fe;
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.12);
}

/* Modern Form Controls */
.form-control, .form-select {
    border-radius: 12px;
    border: 1px solid #cbd5e1;
    padding: 11px 16px;
    font-size: 14.5px;
    font-weight: 500;
    color: var(--slate-900);
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3.5px var(--primary-glow);
}

.input-group-text {
    border-radius: 12px;
    border: 1px solid #cbd5e1;
    background-color: #f8fafc;
    color: var(--slate-600);
    padding: 11px 16px;
}

/* Student Hero Banner */
.student-hero-banner {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 60%, #4338ca 100%);
    color: #ffffff;
    border-radius: 20px;
    padding: 28px 32px;
    box-shadow: 0 12px 28px rgba(30, 27, 75, 0.18);
    position: relative;
    overflow: hidden;
}

.student-hero-banner::after {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

/* Merit Cards */
.merit-banner-gold {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border: 2px solid #f59e0b;
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.18);
}

.merit-banner-silver {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 2px solid #94a3b8;
    box-shadow: 0 8px 24px rgba(148, 163, 184, 0.18);
}

.merit-banner-bronze {
    background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);
    border: 2px solid #ea580c;
    box-shadow: 0 8px 24px rgba(234, 88, 12, 0.18);
}

/* ==========================================================================
   Math Formulas & KaTeX Typography System
   ========================================================================== */
.math-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px 8px 0 0;
    padding: 6px 10px;
    border-bottom: none;
}

.math-btn {
    font-size: 12px;
    padding: 3px 8px;
    border: 1px solid #cbd5e1;
    background: #ffffff;
    color: #1e293b;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 600;
    transition: all 0.15s ease;
}

.math-btn:hover {
    background: #eef2ff;
    color: #4f46e5;
    border-color: #a5b4fc;
    transform: translateY(-1px);
}

.math-preview-box {
    background: #f1f5f9;
    border: 1px dashed #cbd5e1;
    border-radius: 8px;
    padding: 12px 16px;
    min-height: 48px;
    font-size: 15px;
    color: #0f172a;
}

.katex {
    font-size: 1.08em;
    text-rendering: auto;
}

.katex-display {
    margin: 0.5em 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 4px 0;
}

/* ==========================================================================
   Topper Highlights & Modern Showcase Components
   ========================================================================== */
.topper-card {
    background: #ffffff;
    border-radius: 18px;
    border: 1px solid rgba(226, 232, 240, 0.85);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
}

.topper-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    border-color: rgba(245, 158, 11, 0.4);
}

.topper-img-box {
    position: relative;
    height: 220px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    overflow: hidden;
}

.topper-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.topper-card:hover .topper-img-box img {
    transform: scale(1.06);
}

.hero-stats-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    padding: 16px 20px;
    transition: all 0.25s ease;
}

.hero-stats-card:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(245, 158, 11, 0.5);
    transform: translateY(-3px);
}

.section-tag-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   TOPPERKON.IN PDF & Scorecard Watermark System
   ========================================================================== */
.watermarked-card {
    position: relative;
    overflow: hidden;
}

.topperkon-watermark-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='320' height='180'><text x='50%' y='50%' font-size='22' font-family='Arial, sans-serif' font-weight='900' fill='%231e293b' opacity='0.055' transform='rotate(-28, 160, 90)' text-anchor='middle'>TOPPERKON.IN</text></svg>");
    background-repeat: repeat;
    z-index: 1;
}

.topperkon-watermark-center {
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-32deg);
    font-size: 80px;
    font-weight: 900;
    color: rgba(79, 70, 229, 0.06);
    letter-spacing: 8px;
    pointer-events: none;
    user-select: none;
    z-index: 1;
    white-space: nowrap;
    text-transform: uppercase;
}

.watermark-content-layer {
    position: relative;
    z-index: 2;
}

.scorecard-official-footer {
    border-top: 2px dashed #cbd5e1;
    padding-top: 14px;
    margin-top: 24px;
    font-size: 11.5px;
    color: #64748b;
}