/* ============================================================================
   ExamPortal design system
   A single source of truth for color, type, spacing, and motion so every
   existing page (which already leans on Bootstrap's card/table/btn/badge/
   form-control classes) picks up a cohesive, modern look without needing a
   rewrite of every component. Page-specific classes further down layer
   on top of this.
   ============================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Lexend:wght@600;700;800&display=swap');

:root {
    --ep-primary: #4f46e5;
    --ep-primary-dark: #4338ca;
    --ep-primary-light: #eef2ff;
    --ep-accent: #d4a017;

    --ep-ink: #0f172a;
    --ep-ink-soft: #334155;
    --ep-muted: #64748b;
    --ep-border: #e2e8f0;
    --ep-surface: #ffffff;
    --ep-surface-muted: #f8fafc;
    --ep-bg: #f4f6fb;

    --ep-success: #16a34a;
    --ep-success-bg: #dcfce7;
    --ep-danger: #dc2626;
    --ep-danger-bg: #fee2e2;
    --ep-warning: #d97706;
    --ep-warning-bg: #fef3c7;
    --ep-info: #0891b2;
    --ep-info-bg: #cffafe;

    --ep-radius-sm: 0.5rem;
    --ep-radius: 0.85rem;
    --ep-radius-lg: 1.25rem;

    --ep-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --ep-shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
    --ep-shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.14);

    --ep-ease: cubic-bezier(0.16, 1, 0.3, 1);

    /* Bootstrap variable overrides - lets every btn-primary / text-bg-primary /
       .card / .form-control already used throughout the app inherit the new
       palette and shape without touching markup. */
    --bs-primary: var(--ep-primary);
    --bs-primary-rgb: 79, 70, 229;
    --bs-body-color: var(--ep-ink-soft);
    --bs-body-bg: var(--ep-bg);
    --bs-border-color: var(--ep-border);
    --bs-border-radius: var(--ep-radius-sm);
    --bs-border-radius-lg: var(--ep-radius);
    --bs-border-radius-sm: 0.4rem;
    --bs-link-color: var(--ep-primary);
    --bs-link-hover-color: var(--ep-primary-dark);
    --bs-success: var(--ep-success);
    --bs-danger: var(--ep-danger);
    --bs-warning: var(--ep-warning);
    --bs-info: var(--ep-info);
    --bs-font-sans-serif: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

html, body {
    font-family: var(--bs-font-sans-serif);
    background: var(--ep-bg);
    color: var(--ep-ink-soft);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Lexend', var(--bs-font-sans-serif);
    color: var(--ep-ink);
    font-weight: 700;
    letter-spacing: -0.01em;
}

a, .btn-link {
    color: var(--ep-primary);
    text-decoration: none;
}
a:hover, .btn-link:hover { color: var(--ep-primary-dark); }

.btn {
    font-weight: 600;
    border-radius: var(--ep-radius-sm);
    padding: 0.5rem 1.1rem;
    transition: transform 0.15s var(--ep-ease), box-shadow 0.15s var(--ep-ease), background-color 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}
.btn:active { transform: scale(0.97); }
.btn-sm { border-radius: 0.45rem; }
.btn-lg { border-radius: 0.7rem; }

.btn-primary {
    color: #fff;
    background-color: var(--ep-primary);
    border-color: var(--ep-primary);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.28);
}
.btn-primary:hover, .btn-primary:focus {
    background-color: var(--ep-primary-dark);
    border-color: var(--ep-primary-dark);
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.36);
    transform: translateY(-1px);
}
.btn-outline-primary { color: var(--ep-primary); border-color: var(--ep-primary); }
.btn-outline-primary:hover { background-color: var(--ep-primary); border-color: var(--ep-primary); transform: translateY(-1px); }
.btn-outline-secondary:hover, .btn-outline-danger:hover, .btn-outline-success:hover { transform: translateY(-1px); }

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus, .form-select:focus {
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.22);
}

.content { padding-top: 1.5rem; padding-bottom: 3rem; }

h1:focus { outline: none; }

.valid.modified:not([type=checkbox]) { outline: 1px solid var(--ep-success); }
.invalid { outline: 1px solid var(--ep-danger); }
.validation-message { color: var(--ep-danger); font-size: 0.85rem; }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
    border-radius: var(--ep-radius-sm);
}
.blazor-error-boundary::after { content: "An error has occurred."; }

.darker-border-checkbox.form-check-input { border-color: #929292; }

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}
.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* ---- Form controls ---- */
.form-control, .form-select {
    border-radius: var(--ep-radius-sm);
    border-color: var(--ep-border);
    padding: 0.55rem 0.85rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-control:focus, .form-select:focus { border-color: var(--ep-primary); }
.form-label { font-weight: 600; color: var(--ep-ink); font-size: 0.9rem; margin-bottom: 0.35rem; }
.form-check-input:checked { background-color: var(--ep-primary); border-color: var(--ep-primary); }

/* ---- Cards ---- */
.card {
    border-radius: var(--ep-radius);
    border: 1px solid var(--ep-border);
    box-shadow: var(--ep-shadow-sm);
    transition: box-shadow 0.2s var(--ep-ease), transform 0.2s var(--ep-ease);
}
.card-body { padding: 1.35rem; }
.card-title { font-family: 'Lexend', var(--bs-font-sans-serif); }

/* ---- Badges ---- */
.badge { font-weight: 600; letter-spacing: 0.01em; padding: 0.4em 0.7em; border-radius: 0.5rem; }

/* ---- Alerts ---- */
.alert { border-radius: var(--ep-radius-sm); border: 1px solid transparent; }

/* ---- Tables ---- */
.table {
    --bs-table-hover-bg: var(--ep-primary-light);
    vertical-align: middle;
}
.table thead th {
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    color: var(--ep-muted);
    font-weight: 700;
    border-bottom-width: 1px;
    background: var(--ep-surface-muted);
    white-space: nowrap;
}
.table tbody tr { transition: background-color 0.12s ease; }
.table > :not(caption) > * > * { padding: 0.8rem 0.9rem; }

/* ---- Modals ---- */
.modal-content { border-radius: var(--ep-radius); border: none; box-shadow: var(--ep-shadow-lg); }
.modal-header { border-bottom: 1px solid var(--ep-border); }
.modal-footer { border-top: 1px solid var(--ep-border); }

/* ---- Page header pattern (used by page-title markup added across pages) ---- */
.page-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.page-header h3 { margin-bottom: 0.2rem; }
.page-subtitle { color: var(--ep-muted); font-size: 0.95rem; margin: 0; }

/* ---- Stat / summary tiles ---- */
.stat-tile {
    background: var(--ep-surface);
    border: 1px solid var(--ep-border);
    border-radius: var(--ep-radius);
    padding: 1.1rem 1.25rem;
    box-shadow: var(--ep-shadow-sm);
    transition: transform 0.2s var(--ep-ease), box-shadow 0.2s var(--ep-ease);
}
.stat-tile:hover { transform: translateY(-3px); box-shadow: var(--ep-shadow); }
.stat-tile .stat-tile-value { font-family: 'Lexend', var(--bs-font-sans-serif); font-size: 1.7rem; font-weight: 800; color: var(--ep-ink); line-height: 1.15; }
.stat-tile .stat-tile-label { color: var(--ep-muted); font-size: 0.82rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
.stat-tile .stat-tile-icon {
    width: 2.6rem; height: 2.6rem; border-radius: 0.65rem;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem; background: var(--ep-primary-light); color: var(--ep-primary);
    margin-bottom: 0.6rem;
}

/* ---- Empty states ---- */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    border: 1px dashed var(--ep-border);
    border-radius: var(--ep-radius);
    background: var(--ep-surface);
    color: var(--ep-muted);
}
.empty-state .empty-state-icon { font-size: 2.5rem; margin-bottom: 0.75rem; opacity: 0.7; }
.empty-state h5 { color: var(--ep-ink); }

/* ---- Loading / skeleton states ---- */
.ep-spinner {
    display: inline-block;
    width: 1.1rem; height: 1.1rem;
    border: 2.5px solid rgba(79, 70, 229, 0.25);
    border-top-color: var(--ep-primary);
    border-radius: 50%;
    animation: ep-spin 0.7s linear infinite;
    vertical-align: -0.2em;
}
.ep-loading-row { display: flex; align-items: center; gap: 0.6rem; color: var(--ep-muted); padding: 2rem 0; justify-content: center; }
@keyframes ep-spin { to { transform: rotate(360deg); } }

.skeleton {
    background: linear-gradient(90deg, #eef0f4 25%, #f7f8fb 37%, #eef0f4 63%);
    background-size: 400% 100%;
    animation: ep-shimmer 1.4s ease infinite;
    border-radius: 0.5rem;
}
@keyframes ep-shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* ---- Motion utilities ---- */
.ep-fade-in { animation: ep-fade-in 0.35s var(--ep-ease) both; }
.ep-fade-in-up { animation: ep-fade-in-up 0.4s var(--ep-ease) both; }
@keyframes ep-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes ep-fade-in-up { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.ep-stagger > * { animation: ep-fade-in-up 0.4s var(--ep-ease) both; }
.ep-stagger > *:nth-child(1) { animation-delay: 0.02s; }
.ep-stagger > *:nth-child(2) { animation-delay: 0.06s; }
.ep-stagger > *:nth-child(3) { animation-delay: 0.10s; }
.ep-stagger > *:nth-child(4) { animation-delay: 0.14s; }
.ep-stagger > *:nth-child(5) { animation-delay: 0.18s; }
.ep-stagger > *:nth-child(6) { animation-delay: 0.22s; }
.ep-stagger > *:nth-child(n+7) { animation-delay: 0.26s; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* ============================================================================
   ExamPortal application chrome
   ============================================================================ */

.nav-brand { color: #fff; }

.brand-mark-lg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.25rem;
    height: 3.25rem;
    border-radius: 0.9rem;
    background: linear-gradient(135deg, var(--ep-primary), #7c6ff0);
    color: #fff;
    font-family: 'Lexend', var(--bs-font-sans-serif);
    font-weight: 800;
    font-size: 1.1rem;
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
}

.auth-card {
    max-width: 420px;
    margin: 3rem auto;
    background: var(--ep-surface);
    border: 1px solid var(--ep-border);
    border-radius: var(--ep-radius-lg);
    padding: 2.25rem;
    box-shadow: var(--ep-shadow);
    animation: ep-fade-in-up 0.4s var(--ep-ease) both;
}

.teacher-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.teacher-photo-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1e3a5f;
    color: #f0c419;
    font-size: 2rem;
    font-weight: 700;
}

.top-student-card {
    border-radius: var(--ep-radius);
    transition: transform 0.15s var(--ep-ease), box-shadow 0.15s var(--ep-ease);
}
.top-student-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--ep-shadow);
}

.exam-card { transition: transform 0.2s var(--ep-ease), box-shadow 0.2s var(--ep-ease); }
.exam-card:hover { transform: translateY(-4px); box-shadow: var(--ep-shadow); border-color: #c7d2fe; }
.exam-meta li { display: flex; align-items: center; gap: 0.45rem; margin-bottom: 0.3rem; }
.exam-meta svg { flex-shrink: 0; opacity: 0.7; }

.student-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
}

/* ---- Public landing page (Home.razor) - notebook/topper-showcase theme ---- */

.landing-font { font-family: 'Kalam', cursive; }

/* Scroll-reveal (see wwwroot/js/scrollReveal.js) */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ep-ease), transform 0.7s var(--ep-ease);
}
.reveal-on-scroll.in-view { opacity: 1; transform: none; }
.reveal-on-scroll.delay-1 { transition-delay: 0.08s; }
.reveal-on-scroll.delay-2 { transition-delay: 0.16s; }
.reveal-on-scroll.delay-3 { transition-delay: 0.24s; }
.reveal-on-scroll.delay-4 { transition-delay: 0.32s; }

/* ---- Hero (two-column: copy + animated mockup) ---- */
.landing-hero {
    background: linear-gradient(135deg, #1e3a5f 0%, #2d4d75 100%);
    border-radius: 1.5rem;
    padding: 3.5rem 2.5rem;
    color: #fff;
    margin: 1.5rem 0 2rem;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 2.5rem;
    overflow: hidden;
    position: relative;
}
@media (max-width: 991.98px) {
    .landing-hero { grid-template-columns: 1fr; text-align: center; padding: 2.5rem 1.5rem; }
    .landing-hero-visual { order: -1; }
}

.landing-hero-copy .lead { color: rgba(255, 255, 255, 0.85); max-width: 520px; }
.landing-hero h1 { font-family: 'Kalam', cursive; font-weight: 700; font-size: 2.75rem; margin-bottom: 0.75rem; }
.landing-hero p.lead { margin: 0 0 1.5rem; }
@media (max-width: 991.98px) {
    .landing-hero-copy .lead { margin-left: auto; margin-right: auto; }
}

/* Headline words reveal one at a time, top-to-bottom stagger */
.hero-headline { display: flex; flex-wrap: wrap; gap: 0 0.5ch; justify-content: inherit; }
.hero-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    animation: hero-word-in 0.6s var(--ep-ease) forwards;
}
.hero-word:nth-child(1) { animation-delay: 0.05s; }
.hero-word:nth-child(2) { animation-delay: 0.12s; }
.hero-word:nth-child(3) { animation-delay: 0.19s; }
.hero-word:nth-child(4) { animation-delay: 0.26s; }
.hero-word:nth-child(5) { animation-delay: 0.33s; }
.hero-word:nth-child(n+6) { animation-delay: 0.4s; }
@keyframes hero-word-in { to { opacity: 1; transform: translateY(0); } }

/* ---- Marquee ticker strip ---- */
.marquee-strip {
    overflow: hidden;
    background: var(--ep-ink, #0f172a);
    border-radius: 0.75rem;
    padding: 0.75rem 0;
    margin: 0 0 1.5rem;
}
.marquee-track {
    display: flex;
    width: max-content;
    gap: 0.75rem;
    white-space: nowrap;
    animation: marquee-scroll 22s linear infinite;
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
}
.marquee-track span { flex-shrink: 0; }
.marquee-dot { color: var(--ep-accent, #d4a017); }
@keyframes marquee-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
    .marquee-track { animation: none; }
    .hero-word { animation: none; opacity: 1; transform: none; }
}

/* Self-contained animated illustration - no external video/image asset needed. A mock exam card
   with a filling progress ring and gently floating status badges around it. */
.hero-visual {
    position: relative;
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-mock-card {
    width: 230px;
    background: rgba(255, 255, 255, 0.97);
    border-radius: 1rem;
    padding: 1.1rem;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3);
    color: #1e293b;
    animation: hero-card-float 5s ease-in-out infinite;
    position: relative;
    z-index: 2;
}
.hero-mock-card .mock-line { height: 8px; border-radius: 4px; background: #e2e8f0; margin-bottom: 8px; }
.hero-mock-card .mock-line.w-70 { width: 70%; }
.hero-mock-card .mock-line.w-90 { width: 90%; }
.hero-mock-card .mock-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.55rem;
    border-radius: 0.5rem;
    border: 1.5px solid #e2e8f0;
    margin-top: 0.5rem;
    font-size: 0.72rem;
    font-weight: 600;
    color: #334155;
}
.hero-mock-card .mock-option .dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid #cbd5e1; flex-shrink: 0; }
.hero-mock-card .mock-option.picked { border-color: var(--ep-primary, #4f46e5); background: var(--ep-primary-light, #eef2ff); }
.hero-mock-card .mock-option.picked .dot { border-color: var(--ep-primary, #4f46e5); background: var(--ep-primary, #4f46e5); }

.hero-badge {
    position: absolute;
    background: #fff;
    border-radius: 0.75rem;
    padding: 0.5rem 0.75rem;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
    font-size: 0.78rem;
    font-weight: 700;
    color: #1e293b;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    z-index: 3;
}
.hero-badge-ring { top: 6%; right: 2%; animation: hero-badge-float 4.5s ease-in-out infinite; }
.hero-badge-check { bottom: 12%; left: 0%; animation: hero-badge-float 4s ease-in-out infinite 0.6s; color: var(--ep-success, #16a34a); }
.hero-badge-timer { top: 42%; right: -4%; animation: hero-badge-float 5.5s ease-in-out infinite 1.1s; }

.hero-progress-ring {
    width: 2rem; height: 2rem; border-radius: 50%;
    background: conic-gradient(var(--ep-primary, #4f46e5) 0deg, var(--ep-primary-light, #eef2ff) 0deg);
    animation: hero-ring-fill 3s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes hero-card-float {
    0%, 100% { transform: translateY(0) rotate(-2deg); }
    50% { transform: translateY(-14px) rotate(1deg); }
}
@keyframes hero-badge-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
@keyframes hero-ring-fill {
    0% { background: conic-gradient(var(--ep-primary, #4f46e5) 0deg, var(--ep-primary-light, #eef2ff) 0deg); }
    50% { background: conic-gradient(var(--ep-primary, #4f46e5) 280deg, var(--ep-primary-light, #eef2ff) 0deg); }
    100% { background: conic-gradient(var(--ep-primary, #4f46e5) 0deg, var(--ep-primary-light, #eef2ff) 0deg); }
}

@media (prefers-reduced-motion: reduce) {
    .hero-mock-card, .hero-badge-ring, .hero-badge-check, .hero-badge-timer, .hero-progress-ring { animation: none; }
}

.stat-badge {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 0.75rem;
    padding: 0.6rem 1.25rem;
    display: inline-block;
    min-width: 130px;
}
.stat-badge .stat-number { font-family: 'Kalam', cursive; font-weight: 700; font-size: 1.6rem; color: #f0c419; display: block; line-height: 1.2; }
.stat-badge .stat-label { font-size: 0.78rem; color: rgba(255, 255, 255, 0.75); }

.notebook-section {
    background-color: #fffdf7;
    background-image: repeating-linear-gradient(to bottom, transparent, transparent 27px, rgba(30, 58, 95, 0.08) 28px);
    border: 1px solid #f0e6cc;
    border-radius: 1rem;
    padding: 2.5rem 1.5rem;
    margin: 2rem 0;
}

.section-heading { font-family: 'Kalam', cursive; font-weight: 700; font-size: 2rem; color: #1e3a5f; text-align: center; }
.section-heading-underline { width: 90px; height: 4px; background: #d4a017; border-radius: 2px; margin: 0.4rem auto 2rem; }

.topper-card { background: #fff; border: 2px solid #f0c419; border-radius: 1rem; padding: 1.25rem 1rem; text-align: center; height: 100%; }
.topper-photo-ring { width: 90px; height: 90px; border-radius: 50%; border: 3px solid #1e3a5f; padding: 3px; margin-bottom: 0.75rem; overflow: hidden; }
.topper-score-badge { display: inline-block; background: #1e3a5f; color: #f0c419; font-weight: 700; border-radius: 2rem; padding: 0.2rem 0.9rem; font-size: 0.9rem; margin-top: 0.4rem; }

.feature-card {
    border-radius: 0.75rem;
    background: #fff;
    border: 1px solid transparent;
    box-shadow: 0 2px 10px rgba(30, 58, 95, 0.06);
    padding: 1.5rem 1rem;
    height: 100%;
    text-align: center;
    transition: transform 0.25s var(--ep-ease), box-shadow 0.25s var(--ep-ease), border-color 0.25s var(--ep-ease);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 32px rgba(30, 58, 95, 0.14);
    border-color: var(--ep-primary, #4f46e5);
}
.feature-icon { font-size: 2rem; margin-bottom: 0.5rem; transition: transform 0.25s var(--ep-ease); }
.feature-card:hover .feature-icon { transform: scale(1.15) rotate(-4deg); }

.landing-footer { text-align: center; padding: 2rem 0 1rem; color: #6c757d; font-size: 0.9rem; border-top: 1px solid #e3e6ea; margin-top: 2rem; }

/* Wide tables (Manage Exams, Student Report, Leaderboard, etc.) scroll horizontally on narrow
   screens - mobile browsers hide the scrollbar, so without this a table just looks cut off with
   no hint there's more to see. */
@media (max-width: 767.98px) {
    .table-responsive::before {
        content: "Swipe left/right to see more \2192";
        display: block;
        font-size: 0.78rem;
        color: var(--ep-muted);
        margin-bottom: 0.35rem;
    }
}

.table-responsive {
    border-radius: var(--ep-radius);
    overflow: hidden;
    background:
        linear-gradient(to right, var(--bs-body-bg, #fff) 30%, rgba(255, 255, 255, 0)),
        linear-gradient(to right, rgba(255, 255, 255, 0), var(--bs-body-bg, #fff) 70%) 100% 0,
        linear-gradient(to right, rgba(0, 0, 0, .12), rgba(255, 255, 255, 0)),
        linear-gradient(to left, rgba(0, 0, 0, .12), rgba(255, 255, 255, 0)) 100% 0;
    background-repeat: no-repeat;
    background-size: 40px 100%, 40px 100%, 14px 100%, 14px 100%;
    background-position: 0 0, 100% 0, 0 0, 100% 0;
    background-attachment: local, local, scroll, scroll;
}
.table-responsive .table { margin-bottom: 0; }

.question-card.border-warning { border-width: 2px; }
.question-card.border-success { border-width: 1px; }
.question-card.question-excluded { opacity: 0.55; background-color: #f7f7f8; }
.question-card {
    transition: box-shadow 0.2s var(--ep-ease), transform 0.2s var(--ep-ease);
}
.question-card:hover { box-shadow: var(--ep-shadow); }

.option-image { max-width: 100%; max-height: 220px; border: 1px solid var(--ep-border); border-radius: 0.4rem; padding: 0.25rem; background: #fff; }

.option-row { padding: 0.4rem 0.6rem; border-radius: 0.5rem; transition: background-color 0.15s ease; }
.option-row.option-correct { background-color: var(--ep-success-bg); font-weight: 600; }
.option-row.option-wrong { background-color: var(--ep-danger-bg); }
.input-group.option-row { padding: 0; }

.exam-header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    z-index: 5;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--ep-border);
}

.result-summary .display-5, .result-summary .display-6 { color: var(--ep-primary); font-family: 'Lexend', var(--bs-font-sans-serif); }
.result-summary.result-pass { border-top: 4px solid var(--ep-success); }
.result-summary.result-fail { border-top: 4px solid var(--ep-danger); }

.score-ring {
    width: 7rem; height: 7rem; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: conic-gradient(var(--ep-primary) calc(var(--pct, 0) * 1%), var(--ep-primary-light) 0);
    position: relative;
}
.score-ring::before {
    content: ""; position: absolute; inset: 8px; border-radius: 50%; background: var(--ep-surface);
}
.score-ring span { position: relative; z-index: 1; font-family: 'Lexend', var(--bs-font-sans-serif); }

.result-status-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 1.4rem; height: 1.4rem; border-radius: 50%; flex-shrink: 0;
    background: currentColor; font-size: 0.8rem; font-weight: 900;
}
.result-status-icon.text-success { background: var(--ep-success-bg); }
.result-status-icon.text-danger { background: var(--ep-danger-bg); }

.rank-medal { font-size: 1.3rem; }
.table-primary { --bs-table-bg: var(--ep-primary-light) !important; }

.confirm-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    animation: ep-fade-in 0.2s ease both;
    padding: 1rem;
}

.confirm-box {
    background: #fff;
    border-radius: var(--ep-radius);
    padding: 1.75rem;
    max-width: 480px;
    width: 90%;
    box-shadow: var(--ep-shadow-lg);
    animation: ep-modal-pop 0.25s var(--ep-ease) both;
}
@keyframes ep-modal-pop { from { opacity: 0; transform: scale(0.94) translateY(8px); } to { opacity: 1; transform: scale(1) translateY(0); } }

/* ---- Question palette (exam-taking) ---- */
.question-palette { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.palette-btn {
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 0.55rem;
    border: 1px solid var(--ep-border);
    background: #fff;
    color: var(--ep-ink);
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.12s var(--ep-ease), box-shadow 0.12s var(--ep-ease), background-color 0.12s ease, border-color 0.12s ease;
}
.palette-btn:hover { transform: translateY(-2px); box-shadow: var(--ep-shadow-sm); }

.palette-btn.palette-answered { background: var(--ep-success-bg); border-color: #a3cfbb; color: #0f5132; }
.palette-btn.palette-unanswered { background: var(--ep-surface-muted); border-color: var(--ep-border); color: var(--ep-muted); }
.palette-btn.palette-current {
    background: var(--ep-primary);
    border-color: var(--ep-primary);
    color: #fff;
    box-shadow: 0 0 0 3px var(--ep-primary-light);
    transform: scale(1.05);
}

.palette-legend { display: inline-block; width: 0.85rem; height: 0.85rem; border-radius: 0.25rem; vertical-align: middle; margin-right: 0.25rem; }

/* ---- Exam question surface ---- */
.exam-question-card {
    background: var(--ep-surface);
    border: 1px solid var(--ep-border);
    border-radius: var(--ep-radius-lg);
    box-shadow: var(--ep-shadow);
    padding: 1.75rem;
}
.exam-question-stem { font-size: 1.08rem; line-height: 1.6; color: var(--ep-ink); }

.exam-option {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    border: 1.5px solid var(--ep-border);
    border-radius: var(--ep-radius-sm);
    padding: 0.85rem 1rem;
    margin-bottom: 0.65rem;
    cursor: pointer;
    transition: border-color 0.15s var(--ep-ease), background-color 0.15s var(--ep-ease), transform 0.1s var(--ep-ease);
    background: var(--ep-surface);
}
.exam-option:hover { border-color: #c7d2fe; background: var(--ep-primary-light); }
.exam-option:active { transform: scale(0.995); }
.exam-option.selected { border-color: var(--ep-primary); background: var(--ep-primary-light); box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12); }
.exam-option .form-check-input { margin-top: 0.2rem; flex-shrink: 0; }
.exam-option .form-check-label { cursor: pointer; width: 100%; }

.exam-timer-badge {
    font-family: 'Lexend', var(--bs-font-sans-serif);
    font-variant-numeric: tabular-nums;
    font-size: 1.1rem;
    letter-spacing: 0.02em;
    padding: 0.45rem 0.9rem;
    border-radius: 0.6rem;
    transition: background-color 0.3s ease, color 0.3s ease;
}
.exam-timer-badge.timer-low { animation: ep-timer-pulse 1s ease-in-out infinite; }
@keyframes ep-timer-pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.5); } 50% { box-shadow: 0 0 0 6px rgba(220, 38, 38, 0); } }

.rules-list li { margin-bottom: 0.6rem; line-height: 1.5; }

.alarm-ring {
    width: 4rem; height: 4rem; border-radius: 50%;
    background: var(--ep-danger-bg);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto;
    animation: ep-timer-pulse 1s ease-in-out infinite;
}

.crop-box { background: #fff; border-radius: var(--ep-radius); padding: 1.5rem; max-width: 90vw; width: 640px; box-shadow: var(--ep-shadow-lg); }
.crop-stage { position: relative; display: inline-block; max-width: 100%; cursor: crosshair; touch-action: none; line-height: 0; }
.crop-stage img { max-width: 100%; max-height: 60vh; display: block; user-select: none; -webkit-user-drag: none; }
.crop-selection { position: absolute; border: 2px dashed #fff; box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.55); pointer-events: none; display: none; }