/* =========================================================
   UNITOPPER - MAIN STYLESHEET
   Matches reference design: purple/indigo primary,
   green NEET, orange SSC, dark navy header bar & footer
   ========================================================= */

:root {
    /* Brand colors (from reference design) */
    --color-primary: #6C5CE7;       /* main purple/indigo */
    --color-primary-dark: #5A4BD4;
    --color-primary-light: #EDEAFE;
    --color-neet-green: #16A34A;
    --color-neet-light: #E7F6ED;
    --color-ssc-orange: #F97316;
    --color-ssc-light: #FFF1E6;
    --color-navy: #14163A;          /* top bar + footer */
    --color-navy-light: #1C1E4D;

    --color-text: #1E1B2E;
    --color-text-muted: #6B7280;
    --color-border: #E5E7EB;
    --color-bg: #FFFFFF;
    --color-bg-soft: #FAFAFB;
    --color-gold: #FACC15;          /* premium banner accent */

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --shadow-card: 0 2px 10px rgba(20, 22, 58, 0.06);
    --shadow-card-hover: 0 8px 24px rgba(20, 22, 58, 0.10);
}

* { box-sizing: border-box; }

html, body {
    min-height: 100vh;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Roboto, -apple-system, Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Top utility bar ---------- */
.topbar {
    background: var(--color-navy);
    color: #fff;
    font-size: 13px;
}
.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 8px;
    padding-bottom: 8px;
    flex-wrap: wrap;
    gap: 6px;
}
.topbar strong { color: var(--color-gold); }
.topbar .topbar-right { display: flex; gap: 18px; }
.topbar .topbar-right span { white-space: nowrap; }

/* ---------- Main nav ---------- */
.navbar {
    background: #fff;
    border-bottom: 1px solid var(--color-border);
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    padding-bottom: 14px;
    gap: 20px;
}
.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 6px;
}
.logo .accent { color: var(--color-primary); }
.nav-links {
    display: flex;
    gap: 28px;
    font-weight: 500;
    font-size: 15px;
}
.nav-links a {
    color: var(--color-text);
    padding-bottom: 6px;
    border-bottom: 2px solid transparent;
}
.nav-links a.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}
.nav-actions { display: flex; gap: 12px; align-items: center; }
.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    color: var(--color-text);
    padding: 4px 6px;
}
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(20, 22, 58, 0.45);
    z-index: 998;
}
.nav-overlay.open { display: block; }
.nav-links-mobile-actions { display: none; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    border: none;
    white-space: nowrap;
}
.btn-outline {
    background: #fff;
    border: 1.5px solid var(--color-primary);
    color: var(--color-primary);
}
.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-block { width: 100%; }

.btn-google {
    background: #fff;
    color: #3c4043;
    border: 1.5px solid #dadce0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
    padding: 11px 16px;
}
.btn-google:hover { background: #f7f7f8; border-color: #c6c9cd; }

.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: #9ca3af;
    font-size: 13px;
    margin: 18px 0;
}
.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid #e5e7eb;
}
.auth-divider span { padding: 0 12px; }

/* ---------- Hero ---------- */
.hero {
    background: linear-gradient(180deg, #F7F6FF 0%, #FFFFFF 100%);
    padding: 56px 0 40px;
}
.hero .container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
    align-items: center;
}
.hero h1 {
    font-size: 40px;
    line-height: 1.2;
    font-weight: 800;
    margin: 0 0 16px;
}
.hero h1 .highlight { color: var(--color-primary); }
.hero p {
    font-size: 16px;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin: 0 0 28px;
    max-width: 480px;
}
.hero-actions { display: flex; gap: 14px; }
.hero-visual {
    position: relative;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    padding: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 220px;
}
.hero-visual img { max-height: 280px; }
.hero-stat-card {
    position: absolute;
    top: 14px;
    right: 8px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: 14px 16px;
    font-size: 12px;
    min-width: 140px;
    z-index: 2;
}
.hero-stat-card .progress-label { color: var(--color-text-muted); margin-bottom: 6px; }
.hero-stat-card .progress-value { font-size: 22px; font-weight: 800; color: var(--color-primary); }
.hero-mini-stats {
    position: absolute;
    bottom: 14px;
    left: 8px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: 12px 16px;
    display: flex;
    gap: 18px;
    font-size: 12px;
    z-index: 2;
}
.hero-mini-stats .num { font-weight: 800; font-size: 16px; display: block; }

/* ---------- Section heading divider ---------- */
.section-divider {
    text-align: center;
    margin: 40px 0 28px;
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    justify-content: center;
}
.section-divider::before,
.section-divider::after {
    content: '';
    height: 1px;
    width: 60px;
    background: var(--color-border);
}

/* ---------- Category cards ---------- */
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.category-card {
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-card);
}
.category-card.jee, .category-card.cat-jee { background: var(--color-primary); color: #fff; }
.category-card.neet, .category-card.cat-neet { background: var(--color-neet-green); color: #fff; }
.category-card.ssc, .category-card.cat-ssc { background: var(--color-ssc-orange); color: #fff; }
.category-card.cat-class11th-neet { background: #0F766E; color: #fff; } /* teal — distinct from JEE purple / NEET green */
/* Any future category not explicitly styled above still gets a bold,
   on-brand look instead of silently falling back to plain white. */
.category-card:not(.jee):not(.cat-jee):not(.neet):not(.cat-neet):not(.ssc):not(.cat-ssc):not(.cat-class11th-neet) {
    background: linear-gradient(135deg, #7C3AED, #4F46E5); color: #fff;
}
.category-card .cat-icon {
    width: 48px; height: 48px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    margin-bottom: 10px;
}
.category-card.jee .cat-icon, .category-card.cat-jee .cat-icon { background: rgba(255,255,255,0.2); }
.category-card.neet .cat-icon, .category-card.cat-neet .cat-icon { background: rgba(255,255,255,0.2); }
.category-card.ssc .cat-icon, .category-card.cat-ssc .cat-icon { background: rgba(255,255,255,0.2); }
.category-card.cat-class11th-neet .cat-icon { background: rgba(255,255,255,0.2); }
.category-card h3 { margin: 0 0 4px; font-size: 22px; font-weight: 800; }
.category-card p { margin: 0; font-size: 13px; opacity: 0.85; font-weight: 600; }
.category-card .explore-btn {
    border-radius: var(--radius-sm);
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
    background: #fff; color: var(--color-text);
}

/* ---------- Feature strip (icons row) ---------- */
.feature-strip {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 36px;
    text-align: center;
}
.feature-strip .feature-item {
    font-size: 13px;
    display: block;
    border-radius: var(--radius-sm);
    transition: background 0.15s, transform 0.15s;
}
.feature-strip .feature-item:hover {
    background: #fff;
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}
.feature-strip .feature-icon {
    font-size: 22px;
    color: var(--color-primary);
    margin-bottom: 8px;
}
.feature-strip strong { display: block; font-size: 13px; margin-bottom: 2px; }
.feature-strip span.sub { color: var(--color-text-muted); font-size: 12px; }

/* ---------- Dashboard grid (challenge / tests / leaderboard / material) ---------- */
.dash-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr 1.3fr 1.3fr;
    gap: 18px;
    margin-bottom: 36px;
}
.panel {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px;
}
.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}
.panel-head h4 { margin: 0; font-size: 15px; font-weight: 700; }
.panel-head a { font-size: 12px; color: var(--color-primary); font-weight: 600; }

.challenge-panel { text-align: center; }
.challenge-panel p { font-size: 13px; color: var(--color-text-muted); margin: 0 0 14px; }
.challenge-target { font-size: 40px; margin: 10px 0; }
.streak-tag {
    margin-top: 10px;
    font-size: 12px;
    color: #C2410C;
    font-weight: 600;
}

.list-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 13px;
}
.list-row:last-child { border-bottom: none; }
.list-row .row-title { font-weight: 600; }
.list-row .row-sub { color: var(--color-text-muted); font-size: 12px; }
.list-row .mini-btn {
    font-size: 12px;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1.5px solid var(--color-primary);
    color: var(--color-primary);
    background: #fff;
}

.rank-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 13px;
}
.rank-num {
    width: 22px; height: 22px;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 12px;
    flex-shrink: 0;
}
.rank-avatar {
    width: 30px; height: 30px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 800; font-size: 12px;
}
.rank-avatar img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
}
.rank-avatar.has-photo .avatar-fallback { display: none; }
.rank-name { flex: 1; font-weight: 600; }
.rank-score { font-weight: 800; color: var(--color-primary); }

.material-icon {
    width: 32px; height: 32px;
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

/* ---------- Premium banner ---------- */
.premium-banner {
    background: var(--color-navy);
    border-radius: var(--radius-lg);
    padding: 26px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    color: #fff;
    margin-bottom: 50px;
    flex-wrap: wrap;
}
.premium-banner .premium-left { display: flex; align-items: center; gap: 16px; }
.premium-crown {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.premium-banner h4 { margin: 0 0 4px; font-size: 17px; }
.premium-banner p { margin: 0; font-size: 13px; color: #C7C9E8; }
.premium-banner .premium-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.price-pill {
    border: 1.5px solid #3D3F73;
    border-radius: var(--radius-sm);
    padding: 9px 18px;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
}
.price-pill span { color: #9FA1D6; font-weight: 400; }
.btn-upgrade {
    background: var(--color-gold);
    color: #1E1B2E;
    font-weight: 700;
}

/* ---------- Footer ---------- */
.cms-page-content { line-height: 1.7; color: var(--color-text); }
.cms-page-content p { margin: 0 0 16px; }
.cms-page-content h2 { font-size: 22px; margin: 28px 0 12px; }
.cms-page-content h3 { font-size: 18px; margin: 22px 0 10px; }
.cms-page-content ul, .cms-page-content ol { margin: 0 0 16px 20px; padding: 0; }
.cms-page-content li { margin-bottom: 6px; }

.footer {
    background: var(--color-navy);
    color: #C7C9E8;
    padding: 50px 0 24px;
    font-size: 14px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}
.footer h4 { color: #fff; font-size: 14px; margin: 0 0 14px; }
.footer .logo { color: #fff; margin-bottom: 10px; }
.footer p { color: #9FA1D6; line-height: 1.5; }
.footer li { margin-bottom: 9px; }
.footer .socials { display: flex; gap: 10px; margin-top: 4px; }
.footer .socials a {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex; align-items: center; justify-content: center;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 18px;
    text-align: center;
    font-size: 13px;
    color: #8E90C4;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .hero .container { grid-template-columns: 1fr; }
    .category-grid { grid-template-columns: 1fr; }
    .feature-strip { grid-template-columns: repeat(3, 1fr); }
    .dash-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .topbar .topbar-right { gap: 10px; font-size: 11px; }

    /* Hide desktop nav links + desktop-only buttons, show hamburger */
    .nav-mobile-toggle { display: block; }
    .nav-actions-desktop-only { display: none; }

    /* Slide-in mobile drawer */
    .nav-links {
        position: fixed;
        top: 0;
        right: -300px;
        height: 100vh;
        width: 280px;
        max-width: 80vw;
        background: #fff;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        padding: 70px 24px 24px;
        box-shadow: -8px 0 30px rgba(20,22,58,0.15);
        transition: right 0.25s ease;
        z-index: 999;
        overflow-y: auto;
    }
    .nav-links.open { right: 0; }
    .nav-links a {
        width: 100%;
        padding: 12px 0;
        border-bottom: 1px solid var(--color-border);
    }
    .nav-links a.active { border-bottom-color: var(--color-primary); }
    .nav-links-mobile-actions {
        display: flex;
        flex-direction: column;
        gap: 10px;
        width: 100%;
        margin-top: 16px;
    }
}

@media (max-width: 700px) {
    .hero { padding: 36px 0 28px; }
    .hero h1 { font-size: 28px; }
    .hero-visual { padding: 50px 18px 60px; min-height: 0; }
    .hero-visual img { display: none; }
    .hero-stat-card { top: auto; right: auto; position: static; margin: 0 auto 10px; width: 100%; max-width: 220px; }
    .hero-mini-stats { position: static; margin: 0 auto; width: 100%; max-width: 280px; justify-content: center; }
    .feature-strip { grid-template-columns: repeat(2, 1fr); }
    .premium-banner { flex-direction: column; align-items: flex-start; }
    .premium-banner .premium-actions { width: 100%; justify-content: flex-start; }
    .footer-grid { grid-template-columns: 1fr; }
    .container { padding: 0 16px; }
}

/* =========================================================
   AUTH PAGES (signup / login)
   ========================================================= */
.auth-section {
    background: var(--color-bg-soft);
    padding: 56px 0;
    min-height: 60vh;
}
.auth-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 36px 40px;
    max-width: 520px;
    margin: 0 auto;
}
.auth-card-narrow { max-width: 440px; }
.auth-card h2 { margin: 0 0 6px; font-size: 26px; font-weight: 800; }
.auth-sub { color: var(--color-text-muted); margin: 0 0 26px; font-size: 14px; }

.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
}
.form-group label .optional { color: var(--color-text-muted); font-weight: 400; }
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="password"] {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.15s;
}
.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.category-select-row { display: flex; gap: 10px; flex-wrap: wrap; }
.category-radio {
    flex: 1;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    min-width: 90px;
}
.category-radio input {
    position: absolute;
    opacity: 0;
    inset: 0;
    cursor: pointer;
    margin: 0;
}
.category-radio:has(input:checked) {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}

.form-row-between {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 18px;
    font-size: 13px;
}
.link-muted { color: var(--color-text-muted); }
.link-muted:hover { color: var(--color-primary); }

.auth-footer-text {
    text-align: center;
    margin: 22px 0 0;
    font-size: 14px;
    color: var(--color-text-muted);
}
.auth-footer-text a { color: var(--color-primary); font-weight: 600; }

.alert {
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 13px;
    margin-bottom: 18px;
}
.alert ul { margin: 0; padding-left: 18px; }
.alert-error {
    background: #FEF2F2;
    border: 1px solid #FCA5A5;
    color: #B91C1C;
}
.alert-success {
    background: #F0FDF4;
    border: 1px solid #86EFAC;
    color: #15803D;
}

@media (max-width: 600px) {
    .auth-card { padding: 26px 22px; }
    .category-select-row { flex-direction: column; }
}

/* =========================================================
   DASHBOARD (Step 5)
   ========================================================= */
.dash-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 14px;
}
.dash-greeting { margin: 0 0 6px; font-size: 24px; font-weight: 800; }
.dash-sub { margin: 0; color: var(--color-text-muted); font-size: 14px; }
.premium-tag { color: var(--color-primary); font-weight: 700; }
.streak-badge {
    background: #FFF7ED;
    border: 1px solid #FED7AA;
    color: #C2410C;
    font-weight: 700;
    font-size: 13px;
    padding: 8px 16px;
    border-radius: 20px;
}

.stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}
.stat-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px;
    text-align: center;
}
.stat-icon { font-size: 22px; margin-bottom: 8px; }
.stat-value { font-size: 24px; font-weight: 800; color: var(--color-primary); }
.stat-label { font-size: 12px; color: var(--color-text-muted); margin-top: 2px; }

/* =========================================================
   CATEGORY PAGE (Step 5)
   ========================================================= */
.category-hero {
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-bottom: 36px;
    color: #fff;
}
.category-hero.jee { background: var(--color-primary); }
.category-hero.neet { background: var(--color-neet-green); }
.category-hero.ssc { background: var(--color-ssc-orange); }
.category-hero.class11th-neet { background: #0F766E; }
.category-hero:not(.jee):not(.neet):not(.ssc):not(.class11th-neet) {
    background: linear-gradient(135deg, #7C3AED, #4F46E5);
}
.category-hero h2 { margin: 0 0 8px; font-size: 28px; font-weight: 800; }
.category-hero p { margin: 0 0 20px; opacity: 0.9; }
.category-hero .btn-primary { background: #fff; color: var(--color-text); }

.section-title {
    font-size: 19px;
    font-weight: 700;
    margin: 36px 0 16px;
}
.subject-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 10px;
}
.subject-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px;
}
.subject-card h4 { margin: 0 0 10px; font-size: 15px; font-weight: 700; }
.topic-list li { margin-bottom: 8px; font-size: 13px; }
.topic-list a { color: var(--color-text-muted); }
.topic-list a:hover { color: var(--color-primary); }

.badge-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}
.badge-tag.badge-jee { background: var(--color-primary-light); color: var(--color-primary-dark); }
.badge-tag.badge-neet { background: var(--color-neet-light); color: var(--color-neet-green); }
.badge-tag.badge-ssc { background: var(--color-ssc-light); color: var(--color-ssc-orange); }
.badge-tag:not(.badge-jee):not(.badge-neet):not(.badge-ssc) { background: #EDE9FE; color: #6D28D9; }
.badge-premium {
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    background: #FEF3C7;
    color: #92400E;
}

/* =========================================================
   TESTS LISTING PAGE (Step 5)
   ========================================================= */
.filter-row {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.filter-row select {
    padding: 10px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: #fff;
    font-family: inherit;
}
.test-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.test-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px;
    display: flex;
    flex-direction: column;
}
.test-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
.test-card h4 { margin: 0 0 8px; font-size: 16px; font-weight: 700; }
.test-card-meta {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

/* =========================================================
   QUIZ START / INFO SCREEN (Step 5)
   ========================================================= */
.quiz-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin: 24px 0;
}
.quiz-info-item {
    background: var(--color-bg-soft);
    border-radius: var(--radius-sm);
    padding: 14px;
    text-align: center;
}
.quiz-info-label { font-size: 12px; color: var(--color-text-muted); margin-bottom: 4px; }
.quiz-info-value { font-size: 18px; font-weight: 800; color: var(--color-primary); }
.rules-list {
    margin: 20px 0 28px;
    padding-left: 20px;
    font-size: 13px;
    color: var(--color-text-muted);
}
.rules-list li { margin-bottom: 8px; }

@media (max-width: 900px) {
    .stat-cards { grid-template-columns: repeat(2, 1fr); }
    .subject-grid { grid-template-columns: 1fr; }
    .test-card-grid { grid-template-columns: 1fr; }
}

/* =========================================================
   QUIZ TAKING INTERFACE (Step 6)
   ========================================================= */
.quiz-body { background: var(--color-bg-soft); }

.quiz-topbar {
    background: var(--color-navy);
    color: #fff;
    padding: 14px 0;
    position: sticky;
    top: 0;
    z-index: 50;
}
.quiz-topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.quiz-title { font-weight: 700; font-size: 15px; }
.quiz-timer {
    font-size: 18px;
    font-weight: 800;
    background: rgba(255,255,255,0.1);
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    letter-spacing: 1px;
}
.quiz-timer.timer-danger { background: #DC2626; }

.quiz-layout {
    display: grid;
    grid-template-columns: 1fr 260px;
    gap: 20px;
    padding: 24px;
    align-items: start;
}
.quiz-main {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--color-border);
}
.quiz-progress { font-size: 13px; color: var(--color-text-muted); margin-bottom: 16px; font-weight: 600; }
.question-text { font-size: 16px; line-height: 1.6; margin-bottom: 22px; }

.option-list { display: flex; flex-direction: column; gap: 10px; }
.option-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    transition: border-color 0.15s, background 0.15s;
}
.option-row input[type="radio"] { width: 16px; height: 16px; accent-color: var(--color-primary); margin: 0; }
.option-row.selected {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}
.option-letter {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700;
    flex-shrink: 0;
}
.option-row.selected .option-letter { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.quiz-nav-buttons {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-top: 26px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}
.quiz-nav-buttons button:disabled { opacity: 0.4; cursor: not-allowed; }

.quiz-palette {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px;
    position: sticky;
    top: 80px;
}
.quiz-palette h4 { margin: 0 0 14px; font-size: 14px; }
.palette-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}
.palette-item {
    width: 36px; height: 36px;
    border-radius: 6px;
    border: 1.5px solid var(--color-border);
    background: #fff;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    color: var(--color-text-muted);
}
.palette-item.answered { background: #DCFCE7; border-color: #86EFAC; color: #15803D; }
.palette-item.active { border-color: var(--color-primary); border-width: 2px; color: var(--color-primary); }
.palette-legend {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 12px;
    color: var(--color-text-muted);
}
.palette-legend .dot {
    display: inline-block;
    width: 10px; height: 10px;
    border-radius: 50%;
    margin-right: 6px;
}
.dot-answered { background: #16A34A; }
.dot-unanswered { background: var(--color-border); }

@media (max-width: 900px) {
    .quiz-layout { grid-template-columns: 1fr; padding: 14px; }
    .quiz-palette { position: static; order: -1; }
    .palette-grid { grid-template-columns: repeat(8, 1fr); }
}

/* =========================================================
   RESULT & REVIEW PAGE (Step 6)
   ========================================================= */
.result-summary-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px;
    text-align: center;
    margin-bottom: 36px;
}
.result-summary-card h2 { margin: 0 0 20px; font-size: 22px; }
.result-score-circle {
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
}
.result-score-num { font-size: 48px; font-weight: 800; color: var(--color-primary); }
.result-score-total { font-size: 20px; color: var(--color-text-muted); }
.result-percent { color: var(--color-text-muted); margin: 4px 0 24px; }

.result-stat-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-bottom: 28px;
}
.result-stat-value { font-size: 20px; font-weight: 800; }
.result-stat-label { font-size: 12px; color: var(--color-text-muted); margin-top: 2px; }
.result-actions { display: flex; gap: 12px; justify-content: center; }

.review-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 16px;
}
.review-question { font-size: 14px; margin-bottom: 14px; line-height: 1.6; }
.review-option { cursor: default; position: relative; }
.option-correct { border-color: #86EFAC; background: #F0FDF4; }
.option-wrong-selected { border-color: #FCA5A5; background: #FEF2F2; }
.review-tag {
    margin-left: auto;
    font-size: 11px;
    font-weight: 700;
    color: #15803D;
    white-space: nowrap;
}
.review-tag-wrong { color: #B91C1C; }
.review-explanation {
    margin-top: 14px;
    padding: 12px 14px;
    background: var(--color-bg-soft);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--color-text-muted);
}

@media (max-width: 600px) {
    .result-stat-row { grid-template-columns: repeat(2, 1fr); }
}

/* =========================================================
   LEADERBOARD PAGE (Step 7)
   ========================================================= */
.leaderboard-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 18px;
}
.lb-tab {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    background: var(--color-bg-soft);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}
.lb-tab.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.my-rank-card {
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 14px;
    margin-bottom: 24px;
    color: var(--color-primary-dark);
}
.my-rank-muted {
    background: var(--color-bg-soft);
    border-color: var(--color-border);
    color: var(--color-text-muted);
}

.podium {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    align-items: end;
    margin-bottom: 28px;
}
.podium-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px 14px;
    text-align: center;
}
.podium-1 { padding-top: 30px; border-color: #FACC15; background: #FFFBEB; }
.podium-2 { border-color: #CBD5E1; }
.podium-3 { border-color: #FDBA74; background: #FFF7ED; }
.podium-me { box-shadow: 0 0 0 2px var(--color-primary); }
.podium-medal { font-size: 28px; margin-bottom: 8px; }
.podium-avatar {
    width: 44px; height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
    margin: 0 auto 10px;
    position: relative;
    overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 800; font-size: 16px;
}
.podium-avatar img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
}
.podium-avatar.has-photo .avatar-fallback { display: none; }
.podium-name { font-weight: 700; font-size: 14px; margin-bottom: 4px; }
.podium-score { font-weight: 800; color: var(--color-primary); font-size: 16px; }

.rank-row-me {
    background: var(--color-primary-light);
    border-radius: var(--radius-sm);
    margin: 0 -10px;
    padding: 8px 10px;
}

/* =========================================================
   TOPIC ACCURACY BARS (Step 7 - performance page)
   ========================================================= */
.topic-bar-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}
.topic-bar-row:last-child { border-bottom: none; }
.topic-bar-info { width: 220px; flex-shrink: 0; }
.topic-bar-track {
    flex: 1;
    height: 8px;
    background: var(--color-bg-soft);
    border-radius: 4px;
    overflow: hidden;
}
.topic-bar-fill { height: 100%; border-radius: 4px; }
.bar-weak { background: #DC2626; }
.bar-medium { background: #F59E0B; }
.bar-strong { background: #16A34A; }
.topic-bar-percent { width: 44px; text-align: right; font-weight: 700; font-size: 13px; flex-shrink: 0; }

@media (max-width: 700px) {
    .topic-bar-row { flex-wrap: wrap; }
    .topic-bar-info { width: 100%; }
    .topic-bar-track { flex: 1; }
}

/* =========================================================
   BADGES (Step 7)
   ========================================================= */
.badge-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}
.badge-pill {
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    color: #92400E;
    font-size: 13px;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: 20px;
}

/* =========================================================
   NOTIFICATION BELL (Step 8)
   ========================================================= */
.bell-icon {
    position: relative;
    font-size: 20px;
    display: flex;
    align-items: center;
    padding: 0 4px;
}
.bell-badge {
    position: absolute;
    top: -4px;
    right: -6px;
    background: #DC2626;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    border-radius: 10px;
    padding: 1px 5px;
    min-width: 16px;
    text-align: center;
}
.notif-row {
    display: flex;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
}
.notif-row:last-child { border-bottom: none; }
.notif-icon { font-size: 22px; flex-shrink: 0; }
.notif-time { font-size: 11px; color: var(--color-text-muted); margin-top: 4px; }

/* =========================================================
   STUDY MATERIAL PAGE (Step 8)
   ========================================================= */
.material-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.material-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px;
    text-align: center;
}
.material-card-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 14px;
}
.material-icon-lg { font-size: 32px; margin-bottom: 10px; }
.material-card h4 { margin: 0 0 8px; font-size: 15px; }
.article-body { font-size: 15px; line-height: 1.8; color: var(--color-text); }

/* =========================================================
   PRICING PAGE (Step 8)
   ========================================================= */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
    max-width: 700px;
    margin: 0 auto 50px;
}
.pricing-card {
    background: #fff;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 30px;
    position: relative;
}
.pricing-card-highlight { border-color: var(--color-primary); box-shadow: 0 8px 24px rgba(108,92,231,0.12); }
.pricing-best-tag {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--color-gold);
    color: #1E1B2E;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 12px;
}
.pricing-card h3 { margin: 0 0 10px; font-size: 17px; }
.pricing-amount { font-size: 36px; font-weight: 800; margin-bottom: 20px; }
.pricing-amount span { font-size: 14px; font-weight: 400; color: var(--color-text-muted); }
.pricing-features { list-style: none; padding: 0; margin: 0 0 24px; font-size: 13px; }
.pricing-features li { margin-bottom: 10px; color: var(--color-text-muted); }

/* =========================================================
   CHECKOUT / PAYMENT PAGE (Step 8)
   ========================================================= */
.checkout-summary {
    background: var(--color-bg-soft);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 22px;
}
.checkout-row {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    padding: 6px 0;
}
.checkout-total {
    border-top: 1px solid var(--color-border);
    margin-top: 8px;
    padding-top: 12px;
    font-weight: 800;
    font-size: 16px;
}

@media (max-width: 900px) {
    .material-card-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
}