/* KeyAnswer — Public Site Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-card: #1a1a3e;
    --bg-glass: rgba(26, 26, 62, 0.7);
    --text-primary: #e8e8f0;
    --text-secondary: #8b8fa3;
    --text-muted: #5a5e73;
    --accent-green: #00d68f;
    --accent-green-glow: rgba(0, 214, 143, 0.3);
    --accent-blue: #3b82f6;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;
    --border-color: rgba(255,255,255,0.08);
    --border-glow: rgba(0, 214, 143, 0.2);
    --radius: 12px;
    --radius-lg: 16px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-green); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-blue); }

img { max-width: 100%; height: auto; }

/* === NAVBAR === */
.navbar {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(10, 10, 26, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
}
.navbar-inner {
    max-width: 1200px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
}
.navbar-brand {
    font-size: 1.5rem; font-weight: 800;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.navbar-links { display: flex; gap: 8px; list-style: none; }
.navbar-links a {
    padding: 8px 16px; border-radius: 8px;
    color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
    transition: var(--transition);
}
.navbar-links a:hover, .navbar-links a.active {
    color: var(--text-primary); background: var(--bg-card);
}
.menu-toggle {
    display: none; background: none; border: none; color: var(--text-primary);
    font-size: 1.5rem; cursor: pointer;
}

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

/* === HERO === */
.hero {
    text-align: center; padding: 60px 24px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(0,214,143,0.05) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(59,130,246,0.05) 0%, transparent 50%);
    animation: heroGlow 8s ease-in-out infinite alternate;
}
@keyframes heroGlow {
    0% { transform: translate(0,0); }
    100% { transform: translate(-2%,-2%); }
}
.hero h1 {
    font-size: 2.5rem; font-weight: 900; position: relative;
    background: linear-gradient(135deg, #fff 0%, var(--accent-green) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin-bottom: 12px;
}
.hero p { color: var(--text-secondary); font-size: 1.1rem; position: relative; }

/* === ANNOUNCEMENT BANNER === */
.announcement {
    background: linear-gradient(90deg, var(--accent-amber), #e67e22);
    color: #000; text-align: center; padding: 10px 24px;
    font-weight: 600; font-size: 0.9rem;
    animation: slideIn 0.5s ease;
}
@keyframes slideIn { from { transform: translateY(-100%); } to { transform: translateY(0); } }

/* === PIN BOX === */
.pin-section {
    max-width: 500px; margin: -30px auto 40px; position: relative; z-index: 10;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-lg);
    padding: 32px; text-align: center;
    box-shadow: 0 0 40px var(--accent-green-glow);
    animation: pinPulse 3s ease-in-out infinite;
}
@keyframes pinPulse {
    0%, 100% { box-shadow: 0 0 40px var(--accent-green-glow); }
    50% { box-shadow: 0 0 60px var(--accent-green-glow), 0 0 80px rgba(0,214,143,0.1); }
}
.pin-section h2 { font-size: 1.3rem; margin-bottom: 16px; }
.pin-form { display: flex; gap: 10px; margin-bottom: 16px; }
.pin-input {
    flex: 1; padding: 14px 18px; border-radius: var(--radius);
    border: 2px solid var(--border-color); background: var(--bg-primary);
    color: var(--text-primary); font-size: 1.1rem; font-weight: 700;
    text-align: center; letter-spacing: 4px;
    transition: var(--transition);
}
.pin-input:focus { outline: none; border-color: var(--accent-green); }
.pin-input::placeholder { letter-spacing: 1px; font-weight: 400; color: var(--text-muted); }

/* === BUTTONS === */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 24px; border-radius: var(--radius);
    font-weight: 600; font-size: 0.95rem; border: none;
    cursor: pointer; transition: var(--transition);
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-green), #00b377);
    color: #000;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px var(--accent-green-glow); }
.btn-whatsapp { background: #25D366; color: #fff; }
.btn-whatsapp:hover { background: #1da851; transform: translateY(-2px); }
.btn-outline {
    background: transparent; border: 1px solid var(--border-color);
    color: var(--text-primary);
}
.btn-outline:hover { border-color: var(--accent-green); color: var(--accent-green); }

.previous-pins { color: var(--text-muted); font-size: 0.85rem; margin-top: 8px; }
.previous-pins span { color: var(--accent-green); font-weight: 600; }

/* === PIN RESULT === */
.pin-result { margin-top: 12px; padding: 10px; border-radius: 8px; display: none; font-weight: 500; }
.pin-result.success { display: block; background: rgba(0,214,143,0.15); color: var(--accent-green); }
.pin-result.error { display: block; background: rgba(239,68,68,0.15); color: var(--accent-red); }

/* === CTA SECTION === */
.cta-section {
    text-align: center; padding: 40px 24px;
    background: var(--bg-secondary); border-radius: var(--radius-lg);
    margin: 40px auto; max-width: 700px;
    border: 1px solid var(--border-color);
}
.cta-section h3 { font-size: 1.3rem; margin-bottom: 8px; }
.cta-section p { color: var(--text-secondary); margin-bottom: 20px; }

/* === EXAM BODY GRID === */
.section-title {
    font-size: 1.5rem; font-weight: 700; margin: 40px 0 24px;
    text-align: center;
}
.exam-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px; margin-bottom: 40px;
}
.exam-card {
    background: var(--bg-glass); backdrop-filter: blur(10px);
    border: 1px solid var(--border-color); border-radius: var(--radius);
    padding: 24px; text-align: center;
    transition: var(--transition); cursor: pointer;
}
.exam-card:hover {
    transform: translateY(-4px); border-color: var(--accent-green);
    box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}
.exam-card .icon { font-size: 2.5rem; margin-bottom: 12px; display: block; }
.exam-card .name { font-weight: 700; font-size: 1.1rem; margin-bottom: 4px; }
.exam-card .full-name { font-size: 0.75rem; color: var(--text-muted); }

/* === ANSWERS PAGE === */
.subject-list { display: flex; flex-direction: column; gap: 12px; }
.subject-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px 20px; background: var(--bg-card);
    border: 1px solid var(--border-color); border-radius: var(--radius);
    transition: var(--transition);
}
.subject-item:hover { border-color: var(--accent-green); transform: translateX(4px); }
.subject-item .name { font-weight: 600; }
.badge {
    padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600;
}
.badge-live { background: rgba(0,214,143,0.15); color: var(--accent-green); }
.badge-soon { background: rgba(245,158,11,0.15); color: var(--accent-amber); }
.badge-expired { background: rgba(239,68,68,0.15); color: var(--accent-red); }

/* === ANSWERS GRID === */
.answers-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: 8px; margin: 20px 0;
}
.answer-item {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 8px; padding: 10px; text-align: center;
    display: flex; align-items: center; justify-content: center; gap: 4px;
}
.answer-num { color: var(--text-muted); font-size: 0.85rem; }
.answer-letter { font-weight: 700; color: var(--accent-green); font-size: 1.1rem; }
.theory-content {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 24px; margin: 20px 0;
    line-height: 1.8;
}

/* === TIMETABLE === */
.timetable-table {
    width: 100%; border-collapse: collapse; margin: 20px 0;
}
.timetable-table th {
    background: var(--bg-card); padding: 12px 16px;
    text-align: left; font-weight: 600; font-size: 0.85rem;
    color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
}
.timetable-table td {
    padding: 12px 16px; border-bottom: 1px solid var(--border-color);
}
.timetable-table tr:hover { background: var(--bg-card); }
.timetable-table .today { background: rgba(0,214,143,0.08); }
.timetable-table .today td:first-child {
    border-left: 3px solid var(--accent-green);
}
.timetable-table .past { opacity: 0.5; }

/* === PROOFS GALLERY === */
.proofs-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px; margin: 20px 0;
}
.proof-card {
    border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition); cursor: pointer;
}
.proof-card:hover { transform: scale(1.02); border-color: var(--accent-green); }
.proof-card img { width: 100%; height: 200px; object-fit: cover; }
.proof-card .caption {
    padding: 12px; background: var(--bg-card);
    font-size: 0.85rem; color: var(--text-secondary);
}

/* === PRICING === */
.pricing-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px; margin: 40px 0;
}
.pricing-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); padding: 32px; text-align: center;
    position: relative; transition: var(--transition);
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.pricing-card.popular {
    border-color: var(--accent-green);
    box-shadow: 0 0 40px var(--accent-green-glow);
}
.pricing-card.popular::before {
    content: '🔥 MOST POPULAR';
    position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    background: var(--accent-green); color: #000;
    padding: 4px 16px; border-radius: 20px;
    font-size: 0.75rem; font-weight: 700;
}
.pricing-card .tier-name { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.pricing-card .price {
    font-size: 2.5rem; font-weight: 900;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin: 16px 0;
}
.pricing-card .price small { font-size: 0.5em; }
.pricing-card .features { list-style: none; margin: 20px 0; text-align: left; }
.pricing-card .features li {
    padding: 8px 0; border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem; color: var(--text-secondary);
}
.pricing-card .features li::before {
    content: '✅ '; margin-right: 4px;
}

/* === PAST QUESTIONS === */
.pq-list { display: flex; flex-direction: column; gap: 16px; }
.pq-card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius); padding: 20px;
    transition: var(--transition);
}
.pq-card:hover { border-color: var(--accent-blue); transform: translateX(4px); }
.pq-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.pq-card h3 a { color: var(--text-primary); }
.pq-card h3 a:hover { color: var(--accent-green); }
.pq-card .meta {
    display: flex; gap: 16px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px;
}
.pq-card .excerpt { color: var(--text-secondary); font-size: 0.9rem; }

/* === BREADCRUMBS === */
.breadcrumbs {
    display: flex; gap: 8px; align-items: center;
    font-size: 0.85rem; color: var(--text-muted);
    padding: 16px 0; flex-wrap: wrap;
}
.breadcrumbs a { color: var(--text-secondary); }
.breadcrumbs a:hover { color: var(--accent-green); }
.breadcrumbs span { color: var(--text-muted); }

/* === PAGE HEADER === */
.page-header {
    padding: 40px 0 20px; border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}
.page-header h1 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.page-header p { color: var(--text-secondary); }

/* === FILTER TABS === */
.filter-tabs {
    display: flex; gap: 8px; flex-wrap: wrap;
    padding: 16px 0; margin-bottom: 20px;
}
.filter-tab {
    padding: 8px 16px; border-radius: 20px; font-size: 0.85rem;
    background: var(--bg-card); border: 1px solid var(--border-color);
    color: var(--text-secondary); cursor: pointer; transition: var(--transition);
    text-decoration: none;
}
.filter-tab:hover, .filter-tab.active {
    background: var(--accent-green); color: #000; border-color: var(--accent-green);
}

/* === LIGHTBOX === */
.lightbox-overlay {
    display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.9); z-index: 9999;
    justify-content: center; align-items: center;
}
.lightbox-overlay.active { display: flex; }
.lightbox-overlay img { max-width: 90%; max-height: 90%; border-radius: 8px; }
.lightbox-close {
    position: absolute; top: 20px; right: 30px;
    font-size: 2rem; color: #fff; cursor: pointer; background: none; border: none;
}

/* === WHATSAPP FLOAT === */
.whatsapp-float {
    position: fixed; bottom: 24px; right: 24px; z-index: 999;
    width: 60px; height: 60px; border-radius: 50%;
    background: #25D366; color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem; box-shadow: 0 4px 16px rgba(37,211,102,0.4);
    animation: waBounce 2s ease-in-out infinite;
    text-decoration: none;
}
@keyframes waBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
.whatsapp-float:hover { transform: scale(1.1); color: #fff; }

/* === FOOTER === */
.footer {
    background: var(--bg-secondary); border-top: 1px solid var(--border-color);
    padding: 40px 24px; margin-top: 60px; text-align: center;
}
.footer p { color: var(--text-muted); font-size: 0.85rem; }
.footer-links { display: flex; gap: 20px; justify-content: center; margin-bottom: 16px; }
.footer-links a { color: var(--text-secondary); font-size: 0.9rem; }
.footer-links a:hover { color: var(--accent-green); }

/* === SCROLL TO TOP === */
.scroll-top {
    position: fixed; bottom: 100px; right: 28px; z-index: 998;
    width: 40px; height: 40px; border-radius: 50%;
    background: var(--bg-card); border: 1px solid var(--border-color);
    color: var(--text-primary); font-size: 1.2rem;
    display: none; align-items: center; justify-content: center;
    cursor: pointer; transition: var(--transition);
}
.scroll-top.visible { display: flex; }
.scroll-top:hover { background: var(--accent-green); color: #000; }

/* === LOADING SPINNER === */
.spinner {
    display: inline-block; width: 20px; height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-green);
    border-radius: 50%; animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .navbar-links { display: none; }
    .navbar-links.open {
        display: flex; flex-direction: column;
        position: absolute; top: 64px; left: 0; right: 0;
        background: var(--bg-primary); border-bottom: 1px solid var(--border-color);
        padding: 16px;
    }
    .menu-toggle { display: block; }
    .hero h1 { font-size: 1.8rem; }
    .exam-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: 1fr; }
    .pin-form { flex-direction: column; }
    .timetable-table { font-size: 0.85rem; }
    .timetable-table th, .timetable-table td { padding: 8px 10px; }
}

@media (max-width: 480px) {
    .exam-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .exam-card { padding: 16px; }
    .exam-card .icon { font-size: 2rem; }
    .hero { padding: 40px 16px; }
    .pin-section { margin: -20px 12px 30px; padding: 24px; }
}