/* EduSpark - Glassmorphism Gradient Theme */
:root {
    --bg: #0f0a1a;
    --purple: #8b5cf6;
    --indigo: #6366f1;
    --pink: #ec4899;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --glass: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.12);
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); background: var(--bg); color: var(--text); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

.bg-gradient {
    position: fixed; inset: 0; z-index: -2;
    background: radial-gradient(ellipse at 20% 20%, rgba(99,102,241,0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 80%, rgba(139,92,246,0.12) 0%, transparent 50%),
                var(--bg);
}
.bg-orbs { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.4; }
.orb-1 { width: 400px; height: 400px; background: var(--indigo); top: -100px; right: -100px; }
.orb-2 { width: 300px; height: 300px; background: var(--purple); bottom: 20%; left: -80px; }
.orb-3 { width: 250px; height: 250px; background: var(--pink); bottom: -50px; right: 20%; opacity: 0.25; }

.glass-card {
    background: var(--glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border); border-radius: 20px;
}

.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    padding: 16px 0; background: rgba(15,10,26,0.8); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; }
.logo-icon {
    width: 36px; height: 36px; background: linear-gradient(135deg, var(--indigo), var(--purple));
    border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 0.9rem;
}
.nav { display: flex; gap: 28px; }
.nav a { font-size: 0.875rem; font-weight: 500; color: var(--text-muted); transition: 0.2s; }
.nav a:hover { color: var(--text); }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 22px; border-radius: 12px; font-weight: 600; font-size: 0.875rem;
    border: none; cursor: pointer; transition: 0.3s; font-family: var(--font-display);
}
.btn-glow {
    background: linear-gradient(135deg, var(--indigo), var(--purple));
    color: #fff; box-shadow: 0 4px 24px rgba(99,102,241,0.4);
}
.btn-glow:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(99,102,241,0.5); }
.btn-glass { background: var(--glass); border: 1px solid var(--glass-border); color: var(--text); }
.btn-glass:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.2); }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-sm { padding: 8px 18px; font-size: 0.8rem; width: 100%; margin-top: 16px; }
.btn-full { width: 100%; padding: 14px; }

.menu-btn { display: none; background: none; border: none; color: var(--text); font-size: 1.25rem; cursor: pointer; }

.hero { padding: 140px 0 80px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }

.pill {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--glass); border: 1px solid var(--glass-border);
    padding: 6px 14px; border-radius: 30px; font-size: 0.8rem; margin-bottom: 24px;
}
.dot { width: 8px; height: 8px; background: #22c55e; border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.hero h1 { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3.25rem); font-weight: 700; line-height: 1.15; margin-bottom: 20px; }
.gradient-text {
    background: linear-gradient(135deg, #a78bfa, #ec4899);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-text > p { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 32px; max-width: 480px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 36px; }

.hero-trust { display: flex; align-items: center; gap: 16px; }
.avatars { display: flex; }
.avatars span {
    width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--indigo), var(--purple));
    display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700;
    border: 2px solid var(--bg); margin-left: -10px;
}
.avatars span:first-child { margin-left: 0; }
.hero-trust p { font-size: 0.875rem; color: var(--text-muted); }

.hero-cards { position: relative; min-height: 400px; }
.card-main { padding: 28px; position: relative; z-index: 2; max-width: 340px; margin: 0 auto; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; font-size: 0.875rem; }
.badge-live { background: rgba(34,197,94,0.2); color: #22c55e; padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; }

.progress-ring { position: relative; width: 140px; height: 140px; margin: 0 auto 24px; }
.progress-ring svg { transform: rotate(-90deg); width: 100%; height: 100%; }
.ring-bg { fill: none; stroke: rgba(255,255,255,0.1); stroke-width: 8; }
.ring-fill { fill: none; stroke: url(#grad); stroke-width: 8; stroke-linecap: round; stroke-dasharray: 264; }
.progress-text { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.progress-text strong { font-family: var(--font-display); font-size: 1.75rem; }
.progress-text span { font-size: 0.75rem; color: var(--text-muted); }

.card-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; text-align: center; padding-top: 20px; border-top: 1px solid var(--glass-border); }
.card-stats strong { display: block; font-family: var(--font-display); font-size: 1.25rem; }
.card-stats span { font-size: 0.7rem; color: var(--text-muted); }

.card-float {
    position: absolute; display: flex; align-items: center; gap: 12px;
    padding: 16px 20px; animation: float 4s ease-in-out infinite;
}
.card-float i { font-size: 1.5rem; color: var(--purple); }
.card-float strong { display: block; font-size: 0.95rem; }
.card-float span { font-size: 0.75rem; color: var(--text-muted); }
.card-float:first-of-type { top: 0; right: 0; }
.card-2 { bottom: 20px; left: 0; animation-delay: 2s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.logos-strip { padding: 40px 0; border-top: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border); }
.logos-strip p { text-align: center; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 20px; }
.logos { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; }
.logos span { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); opacity: 0.7; }

.section { padding: 100px 0; }
.section-head { margin-bottom: 48px; }
.section-head.center { text-align: center; }
.tag {
    display: inline-block; background: rgba(99,102,241,0.15); color: #a78bfa;
    padding: 4px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; margin-bottom: 12px;
}
.section-head h2 { font-family: var(--font-display); font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 700; }

.program-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.program-card {
    background: var(--glass); border: 1px solid var(--glass-border); border-radius: 20px;
    padding: 32px; transition: 0.3s; position: relative;
}
.program-card:hover { transform: translateY(-6px); border-color: rgba(139,92,246,0.4); box-shadow: 0 20px 40px rgba(0,0,0,0.3); }
.program-card.featured { border-color: var(--purple); background: linear-gradient(180deg, rgba(139,92,246,0.12), var(--glass)); }
.program-badge {
    position: absolute; top: 16px; right: 16px;
    background: linear-gradient(135deg, var(--indigo), var(--purple));
    padding: 4px 12px; border-radius: 20px; font-size: 0.7rem; font-weight: 700;
}
.program-icon {
    width: 52px; height: 52px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: 20px;
}
.program-icon.purple { background: rgba(139,92,246,0.2); color: #a78bfa; }
.program-icon.indigo { background: rgba(99,102,241,0.2); color: #818cf8; }
.program-icon.pink { background: rgba(236,72,153,0.2); color: #f472b6; }
.program-card h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 10px; }
.program-card > p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; line-height: 1.6; }
.program-card ul { margin-bottom: 20px; }
.program-card ul li { font-size: 0.85rem; color: var(--text-muted); padding: 4px 0; padding-left: 18px; position: relative; }
.program-card ul li::before { content: '→'; position: absolute; left: 0; color: var(--purple); }
.program-price { font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; margin-bottom: 4px; }
.program-price span { font-size: 0.85rem; font-weight: 400; color: var(--text-muted); }

.tutor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.tutor-card { padding: 28px; text-align: center; transition: 0.3s; }
.tutor-card:hover { transform: translateY(-4px); }
.tutor-avatar {
    width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--indigo), var(--purple));
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-display); font-weight: 700; font-size: 1.25rem;
}
.tutor-card h3 { font-size: 1rem; margin-bottom: 4px; }
.tutor-sub { color: var(--purple); font-size: 0.85rem; font-weight: 600; margin-bottom: 12px; }
.tutor-desc { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 16px; line-height: 1.6; }
.tutor-tags { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.tutor-tags span { background: rgba(99,102,241,0.15); color: #a78bfa; padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; }

.features-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.features-text h2 { font-family: var(--font-display); font-size: clamp(1.75rem, 3vw, 2.25rem); margin-bottom: 16px; }
.features-text p { color: var(--text-muted); }
.features-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.feature-item { display: flex; align-items: center; gap: 16px; padding: 20px; transition: 0.2s; }
.feature-item:hover { background: rgba(255,255,255,0.08); }
.feature-item i { font-size: 1.5rem; color: var(--purple); width: 40px; }
.feature-item strong { display: block; font-size: 0.9rem; }
.feature-item span { font-size: 0.8rem; color: var(--text-muted); }

.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review { padding: 28px; }
.stars { color: #fbbf24; margin-bottom: 12px; letter-spacing: 2px; }
.review > p { color: var(--text-muted); font-style: italic; margin-bottom: 20px; line-height: 1.7; font-size: 0.9rem; }
.reviewer { display: flex; align-items: center; gap: 12px; }
.r-avatar {
    width: 40px; height: 40px; border-radius: 50%;
    background: linear-gradient(135deg, var(--indigo), var(--pink));
    display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem;
}
.reviewer strong { display: block; font-size: 0.875rem; }
.reviewer span { font-size: 0.75rem; color: var(--text-muted); }

.register-box { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; padding: 48px; align-items: center; }
.register-text h2 { font-family: var(--font-display); font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 12px; }
.register-text > p { color: var(--text-muted); margin-bottom: 24px; }
.register-perks { display: flex; flex-direction: column; gap: 8px; }
.register-perks span { font-size: 0.9rem; color: var(--text-muted); }
.register-perks i { color: #22c55e; margin-right: 8px; }

.register-form { display: flex; flex-direction: column; gap: 12px; }
.register-form input, .register-form select {
    padding: 14px 18px; background: rgba(0,0,0,0.3); border: 1px solid var(--glass-border);
    border-radius: 12px; color: var(--text); font-family: var(--font-body); font-size: 0.9rem;
}
.register-form input:focus, .register-form select:focus {
    outline: none; border-color: var(--purple); box-shadow: 0 0 0 3px rgba(139,92,246,0.2);
}
.register-form input::placeholder { color: var(--text-muted); }

.footer { padding: 48px 0; border-top: 1px solid var(--glass-border); text-align: center; }
.footer-brand { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; margin-bottom: 8px; }
.footer-brand i { color: var(--purple); margin-right: 8px; }
.footer p { color: var(--text-muted); font-size: 0.875rem; }
.footer .copy { margin-top: 16px; font-size: 0.8rem; opacity: 0.7; }
.footer a { color: #a78bfa; }

.wa-float {
    position: fixed; bottom: 24px; right: 24px; width: 54px; height: 54px;
    background: #25d366; color: #fff; border-radius: 50%;
    display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
    z-index: 99; box-shadow: 0 4px 20px rgba(37,211,102,0.4); transition: 0.2s;
}
.wa-float:hover { transform: scale(1.08); }

@media (max-width: 900px) {
    .hero-grid, .features-grid, .register-box { grid-template-columns: 1fr; }
    .program-grid, .tutor-grid, .review-grid { grid-template-columns: 1fr; }
    .hero-cards { min-height: 300px; margin-top: 40px; }
}

@media (max-width: 768px) {
    .nav {
        position: fixed; top: 68px; left: 16px; right: 16px;
        background: rgba(15,10,26,0.95); backdrop-filter: blur(16px);
        flex-direction: column; padding: 24px; border-radius: 16px;
        border: 1px solid var(--glass-border);
        transform: translateY(-150%); opacity: 0; transition: 0.3s;
    }
    .nav.active { transform: translateY(0); opacity: 1; }
    .header .btn-glow { display: none; }
    .menu-btn { display: block; }
    .features-cards { grid-template-columns: 1fr; }
    .register-box { padding: 28px; }
}