/* === VARIABLES === */
:root {
  --bg: #0a0e1a;
  --bg-alt: #0f1424;
  --bg-card: #151a2e;
  --bg-card-hover: #1a2038;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-dark: #d97706;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --text-bright: #ffffff;
  --border: #1e293b;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
}

/* === RESET === */
*, *::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);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* === LAYOUT === */
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* === NAV === */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 14, 26, 0.85); backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { text-decoration: none; font-size: 1.25rem; font-weight: 800; color: var(--text-bright); display: flex; align-items: center; gap: 8px; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: var(--text-dim); text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: color var(--transition); }
.nav-links a:hover { color: var(--text-bright); }
.mobile-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* === BUTTONS === */
.btn {
  display: inline-block; padding: 12px 28px; background: var(--accent); color: #000;
  font-weight: 700; font-size: 0.95rem; border-radius: var(--radius-sm); text-decoration: none;
  border: 2px solid var(--accent); cursor: pointer; transition: all var(--transition);
}
.btn:hover { background: var(--accent-light); border-color: var(--accent-light); transform: translateY(-1px); }
.btn-lg { padding: 16px 36px; font-size: 1.1rem; border-radius: var(--radius); }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.btn-outline { background: transparent; color: var(--accent); }
.btn-outline:hover { background: var(--accent); color: #000; }

/* === HERO === */
.hero { padding: 160px 0 100px; text-align: center; background: radial-gradient(ellipse at 50% 0%, rgba(245,158,11,0.08) 0%, transparent 60%); }
.hero-badge {
  display: inline-block; padding: 6px 16px; background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.2); border-radius: 100px;
  font-size: 0.85rem; color: var(--accent); margin-bottom: 24px;
}
.hero h1 { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 900; line-height: 1.1; color: var(--text-bright); margin-bottom: 20px; }
.accent { color: var(--accent); }
.hero-sub { max-width: 640px; margin: 0 auto 36px; font-size: 1.15rem; color: var(--text-dim); line-height: 1.7; }
.hero-proof { display: flex; justify-content: center; align-items: center; gap: 24px; margin-top: 48px; }
.proof-item { text-align: center; }
.proof-item strong { display: block; font-size: 1.5rem; color: var(--accent); }
.proof-sep { width: 1px; height: 32px; background: var(--border); }

/* === PROBLEM === */
.problem { padding: 100px 0; }
.problem h2, .how-it-works h2, .features h2, .pricing h2, .faq h2, .quiz h2, .final-cta h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 800; text-align: center; color: var(--text-bright); margin-bottom: 16px;
}
.section-sub { text-align: center; color: var(--text-dim); max-width: 600px; margin: 0 auto 48px; font-size: 1.05rem; }
.problem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-bottom: 48px; }
.problem-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; transition: border-color var(--transition);
}
.problem-card:hover { border-color: rgba(245,158,11,0.3); }
.problem-icon { font-size: 2rem; margin-bottom: 12px; }
.problem-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-bright); margin-bottom: 8px; }
.problem-card p { color: var(--text-dim); font-size: 0.95rem; }
.problem-stats { display: flex; flex-wrap: wrap; justify-content: center; gap: 32px; margin-bottom: 32px; }
.stat { text-align: center; }
.stat-num { display: block; font-size: 1.75rem; font-weight: 800; color: var(--accent); }
.problem-punchline { text-align: center; font-size: 1.15rem; color: var(--text-dim); }
.problem-punchline strong { color: var(--text-bright); }

/* === HOW IT WORKS === */
.how-it-works { padding: 100px 0; background: var(--bg-alt); }
.steps { display: flex; align-items: flex-start; justify-content: center; gap: 16px; flex-wrap: wrap; }
.step {
  flex: 1; min-width: 240px; max-width: 300px; text-align: center;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 24px;
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 50%; background: var(--accent);
  color: #000; font-weight: 800; font-size: 1.25rem; margin-bottom: 16px;
}
.step h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-bright); margin-bottom: 8px; }
.step p { color: var(--text-dim); font-size: 0.9rem; }
.step-arrow { font-size: 1.5rem; color: var(--accent); margin-top: 48px; }

/* === FEATURES === */
.features { padding: 100px 0; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: border-color var(--transition), transform var(--transition);
}
.feature-card:hover { border-color: rgba(245,158,11,0.3); transform: translateY(-2px); }
.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1rem; font-weight: 700; color: var(--text-bright); margin-bottom: 8px; }
.feature-card p { color: var(--text-dim); font-size: 0.9rem; }

/* === PRICING === */
.pricing { padding: 100px 0; background: var(--bg-alt); }
.billing-toggle { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 48px; }
.toggle-label { font-size: 0.9rem; color: var(--text-dim); cursor: pointer; }
.toggle-label[data-period="annual"] { display: flex; align-items: center; gap: 8px; }
.save-badge { background: var(--accent); color: #000; font-size: 0.7rem; font-weight: 700; padding: 2px 8px; border-radius: 100px; }
.toggle-switch { position: relative; width: 48px; height: 26px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0; background: var(--border); border-radius: 26px; cursor: pointer; transition: var(--transition);
}
.toggle-slider::before {
  content: ''; position: absolute; width: 20px; height: 20px; border-radius: 50%;
  left: 3px; top: 3px; background: var(--text-bright); transition: var(--transition);
}
.toggle-switch input:checked + .toggle-slider { background: var(--accent); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(22px); }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; align-items: start; }
.price-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px; position: relative;
}
.price-card.popular { border-color: var(--accent); }
.popular-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #000; font-size: 0.75rem; font-weight: 700;
  padding: 4px 16px; border-radius: 100px;
}
.price-tier { font-size: 1.1rem; font-weight: 700; color: var(--text-bright); margin-bottom: 8px; }
.price-amount { margin-bottom: 8px; }
.currency { font-size: 1.25rem; font-weight: 700; color: var(--text-bright); vertical-align: top; }
.price-num { font-size: 3rem; font-weight: 900; color: var(--text-bright); line-height: 1; }
.price-period { color: var(--text-dim); font-size: 0.9rem; }
.price-desc { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 24px; }
.price-card ul { list-style: none; margin-bottom: 28px; }
.price-card li { padding: 6px 0; font-size: 0.9rem; color: var(--text-dim); }
.price-card .btn { display: block; text-align: center; }
.pricing-note { text-align: center; color: var(--text-dim); font-size: 0.85rem; margin-top: 32px; }

/* === FAQ === */
.faq { padding: 100px 0; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%; text-align: left; padding: 20px 0; background: none; border: none;
  color: var(--text-bright); font-size: 1rem; font-weight: 600; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; font-family: inherit;
}
.faq-q::after { content: '+'; font-size: 1.25rem; color: var(--accent); transition: transform var(--transition); }
.faq-item.open .faq-q::after { content: '−'; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item.open .faq-a { max-height: 300px; }
.faq-a p { padding-bottom: 20px; color: var(--text-dim); font-size: 0.95rem; line-height: 1.7; }

/* === QUIZ === */
.quiz { padding: 100px 0; background: var(--bg-alt); }
.quiz-container { max-width: 560px; margin: 0 auto; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 40px; }
.quiz-progress { height: 4px; background: var(--border); border-radius: 4px; margin-bottom: 32px; }
.quiz-progress-bar { height: 100%; background: var(--accent); border-radius: 4px; width: 33.33%; transition: width 0.4s ease; }
.quiz-step { display: none; }
.quiz-step.active { display: block; }
.quiz-step h3 { font-size: 1.25rem; font-weight: 700; color: var(--text-bright); margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-group input, .form-group select {
  width: 100%; padding: 12px 16px; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-bright); font-size: 0.95rem;
  font-family: inherit; transition: border-color var(--transition);
}
.form-group input::placeholder { color: var(--text-dim); }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--accent); }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg); }
.checkbox-group { display: flex; flex-wrap: wrap; gap: 12px; }
.checkbox-label {
  display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--text-dim);
  cursor: pointer; padding: 8px 14px; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); transition: all var(--transition);
}
.checkbox-label:has(input:checked) { border-color: var(--accent); color: var(--text-bright); background: rgba(245,158,11,0.05); }
.checkbox-label input { accent-color: var(--accent); }
.quiz-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 8px; }

/* === FINAL CTA === */
.final-cta { padding: 100px 0; text-align: center; background: radial-gradient(ellipse at 50% 100%, rgba(245,158,11,0.08) 0%, transparent 60%); }
.final-cta p { max-width: 560px; margin: 0 auto 32px; color: var(--text-dim); font-size: 1.05rem; }

/* === FOOTER === */
.footer { padding: 32px 0; border-top: 1px solid var(--border); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-brand { font-weight: 800; font-size: 1.1rem; color: var(--text-bright); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-dim); text-decoration: none; font-size: 0.85rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--text-bright); }
.footer-copy { color: var(--text-dim); font-size: 0.8rem; }

/* === MOBILE === */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0;
    background: rgba(10, 14, 26, 0.95); backdrop-filter: blur(16px); padding: 24px;
    border-bottom: 1px solid var(--border); gap: 16px;
  }
  .mobile-toggle { display: block; }
  .hero { padding: 120px 0 80px; }
  .hero-proof { flex-direction: column; gap: 16px; }
  .proof-sep { width: 48px; height: 1px; }
  .steps { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); margin: 0; }
  .pricing-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
}

/* Testimonials */
.testimonials { padding: 80px 0; background: var(--bg); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.testimonial-card { background: var(--card-bg, #1a1a2e); border: 1px solid rgba(255,255,255,0.08); border-radius: 16px; padding: 32px; }
.testimonial-stars { font-size: 14px; margin-bottom: 12px; }
.testimonial-quote { font-size: 1rem; line-height: 1.7; color: var(--text-secondary, #b0b0c0); margin-bottom: 20px; font-style: italic; }
.testimonial-author strong { display: block; color: var(--text, #fff); }
.testimonial-author span { font-size: 0.85rem; color: var(--text-secondary, #888); }
@media (max-width: 768px) { .testimonials-grid { grid-template-columns: 1fr; } }