@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* ── TerraX Brand Colors ── */
  --primary: #0E8A74;
  --primary-light: #12a98e;
  --primary-dark: #0a6b5a;
  --primary-glow: rgba(14,138,116,0.25);
  --secondary: #FB3E7A;
  --accent-orange: #E8923E;
  --accent-cyan: #1DA8D1;
  --accent-blue: #3A6DD9;
  --accent-pink: #E84080;

  /* ── Surfaces ── */
  --bg-primary: #0B1420;
  --bg-secondary: #101D2E;
  --bg-card: rgba(16, 29, 46, 0.7);
  --bg-glass: rgba(255,255,255,0.04);
  --border-glass: rgba(255,255,255,0.08);

  /* ── Text ── */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* ── Gradients (from logo colors) ── */
  --gradient-brand: linear-gradient(135deg, #E8923E, #1DA8D1, #3A6DD9, #E84080);
  --gradient-primary: linear-gradient(135deg, #0E8A74, #12a98e, #1DA8D1);
  --gradient-hero: radial-gradient(ellipse at 20% 50%, rgba(14,138,116,0.15) 0%, transparent 50%), radial-gradient(ellipse at 80% 20%, rgba(29,168,209,0.1) 0%, transparent 50%);

  --success: #22c55e;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 30px rgba(0,0,0,0.3);
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
  --max-w: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: #fff; }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ─── NAV ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(20px); background: rgba(11,20,32,0.8);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; max-width: var(--max-w); margin: 0 auto; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 1.5rem; font-weight: 800; color: #fff; }
.nav-logo img { height: 36px; width: auto; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a { color: var(--text-secondary); font-size: .9rem; font-weight: 500; }
.nav-links a:hover { color: #fff; }
.nav-actions { display: flex; gap: 12px; align-items: center; }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: 10px; font-weight: 600; font-size: .9rem; border: none; cursor: pointer; transition: var(--transition); font-family: inherit; }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-glass); }
.btn-ghost:hover { color: #fff; border-color: var(--primary); }
.btn-primary { background: var(--gradient-primary); color: #fff; box-shadow: 0 4px 20px var(--primary-glow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--primary-glow); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: 12px; }

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--text-secondary); border-radius: 2px; transition: var(--transition); }

/* ─── HERO ─── */
.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; position: relative; padding: 120px 24px 80px;
  background: var(--gradient-hero);
}
.hero::before {
  content: ''; position: absolute; top: 50%; left: 50%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, var(--primary-glow), transparent 70%);
  transform: translate(-50%, -50%); filter: blur(80px); pointer-events: none;
  animation: heroPulse 6s ease-in-out infinite;
}
@keyframes heroPulse { 0%,100% { opacity: .5; transform: translate(-50%,-50%) scale(1); } 50% { opacity: .8; transform: translate(-50%,-50%) scale(1.15); } }

.hero-logo { width: 120px; height: auto; margin-bottom: 28px; animation: fadeUp .8s ease; filter: drop-shadow(0 0 40px var(--primary-glow)); }

.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border-radius: 100px; background: var(--bg-glass); border: 1px solid var(--border-glass); font-size: .8rem; color: var(--primary-light); margin-bottom: 24px; animation: fadeUp .8s ease; }
.hero-badge::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--success); animation: blink 2s infinite; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: .3; } }

.hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 900; line-height: 1.1; margin-bottom: 20px; animation: fadeUp .8s .1s ease both; }
.hero h1 .gradient { background: var(--gradient-brand); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: clamp(1rem, 2vw, 1.25rem); color: var(--text-secondary); max-width: 640px; margin: 0 auto 36px; animation: fadeUp .8s .2s ease both; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; animation: fadeUp .8s .3s ease both; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

/* ─── TRUST BAR ─── */
.trust { padding: 60px 0; border-top: 1px solid var(--border-glass); border-bottom: 1px solid var(--border-glass); }
.trust-label { text-align: center; color: var(--text-muted); font-size: .8rem; text-transform: uppercase; letter-spacing: 3px; margin-bottom: 28px; }
.trust-logos { display: flex; justify-content: center; align-items: center; gap: 48px; flex-wrap: wrap; opacity: .5; }
.trust-logos span { font-size: 1.3rem; font-weight: 700; color: var(--text-secondary); letter-spacing: 1px; }

/* ─── SECTIONS ─── */
section { padding: 100px 0; }
.section-label { display: inline-block; padding: 4px 14px; border-radius: 100px; background: var(--primary-glow); color: var(--primary-light); font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px; }
.section-title { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; margin-bottom: 16px; }
.section-sub { color: var(--text-secondary); font-size: 1.1rem; max-width: 600px; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header .section-sub { margin: 0 auto; }

/* ─── FEATURES ─── */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.feature-card {
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius); padding: 36px; transition: var(--transition);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--gradient-primary); opacity: 0; transition: var(--transition);
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(14,138,116,0.3); box-shadow: 0 20px 60px rgba(0,0,0,0.3); }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--primary-glow); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 20px; }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-secondary); font-size: .95rem; }

/* ─── HOW IT WORKS ─── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; position: relative; }
.steps::before { content: ''; position: absolute; top: 44px; left: 15%; right: 15%; height: 2px; background: var(--border-glass); }
.step { text-align: center; position: relative; }
.step-num { width: 56px; height: 56px; border-radius: 50%; background: var(--gradient-primary); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.2rem; margin: 0 auto 20px; position: relative; z-index: 1; box-shadow: 0 0 30px var(--primary-glow); }
.step h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.step p { color: var(--text-secondary); font-size: .9rem; }

/* ─── PRICING ─── */
.pricing-toggle { display: flex; align-items: center; justify-content: center; gap: 16px; margin-bottom: 48px; }
.pricing-toggle span { font-size: .95rem; color: var(--text-secondary); }
.pricing-toggle span.active { color: #fff; font-weight: 600; }
.toggle-switch { width: 52px; height: 28px; border-radius: 100px; background: var(--bg-glass); border: 1px solid var(--border-glass); cursor: pointer; position: relative; transition: var(--transition); }
.toggle-switch::after { content: ''; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--primary); transition: var(--transition); }
.toggle-switch.annual::after { left: 27px; }
.toggle-switch.annual { background: var(--primary-glow); border-color: var(--primary); }
.save-badge { background: var(--success); color: #000; font-size: .7rem; font-weight: 700; padding: 2px 8px; border-radius: 100px; }

.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; align-items: start; }
.pricing-card {
  background: var(--bg-glass); border: 1px solid var(--border-glass);
  border-radius: var(--radius); padding: 40px 32px; transition: var(--transition);
  position: relative;
}
.pricing-card.popular { border-color: var(--primary); transform: scale(1.04); box-shadow: 0 0 60px var(--primary-glow); }
.pricing-card.popular .popular-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--gradient-primary); color: #fff; font-size: .75rem; font-weight: 700; padding: 4px 20px; border-radius: 100px; white-space: nowrap; }
.pricing-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.pricing-card .price { font-size: 3rem; font-weight: 900; margin: 16px 0 4px; }
.pricing-card .price span { font-size: 1rem; font-weight: 400; color: var(--text-secondary); }
.pricing-card .price-sub { color: var(--text-muted); font-size: .85rem; margin-bottom: 28px; }
.pricing-card .btn { width: 100%; justify-content: center; margin-bottom: 28px; }
.pricing-features { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.pricing-features li { display: flex; align-items: center; gap: 10px; font-size: .9rem; color: var(--text-secondary); }
.pricing-features li::before { content: '✓'; color: var(--primary-light); font-weight: 700; font-size: .85rem; flex-shrink: 0; }
.pricing-features li.disabled { opacity: .35; }
.pricing-features li.disabled::before { content: '—'; color: var(--text-muted); }

/* ─── TESTIMONIALS ─── */
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 24px; }
.testimonial-card { background: var(--bg-glass); border: 1px solid var(--border-glass); border-radius: var(--radius); padding: 32px; }
.testimonial-card .stars { color: #facc15; margin-bottom: 16px; letter-spacing: 2px; }
.testimonial-card blockquote { font-size: 1rem; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.7; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--gradient-primary); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .9rem; }
.testimonial-author .name { font-weight: 600; font-size: .9rem; }
.testimonial-author .role { color: var(--text-muted); font-size: .8rem; }

/* ─── FAQ ─── */
.faq-list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-sm); overflow: hidden; }
.faq-question { width: 100%; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; background: none; border: none; color: var(--text-primary); font-size: 1rem; font-weight: 600; cursor: pointer; font-family: inherit; text-align: left; }
.faq-question .icon { transition: var(--transition); color: var(--primary-light); font-size: 1.2rem; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-answer-inner { padding: 0 24px 20px; color: var(--text-secondary); font-size: .95rem; line-height: 1.7; }

/* ─── CTA ─── */
.cta-section {
  text-align: center; padding: 100px 24px;
  background: var(--gradient-hero); position: relative;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at center, var(--primary-glow), transparent 60%);
  filter: blur(60px); pointer-events: none;
}
.cta-section h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; margin-bottom: 16px; position: relative; }
.cta-section p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 36px; position: relative; }
.cta-section .hero-actions { position: relative; }

/* ─── FOOTER ─── */
.footer { padding: 60px 0 30px; border-top: 1px solid var(--border-glass); }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 40px; }
.footer-brand p { color: var(--text-muted); font-size: .85rem; max-width: 260px; margin-top: 12px; }
.footer-brand .nav-logo img { height: 32px; }
.footer h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: 2px; color: var(--text-muted); margin-bottom: 16px; }
.footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer ul a { color: var(--text-secondary); font-size: .9rem; }
.footer ul a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid var(--border-glass); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; color: var(--text-muted); font-size: .8rem; }

/* ─── SCROLL REVEAL ─── */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .pricing-card.popular { transform: none; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
  .steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--bg-secondary); padding: 24px; gap: 16px; border-bottom: 1px solid var(--border-glass); }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .nav-actions .btn-ghost { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}