/* ─────────────────────────────────────────────
 * BlueForge Landing Page — Design System
 * Theme: Calm Dark Teal Futurism
 * ───────────────────────────────────────────── */

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

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

:root {
  /* Base */
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-surface: #111111;
  --bg-surface-hover: #181818;
  --bg-sidebar: #080808;
  --border-subtle: rgba(255,255,255,0.06);
  --border-default: rgba(255,255,255,0.10);

  /* Accent */
  --accent: #2dd4bf;
  --accent-hover: #5eead4;
  --accent-glow: rgba(45,212,191,0.08);
  --accent-glow-strong: rgba(45,212,191,0.15);

  /* Text */
  --text-primary: #e8eaed;
  --text-secondary: #8b95a5;
  --text-tertiary: #5a6270;

  /* Status */
  --status-success: #34d399;
  --status-warning: #d4a04e;
  --status-error: #e05252;

  /* Spacing */
  --section-padding: 120px;
  --container-max: 1200px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 9999px;

  /* Shadow */
  --shadow-card: 0 2px 12px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 30px rgba(45,212,191,0.12);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
}
.btn-primary {
  background: var(--accent);
  color: #0b0d11;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.btn-ghost {
  border: 1px solid var(--border-default);
  color: var(--text-primary);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}
.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

/* ── Section shared ── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

/* ── Scroll reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════
   NAV
   ══════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.nav.scrolled {
  background: rgba(11,13,17,0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border-subtle);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-logo svg { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text-primary); }
.nav-cta { margin-left: 8px; }

/* ══════════════════════════════════════
   HERO
   ══════════════════════════════════════ */
.hero {
  padding: 160px 0 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(45,212,191,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.hero-title .accent { color: var(--accent); }
.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 64px;
}
.hero-screenshot {
  max-width: 960px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), var(--shadow-glow);
  overflow: hidden;
  background: var(--bg-surface);
}
.hero-screenshot img {
  width: 100%;
  display: block;
}

/* ══════════════════════════════════════
   PAIN POINTS
   ══════════════════════════════════════ */
.pain {
  padding: var(--section-padding) 0;
}
.pain .container { text-align: center; }
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.pain-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: left;
}
.pain-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(224,82,82,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--status-error);
}
.pain-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}
.pain-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ══════════════════════════════════════
   FEATURES
   ══════════════════════════════════════ */
.features {
  padding: var(--section-padding) 0;
}
.features .container { text-align: center; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: left;
  transition: all 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(45,212,191,0.2);
  box-shadow: var(--shadow-glow);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ══════════════════════════════════════
   HOW IT WORKS
   ══════════════════════════════════════ */
.how {
  padding: var(--section-padding) 0;
}
.how .container { text-align: center; }
.how-steps {
  display: flex;
  gap: 32px;
  margin-top: 56px;
  position: relative;
}
.how-step {
  flex: 1;
  text-align: center;
  position: relative;
}
.how-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-glow-strong);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}
.how-step h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}
.how-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 280px;
  margin: 0 auto;
}
.how-connector {
  position: absolute;
  top: 28px;
  left: calc(33.33% + 28px);
  width: calc(33.33% - 56px);
  height: 2px;
  background: var(--border-default);
}
.how-connector:nth-of-type(2) {
  left: calc(66.66% + 28px);
}

/* ══════════════════════════════════════
   COMPARISON
   ══════════════════════════════════════ */
.compare {
  padding: var(--section-padding) 0;
}
.compare .container { text-align: center; }
.compare-table {
  margin-top: 48px;
  overflow-x: auto;
}
.compare-table table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  text-align: center;
  font-size: 14px;
}
.compare-table th {
  padding: 16px 12px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13px;
}
.compare-table th:last-child {
  color: var(--accent);
  font-size: 14px;
}
.compare-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}
.compare-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--text-primary);
}
.compare-table td:last-child {
  color: var(--accent);
  font-weight: 600;
}
.compare-table tr:last-child td { border-bottom: none; }
.check { color: var(--status-success); }
.cross { color: var(--text-tertiary); }

/* ══════════════════════════════════════
   PRICING
   ══════════════════════════════════════ */
.pricing {
  padding: var(--section-padding) 0;
}
.pricing .container { text-align: center; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  align-items: start;
}
.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  text-align: left;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 40px rgba(45,212,191,0.08);
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #0b0d11;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}
.pricing-name {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
}
.pricing-price {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 4px;
}
.pricing-price span {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
}
.pricing-desc {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}
.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}
.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}
.pricing-features svg { color: var(--accent); flex-shrink: 0; }
.pricing-card .btn { width: 100%; justify-content: center; }

/* ══════════════════════════════════════
   FINAL CTA
   ══════════════════════════════════════ */
.cta {
  padding: var(--section-padding) 0;
  text-align: center;
}
.cta-inner {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 64px 48px;
  position: relative;
  overflow: hidden;
}
.cta-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(circle, rgba(45,212,191,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.cta h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
}
.cta p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  position: relative;
}
.cta-form {
  display: flex;
  gap: 12px;
  max-width: 440px;
  margin: 0 auto;
  position: relative;
}
.cta-input {
  flex: 1;
  padding: 14px 18px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.cta-input::placeholder { color: var(--text-tertiary); }
.cta-input:focus { border-color: var(--accent); }

/* ══════════════════════════════════════
   FOOTER
   ══════════════════════════════════════ */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
}
.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-link {
  font-size: 13px;
  color: var(--text-tertiary);
  transition: color 0.2s;
}
.footer-link:hover { color: var(--text-secondary); }
.footer-copy {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */
@media (max-width: 768px) {
  :root { --section-padding: 80px; }
  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .pain-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .how-steps { flex-direction: column; }
  .how-connector { display: none; }
  .pricing-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 28px; }
  .nav-links .nav-link,
  .nav-links .nav-cta { display: none; }
  .footer .container { flex-direction: column; gap: 16px; text-align: center; }
}

/* ══════════════════════════════════════
   LANGUAGE SWITCHER
   ══════════════════════════════════════ */
.lang-switcher {
  display: flex;
  gap: 2px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: 3px;
}
.lang-btn {
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
  letter-spacing: 0.3px;
  cursor: pointer;
}
.lang-btn:hover {
  color: var(--text-secondary);
}
.lang-btn.active {
  background: var(--accent);
  color: #0b0d11;
}