/* ========================================
   ET Labs — Styles
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #000;
  --bg-raised: #0a0a0a;
  --bg-card: #111;
  --bg-card-hover: #191919;
  --border: #222;
  --border-light: #333;
  --text: #ededed;
  --text-secondary: #888;
  --text-tertiary: #555;
  --accent: #fff;
  --gradient-start: #00d4ff;
  --gradient-mid: #7928ca;
  --gradient-end: #ff0080;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
  --max-width: 1100px;
  --transition: 150ms ease;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}


/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-mark {
  font-size: 18px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta {
  background: var(--accent);
  color: var(--bg) !important;
  padding: 8px 16px;
  border-radius: var(--radius-xs);
  font-weight: 500;
  font-size: 13px !important;
  transition: opacity var(--transition) !important;
}

.nav-cta:hover {
  opacity: 0.9;
}


/* --- Hero --- */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 100vh;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-badge {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero-gradient {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 480px;
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 12px;
}

.hero-glow {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse at center, rgba(121, 40, 202, 0.15) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}


/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--border-light);
  color: var(--text);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: var(--radius);
}


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

.section-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 56px;
}


/* --- Services Cards --- */
.services {
  padding: 120px 0;
  border-top: 1px solid var(--border);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.card {
  background: var(--bg-card);
  padding: 40px 32px;
  transition: background var(--transition);
}

.card:hover {
  background: var(--bg-card-hover);
}

.card-featured {
  background: var(--bg-card-hover);
}

.card-featured:hover {
  background: #1e1e1e;
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  color: var(--text-secondary);
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-list li {
  font-size: 13px;
  color: var(--text-tertiary);
  padding-left: 16px;
  position: relative;
}

.card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border-light);
}


/* --- Process --- */
.process {
  padding: 120px 0;
  border-top: 1px solid var(--border);
}

.steps {
  display: grid;
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.step {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 32px;
  background: var(--bg-card);
  transition: background var(--transition);
}

.step:hover {
  background: var(--bg-card-hover);
}

.step-number {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-tertiary);
  min-width: 32px;
  padding-top: 2px;
}

.step-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 560px;
}


/* --- Contact --- */
.contact {
  padding: 120px 0;
  border-top: 1px solid var(--border);
}

.contact-box {
  text-align: center;
  padding: 80px 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-raised);
  position: relative;
  overflow: hidden;
}

.contact-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gradient-start), var(--gradient-mid), var(--gradient-end), transparent);
}

.contact-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.contact-sub {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}


/* --- Legal Pages --- */
.legal {
  padding: 140px 0 80px;
}

.legal-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 8px;
}

.legal-updated {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-bottom: 48px;
}

.legal-body h2 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 32px;
  margin-bottom: 12px;
}

.legal-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.legal-body ul {
  margin-bottom: 16px;
  padding-left: 20px;
}

.legal-body li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 8px;
  margin-bottom: 4px;
  list-style: disc;
}

.legal-body a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-body a:hover {
  color: var(--gradient-start);
}


/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-tertiary);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--text-secondary);
}

.footer-copy {
  font-size: 13px;
  color: var(--text-tertiary);
}


/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links a:not(.nav-cta) {
    display: none;
  }

  .hero {
    min-height: 90vh;
    padding: 100px 20px 60px;
  }

  .hero-sub {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .step {
    flex-direction: column;
    gap: 12px;
  }

  .section-title {
    font-size: 28px;
  }

  .contact-box {
    padding: 48px 24px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .legal {
    padding: 100px 0 60px;
  }

  .services,
  .process,
  .tech,
  .contact {
    padding: 80px 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 36px;
  }

  .card {
    padding: 28px 24px;
  }
}