/* ============================================
   NDC Terminal — Marketing Site Stylesheet
   Terminal-dark aesthetic for GDS agents
   ============================================ */

/* --- Design Tokens --- */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-terminal: #000000;
  --bg-input: #0d0d0d;
  --text-primary: #e0e0e0;
  --text-secondary: #999999;
  --text-muted: #555555;
  --accent-green: #4AFF80;
  --accent-green-dim: #2a9950;
  --accent-green-glow: rgba(74, 255, 128, 0.15);
  --accent-cyan: #00E6FF;
  --accent-cyan-dim: #007a88;
  --accent-yellow: #FFDC00;
  --accent-purple: #C88CFF;
  --accent-red: #FF6464;
  --border-color: #1e1e1e;
  --border-accent: #2a2a2a;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --nav-height: 60px;
  --radius: 6px;
  --radius-lg: 12px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 2rem); }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-green); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-cyan); }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { line-height: 1.2; font-weight: 600; }

/* --- Utility --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
.mono { font-family: var(--font-mono); }
.text-green { color: var(--accent-green); }
.text-cyan { color: var(--accent-cyan); }
.text-yellow { color: var(--accent-yellow); }
.text-muted { color: var(--text-secondary); }

/* --- Navigation --- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--nav-height);
}
.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0;
}
.logo-prompt { color: var(--accent-green); margin-right: 0.35rem; }
.logo-accent { color: var(--accent-green); }
.cursor-blink {
  animation: blink 1s step-end infinite;
  color: var(--accent-green);
}
@keyframes blink { 50% { opacity: 0; } }

.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text-primary); }
.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  background: var(--accent-green);
  color: var(--bg-primary);
  border-radius: var(--radius);
  transition: background 0.2s, box-shadow 0.2s;
}
.nav-cta:hover {
  background: #5cff94;
  color: var(--bg-primary);
  box-shadow: 0 0 20px var(--accent-green-glow);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(10, 10, 10, 0.98);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
  }
  .nav-links.open { display: flex; }
}

/* --- Hero Section --- */
.hero {
  padding: calc(var(--nav-height) + 4rem) 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-green-glow) 0%, transparent 60%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 1rem;
  border: 1px solid var(--accent-green-dim);
  border-radius: 999px;
  color: var(--accent-green);
  background: rgba(74, 255, 128, 0.06);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.hero h1 {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}
.hero h1 .accent { color: var(--accent-green); }
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}
.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}
.btn-primary {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 2rem;
  background: var(--accent-green);
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  display: inline-block;
}
.btn-primary:hover {
  background: #5cff94;
  color: var(--bg-primary);
  box-shadow: 0 0 30px var(--accent-green-glow);
  transform: translateY(-1px);
}
.btn-secondary {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.75rem 2rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  display: inline-block;
}
.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* Terminal mockup (reusable for hero + inline mockups) */
.terminal-mockup {
  background: var(--bg-terminal);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  overflow: hidden;
}

/* Hero terminal demo */
.hero-terminal {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-terminal);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.6), 0 0 40px var(--accent-green-glow);
  text-align: left;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #1a1a1a;
  border-bottom: 1px solid var(--border-color);
}
.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #28c840; }
.terminal-title {
  flex: 1;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}
.terminal-body {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  min-height: 220px;
}
.terminal-line { margin-bottom: 0.15rem; }
.terminal-prompt { color: var(--accent-green); }
.terminal-cmd { color: var(--accent-cyan); }
.terminal-output { color: var(--text-secondary); }
.terminal-highlight { color: var(--accent-yellow); }
.terminal-success { color: var(--accent-green); }

/* Typing animation for hero terminal */
.type-cursor::after {
  content: '\2588';
  animation: blink 0.8s step-end infinite;
  color: var(--accent-green);
}

/* --- Stats Bar --- */
.stats-bar {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}
.stat-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-green);
  display: block;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --- Section --- */
.section {
  padding: 5rem 0;
}
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-header h2 {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 0.75rem;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Feature Cards --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.feature-card:hover {
  border-color: var(--accent-green-dim);
  box-shadow: 0 0 30px rgba(74, 255, 128, 0.05);
}
.feature-icon {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(74, 255, 128, 0.08);
  color: var(--accent-green);
  border: 1px solid rgba(74, 255, 128, 0.2);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
}
.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}
.feature-cmd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  background: rgba(74, 255, 128, 0.08);
  color: var(--accent-green);
  border-radius: 3px;
  margin-top: 0.75rem;
}

@media (max-width: 960px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* --- Command Showcase --- */
.command-showcase {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.command-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.command-list { list-style: none; }
.command-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
  align-items: baseline;
}
.command-item:last-child { border-bottom: none; }
.command-syntax {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
}
.command-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}
@media (max-width: 768px) {
  .command-grid { grid-template-columns: 1fr; }
}

/* --- Carriers Section --- */
.carriers-section { text-align: center; }
.carrier-groups {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.carrier-group h3 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.carrier-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}
.carrier-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color 0.2s, color 0.2s;
}
.carrier-tag:hover {
  border-color: var(--accent-green-dim);
  color: var(--accent-green);
}
.carrier-tag.direct {
  border-color: var(--accent-green-dim);
  color: var(--accent-green);
  background: rgba(74, 255, 128, 0.06);
}

/* --- Screenshots Section --- */
.screenshots-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.screenshot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
.screenshot-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.screenshot-item:hover {
  border-color: var(--accent-green-dim);
  box-shadow: 0 10px 60px rgba(0, 0, 0, 0.4);
}
.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
}
.screenshot-caption {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
}
.screenshot-caption h3 {
  font-family: var(--font-mono);
  font-size: 1rem;
  margin-bottom: 0.35rem;
}
.screenshot-caption p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Two-column layout for smaller screenshots */
.screenshot-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 768px) {
  .screenshot-grid-2 { grid-template-columns: 1fr; }
}

/* --- Workflow Section --- */
.workflow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  counter-reset: step;
}
.workflow-step {
  text-align: center;
  padding: 2rem 1rem;
  position: relative;
}
.workflow-step::before {
  counter-increment: step;
  content: counter(step);
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-green);
  display: block;
  margin-bottom: 1rem;
  opacity: 0.3;
}
.workflow-step h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}
.workflow-step p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}
.workflow-cmd {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  margin-top: 0.5rem;
  display: block;
}
@media (max-width: 768px) {
  .workflow-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .workflow-steps { grid-template-columns: 1fr; }
}

/* --- CTA Section --- */
.cta-section {
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, var(--accent-green-glow) 0%, transparent 60%);
  pointer-events: none;
}
.cta-content { position: relative; z-index: 1; }
.cta-section h2 {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 0.75rem;
}
.cta-section p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Signup Form --- */
.signup-page {
  padding: calc(var(--nav-height) + 4rem) 0 5rem;
  min-height: 100vh;
}
.signup-container {
  max-width: 560px;
  margin: 0 auto;
}
.signup-header {
  text-align: center;
  margin-bottom: 2.5rem;
}
.signup-header h1 {
  font-family: var(--font-mono);
  font-size: 2rem;
  margin-bottom: 0.75rem;
}
.signup-header p {
  color: var(--text-secondary);
  font-size: 1rem;
}
.signup-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.form-group {
  margin-bottom: 1.5rem;
}
.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 0 2px var(--accent-green-glow);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group textarea {
  resize: vertical;
  min-height: 80px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
}
.form-submit {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  background: var(--accent-green);
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 0.5rem;
}
.form-submit:hover {
  background: #5cff94;
  box-shadow: 0 0 30px var(--accent-green-glow);
}
.form-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 1.25rem;
}
.form-success {
  text-align: center;
  padding: 3rem 2rem;
}
.form-success h2 {
  font-family: var(--font-mono);
  color: var(--accent-green);
  margin-bottom: 0.75rem;
}
.form-success p {
  color: var(--text-secondary);
}

/* --- Footer --- */
.site-footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
}
.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.footer-brand {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 2rem;
}
.footer-tagline {
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  margin-top: 0.35rem;
}
.footer-links {
  display: flex;
  gap: 4rem;
  margin-bottom: 3rem;
}
.footer-col { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}
.footer-col a {
  color: var(--text-secondary);
  font-size: 0.85rem;
}
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}