@import url('/css/theme.css');

:root {
  --primary: var(--cb-primary-dark, #1E3A5F);
  --primary-dark: var(--cb-primary-dark, #1E3A5F);
  --accent: var(--cb-primary-2, #2A5080);
  --bg: var(--cb-bg, #F0F4F8);
  --surface: var(--cb-surface, #FFFFFF);
  --surface-2: var(--cb-surface-2, #F5F8FB);
  --border: var(--cb-border, #D1DDE8);
  --text: var(--cb-text, #1E3A5F);
  --muted: var(--cb-muted, #6B8299);
  --success: var(--cb-success, #4CD964);
  --radius: var(--cb-radius, 8px);
  --font: var(--cb-font);
  --max: 1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6,
.section-title,
.feature-card h3,
.benefit-item h4,
.faq-item h4,
.node-type-card h4,
.example-split h4,
.cta-band h2,
.flow-steps li strong,
.postman-card h2 {
  color: var(--cb-primary-dark);
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--accent); text-decoration: underline; }

.btn-primary,
.btn-primary:hover {
  color: var(--cb-btn-text) !important;
  text-decoration: none;
}

.btn-primary:hover:not(:disabled) {
  color: #fff !important;
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--cb-primary-light);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--cb-primary-dark);
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover { text-decoration: none; }

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--cb-radius-sm);
  background: var(--cb-primary-dark);
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  font-weight: 800;
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s;
  white-space: nowrap;
}

.nav-links a:hover { color: var(--cb-primary-dark); text-decoration: none; }

.nav-cta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.45rem;
  flex-wrap: nowrap;
}

.nav-cta .btn {
  white-space: nowrap;
  padding: 0.5rem 0.85rem;
  font-size: 0.84rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.15rem;
  border-radius: var(--cb-radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  font-family: inherit;
  background: var(--cb-btn-bg);
  color: var(--cb-btn-text);
}

.btn:hover:not(:disabled) {
  background: var(--cb-primary-dark);
  color: #fff;
  text-decoration: none;
}

.btn:active:not(:disabled) {
  background: var(--cb-primary-dark);
  color: #fff;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--cb-primary-dark);
  color: #fff;
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--cb-primary-dark);
  border: 1px solid var(--border);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--cb-primary-light);
  color: var(--cb-primary-dark);
  text-decoration: none;
}

.btn-lg { padding: 0.85rem 1.75rem; font-size: 1rem; }

/* ── Hero ── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 5rem 1.5rem 4rem;
  background: var(--surface);
}

.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
}

.hero-badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: var(--cb-primary-light);
  border: 1px solid var(--border);
  color: var(--cb-primary-dark);
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--cb-primary-dark);
}

.hero h1 span { color: var(--cb-primary-dark); }

.hero-lead {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 1.75rem;
  max-width: 32rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 2rem; }

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero-stat strong { display: block; font-size: 1.5rem; color: var(--cb-primary-dark); }
.hero-stat span { font-size: 0.8rem; color: var(--muted); }

.hero-visual {
  background: var(--surface);
  border: 1px solid var(--cb-primary-light);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--cb-shadow);
}

.mock-channels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.mock-ch {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--cb-radius-sm);
  padding: 0.65rem;
  text-align: center;
  font-size: 0.72rem;
  color: var(--muted);
}

.mock-ch.active {
  border-color: var(--cb-primary-dark);
  background: var(--cb-primary-light);
  color: var(--cb-primary-dark);
}

.mock-flow {
  background: var(--bg);
  border-radius: var(--cb-radius-sm);
  padding: 1rem;
  font-size: 0.82rem;
  color: var(--muted);
  min-height: 120px;
  border: 1px dashed var(--border);
}

.mock-flow .node {
  display: inline-block;
  padding: 0.35rem 0.65rem;
  background: var(--cb-primary-light);
  border-radius: var(--cb-radius-sm);
  margin: 0.25rem;
  border: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--cb-primary-dark);
}

.mock-flow p { color: var(--muted); }

/* ── Sections ── */
section { padding: 4rem 1.5rem; }

.section-inner { max-width: var(--max); margin: 0 auto; }

.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cb-primary-dark);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--muted);
  max-width: 36rem;
  margin-bottom: 2.5rem;
}

/* ── Features grid ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--cb-primary-light);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  border-color: var(--cb-primary-dark);
  box-shadow: var(--cb-shadow-glow);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--cb-radius-sm);
  background: var(--cb-primary-light);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.feature-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.88rem; color: var(--muted); }

/* ── Channels strip ── */
.channels-strip {
  background: var(--cb-primary-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.channel-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 2rem;
  padding: 1rem 0;
}

.channel-logos span {
  font-size: 0.9rem;
  color: var(--cb-primary-dark);
  font-weight: 500;
}

/* ── Flow guide ── */
.section-flow-guide {
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 4rem 1.5rem;
}

.flow-diagram {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.35rem;
  margin: 2rem 0;
  padding: 1.25rem;
  background: var(--cb-primary-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.flow-node {
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.flow-node-entry { background: rgba(167, 139, 250, 0.2); color: #6d28d9; }
.flow-node-text { background: var(--cb-primary-light); color: var(--cb-primary-dark); border: 1px solid var(--border); }
.flow-node-choice { background: rgba(76, 217, 100, 0.15); color: #2a9d4a; }
.flow-node-handoff { background: rgba(245, 166, 35, 0.15); color: #c47d00; }
.flow-node-end { background: rgba(231, 76, 60, 0.12); color: var(--cb-danger); }
.flow-arrow { color: var(--muted); font-size: 0.9rem; }

.flow-steps {
  list-style: none;
  display: grid;
  gap: 1rem;
  max-width: 720px;
  margin: 0 auto 2rem;
}

.flow-steps li {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--cb-primary-light);
  border-radius: var(--radius);
}

.flow-steps li strong { font-size: 0.95rem; }
.flow-steps li span { font-size: 0.85rem; color: var(--muted); line-height: 1.5; }

.flow-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

/* ── Examples ── */
.section-examples { padding: 4rem 1.5rem; }

.example-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0;
  padding: 0.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  width: fit-content;
}

.example-tabs button {
  padding: 0.45rem 1rem;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
}

.example-tabs button.active,
.example-tabs button:hover {
  background: var(--cb-primary-dark);
  color: #fff !important;
}

.example-panel { display: none; }
.example-panel.active { display: block; animation: fadeIn 0.25s ease; }

.node-types-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.node-type-card {
  background: var(--surface);
  border: 1px solid var(--cb-primary-light);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.node-type-card h4 { font-size: 0.95rem; margin: 0.5rem 0 0.35rem; }
.node-type-card p { font-size: 0.82rem; color: var(--muted); margin-bottom: 0.75rem; }

.node-badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: var(--cb-radius-sm);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.node-badge-entry { background: rgba(167, 139, 250, 0.2); color: #6d28d9; }
.node-badge-text { background: var(--cb-primary-light); color: var(--cb-primary-dark); }
.node-badge-choice { background: rgba(76, 217, 100, 0.15); color: #2a9d4a; }
.node-badge-handoff { background: rgba(245, 166, 35, 0.15); color: #c47d00; }
.node-badge-end { background: rgba(231, 76, 60, 0.12); color: var(--cb-danger); }

.code-block {
  display: block;
  padding: 0.85rem 1rem;
  background: var(--cb-primary-dark);
  border: 1px solid var(--border);
  border-radius: var(--cb-radius-sm);
  font-size: 0.72rem;
  line-height: 1.45;
  overflow-x: auto;
  color: #DDEAFB;
  font-family: 'Cascadia Code', 'Consolas', monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.example-split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.example-split h4 { font-size: 0.9rem; margin-bottom: 0.5rem; }

.chat-examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
}

.chat-example-chip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--cb-primary-light);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.chat-example-chip:hover {
  border-color: var(--cb-primary-dark);
  box-shadow: var(--cb-shadow-glow);
  text-decoration: none;
}

.chat-example-chip span:first-child { font-size: 1.35rem; }
.chat-example-chip strong { display: block; font-size: 0.88rem; }
.chat-example-chip small { color: var(--muted); font-size: 0.72rem; }

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.78rem; }

/* ── Postman section ── */
.section-postman {
  padding: 3rem 1.5rem 4rem;
  background: var(--surface-2);
}

.postman-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--cb-primary-light);
  border-radius: var(--radius);
}

.postman-features {
  list-style: none;
  margin-top: 1rem;
  font-size: 0.88rem;
  color: var(--muted);
  display: grid;
  gap: 0.35rem;
}

.postman-downloads {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: 220px;
}

@media (max-width: 768px) {
  .postman-card { grid-template-columns: 1fr; }
  .postman-downloads { width: 100%; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Benefits ── */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.benefit-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.benefit-check {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(76, 217, 100, 0.15);
  color: #2a9d4a;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.benefit-item h4 { font-size: 0.95rem; margin-bottom: 0.25rem; }
.benefit-item p { font-size: 0.85rem; color: var(--muted); }

/* ── FAQ ── */
.faq-list { max-width: 640px; }

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
}

.faq-item h4 { font-size: 0.95rem; margin-bottom: 0.4rem; }
.faq-item p { font-size: 0.88rem; color: var(--muted); }

/* ── CTA band ── */
.cta-band {
  background: var(--cb-primary-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  margin: 0 1.5rem 4rem;
  max-width: calc(var(--max) - 3rem);
  margin-left: auto;
  margin-right: auto;
}

.cta-band h2 { font-size: 1.75rem; margin-bottom: 0.75rem; }
.cta-band p { color: var(--muted); margin-bottom: 1.5rem; }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
  background: var(--cb-primary-dark);
  color: #DDEAFB;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

.footer-inner p { font-size: 0.82rem; color: rgba(221, 234, 251, 0.7); }
.footer-links { display: flex; gap: 1.5rem; list-style: none; }
.footer-links a { color: rgba(221, 234, 251, 0.7); font-size: 0.82rem; text-decoration: none; }
.footer-links a:hover { color: #fff; }

/* ── Mobile nav ── */
.cb-lang-select {
  padding: 0.45rem 0.6rem;
  border-radius: var(--cb-radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.82rem;
  font-family: inherit;
  margin-right: 0.35rem;
}

.menu-toggle { display: none; background: none; border: none; color: var(--cb-primary-dark); font-size: 1.5rem; cursor: pointer; }

@media (max-width: 900px) {
  .nav-inner { grid-template-columns: 1fr auto auto; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cb-primary-light);
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
  }
}