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

:root {
  --bg: #0a0a0b;
  --surface: #111114;
  --surface-2: #18181c;
  --border: rgba(255,255,255,0.07);
  --border-focus: rgba(255,255,255,0.18);
  --text: #f0f0f2;
  --text-2: #9999a8;
  --text-3: #606070;
  --accent: #7c6af7;
  --accent-dim: rgba(124,106,247,0.12);
  --accent-hover: #6b5ae0;
  --success: #34d399;
  --error: #f87171;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
}

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

html, body {
  min-height: 100%;
}

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

/* ── noise texture overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px;
  z-index: 1000;
}

/* ── layout ── */
.shell {
  width: min(100% - 40px, 680px);
  margin: 0 auto;
  padding: 80px 0 100px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ── hero ── */
.hero {
  text-align: center;
  padding: 28px 0 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.hero-logo {
  width: 88px;
  height: auto;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 18px rgba(100,160,255,0.25));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  padding: 5px 12px;
  border: 1px solid rgba(124,106,247,0.3);
  border-radius: var(--radius-pill);
  background: rgba(124,106,247,0.06);
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  background: linear-gradient(135deg, #ffffff 0%, #c8c8d8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.promise {
  font-size: 1.05rem;
  color: var(--text-2);
  font-weight: 400;
  max-width: 380px;
  margin-bottom: 28px;
}

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

.hero-button {
  text-decoration: none;
}

.attribution {
  margin-top: 28px;
  font-size: 0.82rem;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

.attribution strong {
  color: var(--text-2);
  font-weight: 600;
}

/* ── card ── */
.demo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 16px;
}

.demo-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.demo-head h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.demo-copy {
  font-size: 0.88rem;
  color: var(--text-3);
  margin-top: 2px;
}

/* ── mode toggle ── */
.mode-toggle {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface-2);
}

.mode-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-3);
  border-radius: var(--radius-pill);
  padding: 7px 16px;
  font: 600 0.82rem/1 'Inter', sans-serif;
  cursor: pointer;
  transition: background 160ms, color 160ms, box-shadow 160ms;
}

.mode-button:hover {
  color: var(--text-2);
}

.mode-button.is-active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

/* ── panel + fields ── */
.panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.02em;
}

.helper-text {
  font-size: 0.82rem;
  color: var(--text-3);
}

.input-area,
.schema-area {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--text);
  outline: none;
  resize: vertical;
  padding: 16px 18px;
  transition: border-color 160ms, box-shadow 160ms;
}

.input-area {
  min-height: 120px;
  font: 400 0.98rem/1.75 'Inter', sans-serif;
}

.schema-area {
  min-height: 240px;
  font: 400 0.9rem/1.7 'JetBrains Mono', monospace;
}

.input-area:focus,
.schema-area:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(124,106,247,0.1);
}

.input-area::placeholder {
  color: var(--text-3);
}

/* ── schema panel slide ── */
.schema-panel {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-4px);
  transition:
    max-height 280ms ease,
    opacity 220ms ease,
    transform 220ms ease;
}

.schema-panel.is-visible {
  max-height: 440px;
  opacity: 1;
  transform: translateY(0);
}

/* ── action row ── */
.action-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

/* ── buttons ── */
.generate-button {
  appearance: none;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: #fff;
  font: 600 0.95rem/1 'Inter', sans-serif;
  padding: 15px 32px;
  min-width: 220px;
  cursor: pointer;
  transition: background 160ms, transform 120ms, box-shadow 160ms;
  box-shadow: 0 0 0 0 rgba(124,106,247,0);
  letter-spacing: -0.01em;
}

.generate-button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(124,106,247,0.35);
}

.generate-button:active {
  transform: translateY(0);
  box-shadow: none;
}

.generate-button:disabled {
  cursor: wait;
  opacity: 0.5;
  transform: none;
  box-shadow: none;
}

/* hero-button version (link) */
a.generate-button,
a.generate-button:visited {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #fff;
}

.link-button {
  color: var(--text-2);
  text-decoration: none;
  font: 500 0.92rem/1 'Inter', sans-serif;
  transition: color 160ms;
}

.link-button:hover {
  color: var(--text);
}

.strong-link {
  font-weight: 700;
  color: var(--accent);
}

.strong-link:hover {
  color: var(--accent-hover);
}

.secondary-button {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  color: var(--text-2);
  font: 600 0.82rem/1 'Inter', sans-serif;
  padding: 9px 16px;
  cursor: pointer;
  transition: background 160ms, border-color 160ms, color 160ms;
}

.secondary-button:hover {
  background: var(--surface);
  border-color: var(--border-focus);
  color: var(--text);
}

.text-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--accent);
  font: 600 0.88rem/1 'Inter', sans-serif;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-color: rgba(124,106,247,0.4);
  transition: color 160ms;
}

.text-button:hover {
  color: var(--accent-hover);
}

/* ── status text ── */
.processing-text,
.latency-text {
  font-size: 0.84rem;
  color: var(--text-3);
  min-height: 1.2em;
  margin: 0;
}

/* ── result section ── */
.result-section {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 260ms ease, transform 260ms ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.result-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.result-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.output-viewer {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  padding: 18px 20px;
  min-height: 120px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font: 400 0.9rem/1.75 'JetBrains Mono', monospace;
  color: var(--text);
}

.result-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.validation-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--success);
  margin: 0;
  min-height: 1.2em;
}

.validation-text.is-error {
  color: var(--error);
}

/* ── demo limit ── */
.demo-limit {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border: 1px solid rgba(124,106,247,0.2);
  border-radius: var(--radius);
  padding: 14px 18px;
  background: var(--accent-dim);
}

.demo-limit-title {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-2);
}

/* ── wow block ── */
.wow-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding-top: 2px;
}

/* ── info sections ── */
.info-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 30px;
}

.info-section h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.body-copy {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.7;
}

.bullet-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0;
  margin-top: 8px;
}

.bullet-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-2);
}

.bullet-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ── api section ── */
.api-section .api-snippet {
  margin: 14px 0 20px;
}

.api-snippet {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #0d0d10;
  padding: 18px 20px;
  overflow: auto;
  white-space: pre;
  word-break: break-word;
  font: 400 0.88rem/1.7 'JetBrains Mono', monospace;
  color: #c8c8d8;
}

/* ── footer ── */
.footer {
  display: flex;
  justify-content: center;
  gap: 28px;
  padding: 20px 24px;
  border-top: 1px solid var(--border);
  margin-top: 12px;
}

.footer a {
  color: var(--text-3);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 160ms;
}

.footer a:hover {
  color: var(--text-2);
}

/* ── mobile ── */
@media (max-width: 640px) {
  .shell {
    width: min(100% - 28px, 680px);
    padding: 56px 0 72px;
    gap: 12px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .demo-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .demo-card,
  .info-section {
    padding: 22px 20px;
  }

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

  .hero-button,
  .generate-button {
    width: 100%;
    justify-content: center;
  }

  .result-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .result-actions {
    width: 100%;
  }

  .secondary-button {
    flex: 1 1 auto;
    text-align: center;
  }

  .demo-limit {
    flex-direction: column;
    align-items: flex-start;
  }
}