@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Source+Serif+4:wght@400;500;600&display=swap");

:root {
  --bg: #f7f3ea;
  --bg-strong: #f0e5d2;
  --ink: #1b1a17;
  --muted: #5e5a51;
  --panel: #fbf8f2;
  --panel-border: #e2d6c2;
  --accent: #0c6b5a;
  --accent-strong: #0a4f43;
  --glow: #f2c14e;
  --rose: #e07a5f;
  --font-sans: "Space Grotesk", "Segoe UI", sans-serif;
  --font-serif: "Source Serif 4", "Iowan Old Style", serif;
  --shadow: 0 20px 45px rgba(15, 10, 5, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: radial-gradient(circle at 20% 20%, #ffffff 0%, var(--bg) 40%, #eadfcd 100%);
  min-height: 100vh;
  padding: 32px clamp(20px, 4vw, 64px) 80px;
  position: relative;
  overflow-x: hidden;
}

.glow {
  position: fixed;
  inset: -20% -10% auto auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(12, 107, 90, 0.22), rgba(12, 107, 90, 0));
  filter: blur(12px);
  z-index: 0;
  pointer-events: none;
}

.grain {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

.hero {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin-bottom: 48px;
  animation: rise 0.8s ease-out both;
}

.top-nav {
  position: sticky;
  top: 16px;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  padding: 10px 16px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  gap: 16px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nav-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--accent-strong);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--panel);
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow);
  font-weight: 600;
}

.logo {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--rose));
  color: white;
  font-size: 18px;
  font-weight: 700;
}

.wordmark {
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 12px;
}


.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 3vw, 3.6rem);
  margin: 24px 0 12px;
  line-height: 1.1;
}

.hero p {
  font-size: 1.1rem;
  max-width: 720px;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  align-items: center;
}

button {
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
  border-radius: 14px;
  padding: 12px 18px;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button.primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 10px 30px rgba(12, 107, 90, 0.25);
}

button.ghost {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: var(--accent-strong);
}

button:hover {
  transform: translateY(-2px);
}

.runtime {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  padding: 20px;
  box-shadow: var(--shadow);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: rise 0.8s ease-out both;
}

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

.panel-title {
  font-weight: 700;
  font-size: 1.1rem;
}

.panel-subtitle {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 4px;
}

.panel-badge {
  background: var(--bg-strong);
  color: var(--accent-strong);
  padding: 6px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.editor textarea {
  flex: 1;
  width: 100%;
  min-height: 320px;
  border: none;
  border-radius: 16px;
  padding: 16px;
  font-family: "SFMono-Regular", "Menlo", monospace;
  font-size: 14px;
  background: #111411;
  color: #f6f3ea;
  line-height: 1.5;
  resize: vertical;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.editor textarea:focus {
  outline: 2px solid rgba(12, 107, 90, 0.6);
}

.editor-cm {
  flex: 1;
  min-height: 320px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.editor-cm .cm-editor {
  height: 100%;
  font-family: "SFMono-Regular", "Menlo", monospace;
  font-size: 14px;
}

.editor-cm .cm-scroller {
  overflow: auto;
}

.panel-footer {
  font-size: 0.85rem;
  color: var(--muted);
}

.output pre {
  flex: 1;
  width: 100%;
  min-height: 280px;
  background: #f3efe6;
  border-radius: 16px;
  padding: 16px;
  font-family: "SFMono-Regular", "Menlo", monospace;
  font-size: 13px;
  overflow: auto;
  white-space: pre-wrap;
  border: 1px solid #e5d8c4;
}

.example-grid {
  display: grid;
  gap: 12px;
}

.example {
  background: #fff5e6;
  border: 1px solid #f1d3a4;
  padding: 14px;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  text-align: left;
}

.example span {
  font-weight: 600;
}

.example em {
  font-style: normal;
  color: var(--muted);
  font-size: 0.85rem;
}

.example:hover {
  box-shadow: 0 12px 24px rgba(224, 122, 95, 0.2);
}

.note {
  margin-top: auto;
  background: #f0ebe0;
  border-radius: 16px;
  padding: 14px;
  font-size: 0.9rem;
  color: var(--muted);
}

code {
  background: #f0e7d6;
  padding: 2px 6px;
  border-radius: 8px;
  font-family: "SFMono-Regular", "Menlo", monospace;
  font-size: 0.85em;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 720px) {
  body {
    padding: 32px 20px 60px;
  }

  .hero-actions {
    align-items: stretch;
  }

  button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}