:root {
  --bg: #f8f1df;
  --surface: #effaf6;
  --text: #0b2534;
  --muted: #2c5364;
  --border: #b7ddd7;
  --primary: #0f8fa6;
  --primary-2: #2aa876;
  --ring: rgba(15, 143, 166, 0.35);
  --shadow: 0 10px 30px rgba(20, 60, 72, 0.12);
  --success: #1d9f6e;
  --hero-glow: radial-gradient(circle at 8% 10%, rgba(40, 200, 236, 0.32), transparent 24%),
    radial-gradient(circle at 34% 8%, rgba(44, 206, 149, 0.28), transparent 22%),
    radial-gradient(circle at 66% 10%, rgba(86, 190, 248, 0.3), transparent 23%),
    radial-gradient(circle at 92% 12%, rgba(37, 190, 152, 0.26), transparent 21%),
    radial-gradient(circle at 18% 42%, rgba(58, 193, 239, 0.24), transparent 22%),
    radial-gradient(circle at 52% 38%, rgba(46, 198, 156, 0.23), transparent 21%),
    radial-gradient(circle at 84% 42%, rgba(100, 197, 249, 0.24), transparent 22%),
    radial-gradient(circle at 10% 78%, rgba(45, 188, 162, 0.22), transparent 21%),
    radial-gradient(circle at 42% 82%, rgba(74, 190, 244, 0.22), transparent 22%),
    radial-gradient(circle at 78% 84%, rgba(50, 191, 153, 0.21), transparent 21%);
}

[data-theme="dark"] {
  --bg: #050608;
  --surface: #10151c;
  --text: #f4fbff;
  --muted: #b8d4de;
  --border: #2a3644;
  --primary: #5bcde3;
  --primary-2: #48c08e;
  --ring: rgba(91, 205, 227, 0.42);
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.55);
  --success: #57d39b;
  --hero-glow: radial-gradient(circle at 8% 10%, rgba(66, 188, 231, 0.24), transparent 24%),
    radial-gradient(circle at 34% 8%, rgba(58, 192, 145, 0.2), transparent 22%),
    radial-gradient(circle at 66% 10%, rgba(76, 157, 230, 0.22), transparent 23%),
    radial-gradient(circle at 92% 12%, rgba(52, 171, 138, 0.19), transparent 21%),
    radial-gradient(circle at 18% 42%, rgba(68, 173, 228, 0.18), transparent 22%),
    radial-gradient(circle at 52% 38%, rgba(53, 177, 141, 0.17), transparent 21%),
    radial-gradient(circle at 84% 42%, rgba(86, 170, 232, 0.18), transparent 22%),
    radial-gradient(circle at 10% 78%, rgba(44, 162, 133, 0.16), transparent 21%),
    radial-gradient(circle at 42% 82%, rgba(74, 166, 226, 0.16), transparent 22%),
    radial-gradient(circle at 78% 84%, rgba(46, 164, 133, 0.15), transparent 21%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  background-color: var(--bg);
  background-image: var(--hero-glow);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  background-position: center top;
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(150%) blur(8px);
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  gap: 1rem;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
}

.brand span {
  color: var(--primary);
}

.controls {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0.66rem 0.95rem;
  border-radius: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.03);
}

.btn:hover {
  transform: translateY(-1px);
  border-color: color-mix(in oklab, var(--primary) 38%, var(--border));
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--ring);
}

.btn-primary {
  border-color: color-mix(in oklab, var(--primary) 55%, var(--border));
  background: linear-gradient(120deg, var(--primary), var(--primary-2));
  color: #fff;
}

.hero {
  background: var(--hero-glow);
  padding: clamp(3rem, 7vw, 5.8rem) 0 2.2rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.9rem, 4.8vw, 3.5rem);
  line-height: 1.07;
  letter-spacing: -0.03em;
  max-width: 18ch;
}

.hero p {
  margin-top: 1rem;
  color: var(--muted);
  max-width: 64ch;
  font-size: clamp(1.02rem, 2.1vw, 1.15rem);
}

.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.section {
  padding: 2rem 0 4rem;
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.prompt-categories {
  padding-top: 2.2rem;
}

.prompt-category + .prompt-category {
  margin-top: 3.2rem;
  padding-top: 2.4rem;
  border-top: 1px solid var(--border);
}

.category-title {
  margin: 0;
}

.category-grid {
  margin-top: 1rem;
}

.card {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 1.15rem;
  padding: 1.15rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.page-shell {
  background: none;
  padding: 2rem 0 4rem;
}

.breadcrumb {
  color: var(--muted);
  font-size: 0.96rem;
  margin-bottom: 1rem;
}

.prompt-box {
  background: color-mix(in oklab, var(--bg) 88%, #ffffff 12%);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  min-height: 230px;
  box-shadow: var(--shadow);
  overflow-x: auto;
}

.prompt-box pre {
  margin: 0;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 0.95rem;
  line-height: 1.5;
  font-family: "SFMono-Regular", Menlo, Consolas, Monaco, "Liberation Mono", "Courier New", monospace;
}

.status {
  margin-top: 0.7rem;
  font-size: 0.92rem;
  color: var(--muted);
  min-height: 1.3rem;
}

.status.success {
  color: var(--success);
}

.footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  padding: 1.4rem 0 2.1rem;
  font-size: 0.95rem;
}

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