:root {
  --bg: #0b0b0f;
  --bg-soft: #131319;
  --bg-card: #17171f;
  --border: #26262f;
  --text: #f5f5f7;
  --text-muted: #a3a3af;
  --accent: #7c5cff;
  --accent-hover: #9276ff;
  --accent-soft: rgba(124, 92, 255, 0.15);
  --success: #34d399;
  --code-bg: #0e0e13;
  --radius: 14px;
  --max-width: 880px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Top nav */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 11, 15, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.topnav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  white-space: nowrap;
}

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

.toc {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.toc::-webkit-scrollbar {
  display: none;
}

.toc a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 999px;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}

.toc a:hover {
  background: var(--bg-card);
  color: var(--text);
}

/* Hero */
.hero {
  padding: 64px 0 40px;
  text-align: center;
}

.hero .eyebrow {
  display: inline-block;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(28px, 6vw, 46px);
  font-weight: 800;
  margin: 0 0 16px;
  line-height: 1.15;
}

.hero .subtitle {
  color: var(--text-muted);
  font-size: clamp(15px, 2.2vw, 18px);
  max-width: 620px;
  margin: 0 auto 32px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  border-radius: 10px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s, background 0.2s, opacity 0.2s;
  font-family: inherit;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
}

.btn-copy {
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid var(--border);
  font-size: 13px;
  padding: 8px 14px;
}

.btn-copy:hover {
  border-color: var(--accent);
}

.btn-copy.copied {
  background: var(--success);
  border-color: var(--success);
  color: #0b0b0f;
}

/* Sections */
.step {
  padding: 56px 0;
  border-top: 1px solid var(--border);
  scroll-margin-top: 80px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  font-size: 15px;
  margin-bottom: 16px;
}

.step h2 {
  font-size: clamp(22px, 4vw, 30px);
  margin: 0 0 16px;
  font-weight: 800;
}

.step p {
  color: var(--text-muted);
  margin: 0 0 16px;
}

.step p strong {
  color: var(--text);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin: 20px 0;
}

.card-title {
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 12px;
  color: var(--text);
}

.note {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: 14px 16px;
  margin: 20px 0;
  color: var(--text);
  font-size: 14px;
}

.key-phrase {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  margin: 24px 0;
}

ol, ul {
  color: var(--text-muted);
  padding-left: 22px;
}

ol li, ul li {
  margin-bottom: 8px;
}

ol li strong, ul li strong {
  color: var(--text);
}

.folder-tree {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  font-size: 13.5px;
  color: var(--text);
  white-space: pre;
  overflow-x: auto;
  margin: 16px 0;
}

.inline-block {
  display: inline-block;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 14px;
  color: var(--accent);
  margin: 8px 0;
}

/* Code / prompt blocks */
.prompt-block {
  position: relative;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 16px 0;
  overflow: hidden;
}

.prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}

.prompt-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.prompt-body {
  padding: 16px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
  white-space: pre-wrap;
  color: var(--text);
  max-height: 420px;
  overflow-y: auto;
}

/* Example cards */
.examples-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 20px 0;
}

@media (min-width: 640px) {
  .examples-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.example-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  font-size: 13.5px;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.example-text {
  flex: 1;
}

/* Flow diagram */
.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  justify-content: center;
  margin: 24px 0;
  font-size: 13px;
}

.flow-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 600;
  white-space: nowrap;
}

.flow-arrow {
  color: var(--accent);
  font-weight: 700;
}

/* CTA final */
.cta {
  text-align: center;
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.cta h2 {
  font-size: clamp(22px, 4vw, 30px);
  margin: 0 0 12px;
}

.cta p {
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto 24px;
}

.socials {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

footer strong {
  color: var(--text);
}