:root {
  --bg: #0e1117;
  --bg-card: #161b22;
  --bg-card-hover: #1c2128;
  --border: #30363d;
  --border-focus: #f38020;
  --cf-orange: #f38020;
  --cf-orange-light: #faad3f;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --text-muted: #6e7681;
  --success: #3fb950;
  --info: #58a6ff;
  --font-mono: "Cascadia Code", "Cascadia Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

code, pre {
  font-family: var(--font-mono);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
header {
  border-bottom: 1px solid var(--border);
  background: rgba(14, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-mono);
}

.logo span {
  color: var(--cf-orange);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.15s;
}

.nav-links a:hover {
  color: var(--text);
}

.btn-github {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.45rem 1rem;
  border-radius: 6px;
  color: var(--text) !important;
  font-weight: 500;
  font-size: 0.9rem;
  transition: border-color 0.2s, background 0.2s;
}

.btn-github:hover {
  border-color: var(--cf-orange);
  background: var(--bg-card-hover);
}

/* Hero */
.hero {
  padding: 5rem 0 3.5rem;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(243, 128, 32, 0.1);
  border: 1px solid rgba(243, 128, 32, 0.3);
  color: var(--cf-orange-light);
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
}

.hero h1 {
  font-size: 3.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  line-height: 1.15;
}

.hero h1 span {
  background: linear-gradient(135deg, #f38020 0%, #faad3f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-dim);
  max-width: 740px;
  margin: 0 auto 2.5rem;
}

/* Install Box */
.install-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  max-width: 600px;
  margin: 0 auto 3rem;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.install-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid var(--border);
}

.tab-btn {
  padding: 0.65rem 1.25rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.tab-btn.active {
  color: var(--cf-orange);
  border-bottom-color: var(--cf-orange);
  background: var(--bg-card);
}

.tab-content {
  display: none;
  padding: 1rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: #fff;
}

.tab-content.active {
  display: flex;
}

.copy-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* Terminal Preview Image */
.preview-wrapper {
  margin: 2rem auto 5rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  background: #1a1a1a;
  position: relative;
}

.preview-bar {
  background: #252526;
  height: 2.2rem;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.5rem;
  border-bottom: 1px solid #333;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.preview-bar-title {
  margin-left: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.preview-img {
  width: 100%;
  display: block;
}

/* Features Grid */
.features-section {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section-title p {
  color: var(--text-dim);
  font-size: 1.1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-focus);
  box-shadow: 0 8px 24px rgba(243, 128, 32, 0.1);
}

.card-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Cheatsheet Table */
.cheatsheet-section {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
}

.table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th, td {
  padding: 0.9rem 1.25rem;
  text-align: left;
}

th {
  background: rgba(0, 0, 0, 0.2);
  color: var(--cf-orange-light);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

tr:not(:last-child) td {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

kbd {
  background: #21262d;
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.2);
  color: #fff;
  display: inline-block;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.45rem;
  white-space: nowrap;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
}

footer a {
  color: var(--cf-orange);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2.25rem; }
  .grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}