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

:root {
  --bg: #0a0d14;
  --surface: #111622;
  --surface2: #161d2e;
  --border: #1e2a42;
  --accent: #7c6af7;
  --accent2: #5eead4;
  --text: #e2e8f0;
  --muted: #c8d3e0;
  --code-bg: #0d1117;
  --radius: 12px;
  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

html { scroll-behavior: smooth; scroll-padding-top: 68px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

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

.nav-links { display: flex; gap: 1.5rem; align-items: center; }

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.btn-gh {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text) !important;
  padding: 0.4rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem !important;
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s !important;
  text-decoration: none;
}

.btn-gh:hover { background: var(--border) !important; border-color: var(--accent) !important; }

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  border-bottom: 1px solid rgba(124, 106, 247, 0.25);
  box-shadow: 0 1px 0 rgba(124, 106, 247, 0.1), 0 40px 80px -20px rgba(0,0,0,0.6);
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px; left: 50%; transform: translateX(-50%);
  width: 1000px; height: 700px;
  background: radial-gradient(ellipse at center, rgba(124, 106, 247, 0.22) 0%, transparent 65%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px; right: -200px;
  width: 600px; height: 400px;
  background: radial-gradient(ellipse at center, rgba(94, 234, 212, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(124, 106, 247, 0.1);
  border: 1px solid rgba(124, 106, 247, 0.3);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  border-radius: 99px;
  margin-bottom: 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  cursor: default;
  will-change: transform;
}

.badge:hover {
  border-color: var(--accent);
  background: rgba(124, 106, 247, 0.2);
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5), 0 0 0 1px var(--accent), 0 8px 32px rgba(124,106,247,0.2);
}

.badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.hero-logo {
  transition: transform 0.2s ease, filter 0.2s ease;
  will-change: transform;
  cursor: default;
  border-radius: var(--radius);
}

.hero-logo:hover {
  transform: translateY(-10px);
  filter: drop-shadow(0 0 36px rgba(124,106,247,0.6));
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 1.25rem;
}

h1 .gradient {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 0.75rem 1.75rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: opacity 0.2s, transform 0.15s;
}

.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--text);
  text-decoration: none;
  padding: 0.75rem 1.75rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}

.btn-outline:hover { border-color: var(--accent); background: rgba(124,106,247,0.07); transform: translateY(-1px); }

/* TERMINAL SNIPPET */
.terminal-wrap {
  margin-top: 4rem;
  width: 100%;
  max-width: 680px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 24px 80px rgba(0,0,0,0.5);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  will-change: transform;
}

.terminal-wrap:hover {
  border-color: var(--accent);
  box-shadow: 0 32px 96px rgba(124,106,247,0.25), 0 24px 80px rgba(0,0,0,0.5);
  transform: translateY(-10px);
}

.terminal-bar {
  background: var(--surface2);
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-r { background: #ff5f57; }
.dot-y { background: #ffbd2e; }
.dot-g { background: #28c840; }

.terminal-label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-left: auto;
  font-family: var(--mono);
}

.terminal-body {
  background: var(--code-bg);
  padding: 1.25rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.8;
}

.terminal-body .prompt { color: var(--accent2); user-select: none; }
.terminal-body .cmd { color: var(--text); }
.terminal-body .flag { color: var(--accent); }
.terminal-body .val { color: #fbbf24; }
.terminal-body .comment { color: var(--muted); }
.terminal-body .out { color: #4ade80; }

/* SECTION LAYOUT */
section {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.section-intro {
  color: var(--muted);
  max-width: 600px;
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

/* HOW IT WORKS / STEPS */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  position: relative;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.25s ease,
              background 0.25s ease;
  will-change: transform;
}

.step:hover {
  border-color: var(--accent);
  background: var(--surface2);
  transform: translateY(-10px);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 8px 16px rgba(0,0,0,0.35),
    0 28px 56px rgba(0,0,0,0.5),
    0 0 0 1px var(--accent),
    0 16px 48px rgba(124,106,247,0.35);
}

.step-num {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.step h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; color: #d4f700; }
.step p { font-size: 0.9rem; color: var(--muted); }

/* SERVICE GRID */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.25s ease,
              background 0.25s ease;
  will-change: transform;
}

.service-card:hover {
  border-color: var(--accent2);
  background: var(--surface2);
  transform: translateY(-10px);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 8px 16px rgba(0,0,0,0.35),
    0 28px 56px rgba(0,0,0,0.5),
    0 0 0 1px var(--accent2),
    0 16px 48px rgba(94,234,212,0.25);
}

.service-card h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent2);
  margin-bottom: 1rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  font-family: var(--mono);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
}

/* OUTPUT GRID */
.output-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

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

.output-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.25s ease,
              background 0.25s ease;
  will-change: transform;
}

.output-card:hover {
  border-color: var(--accent);
  background: var(--surface2);
  transform: translateY(-10px);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 8px 16px rgba(0,0,0,0.35),
    0 28px 56px rgba(0,0,0,0.5),
    0 0 0 1px var(--accent),
    0 16px 48px rgba(124,106,247,0.35);
}

.output-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.output-card p {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

/* WHY HARD */
.hard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.hard-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  border-left: 3px solid var(--accent);
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.25s ease,
              background 0.25s ease;
  will-change: transform;
}

.hard-card:hover {
  border-color: var(--accent);
  background: var(--surface2);
  transform: translateY(-10px);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 8px 16px rgba(0,0,0,0.35),
    0 28px 56px rgba(0,0,0,0.5),
    0 0 0 1px var(--accent),
    0 16px 48px rgba(124,106,247,0.35);
}

.hard-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #d4f700;
  margin-bottom: 0.75rem;
}

.hard-card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
}

.hard-card p + p { margin-top: 0.75rem; }

/* TAB BAR (kept for compatibility) */
.tab-bar {
  display: flex;
  gap: 0.25rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.25rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.45rem 3rem;
  border-radius: 7px;
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
  letter-spacing: 0.01em;
}

.tab-btn:hover { color: var(--text); }

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

/* CODE BLOCK */
pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.6;
  overflow-x: auto;
  color: var(--text);
}

pre .kw { color: var(--accent); }
pre .str { color: #fbbf24; }
pre .cm { color: var(--muted); }
pre .out { color: #4ade80; }

code {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.1em 0.4em;
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--accent2);
}

/* COPY BUTTON */
.pre-wrap { position: relative; }

.copy-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  user-select: none;
}

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

.copy-btn.copied {
  color: var(--accent2);
  border-color: var(--accent2);
}

/* DIVIDER */
.divider {
  max-width: 1100px;
  margin: 0 auto;
  border: none;
  border-top: 1px solid var(--border);
}

/* QUICKSTART STEPS */
.qs-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.qs-step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  margin-bottom: 2.5rem;
}

.qs-num {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  background: rgba(124, 106, 247, 0.15);
  border: 1px solid rgba(124, 106, 247, 0.4);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.1rem;
}

.qs-content h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.4rem; }
.qs-content p { font-size: 0.9rem; color: var(--muted); margin-bottom: 0.75rem; }

/* FOOTER */
footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

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

.footer-meta a { color: var(--muted); text-decoration: none; }
.footer-meta a:hover { color: var(--accent); }

.footer-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
}

.footer-links a { color: var(--muted); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }

/* PAGE HERO (non-home pages) */
.page-hero {
  padding: 7rem 2rem 3rem;
  max-width: 1100px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}

.page-hero-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 0.75rem;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.page-hero p {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 640px;
  line-height: 1.7;
}

/* NAV TILES — home page section navigation */
.nav-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.nav-tile {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.25s ease,
              background 0.25s ease;
  will-change: transform;
  position: relative;
}

.nav-tile:hover {
  border-color: var(--accent);
  background: var(--surface2);
  transform: translateY(-14px);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 8px 16px rgba(0,0,0,0.35),
    0 28px 56px rgba(0,0,0,0.5),
    0 0 0 1px var(--accent),
    0 16px 48px rgba(124,106,247,0.35);
}

.nav-tile:active { transform: translateY(-8px); transition-duration: 0.1s; }

.nav-tile:hover .nav-tile-cta { color: var(--accent2); gap: 0.55rem; }

.nav-tile-icon { font-size: 2rem; margin-bottom: 1rem; display: block; }

.nav-tile-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 0.4rem;
}

.nav-tile h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.65rem;
  color: var(--text);
}

.nav-tile p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
  margin: 0;
}

.nav-tile-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 1.25rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  transition: gap 0.2s ease, color 0.2s ease;
}

/* SCROLL REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* PAGE TRANSITIONS (Chrome 126+, Safari 18.2+) */
@view-transition { navigation: auto; }

@keyframes vt-fade-out {
  to { opacity: 0; transform: translateY(-6px); }
}
@keyframes vt-fade-in {
  from { opacity: 0; transform: translateY(10px); }
}

::view-transition-old(root) {
  animation: vt-fade-out 0.18s ease forwards;
}
::view-transition-new(root) {
  animation: vt-fade-in 0.28s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* RESPONSIVE */
@media (max-width: 640px) {
  nav { padding: 0 1rem; }
  footer { flex-direction: column; text-align: center; }
  .output-grid { grid-template-columns: 1fr; }
}