/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #030305;
  --bg2:        #08080e;
  --bg3:        #0e0e18;
  --surface:    #111119;
  --border:     #1a1a28;
  --border2:    #252538;
  --text:       #eaeaf0;
  --muted:      #6b7084;
  --accent:     #7c5cfc;
  --accent2:    #a78bfa;
  --accent3:    #38bdf8;
  --green:      #34d399;
  --orange:     #fb923c;
  --pink:       #f472b6;
  --red:        #ef4444;
  --radius:     14px;
  --radius-sm:  8px;
  --max:        1180px;
  --glow:       0 0 80px rgba(124, 92, 252, .08);
  --font:       "Inter", system-ui, -apple-system, sans-serif;
  --mono:       "JetBrains Mono", "Fira Code", ui-monospace, monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre {
  font-family: var(--mono);
  font-size: .85rem;
}

.mono { font-family: var(--mono); font-size: .82rem; color: var(--muted); }

/* ── Nav ──────────────────────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(3, 3, 5, .88);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.logo-icon {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
}

.nav-links {
  display: flex;
  gap: 22px;
  flex: 1;
}

.nav-links a {
  color: var(--muted);
  font-size: .88rem;
  font-weight: 500;
  transition: color .2s;
}

.nav-links a:hover { color: var(--text); text-decoration: none; }

.nav-cta { display: flex; gap: 10px; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
  white-space: nowrap;
  border: none;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #6341e0);
  color: #fff;
  box-shadow: 0 4px 24px rgba(124, 92, 252, .25);
}

.btn-primary:hover { box-shadow: 0 8px 32px rgba(124, 92, 252, .4); }

.btn-ghost {
  background: rgba(255, 255, 255, .03);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-ghost:hover { background: rgba(255, 255, 255, .06); border-color: var(--accent); }

.btn-lg { padding: 14px 28px; font-size: .95rem; border-radius: 10px; }

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 120px 28px 100px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -300px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 1000px;
  background: radial-gradient(ellipse, rgba(124, 92, 252, .06) 0%, rgba(56, 189, 248, .02) 40%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 880px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 24px;
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: 28px;
  background: rgba(255, 255, 255, .02);
}

.tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: .3; }
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -.03em;
}

.gradient {
  background: linear-gradient(135deg, var(--accent2), var(--accent3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.75;
}

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

/* ── Hero Code Block ──────────────────────────────────────────────────────── */
.hero-code, .session-code-block {
  text-align: left;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 640px;
  margin: 0 auto;
  box-shadow: var(--glow);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.code-dots {
  display: flex;
  gap: 6px;
}

.code-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border2);
}

.code-dots span:nth-child(1) { background: #ef4444; opacity: .6; }
.code-dots span:nth-child(2) { background: #fbbf24; opacity: .6; }
.code-dots span:nth-child(3) { background: #22c55e; opacity: .6; }

.code-filename {
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--muted);
}

.hero-code pre,
.session-code-block pre {
  padding: 20px 22px;
  margin: 0;
  overflow-x: auto;
  line-height: 1.7;
}

/* Syntax colors */
.c   { color: #4b5563; }
.kw  { color: #a78bfa; }
.str { color: #6ee7b7; }
.num { color: #fbbf24; }

/* ── Stats ────────────────────────────────────────────────────────────────── */
.stats {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 28px;
  background: var(--bg2);
}

.stats-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-n {
  display: block;
  font-size: 2.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.stat-l { font-size: .85rem; color: var(--muted); }

/* ── Section base ─────────────────────────────────────────────────────────── */
section { padding: 100px 28px; }

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 12px;
  text-align: center;
  letter-spacing: -.02em;
}

.section-sub {
  color: var(--muted);
  text-align: center;
  margin-bottom: 56px;
  font-size: 1.02rem;
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Infrastructure Grid ──────────────────────────────────────────────────── */
.infrastructure { background: var(--bg3); }

.infra-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.infra-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color .25s, transform .25s, box-shadow .25s;
}

.infra-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124, 92, 252, .06);
}

.infra-card--featured {
  grid-column: span 1;
  border-color: var(--border2);
  background: linear-gradient(135deg, rgba(124, 92, 252, .03), rgba(56, 189, 248, .02));
}

.infra-icon { font-size: 1.6rem; margin-bottom: 14px; }

.infra-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.infra-card p { font-size: .87rem; color: var(--muted); line-height: 1.6; margin-bottom: 14px; }

.infra-tag {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--accent2);
  padding: 4px 10px;
  background: rgba(124, 92, 252, .08);
  border-radius: 5px;
  display: inline-block;
}

/* ── Contract Table ───────────────────────────────────────────────────────── */
.contracts-section { background: var(--bg); }

.contract-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg2);
  margin-bottom: 28px;
}

.contract-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .88rem;
}

.contract-table th,
.contract-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.contract-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  background: var(--surface);
}

.contract-table tr:last-child td { border-bottom: none; }
.contract-table tbody tr:hover td { background: rgba(124, 92, 252, .03); }

.contract-table code {
  color: var(--text);
  font-weight: 600;
}

/* Chain badges */
.chain-badges {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.chain-badge {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--bg2);
}

/* ── SDK Grid ─────────────────────────────────────────────────────────────── */
.sdk-section { background: var(--bg3); }

.sdk-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.sdk-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color .2s, transform .2s;
}

.sdk-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.sdk-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.sdk-module-icon { font-size: 1.3rem; }

.sdk-card h3 {
  font-family: var(--mono);
  font-size: .9rem;
  font-weight: 600;
  color: var(--accent2);
}

.sdk-card p { font-size: .85rem; color: var(--muted); line-height: 1.55; margin-bottom: 14px; }

.sdk-code {
  padding: 8px 12px;
  background: var(--surface);
  border-radius: 6px;
  border: 1px solid var(--border);
  overflow-x: auto;
}

.sdk-code code { font-size: .78rem; color: var(--text); }

/* ── Interactions Demo ────────────────────────────────────────────────────── */
.interactions-section { background: var(--bg); }

.interaction-demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.demo-panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.demo-panel h3 {
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--accent2);
}

.demo-code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow-x: auto;
}

.demo-code pre {
  padding: 16px 18px;
  margin: 0;
  line-height: 1.65;
  font-size: .8rem;
}

/* ── Gas Sponsorship ──────────────────────────────────────────────────────── */
.gas-section { background: var(--bg3); }

.gas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}

.gas-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color .2s;
}

.gas-card:hover { border-color: var(--accent); }

.gas-icon { font-size: 1.5rem; margin-bottom: 12px; }
.gas-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.gas-card p { font-size: .85rem; color: var(--muted); margin-bottom: 14px; }

.gas-endpoint {
  font-family: var(--mono);
  font-size: .75rem;
  padding: 6px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
}

.gas-endpoint .method {
  color: var(--green);
  font-weight: 600;
  margin-right: 6px;
}

/* Gas flow */
.gas-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.flow-step {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-size: .84rem;
}

.flow-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .75rem;
  flex-shrink: 0;
}

.flow-arrow { color: var(--muted); font-size: 1.2rem; }

/* ── Sessions ─────────────────────────────────────────────────────────────── */
.sessions-section { background: var(--bg); }

.session-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.session-feature {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
}

.sf-icon { font-size: 1.5rem; margin-bottom: 10px; }
.session-feature h4 { font-size: .9rem; font-weight: 600; margin-bottom: 6px; }
.session-feature p { font-size: .82rem; color: var(--muted); }

.session-code-block { max-width: 700px; margin: 0 auto; }

/* ── Backend API ──────────────────────────────────────────────────────────── */
.backend-section { background: var(--bg3); }

.api-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.api-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.api-card h4 {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.api-endpoints { display: flex; flex-direction: column; gap: 8px; }

.api-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .82rem;
}

.api-row code {
  color: var(--muted);
  font-size: .78rem;
}

.method {
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  flex-shrink: 0;
}

.method.post, .method { background: rgba(52, 211, 153, .1); color: var(--green); }
.method.get { background: rgba(56, 189, 248, .1); color: var(--accent3); }
.method.del { background: rgba(239, 68, 68, .1); color: var(--red); }
.method.patch { background: rgba(251, 146, 60, .1); color: var(--orange); }

.backend-stack {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.stack-badge {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--surface);
}

/* ── Get Started Steps ────────────────────────────────────────────────────── */
.get-started-section { background: var(--bg); }

.steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.step-n {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .9rem;
  flex-shrink: 0;
}

.step-content { flex: 1; min-width: 0; }
.step-content h3 { font-size: .95rem; margin-bottom: 10px; }

.step-code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  overflow-x: auto;
}

.step-code pre { margin: 0; line-height: 1.6; }
.step-code code { font-size: .8rem; }

/* ── Docs Grid ────────────────────────────────────────────────────────────── */
.docs-section { background: var(--bg3); }

.doc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.doc-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  color: var(--text);
  transition: border-color .2s, transform .2s;
  text-decoration: none;
}

.doc-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
}

.doc-icon { font-size: 1.4rem; }
.doc-card strong { font-size: .92rem; }
.doc-card span { font-size: .82rem; color: var(--muted); }

/* ── CTA ──────────────────────────────────────────────────────────────────── */
.cta-section {
  background: var(--bg);
  text-align: center;
}

.cta-box {
  max-width: 660px;
  margin: 0 auto;
  padding: 60px 44px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(124, 92, 252, .04), rgba(56, 189, 248, .02));
  box-shadow: var(--glow);
}

.cta-box h2 { margin-bottom: 16px; }
.cta-box p { color: var(--muted); margin-bottom: 32px; font-size: 1rem; }

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

/* ── Footer ───────────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 28px;
  background: var(--bg);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: .84rem;
  color: var(--muted);
}

.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--muted); transition: color .2s; }
.footer-links a:hover { color: var(--text); text-decoration: none; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .infra-grid { grid-template-columns: repeat(2, 1fr); }
  .sdk-grid { grid-template-columns: repeat(2, 1fr); }
  .gas-grid { grid-template-columns: repeat(2, 1fr); }
  .session-features { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hero { padding: 80px 20px 60px; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .infra-grid { grid-template-columns: 1fr; }
  .sdk-grid { grid-template-columns: 1fr; }
  .interaction-demo { grid-template-columns: 1fr; }
  .gas-grid { grid-template-columns: 1fr; }
  .session-features { grid-template-columns: 1fr; }
  .api-grid { grid-template-columns: 1fr; }
  .doc-grid { grid-template-columns: 1fr; }
  section { padding: 72px 20px; }
  .gas-flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
}

@media (max-width: 480px) {
  .stats-inner { grid-template-columns: 1fr; gap: 20px; }
  .hero h1 { font-size: 1.9rem; }
  .cta-box { padding: 40px 24px; }
}