:root {
  --bg: #0f1720;
  --bg-alt: #131e2a;
  --surface: #1b2735;
  --surface-2: #22303f;
  --border: #2c3d4f;
  --text: #e8eef4;
  --text-dim: #a9b6c4;
  --aws-orange: #ff9900;
  --aws-orange-dark: #e88b00;
  --teal: #2ec4b6;
  --red: #ff6b6b;
  --green: #4ade80;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

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

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 23, 32, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; }
.brand:hover { text-decoration: none; }
.brand-mark {
  background: var(--aws-orange);
  color: #0f1720;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}
.brand-text { font-size: 1rem; }
.site-nav { margin-left: auto; display: flex; gap: 20px; flex-wrap: wrap; }
.site-nav a { color: var(--text-dim); font-size: 0.92rem; font-weight: 500; }
.site-nav a:hover { color: var(--aws-orange); text-decoration: none; }
.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.2rem;
  border-radius: 8px;
  padding: 4px 10px;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(900px 400px at 80% -10%, rgba(255, 153, 0, 0.18), transparent 60%),
    radial-gradient(700px 400px at 0% 10%, rgba(46, 196, 182, 0.12), transparent 55%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 90px 20px 80px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.78rem;
  color: var(--aws-orange);
  margin: 0 0 12px;
  font-weight: 700;
}
.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 18px;
  letter-spacing: -0.5px;
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 0 32px;
}
.hero-sub strong { color: var(--text); }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.08s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--aws-orange); color: #0f1720; }
.btn-primary:hover { background: var(--aws-orange-dark); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--aws-orange); color: var(--aws-orange); }

/* ---------- Sections ---------- */
.section { padding: 74px 0; }
.section-alt { background: var(--bg-alt); }
.section-inner { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.kicker {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 10px;
}
.section h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.3rem);
  margin: 0 0 16px;
  letter-spacing: -0.3px;
}
.lead { color: var(--text-dim); font-size: 1.08rem; max-width: 760px; margin: 0 0 34px; }

/* ---------- Grids & cards ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
}
.card-icon { font-size: 1.8rem; margin-bottom: 10px; }
.card h3 { margin: 0 0 8px; font-size: 1.12rem; }
.card p { margin: 0; color: var(--text-dim); font-size: 0.96rem; }

.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--aws-orange);
  border-radius: var(--radius);
  padding: 24px;
}
.feature h3 { margin: 0 0 10px; font-size: 1.15rem; display: flex; align-items: baseline; gap: 10px; }
.feature .num { color: var(--aws-orange); font-weight: 800; font-size: 0.95rem; }
.feature p { margin: 0; color: var(--text-dim); }

/* ---------- Split (why) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.split-col {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.split-col h3 { margin: 0 0 14px; font-size: 1.15rem; }
.split-col h3.danger { color: var(--red); }
.split-col h3.safe { color: var(--green); }
.check-list { list-style: none; margin: 0; padding: 0; }
.check-list li { padding: 6px 0 6px 28px; position: relative; color: var(--text-dim); }
.check-list.bad li::before { content: "\2717"; position: absolute; left: 0; color: var(--red); font-weight: 700; }
.check-list.good li::before { content: "\2713"; position: absolute; left: 0; color: var(--green); font-weight: 700; }

/* ---------- Flow ---------- */
.flow {
  display: flex;
  align-items: stretch;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.flow-step {
  flex: 1 1 150px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
  text-align: center;
}
.flow-badge {
  width: 34px; height: 34px;
  margin: 0 auto 10px;
  border-radius: 50%;
  background: var(--aws-orange);
  color: #0f1720;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.flow-step h4 { margin: 0 0 6px; font-size: 1rem; }
.flow-step p { margin: 0; font-size: 0.85rem; color: var(--text-dim); }
.flow-arrow { display: flex; align-items: center; color: var(--aws-orange); font-size: 1.4rem; }

.callout {
  background: rgba(46, 196, 182, 0.1);
  border: 1px solid rgba(46, 196, 182, 0.35);
  border-radius: var(--radius);
  padding: 18px 20px;
  color: var(--text);
}
.callout code, code {
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.9em;
  color: var(--aws-orange);
}

/* ---------- Demo ---------- */
.demo {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.demo-controls {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 20px;
  margin-bottom: 18px;
}
.toggle { display: flex; align-items: center; gap: 10px; color: var(--text-dim); font-size: 0.95rem; cursor: pointer; }
.toggle input { width: 18px; height: 18px; accent-color: var(--aws-orange); cursor: pointer; }
.demo-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 12px 14px;
  font-size: 0.98rem;
  font-family: inherit;
  resize: vertical;
}
.demo-input:focus { outline: none; border-color: var(--aws-orange); }
.demo-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 14px; }
.demo-samples { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; color: var(--text-dim); font-size: 0.85rem; }
.chip {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  cursor: pointer;
}
.chip:hover { border-color: var(--aws-orange); color: var(--aws-orange); }

.demo-result {
  margin-top: 20px;
  border-radius: var(--radius);
  padding: 18px 20px;
  border: 1px solid var(--border);
  background: var(--bg);
}
.demo-result.blocked { border-color: rgba(255, 107, 107, 0.5); background: rgba(255, 107, 107, 0.08); }
.demo-result.allowed { border-color: rgba(74, 222, 128, 0.5); background: rgba(74, 222, 128, 0.08); }
.demo-result h4 { margin: 0 0 10px; font-size: 1.05rem; }
.demo-result .verdict { font-weight: 700; }
.demo-result.blocked .verdict { color: var(--red); }
.demo-result.allowed .verdict { color: var(--green); }
.demo-result ul { margin: 10px 0 0; padding-left: 20px; color: var(--text-dim); }
.demo-result .masked { color: var(--text); background: var(--surface-2); padding: 10px 12px; border-radius: 8px; margin-top: 12px; font-size: 0.92rem; }

/* ---------- Steps ---------- */
.steps { counter-reset: step; list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.steps li {
  counter-increment: step;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px 18px 64px;
  position: relative;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 18px; top: 18px;
  width: 30px; height: 30px;
  background: var(--aws-orange);
  color: #0f1720;
  border-radius: 8px;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.steps h4 { margin: 0 0 4px; font-size: 1.02rem; }
.steps p { margin: 0; color: var(--text-dim); font-size: 0.95rem; }

/* ---------- Lab tabs & panels ---------- */
.lab-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}
.lab-tab {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 9px 15px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: 0.15s;
}
.lab-tab:hover { border-color: var(--aws-orange); color: var(--text); }
.lab-tab.active { background: var(--aws-orange); color: #0f1720; border-color: var(--aws-orange); }

.lab-panel { display: none; }
.lab-panel.active { display: block; animation: fade 0.25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.lab-panel > h3 { margin: 0 0 8px; font-size: 1.35rem; }
.lab-panel > p { color: var(--text-dim); }

/* ---------- Code blocks ---------- */
.code {
  background: #0b1219;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow-x: auto;
  margin: 16px 0;
}
.code code {
  background: none;
  color: #d6e2ee;
  padding: 0;
  font-family: "SF Mono", "Fira Code", Menlo, Consolas, monospace;
  font-size: 0.86rem;
  line-height: 1.55;
  white-space: pre;
}

.lab-links {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.lab-links a {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
}
.lab-links a:hover { border-color: var(--aws-orange); text-decoration: none; }

/* ---------- Link cards ---------- */
.link-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  color: var(--text);
}
.link-card:hover { border-color: var(--aws-orange); text-decoration: none; transform: translateY(-2px); transition: 0.15s; }
.link-card h3 { margin: 0 0 6px; font-size: 1.08rem; color: var(--aws-orange); }
.link-card p { margin: 0; color: var(--text-dim); font-size: 0.94rem; }
.disclaimer { margin-top: 26px; font-size: 0.85rem; color: var(--text-dim); max-width: 760px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); background: var(--bg-alt); }
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 20px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .grid-2, .grid-3, .split, .demo-controls { grid-template-columns: 1fr; }
  .flow-arrow { transform: rotate(90deg); }
  .flow-step { flex-basis: 100%; }
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 6px;
    margin: 12px 0 0;
  }
  .site-nav.open { display: flex; }
  .topbar-inner { flex-wrap: wrap; }
}