/* ================= Design tokens ================= */
:root {
  --bg: #0b0d10;
  --bg-alt: #101318;
  --surface: #14181e;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e9e6df;        /* ivory */
  --text-dim: #9aa3ad;
  --accent: #ff9900;      /* AWS orange */
  --accent-soft: rgba(255, 153, 0, 0.12);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;
  --radius: 10px;
  --container: 1100px;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}
.container.narrow { max-width: 720px; }
.center { text-align: center; }

/* ================= Accessibility ================= */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: #000;
  padding: 0.5rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ================= Header ================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 13, 16, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand {
  font-family: var(--font-display);
  font-size: 1.25rem; font-weight: 600;
  color: var(--text); text-decoration: none;
}
.site-header nav { display: flex; gap: clamp(0.75rem, 2.5vw, 1.75rem); align-items: center; }
.site-header nav a {
  color: var(--text-dim); text-decoration: none;
  font-size: 0.9rem; font-weight: 500;
  transition: color 0.15s;
}
.site-header nav a:hover { color: var(--text); }
.nav-cta {
  color: var(--accent) !important;
  border: 1px solid var(--accent);
  padding: 0.4rem 0.9rem; border-radius: 999px;
}
.nav-cta:hover { background: var(--accent-soft); }

/* ================= Hero ================= */
.hero { padding: clamp(4.5rem, 12vw, 8.5rem) 0 clamp(3.5rem, 8vw, 6rem); }
.eyebrow {
  color: var(--accent);
  font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 1rem;
}
h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 600; line-height: 1.12;
  letter-spacing: -0.01em;
}
h1 .accent { color: var(--accent); }
.lede {
  color: var(--text-dim);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  max-width: 34rem;
  margin-top: 1.25rem;
}
.hero-actions { display: flex; gap: 0.875rem; flex-wrap: wrap; margin-top: 2rem; }

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600; font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s, background 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #0b0d10; }
.btn-primary:hover { background: #ffad33; }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-badges {
  display: flex; gap: 0.75rem; flex-wrap: wrap;
  list-style: none; margin-top: 2.5rem;
}
.hero-badges li {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.82rem; color: var(--text-dim);
}

/* ================= Sections ================= */
.section { padding: clamp(3.5rem, 9vw, 6rem) 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 600;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}
.section p + p { margin-top: 1rem; }

/* ================= Grid & cards ================= */
.grid { display: grid; gap: 1.25rem; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.15s;
}
.card:hover { border-color: rgba(255, 153, 0, 0.35); }
.card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.5rem; }
.card p { color: var(--text-dim); font-size: 0.92rem; }

.project .tag {
  display: inline-block;
  background: var(--accent-soft); color: var(--accent);
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.2rem 0.6rem; border-radius: 999px;
  margin-bottom: 0.75rem;
}
.meta { font-size: 0.82rem; color: var(--text-dim); margin-top: 0.75rem; }

/* ================= Footer ================= */
.site-footer { border-top: 1px solid var(--border); padding: 2rem 0; }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 0.75rem;
  color: var(--text-dim); font-size: 0.85rem;
}
.site-footer a { color: var(--text-dim); }
.site-footer a:hover { color: var(--accent); }

/* ================= Breakpoints ================= */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .grid-4 { grid-template-columns: 1fr; }
  .site-header nav a:not(.nav-cta) { display: none; }
  .footer-inner { flex-direction: column; text-align: center; }
}