:root {
  /* RA palette — navy & white */
  --navy: #0a2540;
  --navy-700: #103258;
  --navy-600: #1c4a7e;
  --navy-500: #2d6cb5;
  --blue: #3b82c4;
  --blue-soft: #e8f0f9;
  --accent: #0a2540; /* drives primary buttons & active tabs; changed by the accent toggle */
  --bg: #ffffff;
  --bg-tint: #f5f8fc;
  --panel: #ffffff;
  --line: #dce4ee;
  --text: #0a2540;
  --muted: #5b6b80;
  --green: #1f9d6b;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(10, 37, 64, 0.08);
  --shadow-lg: 0 16px 50px rgba(10, 37, 64, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(800px 460px at 85% -10%, rgba(45, 108, 181, 0.10), transparent 60%),
    radial-gradient(620px 460px at 0% 5%, rgba(10, 37, 64, 0.05), transparent 55%);
  pointer-events: none;
}

main, .hero, .footer { position: relative; z-index: 1; }

/* ---------- Hero ---------- */
.hero {
  padding: 84px 24px 48px;
  background: linear-gradient(180deg, var(--bg-tint), var(--bg));
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 840px; margin: 0 auto; text-align: center; }

.badge {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--navy-500);
  border: 1px solid var(--line);
  background: var(--blue-soft);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(32px, 6vw, 54px);
  line-height: 1.07;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.grad {
  background: linear-gradient(90deg, var(--navy-500), var(--blue));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: slide 7s linear infinite;
}
@keyframes slide { to { background-position: 200% 0; } }

.lede { font-size: 18px; color: var(--muted); max-width: 640px; margin: 0 auto 28px; }
.lede strong { color: var(--navy); }

.hero-progress { max-width: 360px; margin: 0 auto 26px; }
.hero-progress span { font-size: 13px; color: var(--muted); font-weight: 500; }
.bar { height: 9px; background: var(--blue-soft); border-radius: 999px; overflow: hidden; margin-top: 8px; border: 1px solid var(--line); }
.bar-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--navy), var(--navy-500)); transition: width 0.4s ease; }

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

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 22px rgba(10, 37, 64, 0.25); transition: background 0.25s ease, filter 0.15s ease, box-shadow 0.2s ease, transform 0.12s ease; }
.btn-primary:hover { filter: brightness(0.92); box-shadow: 0 10px 28px rgba(10, 37, 64, 0.32); }
.btn-ghost { background: #fff; color: var(--navy); border-color: var(--line); }
.btn-ghost:hover { background: var(--bg-tint); border-color: var(--navy-500); }

/* ---------- Sections ---------- */
.section { max-width: 920px; margin: 0 auto; padding: 56px 24px; }
.section-head { margin-bottom: 32px; }
.section-head h2 { font-size: 28px; margin: 0 0 8px; letter-spacing: -0.01em; color: var(--navy); }
.section-head p { color: var(--muted); margin: 0; }

/* ---------- Steps ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.step {
  display: flex;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.step:hover { box-shadow: var(--shadow-lg); }
.step.is-done { border-color: var(--green); }
.step.is-active { border-color: var(--navy-500); }

.step-check {
  flex: none;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: transparent;
  cursor: pointer;
  position: relative;
  margin-top: 2px;
  transition: all 0.2s ease;
}
.step-check:hover { border-color: var(--navy-500); }
.step.is-done .step-check { background: var(--green); border-color: var(--green); }
.step.is-done .step-check::after {
  content: "✓";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  color: #fff; font-weight: 800; font-size: 15px;
}

.step-num {
  flex: none;
  font-size: 13px; font-weight: 700; color: var(--navy-500);
  background: var(--blue-soft); border-radius: 8px;
  width: 28px; height: 28px; display: grid; place-items: center; margin-top: 2px;
}

.step-body { flex: 1; min-width: 0; }
.step-body h3 { margin: 0 0 6px; font-size: 18px; color: var(--navy); }
.step-body > p { margin: 0 0 14px; color: var(--muted); }

/* ---------- Code blocks ---------- */
.code {
  position: relative;
  background: var(--navy);
  border: 1px solid var(--navy-700);
  border-radius: 10px;
  overflow: hidden;
}
.code::before {
  content: attr(data-lang);
  position: absolute; top: 8px; left: 14px;
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: #8fa6c4;
}
.code pre { margin: 0; padding: 34px 16px 16px; overflow-x: auto; }
.code code { font-family: "SF Mono", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace; font-size: 13.5px; color: #eaf1fb; line-height: 1.7; }
.copy {
  position: absolute; top: 8px; right: 8px;
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: #cdd9ea; background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 6px;
  padding: 4px 9px; cursor: pointer; transition: all 0.15s ease;
}
.copy:hover { color: #fff; border-color: rgba(255, 255, 255, 0.4); background: rgba(255, 255, 255, 0.14); }
.copy.copied { color: #7be0b4; border-color: #7be0b4; }

/* ---------- Play grid ---------- */
.play-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 6px; color: var(--navy); }
.card > p { color: var(--muted); margin: 0 0 18px; }

.counter { display: flex; align-items: center; gap: 14px; }
.counter output { font-size: 32px; font-weight: 700; min-width: 56px; text-align: center; font-variant-numeric: tabular-nums; color: var(--navy); }
.counter-btn {
  width: 44px; height: 44px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--bg-tint);
  color: var(--navy); font-size: 22px; cursor: pointer; transition: all 0.15s ease;
}
.counter-btn:hover { border-color: var(--navy-500); background: var(--blue-soft); }
.counter-btn:active { transform: scale(0.94); }

.tabs { display: flex; gap: 6px; margin-bottom: 14px; }
.tab {
  flex: 1; padding: 8px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--line); background: var(--bg-tint); color: var(--muted);
  font-size: 13px; font-weight: 600; transition: all 0.15s ease;
}
.tab { transition: background 0.2s ease, color 0.15s ease, border-color 0.15s ease; }
.tab.is-active { background: var(--accent); color: #fff; border-color: var(--accent); }
.tab-panel { display: none; color: var(--muted); font-size: 14px; }
.tab-panel.is-active { display: block; }

/* ---------- Deploy ---------- */
.deploy { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.deploy-tabs { display: flex; border-bottom: 1px solid var(--line); background: var(--bg-tint); }
.dtab {
  flex: 1; padding: 16px; cursor: pointer; font-weight: 600; font-size: 14px;
  background: transparent; border: none; color: var(--muted);
  border-bottom: 2px solid transparent; transition: all 0.15s ease;
}
.dtab:hover { color: var(--navy); }
.dtab.is-active { color: var(--accent); border-bottom-color: var(--accent); background: #fff; }
.deploy-panel { display: none; padding: 24px; }
.deploy-panel.is-active { display: block; animation: fade 0.25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.deploy-panel p { color: var(--muted); }
.deploy-panel code { background: var(--blue-soft); color: var(--navy); padding: 2px 6px; border-radius: 5px; font-size: 13px; }

.deploy-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.pill { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; background: var(--bg-tint); }
.pill-green { color: var(--green); border-color: var(--green); background: #eafaf3; }

.mini { color: var(--muted); padding-left: 20px; margin: 0 0 14px; }
.mini li { margin-bottom: 6px; }
.mini strong, .mini code { color: var(--navy); }
.hint { font-size: 13.5px; margin-top: 12px; }

/* ---------- Compare table ---------- */
.compare { margin-top: 28px; }
.compare h3 { margin: 0 0 14px; color: var(--navy); }
table { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: 14px; }
thead th { background: var(--navy); color: #fff; font-size: 13px; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:nth-child(even) { background: var(--bg-tint); }
td:first-child { color: var(--muted); }

/* ---------- Footer ---------- */
.footer { text-align: center; padding: 48px 24px 64px; border-top: 1px solid var(--line); margin-top: 40px; color: var(--muted); background: var(--bg-tint); }
.footer code { background: var(--blue-soft); color: var(--navy); padding: 2px 6px; border-radius: 5px; font-size: 13px; }
.muted { font-size: 13px; }
kbd { background: #fff; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 6px; padding: 1px 7px; font-size: 12px; font-family: inherit; color: var(--navy); }

/* ---------- Mobile ---------- */

/* Never let anything cause a sideways scroll of the whole page. */
html, body { max-width: 100%; overflow-x: hidden; }
.code pre { -webkit-overflow-scrolling: touch; }

@media (max-width: 768px) {
  .hero { padding: 56px 20px 36px; }
  .lede { font-size: 16.5px; }
  .section { padding: 44px 20px; }
  .section-head h2 { font-size: 24px; }
  .step { padding: 16px; gap: 12px; }
  .deploy-panel { padding: 20px; }
  .card { padding: 18px; }
}

@media (max-width: 560px) {
  /* Stack the deploy tabs so each is easy to tap. */
  .deploy-tabs { flex-direction: column; }
  .dtab { border-bottom: 1px solid var(--line); }
  .dtab.is-active { border-bottom-color: var(--line); border-left: 3px solid var(--accent); }

  /* Full-width call-to-action buttons are easier to hit with a thumb. */
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }

  /* Roomier tap targets. */
  .btn { padding: 14px 22px; }
  .counter-btn { width: 48px; height: 48px; }

  /* Keep code readable without zooming. */
  .code code { font-size: 12.5px; }
  .code pre { padding: 32px 14px 14px; }

  /* Tighten the step row so the body has room on narrow screens. */
  .step-num { display: none; }
  .section-head h2 { font-size: 22px; }
  th, td { padding: 10px 12px; font-size: 13.5px; }
}