/* OASForge — static content pages (guide, FAQ, landing pages).
   Deliberately dark-only: these pages mirror the app's default look. */
:root {
  color-scheme: dark;
  --bg: #0d1117;
  --panel: #161b22;
  --border: #30363d;
  --text: #c9d1d9;
  --muted: #8b949e;
  --accent: #58a6ff;
  --green: #49cc90;
  --blue: #61affe;
  --orange: #fca130;
  --purple: #bc8cff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(22, 27, 34, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 5;
}
.brand .oas { color: var(--accent); }
.site-header .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
}
.site-header .brand:hover { text-decoration: none; }
.site-header nav {
  margin-left: auto;
  display: flex;
  gap: 18px;
  font-size: 14.5px;
  flex-wrap: wrap;
}
.site-header nav a { color: var(--muted); }
.site-header nav a:hover { color: var(--text); text-decoration: none; }
.site-header nav a.cta {
  color: #0d1117;
  background: var(--accent);
  padding: 5px 14px;
  border-radius: 6px;
  font-weight: 600;
}

main.content {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}
main.content h1 { font-size: 30px; line-height: 1.25; margin: 0 0 18px; letter-spacing: -0.3px; }
main.content h2 { font-size: 21px; margin: 34px 0 12px; letter-spacing: -0.2px; }
main.content p { margin: 12px 0; }
main.content ul { padding-left: 22px; }
main.content li { margin: 8px 0; }
main.content code, main.content kbd {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  font: 13.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
main.content kbd { border-bottom-width: 2px; }
main.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 15px;
}
main.content th, main.content td {
  border: 1px solid var(--border);
  padding: 9px 12px;
  text-align: left;
  vertical-align: top;
}
main.content th { background: var(--panel); }
main.content .table-wrap { overflow-x: auto; }

.cta-block {
  margin: 40px 0 8px;
  padding: 26px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
}
.cta-block p { margin: 0 0 16px; color: var(--muted); }
.cta-block a.button {
  display: inline-block;
  background: var(--accent);
  color: #0d1117;
  font-weight: 700;
  padding: 11px 26px;
  border-radius: 8px;
  font-size: 16px;
}
.cta-block a.button:hover { text-decoration: none; filter: brightness(1.1); }

/* Guide page */
.guide-toc {
  columns: 2;
  gap: 32px;
  padding: 18px 22px;
  margin: 22px 0 8px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  list-style: none;
}
.guide-toc li { margin: 6px 0; break-inside: avoid; }
.guide-toc .num { color: var(--muted); font: 12.5px ui-monospace, monospace; margin-right: 8px; }
.g-section { border-top: 1px solid var(--border); margin-top: 36px; padding-top: 10px; }
.g-section h2 .g-num { color: var(--accent); font: 15px ui-monospace, monospace; margin-right: 10px; }

/* FAQ */
.faq-item { border-top: 1px solid var(--border); padding: 18px 0 6px; }
.faq-item h2 { margin: 0 0 8px; font-size: 18.5px; }

/* Landing page */
body.landing-bg {
  background:
    radial-gradient(900px 480px at 50% -8%, rgba(88, 166, 255, 0.13), transparent 62%),
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.035) 1px, transparent 1.6px),
    var(--bg);
  background-size: auto, 26px 26px, auto;
}
main.content.landing { max-width: 1060px; padding-top: 30px; }
.landing section { margin-top: 88px; }
.landing h2 { font-size: 27px; letter-spacing: -0.5px; margin: 0 0 20px; }
.h-num {
  font: 600 13px "JetBrains Mono", ui-monospace, monospace;
  color: var(--accent);
  letter-spacing: 1.5px;
  margin-right: 14px;
  vertical-align: 4px;
}
.landing .hero { text-align: center; padding: 42px 0 0; margin-top: 0; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2px;
  color: var(--muted);
  border: 1px solid var(--border);
  background: rgba(22, 27, 34, 0.7);
  padding: 7px 16px;
  border-radius: 999px;
  margin: 0 0 28px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; }
.eyebrow .dot.g { background: var(--green); }
.eyebrow .dot.b { background: var(--blue); }
.eyebrow .dot.o { background: var(--orange); }
.eyebrow .sep { width: 1px; height: 13px; background: var(--border); margin: 0 5px; }
.landing .hero h1 {
  font-size: 54px;
  font-weight: 800;
  letter-spacing: -1.8px;
  line-height: 1.1;
  margin: 0 0 22px;
  color: #e6edf3;
}
.grad {
  background: linear-gradient(92deg, var(--accent), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.landing .lede { max-width: 830px; margin: 0 auto 32px; font-size: 18px; color: var(--muted); }
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-ctas .button {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: linear-gradient(180deg, #6cb2ff, var(--accent));
  color: #0d1117;
  font-weight: 700;
  padding: 13px 30px;
  border-radius: 10px;
  font-size: 16.5px;
  box-shadow: 0 8px 28px rgba(88, 166, 255, 0.28);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.hero-ctas .button.ghost {
  background: rgba(22, 27, 34, 0.7);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}
.hero-ctas .button:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 12px 34px rgba(88, 166, 255, 0.36); }
.hero-ctas .button.ghost:hover { box-shadow: none; border-color: #3d444d; }
.hero-note {
  margin-top: 24px;
  font-size: 13.5px;
  color: var(--muted);
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.hero-note code { font-size: 12.5px; }
.hero-note .arrow { color: var(--green); font-weight: 700; }
.frame {
  margin: 56px 0 0;
  border: 1px solid #2a3038;
  border-radius: 14px;
  overflow: hidden;
  background: var(--panel);
  box-shadow:
    0 0 0 1px rgba(88, 166, 255, 0.05),
    0 30px 90px rgba(0, 0, 0, 0.55),
    0 0 130px rgba(88, 166, 255, 0.08);
}
.frame-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  background: #10151c;
}
.frame-bar span { width: 11px; height: 11px; border-radius: 50%; }
.frame-bar span:nth-child(1) { background: #f85149; }
.frame-bar span:nth-child(2) { background: #d29922; }
.frame-bar span:nth-child(3) { background: #3fb950; }
.frame-bar em {
  font: 500 12px "JetBrains Mono", ui-monospace, monospace;
  font-style: normal;
  color: var(--muted);
  margin-left: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 12px;
}
.frame img { width: 100%; height: auto; display: block; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(235px, 1fr)); gap: 14px; margin-top: 26px; }
.feature {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 55%), var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.feature:hover { transform: translateY(-3px); border-color: #3d444d; }
.feature h3 { margin: 0 0 8px; font-size: 16px; letter-spacing: -0.2px; }
.feature p { margin: 0; font-size: 14px; color: var(--muted); }
.f-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 15px;
  border: 1px solid;
}
.f-icon.green { color: var(--green); background: rgba(73, 204, 144, 0.08); border-color: rgba(73, 204, 144, 0.28); }
.f-icon.blue { color: var(--blue); background: rgba(97, 175, 254, 0.08); border-color: rgba(97, 175, 254, 0.28); }
.f-icon.orange { color: var(--orange); background: rgba(252, 161, 48, 0.08); border-color: rgba(252, 161, 48, 0.28); }
.f-icon.purple { color: var(--purple); background: rgba(188, 140, 255, 0.08); border-color: rgba(188, 140, 255, 0.28); }
.privacy {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 20px 44px;
  align-items: center;
  background:
    radial-gradient(420px 200px at 12% 0%, rgba(73, 204, 144, 0.07), transparent),
    var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 40px;
}
.privacy-text p { color: var(--muted); margin-bottom: 0; }
.privacy-list { list-style: none; margin: 0; padding: 0; }
.privacy-list li { position: relative; padding-left: 32px; margin: 13px 0; font-size: 15.5px; }
.privacy-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(73, 204, 144, 0.1);
  border: 1px solid rgba(73, 204, 144, 0.45);
}
.privacy-list li::after {
  content: "";
  position: absolute;
  left: 5.5px;
  top: 9px;
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--green);
  border-bottom: 2px solid var(--green);
  transform: rotate(-45deg);
}
.steps { counter-reset: step; list-style: none; padding: 0; max-width: 800px; margin: 26px 0 0; }
.steps li { margin: 0; padding: 0 0 30px 60px; position: relative; }
.steps li:last-child { padding-bottom: 0; }
.steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: -2px;
  width: 38px;
  height: 38px;
  line-height: 36px;
  text-align: center;
  border-radius: 50%;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--accent);
  font: 600 13px "JetBrains Mono", ui-monospace, monospace;
}
.steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 19px;
  top: 40px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(var(--border), transparent);
}
.learn-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 4px 26px;
}
.learn-list li { margin: 0; padding: 13px 16px; border-radius: 10px; transition: background 0.15s ease; }
.learn-list li:hover { background: var(--panel); }
.learn-list a { font-weight: 600; }
.learn-list .lnk-arrow { opacity: 0; transition: opacity 0.15s ease; }
.learn-list li:hover .lnk-arrow { opacity: 1; }
.learn-list span { display: block; font-size: 14px; color: var(--muted); }
.landing .faq-item h3 { margin: 0 0 8px; font-size: 17.5px; }
.landing .cta-block {
  margin-top: 88px;
  padding: 48px;
  background:
    radial-gradient(640px 220px at 50% -20%, rgba(88, 166, 255, 0.12), transparent),
    var(--panel);
  border-radius: 16px;
}
.landing .cta-block h2 { margin: 0 0 10px; }
@media (max-width: 700px) {
  .landing .hero h1 { font-size: 33px; letter-spacing: -1px; }
  .privacy { grid-template-columns: 1fr; padding: 26px; }
  .landing section { margin-top: 60px; }
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--panel);
  padding: 30px 24px;
  font-size: 14px;
  color: var(--muted);
}
.site-footer .cols {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 28px 56px;
}
.site-footer h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.6px; margin: 0 0 10px; color: var(--text); }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 6px 0; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); }
.site-footer .legal { max-width: 860px; margin: 26px auto 0; border-top: 1px solid var(--border); padding-top: 16px; }

@media (max-width: 640px) {
  .guide-toc { columns: 1; }
  main.content h1 { font-size: 25px; }
}