/* Long-form tutorial pages — same palette as the portfolio, optimised for reading */
:root {
  --bg: #0f0a1e;
  --bg2: #16123a;
  --card: rgba(255, 255, 255, 0.04);
  --border: rgba(167, 139, 250, 0.25);
  --text: #e5e7eb;
  --muted: #b3b9c6;
  --accent: #a78bfa;
  --accent2: #7b2fff;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #f87171;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 10% -10%, rgba(123, 47, 255, 0.25), transparent 60%),
              radial-gradient(900px 500px at 100% 0%, rgba(56, 152, 236, 0.18), transparent 60%),
              var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

a { color: var(--accent); text-decoration: underline; text-decoration-color: rgba(167, 139, 250, 0.45); text-underline-offset: 3px; }
a:hover, a:focus-visible { color: #d6ccff; text-decoration-color: currentColor; }

.skip-link { position: absolute; left: -999px; top: 8px; background: var(--accent2); color: #fff; padding: 8px 14px; border-radius: 6px; z-index: 10; }
.skip-link:focus { left: 8px; }

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(15, 10, 30, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 5;
}
.topbar img { width: 40px; height: 40px; border-radius: 50%; border: 2px solid var(--accent); }
.topbar .who { display: flex; flex-direction: column; line-height: 1.2; }
.topbar .who strong { font-size: 15px; }
.topbar .who span { font-size: 12px; color: var(--muted); }
.topbar nav { margin-left: auto; display: flex; gap: 14px; flex-wrap: wrap; font-size: 14px; }
.topbar nav a { text-decoration: none; color: var(--muted); }
.topbar nav a:hover { color: #fff; }

main { max-width: 820px; margin: 0 auto; padding: 32px 20px 64px; }

.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }

h1 { font-size: clamp(1.9rem, 4.5vw, 2.7rem); line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 14px; }
h1 .grad { background: linear-gradient(90deg, #c4b5fd, #60a5fa); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.15rem; color: var(--muted); margin: 0 0 24px; }
.meta { display: flex; flex-wrap: wrap; gap: 10px 18px; font-size: 13px; color: var(--muted); margin-bottom: 28px; }
.meta span::before { content: '• '; color: var(--accent); }

h2 { font-size: 1.55rem; margin: 56px 0 14px; padding-top: 8px; letter-spacing: -0.01em; }
h2 .num { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--accent2); color: #fff; font-size: 1rem; margin-right: 12px; vertical-align: middle; box-shadow: 0 0 0 5px rgba(123, 47, 255, 0.25); }
h3 { font-size: 1.15rem; margin: 30px 0 10px; color: #d6ccff; }

p, li { color: var(--text); }
ul, ol { padding-left: 1.3em; }
li { margin: 6px 0; }
strong { color: #fff; }
kbd, code { font-family: 'JetBrains Mono', SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; }
code { background: rgba(255, 255, 255, 0.08); padding: 2px 6px; border-radius: 5px; color: #e9d5ff; }
kbd { background: #1f1b3a; border: 1px solid var(--border); border-bottom-width: 2px; padding: 2px 7px; border-radius: 6px; }

.box {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 18px 0;
}
.box.tip { border-color: rgba(52, 211, 153, 0.45); background: rgba(52, 211, 153, 0.07); }
.box.warn { border-color: rgba(251, 191, 36, 0.45); background: rgba(251, 191, 36, 0.07); }
.box.danger { border-color: rgba(248, 113, 113, 0.45); background: rgba(248, 113, 113, 0.07); }
.box > :first-child { margin-top: 0; }
.box > :last-child { margin-bottom: 0; }
.box .label { display: block; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }

/* Table of contents */
.toc { border: 1px solid var(--border); border-radius: 12px; padding: 16px 20px; background: var(--card); }
.toc strong { display: block; margin-bottom: 8px; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.toc ol { margin: 0; padding-left: 1.2em; columns: 2; column-gap: 24px; }
.toc li { break-inside: avoid; margin: 4px 0; font-size: 15px; }
.toc a { text-decoration: none; }

/* Figures */
figure { margin: 22px 0; }
figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1100 / 640;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
  background: #120d2b;
}
figcaption { font-size: 13.5px; color: var(--muted); margin-top: 8px; text-align: center; }
figcaption b { color: var(--accent); font-weight: 600; }

/* Code block with copy button */
.codeblock { position: relative; margin: 18px 0; }
.codeblock pre {
  margin: 0;
  background: #0a0820;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 18px 18px 18px 18px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  color: #e5e7eb;
}
.codeblock pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
.codeblock .copy {
  position: absolute; top: 10px; right: 10px;
  border: 1px solid var(--border); background: rgba(255, 255, 255, 0.06); color: var(--text);
  font: 600 12px/1 'Inter', sans-serif; padding: 8px 12px; border-radius: 8px; cursor: pointer;
}
.codeblock .copy:hover { background: rgba(167, 139, 250, 0.2); }
.codeblock .copy.done { border-color: var(--green); color: var(--green); }

/* Checklist */
.checklist { list-style: none; padding: 0; }
.checklist li { padding-left: 32px; position: relative; }
.checklist li::before { content: '✓'; position: absolute; left: 6px; top: 0; color: var(--green); font-weight: 700; }

/* FAQ */
details { border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin: 10px 0; background: var(--card); }
summary { cursor: pointer; font-weight: 600; color: #fff; }
details[open] summary { margin-bottom: 8px; }

/* CTA */
.cta {
  margin-top: 56px;
  border-radius: 16px;
  padding: 26px 24px;
  background: linear-gradient(135deg, rgba(123, 47, 255, 0.25), rgba(56, 152, 236, 0.18));
  border: 1px solid var(--border);
}
.cta h2 { margin-top: 0; font-size: 1.35rem; }
.cta .buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.btn { display: inline-block; padding: 11px 18px; border-radius: 10px; text-decoration: none; font-weight: 600; font-size: 14.5px; border: 1px solid var(--border); color: #fff; }
.btn.primary { background: var(--accent2); border-color: transparent; }
.btn:hover { background: rgba(167, 139, 250, 0.2); }
.btn.primary:hover { background: #8f4bff; }

footer.site { text-align: center; font-size: 13px; color: var(--muted); padding: 28px 20px 40px; border-top: 1px solid rgba(255, 255, 255, 0.08); }
footer.site a { color: var(--muted); }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .topbar nav { font-size: 13px; gap: 10px; }
  .toc ol { columns: 1; }
  h2 { font-size: 1.35rem; }
  h2 .num { width: 32px; height: 32px; font-size: 0.9rem; }
}

@media print {
  body { background: #fff; color: #000; }
  .topbar, .cta, .copy, .skip-link { display: none; }
  a { color: #000; }
}