/* Goldmap EA client tutorial portal. Mobile-first, no framework. */
:root {
  --navy: #070b1d;
  --card: #0c1230;
  --card-2: #111941;
  --red: #d91f2b;
  --red-hi: #ef2a37;
  --red-text: #ff7a83;
  --ink: #eef0f8;
  --ink-2: #c6cbe2;
  --muted: #9aa3c7;
  --line: rgba(255, 255, 255, 0.1);
  --ok: #4ade80;
  --todo: #fbbf24;
  --tg: #229ed9;
  --radius: 16px;
  --tap: 48px;
  --header-h: 112px;
}
@media (min-width: 900px) { :root { --header-h: 68px; } }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body { margin: 0; background: var(--navy); color: var(--ink); font: 400 16px/1.6 Inter, system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; }
a { color: var(--red-text); }
h1, h2, h3, h4 { line-height: 1.2; letter-spacing: -0.01em; margin: 0; }
h2 { font-size: 26px; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 16px; }
:focus-visible { outline: 3px solid #fff; outline-offset: 3px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: #fff; color: var(--navy); padding: 10px 14px; border-radius: 8px; font-weight: 700; }
.skip:focus { left: 8px; }
code { font: 0.92em ui-monospace, Consolas, monospace; background: #050817; border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; color: #ffd3d6; overflow-wrap: anywhere; }
strong { color: #fff; font-weight: 700; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: var(--tap); padding: 0 20px; border-radius: 12px; font: 600 16px Inter, sans-serif; text-decoration: none; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-hi); }
.btn-ghost { color: var(--ink); border-color: var(--line); background: rgba(255, 255, 255, 0.03); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.3); }
.btn-telegram { background: var(--tg); color: #fff; }
.btn-telegram:hover { filter: brightness(1.08); }
.tg-icon { width: 20px; height: 20px; flex: none; background: currentColor; -webkit-mask: url("../img/telegram.svg") center / contain no-repeat; mask: url("../img/telegram.svg") center / contain no-repeat; }

/* header + nav */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(7, 11, 29, 0.94); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; gap: 12px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: 0.1em; font-size: 15px; }
.brand small { font-weight: 600; letter-spacing: 0; color: var(--muted); font-size: 13px; border-left: 1px solid var(--line); padding-left: 10px; }
.header-telegram { display: none; margin-left: auto; min-height: 40px; padding: 0 14px; font-size: 14px; }
.nav { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 10px; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { flex: none; display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink-2); text-decoration: none; font-weight: 600; font-size: 14px; }
.nav a:hover, .nav a.on { color: #fff; border-color: rgba(217, 31, 43, 0.7); background: rgba(217, 31, 43, 0.12); }
@media (min-width: 900px) {
  .site-header .wrap.nav { position: absolute; top: 0; left: 50%; transform: translateX(-50%); height: 60px; align-items: center; padding: 0; width: auto; }
  .header-telegram { display: inline-flex; }
}

/* hero */
.hero { padding: 40px 0 28px; background: radial-gradient(700px 360px at 85% -10%, rgba(217, 31, 43, 0.2), transparent 70%); }
.eyebrow { margin: 0; color: var(--red-text); font-weight: 700; font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; }
h1 { font-size: clamp(32px, 8vw, 52px); margin: 12px 0 14px; letter-spacing: -0.025em; line-height: 1.08; }
.lead { margin: 0; color: var(--ink-2); font-size: 18px; max-width: 640px; }
.hero-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 24px; }
@media (min-width: 560px) { .hero-actions { flex-direction: row; } }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 22px 0 0; }
.chips li { border: 1px solid var(--line); background: var(--card); border-radius: 999px; padding: 5px 12px; font-size: 13px; color: var(--ink-2); }

/* cards + sections */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 18px; }
.prep h2 { font-size: 20px; margin-bottom: 12px; }
.checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.checklist li { display: flex; gap: 12px; color: var(--ink-2); }
.checklist li::before { content: ""; flex: none; width: 20px; height: 20px; margin-top: 3px; border: 2px solid var(--red); border-radius: 6px; }
.section { padding: 44px 0 8px; }
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 16px; }
.section-lead { color: var(--muted); margin: 8px 0 18px; }

/* video */
.player { position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden; background: #000; border: 1px solid var(--line); }
.player video, .player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.player-wait { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); z-index: 2; background: rgba(7, 11, 29, 0.88); border: 1px solid var(--line); border-radius: 12px; padding: 10px 16px; font-weight: 600; font-size: 15px; pointer-events: none; }
.player-wait[hidden] { display: none; }
.chapters-title { font-size: 16px; margin: 22px 0 10px; color: var(--ink-2); }
.chapters { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
@media (min-width: 720px) { .chapters { grid-template-columns: 1fr 1fr; } }
.chapters button { width: 100%; min-height: var(--tap); display: flex; align-items: center; gap: 12px; text-align: left; background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line); border-radius: 12px; padding: 8px 14px; color: var(--ink-2); font: 500 15px Inter, sans-serif; cursor: pointer; }
.chapters button:hover { border-color: rgba(255, 255, 255, 0.3); color: #fff; }
.chapters button[aria-current="true"] { border-color: var(--red); background: rgba(217, 31, 43, 0.14); color: #fff; }
.chapters time { flex: none; min-width: 46px; font-variant-numeric: tabular-nums; font-weight: 700; color: var(--red-text); }

/* steps */
.progress { margin: 0; font-weight: 600; color: var(--ink-2); font-size: 15px; }
.progress b { color: var(--ok); }
.steps { display: grid; gap: 10px; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.step[open] { border-color: rgba(255, 255, 255, 0.2); }
.step summary { list-style: none; display: flex; align-items: center; gap: 14px; padding: 14px 16px; min-height: 72px; cursor: pointer; }
.step summary::-webkit-details-marker { display: none; }
.step .num { flex: none; width: 42px; height: 42px; border-radius: 12px; background: var(--red); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 18px; }
.step.done .num { background: #15803d; }
.step .head { flex: 1; min-width: 0; font-size: 17px; }
.step .head .sub { display: block; margin-top: 3px; color: var(--muted); font-size: 14px; font-weight: 400; line-height: 1.4; letter-spacing: 0; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.step .flag { display: table; margin-bottom: 5px; font-size: 11px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--red-text); border: 1px solid rgba(217, 31, 43, 0.5); border-radius: 999px; padding: 1px 8px; }
.chev { flex: none; width: 12px; height: 12px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); margin: -6px 4px 0; transition: transform 0.2s; }
details[open] > summary .chev { transform: rotate(225deg); margin-top: 6px; }
.step-body { padding: 0 16px 18px; border-top: 1px solid var(--line); }
.step-body > :first-child { margin-top: 16px; }
.step-body p { margin: 12px 0; color: var(--ink-2); }
.step-img { display: block; width: 100%; border-radius: 12px; border: 1px solid var(--line); background: #0a0f26; margin: 16px 0 4px; }
.todo-list { margin: 0; }
ol.do { list-style: none; counter-reset: d; margin: 12px 0; padding: 0; display: grid; gap: 10px; }
ol.do > li { counter-increment: d; display: flex; gap: 12px; color: var(--ink); }
ol.do > li::before { content: counter(d); flex: none; width: 26px; height: 26px; margin-top: 1px; border-radius: 50%; border: 1.5px solid rgba(217, 31, 43, 0.85); color: var(--red-text); font-weight: 700; font-size: 13px; display: grid; place-items: center; }
ul.dots { margin: 12px 0; padding-left: 20px; display: grid; gap: 8px; }
.variant { border: 1px solid var(--line); border-radius: 12px; padding: 4px 14px 2px; margin: 12px 0; background: rgba(255, 255, 255, 0.02); }
.variant h4 { font-size: 16px; margin: 12px 0 0; }
.note { border-radius: 12px; padding: 12px 14px; margin: 14px 0; font-size: 15px; color: var(--ink); }
.note .tag { display: block; font-size: 11px; font-weight: 800; letter-spacing: 0.12em; margin-bottom: 4px; }
.note-tip { background: rgba(59, 130, 246, 0.09); border: 1px solid rgba(59, 130, 246, 0.3); }
.note-tip .tag { color: #8fb8ff; }
.note-check { background: rgba(34, 197, 94, 0.08); border: 1px solid rgba(34, 197, 94, 0.3); }
.note-check .tag { color: var(--ok); }
.note-important { background: rgba(217, 31, 43, 0.12); border: 1px solid rgba(217, 31, 43, 0.6); }
.note-important .tag { color: var(--red-text); }
.todo { border: 1.5px dashed var(--todo); color: #fde68a; background: rgba(251, 191, 36, 0.06); border-radius: 10px; padding: 8px 12px; font-size: 14px; margin: 12px 0; }
.step-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.step-actions .btn { flex: 1 1 200px; font-size: 15px; }
.btn-done[aria-pressed="true"] { background: #15803d; border-color: #15803d; color: #fff; }

/* faq */
.faq { display: grid; gap: 8px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; }
.faq summary { list-style: none; display: flex; align-items: center; gap: 12px; min-height: 60px; padding: 12px 16px; cursor: pointer; font-weight: 600; font-size: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .q { flex: 1; }
.faq .answer { padding: 0 16px 14px; color: var(--ink-2); }
.faq .answer p { margin: 8px 0; }

/* updates */
.updates { display: grid; gap: 12px; }
.update { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.update-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.update-meta .ver { background: var(--red); color: #fff; font-weight: 700; border-radius: 999px; padding: 2px 10px; }
.update-meta .latest { color: var(--ok); border: 1px solid rgba(74, 222, 128, 0.5); border-radius: 999px; padding: 1px 8px; font-weight: 700; }
.update h3 { font-size: 18px; margin: 10px 0 4px; }
.update ul { margin: 8px 0 0; padding-left: 20px; color: var(--ink-2); }

/* support + footer */
.support { margin-top: 44px; display: flex; flex-direction: column; gap: 14px; background: linear-gradient(135deg, var(--card), var(--card-2)); }
.support h2 { font-size: 22px; }
.support p { margin: 6px 0 0; color: var(--ink-2); }
@media (min-width: 720px) { .support { flex-direction: row; align-items: center; justify-content: space-between; } }
.site-footer { color: var(--muted); font-size: 13px; padding: 28px 0 100px; text-align: center; }
.site-footer p { margin: 4px 0; }
.fab-telegram { position: fixed; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom)); z-index: 60; width: 58px; height: 58px; border-radius: 50%; background: var(--tg); color: #fff; display: grid; place-items: center; box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45); }
.fab-telegram .tg-icon { width: 28px; height: 28px; }
@media (min-width: 900px) { .fab-telegram { display: none; } .site-footer { padding-bottom: 40px; } }
.load-error { margin: 16px 0; padding: 14px 16px; border: 1px solid rgba(217, 31, 43, 0.6); border-radius: 12px; background: rgba(217, 31, 43, 0.1); }
.noscript { text-align: center; padding: 20px; }

@media (min-width: 720px) {
  h2 { font-size: 30px; }
  .card { padding: 26px 28px; }
  .step summary { padding: 16px 20px; }
  .step-body { padding: 0 20px 20px; }
  .step .head { font-size: 18px; }
}