/* SPDX-License-Identifier: GPL-3.0-or-later */
:root {
  --bg: #0f1216; --panel: #161a20; --panel-alt: #1b2027; --raised: #232932; --border: #272e38;
  --text: #e8ecf1; --muted: #a5afbc; --faint: #8691a0;
  --accent: #3ccfb7; --accent-strong: #5fe3cc; --accent-text: #06231e;
  --amber: #f3b443; --iris: #8592fb; --danger: #ff7a7a;
  --radius: 10px; --max: 1120px;
  --font: Inter, "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, Menlo, monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f4f6f8; --panel: #ffffff; --panel-alt: #f6f8fa; --raised: #e8ecf0; --border: #d5dbe2;
    --text: #141a21; --muted: #4d5867; --faint: #5f6b7a;
    --accent: #0f8f7c; --accent-strong: #0b7464; --accent-text: #ffffff;
    --amber: #9a6700; --iris: #4c5bd4; --danger: #c53030;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #f4f6f8; --panel: #ffffff; --panel-alt: #f6f8fa; --raised: #e8ecf0; --border: #d5dbe2;
  --text: #141a21; --muted: #4d5867; --faint: #5f6b7a;
  --accent: #0f8f7c; --accent-strong: #0b7464; --accent-text: #ffffff;
  --amber: #9a6700; --iris: #4c5bd4; --danger: #c53030;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-text); padding: 8px 12px; border-radius: 6px; z-index: 10; }
.skip:focus { left: 16px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.site-header .wrap { display: flex; align-items: center; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { width: 30px; height: 30px; }
.brand span b { color: var(--accent); font-weight: 700; }
.nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 6px; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--panel-alt); }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 8px; font-weight: 600; text-decoration: none; border: 1px solid var(--border); background: var(--raised); color: var(--text); }
.btn:hover { background: var(--panel-alt); color: var(--text); }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: transparent; }
.btn.primary:hover { background: var(--accent-strong); color: var(--accent-text); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* Hero */
.hero { padding: 64px 0 32px; text-align: center; }
.hero h1 { font-size: clamp(32px, 6vw, 56px); line-height: 1.1; margin: 16px 0; letter-spacing: -0.02em; }
.hero h1 span { color: var(--accent); }
.hero p.lead { font-size: clamp(17px, 2.4vw, 20px); color: var(--muted); max-width: 720px; margin: 0 auto 24px; }
.hero .btn-row { justify-content: center; }
.status-pill { display: inline-block; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); font-size: 14px; background: var(--panel); }
.status-pill b { color: var(--amber); font-weight: 600; }
.shot { margin: 40px auto 0; border-radius: 12px; border: 1px solid var(--border); box-shadow: 0 30px 80px rgba(0,0,0,0.45); overflow: hidden; max-width: 1080px; }
.caption { color: var(--faint); font-size: 14px; text-align: center; margin-top: 10px; }

/* Sections */
section { padding: 56px 0; }
section h2 { font-size: clamp(24px, 4vw, 34px); margin: 0 0 8px; letter-spacing: -0.01em; }
section .sub { color: var(--muted); margin: 0 0 28px; max-width: 760px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.card h3 { margin: 8px 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .tag { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.tag.done { color: var(--accent); } .tag.beta { color: var(--amber); } .tag.planned { color: var(--faint); }
.steps { counter-reset: step; }
.steps .card h3::before { counter-increment: step; content: counter(step) ". "; color: var(--accent); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); }
.split { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); align-items: start; }
code, pre { font-family: var(--mono); font-size: 14px; }
pre { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 14px; overflow-x: auto; }
:not(pre) > code { background: var(--panel-alt); padding: 1px 5px; border-radius: 4px; }

/* Docs */
.doc { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 32px; padding: 32px 0 64px; }
.doc nav { position: sticky; top: 76px; align-self: start; font-size: 15px; }
.doc nav ul { list-style: none; padding: 0; margin: 0; }
.doc nav li a { display: block; padding: 5px 10px; border-radius: 6px; color: var(--muted); text-decoration: none; }
.doc nav li a[aria-current="page"], .doc nav li a:hover { background: var(--panel-alt); color: var(--text); }
.doc nav h2 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); margin: 16px 10px 6px; }
.prose { min-width: 0; }
.prose h1 { font-size: 34px; line-height: 1.2; margin-top: 0; }
.prose h2 { margin-top: 2em; padding-top: 0.5em; border-top: 1px solid var(--border); }
.prose td { overflow-wrap: anywhere; }
.prose img { border-radius: 8px; border: 1px solid var(--border); }
.prose blockquote { margin: 1em 0; padding: 8px 16px; border-left: 4px solid var(--amber); background: var(--panel); border-radius: 0 8px 8px 0; color: var(--muted); }
.edit-link { margin-top: 48px; font-size: 14px; color: var(--faint); }
@media (max-width: 820px) {
  .doc { grid-template-columns: 1fr; }
  .doc nav { position: static; }
}

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 32px 0 48px; color: var(--muted); font-size: 15px; }
.site-footer .cols { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.site-footer h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); margin: 0 0 10px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 4px 0; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--text); text-decoration: underline; }
.site-footer .fine { margin-top: 28px; font-size: 13px; color: var(--faint); }

/* Theme toggle */
.theme-toggle { margin-left: 4px; width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel); color: var(--muted); font-size: 17px; line-height: 1; cursor: pointer; }
.theme-toggle:hover { color: var(--text); background: var(--panel-alt); }

/* Page headings and link cards */
.page-head { padding: 48px 16px 8px; }
.page-head h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.15; margin: 0 0 12px; letter-spacing: -0.02em; }
.page-head .sub { color: var(--muted); max-width: 760px; margin: 0; }
.doc-group { padding: 28px 0; }
.doc-group h2 { font-size: 20px; margin: 0 0 14px; }
.link-card { display: block; text-decoration: none; color: var(--text); transition: border-color 0.15s, transform 0.15s; }
.link-card:hover { border-color: var(--accent); color: var(--text); transform: translateY(-1px); }
.link-card h3 { margin-top: 0; }
.notice { background: var(--panel); border: 1px solid var(--border); border-left: 4px solid var(--amber); border-radius: 0 var(--radius) var(--radius) 0; padding: 14px 18px; color: var(--muted); }
.notice strong { color: var(--text); }
.gallery { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.gallery figure { margin: 0; }
.gallery img { border-radius: 10px; border: 1px solid var(--border); }
.gallery figcaption { color: var(--faint); font-size: 14px; margin-top: 8px; }
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.checklist li { padding-left: 28px; position: relative; color: var(--muted); }
.checklist li::before { content: "\2713"; position: absolute; left: 4px; color: var(--accent); font-weight: 700; }
.muted { color: var(--muted); }

/* Docs extras */
.doc-nav .doc-home { display: inline-block; margin: 0 10px 4px; font-size: 14px; }
.table-scroll { overflow-x: auto; margin: 1em 0; }
.table-scroll table { margin: 0; }
.prose ul.tasks { list-style: none; padding-left: 4px; }
.prose li.task { position: relative; padding-left: 28px; }
.prose li.task .check { position: absolute; left: 0; top: 4px; width: 18px; height: 18px; border-radius: 4px; border: 1px solid var(--border); font-size: 13px; line-height: 16px; text-align: center; color: var(--accent-text); }
.prose li.task.done .check { background: var(--accent); border-color: var(--accent); }
.site-footer .inline-list { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.site-footer .inline-list li { margin: 0; }
@media (max-width: 640px) {
  .site-header .wrap { padding-top: 8px; padding-bottom: 8px; }
  .nav { margin-left: 0; width: 100%; order: 3; }
  .theme-toggle { margin-left: auto; }
}
.grid.features { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid.steps { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
@media (max-width: 820px) {
  .doc .doc-nav { order: 2; border-top: 1px solid var(--border); padding-top: 16px; }
}
.card.download { display: flex; flex-direction: column; gap: 10px; }
.card.download .btn { align-self: flex-start; }
.card.download .hash { font-size: 12px; color: var(--faint); overflow-wrap: anywhere; margin: 0; }
.card.download .hash code { font-size: 12px; background: none; padding: 0; }