/* ==========================================================================
   X Universe Launcher · 官网共享样式
   所有页面共用。主题通过 <html data-theme="dark|light"> 切换，
   默认跟随系统（见 style.css 末尾的 @media prefers-color-scheme）。
   ========================================================================== */

:root {
  --max: 1120px;
  --r: 14px;
  --r-sm: 10px;
  --ease: cubic-bezier(.4, 0, .2, 1);
  --t: .2s var(--ease);
}

/* ---------- 暗色（默认） ---------- */
html[data-theme="dark"] {
  --bg: #0b0d12;
  --bg2: #11141c;
  --card: #161a24;
  --card-h: #1b2130;
  --line: #242a38;
  --line-h: #39425a;
  --fg: #e8ecf4;
  --dim: #9aa4b8;
  --brand: #4a6cf7;
  --brand2: #8b5cf6;
  --brand-soft: rgba(74, 108, 247, .16);
  --brand-line: rgba(122, 162, 255, .28);
  --ok: #2ebd6b;
  --warn: #e6a23c;
  --err: #ff6b6b;
  --shadow: 0 30px 70px -30px rgba(0, 0, 0, .9);
  --glass: rgba(11, 13, 18, .82);
  --icon-bg: linear-gradient(135deg, rgba(74, 108, 247, .22), rgba(139, 92, 246, .22));
}

/* ---------- 亮色 ---------- */
html[data-theme="light"] {
  --bg: #f6f7fb;
  --bg2: #ffffff;
  --card: #ffffff;
  --card-h: #f2f5fc;
  --line: #e2e6f0;
  --line-h: #c3cbdd;
  --fg: #1b2130;
  --dim: #5d677d;
  --brand: #3b5bdb;
  --brand2: #7048c8;
  --brand-soft: rgba(59, 91, 219, .1);
  --brand-line: rgba(59, 91, 219, .24);
  --ok: #17915a;
  --warn: #b4761b;
  --err: #d64545;
  --shadow: 0 24px 60px -30px rgba(23, 32, 56, .35);
  --glass: rgba(246, 247, 251, .85);
  --icon-bg: linear-gradient(135deg, rgba(59, 91, 219, .12), rgba(112, 72, 200, .12));
}

/* 未指定 data-theme 时跟随系统 */
@media (prefers-color-scheme: light) {
  html:not([data-theme]) {
    --bg: #f6f7fb;
    --bg2: #ffffff;
    --card: #ffffff;
    --card-h: #f2f5fc;
    --line: #e2e6f0;
    --line-h: #c3cbdd;
    --fg: #1b2130;
    --dim: #5d677d;
    --brand: #3b5bdb;
    --brand2: #7048c8;
    --brand-soft: rgba(59, 91, 219, .1);
    --brand-line: rgba(59, 91, 219, .24);
    --ok: #17915a;
    --warn: #b4761b;
    --err: #d64545;
    --shadow: 0 24px 60px -30px rgba(23, 32, 56, .35);
    --glass: rgba(246, 247, 251, .85);
    --icon-bg: linear-gradient(135deg, rgba(59, 91, 219, .12), rgba(112, 72, 200, .12));
  }
}

/* ========================================================================== */

* { box-sizing: border-box; margin: 0; padding: 0 }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: "Segoe UI", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI Emoji", system-ui, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background var(--t), color var(--t);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none }
img { max-width: 100%; display: block }

::selection { background: var(--brand); color: #fff }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; width: 100% }

/* ---------- 顶栏 ---------- */

header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav { display: flex; align-items: center; height: 62px; gap: 28px }

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: .3px; white-space: nowrap }

.logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  display: grid; place-items: center;
  font-size: 15px; font-weight: 800; color: #fff;
  box-shadow: 0 4px 14px -4px var(--brand);
}

.nav-links { margin-left: auto; display: flex; gap: 6px; font-size: 14px; color: var(--dim) }
.nav-links a { padding: 7px 12px; border-radius: 8px; transition: var(--t) }
.nav-links a:hover { color: var(--fg); background: var(--card) }
.nav-links a.active { color: var(--fg); background: var(--brand-soft); font-weight: 600 }

.nav-actions { display: flex; align-items: center; gap: 10px }

.icon-btn {
  width: 36px; height: 36px; border-radius: 9px;
  border: 1px solid var(--line); background: transparent; color: var(--dim);
  display: grid; place-items: center; font-size: 15px; cursor: pointer;
  transition: var(--t);
}
.icon-btn:hover { color: var(--fg); border-color: var(--line-h); background: var(--card) }

.menu-btn { display: none }

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 18px; border-radius: 9px;
  font-size: 14px; font-weight: 600; font-family: inherit;
  background: linear-gradient(135deg, var(--brand), var(--brand2)); color: #fff;
  border: 1px solid transparent; transition: var(--t); cursor: pointer;
  white-space: nowrap;
}
.btn:hover { filter: brightness(1.12); transform: translateY(-1px); box-shadow: 0 10px 24px -12px var(--brand) }
.btn:active { transform: translateY(0) }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; filter: none; box-shadow: none }

.btn.ghost { background: transparent; border-color: var(--line); color: var(--fg) }
.btn.ghost:hover { background: var(--card); border-color: var(--line-h); box-shadow: none }
.btn.sm { padding: 6px 13px; font-size: 13px }
.btn.lg { padding: 12px 26px; font-size: 15px }
.btn.block { width: 100% }

/* ---------- 通用区块 ---------- */

section { padding: 74px 0 }
section.tight { padding: 52px 0 }

.eyebrow {
  font-size: 12.5px; font-weight: 700; letter-spacing: 1.6px;
  text-transform: uppercase; color: var(--brand); margin-bottom: 12px;
}

h1 { font-size: clamp(32px, 5.2vw, 52px); line-height: 1.18; font-weight: 800; letter-spacing: -.8px; margin-bottom: 18px }
h2 { font-size: clamp(25px, 3.4vw, 34px); font-weight: 800; letter-spacing: -.5px; margin-bottom: 14px }
h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px }

.grad {
  background: linear-gradient(100deg, #7aa2ff, #c4a3ff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.lead { color: var(--dim); font-size: 16px; max-width: 640px; margin-bottom: 40px }
.muted { color: var(--dim) }
.mono { font-family: Consolas, "Cascadia Mono", ui-monospace, monospace }

/* ---------- 页内 hero（内页顶部） ---------- */

.page-hero { padding: 62px 0 44px; position: relative; overflow: hidden }
.page-hero::before {
  content: ""; position: absolute; width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 108, 247, .16), transparent 68%);
  top: -230px; right: -80px; pointer-events: none;
}
.page-hero p { color: var(--dim); font-size: 16.5px; max-width: 660px }

.crumb { font-size: 13px; color: var(--dim); margin-bottom: 16px }
.crumb a:hover { color: var(--fg) }
.crumb span { margin: 0 8px; opacity: .5 }

/* ---------- 卡片网格 ---------- */

.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(262px, 1fr)) }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)) }

.card {
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 24px; background: var(--bg2); transition: var(--t);
}
.card:hover { transform: translateY(-3px); border-color: var(--line-h); background: var(--card) }
.card p { font-size: 14px; color: var(--dim) }
.card h3 + p { margin-top: 0 }
.card .ficon {
  width: 40px; height: 40px; border-radius: 11px; margin-bottom: 15px;
  display: grid; place-items: center; font-size: 19px;
  background: var(--icon-bg); border: 1px solid var(--brand-line);
}
.card ul { margin: 10px 0 0; padding-left: 18px; color: var(--dim); font-size: 14px }
.card ul li { margin-bottom: 6px }

/* ---------- 统计条 ---------- */

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 18px }
.stat { border: 1px solid var(--line); border-radius: var(--r); background: var(--bg2); padding: 22px 20px; text-align: center }
.stat b { display: block; font-size: 30px; font-weight: 800; letter-spacing: -1px; line-height: 1.2 }
.stat span { font-size: 13px; color: var(--dim) }

/* ---------- 列表条目 ---------- */

.rows { display: flex; flex-direction: column; gap: 10px }
.row {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px; border: 1px solid var(--line);
  border-radius: var(--r-sm); background: var(--bg2);
  transition: var(--t); cursor: pointer;
}
.row:hover { border-color: var(--brand); transform: translateX(3px); background: var(--card) }
.row .ri { width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center; background: var(--brand-soft); font-size: 16px; flex-shrink: 0 }
.row b { display: block; font-size: 14.5px; font-weight: 600 }
.row span { font-size: 12.5px; color: var(--dim) }
.row .tag { margin-left: auto; font-size: 12px; color: var(--dim); white-space: nowrap }

/* ---------- 表格 ---------- */

.table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--bg2) }
.table th, .table td { padding: 13px 16px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--line) }
.table th { font-size: 12.5px; font-weight: 700; color: var(--dim); text-transform: uppercase; letter-spacing: .6px; background: var(--card-h) }
.table tr:last-child td { border-bottom: none }
.table td .hash { font-family: Consolas, ui-monospace, monospace; font-size: 12px; color: var(--dim); word-break: break-all }

/* ---------- FAQ 手风琴 ---------- */

.faq { max-width: 780px }
.faq details {
  border: 1px solid var(--line); border-radius: 11px;
  background: var(--bg2); margin-bottom: 11px; overflow: hidden;
  transition: var(--t);
}
.faq details[open] { border-color: var(--line-h); background: var(--card) }
.faq summary {
  padding: 15px 18px; cursor: pointer; font-weight: 600; font-size: 15px;
  list-style: none; display: flex; align-items: center; gap: 12px;
}
.faq summary::-webkit-details-marker { display: none }
.faq summary::after { content: "+"; margin-left: auto; color: var(--dim); font-size: 19px; line-height: 1 }
.faq details[open] summary::after { content: "−" }
.faq details p { padding: 0 18px 17px; color: var(--dim); font-size: 14px }

/* ---------- 大厅：房间卡片 ---------- */

.room-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)) }
.room {
  display: flex; gap: 13px; align-items: center;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: var(--bg2); padding: 14px 16px; transition: var(--t);
}
.room:hover { border-color: var(--brand); background: var(--card) }
.room .avatar { width: 42px; height: 42px; border-radius: 9px; flex-shrink: 0; background: linear-gradient(135deg, var(--brand), var(--brand2)) }
.room b { display: block; font-size: 14.5px; font-weight: 600 }
.room span { font-size: 12.5px; color: var(--dim) }
.room .badge { margin-left: auto; font-size: 11.5px; padding: 3px 9px; border-radius: 999px; background: var(--brand-soft); color: var(--brand); white-space: nowrap }
.room .badge.on { background: rgba(46, 189, 107, .14); color: var(--ok) }

.status-line { display: flex; align-items: center; gap: 9px; font-size: 13.5px; color: var(--dim); margin-bottom: 18px }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--dim); flex-shrink: 0 }
.dot.ok { background: var(--ok); box-shadow: 0 0 0 4px rgba(46, 189, 107, .16) }
.dot.err { background: var(--err); box-shadow: 0 0 0 4px rgba(255, 107, 107, .16) }
.dot.wait { background: var(--warn); animation: pulse 1.4s infinite }

@keyframes pulse { 0%, 100% { opacity: 1 } 50% { opacity: .35 } }

/* ---------- 表单 ---------- */

.field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px }
.field label { font-size: 13px; font-weight: 600; color: var(--dim) }
.input {
  width: 100%; padding: 11px 14px; font-size: 14px; font-family: inherit;
  color: var(--fg); background: var(--bg2);
  border: 1px solid var(--line); border-radius: var(--r-sm);
  transition: var(--t); outline: none;
}
.input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft) }
.input::placeholder { color: var(--dim); opacity: .7 }

/* ---------- 提示条 ---------- */

.note {
  border: 1px solid var(--brand-line); background: var(--brand-soft);
  border-radius: var(--r-sm); padding: 14px 18px;
  font-size: 13.5px; color: var(--fg); margin-bottom: 20px;
}
.note code { font-family: Consolas, ui-monospace, monospace; font-size: 12.5px; background: rgba(0, 0, 0, .22); padding: 1px 6px; border-radius: 4px }

#toast {
  position: fixed; left: 50%; bottom: 32px; transform: translate(-50%, 24px);
  background: var(--card); color: var(--fg);
  border: 1px solid var(--line-h); border-radius: 11px;
  padding: 11px 20px; font-size: 13.5px;
  box-shadow: var(--shadow);
  opacity: 0; pointer-events: none; transition: .28s var(--ease); z-index: 90;
}
#toast.show { opacity: 1; transform: translate(-50%, 0) }

/* ---------- 界面预览 mock ---------- */

.mock {
  margin-top: 56px; border-radius: var(--r); overflow: hidden;
  border: 1px solid var(--line); background: var(--bg2); box-shadow: var(--shadow);
}
.mock-bar {
  height: 44px; display: flex; align-items: center; gap: 8px; padding: 0 16px;
  background: linear-gradient(90deg, var(--brand), var(--brand2));
  font-size: 13.5px; font-weight: 700; color: #fff;
}
.tl { width: 11px; height: 11px; border-radius: 50%; background: rgba(255, 255, 255, .32) }
.mock-body { display: grid; grid-template-columns: 200px 1fr; min-height: 300px }
.mock-side { border-right: 1px solid var(--line); padding: 16px 12px; display: flex; flex-direction: column; gap: 4px }
.navitem { padding: 8px 12px; border-radius: 8px; font-size: 13px; color: var(--dim); display: flex; align-items: center; gap: 9px }
.navitem.on { background: var(--brand-soft); color: var(--brand); font-weight: 600 }
.navitem .sq { width: 13px; height: 13px; border-radius: 4px; background: currentColor; opacity: .5 }
.mock-main { padding: 20px 22px }
.mini { border: 1px solid var(--line); border-radius: 10px; padding: 14px; background: var(--card) }
.mini h4 { font-size: 12px; color: var(--dim); font-weight: 600; margin-bottom: 9px }
.bar { height: 7px; border-radius: 99px; background: var(--line); overflow: hidden; margin-bottom: 7px }
.bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), var(--brand2)); border-radius: 99px }
.log { font-family: Consolas, ui-monospace, monospace; font-size: 11px; color: var(--dim); line-height: 1.85 }
.log b { color: #7ee2a8; font-weight: 600 }
.log i { color: #ffb86b; font-style: normal }

/* ---------- 页脚 ---------- */

footer { border-top: 1px solid var(--line); padding: 34px 0; color: var(--dim); font-size: 13.5px; margin-top: 40px }
.fgrid { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap }
.fgrid nav { display: flex; gap: 20px; flex-wrap: wrap }
.fgrid a:hover { color: var(--fg) }

/* ---------- 滚动进入动画 ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease) }
.reveal.in { opacity: 1; transform: none }

/* ---------- 响应式 ---------- */

@media (max-width: 820px) {
  .nav-links {
    position: fixed; inset: 62px 0 auto; flex-direction: column; gap: 2px;
    background: var(--bg2); border-bottom: 1px solid var(--line);
    padding: 12px 18px 18px; margin-left: 0;
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: var(--t);
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto }
  .nav-links a { padding: 10px 12px }
  .menu-btn { display: grid }
  .nav-links + .nav-actions { margin-left: auto }
  .mock-body { grid-template-columns: 1fr }
  .mock-side { display: none }
}

@media (max-width: 680px) {
  section { padding: 54px 0 }
  .wrap { padding: 0 18px }
  .card { padding: 20px }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important }
  .reveal { opacity: 1; transform: none }
}