/* ============================================================
   Linkell 灵壳 · 设计系统 v2「墨与灵光」
   深墨底 / 暖纸白 / 灵光青，宋体标题 × 等宽细节
   零外部依赖，所有页面共用
   ============================================================ */

:root {
  /* 墨 —— 背景层级 */
  --ink-0: #0a0b0e;
  --ink-1: #0f1116;
  --ink-2: #14171f;
  --ink-3: #1b1f2a;

  /* 纸 —— 文字层级 */
  --paper: #ece9e1;
  --paper-soft: #c7c4bb;
  --muted: #8b8e96;
  --faint: #5d616b;

  /* 灵光青 —— 唯一主强调色 */
  --accent: #6fe3c4;
  --accent-deep: #2fb89e;
  --accent-dim: rgba(111, 227, 196, 0.10);
  --accent-line: rgba(111, 227, 196, 0.35);

  /* 产品辅色：Codex = 灵光青，ClaudeCode = 陶土橙 */
  --coral: #e08d6d;
  --coral-dim: rgba(224, 141, 109, 0.10);
  --coral-line: rgba(224, 141, 109, 0.38);

  /* 语义色 */
  --ok: #58c08a;
  --warn: #e0a83e;
  --bad: #e06c5b;

  /* 线与面 */
  --hairline: rgba(236, 233, 225, 0.08);
  --hairline-strong: rgba(236, 233, 225, 0.16);

  /* 字体 */
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", "SF Mono", Consolas, "Courier New", monospace;

  --radius: 10px;
  --radius-lg: 16px;
  --max: 1120px;

  /* 网格底纹与 logo（随主题切换） */
  --grid-line: rgba(236, 233, 225, 0.018);
  --logo-fill: #14171f;
  --logo-stroke: #ece9e1;
  /* F 实心徽章 logo：深色主题 */
  --logo-tile: #6fe3c4;
  --logo-glyph: #0a0b0e;
}

/* ------------------------------------------------------------
   浅色主题「纸与代码青」——默认主题
   主色是 CLI 窗口里的赛博代码青（cyan），不是绿色
   ------------------------------------------------------------ */
[data-theme="light"] {
  --ink-0: #f5f6f8;
  --ink-1: #ffffff;
  --ink-2: #edf0f3;
  --ink-3: #e1e5ea;

  --paper: #171a20;
  --paper-soft: #363b45;
  --muted: #676d79;
  --faint: #99a0ab;

  --accent: #0797b4;
  --accent-deep: #056a80;
  --accent-dim: rgba(7, 151, 180, 0.09);
  --accent-line: rgba(7, 151, 180, 0.42);

  --coral: #c96442;
  --coral-dim: rgba(201, 100, 66, 0.10);
  --coral-line: rgba(201, 100, 66, 0.42);

  --ok: #14876b;
  --warn: #b07d16;
  --bad: #c44b38;

  --hairline: rgba(23, 26, 32, 0.10);
  --hairline-strong: rgba(23, 26, 32, 0.22);

  --grid-line: rgba(23, 26, 32, 0.035);
  --logo-fill: #14171f;
  --logo-stroke: #14171f;
  /* F 实心徽章 logo：浅色主题（深青底 + 白字，浅底上更沉稳） */
  --logo-tile: #0797b4;
  --logo-glyph: #ffffff;
}
[data-theme="light"] ::selection { background: #0797b4; color: #fff; }
[data-theme="light"] .nav .primary { color: #fff; }
[data-theme="light"] .btn-primary { color: #fff; }
[data-theme="light"] .btn-primary:hover { background: var(--accent-deep); }
[data-theme="light"] .mode-tab.active { color: #fff; }
[data-theme="light"] .btn-coral { color: #fff; }
[data-theme="light"] .btn-coral:hover { background: #b45536; }

* { box-sizing: border-box; }
[hidden] { display: none !important; }
.is-hidden { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--paper);
  background: var(--ink-0);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* 底纹：极淡的方格坐标纸，营造工程图纸感 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 46%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 46%);
}

body > * { position: relative; z-index: 1; }

::selection { background: var(--accent); color: var(--ink-0); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.shell { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; }

/* ------------------------------------------------------------
   顶栏
   ------------------------------------------------------------ */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 22px 0 18px;
  border-bottom: 1px solid var(--hairline);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 38px; height: auto; flex: 0 0 auto; }

/* F 实心徽章 logo（image2 原图矢量描摹）：青壳 + 镂空 >_ + 底部蟹眼蟹脚 */
.lgf-solid { fill: var(--logo-tile); }

/* 主题切换按钮 */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; min-height: 38px; padding: 0; border-radius: var(--radius);
  border: 1px solid var(--hairline-strong); background: transparent;
  color: var(--paper-soft); font-size: 16px; cursor: pointer;
  transition: border-color .16s ease, color .16s ease;
}
.theme-toggle:hover { border-color: var(--accent-line); color: var(--accent); }
.brand-copy { line-height: 1.2; }
.brand-copy strong {
  display: block; font-family: var(--font-display); font-size: 20px; font-weight: 700;
  letter-spacing: 2px; color: var(--paper);
}
.brand-copy span {
  display: block; margin-top: 2px; font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 4px; color: var(--muted); text-transform: uppercase;
}
.brand-copy em { font-style: normal; color: var(--accent); }

.nav { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; align-items: center; }
.nav a, .nav button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 38px; padding: 0 16px; border-radius: var(--radius);
  border: 1px solid transparent; background: transparent;
  color: var(--paper-soft); font: inherit; font-size: 14px; cursor: pointer;
  text-decoration: none; transition: color .16s ease, border-color .16s ease, background .16s ease;
}
.nav a:hover, .nav button:hover { color: var(--paper); text-decoration: none; background: var(--ink-2); }
.nav .primary {
  color: var(--ink-0); background: var(--accent); font-weight: 700;
}
.nav .primary:hover { background: #8fecd3; color: var(--ink-0); }
.nav .session-pill {
  display: inline-flex; align-items: center; gap: 8px; min-height: 38px; padding: 0 14px;
  border: 1px solid var(--accent-line); border-radius: var(--radius);
  color: var(--accent); font-family: var(--font-mono); font-size: 13px;
}
.nav .session-pill::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

/* ------------------------------------------------------------
   文字风格
   ------------------------------------------------------------ */
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 3px;
  color: var(--accent); text-transform: uppercase;
}
.kicker::before { content: ""; width: 28px; height: 1px; background: var(--accent-line); }

h1, .h1 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(38px, 6vw, 64px); line-height: 1.18; letter-spacing: 1px;
  margin: 0; color: var(--paper);
}
h2, .h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(24px, 3.4vw, 34px); line-height: 1.3; letter-spacing: 1px;
  margin: 0; color: var(--paper);
}
h3, .h3 { font-size: 17px; font-weight: 700; margin: 0; color: var(--paper); }

.lead { color: var(--paper-soft); font-size: clamp(15px, 1.8vw, 17px); line-height: 1.9; }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }
.coral { color: var(--coral); }

.section { padding: 72px 0 0; }
.section-head { max-width: 620px; }
.section-head p { margin: 14px 0 0; color: var(--muted); }
.section-head.center { margin: 0 auto; text-align: center; }
.section-head.center .kicker { justify-content: center; }
.section-head.center .kicker::before { display: none; }

/* ------------------------------------------------------------
   按钮
   ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 26px; border-radius: var(--radius);
  border: 1px solid transparent; font: inherit; font-size: 15px; font-weight: 700;
  cursor: pointer; text-decoration: none;
  transition: background .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

.btn-primary { color: var(--ink-0); background: var(--accent); }
.btn-primary:hover { background: #8fecd3; }
.btn-ghost { color: var(--paper); background: transparent; border-color: var(--hairline-strong); }
.btn-ghost:hover { border-color: var(--accent-line); color: var(--accent); }
.btn-coral { color: #1c0f08; background: var(--coral); }
.btn-coral:hover { background: #eba284; }
.btn-block { width: 100%; }

/* ------------------------------------------------------------
   卡片 / 面板
   ------------------------------------------------------------ */
.panel {
  border: 1px solid var(--hairline); border-radius: var(--radius-lg);
  background: var(--ink-1); padding: 26px;
}
.panel-title {
  display: flex; align-items: baseline; gap: 12px; margin: 0 0 18px;
  font-family: var(--font-display); font-size: 20px; font-weight: 700; letter-spacing: 1px;
}
.panel-title .idx { font-family: var(--font-mono); font-size: 12px; color: var(--faint); letter-spacing: 2px; }
.panel-note { margin: -8px 0 18px; color: var(--muted); font-size: 13.5px; line-height: 1.8; }

.card-hover { transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.card-hover:hover { border-color: var(--hairline-strong); background: var(--ink-2); transform: translateY(-3px); }

/* ------------------------------------------------------------
   终端窗口（纯 CSS 组件）
   ------------------------------------------------------------ */
.term {
  border: 1px solid var(--hairline-strong); border-radius: var(--radius-lg);
  background: rgba(10, 11, 14, 0.92); overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0,0,0,.4);
}
.term-bar {
  display: flex; align-items: center; gap: 8px; padding: 12px 16px;
  border-bottom: 1px solid var(--hairline); background: var(--ink-2);
}
.term-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--ink-3); }
.term-bar i:nth-child(1) { background: #4a4f5a; }
.term-bar .term-title {
  margin-left: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--muted);
  letter-spacing: 1px;
}
.term-body {
  padding: 20px 22px 24px; font-family: var(--font-mono); font-size: 13.5px; line-height: 2.05;
  color: var(--paper-soft); overflow-x: auto; white-space: pre; text-align: left;
}
.term-body .p { color: var(--accent); }        /* prompt */
.term-body .c { color: var(--faint); }         /* comment */
.term-body .o { color: var(--paper-soft); }    /* output */
.term-body .hl { color: var(--paper); }
.term-body .co { color: var(--coral); }
.cursor {
  display: inline-block; width: 8px; height: 16px; margin-left: 2px;
  background: var(--accent); vertical-align: -3px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ------------------------------------------------------------
   表单
   ------------------------------------------------------------ */
.field { display: grid; gap: 8px; }
.field > span {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 2px; color: var(--muted);
}
.field input {
  width: 100%; min-height: 48px; padding: 0 14px;
  border: 1px solid var(--hairline-strong); border-radius: var(--radius);
  background: var(--ink-0); color: var(--paper); font: inherit; font-size: 14px;
  transition: border-color .16s ease, box-shadow .16s ease;
}
.field input::placeholder { color: var(--faint); }
.field input:focus { outline: 0; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }

.code-row { display: grid; grid-template-columns: 1fr 132px; gap: 10px; align-items: end; }

.secondary-btn {
  min-height: 48px; padding: 0 12px; border: 1px solid var(--accent-line); border-radius: var(--radius);
  color: var(--accent); background: var(--accent-dim); font: inherit; font-size: 13px; font-weight: 700;
  cursor: pointer; transition: background .16s ease;
}
.secondary-btn:hover { background: rgba(111, 227, 196, 0.18); }
.secondary-btn:disabled { opacity: .5; cursor: not-allowed; }

.mode-tabs {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px;
  border: 1px solid var(--hairline); border-radius: var(--radius); background: var(--ink-0);
}
.mode-tab {
  min-height: 40px; border: 0; border-radius: 7px; background: transparent;
  color: var(--muted); font: inherit; font-size: 13.5px; font-weight: 700; cursor: pointer;
  transition: background .16s ease, color .16s ease;
}
.mode-tab.active { color: var(--ink-0); background: var(--accent); }

.message {
  min-height: 22px; margin-top: 12px; color: var(--accent);
  font-family: var(--font-mono); font-size: 13px; line-height: 1.7; overflow-wrap: anywhere;
}
.message a { font-weight: 700; }

/* ------------------------------------------------------------
   表格
   ------------------------------------------------------------ */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { padding: 12px 10px; border-bottom: 1px solid var(--hairline); text-align: left; vertical-align: top; }
th { font-family: var(--font-mono); font-size: 11px; letter-spacing: 2px; color: var(--faint); font-weight: 400; text-transform: uppercase; }
td { color: var(--paper-soft); overflow-wrap: anywhere; }
tbody tr:hover { background: rgba(236, 233, 225, 0.025); }

.empty {
  padding: 22px; border: 1px dashed var(--hairline-strong); border-radius: var(--radius);
  color: var(--faint); font-family: var(--font-mono); font-size: 13px; text-align: center;
}

/* 状态色 */
.status { font-weight: 700; }
.confirmed, .active, .online { color: var(--ok); }
.pending_manual_confirm, .pending_stripe_checkout, .pending_stripe_alipay { color: var(--warn); }
.stripe_amount_mismatch, .stripe_missing_user, .rejected, .disabled { color: var(--bad); }

/* ------------------------------------------------------------
   弹层（悬浮登录/注册卡）
   ------------------------------------------------------------ */
.modal {
  position: fixed; inset: 0; z-index: 40; display: grid; place-items: center; padding: 20px;
  background: rgba(6, 7, 9, 0.72); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.auth-card {
  width: min(440px, 100%); max-height: calc(100vh - 40px); overflow: auto;
  border: 1px solid var(--hairline-strong); border-radius: var(--radius-lg);
  background: var(--ink-1); padding: 30px 28px 26px;
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.6);
}
.auth-head { display: flex; justify-content: flex-end; }
.icon-btn {
  width: 34px; height: 34px; border: 1px solid var(--hairline); border-radius: 9px;
  background: transparent; color: var(--muted); font-size: 18px; cursor: pointer;
  transition: color .16s ease, border-color .16s ease;
}
.icon-btn:hover { color: var(--paper); border-color: var(--hairline-strong); }
.auth-logo { width: 52px; height: 52px; display: block; margin: 0 auto 14px; }
.auth-title {
  margin: 0; text-align: center; font-family: var(--font-display);
  font-size: 26px; font-weight: 700; letter-spacing: 2px;
}
.auth-lead { margin: 10px auto 22px; max-width: 320px; color: var(--muted); text-align: center; font-size: 13.5px; line-height: 1.8; }
.form { display: grid; gap: 16px; }
.helper { margin: 4px 0 0; color: var(--muted); font-size: 13.5px; text-align: center; }
.helper a { font-weight: 700; }

/* ------------------------------------------------------------
   页脚
   ------------------------------------------------------------ */
.footer {
  margin-top: 96px; padding: 40px 0 48px;
  border-top: 1px solid var(--hairline);
  color: var(--faint); font-size: 13px; line-height: 2;
}
.footer-grid { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.footer .slogan { font-family: var(--font-display); color: var(--muted); letter-spacing: 1px; }
.footer .fine { font-family: var(--font-mono); font-size: 11px; letter-spacing: 1px; }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent); }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }

/* ------------------------------------------------------------
   响应式
   ------------------------------------------------------------ */
@media (max-width: 720px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .topbar { flex-wrap: wrap; justify-content: center; }
  .nav { justify-content: center; }
  .code-row { grid-template-columns: 1fr; }
  .section { padding: 52px 0 0; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
}