/* ============================================================
   themes.css v4 —— 只保留两套主题
     · Sky   （无 data-theme，默认，见 theme.css + index.html）
     · Night （深色终端，含排版 + 布局）
   ============================================================ */

/* ======================= NIGHT 深色终端 =======================
   等宽字体 · 直角 · 霓虹发光 · 网格底 · 两栏紧凑布局
   =============================================================== */
html[data-theme="night"] {
  --sky-50:#111a2b; --sky-100:#16203a; --sky-200:#1f2d4d; --sky-300:#2d3f6b;
  --sky-400:#4a5fa8; --sky-500:#7c8cf8; --sky-600:#a5b4fc; --sky-700:#c7d2fe; --sky-900:#e0e7ff;
  --gold-50:#2a2413; --gold-100:#3a3118; --gold-200:#5c4d22; --gold-300:#8a7331;
  --gold-400:#c4a13f; --gold-500:#fbbf24; --gold-600:#fcd34d;
  --ink-900:#f8fafc; --ink-700:#e2e8f0; --ink-600:#b8c4d6; --ink-500:#8b9bb0;
  --ink-400:#64748b; --ink-300:#475569; --ink-200:#334155; --ink-100:#1e293b;
  --bg-app: #070b14;
  --grad-primary: linear-gradient(135deg,#7c8cf8,#6366f1);
  --grad-sat: linear-gradient(135deg,#fb923c,#ea580c);
  --grad-fast: linear-gradient(135deg,#fcd34d,#f59e0b);
  --grad-math: linear-gradient(135deg,#5eead4,#0d9488);
  --grad-review: linear-gradient(135deg,#a5b4fc,#6366f1);
  --sh-xs: 0 0 10px rgba(124,140,248,.18);
  --sh-sm: 0 0 16px rgba(124,140,248,.22);
  --sh-md: 0 0 24px rgba(124,140,248,.26);
  --sh-lg: 0 0 36px rgba(124,140,248,.32);
  --r-sm: 2px; --r-md: 3px; --r-lg: 4px; --r-xl: 6px; --r-pill: 3px;
}
html[data-theme="night"] body,
html[data-theme="night"] body.wl {
  font-family: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace !important;
  background: #070b14 !important;
  background-image:
    linear-gradient(rgba(124,140,248,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,140,248,.055) 1px, transparent 1px) !important;
  background-size: 28px 28px !important;
  color: #b8c4d6 !important;
}
html[data-theme="night"] h1,
html[data-theme="night"] h2,
html[data-theme="night"] .ptitle {
  font-family: inherit !important; color: #f8fafc !important;
  letter-spacing: 1.5px !important; text-transform: uppercase !important;
  text-shadow: 0 0 14px rgba(124,140,248,.55) !important;
}
html[data-theme="night"] .wl-card,
html[data-theme="night"] .qcard,
html[data-theme="night"] .q,
html[data-theme="night"] .card,
html[data-theme="night"] .section-card,
html[data-theme="night"] .passage,
html[data-theme="night"] .explain {
  background: rgba(13, 20, 36, .82) !important;
  border: 1px solid rgba(124,140,248,.38) !important;
  border-radius: 3px !important;
  box-shadow: 0 0 20px rgba(124,140,248,.14), inset 0 0 30px rgba(124,140,248,.04) !important;
  color: #b8c4d6 !important;
}
html[data-theme="night"] .opt,
html[data-theme="night"] .tab,
html[data-theme="night"] .btn,
html[data-theme="night"] .nbtn,
html[data-theme="night"] .wl-btn,
html[data-theme="night"] .anskey,
html[data-theme="night"] .timerbtn {
  border-radius: 3px !important;
  font-family: inherit !important;
  background: rgba(13,20,36,.7) !important;
  border: 1px solid rgba(124,140,248,.4) !important;
  color: #c7d2fe !important;
  box-shadow: 0 0 12px rgba(124,140,248,.14) !important;
}
html[data-theme="night"] .wl-btn,
html[data-theme="night"] .tab.active,
html[data-theme="night"] .nbtn.primary {
  background: linear-gradient(135deg,#6366f1,#4f46e5) !important;
  color: #fff !important;
  box-shadow: 0 0 20px rgba(99,102,241,.45) !important;
  border-color: rgba(165,180,252,.6) !important;
}
html[data-theme="night"] .wl-btn:hover,
html[data-theme="night"] .opt:hover:not(.locked) {
  background: rgba(99,102,241,.2) !important;
  box-shadow: 0 0 24px rgba(124,140,248,.4) !important;
}
html[data-theme="night"] .glow { display: none !important; }
html[data-theme="night"] .spark { background: #a5b4fc !important; box-shadow: 0 0 14px 3px rgba(165,180,252,.6) !important; }
html[data-theme="night"] .logo-mark {
  background: linear-gradient(140deg,#6366f1,#312e81) !important;
  border-radius: 4px !important;
  box-shadow: 0 0 26px rgba(99,102,241,.55) !important;
}
html[data-theme="night"] .tagline { color: #7c8cf8 !important; }
html[data-theme="night"] .stem, html[data-theme="night"] .qnum { color: #e2e8f0 !important; }
html[data-theme="night"] .wl-pill { border-radius: 2px !important; background: rgba(99,102,241,.22) !important; color: #c7d2fe !important; }

/* ---------- Night 首页布局：两栏紧凑 + 垂直居中（消除电脑上的大片空白） ---------- */
html[data-theme="night"] body {
  display: flex !important; align-items: center !important; justify-content: center !important;
  padding: 28px 20px !important; min-height: 100vh !important;
}
html[data-theme="night"] .shell {
  max-width: 940px !important; width: 100% !important; padding: 0 !important;
}
html[data-theme="night"] .panel {
  display: grid !important;
  grid-template-columns: 268px minmax(0, 1fr) !important;
  grid-template-rows: auto auto auto !important;
  gap: 0 30px !important;
  padding: 26px 28px !important;
  text-align: left !important;
  align-items: start !important;
  border-radius: 4px !important;
  overflow: visible !important;
}

/* 左栏：标识 + 标题 + 标语（紧凑，不再撑高） */
html[data-theme="night"] .logo-wrap {
  grid-column: 1 !important; grid-row: 1 !important;
  margin: 0 0 14px !important; padding: 0 !important;
  width: auto !important; height: auto !important;
  display: flex !important; align-items: center !important; justify-content: flex-start !important;
}
html[data-theme="night"] .logo-halo { display: none !important; }
html[data-theme="night"] .logo-mark { width: 44px !important; height: 44px !important; }
html[data-theme="night"] .logo-mark svg { width: 25px !important; height: 25px !important; }

html[data-theme="night"] h1 {
  grid-column: 1 !important; grid-row: 2 !important;
  margin: 0 0 8px !important; padding: 0 !important;
  font-size: 24px !important; text-align: left !important; align-self: start !important;
}
html[data-theme="night"] .tagline {
  grid-column: 1 !important; grid-row: 3 !important;
  margin: 0 0 18px !important; padding: 0 0 0 11px !important;
  font-size: 11px !important; line-height: 1.6 !important; text-align: left !important;
  border-left: 2px solid #6366f1 !important;
}
html[data-theme="night"] .minor {
  grid-column: 1 !important; grid-row: 4 !important;
  margin: 0 !important; text-align: left !important;
  padding: 12px 0 0 !important; border-top: 1px solid rgba(124,140,248,.2) !important;
}
html[data-theme="night"] .foot {
  grid-column: 1 !important; grid-row: 5 !important;
  margin: 0 !important; padding: 10px 0 0 !important;
  text-align: left !important; border-top: 1px solid rgba(124,140,248,.2) !important;
}

/* 右栏：正文 + 按钮（跨所有行，与左栏同高） */
html[data-theme="night"] .blurb {
  grid-column: 2 !important; grid-row: 1 / 4 !important;
  margin: 0 0 20px !important; padding: 0 0 0 26px !important;
  text-align: left !important; font-size: 14px !important; line-height: 1.85 !important;
  border-left: 1px solid rgba(124,140,248,.28) !important;
  align-self: start !important;
}
html[data-theme="night"] .grid-main {
  grid-column: 2 !important; grid-row: 4 / 6 !important;
  grid-template-columns: repeat(2, 1fr) !important;
  gap: 10px !important; margin: 0 !important;
  align-self: start !important;
}
html[data-theme="night"] .grid-main .wl-btn { padding: 14px 16px !important; font-size: 14px !important; }

@media (max-width: 760px) {
  html[data-theme="night"] .panel {
    grid-template-columns: 1fr !important; gap: 16px !important;
  }
  html[data-theme="night"] .logo-wrap,
  html[data-theme="night"] h1,
  html[data-theme="night"] .tagline,
  html[data-theme="night"] .minor,
  html[data-theme="night"] .foot,
  html[data-theme="night"] .blurb,
  html[data-theme="night"] .grid-main {
    grid-column: 1 !important; grid-row: auto !important;
  }
  html[data-theme="night"] .blurb { padding-left: 0 !important; border-left: none !important; }
  html[data-theme="night"] .minor, html[data-theme="night"] .foot { border-top: 1px solid rgba(124,140,248,.2) !important; }
}