/* ==========================================================
   EnjakuAi 主页样式 · 参考 sousaku.ai 深色创作平台风格
   ========================================================== */

:root {
  color-scheme: dark;
  --bg: #09090b;
  --bg-soft: #101014;
  --card: #131318;
  --card-2: #17171d;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f4f4f6;
  --text-dim: #a2a2ae;
  --text-faint: #6e6e7a;
  --accent: #6d7cff;
  --accent-2: #8b5cf6;
  --grad-primary: linear-gradient(135deg, #6d7cff 0%, #7c5cf6 100%);
  --grad-phoenix: linear-gradient(135deg, #ff8a3d 0%, #ff5c5c 55%, #c04bff 100%);
  --amber: #ffb224;
  --green: #34d399;
  --red: #f87171;
  --sidebar-w: 250px;
  --radius: 18px;
  --shadow-1: 0 8px 30px rgba(0, 0, 0, 0.35);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(109, 124, 255, 0.35); }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img, svg { display: block; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
}

/* ---------- 氛围光 ---------- */
.bg-glow {
  position: fixed;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
}
.bg-glow--a { top: -180px; right: -120px; background: rgba(109, 124, 255, 0.13); }
.bg-glow--b { bottom: -220px; left: 180px; background: rgba(255, 92, 92, 0.07); }

/* ---------- 布局骨架 ---------- */
.app { position: relative; z-index: 1; min-height: 100vh; }

/* ---------- 侧边栏 ---------- */
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  background: rgba(13, 13, 17, 0.92);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 50;
  backdrop-filter: blur(12px);
  transition: transform 0.28s ease;
}
.sidebar__scroll {
  flex: 1;
  overflow-y: auto;
  padding: 18px 14px 8px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.12) transparent;
}
.sidebar__scroll::-webkit-scrollbar { width: 5px; }
.sidebar__scroll::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.12); border-radius: 3px; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 16px;
}
.brand__logo { display: grid; place-items: center; }
.brand__name {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.side-nav { display: flex; flex-direction: column; gap: 2px; }
.side-nav__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 11px;
  font-size: 14px;
  color: var(--text-dim);
  transition: background 0.15s, color 0.15s;
}
.side-nav__item:hover { background: rgba(255, 255, 255, 0.05); color: var(--text); }
.side-nav__item.is-active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-weight: 600;
}
.side-nav__item .ico { width: 17px; height: 17px; flex-shrink: 0; opacity: 0.9; }

.side-group__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  text-transform: uppercase;
  padding: 18px 12px 6px;
}

.pill {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
  line-height: 1.3;
}
.pill--new { background: rgba(109, 124, 255, 0.18); color: #9aa5ff; }
.pill--beta { background: rgba(167, 139, 250, 0.16); color: #c4b5fd; }

.sidebar__bottom {
  padding: 14px;
  border-top: 1px solid var(--border);
}
.mascot { display: grid; place-items: center; padding-bottom: 10px; }
.signin-card {
  display: block;
  border: 1px solid var(--border-strong);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  border-radius: 14px;
  padding: 12px 14px;
  transition: border-color 0.2s, transform 0.2s;
}
.signin-card:hover { border-color: rgba(139, 92, 246, 0.55); transform: translateY(-1px); }
.signin-card strong { display: block; font-size: 14px; margin-bottom: 4px; }
.signin-card span { font-size: 12px; color: var(--text-dim); line-height: 1.5; }

.sidebar-scrim {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
  z-index: 40;
}

/* ---------- 主内容 ---------- */
.main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 0 32px;
  height: 62px;
  background: rgba(9, 9, 11, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.top-nav { display: flex; align-items: center; gap: 24px; }
.top-nav a {
  font-size: 13.5px;
  color: var(--text-dim);
  transition: color 0.15s;
  white-space: nowrap;
}
.top-nav a:hover { color: var(--text); }
.top-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hamburger { display: none; padding: 8px; border-radius: 10px; }
.hamburger svg { fill: var(--text); }
.hamburger:hover { background: rgba(255, 255, 255, 0.06); }

/* 顶栏圆形图标按钮（主题切换 / 语言切换） */
.top-icon-btn {
  position: relative;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-dim);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.top-icon-btn:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.06);
}
.top-icon-btn svg {
  position: absolute;
  width: 18px;
  height: 18px;
  transition: opacity 0.25s, transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.theme-toggle__moon { opacity: 0; transform: rotate(90deg) scale(0.4); }

/* 渐变描边登录按钮（sousaku 风格） */
.btn-signin {
  position: relative;
  border-radius: 999px;
  padding: 9px 18px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text);
  border: 1.5px solid transparent;
  background:
    linear-gradient(var(--bg-soft), var(--bg-soft)) padding-box,
    linear-gradient(90deg, #22d3a5, #38bdf8, #818cf8, #e879f9, #fb7185) border-box;
  background-size: 100% 100%, 250% 100%;
  animation: borderFlow 6s linear infinite;
  transition: box-shadow 0.2s, transform 0.15s;
}
.btn-signin:hover {
  box-shadow: 0 0 22px rgba(129, 140, 248, 0.35);
  transform: translateY(-1px);
}
@keyframes borderFlow {
  0% { background-position: 0 0, 0% 0; }
  100% { background-position: 0 0, 250% 0; }
}

/* ---------- 内容容器 ---------- */
.content {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px 40px;
  flex: 1;
}

/* ---------- Hero ---------- */
.hero { padding: 64px 0 8px; text-align: center; }
.hero__title {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.sparkle { display: inline-block; vertical-align: -3px; margin-left: 6px; animation: twinkle 2.6s ease-in-out infinite; }
@keyframes twinkle {
  0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; }
  50% { transform: scale(0.86) rotate(8deg); opacity: 0.85; }
}
.hero__sub {
  margin: 16px auto 36px;
  max-width: 640px;
  font-size: 15.5px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ---------- 创作输入框 ---------- */
.composer {
  text-align: left;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.012)), var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 18px;
  box-shadow: var(--shadow-1);
}
.composer__tabs {
  display: inline-flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 14px;
  overflow-x: auto;
  max-width: 100%;
}
.composer__tab {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--text-dim);
  white-space: nowrap;
  transition: background 0.18s, color 0.18s, box-shadow 0.18s;
}
.composer__tab .ico { width: 15px; height: 15px; }
.composer__tab:hover { color: var(--text); }
.composer__tab.is-active {
  background: var(--grad-primary);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(109, 124, 255, 0.35);
}

#composerInput {
  width: 100%;
  min-height: 150px;
  resize: vertical;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  line-height: 1.7;
  padding: 14px 12px;
}
#composerInput::placeholder { color: var(--text-faint); }

.composer__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.composer__options { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.composer__actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }

.select-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-dim);
}
.select-pill .ico { width: 15px; height: 15px; fill: currentColor; }
.select-pill select {
  appearance: none;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  max-width: 150px;
}
.select-pill select option { background: var(--card-2); color: var(--text); }
.select-pill__key {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(109, 124, 255, 0.13);
  border-radius: 6px;
  padding: 2px 6px;
}
.media-only { transition: opacity 0.2s; }
.composer[data-tab="chat"] .media-only { opacity: 0.35; pointer-events: none; }

.toggle-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  cursor: pointer;
  padding: 8px 10px;
}
.toggle-pill input { display: none; }
.toggle-pill__track {
  width: 34px;
  height: 19px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  position: relative;
  transition: background 0.2s;
}
.toggle-pill__track::after {
  content: "";
  position: absolute;
  top: 2.5px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.2s;
}
.toggle-pill input:checked + .toggle-pill__track { background: var(--accent); }
.toggle-pill input:checked + .toggle-pill__track::after { transform: translateX(14px); }

/* ---------- 按钮 ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: 13px;
  transition: box-shadow 0.2s, transform 0.15s, filter 0.2s;
  box-shadow: 0 6px 20px rgba(109, 124, 255, 0.3);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 26px rgba(109, 124, 255, 0.45); filter: brightness(1.06); }
.btn-primary .ico { width: 16px; height: 16px; fill: currentColor; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  padding: 11px 20px;
  border-radius: 13px;
  transition: background 0.2s, border-color 0.2s;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.07); border-color: rgba(255, 255, 255, 0.22); }

.btn-ghost-grad {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(139, 92, 246, 0.4);
  background: rgba(139, 92, 246, 0.07);
  font-size: 13.5px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 12px;
  background-clip: padding-box;
  color: #c4b5fd;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.btn-ghost-grad .ico { width: 15px; height: 15px; fill: #c4b5fd; }
.btn-ghost-grad:hover { border-color: rgba(139, 92, 246, 0.8); box-shadow: 0 0 18px rgba(139, 92, 246, 0.25); }

.btn-sm { font-size: 13px; padding: 8px 16px; border-radius: 11px; }
.btn-lg { font-size: 15px; padding: 14px 30px; border-radius: 15px; }

/* ---------- 区块通用 ---------- */
.section { padding: 84px 0 0; }
.section__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}
.section__icon {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  background: rgba(109, 124, 255, 0.15);
}
.section__icon svg { fill: #9aa5ff; }
.section__head h2 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.section__desc { color: var(--text-faint); font-size: 13.5px; margin: -14px 0 20px; }
.section__more { margin-left: auto; }

/* ---------- 功能卡片行 ---------- */
.feature-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.22s, border-color 0.22s, box-shadow 0.22s;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(109, 124, 255, 0.45);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(109, 124, 255, 0.08);
}
.feature-card__icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
}
.feature-card__icon svg { fill: #fff; }
.feature-card__icon--chat { background: linear-gradient(135deg, #6d7cff, #8b5cf6); }
.feature-card__icon--image { background: linear-gradient(135deg, #ff7ac3, #ff9a62); }
.feature-card__icon--video { background: linear-gradient(135deg, #38bdf8, #6d7cff); }
.feature-card__icon--role { background: linear-gradient(135deg, #a78bfa, #f472b6); }
.feature-card h3 { font-size: 18px; font-weight: 700; }
.feature-card p { font-size: 13.5px; color: var(--text-dim); line-height: 1.65; flex: 1; }
.feature-card__actions { display: flex; gap: 8px; }

.badge {
  align-self: flex-start;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 3px 10px;
  border-radius: 999px;
}
.badge--feature { background: rgba(255, 178, 36, 0.14); color: var(--amber); }
.badge--beta { background: rgba(167, 139, 250, 0.16); color: #c4b5fd; }
.badge--grad { background: linear-gradient(90deg, rgba(255, 138, 61, 0.18), rgba(192, 75, 255, 0.18)); color: #ffb98a; }

/* ---------- 模型 chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text-dim);
  transition: border-color 0.18s, color 0.18s, transform 0.18s;
  cursor: default;
}
.chip:hover {
  border-color: rgba(109, 124, 255, 0.55);
  color: var(--text);
  transform: translateY(-2px);
}

/* ---------- 快速开始 ---------- */
.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.app-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.22s, border-color 0.22s, box-shadow 0.22s;
  display: block;
}
.app-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45);
}
.app-card__cover {
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.app-card__cover svg { fill: rgba(255, 255, 255, 0.92); filter: drop-shadow(0 4px 14px rgba(0, 0, 0, 0.3)); }
.app-card__cover::before {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  filter: blur(46px);
  top: -80px;
  right: -50px;
}
.app-card__cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 88%, rgba(255, 255, 255, 0.12), transparent 46%);
}
.cover--chat { background: linear-gradient(135deg, #4f46e5, #7c3aed); }
.cover--photo { background: linear-gradient(135deg, #ec4899, #f97316); }
.cover--video { background: linear-gradient(135deg, #0ea5e9, #6366f1); }
.cover--role { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.cover--key { background: linear-gradient(135deg, #10b981, #0ea5e9); }
.cover--more { background: linear-gradient(135deg, #27272a, #3f3f46); }
.app-card__body { padding: 16px 18px 18px; }
.app-card__body h3 { font-size: 15.5px; font-weight: 700; margin-bottom: 6px; }
.app-card__body p { font-size: 12.5px; color: var(--text-dim); line-height: 1.6; }

/* ---------- 页脚 ---------- */
.footer {
  margin-top: 100px;
  border-top: 1px solid var(--border);
  padding-top: 44px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: 28px;
}
.footer__brand .brand { padding: 0 0 12px; }
.footer__slogan { font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.footer__desc { font-size: 12.5px; color: var(--text-faint); line-height: 1.7; max-width: 300px; }
.footer__col { display: flex; flex-direction: column; gap: 10px; }
.footer__col h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-faint);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.footer__col a { font-size: 13.5px; color: var(--text-dim); transition: color 0.15s; }
.footer__col a:hover { color: var(--text); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 20px 0 8px;
  font-size: 12.5px;
  color: var(--text-faint);
}
.footer__bottom .dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 6px;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 16px);
  background: var(--card-2);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: 13.5px;
  padding: 12px 20px;
  border-radius: 13px;
  box-shadow: var(--shadow-1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 100;
  max-width: min(90vw, 480px);
  text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .feature-row { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-scrim.show { opacity: 1; pointer-events: auto; }
  .main { margin-left: 0; }
  .hamburger { display: grid; place-items: center; }
  .top-nav { display: none; }
  .content { padding: 0 18px 32px; }
  .hero { padding-top: 40px; }
}
@media (max-width: 640px) {
  .feature-row { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .composer__bar { flex-direction: column; align-items: stretch; }
  .composer__actions { margin-left: 0; justify-content: stretch; }
  .composer__actions > * { flex: 1; justify-content: center; }
}

/* ---------- 登录 / 注册 ---------- */
[hidden] { display: none !important; }

.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  z-index: 90;
  display: grid;
  place-items: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.2s;
}
.auth-overlay.show { opacity: 1; }
.auth-modal {
  position: relative;
  width: min(400px, 100%);
  background: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: 22px;
  padding: 30px 28px 28px;
  box-shadow: var(--shadow-1);
  transform: translateY(10px);
  transition: transform 0.2s;
}
.auth-overlay.show .auth-modal { transform: none; }
.auth-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--text-dim);
}
.auth-close:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); }
.auth-close svg { fill: currentColor; }
.auth-brand { display: flex; justify-content: center; margin-bottom: 14px; }
.auth-tabs {
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 20px;
}
.auth-tab {
  flex: 1;
  padding: 9px 0;
  border-radius: 999px;
  font-size: 14px;
  color: var(--text-dim);
  text-align: center;
  transition: background 0.18s, color 0.18s;
}
.auth-tab.is-active { background: var(--grad-primary); color: #fff; font-weight: 600; }
.field { display: block; margin-bottom: 14px; }
.field span { display: block; font-size: 12.5px; color: var(--text-dim); margin-bottom: 6px; }
.field input {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 14px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field input:focus { border-color: rgba(109, 124, 255, 0.6); box-shadow: 0 0 0 3px rgba(109, 124, 255, 0.15); }
.auth-submit { width: 100%; justify-content: center; margin-top: 6px; }
.auth-submit[disabled] { opacity: 0.6; cursor: default; transform: none; }
.auth-msg {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.6;
  border-radius: 10px;
  padding: 10px 12px;
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.25);
  color: #fca5a5;
}
.auth-msg.is-ok {
  background: rgba(52, 211, 153, 0.08);
  border-color: rgba(52, 211, 153, 0.25);
  color: #6ee7b7;
}

/* ---------- 用户徽标 / 菜单 / 侧边栏用户卡片 ---------- */
.user-chip { position: relative; }
.user-chip__btn {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  padding: 5px 12px 5px 5px;
  transition: border-color 0.2s;
}
.user-chip__btn:hover { border-color: rgba(109, 124, 255, 0.5); }
.user-chip__avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
}
.user-chip__name {
  font-size: 13.5px;
  font-weight: 600;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-chip__btn svg { width: 14px; height: 14px; fill: var(--text-dim); }
.user-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  width: 200px;
  background: var(--card-2);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 6px;
  box-shadow: var(--shadow-1);
  z-index: 60;
}
.user-menu__info { padding: 10px 12px; border-bottom: 1px solid var(--border); margin-bottom: 6px; }
.user-menu__info strong { display: block; font-size: 13.5px; margin-bottom: 2px; }
.user-menu__info span { font-size: 12px; color: var(--text-dim); }
.user-menu__item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 9px 12px;
  border-radius: 9px;
  font-size: 13px;
  color: var(--text-dim);
}
.user-menu__item:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); }

.user-card { cursor: default; }
.user-card strong {
  display: block;
  font-size: 14px;
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.user-card__actions { display: flex; gap: 8px; margin-top: 10px; }
.user-card__actions a,
.user-card__actions button {
  flex: 1;
  text-align: center;
  font-size: 12px;
  padding: 7px 0;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  transition: color 0.15s, border-color 0.15s;
}
.user-card__actions a:hover,
.user-card__actions button:hover { color: var(--text); border-color: rgba(109, 124, 255, 0.5); }

/* ---------- Key 管理弹窗 ---------- */
.key-mgr-modal { width: min(480px, 100%); }
.key-mgr__title { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.key-mgr__desc { font-size: 12.5px; color: var(--text-dim); line-height: 1.7; margin-bottom: 16px; }
.key-mgr__desc strong { color: #ffb98a; }
.key-mgr__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: 16px;
}
.key-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 13px;
  padding: 12px 14px;
}
.key-row__info { flex: 1; min-width: 0; }
.key-row__info strong {
  display: block;
  font-size: 13.5px;
  margin-bottom: 3px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.key-row__info span { font-size: 11.5px; color: var(--text-faint); }
.key-row__badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 999px;
  background: rgba(255, 178, 36, 0.14);
  color: var(--amber);
  margin-left: 6px;
  vertical-align: 1px;
}
.key-row__del {
  font-size: 12px;
  color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 6px 10px;
  transition: color 0.15s, border-color 0.15s;
}
.key-row__del:hover { color: var(--red); border-color: rgba(248, 113, 113, 0.4); }
.key-row__del[disabled] { opacity: 0.4; cursor: not-allowed; }
.key-row__del[disabled]:hover { color: var(--text-faint); border-color: var(--border); }

/* 开关（对齐面板「无限配额」样式） */
.switch { position: relative; display: inline-block; width: 40px; height: 22px; flex-shrink: 0; cursor: pointer; }
.switch input { display: none; }
.switch__track {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  transition: background 0.2s;
}
.switch__track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.2s;
}
.switch input:checked + .switch__track { background: var(--grad-primary); }
.switch input:checked + .switch__track::after { transform: translateX(18px); }

.key-mgr__new { display: flex; gap: 10px; }
.key-mgr__new input {
  flex: 1;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
  font: inherit;
  font-size: 13.5px;
  color: var(--text);
  outline: none;
}
.key-mgr__new input:focus { border-color: rgba(109, 124, 255, 0.6); }
.key-mgr__empty { text-align: center; color: var(--text-faint); font-size: 13px; padding: 18px 0; }

/* ---------- Key 管理：默认标识与设为默认按钮 ---------- */
.key-row__defpill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  color: #ffb224;
  background: rgba(255, 178, 36, 0.12);
  border: 1px solid rgba(255, 178, 36, 0.35);
  border-radius: 999px;
  padding: 3px 10px;
}
.key-row__setdef {
  font-size: 11px;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 3px 10px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.key-row__setdef:hover { color: var(--text); border-color: rgba(109, 124, 255, 0.5); }

/* ---------- Key 管理：默认中徽标 / 设为默认按钮 ---------- */
.key-row__defpill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  color: #ffb224;
  background: rgba(255, 178, 36, 0.12);
  border: 1px solid rgba(255, 178, 36, 0.35);
  border-radius: 999px;
  padding: 3px 10px;
}
.key-row__setdef {
  font-size: 11px;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 3px 10px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.key-row__setdef:hover { color: var(--text); border-color: rgba(109, 124, 255, 0.5); }

/* ==========================================================
   浅色主题（html.theme-light）
   生效时机由 JS 决定：优先本地记忆的手动选择，否则跟随浏览器外观
   （见 index.html 头部内联脚本与 main.js 主题切换部分）。
   仅覆盖变量与少数写死的白色半透明配色，上方深色规则保持不变。
   ========================================================== */
html.theme-light {
  color-scheme: light;
  --bg: #f6f7fb;
  --bg-soft: #ffffff;
  --card: #ffffff;
  --card-2: #eef0f6;
  --border: rgba(15, 23, 42, 0.1);
  --border-strong: rgba(15, 23, 42, 0.18);
  --text: #191b22;
  --text-dim: #565b6c;
  --text-faint: #878da1;
  --accent: #4f46e5;
  --accent-2: #7c3aed;
  --grad-primary: linear-gradient(135deg, #4d5cf5 0%, #6b4cf2 100%);
  --amber: #b45309;
  --green: #059669;
  --red: #dc2626;
  --shadow-1: 0 8px 30px rgba(23, 26, 43, 0.08);
}

html.theme-light code { background: rgba(15, 23, 42, 0.06); }

/* 氛围光在浅底上略微加强才可见 */
html.theme-light .bg-glow--a { background: rgba(109, 124, 255, 0.16); }
html.theme-light .bg-glow--b { background: rgba(255, 92, 92, 0.1); }

html.theme-light .sidebar { background: rgba(255, 255, 255, 0.86); }
html.theme-light .sidebar__scroll { scrollbar-color: rgba(15, 23, 42, 0.18) transparent; }
html.theme-light .sidebar__scroll::-webkit-scrollbar-thumb { background: rgba(15, 23, 42, 0.18); }
html.theme-light .side-nav__item:hover { background: rgba(15, 23, 42, 0.05); }
html.theme-light .side-nav__item.is-active { background: rgba(15, 23, 42, 0.07); }
html.theme-light .pill--new { color: #4f46e5; }
html.theme-light .pill--beta { color: #6d28d9; }
html.theme-light .signin-card { background: linear-gradient(180deg, rgba(109, 124, 255, 0.07), rgba(192, 75, 255, 0.03)); }
html.theme-light .sidebar-scrim { background: rgba(15, 23, 42, 0.4); }

html.theme-light .topbar {
  background: rgba(246, 247, 251, 0.8);
  border-bottom-color: var(--border);
}
html.theme-light .hamburger:hover { background: rgba(15, 23, 42, 0.06); }

/* 顶栏圆形图标按钮 */
html.theme-light .top-icon-btn { background: rgba(15, 23, 42, 0.04); }
html.theme-light .top-icon-btn:hover { background: rgba(15, 23, 42, 0.08); }
html.theme-light .theme-toggle__sun { opacity: 0; transform: rotate(-90deg) scale(0.4); }
html.theme-light .theme-toggle__moon { opacity: 1; transform: none; }

html.theme-light .composer { background: linear-gradient(180deg, rgba(109, 124, 255, 0.04), rgba(109, 124, 255, 0)), var(--card); }
html.theme-light .composer__tabs { background: rgba(15, 23, 42, 0.05); }
html.theme-light .select-pill { background: rgba(15, 23, 42, 0.04); }
html.theme-light .toggle-pill__track { background: rgba(15, 23, 42, 0.18); }

html.theme-light .btn-ghost { background: rgba(15, 23, 42, 0.04); }
html.theme-light .btn-ghost:hover { background: rgba(15, 23, 42, 0.08); border-color: rgba(15, 23, 42, 0.25); }
html.theme-light .btn-ghost-grad { color: #6d28d9; }
html.theme-light .btn-ghost-grad .ico { fill: #6d28d9; }

html.theme-light .section__icon svg { fill: #4f46e5; }
html.theme-light .badge--feature { background: rgba(180, 83, 9, 0.1); }
html.theme-light .badge--beta { color: #6d28d9; }
html.theme-light .badge--grad { color: #c2410c; }

html.theme-light .chip { background: rgba(15, 23, 42, 0.04); }

html.theme-light .feature-card:hover { box-shadow: 0 12px 34px rgba(23, 26, 43, 0.1), 0 0 0 1px rgba(109, 124, 255, 0.1); }
html.theme-light .app-card:hover { box-shadow: 0 14px 40px rgba(23, 26, 43, 0.12); }

html.theme-light .auth-overlay { background: rgba(15, 23, 42, 0.45); }
html.theme-light .auth-close:hover { background: rgba(15, 23, 42, 0.06); }
html.theme-light .auth-tabs { background: rgba(15, 23, 42, 0.05); }
html.theme-light .field input { background: rgba(15, 23, 42, 0.04); }
html.theme-light .auth-msg { background: rgba(220, 38, 38, 0.06); color: #b91c1c; }
html.theme-light .auth-msg.is-ok { background: rgba(5, 150, 105, 0.07); color: #047857; }

html.theme-light .user-chip__btn { background: rgba(15, 23, 42, 0.04); }
html.theme-light .user-menu__item:hover { background: rgba(15, 23, 42, 0.06); }

html.theme-light .key-row { background: rgba(15, 23, 42, 0.03); }
html.theme-light .key-row__defpill { color: var(--amber); }
html.theme-light .key-row__setdef { background: rgba(15, 23, 42, 0.05); }
html.theme-light .switch__track { background: rgba(15, 23, 42, 0.18); }
html.theme-light .key-mgr__new input { background: rgba(15, 23, 42, 0.04); }
html.theme-light .key-mgr__desc strong { color: #c2410c; }

/* ================= 用户头像：裁切弹窗 ================= */
.user-chip__avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  display: block;
}
.avatar-modal { width: min(420px, 100%); }
.avatar-modal__title { margin: 0 0 16px; font-size: 17px; font-weight: 700; }
.avatar-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--border-strong);
}
.avatar-stage img { display: block; max-width: 100%; }
.avatar-stage img[hidden] { display: none; }
.avatar-stage__empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 10px;
  color: var(--text-faint);
  font-size: 13px;
}
.avatar-stage__empty .ico { width: 34px; height: 34px; }
.avatar-stage__empty[hidden] { display: none; }
.avatar-ops { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.avatar-modal__hint { margin: 10px 0 0; font-size: 12px; color: var(--text-faint); line-height: 1.5; }
.avatar-modal__foot { display: flex; justify-content: flex-end; gap: 10px; margin-top: 16px; }
.avatar-btn {
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text-dim);
  border-radius: 10px;
  padding: 7px 13px;
  font-size: 13px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, filter 0.15s;
}
.avatar-btn:hover:not(:disabled) { color: var(--text); border-color: var(--accent); }
.avatar-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.avatar-btn--primary { background: var(--grad-primary); border: none; color: #fff; font-weight: 600; }
.avatar-btn--primary:hover:not(:disabled) { color: #fff; filter: brightness(1.08); }
.avatar-btn--danger:hover:not(:disabled) { color: #ff7a7a; border-color: #ff7a7a; }
.avatar-btn--ghost { background: transparent; }
html.theme-light .avatar-stage { background: #f3f4fa; }