/* ====================================
   bhvideo - base.css: 全局元素重置 + 按钮/输入/复选/单选/开关基础组件
   ==================================== */
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  font-family: var(--font-sans);
  /* v5.0.136：原来是 `linear-gradient(180deg, var(--color-bg-soft) 0%, var(--color-bg) 200px)`
     —— 页面**顶部 200px 是一层浅黄**（hsl(33 100% 96%)）再渐变到白。实测截图：y=0 整行
     253,245,233，到 y=200(CSS) 才回到 255,255,255。用户指口播文案页「背景颜色就是那种浅黄色…
     有点乱」，这是其中最显眼的一块。
     改为与主界面一致的纯色底（必须显式写，否则暗色模式下会退回浏览器默认白底）。
     ⚠️ 共享样式：6 个子页一起变。改完 bump 引用页 `<link>` 上的 `?v=`。 */
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* 排版 */
h1 { font-size: 28px; font-weight: 700; margin: 0 0 var(--s-3); letter-spacing: -0.5px; }
h2 { font-size: 22px; font-weight: 700; margin: 0 0 var(--s-2); letter-spacing: -0.3px; }
h3 { font-size: 18px; font-weight: 600; margin: 0 0 var(--s-2); }
p  { margin: 0 0 var(--s-2); }
a  { color: var(--color-brand-600); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 通用容器 */
.container { max-width: 1180px; margin: 0 auto; padding: var(--s-6); }

/* ===== Button (5 变体 × 3 尺寸) ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  height: var(--btn-h-md); padding: 0 16px;
  border-radius: var(--radius-md);
  font-size: 0.875rem; font-weight: 500;
  cursor: pointer;
  transition: background 120ms, color 120ms, border-color 120ms, transform 60ms, box-shadow 120ms, filter 120ms;
  border: 1px solid transparent;
  font-family: inherit;
  white-space: nowrap;
  text-decoration: none;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary {
  background: var(--color-brand-500); color: white;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover:not(:disabled) { background: var(--color-brand-600); transform: translateY(-1px); }
.btn-secondary {
  background: var(--color-bg-card); color: var(--color-brand-600);
  border: 1.5px solid var(--color-brand-200);
}
.btn-secondary:hover:not(:disabled) { background: var(--color-brand-50); border-color: var(--color-brand-400); }
.btn-ghost {
  background: transparent; color: var(--color-brand-600);
  font-weight: 500;
}
.btn-ghost:hover:not(:disabled) { background: var(--color-brand-50); }
.btn-outline {
  background: var(--color-bg-card); color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.btn-outline:hover:not(:disabled) { color: var(--color-brand-600); border-color: var(--color-brand-400); }
.btn-destructive {
  background: var(--color-danger); color: white;
}
.btn-destructive:hover:not(:disabled) { opacity: 0.9; }
.btn-sm { height: var(--btn-h-sm); padding: 0 12px; font-size: 0.8rem; }
.btn-md { height: var(--btn-h-md); padding: 0 16px; font-size: 0.875rem; }
.btn-lg { height: var(--btn-h-lg); padding: 0 20px; font-size: 0.95rem; }
.btn-cta {
  background: linear-gradient(135deg, var(--color-brand-500), var(--color-brand-700));
  color: white; font-weight: 600;
  box-shadow: var(--shadow-glow);
}
.btn-cta:hover:not(:disabled) { box-shadow: 0 6px 24px rgba(249,115,22,.32); transform: translateY(-1px); }
.btn-hero {
  background: var(--color-bg-card);
  background-image: linear-gradient(135deg, var(--color-bg-card), hsl(var(--brand-50)));
  color: var(--color-brand-700) !important;
  padding: 16px 36px; font-size: 15px;
  font-weight: 700; border-radius: var(--radius-md);
  border: 0;
  box-shadow: 0 8px 24px rgba(255,255,255,.15);
  letter-spacing: 0.3px;
  -webkit-text-fill-color: var(--color-brand-700);
  outline: none;
}
.btn-hero:hover:not(:disabled) { box-shadow: 0 8px 28px rgba(255,255,255,.3); transform: translateY(-1px); }
.btn-cta-outline {
  background: rgba(255,255,255,.1); color: white;
  padding: 16px 36px; font-size: 15px;
  font-weight: 600; border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,.3);
  cursor: pointer; font-family: inherit;
  transition: all .15s;
  display: inline-flex; align-items: center; gap: var(--s-2);
  backdrop-filter: blur(4px);
}
.btn-cta-outline:hover:not(:disabled) { background: rgba(255,255,255,.2); border-color: rgba(255,255,255,.5); transform: translateY(-1px); }
.btn-cta-outline:active { transform: scale(0.97); }

/* ===== Form 字段 ===== */
.field { display: flex; flex-direction: column; gap: var(--s-2); }
.field__label {
  font-size: 12px; color: var(--color-text-secondary); font-weight: 500;
}
.input, .select, .textarea {
  width: 100%;
  padding: 10px var(--s-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-family: inherit; font-size: 14px;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--color-brand-500);
  box-shadow: 0 0 0 3px var(--color-brand-100);
}
.input--lg { padding: 13px var(--s-4); font-size: 15px; }
.textarea { resize: vertical; min-height: 88px; font-family: inherit; line-height: 1.55; }

.select-wrapper { position: relative; }
.select-wrapper::after {
  content: "▾"; position: absolute; right: var(--s-3); top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary); pointer-events: none; font-size: 11px;
}
.select { padding-right: 32px; appearance: none; cursor: pointer; }

/* ===== Checkbox (custom) ===== */
.checkbox {
  display: inline-flex; align-items: center; gap: var(--s-2);
  cursor: pointer;
}
.checkbox input { display: none; }
.checkbox__square {
  width: 16px; height: 16px;
  border-radius: 4px;
  border: 1.5px solid var(--color-border);
  display: inline-flex; align-items: center; justify-content: center;
  color: transparent; flex-shrink: 0;
  transition: all .15s;
}
.checkbox:hover .checkbox__square { border-color: var(--color-brand-400); }
.checkbox input:checked + .checkbox__square {
  background: var(--color-brand-500);
  border-color: var(--color-brand-500);
  color: white;
}
.checkbox input:checked + .checkbox__square::after {
  content: "✓";
  font-size: 11px;
  color: white;
}

/* ===== Radio (custom, pill 样式) ===== */
.radio-pill {
  padding: 6px var(--s-3);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text);
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
  user-select: none;
}
.radio-pill input { display: none; }
.radio-pill:hover { border-color: var(--color-brand-400); }
.radio-pill__dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border);
  transition: border-color .15s;
  flex-shrink: 0;
}
.radio-pill input:checked + .radio-pill__dot {
  border-color: var(--color-brand-500);
  border-width: 4px;
  padding: 1.5px;
  background: var(--color-brand-500);
}
.radio-pill input:checked ~ * {
  font-weight: 600; color: var(--color-brand-700);
  background: var(--color-brand-50);
  border-color: var(--color-brand-500);
}

/* ===== Toggle ===== */
.toggle {
  display: inline-flex; align-items: center; gap: var(--s-2);
  cursor: pointer;
}
.toggle input { display: none; }
.toggle__track {
  width: 36px; height: 20px;
  border-radius: var(--radius-pill);
  background: var(--color-neutral-300);
  position: relative;
  transition: background-color .2s;
}
.toggle__thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: white;
  position: absolute;
  top: 3px; left: 3px;
  transition: transform .2s;
  box-shadow: 0 1px 2px rgba(0,0,0,.2);
}
.toggle input:checked + .toggle__track { background: var(--color-brand-500); }
.toggle input:checked + .toggle__track .toggle__thumb { transform: translateX(16px); }

/* ===== Badge ===== */
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px var(--s-2);
  border-radius: var(--radius-pill);
  font-size: 11px; font-weight: 600;
  background: var(--color-brand-100); color: var(--color-brand-700);
}
.chip chip-success { background: hsl(var(--success) / 0.12); color: hsl(var(--success)); }
.chip chip-warning { background: hsl(var(--warning) / 0.15); color: hsl(var(--warning)); }
.chip chip-danger  { background: hsl(var(--destructive) / 0.12); color: hsl(var(--destructive)); }
.chip chip-info    { background: hsl(var(--info) / 0.12); color: hsl(var(--info)); }

/* ===== Alert ===== */
.alert {
  display: flex; gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--s-3);
  font-size: 13px;
  border: 1px solid;
}
.alert-info    { background: hsl(var(--info) / 0.08); color: hsl(var(--info)); border-color: hsl(var(--info) / 0.25); }
.alert-warning { background: hsl(var(--warning) / 0.08); color: hsl(var(--warning-foreground)); border-color: hsl(var(--warning) / 0.3); }
.alert-danger  { background: hsl(var(--destructive) / 0.08); color: hsl(var(--destructive)); border-color: hsl(var(--destructive) / 0.25); }
.alert-success { background: hsl(var(--success) / 0.08); color: hsl(var(--success)); border-color: hsl(var(--success) / 0.25); }
.alert-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  flex: 0 0 16px;          /* 防止 flex 子项被拉伸 */
}

/* utility */
.text-muted { color: var(--color-text-secondary); font-size: 12px; }
.text-bold { font-weight: 600; }
.text-center { text-align: center; }
.divider { height: 1px; background: var(--color-border); margin: var(--s-4) 0; }
.divider--dashed { background: none; border-top: 1px dashed var(--color-border); }
.hidden { display: none !important; }

/* ===== Icon 尺寸锁定 (v5.0.9.3: 解决 Edge/Safari 下 SVG 被 flex 拉伸) ===== */
.icon-sm {
  width: 16px !important;
  height: 16px !important;
  min-width: 16px !important;
  max-width: 16px !important;
  flex-shrink: 0 !important;
  display: block;
}

/* ===== Modal (v5.0.9.2: 数字人页之前缺这规则, 默认 display:block 导致 modal 永远显示) ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  display: none; align-items: center; justify-content: center;
  padding: 24px;
}
.modal-overlay.open { display: flex; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.modal-card {
  position: relative;
  background: hsl(var(--card));
  border-radius: var(--radius-lg);
  border: 1px solid hsl(var(--border));
  box-shadow: var(--shadow-lg);
  max-width: 480px; width: 100%;
  animation: modal-in 240ms cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-card-lg { max-width: 720px; }
.modal-card-xl { max-width: 900px; }
@keyframes modal-in {
  from { opacity: 0; transform: translateY(8px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid hsl(var(--border));
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 1rem; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.modal-title-icon, .modal-header .modal-title svg {
  width: 16px; height: 16px; flex-shrink: 0; color: hsl(var(--muted-foreground));
}
.modal-body { padding: 20px; }
.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid hsl(var(--border));
  display: flex; justify-content: flex-end; gap: 8px;
  background: hsl(var(--muted) / 0.3);
}