/* ── 12. Surfaces & Stage Header ──────────────────────────── */
.surface {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.stage-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-line);
}

.stage-head-copy h2 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: var(--space-1);
}

.stage-head-copy p {
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-size: 13px;
  max-width: 560px;
}

.stage-head .actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  flex-shrink: 0;
}

.stage-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-bottom: var(--space-3);
  padding: 9px 18px 9px 14px;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: var(--color-brand);
  border: 1px solid var(--color-brand-dark);
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.38);
  animation: stage-back-attract 2.2s ease-in-out infinite;
  transition: background 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.stage-back-btn:hover {
  background: var(--color-brand-dark);
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.5);
  transform: translateX(-3px);
  animation: none;
}

.stage-back-arrow {
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
}

@keyframes stage-back-attract {
  0%, 100% { box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3); }
  50% { box-shadow: 0 4px 20px rgba(124, 58, 237, 0.6); }
}

.panel-kicker {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-brand);
}

/* ── 13. Form Controls ────────────────────────────────────── */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted);
}

.field.wide { grid-column: 1 / -1; }

input[type="text"],
input[type="password"],
input[type="number"],
input[type="time"],
input[type="datetime-local"],
input:not([type]),
select,
textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}

input:hover,
select:hover,
textarea:hover { border-color: var(--color-line-strong); }

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-focus);
}

input:disabled,
select:disabled,
textarea:disabled {
  background: var(--color-surface-soft);
  color: var(--color-faint);
  cursor: not-allowed;
}

textarea {
  min-height: 96px;
  resize: vertical;
  line-height: 1.6;
}

.compact-textarea { min-height: 72px; }
.copy-prompt-textarea { min-height: 120px; }
.voice-script-textarea { min-height: 140px; font-family: var(--font-mono); font-size: 13px; }

input[type="range"] {
  width: 100%;
  height: 6px;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background: var(--color-surface-sunken);
  accent-color: var(--color-brand);
  cursor: pointer;
}

input[type="checkbox"],
input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-brand);
  cursor: pointer;
}

.form-grid {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.form-grid.two { grid-template-columns: repeat(2, 1fr); }

.setting-range {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: 12px;
  color: var(--color-muted);
}

.setting-range b {
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
}

.inline-check {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 12px;
  color: var(--color-muted);
  white-space: nowrap;
}

.hidden-file {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

/* ── 13.5 输入框右键菜单（WebView2 系统菜单被禁用，前端自绘） ── */
input,
textarea {
  -webkit-user-select: text;
  user-select: text;
}

.input-context-menu {
  position: fixed;
  z-index: 10000;
  min-width: 132px;
  display: flex;
  flex-direction: column;
  padding: var(--space-1, 4px);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md, 0 10px 28px rgba(15, 23, 42, 0.18));
}

.input-context-menu button {
  display: block;
  width: 100%;
  padding: 7px 12px;
  border: 0;
  border-radius: var(--radius-sm, 6px);
  background: transparent;
  color: var(--color-text);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.input-context-menu button:hover:not(:disabled) {
  background: var(--color-surface-soft);
}

.input-context-menu button:disabled {
  color: var(--color-faint, var(--color-muted));
  cursor: default;
}

/* ── 14. Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  transition: background var(--duration-fast), border-color var(--duration-fast), color var(--duration-fast), box-shadow var(--duration-fast);
}

.btn:hover:not(:disabled) {
  background: var(--color-surface-soft);
  border-color: var(--color-line-strong);
}

.btn.primary {
  background: var(--gradient-brand);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-brand);
}

/* .btn:hover 特异性(0,3,0)高于 .btn.primary(0,2,0)，必须在 hover 态重申背景，
   否则渐变被 surface-soft 覆盖，白字贴浅底不可见 */
.btn.primary:hover:not(:disabled) {
  background: var(--gradient-brand);
  border-color: transparent;
  filter: brightness(1.06);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.38);
}

.btn.ghost {
  background: var(--color-surface-soft);
  border-color: var(--color-line);
  color: var(--color-text);
}

.btn.ghost:hover:not(:disabled) {
  background: var(--color-surface);
  border-color: var(--color-line-strong);
  color: var(--color-text);
}

.btn.block { width: 100%; }

.btn.danger,
.btn.primary.danger {
  background: var(--color-danger);
  border-color: var(--color-danger);
  color: #fff;
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.25);
}

.btn.danger:hover:not(:disabled),
.btn.primary.danger:hover:not(:disabled) {
  background: var(--color-danger);
  border-color: var(--color-danger);
  filter: brightness(1.06);
}

.btn.is-disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}

/* 手机传素材：高亮入口按钮，暖色渐变 + 发光 + 呼吸动画，刻意区别于品牌紫主按钮 */
.btn.mobile-upload {
  position: relative;
  background: linear-gradient(135deg, #ff8a00 0%, #ff5e62 50%, #ff2e9a 100%);
  border-color: transparent;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.3px;
  box-shadow: 0 4px 16px rgba(255, 94, 98, 0.45);
}

/* 呼吸光环改用伪元素 transform/opacity（合成层动画）：
   原 box-shadow + background-position 逐帧动画会让按钮区域 2.2s 周期持续重绘 */
.btn.mobile-upload::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  border: 3px solid rgba(255, 94, 98, 0.55);
  opacity: 0;
  pointer-events: none;
  animation: mobileUploadPulse 2.2s ease-in-out infinite;
}

.btn.mobile-upload:hover:not(:disabled) {
  background: linear-gradient(135deg, #ff8a00 0%, #ff5e62 50%, #ff2e9a 100%);
  border-color: transparent;
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(255, 94, 98, 0.55);
}

.btn.mobile-upload:hover:not(:disabled)::after {
  animation: none;
  opacity: 0;
}

.btn.mobile-upload .mobile-upload-icon {
  font-size: 15px;
  line-height: 1;
}

@keyframes mobileUploadPulse {
  0% {
    transform: scale(0.97);
    opacity: 0.75;
  }
  70% {
    transform: scale(1.12);
    opacity: 0;
  }
  100% {
    transform: scale(1.12);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .btn.mobile-upload::after {
    animation: none;
    opacity: 0;
  }
}

.mini-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--duration-fast), border-color var(--duration-fast);
}

.mini-btn:hover {
  background: var(--color-surface-soft);
  border-color: var(--color-line-strong);
}

.mini-btn.listen-btn {
  border-color: rgba(8, 145, 178, 0.3);
  color: var(--color-cyan-dark);
}

.mini-btn.listen-btn:hover,
.mini-btn.listen-btn.active {
  background: var(--color-cyan-soft);
  border-color: var(--color-cyan);
}

.mini-btn.danger {
  color: var(--color-danger);
  border-color: rgba(220, 38, 38, 0.25);
}

.mini-btn.danger:hover {
  background: var(--color-danger-soft);
  border-color: var(--color-danger);
}

/* 异步操作按钮加载态：点击后自动出现转圈，完成或报错后自动恢复 */
button.is-loading {
  opacity: 0.75;
  cursor: progress;
  pointer-events: none;
}

button.is-loading::after {
  content: "";
  display: inline-block;
  width: 13px;
  height: 13px;
  margin-left: var(--space-2);
  flex-shrink: 0;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-muted);
}

.icon-btn.danger {
  color: var(--color-danger);
  border-color: rgba(220, 38, 38, 0.25);
}

.icon-btn.danger:hover:not(:disabled) {
  background: var(--color-danger-soft);
}

.icon-close {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
}

.icon-close:hover {
  background: var(--color-surface-soft);
  color: var(--color-text);
}

/* ── 15. Empty & Blank States ─────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-4);
  min-height: 360px;
  padding: var(--space-12);
}

.empty-symbol {
  display: grid;
  place-items: center;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-xl);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-line);
  opacity: 0.7;
}

.empty-state h2 {
  font-size: 20px;
  font-weight: 700;
}

.empty-state p {
  color: var(--color-muted);
  max-width: 400px;
}

.blank-box {
  padding: var(--space-6);
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-soft);
  color: var(--color-muted);
  font-size: 13px;
  text-align: center;
}