/* ============================================
   生图 / 换图 弹窗（通用模块 imageGenModalUI）
   忠实翻译 Claude Design「换图片弹窗模块」。全 token、四主题自适配。
   结果框比例由 --imggen-aspect 驱动（portrait 9/16 默认 / landscape 16/9 / square 1/1）。
   ============================================ */

.imggen-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  background: var(--overlay-50);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

.imggen-modal {
  position: relative;
  width: 100%;
  max-width: 420px;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  background: var(--surface-elevated);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: imggen-pop .28s cubic-bezier(.2, .9, .3, 1.05);
}

@keyframes imggen-pop {
  from { opacity: 0; transform: translateY(10px) scale(.99); }
  to   { opacity: 1; transform: none; }
}

.imggen-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-soft);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  text-align: center;
}

.imggen-body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: var(--space-md);
}

.imggen-section { margin-bottom: var(--space-lg); }
.imggen-section:last-child { margin-bottom: 0; }

.imggen-section-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: .03em;
  margin-bottom: var(--space-sm);
}

/* ---- 当前图片 ---- */
.imggen-current {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}
.imggen-current-thumb {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  flex: 0 0 auto;
  object-fit: cover;
  background: var(--surface-canvas);
}
.imggen-current-text { min-width: 0; }
.imggen-current-title { font-size: 14px; font-weight: 500; color: var(--text-main); }
.imggen-current-sub { font-size: 12.5px; color: var(--text-soft); margin-top: 3px; line-height: 1.5; }

/* ---- prompt ---- */
.imggen-prompt-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
  min-height: 30px;
}
.imggen-ai-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-accent);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--brand-accent) 40%, transparent);
  background: color-mix(in srgb, var(--brand-accent) 8%, var(--surface-elevated));
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-base), border-color var(--transition-base);
}
.imggen-ai-btn:hover {
  background: color-mix(in srgb, var(--brand-accent) 16%, var(--surface-elevated));
  border-color: var(--brand-accent);
}
.imggen-ai-btn[disabled] { opacity: .7; cursor: default; }

.imggen-spin {
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--brand-accent) 28%, transparent);
  border-top-color: var(--brand-accent);
  animation: imggen-spin .7s linear infinite;
  width: 13px;
  height: 13px;
}
@keyframes imggen-spin { to { transform: rotate(360deg); } }

.imggen-textarea {
  width: 100%;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  font: inherit;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-main);
  background: var(--surface-elevated);
  resize: none;
  min-height: 104px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.imggen-textarea:focus {
  outline: none;
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-accent) 18%, transparent);
}

.imggen-prompt-count {
  margin-top: 4px;
  text-align: right;
  font-size: 12px;
  color: var(--text-soft);
}
.imggen-prompt-count.is-low { color: var(--status-warning); }

/* ---- 分辨率 ---- */
.imggen-res-track {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--surface-soft);
  border-radius: var(--radius-md);
}
.imggen-res-opt {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 50px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  color: var(--text-soft);
  transition: background var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
}
.imggen-res-opt.is-active {
  background: var(--surface-elevated);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}
.imggen-res-label { font-size: 15px; font-weight: 700; line-height: 1; }
.imggen-res-sub { font-size: 10.5px; margin-top: 4px; font-weight: 600; opacity: .62; }

/* ---- 生成结果 ---- */
.imggen-result-frame {
  width: 100%;
  max-width: 228px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.imggen-result-empty {
  aspect-ratio: var(--imggen-aspect, 9 / 16);
  border: 1px dashed var(--border-medium);
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--text-soft);
}
.imggen-empty-icon { font-size: 40px; opacity: .5; }
.imggen-empty-text { font-size: 13.5px; }

.imggen-result-busy {
  aspect-ratio: var(--imggen-aspect, 9 / 16);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--text-soft);
  font-size: 13.5px;
  font-weight: 500;
  background: linear-gradient(100deg, var(--surface-soft) 28%, var(--surface-canvas) 50%, var(--surface-soft) 72%);
  background-size: 200% 100%;
  animation: imggen-shimmer 1.5s linear infinite;
}
@keyframes imggen-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.imggen-spin-lg {
  width: 30px;
  height: 30px;
  border-width: 3px;
  border-color: color-mix(in srgb, var(--text-soft) 30%, transparent);
  border-top-color: var(--text-soft);
}

.imggen-result-img-wrap {
  position: relative;
  aspect-ratio: var(--imggen-aspect, 9 / 16);
  box-shadow: inset 0 0 0 1px var(--border-soft);
  animation: imggen-fade .4s ease;
}
@keyframes imggen-fade { from { opacity: 0; } to { opacity: 1; } }
.imggen-result-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.imggen-download {
  position: absolute;
  left: 10px;
  bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border-radius: var(--radius-md);
  background: var(--overlay-50);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  cursor: pointer;
  user-select: none;
  color: var(--text-invert);
  font-size: 12px;
  font-weight: 600;
}
.imggen-download:hover { background: var(--overlay-60); }
.imggen-download .material-symbols-outlined { font-size: 16px; }

.imggen-reroll {
  margin-top: 13px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: 48px;
  padding: 8px 12px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  cursor: pointer;
  user-select: none;
  color: var(--text-main);
  transition: background var(--transition-base);
}
.imggen-reroll-main {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  font-size: 15px;
  font-weight: 600;
}
.imggen-reroll-hint {
  font-size: 11.5px;
  font-weight: 400;
  color: var(--text-soft);
  line-height: 1.3;
  text-align: center;
}
.imggen-reroll:hover { background: var(--surface-soft); }
.imggen-reroll[disabled] { cursor: not-allowed; color: var(--text-soft); background: var(--surface-soft); }
.imggen-reroll-cost {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-accent);
}
.imggen-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--border-medium); }

/* ---- 沙粒不足 ---- */
.imggen-insufficient {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--status-warning) 12%, var(--surface-elevated));
  border: 1px solid color-mix(in srgb, var(--status-warning) 35%, transparent);
}
.imggen-insufficient .material-symbols-outlined { color: var(--status-warning); flex: 0 0 auto; }
.imggen-insufficient-text { min-width: 0; flex: 1 1 auto; }
.imggen-insufficient-title { font-size: 13.5px; font-weight: 600; color: var(--status-warning); }
.imggen-insufficient-body { font-size: 12.5px; color: var(--text-soft); margin-top: 3px; line-height: 1.55; }
.imggen-insufficient-cta {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-accent);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}

/* ---- 生成错误（内容审查 / 服务状态 / key 失效 …，完整原文）---- */
.imggen-error {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--status-danger) 10%, var(--surface-elevated));
  border: 1px solid color-mix(in srgb, var(--status-danger) 35%, transparent);
}
.imggen-error .material-symbols-outlined { color: var(--status-danger); flex: 0 0 auto; }
.imggen-error-text { min-width: 0; flex: 1 1 auto; }
.imggen-error-title { font-size: 13.5px; font-weight: 600; color: var(--status-danger); }
.imggen-error-body {
  font-size: 12.5px;
  color: var(--text-soft);
  margin-top: 3px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---- footer ---- */
.imggen-footer {
  flex: 0 0 auto;
  display: flex;
  gap: var(--space-sm);
  border-top: 1px solid var(--border-soft);
  padding: var(--space-sm) var(--space-md);
  background: var(--surface-elevated);
}
.imggen-cancel { flex: 0 0 auto; min-width: 96px; }
.imggen-primary { flex: 1 1 auto; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.imggen-primary .material-symbols-outlined { font-size: 18px; }

/* ---- 成功覆盖层 ---- */
.imggen-saved {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  text-align: center;
  background: color-mix(in srgb, var(--surface-elevated) 90%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.imggen-saved-circle {
  width: 74px;
  height: 74px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-invert);
  background: var(--brand-accent);
  box-shadow: 0 14px 34px -10px color-mix(in srgb, var(--brand-accent) 60%, transparent);
  animation: imggen-pop-circle .45s cubic-bezier(.2, .9, .3, 1.2);
}
.imggen-saved-circle .material-symbols-outlined { font-size: 38px; }
@keyframes imggen-pop-circle {
  0%   { transform: scale(.7); opacity: 0; }
  60%  { transform: scale(1.06); }
  100% { transform: scale(1); opacity: 1; }
}
.imggen-saved-title { font-size: 19px; font-weight: 600; color: var(--text-main); margin-top: var(--space-md); }
.imggen-saved-sub { font-size: 14px; color: var(--text-soft); margin-top: var(--space-sm); line-height: 1.6; }
.imggen-saved-cost { color: var(--brand-accent); font-weight: 700; }

/* 容器查询：窄 pane（手机/侧栏）下让弹窗更贴边 */
@container stage (max-width: 480px) {
  .imggen-modal { max-width: 100%; }
}

/* 主按钮内联的加载转圈（覆盖基底 .imggen-spin 的尺寸/描边为反色）*/
.imggen-spin--on-primary {
  width: 16px;
  height: 16px;
  border-color: color-mix(in srgb, var(--text-invert) 35%, transparent);
  border-top-color: var(--text-invert);
}
/* 生成按钮里的沙粒消耗小字 */
.imggen-gen-cost {
  opacity: 0.82;
  font-size: 13px;
  font-weight: 600;
}