/* ============================================
   AI 工业化 - 视频生成工作台 样式
   即梦风格 · 深色主题
   ============================================ */

:root {
  --bg-primary: #0a0a0f;
  --bg-card: #1a1a2e;
  --bg-card-hover: #22223a;
  --bg-input: #12121f;
  --border-card: rgba(124, 58, 237, 0.2);
  --border-active: rgba(124, 58, 237, 0.5);
  --purple: #7C3AED;
  --purple-light: #8B5CF6;
  --purple-dark: #5B21B6;
  --cyan: #1DB954;
  --cyan-light: #34D96B;
  --gradient-main: linear-gradient(135deg, #7C3AED, #1DB954);
  --gradient-hover: linear-gradient(135deg, #8B5CF6, #34D96B);
  --text-primary: #f0f0f5;
  --text-secondary: #9494b8;
  --text-muted: #6b6b8a;
  --glow-purple: rgba(124, 58, 237, 0.3);
  --glow-cyan: rgba(29, 185, 84, 0.3);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Global Reset ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Noto Sans SC', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---- Animated Background ---- */
.page-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.page-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  animation: orbFloat 12s ease-in-out infinite;
}

.page-bg .orb:nth-child(1) {
  width: 400px;
  height: 400px;
  background: var(--purple);
  top: -10%;
  left: -5%;
  animation-delay: 0s;
}

.page-bg .orb:nth-child(2) {
  width: 350px;
  height: 350px;
  background: var(--cyan);
  bottom: -8%;
  right: -5%;
  animation-delay: -4s;
}

.page-bg .orb:nth-child(3) {
  width: 300px;
  height: 300px;
  background: var(--purple);
  top: 40%;
  left: 50%;
  animation-delay: -8s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.1); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(15px, -10px) scale(1.05); }
}

/* ---- Glassmorphism Utility ---- */
.glass {
  background: rgba(26, 26, 46, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
}

/* ---- Navigation ---- */
.glass-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(124, 58, 237, 0.15);
}

.nav-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-brand .logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-main);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: bold;
}

.nav-brand .brand-highlight {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: rgba(124, 58, 237, 0.1);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Page Layout ---- */
.page-wrapper {
  position: relative;
  z-index: 1;
  padding-top: 80px;
  padding-bottom: 40px;
  max-width: 1440px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.page-header {
  text-align: center;
  margin-bottom: 32px;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 14px;
}

/* ---- Workbench Layout ---- */
.workbench {
  display: grid;
  grid-template-columns: 240px 1fr 340px;
  gap: 20px;
  min-height: calc(100vh - 200px);
}

/* ---- Left Panel (模式选择) ---- */
.left-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  height: fit-content;
}

.mode-tabs {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 24px;
}

.mode-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
  width: 100%;
}

.mode-tab .tab-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.mode-tab:hover {
  background: rgba(124, 58, 237, 0.08);
  color: var(--text-primary);
}

.mode-tab.active {
  background: rgba(124, 58, 237, 0.12);
  border-color: var(--border-active);
  color: var(--purple-light);
}

.mode-tab.active .tab-icon {
  color: var(--purple-light);
}

.panel-section {
  margin-bottom: 20px;
}

.panel-section:last-child {
  margin-bottom: 0;
}

.panel-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

/* ---- Resolution / Duration / Style / Speed Options ---- */
.option-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.option-btn {
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  font-weight: 500;
}

.option-btn:hover {
  border-color: rgba(124, 58, 237, 0.3);
  color: var(--text-primary);
}

.option-btn.active {
  border-color: var(--purple);
  background: rgba(124, 58, 237, 0.15);
  color: var(--purple-light);
}

/* Style options need a full-width grid */
.option-grid.style-grid {
  grid-template-columns: 1fr 1fr 1fr;
}

/* Speed options */
.option-grid.speed-grid {
  grid-template-columns: 1fr;
}

.speed-slider {
  display: flex;
  align-items: center;
  gap: 10px;
}

.speed-slider .slider-track {
  flex: 1;
  height: 4px;
  background: var(--bg-input);
  border-radius: 2px;
  position: relative;
  cursor: pointer;
}

.speed-slider .slider-track .slider-fill {
  height: 100%;
  background: var(--gradient-main);
  border-radius: 2px;
  width: 50%;
  transition: width 0.3s;
}

.speed-slider input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 4px;
  background: var(--bg-input);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.speed-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--gradient-main);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 10px var(--glow-purple);
}

/* ---- Toggle Switch ---- */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}

.toggle-label {
  font-size: 13px;
  color: var(--text-primary);
}

.toggle-switch {
  position: relative;
  width: 40px;
  height: 22px;
  cursor: pointer;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-input);
  border-radius: 11px;
  transition: var(--transition);
  border: 1px solid rgba(124, 58, 237, 0.15);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 2px;
  top: 2px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: var(--transition);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--purple);
  border-color: var(--purple);
}

.toggle-switch input:checked + .toggle-slider::before {
  background: #fff;
  transform: translateX(18px);
}

/* ---- Negative Prompt Input ---- */
.negative-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid rgba(124, 58, 237, 0.15);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  resize: vertical;
  min-height: 60px;
  transition: var(--transition);
  outline: none;
  font-family: inherit;
}

.negative-input:focus {
  border-color: var(--purple);
  box-shadow: 0 0 12px var(--glow-purple);
}

.negative-input::placeholder {
  color: var(--text-muted);
}

/* ---- Center Panel (工作区) ---- */
.center-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.work-area {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

/* Text input mode */
.prompt-textarea {
  flex: 1;
  width: 100%;
  min-height: 180px;
  padding: 16px;
  background: var(--bg-input);
  border: 1px solid rgba(124, 58, 237, 0.15);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 15px;
  resize: vertical;
  outline: none;
  transition: var(--transition);
  font-family: inherit;
  line-height: 1.6;
}

.prompt-textarea:focus {
  border-color: var(--purple);
  box-shadow: 0 0 16px var(--glow-purple);
}

.prompt-textarea::placeholder {
  color: var(--text-muted);
  font-size: 14px;
}

/* Image upload area */
.upload-area {
  border: 2px dashed rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-md);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  background: rgba(124, 58, 237, 0.03);
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--purple);
  background: rgba(124, 58, 237, 0.08);
  box-shadow: 0 0 20px var(--glow-purple);
}

.upload-area .upload-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.6;
}

.upload-area .upload-text {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.upload-area .upload-hint {
  font-size: 12px;
  color: var(--text-muted);
}

.upload-area .preview-image {
  max-width: 100%;
  max-height: 200px;
  border-radius: var(--radius-sm);
  display: none;
  margin: 0 auto;
}

.upload-area.has-image {
  border-style: solid;
}

.upload-area.has-image .preview-image {
  display: block;
}

.upload-area.has-image .upload-icon,
.upload-area.has-image .upload-text,
.upload-area.has-image .upload-hint {
  display: none;
}

.upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* Frame upload grid (首尾帧模式) */
.frame-upload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.frame-upload-box {
  text-align: center;
}

.frame-upload-box .upload-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: block;
  font-weight: 500;
}

/* Prompt input below upload area */
.prompt-below-input {
  margin-top: 16px;
}

/* ---- Generate Button ---- */
.generate-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 24px;
  background: var(--gradient-main);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 20px;
  position: relative;
  overflow: hidden;
}

.generate-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hover);
  opacity: 0;
  transition: var(--transition);
}

.generate-btn:hover::before {
  opacity: 1;
}

.generate-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--glow-purple);
}

.generate-btn:active {
  transform: translateY(0);
}

.generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.generate-btn span, 
.generate-btn svg {
  position: relative;
  z-index: 1;
}

.generate-btn .btn-icon {
  font-size: 20px;
}

/* ---- Right Panel (预览区) ---- */
.right-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  height: fit-content;
}

.preview-section-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-container {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Placeholder animation */
.preview-placeholder {
  text-align: center;
  color: var(--text-muted);
}

.preview-placeholder .placeholder-icon {
  font-size: 48px;
  margin-bottom: 12px;
  animation: pulse 2s ease-in-out infinite;
}

.preview-placeholder .placeholder-text {
  font-size: 13px;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

/* Generating animation */
.preview-container.generating::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    transparent 0%, 
    rgba(124, 58, 237, 0.05) 50%, 
    transparent 100%
  );
  background-size: 200% 200%;
  animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Status bar */
.status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  font-size: 13px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.waiting {
  background: #6b6b8a;
}

.status-dot.processing {
  background: var(--purple);
  animation: blink 1s ease-in-out infinite;
}

.status-dot.completed {
  background: var(--cyan);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Action buttons */
.preview-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.action-btn.primary {
  background: var(--gradient-main);
  color: white;
}

.action-btn.primary:hover {
  box-shadow: 0 4px 16px var(--glow-purple);
  transform: translateY(-1px);
}

.action-btn.secondary {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid rgba(124, 58, 237, 0.15);
}

.action-btn.secondary:hover {
  border-color: var(--purple);
  color: var(--text-primary);
}

.action-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

/* ---- History Section ---- */
.history-section {
  margin-top: 20px;
}

.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.history-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.history-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: rgba(124, 58, 237, 0.3) transparent;
}

.history-scroll::-webkit-scrollbar {
  height: 4px;
}

.history-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.history-scroll::-webkit-scrollbar-thumb {
  background: rgba(124, 58, 237, 0.3);
  border-radius: 4px;
}

.history-item {
  flex-shrink: 0;
  width: 140px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-input);
  border: 1px solid rgba(124, 58, 237, 0.1);
  cursor: pointer;
  transition: var(--transition);
}

.history-item:hover {
  border-color: var(--purple);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--glow-purple);
}

.history-item .history-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--bg-input), rgba(124, 58, 237, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 24px;
}

.history-item .history-meta {
  padding: 8px 10px;
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ---- Responsive ---- */
@media (max-width: 1200px) {
  .workbench {
    grid-template-columns: 220px 1fr 300px;
  }
}

@media (max-width: 992px) {
  .workbench {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .left-panel {
    position: sticky;
    top: 80px;
    z-index: 10;
  }

  .mode-tabs {
    flex-direction: row;
    overflow-x: auto;
  }

  .mode-tab {
    white-space: nowrap;
    flex-shrink: 0;
  }

  .option-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid rgba(124, 58, 237, 0.15);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .page-wrapper {
    padding-left: 16px;
    padding-right: 16px;
  }

  .workbench {
    grid-template-columns: 1fr;
  }

  .option-grid {
    grid-template-columns: 1fr 1fr;
  }

  .option-grid.style-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .frame-upload-grid {
    grid-template-columns: 1fr;
  }

  .right-panel {
    order: -1;
  }
}

@media (max-width: 480px) {
  .option-grid.style-grid {
    grid-template-columns: 1fr 1fr;
  }

  .preview-actions {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   多参模式 - Input模式切换（基本模式/多参模式）
   ============================================ */

.input-mode-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 16px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.input-mode-tab {
  flex: 1;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  transition: var(--transition);
  text-align: center;
}

.input-mode-tab:hover {
  color: var(--text-secondary);
}

.input-mode-tab.active {
  background: rgba(124, 58, 237, 0.2);
  color: var(--purple-light);
}

/* ---- 多参模式上传区 ---- */
.multi-ref-section {
  margin-bottom: 16px;
}

.multi-ref-section:last-of-type {
  margin-bottom: 0;
}

.multi-ref-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.multi-ref-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.multi-ref-count {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
}

.multi-upload-area {
  border: 2px dashed rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  background: rgba(124, 58, 237, 0.03);
}

.multi-upload-area:hover,
.multi-upload-area.drag-over {
  border-color: var(--purple);
  background: rgba(124, 58, 237, 0.08);
  box-shadow: 0 0 16px var(--glow-purple);
}

.multi-upload-area .upload-icon-small {
  font-size: 24px;
  opacity: 0.5;
  margin-bottom: 4px;
}

.multi-upload-area .upload-text-small {
  font-size: 12px;
  color: var(--text-muted);
}

.multi-upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* 文件列表 */
.multi-ref-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
  min-height: 0;
}

.multi-ref-item {
  position: relative;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid rgba(124, 58, 237, 0.15);
  overflow: hidden;
  transition: var(--transition);
}

.multi-ref-item:hover {
  border-color: var(--border-active);
}

/* 图片预览 */
.multi-ref-item.image-item {
  width: 80px;
  height: 80px;
}

.multi-ref-item.image-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 文件名称显示 */
.multi-ref-item.file-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  max-width: 180px;
}

.multi-ref-item.file-item .file-icon {
  font-size: 16px;
  flex-shrink: 0;
}

.multi-ref-item.file-item .file-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* 删除按钮 */
.multi-ref-delete {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.9);
  border: 2px solid var(--bg-card);
  color: white;
  font-size: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  z-index: 2;
  line-height: 1;
}

.multi-ref-item:hover .multi-ref-delete {
  opacity: 1;
}

@media (max-width: 600px) {
  .multi-ref-item.image-item {
    width: 64px;
    height: 64px;
  }
}

/* ---- Hide mode content ---- */
.mode-content {
  display: none;
}

.mode-content.active {
  display: flex;
  flex-direction: column;
}