/**
 * 证件照压缩宝 - 毛玻璃风格样式表
 * Glassmorphism edition — 匹配琉璃工具集设计系统
 */

/* ===== CSS 变量定义 ===== */
:root {
  /* 玻璃令牌 */
  --glass-bg: rgba(255, 255, 255, 0.5);
  --glass-bg-hover: rgba(255, 255, 255, 0.75);
  --glass-bg-card: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(200, 200, 220, 0.5);
  --glass-border-hover: rgba(180, 180, 210, 0.7);
  --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.06);
  --glass-shadow-hover: 0 16px 48px rgba(31, 38, 135, 0.12);
  --glass-shadow-lg: 0 20px 60px rgba(31, 38, 135, 0.1);
  --glass-blur: blur(24px) saturate(180%);
  --glass-blur-light: blur(12px) saturate(150%);

  /* 品牌色 */
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-glow: #818cf8;
  --primary-bg: rgba(99, 102, 241, 0.15);
  --accent: #f472b6;
  --success-color: #10b981;
  --success-glow: #34d399;
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning-color: #f59e0b;

  /* 文字 */
  --text-primary: #1e1b4b;
  --text-secondary: #4c4a6e;
  --text-muted: #8b8aa0;
  --text-error: #dc2626;

  /* 边框与背景 */
  --border-color: rgba(180, 180, 200, 0.3);
  --bg-color: rgba(255, 255, 255, 0.3);

  /* 圆角 */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 28px;
  --radius-full: 9999px;
}

/* 暗色模式 */
@media (prefers-color-scheme: dark) {
  :root {
    --glass-bg: rgba(30, 30, 60, 0.5);
    --glass-bg-hover: rgba(30, 30, 60, 0.7);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-hover: rgba(255, 255, 255, 0.2);
    --text-primary: #e8e8f0;
    --text-secondary: #b0b0c8;
    --text-muted: #7c7aa0;
  }
}

/* ===== 动画关键帧 ===== */
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  25%  { background-position: 100% 0%; }
  50%  { background-position: 100% 100%; }
  75%  { background-position: 0% 100%; }
  100% { background-position: 0% 50%; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 16px rgba(99, 102, 241, 0.25); }
  50%      { box-shadow: 0 0 32px rgba(99, 102, 241, 0.5); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'WenQuanYi Micro Hei', sans-serif;
  background: linear-gradient(135deg, #e0e7ff, #ede9fe, #fce7f3, #ede9fe, #e0e7ff);
  background-size: 400% 400%;
  animation: gradientShift 20s ease infinite;
  min-height: 100vh;
  color: var(--text-primary);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

/* ===== 返回导航按钮 ===== */
.back-home {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 9000;
  padding: 8px 18px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  transition: all 0.35s ease;
  font-weight: 500;
}
.back-home:hover {
  background: var(--glass-bg-hover);
  color: #fff;
  border-color: var(--glass-border-hover);
}

/* ===== 用户协议弹窗 ===== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
  opacity: 1;
  transition: opacity 0.5s ease;
}
.modal-overlay.fade-out {
  opacity: 0;
  pointer-events: none;
}
.modal-overlay.hidden {
  display: none;
}

.modal-content {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  max-width: 560px;
  width: 100%;
  max-height: 80vh;
  overflow: hidden;
  box-shadow: var(--glass-shadow-lg);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 20px 24px;
  background: linear-gradient(135deg, rgba(99,102,241,0.6), rgba(139,92,246,0.5));
  backdrop-filter: blur(8px);
  color: white;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}
.modal-body p {
  margin-bottom: 12px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}
.modal-body ul { margin: 12px 0; padding-left: 20px; }
.modal-body li {
  margin-bottom: 10px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.modal-body li strong { color: var(--text-primary); }
.modal-body .warning-text {
  margin-top: 20px;
  padding: 12px;
  background: rgba(251,191,36,0.15);
  border: 1px solid rgba(251,191,36,0.3);
  border-radius: var(--radius-sm);
  color: #fde68a;
  font-weight: 500;
  text-align: center;
}

.modal-footer {
  padding: 16px 24px 24px;
  text-align: center;
}

.agree-btn {
  width: 100%;
  padding: 14px 24px;
  background: rgba(52,211,153,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: white;
  border: 1px solid rgba(52,211,153,0.35);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}
.agree-btn:hover {
  background: rgba(52,211,153,0.9);
  box-shadow: 0 0 24px rgba(52,211,153,0.4);
  transform: translateY(-1px);
}

/* ===== 容器布局 ===== */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 头部区域 ===== */
.header {
  text-align: center;
  margin-bottom: 32px;
}
.title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}
.subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.subtitle::before,
.subtitle::after {
  content: '';
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

/* ===== 上传区域 ===== */
.upload-section { margin-bottom: 24px; }

.drop-zone {
  background: var(--glass-bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 48px 24px;
  text-align: center;
  transition: all 0.4s ease;
  cursor: pointer;
  box-shadow: var(--glass-shadow);
}
.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--primary-glow);
  background: rgba(99,102,241,0.2);
  box-shadow: 0 0 32px rgba(99,102,241,0.3);
}

.upload-icon { width: 64px; height: 64px; color: var(--text-muted); margin-bottom: 16px; }
.drop-text {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.drop-hint { color: var(--text-muted); font-size: 0.875rem; margin-bottom: 16px; }

.select-btn {
  display: inline-block;
  background: rgba(99,102,241,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: white;
  padding: 12px 32px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 500;
  border: 1px solid rgba(129,140,248,0.35);
  cursor: pointer;
  transition: all 0.3s ease;
}
.select-btn:hover {
  background: rgba(99,102,241,0.9);
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(99,102,241,0.45);
}
.select-btn:active { transform: translateY(0) scale(0.97); }

.format-hint { margin-top: 16px; font-size: 0.875rem; color: var(--text-muted); }

/* ===== 统计信息栏 ===== */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
  padding: 12px 24px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  box-shadow: var(--glass-shadow);
}
.stats-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.stats-item em { font-style: normal; color: var(--primary-glow); font-weight: 600; }
.stats-icon { width: 18px; height: 18px; color: var(--text-muted); }

/* ===== 压缩控制区 ===== */
.control-section {
  background: var(--glass-bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: var(--glass-shadow);
}
.control-section.hidden { display: none; }

/* ===== 图片对比区域 ===== */
.compare-container { margin-bottom: 24px; }
.compare-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 16px;
}
.compare-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}
.compare-item { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.compare-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 4px 16px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
}
.compare-compressed .compare-label {
  background: var(--primary-bg);
  color: var(--primary-glow);
  border-color: rgba(99,102,241,0.3);
}
.compare-image-box {
  width: 200px; height: 200px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 2px solid var(--glass-border);
  backdrop-filter: blur(8px);
  padding: 8px;
}
.compare-compressed .compare-image-box { border-color: rgba(99,102,241,0.4); }
.compare-image { max-width: 100%; max-height: 100%; object-fit: contain; }
.compare-info { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.compare-size { font-size: 0.875rem; font-weight: 600; color: var(--text-primary); }
.compare-kb { font-size: 0.75rem; color: var(--text-secondary); }
.compare-arrow { font-size: 2rem; color: var(--primary-glow); font-weight: 600; }

/* ===== 控制面板 ===== */
.controls { position: relative; }
.control-group { margin-bottom: 24px; }
.control-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.value-badge {
  background: var(--primary-bg);
  border: 1px solid rgba(99,102,241,0.3);
  color: var(--primary-glow);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
}

/* ===== 压缩模式切换 ===== */
.mode-switch { display: flex; gap: 8px; margin-bottom: 8px; }
.mode-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}
.mode-btn:hover {
  border-color: var(--primary-glow);
  color: #fff;
  background: rgba(99,102,241,0.15);
}
.mode-btn.active {
  background: rgba(99,102,241,0.55);
  backdrop-filter: blur(12px);
  border-color: rgba(129,140,248,0.5);
  color: #fff;
  box-shadow: 0 0 16px rgba(99,102,241,0.3);
}
.mode-icon { width: 20px; height: 20px; }
.mode-hint { font-size: 0.8125rem; color: var(--text-muted); margin-top: 4px; }

/* ===== 预估大小 ===== */
.estimated-hint {
  font-size: 0.9375rem;
  color: var(--text-primary);
  margin-top: 12px;
  text-align: center;
  font-weight: 500;
  background: rgba(99,102,241,0.15);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(99,102,241,0.3);
  padding: 10px 16px;
  border-radius: var(--radius-md);
}
.estimated-hint strong { color: var(--primary-glow); font-weight: 700; font-size: 1.125rem; }

/* ===== 尺寸优先模式 ===== */
.preset-hint { font-size: 0.8125rem; color: var(--text-muted); margin-top: 8px; }
.scale-input-group { display: flex; align-items: center; gap: 8px; margin-top: 12px; }
.scale-input-group label { font-size: 0.875rem; color: var(--text-secondary); }

/* ===== 滑动条 ===== */
.slider {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px; height: 24px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 16px rgba(99,102,241,0.5);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 2px solid rgba(255,255,255,0.4);
}
.slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 0 24px rgba(99,102,241,0.7);
}
.slider::-moz-range-thumb {
  width: 24px; height: 24px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid rgba(255,255,255,0.4);
  box-shadow: 0 0 16px rgba(99,102,241,0.5);
}
.slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== 目标大小按钮 ===== */
.hint-text { font-size: 0.875rem; color: var(--text-secondary); font-weight: 400; }
.size-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.size-btn {
  padding: 8px 16px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.25s ease;
}
.size-btn:hover { border-color: var(--primary-glow); color: #fff; }
.size-btn.active {
  background: rgba(99,102,241,0.7);
  border-color: rgba(129,140,248,0.5);
  color: white;
  box-shadow: 0 0 12px rgba(99,102,241,0.3);
}

/* ===== 自定义尺寸面板 ===== */
.custom-size-panel {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  margin-top: 12px;
  padding: 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
}
.custom-size-panel.hidden { display: none; }
.size-input-group { display: flex; flex-direction: column; gap: 4px; }
.size-input-group label { font-size: 0.75rem; color: var(--text-secondary); }
.size-input {
  width: 100px;
  padding: 8px 12px;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.size-input:focus {
  border-color: var(--primary-glow);
  box-shadow: 0 0 16px rgba(99,102,241,0.25);
}
.size-unit { font-size: 0.875rem; color: var(--text-secondary); }
.size-separator { font-size: 1.25rem; color: var(--text-muted); padding-bottom: 8px; }

.apply-btn {
  padding: 8px 16px;
  background: rgba(99,102,241,0.7);
  backdrop-filter: blur(8px);
  color: white;
  border: 1px solid rgba(129,140,248,0.35);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.25s ease;
}
.apply-btn:hover {
  background: rgba(99,102,241,0.9);
  box-shadow: 0 0 16px rgba(99,102,241,0.4);
}

/* ===== 压缩按钮 ===== */
.compress-btn {
  width: 100%;
  padding: 16px 32px;
  background: rgba(99,102,241,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: white;
  border: 1px solid rgba(129,140,248,0.35);
  border-radius: var(--radius-md);
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.35s ease;
}
.compress-btn:hover {
  background: rgba(99,102,241,0.9);
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(99,102,241,0.5);
}
.compress-btn:active { transform: translateY(0) scale(0.98); }
.compress-btn:disabled {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.1);
  color: var(--text-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.btn-icon { width: 20px; height: 20px; }

/* ===== 加载状态 ===== */
.loading-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(30,30,60,0.85);
  backdrop-filter: blur(4px);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: #fff;
}
.loading-overlay.hidden { display: none; }
.spinner {
  width: 48px; height: 48px;
  border: 3px solid rgba(255,255,255,0.15);
  border-top-color: var(--primary-glow);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* ===== 结果信息 ===== */
.result-info {
  margin-top: 24px;
  padding: 20px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
}
.result-info.hidden { display: none; }
.result-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}
.stat-item { text-align: center; }
.stat-label { display: block; font-size: 0.75rem; color: var(--text-muted); margin-bottom: 4px; }
.stat-value { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); }
.stat-value.highlight { color: var(--primary-glow); }
.stat-value.success { color: var(--success-color); }
.stat-arrow { font-size: 1.5rem; color: var(--text-muted); }

/* ===== 下载区域 ===== */
.download-section { margin-top: 24px; text-align: center; }
.download-section.hidden { display: none; }
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 48px;
  background: rgba(52,211,153,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: white;
  border: 1px solid rgba(52,211,153,0.35);
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.35s ease;
}
.download-btn:hover {
  background: rgba(52,211,153,0.9);
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(52,211,153,0.45);
}
.download-hint { margin-top: 12px; font-size: 0.875rem; color: var(--text-secondary); }

/* ===== 页脚 ===== */
.footer {
  margin-top: auto;
  padding-top: 32px;
  text-align: center;
  padding-bottom: 20px;
}
.privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  padding: 16px 28px;
  background: var(--glass-bg-card);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}
.shield-icon { width: 18px; height: 18px; color: var(--success-color); }

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin: 12px 0;
}
.footer-link {
  color: var(--primary-glow);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}
.footer-link:hover { color: #fff; text-decoration: underline; }
.footer-divider { color: var(--text-muted); opacity: 0.5; }
.copyright { color: var(--text-secondary); font-size: 0.8rem; }
.disclaimer { color: var(--text-muted); font-size: 0.75rem; margin-top: 8px; }
.beian { margin-top: 10px; font-size: 0.75rem; color: var(--text-muted); }
.beian a { color: var(--text-muted); text-decoration: none; opacity: 0.7; transition: opacity 0.2s; }
.beian a:hover { opacity: 1; text-decoration: underline; }

/* ===== 联系我们弹窗 ===== */
.contact-modal {
  text-align: center;
  padding: 40px 32px;
  max-width: 400px;
}
.modal-close {
  position: absolute;
  top: 12px; right: 16px;
  background: none;
  border: none;
  font-size: 28px;
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
}
.modal-close:hover { color: #fff; }
.contact-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  background: var(--primary-bg);
  border: 1px solid rgba(99,102,241,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}
.contact-icon svg { width: 32px; height: 32px; color: var(--primary-glow); }
.contact-title { font-size: 1.5rem; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; }
.contact-email { font-size: 1.25rem; color: var(--primary-glow); font-weight: 500; word-break: break-all; margin-bottom: 12px; }
.contact-hint { font-size: 0.875rem; color: var(--text-secondary); }

/* ===== 更新日志弹窗 ===== */
.changelog-modal {
  max-width: 480px;
  max-height: 70vh;
  overflow-y: auto;
  text-align: left;
  padding: 32px;
}
.changelog-title { font-size: 1.25rem; font-weight: 600; color: var(--text-primary); margin-bottom: 24px; text-align: center; }
.changelog-content { font-size: 0.9rem; line-height: 1.6; }
.changelog-version { font-weight: 600; color: var(--primary-glow); margin: 16px 0 8px 0; }
.changelog-date { font-weight: 400; font-size: 0.8rem; color: var(--text-muted); margin-left: 8px; }
.changelog-list { margin: 0; padding-left: 20px; color: var(--text-secondary); }
.changelog-list li { margin: 6px 0; }

/* ===== 隐藏与错误 ===== */
.hidden { display: none !important; }
.error-message {
  padding: 12px 16px;
  background: rgba(220,38,38,0.2);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(220,38,38,0.35);
  color: #fca5a5;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-top: 12px;
  display: none;
}
.error-message.show { display: block; }

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
  .container { padding: 16px 12px; }
  .title { font-size: 1.5rem; }
  .subtitle { font-size: 0.875rem; flex-direction: column; gap: 4px; }
  .subtitle::before, .subtitle::after { display: none; }
  .drop-zone { padding: 32px 16px; }
  .upload-icon { width: 48px; height: 48px; }
  .control-section { padding: 16px; }
  .preview-container { grid-template-columns: 1fr; gap: 16px; }
  .preview-wrapper { min-height: 150px; }
  .preview-image { max-height: 200px; }
  .size-buttons { justify-content: center; }
  .custom-size-panel { flex-wrap: wrap; justify-content: center; }
  .result-stats { flex-direction: column; }
  .stat-arrow { transform: rotate(90deg); }
  .compress-btn, .download-btn { padding: 14px 24px; font-size: 1rem; }
  .privacy-note { font-size: 0.75rem; padding: 10px 16px; }
  .footer-links { gap: 8px; font-size: 0.75rem; }
  .copyright { font-size: 0.7rem; }
  .stats-bar { gap: 16px; padding: 10px 16px; }
}

@media (max-width: 480px) {
  .title { font-size: 1.25rem; }
  .drop-text { font-size: 1rem; }
  .control-label { flex-direction: column; align-items: flex-start; gap: 8px; }
  .value-badge { margin-left: auto; }
  .size-btn { padding: 6px 12px; font-size: 0.8125rem; }
}