/* ============================================================
   叮当猫的口袋 - PDF 工具 公共样式
   ============================================================ */

/* 隐藏未初始化的 Alpine.js 元素 */
[x-cloak] { display: none !important; }

/* 全局字体 */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ============================================================
   动画
   ============================================================ */

/* 卡片浮入 */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.card-animate {
  opacity: 0;
  animation: fade-up 0.5s ease-out forwards;
}
.card-animate:nth-child(2) { animation-delay: 0.08s; }
.card-animate:nth-child(3) { animation-delay: 0.16s; }
.card-animate:nth-child(4) { animation-delay: 0.24s; }
.card-animate:nth-child(5) { animation-delay: 0.32s; }
.card-animate:nth-child(6) { animation-delay: 0.40s; }
.card-animate:nth-child(7) { animation-delay: 0.48s; }
.card-animate:nth-child(8) { animation-delay: 0.56s; }
.card-animate:nth-child(9) { animation-delay: 0.64s; }
.card-animate:nth-child(10) { animation-delay: 0.72s; }

/* 脉冲呼吸 */
@keyframes pulse-soft {
  0%, 100% { opacity: 0.5; }
  50%      { opacity: 1; }
}
.pulse-soft {
  animation: pulse-soft 3s ease-in-out infinite;
}

/* 旋转加载 */
@keyframes spin {
  to { transform: rotate(360deg); }
}
.animate-spin {
  animation: spin 1s linear infinite;
}

/* ============================================================
   工具卡片
   ============================================================ */
.tool-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -12px rgba(59, 130, 246, 0.25);
}
.tool-card:hover .card-icon {
  transform: scale(1.1) rotate(-3deg);
}
.card-icon {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   背景点阵
   ============================================================ */
.dot-grid {
  background-image: radial-gradient(circle, rgba(59,130,246,0.15) 1px, transparent 1px);
  background-size: 32px 32px;
}
.dark .dot-grid {
  background-image: radial-gradient(circle, rgba(59,130,246,0.08) 1px, transparent 1px);
}

/* ============================================================
   滚动渐显
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: all 0.6s ease-out;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   文件上传区域
   ============================================================ */
.upload-zone {
  border: 2px dashed #d1d5db;
  transition: all 0.3s ease;
}
.upload-zone:hover,
.upload-zone.drag-over {
  border-color: #3b82f6;
  background-color: rgba(59, 130, 246, 0.05);
}
.dark .upload-zone {
  border-color: #4b5563;
}
.dark .upload-zone:hover,
.dark .upload-zone.drag-over {
  border-color: #60a5fa;
  background-color: rgba(96, 165, 250, 0.08);
}

/* ============================================================
   文件列表
   ============================================================ */
.file-item {
  transition: all 0.2s ease;
}
.file-item:hover {
  background-color: rgba(59, 130, 246, 0.05);
}
.dark .file-item:hover {
  background-color: rgba(96, 165, 250, 0.08);
}

/* ============================================================
   处理进度
   ============================================================ */
.progress-bar {
  transition: width 0.3s ease;
}

/* ============================================================
   按钮
   ============================================================ */
.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  transition: all 0.3s ease;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #2563eb, #4f46e5);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}