/* modern.css - 高度优化的现代浅色 UI 重塑
   仅覆盖视觉，不改变结构/功能/脚本依赖（id/class 保留）
*/

/* 设计系统 */
:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #fbfcff;
  --text: #1f2a37;
  --text-dim: #667085;
  --primary: #3b82f6;       /* 清澈蓝作为主色 */
  --primary-2: #2563eb;
  --accent: #10b981;        /* 清新绿用于成功态 */
  --danger: #ef4444;        /* 红色用于错误态 */
  --warning: #f59e0b;
  --border: #e5e7eb;
  --shadow-1: 0 8px 24px rgba(17, 24, 39, 0.06);
  --shadow-2: 0 18px 48px rgba(17, 24, 39, 0.08);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

/* 全局背景与排版 */
html, body {
  background:
    radial-gradient(1200px 800px at 15% -10%, rgba(59,130,246,0.08), transparent 60%),
    radial-gradient(800px 500px at 85% 0%, rgba(16,185,129,0.08), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1040px !important;
  padding: 28px !important;
}

/* 顶部 */
.header {
  margin-bottom: 28px !important;
}
.logo {
  justify-content: flex-start !important;
  gap: 14px !important;
}
.logo-image {
  width: 56px !important;
  height: 56px !important;
  border-radius: 16px !important;
  border: 1px solid var(--border) !important;
  box-shadow: var(--shadow-1);
}
.header .logo span {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: .2px;
  color: #0f172a;
}
.subtitle {
  margin-top: 6px;
  color: var(--text-dim) !important;
}

/* 主卡片 */
.main-content {
  background: linear-gradient(180deg, var(--surface), var(--surface-2)) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-xl) !important;
  box-shadow: var(--shadow-2) !important;
  padding: 28px !important;
}

/* 输入区卡片化 */
.input-section { margin-bottom: 22px !important; }
.input-container {
  padding: 12px !important;
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-1) !important;
  position: relative;
}
.url-input {
  background: #fbfdff !important;
  color: var(--text) !important;
  border: 1.5px solid var(--border) !important;
  border-radius: 14px !important;
  padding: 16px 48px 16px 18px !important;
  transition: all .2s ease !important;
}
.url-input:focus {
  border-color: rgba(59,130,246,0.55) !important;
  box-shadow: 0 0 0 6px rgba(59,130,246,0.12) !important;
}
.url-input::placeholder { color: #94a3b8; }

.clear-btn {
  position: absolute !important;
  right: 12px !important;
  top: 50% !important;
  transform: translateY(-50%) !important;
  width: 36px !important;
  height: 36px !important;
  border-radius: 12px !important;
  background: #f0f4ff !important;
  color: #3b82f6 !important;
  border: 1px solid #e2e8f0 !important;
  box-shadow: var(--shadow-1);
  z-index: 2;
}
.clear-btn:hover { transform: translateY(-50%) scale(1.04) !important; }

.parse-btn {
  padding: 16px 28px !important;
  border-radius: 14px !important;
  background: linear-gradient(135deg, var(--primary), var(--primary-2)) !important;
  border: 1px solid rgba(37,99,235,0.25) !important;
  box-shadow: 0 12px 28px rgba(59,130,246,0.28) !important;
  font-weight: 700 !important;
  letter-spacing: .3px;
  position: relative;
  overflow: hidden;
}
.parse-btn .btn-spinner {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.6);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.parse-btn.loading .btn-label { opacity: .75; }
.parse-btn.loading .btn-spinner { display: inline-block; }
.parse-btn:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 18px 40px rgba(59,130,246,0.36) !important;
}
.parse-btn:disabled { filter: grayscale(.1) brightness(.96) !important; }
.input-tips { color: var(--text-dim) !important; text-align: left !important; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 加载卡片与进度 */
.loading {
  margin-top: 10px;
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-1) !important;
}
.loading-title {
  color: #0f172a !important;
}
.loading-subtitle { color: var(--text-dim) !important; }
.progress-bar { background: #eef2ff !important; }
.progress-fill {
  background: linear-gradient(90deg, var(--primary), #60a5fa) !important;
}

/* 视频预览 */
.video-preview {
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-1) !important;
  border: 1px solid var(--border) !important;
}
.video-overlay { background: rgba(15,23,42,0.25) !important; }
.play-btn {
  width: 76px !important; height: 76px !important;
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  box-shadow: var(--shadow-2) !important;
}

/* 视频信息 */
.video-title {
  color: #0f172a !important;
  font-size: 1.5rem !important;
  font-weight: 800 !important;
}
.video-stats {
  gap: 18px !important;
}
.stat-item { color: var(--text-dim) !important; }
.stat-item i { color: #60a5fa !important; }

/* Prompt 卡片 */
.prompt-section {
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
}
.prompt-title { color: #0f172a !important; }
.prompt-content {
  background: #fbfdff !important;
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
}
.copy-prompt-btn {
  background: linear-gradient(135deg, #22c55e, #10b981) !important;
  border: 1px solid rgba(16,185,129,0.25) !important;
  box-shadow: 0 10px 22px rgba(16,185,129,0.28) !important;
}

/* 下载区域 */
.download-section {
  background: linear-gradient(180deg, var(--surface), var(--surface-2)) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
}
@media (min-width: 900px) {
  .download-options { grid-template-columns: 1fr 1fr !important; }
}
.download-item {
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-1) !important;
}
.download-item.featured {
  background: linear-gradient(135deg, #3b82f6, #60a5fa) !important;
  color: #ffffff !important;
  border: 1px solid rgba(255,255,255,0.35) !important;
}
.download-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-2)) !important;
  border: 1px solid rgba(37,99,235,0.25) !important;
  box-shadow: 0 10px 22px rgba(59,130,246,0.28) !important;
}
.download-btn.primary {
  background: linear-gradient(135deg, #f59e0b, #fbbf24) !important;
  color: #1f2937 !important;
  border: 1px solid rgba(245,158,11,0.35) !important;
  box-shadow: 0 12px 26px rgba(245,158,11,0.28) !important;
}

/* 分享区域 */
.share-input {
  background: #fbfdff !important;
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
}
.copy-btn {
  background: linear-gradient(135deg, #22c55e, #10b981) !important;
  border: 1px solid rgba(16,185,129,0.25) !important;
}

/* 错误与 Toast */
.error-msg {
  background: #fff7f7 !important;
  border: 1px solid #fee2e2 !important;
  color: #b91c1c !important;
  border-radius: var(--radius-md) !important;
}
.toast {
  background: linear-gradient(135deg, rgba(34,197,94,0.96), rgba(16,185,129,0.96)) !important;
  border: 1px solid rgba(255,255,255,0.25) !important;
}
.toast[style*="dc3545"] {
  background: linear-gradient(135deg, rgba(239,68,68,0.96), rgba(252, 88, 88, 0.96)) !important;
}

/* 底部 */
.footer {
  color: var(--text-dim) !important;
}
.contact-item {
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  box-shadow: var(--shadow-1) !important;
}

/* 微动效与细节 */
.download-title, .share-title, .prompt-title {
  color: #0f172a !important;
}
.input-tips { font-size: 13px !important; }

/* 响应式精调 */
@media (max-width: 768px) {
  .container { padding: 16px !important; }
  .main-content { padding: 20px !important; }
  .parse-btn, .download-btn { transform: translateZ(0) !important; }
}