/* 主题覆盖（仅视觉增强，不改动结构/类名/逻辑） */
:root {
  --bg1: #121826;
  --bg2: #0b1020;
  --card-bg: rgba(255,255,255,0.08);
  --glass-bg: rgba(255,255,255,0.10);
  --border: rgba(255,255,255,0.14);
  --text: #e8ebf0;
  --text-dim: #a9b1c7;
  --primary: #5b6fe6;
  --primary-2: #7b5bfa;
  --accent: #ffd66b;
  --success: #2ecc71;
  --danger: #ff6b6b;
  --shadow-1: 0 10px 30px rgba(0,0,0,0.25);
  --shadow-2: 0 20px 60px rgba(0,0,0,0.35);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

/* 全局重设为深色高质感背景，带动画 */
html, body {
  background: radial-gradient(1200px 800px at 10% -10%, #263056 0%, transparent 60%),
              radial-gradient(1000px 700px at 100% 0%, #3b2d6b 0%, transparent 55%),
              linear-gradient(180deg, var(--bg1), var(--bg2));
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif !important;
}

/* 背景装饰（无需额外 DOM） */
body::before, body::after {
  content: '';
  position: fixed;
  inset: auto auto 10% -10%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle at 30% 30%, rgba(123,91,250,0.35), transparent 60%),
              radial-gradient(circle at 70% 60%, rgba(91,111,230,0.35), transparent 60%);
  filter: blur(45px);
  transform: rotate(8deg);
  pointer-events: none;
  z-index: 0;
  animation: floatGlow 12s ease-in-out infinite;
}
body::after {
  inset: 5% -10% auto auto;
  transform: rotate(-10deg);
  animation-duration: 16s;
}
@keyframes floatGlow {
  0%,100% { transform: translateY(0) scale(1) rotate(8deg); opacity: .9; }
  50%     { transform: translateY(-10px) scale(1.03) rotate(6deg); opacity: 1; }
}

/* 容器与主要卡片玻璃拟态 */
.container {
  max-width: 980px !important;
  position: relative;
  z-index: 1;
}

.main-content {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.04)) !important;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl) !important;
  box-shadow: var(--shadow-2);
  color: var(--text);
  backdrop-filter: blur(12px);
}

/* 顶部区：Logo 与标题 */
.header { color: var(--text); }
.logo {
  gap: 12px !important;
  filter: drop-shadow(0 6px 18px rgba(0,0,0,0.35));
}
.logo-image {
  width: 56px !important;
  height: 56px !important;
  border: 2px solid rgba(255,255,255,0.25) !important;
}
.header .logo span {
  background: linear-gradient(90deg, #ffffff, #c9d4ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: .5px;
}
.subtitle {
  color: var(--text-dim);
  text-shadow: 0 1px 0 rgba(0,0,0,0.2);
}

/* 输入区卡片化与按钮更高级的质感 */
.input-section { margin-bottom: 26px; }
.input-container {
  padding: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}
.url-input {
  background: rgba(255,255,255,0.06) !important;
  color: var(--text) !important;
  border: 1.5px solid rgba(255,255,255,0.18) !important;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06) !important;
}
.url-input::placeholder { color: #95a2c9; }

.clear-btn {
  background: rgba(255,255,255,0.12) !important;
  color: #cfd7ff !important;
  border: 1px solid rgba(255,255,255,0.2) !important;
  box-shadow: 0 6px 16px rgba(0,0,0,0.25);
}
.clear-btn:hover { transform: translateY(-50%) scale(1.06) !important; }

/* 解析按钮：渐变质感 + 细腻高光 */
.parse-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-2)) !important;
  border: 1px solid rgba(255,255,255,0.18) !important;
  box-shadow: 0 10px 24px rgba(91,111,230,0.45) !important;
  letter-spacing: .2px;
}
.parse-btn:hover {
  transform: translateY(-2px) scale(1.015) !important;
  box-shadow: 0 16px 36px rgba(91,111,230,0.55) !important;
}
.parse-btn:disabled { filter: grayscale(.2) brightness(.9); }

/* 加载卡片玻璃质感与更清晰的进度显示 */
.loading {
  background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.06)) !important;
  border: 1px solid var(--border) !important;
  color: var(--text);
}
.progress-bar {
  background: rgba(255,255,255,0.12) !important;
}
.progress-fill {
  background: linear-gradient(90deg, var(--primary), var(--accent)) !important;
}

/* 视频预览：更高级的播放按钮 */
.video-preview { border-radius: 18px !important; }
.video-overlay { background: linear-gradient(0deg, rgba(0,0,0,.45), rgba(0,0,0,.35)) !important; }
.play-btn {
  width: 84px !important; height: 84px !important;
  background: rgba(255,255,255,0.92) !important;
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 12px 28px rgba(0,0,0,0.35);
}

/* 视频信息与统计 */
.video-title { color: #f4f6ff !important; }
.stat-item { color: var(--text-dim) !important; }
.stat-item i { color: var(--accent) !important; }

/* Prompt 卡片更清晰 */
.prompt-section {
  background: linear-gradient(180deg, rgba(255,255,255,0.07), rgba(255,255,255,0.05)) !important;
  border-left: 4px solid var(--primary) !important;
  color: var(--text);
}
.prompt-content {
  background: rgba(0,0,0,0.25) !important;
  border: 1px solid var(--border) !important;
  color: var(--text);
}

/* 下载项：更规整的栅格与层级 */
.download-section {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.04)) !important;
  border: 1px solid var(--border);
}
@media (min-width: 820px) {
  .download-options { grid-template-columns: 1fr 1fr !important; }
}
.download-item {
  background: rgba(255,255,255,0.08) !important;
  border: 1px solid var(--border) !important;
  box-shadow: var(--shadow-1);
}
.download-item:hover {
  border-color: rgba(123,91,250,0.45) !important;
  box-shadow: 0 18px 40px rgba(123,91,250,0.25);
}

/* 推荐项更亮眼但不刺眼 */
.download-item.featured {
  background: linear-gradient(135deg, rgba(91,111,230,0.85), rgba(123,91,250,0.85)) !important;
  border: 1px solid rgba(255,255,255,0.25) !important;
}
.download-btn {
  border: 1px solid rgba(255,255,255,0.18) !important;
  background: linear-gradient(135deg, var(--primary), var(--primary-2)) !important;
}
.download-btn.primary {
  background: linear-gradient(135deg, #ffe27a, #ffb84d) !important;
  color: #2b2b2b !important;
  border: 1px solid rgba(255,255,255,0.35) !important;
  box-shadow: 0 10px 22px rgba(255,190,64,0.45) !important;
}

/* 分享输入与按钮 */
.share-input {
  background: rgba(255,255,255,0.08) !important;
  border: 1px solid var(--border) !important;
  color: var(--text);
}
.copy-btn {
  background: linear-gradient(135deg, #2ecc71, #27ae60) !important;
  border: 1px solid rgba(255,255,255,0.2) !important;
}

/* 错误与 Toast 改为更协调的深色风格 */
.error-msg {
  background: rgba(255, 77, 77, 0.15) !important;
  border: 1px solid rgba(255, 107, 107, 0.45) !important;
  color: #ffb3b3 !important;
}
.toast {
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.95), rgba(46, 204, 113, 0.95)) !important;
  border: 1px solid rgba(255,255,255,0.25);
}
.toast[style*="dc3545"] {
  background: linear-gradient(135deg, rgba(220, 53, 69, 0.95), rgba(255, 107, 107, 0.95)) !important;
}

/* 底部 */
.footer { color: var(--text-dim) !important; }
.contact-item {
  background: rgba(255,255,255,0.08) !important;
  border: 1px solid var(--border) !important;
}

/* 细节优化：动效与可读性 */
.download-title, .share-title, .prompt-title {
  color: #eef1ff !important;
  text-shadow: 0 1px 0 rgba(0,0,0,0.2);
}
.input-tips { color: #aab3d6 !important; }

/* 移动端调优 */
@media (max-width: 768px) {
  .container { padding: 12px !important; }
  .main-content { border-radius: 20px !important; }
  .parse-btn, .download-btn { transform: translateZ(0); }
}