body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0; padding: 0;
  box-sizing: border-box;
  background: var(--bg-color);
  color: var(--text-color);
  transition: background 0.3s ease, color 0.3s ease;
}

body.page-loaded {
  opacity: 1;
}

:root {
  --bg-color: #f0f4f8;
  --text-color: #333;
  --card-bg: #ffffff;
  --button-bg: #ff4c60;
  --button-hover: #e43e52;
  --comment-bg: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] {
  --bg-color: #1e1e2f;
  --text-color: #f0f0f0;
  --card-bg: #2c2c3c;
  --button-bg: #ff6b81;
  --button-hover: #ff4c60;
  --comment-bg: rgba(40, 40, 60, 0.8);
}
#loader {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: #e14242;
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 1s ease, visibility 1s ease;
  opacity: 1;
  visibility: visible;
}

#loader.fade-out {
  opacity: 0;
  visibility: hidden;
}


#loader .logo {
  color: white;
  font-size: 2.5em;
  font-weight: bold;
  font-family: 'Segoe UI', sans-serif;
  user-select: none;
}

h1 {
  text-align: center;
  margin: 40px 0 20px;
  font-size: 2rem;
  color: var(--text-color);
}

#themeToggle {
  padding: 8px 16px;
  background: var(--button-bg);
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s ease;
}

#themeToggle:hover {
  background: var(--button-hover);
}

.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
  max-width: 1300px;
  padding: 0 20px 40px;
  margin: 0 auto;
}

.music-card {
  background: linear-gradient(145deg, #ffffff, #e6e9f0);
  border-radius: 16px;
  box-shadow:
    4px 4px 15px rgba(0, 0, 0, 0.1),
    -4px -4px 15px rgba(255, 255, 255, 0.7);
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.music-card:hover {
  transform: translateY(-10px) scale(1.03);
  box-shadow:
    8px 8px 30px rgba(0, 0, 0, 0.15),
    -8px -8px 30px rgba(255, 255, 255, 0.85);
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; 
  height: 0;
  overflow: hidden;
  border-radius: 16px 16px 0 0;
  margin-bottom: 16px;
  box-shadow: inset 0 0 12px rgba(0,0,0,0.1);
}

.video-wrapper iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 16px 16px 0 0;
}

.card-content {
  padding: 16px;
}

.title {
  font-size: 1.3em;
  font-weight: 900;
  background: linear-gradient(45deg, #ff4c60, #ff9068);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.title::before {
  content: "🎵";
  font-size: 1.1em;
  display: inline-block;
}

.artist {
  font-size: 1em;
  color: #666;
  margin-bottom: 14px;
  font-style: italic;
  letter-spacing: 0.05em;
}

.comment-box {
  width: 100%;
  height: 100px;
  padding: 14px;
  font-size: 0.95em;
  border-radius: 12px;
  border: none;
  background: var(--comment-bg);
  box-shadow: 0 4px 12px rgba(255, 76, 96, 0.15);
  color: #444;
  resize: none;
  box-sizing: border-box;
  transition: background 0.3s ease;
  display: block;
  margin: 0 auto;
}

.comment-box.readonly {
  pointer-events: none;
  background: rgba(255, 255, 255, 0.6);
  color: #888;
  border: 1px dashed #ff4c60;
}

[data-theme="dark"] .music-card {
  background: linear-gradient(145deg, #2a2c3a, #1b1d29);
  box-shadow:
    4px 4px 15px rgba(0, 0, 0, 0.8),
    -4px -4px 15px rgba(60, 60, 80, 0.7);
}

[data-theme="dark"] .music-card:hover {
  box-shadow:
    8px 8px 30px rgba(0, 0, 0, 0.9),
    -8px -8px 30px rgba(70, 70, 100, 0.9);
}

[data-theme="dark"] .comment-box {
  background: rgba(40, 40, 60, 0.8);
  box-shadow: 0 4px 12px rgba(255, 76, 96, 0.25);
  color: #ddd;
}

[data-theme="dark"] .comment-box.readonly {
  background: rgba(40, 40, 60, 0.6);
  color: #bbb;
  border-color: #ff6b81;
}