:root {
  --bg-color: #121212;
  --text-color: #ffffff;
  --card-bg: #1e1e1e;
  --accent-color: #1db954;
  --secondary-bg: #282828;
  --border-color: #333333;
}

body.light-mode {
  --bg-color: #f5f5f5;
  --text-color: #333333;
  --card-bg: #ffffff;
  --accent-color: #1db954;
  --secondary-bg: #e9e9e9;
  --border-color: #dddddd;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", "Roboto", sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: all 0.3s ease;
  line-height: 1.6;
}

.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
}

.theme-toggle button {
  background: var(--secondary-bg);
  border: none;
  color: var(--text-color);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.theme-toggle button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.download-container {
  max-width: 800px;
  margin: 30px auto;
  padding: 20px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 15px;
  animation: fadeIn 1s ease;
}

.logo-text {
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(45deg, var(--accent-color), #4ade80);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.content-section {
  margin-top: 20px;
  animation: slideUp 0.8s ease;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--accent-color);
}

.welcome-subtitle {
  font-size: 16px;
  color: var(--text-color);
  opacity: 0.9;
  line-height: 1.6;
}

.song-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  margin: 20px 0;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.song-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.song-info {
  padding: 15px;
}

.song-title {
  font-size: 18px;
  font-weight: 600;
}

.song-album {
  font-size: 14px;
  color: var(--text-color);
  opacity: 0.7;
  margin-top: 5px;
}

.song-actions {
  display: flex;
  padding: 0 15px 15px;
  gap: 10px;
}

.btn {
  border: none;
  border-radius: 50px;
  padding: 8px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background-color: var(--accent-color);
  color: white;
  gap: 5px;
}

.btn-primary:hover {
  background-color: #18a349;
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.system-requirements {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 20px;
  margin: 30px 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.system-requirements ul {
  margin-top: 15px;
  list-style-type: none;
}

.system-requirements ul li {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.system-requirements i {
  color: var(--accent-color);
  width: 20px;
  text-align: center;
}

ol li {
  margin-bottom: 15px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 768px) {
  .download-container {
    padding: 15px;
  }

  .section-title {
    font-size: 22px;
  }
}

.version-history {
  margin-top: 30px;
}

.version-item {
  border-left: 3px solid var(--accent-color);
  padding-left: 15px;
  margin-bottom: 20px;
}

.version-date {
  font-size: 14px;
  opacity: 0.7;
}

.music-count {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 5px;
  font-size: 14px;
  color: var(--text-color);
  opacity: 0.8;
}

.rating {
  display: flex;
  margin-top: 10px;
  gap: 2px;
}

.rating i {
  color: gold;
}