:root {
  --primary: #FF0000;
  --primary-dark: #FF0000;
  --black: #121212;
  --dark-gray: #1e1e1e;
  --medium-gray: #2d2d2d;
  --light-gray: #3d3d3d;
  --text-light: #f0f0f0;
  --text-dark: #333333;
  --white: #ffffff;
  --success: #2ecc71;
  --warning: #f39c12;
  --danger: #e74c3c;
  --chart-1: #FF0000;
  --chart-2: #2ecc71;
  --chart-3: #f1c40f;
  --chart-4: #9b59b6;
  --chart-5: #FF0000;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Montserrat', sans-serif;
  background-color: var(--black);
  color: var(--text-light);
  line-height: 1.6;
  transition: all 0.3s ease;
}

.app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
}

.sidebar {
  width: 280px;
  background-color: var(--dark-gray);
  border-right: 1px solid var(--medium-gray);
  height: 100vh;
  position: fixed;
  overflow-y: auto;
  transition: all 0.3s ease;
  transform: translateX(-100%);
  z-index: 100;
}

.sidebar.active {
  transform: translateX(0);
  box-shadow: 5px 0 15px rgba(0,0,0,0.3);
}

.sidebar-header {
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--medium-gray);
}

.logo img {
  max-width: 180px;
  height: auto;
}

.no-context-menu {
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

.close-menu {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.close-menu:hover {
  color: var(--primary);
  transform: rotate(90deg);
}

.sidebar-content {
  padding: 20px;
  height: calc(100vh - 70px);
  overflow-y: auto;
}

.menu-section {
  margin-bottom: 30px;
}

.menu-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 15px;
  letter-spacing: 1px;
}

.menu-list {
  list-style: none;
}

.menu-list li {
  margin-bottom: 5px;
  position: relative;
}

.menu-list a {
  display: flex;
  align-items: center;
  padding: 12px 15px;
  color: var(--text-light);
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.menu-list a:hover {
  background-color: var(--medium-gray);
  color: var(--primary);
}

.menu-list a i {
  margin-right: 10px;
  width: 20px;
  text-align: center;
  font-size: 1rem;
}

.main-content {
  flex: 1;
  margin-left: 0;
  padding: 20px;
  transition: all 0.3s ease;
}

.main-header {
  display: flex;
  align-items: center;
  padding: 15px 20px;
  background-color: var(--dark-gray);
  border-radius: 10px;
  margin-bottom: 20px;
}

.menu-toggle {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.5rem;
  margin-right: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.menu-toggle:hover {
  color: var(--primary);
}

.header-title h1 {
  font-size: 1.8rem;
  margin-bottom: 5px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.header-title p {
  font-size: 0.9rem;
  color: var(--text-light);
  opacity: 0.7;
}

.theme-selector {
  display: flex;
  margin-left: auto;
  gap: 8px;
}

.theme-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background-color: var(--medium-gray);
  color: var(--text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.theme-btn:hover {
  transform: scale(1.1);
}

.theme-btn.active {
  box-shadow: 0 0 0 2px var(--primary);
}

.player-section {
  margin-bottom: 30px;
}

.music-card {
  display: flex;
  background-color: var(--dark-gray);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  transition: all 0.3s ease;
}

.music-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0,168,255,0.2);
}

.music-cover {
  width: 120px;
  height: 120px;
  position: relative;
  flex-shrink: 0;
}

.music-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.music-info {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.music-controls {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 10px;
}

.music-controls button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--primary);
  color: white;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.music-controls button:hover {
  transform: scale(1.1);
}

.music-info h3 {
  font-size: 1.2rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.music-artist {
  font-size: 0.9rem;
  color: var(--primary);
  margin-bottom: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.music-progress {
  width: 100%;
}

.music-progress input[type="range"] {
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--medium-gray);
  outline: none;
  -webkit-appearance: none;
}

.music-progress input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.music-progress input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.3);
}

.music-time {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-light);
  opacity: 0.7;
  margin-top: 5px;
}

.token-section {
  margin-bottom: 30px;
}

.token-container {
  background-color: var(--dark-gray);
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.token-input-group {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
}

.token-input-group input {
  flex: 1;
  padding: 12px 15px;
  border-radius: 6px;
  border: 1px solid var(--medium-gray);
  background-color: var(--black);
  color: var(--text-light);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.token-input-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0,168,255,0.2);
}

.token-input-group button {
  padding: 12px 25px;
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.token-input-group button:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
}

.token-result {
  min-height: 200px;
  padding: 20px;
  background-color: rgba(0,0,0,0.2);
  border-radius: 8px;
  border-left: 4px solid var(--primary);
}

.token-result h2 {
  color: var(--primary);
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.token-result p {
  margin-bottom: 10px;
  font-size: 1rem;
}

.token-result strong {
  color: var(--primary);
}

.token-result ul {
  margin-top: 15px;
  padding-left: 20px;
}

.token-result li {
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.error-message {
  color: var(--danger);
  padding: 10px;
  background-color: rgba(231,76,60,0.1);
  border-radius: 6px;
  border-left: 4px solid var(--danger);
}

.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--medium-gray);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.main-footer {
  text-align: center;
  padding: 20px;
  color: var(--text-light);
  opacity: 0.7;
  font-size: 0.9rem;
  border-top: 1px solid var(--medium-gray);
}

body.light-mode {
  --black: #f8f9fa;
  --dark-gray: #ffffff;
  --medium-gray: #e0e0e0;
  --light-gray: #d0d0d0;
  --text-light: #333333;
  --text-dark: #121212;
  background-color: var(--black);
  color: var(--text-light);
}

body.light-mode .sidebar,
body.light-mode .main-header,
body.light-mode .music-card,
body.light-mode .token-container,
body.light-mode .token-result {
  background-color: var(--dark-gray);
  border-color: var(--medium-gray);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

body.light-mode .menu-list a,
body.light-mode .header-title p,
body.light-mode .music-time,
body.light-mode .main-footer {
  color: var(--text-light);
  opacity: 0.8;
}

body.light-mode .menu-list a:hover,
body.light-mode .music-card:hover {
  background-color: var(--light-gray);
}

body.light-mode .token-input-group input {
  background-color: var(--white);
  color: var(--text-dark);
}

body.blue-mode {
  --black: #0a192f;
  --dark-gray: #172a45;
  --medium-gray: #303f60;
  --light-gray: #475f8c;
  --text-light: #e6f1ff;
  --text-dark: #a8b2d1;
  --primary: #64ffda;
  --primary-dark: #52d1b2;
  background-color: var(--black);
  color: var(--text-light);
}

body.blue-mode .sidebar,
body.blue-mode .main-header,
body.blue-mode .music-card,
body.blue-mode .token-container,
body.blue-mode .token-result {
  background-color: var(--dark-gray);
  border-color: var(--medium-gray);
}

body.blue-mode .menu-list a,
body.blue-mode .header-title p,
body.blue-mode .music-time,
body.blue-mode .main-footer {
  color: var(--text-dark);
}

body.blue-mode .menu-list a:hover,
body.blue-mode .music-card:hover {
  background-color: var(--medium-gray);
}

body.neutral-mode {
  --black: #f5f5f5;
  --dark-gray: #e0e0e0;
  --medium-gray: #bdbdbd;
  --light-gray: #9e9e9e;
  --text-light: #212121;
  --text-dark: #424242;
  --primary: #616161;
  --primary-dark: #424242;
  background-color: var(--black);
  color: var(--text-light);
}

body.neutral-mode .sidebar,
body.neutral-mode .main-header,
body.neutral-mode .music-card,
body.neutral-mode .token-container,
body.neutral-mode .token-result {
  background-color: var(--dark-gray);
  border-color: var(--medium-gray);
}

body.neutral-mode .menu-list a,
body.neutral-mode .header-title p,
body.neutral-mode .music-time,
body.neutral-mode .main-footer {
  color: var(--text-light);
}

body.neutral-mode .menu-list a:hover,
body.neutral-mode .music-card:hover {
  background-color: var(--medium-gray);
}

body.pink-mode {
  --black: #1a1a2e;
  --dark-gray: #16213e;
  --medium-gray: #0f3460;
  --light-gray: #533483;
  --text-light: #e94560;
  --text-dark: #f8a1d1;
  --primary: #e94560;
  --primary-dark: #d13354;
  background-color: var(--black);
  color: var(--text-dark);
}

body.pink-mode .sidebar,
body.pink-mode .main-header,
body.pink-mode .music-card,
body.pink-mode .token-container,
body.pink-mode .token-result {
  background-color: var(--dark-gray);
  border-color: var(--medium-gray);
}

body.pink-mode .menu-list a,
body.pink-mode .header-title p,
body.pink-mode .music-time,
body.pink-mode .main-footer {
  color: var(--text-dark);
}

body.pink-mode .menu-list a:hover,
body.pink-mode .music-card:hover {
  background-color: var(--medium-gray);
}

@media (max-width: 768px) {
  .sidebar {
    width: 250px;
  }
  
  .main-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .header-title {
    margin-bottom: 15px;
  }
  
  .theme-selector {
    margin-left: 0;
    width: 100%;
    justify-content: space-between;
  }
  
  .token-input-group {
    flex-direction: column;
  }
  
  .music-card {
    flex-direction: column;
  }
  
  body.red-mode {
  --black: #1c0f0f;
  --dark-gray: #2a0e0e;
  --medium-gray: #441414;
  --light-gray: #661a1a;
  --text-light: #f8d7da;
  --text-dark: #c0392b;
  --primary: #e74c3c;
  --primary-dark: #c0392b;
  background-color: var(--black);
  color: var(--text-light);
}

body.red-mode .sidebar,
body.red-mode .main-header,
body.red-mode .music-card,
body.red-mode .plan-card {
  background-color: var(--dark-gray);
  border-color: var(--medium-gray);
}

body.red-mode .menu-list a,
body.red-mode .plan-description,
body.red-mode .plan-requests,
body.red-mode .music-time,
body.red-mode .main-footer {
  color: var(--text-light);
}

body.red-mode .menu-list a:hover,
body.red-mode .plan-card:hover {
  background-color: var(--medium-gray);
}

body.red-mode .header-title p,
body.red-mode .music-artist {
  color: var(--text-light);
  opacity: 0.9;
}

body.red-mode .theme-btn {
  background-color: var(--medium-gray);
}
  
  .music-cover {
    width: 100%;
    height: 200px;
  }
}