:root {
  --space-purple: #0a0015;
  --cosmic-blue: #000525;
  --neon-cyan: #00ffff;
  --electric-pink: #ff0080;
  --neon-green: rgba(245, 245, 220, 0.86);
  --glass-white: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.15);
  --text-primary: #ffffff;
  --text-secondary: #e0e0e0;
}

/* ===== GLOBAL RESET ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: linear-gradient(135deg, var(--space-purple) 0%, var(--cosmic-blue) 100%);
  color: var(--text-primary);
  overflow: hidden;
  position: relative;
  min-height: 100vh;
}

.theme-toggle {
  background: var(--glass-white);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  transition: all 0.3s ease;
  margin-left: 15px;
}
.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
  transform: scale(1.1);
}

/* ===== LIGHT MODE (Better Colors & Readability) ===== */
body.light-mode {
  --space-purple: #f8fafc;          /* Very light gray-blue background */
  --cosmic-blue: #e2e8f0;           /* Slightly darker light gray */
  --neon-cyan: #0ea5e9;             /* Sky blue (readable) */
  --electric-pink: #e11d48;         /* Rose red (readable) */
  --neon-green: #10b981;            /* Emerald green */
  --glass-white: rgba(255, 255, 255, 0.9);  /* More opaque white */
  --glass-border: rgba(0, 0, 0, 0.15);      /* Darker border */
  --text-primary: #0f172a;          /* Dark navy (excellent contrast) */
  --text-secondary: #475569;        /* Medium gray (good contrast) */
}

/* Light mode specific elements */
body.light-mode {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

body.light-mode .sidebar,
body.light-mode .chat-header,
body.light-mode .chat-input,
body.light-mode .right-panel {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-mode .chat-window {
  background: rgba(248, 250, 252, 0.8);
}

body.light-mode .bot-message .bubble {
  background: rgba(14, 165, 233, 0.15);     /* Light sky blue */
  border-color: rgba(14, 165, 233, 0.3);
  color: var(--text-primary);
}

body.light-mode .user-message .bubble {
  background: rgba(225, 29, 72, 0.15);      /* Light rose */
  border-color: rgba(225, 29, 72, 0.3);
  color: var(--text-primary);
}

body.light-mode .mood-btn {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: var(--text-primary);
}

body.light-mode .mood-btn:hover {
  background: rgba(255, 255, 255, 1);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(14, 165, 233, 0.3);
}

body.light-mode .input-field {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.15);
  color: var(--text-primary);
}

body.light-mode .input-field::placeholder {
  color: rgba(71, 85, 105, 0.6);
}

body.light-mode .input-field:focus {
  border-color: var(--neon-cyan);
  background: rgba(255, 255, 255, 1);
}

body.light-mode .voice-btn {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.15);
  color: var(--text-primary);
}

body.light-mode .theme-toggle {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.15);
  color: var(--text-primary);
}

body.light-mode .theme-toggle:hover {
  background: rgba(255, 255, 255, 1);
  box-shadow: 0 0 15px rgba(14, 165, 233, 0.3);
}

body.light-mode .now-playing,
body.light-mode .stat-item {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

body.light-mode .particle {
  background: var(--neon-cyan);
  box-shadow: 0 0 8px var(--neon-cyan);
  opacity: 0.4;
}

/* Fix scrollbar for light mode */
body.light-mode .chat-window::-webkit-scrollbar-track { 
  background: rgba(0, 0, 0, 0.05); 
}
body.light-mode .chat-window::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, var(--neon-cyan), var(--electric-pink));
}

/* Fix visualizer bars for light mode */
body.light-mode .bar {
  background: linear-gradient(to top, var(--electric-pink), var(--neon-cyan));
}

body.light-mode .big-bar {
  background: linear-gradient(to top, var(--neon-green), var(--neon-cyan), var(--electric-pink));
}

/* ===== ANIMATED BACKGROUND ===== */
.background-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--neon-cyan);
  border-radius: 50%;
  opacity: 0.6;
  animation: float 20s infinite ease-in-out;
  box-shadow: 0 0 10px var(--neon-cyan);
}
@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0.6; }
  25% { transform: translateY(-100px) translateX(50px); opacity: 1; }
  50% { transform: translateY(-200px) translateX(-30px); opacity: 0.4; }
  75% { transform: translateY(-100px) translateX(-80px); opacity: 0.8; }
}

/* ===== MAIN CONTAINER ===== */
.app-container {
  position: relative;
  z-index: 1;
  display: flex;
  width: 100vw;
  height: 100vh;
}

/* ===== SIDEBAR (Desktop Only) ===== */
.sidebar {
  width: 300px;
  background: rgba(10, 0, 21, 0.6);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--glass-border);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.logo-section {
  text-align: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--glass-border);
}
.logo-section h1 {
  font-size: 28px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--electric-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 3s ease infinite;
}
@keyframes gradientShift {
  0%, 100% { filter: hue-rotate(0deg); }
  50% { filter: hue-rotate(30deg); }
}
.subtitle {
  font-size: 12px; 
  color: var(--text-secondary); 
  margin-top: 5px;
}
.mood-presets {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mood-presets h3 {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 5px;
}
.mood-btn {
  padding: 12px 16px;
  background: var(--glass-white);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
  text-align: left;
}
.mood-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
  transform: translateX(5px);
}

/* ===== MAIN CHAT AREA ===== */
.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}
.chat-header {
  background: rgba(10, 0, 21, 0.7);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--glass-border);
  padding: 20px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 15px;
}
.header-title {
  font-size: 20px;
  font-weight: 600;
}
.visualizer {
  display: flex;
  gap: 3px;
  align-items: flex-end;
  height: 20px;
}
.bar {
  width: 3px;
  background: linear-gradient(to top, var(--electric-pink), var(--neon-cyan));
  border-radius: 2px;
  animation: pulse 0.8s ease-in-out infinite;
}
.bar:nth-child(1) { animation-delay: 0s; height: 8px; }
.bar:nth-child(2) { animation-delay: 0.1s; height: 15px; }
.bar:nth-child(3) { animation-delay: 0.2s; height: 12px; }
.bar:nth-child(4) { animation-delay: 0.3s; height: 18px; }
.bar:nth-child(5) { animation-delay: 0.4s; height: 10px; }
@keyframes pulse {
  0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ===== CHAT WINDOW ===== */
.chat-window {
  flex: 1;
  padding: 30px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
  background: rgba(0, 0, 0, 0.2);
}
.chat-window::-webkit-scrollbar { width: 8px; }
.chat-window::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.05); }
.chat-window::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, var(--neon-cyan), var(--electric-pink));
  border-radius: 10px;
}

/* ===== MESSAGE BUBBLES ===== */
.message { display: flex; animation: slideIn 0.4s ease-out; }
@keyframes slideIn {
  from { opacity: 0; transform: translateY(20px);}
  to { opacity: 1; transform: translateY(0);}
}
.bubble {
  max-width: 70%;
  padding: 14px 18px;
  border-radius: 18px;
  font-size: 15px;
  line-height: 1.5;
  position: relative;
}
.bot-message { justify-content: flex-start; }
.bot-message .bubble {
  background: rgba(0, 255, 255, 0.1);
  border: 1px solid rgba(0, 255, 255, 0.3);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border-bottom-left-radius: 4px;
}
.user-message { justify-content: flex-end; }
.user-message .bubble {
  background: rgba(255, 0, 128, 0.1);
  border: 1px solid rgba(255, 0, 128, 0.3);
  box-shadow: 0 0 20px rgba(255, 0, 128, 0.2);
  backdrop-filter: blur(10px);
  border-bottom-right-radius: 4px;
}

/* ===== TYPING INDICATOR ===== */
.typing { display: flex; gap: 4px; padding: 10px 0; }
.typing-dot {
  width: 8px; height: 8px; background: var(--neon-cyan);
  border-radius: 50%; animation: typingBounce 1.4s infinite ease-in-out;
  box-shadow: 0 0 10px var(--neon-cyan);
}
.typing-dot:nth-child(1) { animation-delay: 0s; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0);}
  30% { transform: translateY(-10px);}
}

/* ===== INPUT AREA ===== */
.chat-input {
  display: flex;
  gap: 10px;
  padding: 20px 30px;
  background: rgba(10, 0, 21, 0.7);
  backdrop-filter: blur(15px);
  border-top: 1px solid var(--glass-border);
}
.input-field {
  flex: 1;
  padding: 14px 18px;
  background: var(--glass-white);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: all 0.3s ease;
}
.input-field::placeholder {
  color: rgba(255,255,255,0.4);
}
.input-field:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0,255,255,0.3);
  background: rgba(255,255,255,0.08);
}
.voice-btn, .send-btn {
  padding: 14px 20px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-size: 18px;
  transition: all 0.3s ease;
}
.voice-btn {
  background: var(--glass-white);
  border: 1px solid var(--glass-border);
}
.voice-btn:hover {
  background: rgba(255,255,255,0.1);
  box-shadow: 0 0 20px rgba(0,255,255,0.3);
  transform: scale(1.05);
}
.send-btn {
  background: linear-gradient(135deg, var(--neon-cyan), var(--electric-pink));
  color: var(--text-primary);
  font-weight: 600;
  padding: 14px 30px;
  box-shadow: 0 0 20px rgba(0,255,255,0.4);
}
.send-btn:hover {
  box-shadow: 0 0 30px rgba(255,0,128,0.6);
  transform: scale(1.05);
}

/* ===== RIGHT PANEL (Desktop Only) ===== */
.right-panel {
  width: 280px;
  background: rgba(10,0,21,0.6);
  backdrop-filter: blur(20px);
  border-left: 1px solid var(--glass-border);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.now-playing {
  padding: 20px;
  background: var(--glass-white);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  text-align: center;
}
.now-playing h3 {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 15px;
}
.album-art {
  width: 120px; height: 120px;
  background: linear-gradient(135deg, var(--electric-pink), var(--neon-cyan));
  border-radius: 12px;
  margin: 0 auto 15px;
  display: flex; align-items: center; justify-content: center;
  font-size: 48px;
  /*animation: rotate 10s linear infinite;*/
}
@keyframes rotate {
  from { transform: rotate(0deg);}
  to { transform: rotate(360deg);}
}

.panel-visualizer{
  text-align: center;
}
.panel-visualizer h3 {
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.track-info {
  font-size: 13px;
  line-height: 1.6;
}
.track-details {
  color: var(--text-secondary);
}
.big-visualizer {
    display: flex;
    gap: 4px;
    justify-content: center;
    height: 80px;
    align-items: flex-end;
}
.big-bar {
    width: 6px;
    background: linear-gradient(to top, var(--neon-green), var(--neon-cyan), var(--electric-pink));
    border-radius: 3px;
    animation: bigPulse 1s ease-in-out infinite;
}
.big-bar:nth-child(1) { animation-delay: 0s; height: 20px;}
.big-bar:nth-child(2) { animation-delay: 0.1s; height: 35px; }
.big-bar:nth-child(3) { animation-delay: 0.2s; height: 55px; }
.big-bar:nth-child(4) { animation-delay: 0.3s; height: 40px; }
.big-bar:nth-child(5) { animation-delay: 0.4s; height: 65px; }
.big-bar:nth-child(6) { animation-delay: 0.5s; height: 30px; }
.big-bar:nth-child(7) { animation-delay: 0.6s; height: 45px; }
.big-bar:nth-child(8) { animation-delay: 0.7s; height: 25px; }

@keyframes bigPulse {
  0%, 100% { transform: scaleY(0.7); opacity: 0.6; }
  50% { transform: scaleY(1); opacity: 1; }
}

.stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.stats h3 {
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}
.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--glass-white);
    border-radius: 8px;
    font-size: 12px;
}
.stat-label {
    color: var(--text-muted);
}
.stat-value {
    color: var(--text-primary);
    font-weight: 600;
}
/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 767px) {
  .sidebar, .right-panel { display: none; }
  .chat-header { padding: 15px 20px;}
  .header-title { font-size: 18px;}
  .chat-window { padding: 20px 15px;}
  .bubble { max-width: 85%; font-size: 14px;}
  .chat-input { padding: 15px; gap: 8px;}
  .input-field { font-size: 14px; padding: 12px 15px;}
  .voice-btn { padding: 12px 16px; font-size: 16px;}
  .send-btn { padding: 12px 20px; font-size: 14px;}
}

/* ===== TABLET ===== */
@media (min-width: 768px) and (max-width: 1023px) {
  .sidebar { width: 240px; }
  .right-panel { width: 220px; }
}