/* Global Design System & Variables - Premium Glassmorphism Theme */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg-main: #0a0b10;
  --bg-card: rgba(22, 25, 38, 0.7);
  --bg-card-hover: rgba(30, 35, 54, 0.85);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-glow: rgba(168, 85, 247, 0.4);

  --primary-purple: #8b5cf6;
  --primary-glow: rgba(139, 92, 246, 0.35);
  --accent-pink: #ec4899;
  --accent-cyan: #06b6d4;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;

  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(at 0% 0%, rgba(139, 92, 246, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.15) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(6, 182, 212, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Glassmorphism Card Utility */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  transition: all var(--transition-smooth);
}

.glass-card:hover {
  border-color: var(--glass-border-glow);
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, #a855f7 0%, #ec4899 50%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-smooth);
  text-decoration: none;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-purple), var(--accent-pink));
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(236, 72, 153, 0.45);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-main);
}

.btn-danger {
  background: linear-gradient(135deg, #f43f5e, #be123c);
  color: #fff;
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244, 63, 94, 0.5);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.85rem;
}

/* Badge System */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-purple {
  background: rgba(139, 92, 246, 0.2);
  color: #c084fc;
  border: 1px solid rgba(139, 92, 246, 0.4);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.badge-green {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.badge-rose {
  background: rgba(244, 63, 94, 0.2);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.4);
}

/* Audio Equalizer Animation */
.equalizer-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 18px;
}

.equalizer-bar {
  width: 3px;
  background: linear-gradient(to top, var(--primary-purple), var(--accent-pink));
  border-radius: 3px;
  animation: equalize 1.2s infinite ease-in-out alternate;
}

.equalizer-bar:nth-child(1) { animation-delay: 0.1s; height: 30%; }
.equalizer-bar:nth-child(2) { animation-delay: 0.3s; height: 80%; }
.equalizer-bar:nth-child(3) { animation-delay: 0.2s; height: 50%; }
.equalizer-bar:nth-child(4) { animation-delay: 0.4s; height: 100%; }

@keyframes equalize {
  0% { height: 20%; }
  100% { height: 100%; }
}

/* Toast Notifications Container */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-col: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 400px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-success { border-left: 4px solid var(--accent-emerald); }
.toast-error { border-left: 4px solid var(--accent-rose); }
.toast-info { border-left: 4px solid var(--accent-cyan); }

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Modal Window Base */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-smooth);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  width: 100%;
  max-width: 480px;
  background: #111422;
  border: 1px solid var(--glass-border-glow);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  transform: scale(0.9);
  transition: transform var(--transition-smooth);
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}