:root {
  --primary: #10B981; 
  --primary-hover: #059669;
  --secondary: #34D399;
  --bg-color: #000000; 
  --surface: rgba(31, 41, 55, 0.75); 
  --surface-alt: rgba(55, 65, 81, 0.6); 
  --text-main: #FFFFFF;
  --text-muted: #A7F3D0;
  --border-color: rgba(52, 211, 153, 0.2);
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --radius-md: 8px;
  --radius-lg: 12px;
  --font-sans: 'Inter', sans-serif;
  --transition: all 0.2s ease;
}

[data-theme='light'] {
  --bg-color: #F0FDF4; 
  --surface: #FFFFFF; 
  --surface-alt: #ECFDF5; 
  --text-main: #064E3B;
  --text-muted: #059669;
  --border-color: #A7F3D0;
}

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

html, body {
  width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.5;
  transition: var(--transition);
  min-height: 100vh;
  padding: 1rem;
  position: relative;
}

/* Background Scaling Fix */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-size: cover;
  background-position: center;
  pointer-events: none;
}

/* Base UI */
h1, h2, h3, h4 { color: var(--text-main); margin-bottom: 0.5rem; }
a { color: var(--primary); text-decoration: none; }

.card {
  background-color: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  display: flex; flex-direction: column;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  width: 100%;
}
.card-title { 
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600; 
  margin-bottom: 1rem; 
  color: var(--primary); 
  border-bottom: 1px solid var(--border-color); 
  padding-bottom: 0.75rem; 
}

/* Header - Mobile First */
.top-header { 
  background-color: var(--surface); 
  backdrop-filter: blur(10px); 
  padding: 1rem; 
  border-radius: var(--radius-lg); 
  border: 1px solid var(--border-color); 
  display: flex; 
  flex-direction: column;
  gap: 1rem;
  align-items: center; 
  margin-bottom: 1.5rem;
  text-align: center;
}

.header-stats {
  display: flex;
  gap: 0.5rem;
  width: 100%;
  justify-content: center;
}

.stat-box {
  background: rgba(0,0,0,0.5); 
  padding: 0.4rem 0.8rem; 
  border-radius: 8px; 
  border: 1px solid var(--border-color);
  flex: 1;
}

.nav-pills { 
  display: none; /* Hidden on mobile, use bottom nav */
}

/* Bottom Nav for Mobile */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 70px;
  background: var(--surface);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  padding: 0.5rem;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  font-size: 0.7rem;
  cursor: pointer;
  transition: var(--transition);
  padding: 0.5rem;
  border-radius: 12px;
}
.nav-item.active {
  color: var(--primary);
  background: rgba(16, 185, 129, 0.1);
}
.nav-item i { font-size: 1.25rem; }

/* Desktop Media Query (min-width: 1024px) */
@media (min-width: 1024px) {
  body { padding: 2rem; }
  .top-header { 
    flex-direction: row; 
    justify-content: space-between; 
    padding: 1rem 2rem;
  }
  .header-stats { width: auto; }
  .nav-pills { display: flex; gap: 0.5rem; background-color: rgba(0,0,0,0.3); padding: 0.25rem; border-radius: var(--radius-md); border: 1px solid var(--border-color); flex-wrap: nowrap; }
  .bottom-nav { display: none; }
  
  .grid-layout { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
  .action-buttons { grid-template-columns: repeat(3, 1fr); }
}

/* Tablet Media Query (min-width: 768px) and (max-width: 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  .grid-layout { grid-template-columns: repeat(2, 1fr); }
  .action-buttons { grid-template-columns: repeat(2, 1fr); }
}

/* Views */
.view-section { display: none; margin-bottom: 5rem; padding-bottom: 20px;}
.view-section.active-view { display: block; animation: floatIn 0.3s ease; }
@keyframes floatIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); }}

.grid-layout { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem; }
.action-buttons { display: grid; grid-template-columns: 1fr; gap: 1rem; margin-bottom: 1.5rem; }

@media (min-width: 768px) {
    .grid-layout { display: grid; }
    .action-buttons { display: grid; }
}

.btn-action { 
  background-color: var(--primary); 
  color: #000; 
  padding: 1rem; 
  border-radius: var(--radius-md); 
  font-weight: 600; 
  cursor: pointer; 
  text-align: center; 
  transition: var(--transition);
}
.btn-action:active { transform: scale(0.98); }

/* Form Elements */
.input-group { margin-bottom: 1.25rem; }
.input-label { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: 0.4rem; color: var(--text-muted); }
.input-field { 
  width: 100%; 
  padding: 0.8rem; 
  border-radius: 8px; 
  border: 1px solid var(--border-color); 
  background-color: rgba(0,0,0,0.5); 
  color: var(--text-main); 
  font-family: inherit; 
  font-size: 1rem;
}
.input-field:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2); }

.btn { padding: 0.75rem 1.25rem; border-radius: 8px; font-weight: 600; cursor: pointer; border: none; transition: var(--transition); font-size: 1rem; min-height: 48px;}
.btn-primary { background-color: var(--primary); color: #000; width: 100%; }
.btn-primary:hover { background-color: var(--primary-hover); color: white;}
.btn:active { transform: scale(0.98); }

/* Music Widget - Responsive */
.music-widget { 
  position: fixed; 
  bottom: 80px; 
  right: 1rem; 
  width: calc(100% - 2rem); 
  max-width: 300px;
  background-color: var(--surface); 
  backdrop-filter: blur(15px); 
  border: 1px solid var(--border-color); 
  border-radius: var(--radius-lg); 
  z-index: 100; 
  transition: height 0.3s; 
  overflow: hidden; 
}
@media (min-width: 1024px) {
  .music-widget { bottom: 2rem; right: 2rem; }
}
.music-header { display: flex; justify-content: space-between; padding: 0.75rem 1rem; background-color: rgba(0,0,0,0.3); border-bottom: 1px solid var(--border-color); font-weight: 600;}
.music-list { padding: 1rem; display: flex; flex-direction: column; gap: 0.5rem; height: 180px; transition: 0.3s;}
.music-list.hidden { height: 0; padding: 0; opacity: 0; pointer-events: none;}
.music-btn { background-color: var(--surface-alt); color: var(--text-main); border: 1px solid var(--border-color); padding: 0.6rem; border-radius: 6px; cursor: pointer; font-size: 0.9rem;}
.music-btn:hover { background-color: var(--primary); color: #000;}
.music-btn.active-track { 
  background-color: var(--primary); 
  color: #000; 
  font-weight: 600;
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
  animation: pulse-active 2s infinite;
}

@keyframes pulse-active {
  0% { transform: scale(1); }
  50% { transform: scale(1.02); opacity: 0.9; }
  100% { transform: scale(1); }
}

#current-track {
  transition: all 0.3s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.timer-display { font-size: 5rem; font-weight: 800; text-align: center; margin: 1.5rem 0; color: var(--primary); font-variant-numeric: tabular-nums; text-shadow: 0 0 20px rgba(16, 185, 129, 0.3);}

/* Login Specific (Mobile-First) */
.auth-page {
  overflow-y: auto !important;
}
.split-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
  z-index: 10;
  width: 100%;
}
@media (min-width: 1024px) {
  .split-layout { flex-direction: row; }
}

.hero-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem;
  color: white;
  text-align: center;
}
@media (min-width: 1024px) {
  .hero-section { padding: 5rem 6rem; text-align: left; }
}

.auth-container-wrapper {
  width: 100%;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
@media (min-width: 1024px) {
  .auth-container-wrapper { width: 550px; padding-right: 4rem; }
}

.auth-section {
  width: 100%;
  max-width: 450px;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(24px);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid var(--border-color);
}