/* =============================
   SubliTrack Theme System
   =============================
   Modern tech-inspired theme with electric teal and neon magenta
   Based on SubliTrack 4-Color Schema
*/

:root {
  /* Core Colors */
  --clr-primary: #00E5D1;    /* electric teal */
  --clr-accent: #FF49A6;     /* neon magenta */
  --clr-ink: #0B1020;        /* midnight navy */
  --clr-surface: #0F172A;    /* slate surface */
  
  /* Extended Palette */
  --clr-text-primary: #E5E7EB;     /* light slate text */
  --clr-text-secondary: #B9C3D6;   /* muted text */
  --clr-text-dark: #0B0B0B;        /* dark text for light backgrounds */
  
  /* Backgrounds */
  --bg-primary: var(--clr-ink);
  --bg-surface: var(--clr-surface);
  --bg-card: rgba(15, 23, 42, 0.8);
  --bg-overlay: rgba(15, 23, 42, 0.85);
  
  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(42, 183, 255, 0.6);
  
  /* Shadows & Effects */
  --shadow-small: 0 2px 10px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-large: 0 10px 30px rgba(0, 0, 0, 0.45), 0 2px 10px rgba(0, 0, 0, 0.3);
  
  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-full: 999px;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
}

/* Tech Background Animation */
.bg-tech {
  position: relative;
  isolation: isolate;
  /* Ensure page can scroll when content exceeds viewport */
  min-height: 100vh;
  min-height: 100dvh; /* modern viewport unit */
  overflow-y: auto;   /* allow vertical scrolling */
  overflow-x: hidden; /* avoid horizontal scrollbar from animated layers */
  background:
    radial-gradient(1000px 600px at 10% 15%, rgba(0,229,209,.18), transparent 60%),
    radial-gradient(900px 500px at 85% 85%, rgba(255,73,166,.15), transparent 60%),
    var(--clr-ink);
  background-blend-mode: screen, screen, normal;
  z-index: 0;
}

.bg-tech::before,
.bg-tech::after {
  content: "";
  position: absolute;
  inset: 0; /* Changed from -160px to 0 to prevent overflow */
  pointer-events: none;
  z-index: -1;
}

/* Move the grid via transforms so it stays on the compositor */
.bg-tech::before {
  background:
    repeating-linear-gradient(60deg, rgba(255,255,255,.04) 0 2px, transparent 2px 90px),
    repeating-linear-gradient(-60deg, rgba(255,255,255,.035) 0 2px, transparent 2px 90px);
  background-blend-mode: overlay;
  will-change: transform;
  animation: tech-pan 36s ease-in-out infinite;
}

@keyframes tech-pan {
  0%   { transform: translate3d(-45px, -25px, 0); }
  50%  { transform: translate3d(45px, 25px, 0); }
  100% { transform: translate3d(-45px, -25px, 0); }
}

/* Circuit trace overlay */
.bg-tech::after {
  opacity: 0.06;
  mix-blend-mode: soft-light;
  background-image: url('../images/subli-circuit-overlay@2x.png');
  background-size: cover;
  background-position: center;
}

.bg-tech.bg-tech--static::before {
  animation: none;
  transform: translate3d(0, 0, 0);
  opacity: 0.45;
}

.bg-tech.bg-tech--static::after {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .bg-tech::before {
    animation: none;
    opacity: 0.5;
  }

  .bg-tech::after {
    opacity: 0.08;
  }
}

.pref-card {
  background: var(--bg-card);
  border-color: var(--border-subtle);
}

.pref-card .card-header {
  color: var(--clr-text-primary);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.pref-card .card-body {
  color: var(--clr-text-primary);
}

.pref-card .custom-control-label {
  color: var(--clr-text-primary);
  font-weight: 600;
  letter-spacing: 0.25px;
}

.pref-card .custom-control-label::before {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
}

.pref-card .custom-control-input:checked ~ .custom-control-label::before {
  background-color: rgba(0, 229, 209, 0.4);
  border-color: var(--clr-primary);
}

.pref-card__helper {
  margin-top: 0.65rem;
  font-size: 0.95rem;
  color: var(--clr-text-secondary);
  line-height: 1.5;
}

/* Brand Logo Component */
.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: 
    radial-gradient(circle at 30% 30%, var(--clr-primary), transparent 55%),
    radial-gradient(circle at 70% 70%, var(--clr-accent), transparent 55%),
    linear-gradient(135deg, #0ea5b3 0%, #7c1352 100%);
  box-shadow: 
    0 0 0 2px rgba(255,255,255,.05) inset, 
    var(--shadow-medium);
}

/* Button Styles */
.btn-subli-primary {
  background: var(--clr-primary);
  color: var(--clr-text-dark);
  border: none;
  border-radius: var(--radius-xl);
  padding: 0.85rem 1.1rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  box-shadow: var(--shadow-large);
  transition: all 0.2s ease;
}

.btn-subli-primary:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
  color: var(--clr-text-dark);
}

.btn-subli-ghost {
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border-medium);
  color: var(--clr-text-primary);
  border-radius: var(--radius-xl);
  padding: 0.85rem 1.1rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  transition: all 0.2s ease;
}

.btn-subli-ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: var(--clr-primary);
  color: var(--clr-text-primary);
}

/* Card Styles */
.card-subli {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-large);
  backdrop-filter: blur(4px);
}

/* Form Input Styles */
.input-subli {
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  padding: 0.75rem 1rem;
  transition: all 0.2s ease;
}

.input-subli:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 0.2rem rgba(0, 229, 209, 0.25);
  background: rgba(255,255,255,.08);
}

.input-subli::placeholder {
  color: var(--clr-text-secondary);
  opacity: 0.8;
}

/* Text Styles */
.text-primary-subli { color: var(--clr-primary); }
.text-accent-subli { color: var(--clr-accent); }
.text-muted-subli { color: var(--clr-text-secondary); }

/* Utility Classes */
.backdrop-blur { backdrop-filter: blur(8px); }
.glow-primary { box-shadow: 0 0 20px rgba(0, 229, 209, 0.3); }
.glow-accent { box-shadow: 0 0 20px rgba(255, 73, 166, 0.3); }

/* Responsive breakpoints */
@media (max-width: 768px) {
  :root {
    --space-lg: 1rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
  }
}