/* =============================
   SubliTrack Theme System
   =============================
   Aesthetic: Industrial Utility
   Focus: Precision, Safety, and Manufacturing Durability
*/

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@600;800&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  /* Core Colors - Industrial Utility */
  --clr-primary: #00E5D1;    /* electric teal */
  --clr-accent: #FF49A6;     /* neon magenta */
  --clr-ink: #0D0F12;        /* obsidian */
  --clr-surface: #252525;    /* medium dark grey */
  
  /* Extended Palette */
  --clr-text-primary: #F0F6FC;     /* crisp off-white */
  --clr-text-secondary: #8B949E;   /* muted slate */
  --clr-text-dark: #010409;        /* deep black */
  
  /* Backgrounds */
  --bg-primary: var(--clr-ink);
  --bg-surface: var(--clr-surface);
  --bg-card: #0D1117;
  --bg-overlay: rgba(1, 4, 9, 0.8);
  
  /* Borders & Dividers - Sharp & Defined */
  --border-subtle: #30363D;
  --border-medium: #484F58;
  --border-strong: var(--clr-primary);
  
  /* Shadows - Minimal & Functional */
  --shadow-small: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.6);
  --shadow-large: 0 8px 24px rgba(0, 0, 0, 0.7);
  
  /* Radius - Sharp Precision */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 4px;
  --radius-xl: 4px;
  --radius-full: 4px;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
}

body {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  letter-spacing: -0.01em;
}

h1, h2, h3, .brand {
  font-family: 'Archivo', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

/* Industrial Surface Layout */
.bg-tech {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: var(--bg-primary);
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 0;
}

.bg-tech::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0% 0%, rgba(255, 92, 0, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.bg-tech::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: repeating-linear-gradient(-45deg, var(--clr-primary), var(--clr-primary) 10px, transparent 10px, transparent 20px);
  opacity: 0.03;
  pointer-events: none;
}

.pref-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--clr-primary);
}

.pref-card .card-header {
  color: var(--clr-text-primary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
}

/* Brand Logo - Industrial Symbol */
/* Button Styles - Utilitarian */
.btn-subli-primary {
  background: var(--clr-primary);
  color: var(--clr-text-dark);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  box-shadow: var(--shadow-small);
  transition: all 0.1s ease;
}

.btn-subli-primary:hover {
  background: #E65300;
  transform: translateY(-1px);
}

.btn-subli-ghost {
  background: transparent;
  border: 1px solid var(--border-medium);
  color: var(--clr-text-primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.btn-subli-ghost:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(255, 92, 0, 0.05);
}

/* Card Styles - Modular Panels */
.card-subli {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-medium);
}

/* Form Input Styles */
.input-subli {
  background: #010409;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--clr-text-primary);
  padding: 0.65rem 0.85rem;
  font-family: 'IBM Plex Sans', sans-serif;
}

.input-subli:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 1px var(--clr-primary);
}

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