/**
 * Dark Reborn 3D Brand System - Core CSS Variables & Utility Classes
 * Version 2.0.0
 */

:root {
  /* Brand Colors */
  --dr-primary: #b81414;
  --dr-primary-light: #ff263b;
  --dr-primary-dark: #700808;
  --dr-primary-glow: rgba(184, 20, 20, 0.45);
  
  --dr-metal-light: #f5f7fa;
  --dr-metal-mid: #8f96a3;
  --dr-metal-dark: #343c4d;

  --dr-bg-base: #060709;
  --dr-bg-surface: #0f1218;
  --dr-bg-elevated: #161a23;
  --dr-border: rgba(255, 255, 255, 0.08);
  --dr-border-focus: #b81414;

  /* Typography */
  --dr-font-display: 'Orbitron', sans-serif;
  --dr-font-body: 'Rajdhani', sans-serif;

  /* Shadows */
  --dr-shadow-glow: 0 0 35px var(--dr-primary-glow);
  --dr-shadow-card: 0 16px 32px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --dr-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Utility Classes */
.dr-text-glow {
  text-shadow: 0 0 20px var(--dr-primary-glow);
}

.dr-card-3d {
  background: var(--dr-bg-elevated);
  border: 1px solid var(--dr-border);
  border-radius: 16px;
  box-shadow: var(--dr-shadow-card);
  transition: var(--dr-transition);
}
.dr-card-3d:hover {
  border-color: var(--dr-primary);
  box-shadow: var(--dr-shadow-glow);
  transform: translateY(-4px);
}

.dr-btn-primary {
  background: linear-gradient(135deg, var(--dr-primary), var(--dr-primary-light));
  color: #ffffff;
  font-family: var(--dr-font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 16px 36px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: var(--dr-shadow-glow);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: var(--dr-transition);
}
.dr-btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.15);
}