/* ==================== FRONTEND/CSS/VARIABLES.CSS ==================== */

/* ==================== AMBIENT DARK OBSIDIAN GLASS TOKENS ==================== */
:root {
  /* 🌌 SOLID OBSIDIAN BASE FOR ERGONOMIC READING */
  --bg-dark: #0B0D13;
  --bg-main: #0B0D13;
  --bg-sidebar: #10131D;
  --bg-sidebar-panel: #131724;
  --bg-code: #121520;
  
  /* 🪟 FROSTED OBSIDIAN GLASS (NAV, CARDS, POPOVER, MODAL) */
  --bg-nav: rgba(14, 18, 28, 0.82);
  --bg-card: rgba(19, 24, 38, 0.72);
  --bg-card-hover: rgba(26, 33, 52, 0.84);
  --bg-input: rgba(16, 21, 34, 0.8);
  --bg-popover: rgba(15, 19, 31, 0.92);
  --bg-modal: rgba(14, 18, 29, 0.94);
  
  /* 💎 SUBTLE GLASS BORDERS & SPECULAR HIGHLIGHTS */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glass-specular: rgba(255, 255, 255, 0.14);
  --border-input: rgba(255, 255, 255, 0.12);
  --border-hover: rgba(255, 255, 255, 0.22);
  --border-focus: #6366F1;
  
  /* ✨ AMBIENT INDIGO & SKY ACCENTS */
  --primary: #6366F1;
  --primary-hover: #4F46E5;
  --primary-glow: rgba(99, 102, 241, 0.28);
  --primary-subtle: rgba(99, 102, 241, 0.12);
  
  --accent-cyan: #38BDF8;
  --accent-cyan-subtle: rgba(56, 189, 248, 0.12);
  --accent-purple: #8B5CF6;
  --accent-purple-glow: rgba(139, 92, 246, 0.25);
  --accent-blue-subtle: #818CF8;
  --accent-green: #10B981;
  --accent-green-subtle: rgba(16, 185, 129, 0.12);
  --accent-red: #F43F5E;
  --accent-amber: #F59E0B;
  --accent-amber-glow: rgba(245, 158, 11, 0.3);
  
  /* 👁️ CRISP WARM CONTRAST TYPOGRAPHY (ANTI-GLARE) */
  --text-main: #E2E8F0;
  --text-bright: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.75);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);
  --shadow-glow-cyan: 0 0 20px rgba(56, 189, 248, 0.2);
  
  --glass-blur: blur(16px);
  --glass-blur-lg: blur(24px);
}



/* ==================== BUTTONS (AMBIENT OBSIDIAN GLASS) ==================== */

.btn-primary {
  background: linear-gradient(135deg, #6366F1, #4F46E5);
  color: var(--text-bright);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 2px 10px rgba(99, 102, 241, 0.28);
  user-select: none;
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #4F46E5, #4338CA);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.42);
  transform: translateY(-0.5px);
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-top: 1px solid var(--border-glass-specular);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-bright);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-0.5px);
}

.icon-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-color);
  color: var(--text-bright);
}

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

html, body {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  height: 100%;
  height: 100dvh;
  height: var(--app-height, 100dvh);
  width: 100%;
  overflow: hidden;
  position: fixed;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* APP CONTAINER */
.app-container {
  display: flex;
  height: 100%;
  height: 100dvh;
  height: var(--app-height, 100dvh);
  width: 100vw;
  overflow: hidden;
  background-color: var(--bg-dark);
}



/* ==================== GLOBAL MOBILE BACKDROP ==================== */

.mobile-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 10, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 950;
  transition: opacity 0.25s ease;
}