:root,
[data-theme="dark"] {
  --theme-name: "dark";
  
  --color-bg-0: #060912;
  --color-bg-1: #0B1222;
  --color-bg-2: #111827;
  --color-bg-card: rgba(255, 255, 255, 0.06);
  --color-bg-card-hover: rgba(255, 255, 255, 0.09);
  --color-bg-elevated: rgba(255, 255, 255, 0.08);
  --color-bg-overlay: rgba(0, 0, 0, 0.75);
  --color-bg-input: rgba(0, 0, 0, 0.25);
  
  --sidebar-bg: linear-gradient(180deg, rgba(11, 18, 34, 0.98), rgba(6, 9, 18, 0.98));
  --topbar-bg: rgba(6, 9, 18, 0.92);
  --hero-card-bg: linear-gradient(135deg, rgba(216, 178, 92, 0.08) 0%, rgba(11, 18, 34, 0.95) 100%);
  --quickstart-bg: linear-gradient(135deg, rgba(212, 175, 55, 0.08) 0%, rgba(212, 175, 55, 0.02) 100%);
  
  --nav-cta-bg: linear-gradient(180deg, rgba(216, 178, 92, 0.20), rgba(216, 178, 92, 0.08));
  --nav-cta-bg-hover: linear-gradient(180deg, rgba(216, 178, 92, 0.28), rgba(216, 178, 92, 0.12));
  --nav-blue-bg: linear-gradient(180deg, rgba(59, 130, 246, 0.15), rgba(59, 130, 246, 0.06));
  --nav-blue-bg-hover: linear-gradient(180deg, rgba(59, 130, 246, 0.22), rgba(59, 130, 246, 0.10));
  --nav-purple-bg: linear-gradient(180deg, rgba(168, 85, 247, 0.15), rgba(168, 85, 247, 0.06));
  --nav-purple-bg-hover: linear-gradient(180deg, rgba(168, 85, 247, 0.22), rgba(168, 85, 247, 0.10));
  
  --btn-gold-gradient: linear-gradient(135deg, #D8B25C 0%, #b8931f 100%);
  --btn-gold-text: #060912;
  --shadow-gold: 0 4px 20px rgba(216, 178, 92, 0.3);
  --shadow-gold-hover: 0 8px 30px rgba(216, 178, 92, 0.4);
  --shadow-glow-gold: 0 0 20px rgba(212, 175, 55, 0.6);

  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-subtle: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.20);

  --color-text: #EAF0FB;
  --color-text-primary: #EAF0FB;
  --color-text-secondary: rgba(234, 240, 251, 0.72);
  --color-text-muted: rgba(234, 240, 251, 0.52);
  --color-text-disabled: rgba(234, 240, 251, 0.32);
  --color-text-inverse: #060912;

  --color-gold: #D8B25C;
  --color-gold-light: #F3D48B;
  --color-gold-dark: #B8962C;
  --color-gold-bg: rgba(216, 178, 92, 0.12);
  --color-gold-border: rgba(216, 178, 92, 0.35);

  --color-emerald: #22C55E;
  --color-emerald-light: #4ADE80;
  --color-emerald-dark: #16A34A;
  --color-emerald-bg: rgba(34, 197, 94, 0.12);
  --color-emerald-border: rgba(34, 197, 94, 0.35);

  --color-amber: #F59E0B;
  --color-amber-light: #FBBF24;
  --color-amber-dark: #D97706;
  --color-amber-bg: rgba(245, 158, 11, 0.12);
  --color-amber-border: rgba(245, 158, 11, 0.35);

  --color-red: #EF4444;
  --color-red-light: #F87171;
  --color-red-dark: #DC2626;
  --color-red-bg: rgba(239, 68, 68, 0.12);
  --color-red-border: rgba(239, 68, 68, 0.35);

  --color-blue: #3B82F6;
  --color-blue-light: #60A5FA;
  --color-blue-dark: #2563EB;
  --color-blue-bg: rgba(59, 130, 246, 0.12);
  --color-blue-border: rgba(59, 130, 246, 0.35);

  --color-purple: #A855F7;
  --color-purple-light: #C084FC;
  --color-purple-dark: #9333EA;
  --color-purple-bg: rgba(168, 85, 247, 0.12);
  --color-purple-border: rgba(168, 85, 247, 0.35);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.35), 0 4px 6px -4px rgba(0, 0, 0, 0.25);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.55);
  --shadow-glow-gold: 0 0 20px rgba(216, 178, 92, 0.15);
  --shadow-glow-blue: 0 0 20px rgba(59, 130, 246, 0.15);

  --body-gradient: 
    radial-gradient(ellipse 1200px 700px at 15% -10%, rgba(102, 163, 255, 0.12), transparent 55%),
    radial-gradient(ellipse 1000px 650px at 85% 10%, rgba(216, 178, 92, 0.10), transparent 55%),
    radial-gradient(ellipse 800px 500px at 50% 100%, rgba(34, 197, 94, 0.06), transparent 55%),
    linear-gradient(180deg, var(--color-bg-0), var(--color-bg-1));

  --glass-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  --panel-bg: rgba(0, 0, 0, 0.20);
  
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
}

[data-theme="light"] {
  --theme-name: "light";
  
  --color-bg-0: #E8EDF5;
  --color-bg-1: #F1F5F9;
  --color-bg-2: #F8FAFC;
  --color-bg-card: rgba(255, 255, 255, 0.85);
  --color-bg-card-hover: rgba(255, 255, 255, 0.95);
  --color-bg-elevated: rgba(255, 255, 255, 0.90);
  --color-bg-overlay: rgba(0, 0, 0, 0.45);
  --color-bg-input: rgba(255, 255, 255, 0.75);
  
  --sidebar-bg: linear-gradient(180deg, #FFFFFF, #F1F5F9);
  --topbar-bg: rgba(255, 255, 255, 0.92);
  --hero-card-bg: linear-gradient(135deg, rgba(184, 150, 44, 0.10) 0%, rgba(255, 255, 255, 0.95) 100%);
  --quickstart-bg: linear-gradient(135deg, rgba(184, 150, 44, 0.08) 0%, rgba(184, 150, 44, 0.02) 100%);
  
  --nav-cta-bg: linear-gradient(180deg, rgba(184, 150, 44, 0.15), rgba(184, 150, 44, 0.05));
  --nav-cta-bg-hover: linear-gradient(180deg, rgba(184, 150, 44, 0.22), rgba(184, 150, 44, 0.08));
  --nav-blue-bg: linear-gradient(180deg, rgba(37, 99, 235, 0.12), rgba(37, 99, 235, 0.04));
  --nav-blue-bg-hover: linear-gradient(180deg, rgba(37, 99, 235, 0.18), rgba(37, 99, 235, 0.06));
  --nav-purple-bg: linear-gradient(180deg, rgba(147, 51, 234, 0.12), rgba(147, 51, 234, 0.04));
  --nav-purple-bg-hover: linear-gradient(180deg, rgba(147, 51, 234, 0.18), rgba(147, 51, 234, 0.06));
  
  --btn-gold-gradient: linear-gradient(135deg, #B8962C 0%, #9A7A1A 100%);
  --btn-gold-text: #FFFFFF;
  --shadow-gold: 0 4px 20px rgba(184, 150, 44, 0.25);
  --shadow-gold-hover: 0 8px 30px rgba(184, 150, 44, 0.35);
  --shadow-glow-gold: 0 0 20px rgba(184, 150, 44, 0.5);

  --color-border: rgba(0, 0, 0, 0.12);
  --color-border-subtle: rgba(0, 0, 0, 0.06);
  --color-border-strong: rgba(0, 0, 0, 0.20);

  --color-text: #1E293B;
  --color-text-primary: #1E293B;
  --color-text-secondary: rgba(30, 41, 59, 0.75);
  --color-text-muted: rgba(30, 41, 59, 0.55);
  --color-text-disabled: rgba(30, 41, 59, 0.35);
  --color-text-inverse: #F8FAFC;

  --color-gold: #B8962C;
  --color-gold-light: #D8B25C;
  --color-gold-dark: #8B7320;
  --color-gold-bg: rgba(184, 150, 44, 0.12);
  --color-gold-border: rgba(184, 150, 44, 0.35);

  --color-emerald: #16A34A;
  --color-emerald-light: #22C55E;
  --color-emerald-dark: #15803D;
  --color-emerald-bg: rgba(22, 163, 74, 0.12);
  --color-emerald-border: rgba(22, 163, 74, 0.35);

  --color-amber: #D97706;
  --color-amber-light: #F59E0B;
  --color-amber-dark: #B45309;
  --color-amber-bg: rgba(217, 119, 6, 0.12);
  --color-amber-border: rgba(217, 119, 6, 0.35);

  --color-red: #DC2626;
  --color-red-light: #EF4444;
  --color-red-dark: #B91C1C;
  --color-red-bg: rgba(220, 38, 38, 0.12);
  --color-red-border: rgba(220, 38, 38, 0.35);

  --color-blue: #2563EB;
  --color-blue-light: #3B82F6;
  --color-blue-dark: #1D4ED8;
  --color-blue-bg: rgba(37, 99, 235, 0.12);
  --color-blue-border: rgba(37, 99, 235, 0.35);

  --color-purple: #9333EA;
  --color-purple-light: #A855F7;
  --color-purple-dark: #7C3AED;
  --color-purple-bg: rgba(147, 51, 234, 0.12);
  --color-purple-border: rgba(147, 51, 234, 0.35);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.10), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.12), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.10);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.20);
  --shadow-glow-gold: 0 0 20px rgba(184, 150, 44, 0.20);
  --shadow-glow-blue: 0 0 20px rgba(37, 99, 235, 0.20);

  --body-gradient: 
    radial-gradient(ellipse 1200px 700px at 15% -10%, rgba(59, 130, 246, 0.08), transparent 55%),
    radial-gradient(ellipse 1000px 650px at 85% 10%, rgba(184, 150, 44, 0.06), transparent 55%),
    radial-gradient(ellipse 800px 500px at 50% 100%, rgba(22, 163, 74, 0.04), transparent 55%),
    linear-gradient(180deg, var(--color-bg-0), var(--color-bg-1));

  --glass-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0.55));
  --panel-bg: rgba(255, 255, 255, 0.50);
  
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
}

[data-theme="very-light"] {
  --theme-name: "very-light";
  
  --color-bg-0: #FAFBFC;
  --color-bg-1: #FFFFFF;
  --color-bg-2: #FFFFFF;
  --color-bg-card: rgba(255, 255, 255, 1);
  --color-bg-card-hover: rgba(248, 250, 252, 1);
  --color-bg-elevated: rgba(255, 255, 255, 1);
  --color-bg-overlay: rgba(0, 0, 0, 0.35);
  --color-bg-input: rgba(248, 250, 252, 1);
  
  --sidebar-bg: linear-gradient(180deg, #FFFFFF, #FAFBFC);
  --topbar-bg: rgba(255, 255, 255, 0.98);
  --hero-card-bg: linear-gradient(135deg, rgba(146, 112, 12, 0.06) 0%, rgba(255, 255, 255, 1) 100%);
  --quickstart-bg: linear-gradient(135deg, rgba(146, 112, 12, 0.05) 0%, rgba(146, 112, 12, 0.01) 100%);
  
  --nav-cta-bg: linear-gradient(180deg, rgba(146, 112, 12, 0.12), rgba(146, 112, 12, 0.03));
  --nav-cta-bg-hover: linear-gradient(180deg, rgba(146, 112, 12, 0.18), rgba(146, 112, 12, 0.05));
  --nav-blue-bg: linear-gradient(180deg, rgba(37, 99, 235, 0.10), rgba(37, 99, 235, 0.02));
  --nav-blue-bg-hover: linear-gradient(180deg, rgba(37, 99, 235, 0.15), rgba(37, 99, 235, 0.04));
  --nav-purple-bg: linear-gradient(180deg, rgba(147, 51, 234, 0.10), rgba(147, 51, 234, 0.02));
  --nav-purple-bg-hover: linear-gradient(180deg, rgba(147, 51, 234, 0.15), rgba(147, 51, 234, 0.04));
  
  --btn-gold-gradient: linear-gradient(135deg, #92700C 0%, #7A5D0A 100%);
  --btn-gold-text: #FFFFFF;
  --shadow-gold: 0 4px 20px rgba(146, 112, 12, 0.20);
  --shadow-gold-hover: 0 8px 30px rgba(146, 112, 12, 0.30);
  --shadow-glow-gold: 0 0 20px rgba(146, 112, 12, 0.4);

  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-subtle: rgba(0, 0, 0, 0.04);
  --color-border-strong: rgba(0, 0, 0, 0.15);

  --color-text: #0F172A;
  --color-text-primary: #0F172A;
  --color-text-secondary: rgba(15, 23, 42, 0.72);
  --color-text-muted: rgba(15, 23, 42, 0.52);
  --color-text-disabled: rgba(15, 23, 42, 0.32);
  --color-text-inverse: #FFFFFF;

  --color-gold: #92700C;
  --color-gold-light: #B8962C;
  --color-gold-dark: #6B5409;
  --color-gold-bg: rgba(146, 112, 12, 0.08);
  --color-gold-border: rgba(146, 112, 12, 0.25);

  --color-emerald: #15803D;
  --color-emerald-light: #16A34A;
  --color-emerald-dark: #166534;
  --color-emerald-bg: rgba(21, 128, 61, 0.08);
  --color-emerald-border: rgba(21, 128, 61, 0.25);

  --color-amber: #B45309;
  --color-amber-light: #D97706;
  --color-amber-dark: #92400E;
  --color-amber-bg: rgba(180, 83, 9, 0.08);
  --color-amber-border: rgba(180, 83, 9, 0.25);

  --color-red: #B91C1C;
  --color-red-light: #DC2626;
  --color-red-dark: #991B1B;
  --color-red-bg: rgba(185, 28, 28, 0.08);
  --color-red-border: rgba(185, 28, 28, 0.25);

  --color-blue: #1D4ED8;
  --color-blue-light: #2563EB;
  --color-blue-dark: #1E40AF;
  --color-blue-bg: rgba(29, 78, 216, 0.08);
  --color-blue-border: rgba(29, 78, 216, 0.25);

  --color-purple: #7C3AED;
  --color-purple-light: #9333EA;
  --color-purple-dark: #6D28D9;
  --color-purple-bg: rgba(124, 58, 237, 0.08);
  --color-purple-border: rgba(124, 58, 237, 0.25);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.10), 0 8px 10px -6px rgba(0, 0, 0, 0.06);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  --shadow-glow-gold: 0 0 20px rgba(146, 112, 12, 0.15);
  --shadow-glow-blue: 0 0 20px rgba(29, 78, 216, 0.15);

  --body-gradient: 
    radial-gradient(ellipse 1200px 700px at 15% -10%, rgba(29, 78, 216, 0.04), transparent 55%),
    radial-gradient(ellipse 1000px 650px at 85% 10%, rgba(146, 112, 12, 0.03), transparent 55%),
    radial-gradient(ellipse 800px 500px at 50% 100%, rgba(21, 128, 61, 0.02), transparent 55%),
    linear-gradient(180deg, var(--color-bg-0), var(--color-bg-1));

  --glass-gradient: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(248, 250, 252, 1));
  --panel-bg: rgba(248, 250, 252, 1);
  
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230F172A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
}

body {
  background: var(--body-gradient);
  background-attachment: fixed;
  color: var(--color-text-primary);
  transition: background 0.3s ease, color 0.3s ease;
}

.glass {
  background: var(--glass-gradient);
  border: 1px solid var(--color-border);
}

.card {
  background: var(--glass-gradient);
  border: 1px solid var(--color-border);
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--color-border);
}

.input {
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.select {
  background-image: var(--select-arrow);
}

.theme-switcher {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.theme-switcher__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.theme-switcher__btn:hover {
  background: var(--color-bg-card-hover);
  color: var(--color-text-primary);
}

.theme-switcher__btn.active {
  background: var(--color-gold-bg);
  color: var(--color-gold);
  border: 1px solid var(--color-gold-border);
}

.theme-switcher__btn svg {
  width: 18px;
  height: 18px;
}

.theme-label {
  display: none;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0 8px;
}

@media (min-width: 640px) {
  .theme-label {
    display: block;
  }
}

.theme-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-muted);
}

.theme-indicator::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold);
}

[data-theme="dark"] .theme-indicator::before {
  background: #3B82F6;
}

[data-theme="light"] .theme-indicator::before {
  background: #F59E0B;
}

[data-theme="very-light"] .theme-indicator::before {
  background: #22C55E;
}