/* ========================================
   DESIGN SYSTEM 2025 - CallMeBack
   Couleurs vives et modernes avec gradients
   ======================================== */

:root {
  /* === COULEURS PRIMAIRES === */
  --color-primary: #4F46E5;
  --color-primary-light: #6366F1;
  --color-primary-dark: #3730A3;
  --color-primary-50: #EEF2FF;
  --color-primary-100: #E0E7FF;
  --color-primary-200: #C7D2FE;
  --color-primary-300: #A5B4FC;
  --color-primary-400: #818CF8;
  --color-primary-500: #6366F1;
  --color-primary-600: #4F46E5;
  --color-primary-700: #4338CA;
  --color-primary-800: #3730A3;
  --color-primary-900: #312E81;

  /* === COULEURS SECONDAIRES === */
  --color-secondary: #8B5CF6;
  --color-secondary-light: #A78BFA;
  --color-secondary-dark: #7C3AED;
  --color-secondary-50: #F3E8FF;
  --color-secondary-100: #E9D5FF;
  --color-secondary-200: #DDD6FE;
  --color-secondary-300: #C4B5FD;
  --color-secondary-400: #A78BFA;
  --color-secondary-500: #8B5CF6;
  --color-secondary-600: #7C3AED;
  --color-secondary-700: #6D28D9;
  --color-secondary-800: #5B21B6;
  --color-secondary-900: #4C1D95;

  /* === COULEURS ACCENT === */
  --color-accent: #06B6D4;
  --color-accent-light: #22D3EE;
  --color-accent-dark: #0891B2;
  --color-accent-50: #ECFEFF;
  --color-accent-100: #CFFAFE;
  --color-accent-200: #A5F3FC;
  --color-accent-300: #67E8F9;
  --color-accent-400: #22D3EE;
  --color-accent-500: #06B6D4;
  --color-accent-600: #0891B2;
  --color-accent-700: #0E7490;
  --color-accent-800: #155E75;
  --color-accent-900: #164E63;

  /* === COULEURS DE STATUT === */
  --color-success: #10B981;
  --color-success-light: #34D399;
  --color-success-dark: #059669;
  --color-success-50: #ECFDF5;
  --color-success-100: #D1FAE5;
  --color-success-200: #A7F3D0;
  --color-success-300: #6EE7B7;
  --color-success-400: #34D399;
  --color-success-500: #10B981;
  --color-success-600: #059669;
  --color-success-700: #047857;
  --color-success-800: #065F46;
  --color-success-900: #064E3B;

  --color-danger: #EF4444;
  --color-danger-light: #F87171;
  --color-danger-dark: #DC2626;
  --color-danger-50: #FEF2F2;
  --color-danger-100: #FEE2E2;
  --color-danger-200: #FECACA;
  --color-danger-300: #FCA5A5;
  --color-danger-400: #F87171;
  --color-danger-500: #EF4444;
  --color-danger-600: #DC2626;
  --color-danger-700: #B91C1C;
  --color-danger-800: #991B1B;
  --color-danger-900: #7F1D1D;

  --color-warning: #F59E0B;
  --color-warning-light: #FBBF24;
  --color-warning-dark: #D97706;
  --color-warning-50: #FFFBEB;
  --color-warning-100: #FEF3C7;
  --color-warning-200: #FDE68A;
  --color-warning-300: #FCD34D;
  --color-warning-400: #FBBF24;
  --color-warning-500: #F59E0B;
  --color-warning-600: #D97706;
  --color-warning-700: #B45309;
  --color-warning-800: #92400E;
  --color-warning-900: #78350F;

  --color-info: #3B82F6;
  --color-info-light: #60A5FA;
  --color-info-dark: #2563EB;
  --color-info-50: #EFF6FF;
  --color-info-100: #DBEAFE;
  --color-info-200: #BFDBFE;
  --color-info-300: #93C5FD;
  --color-info-400: #60A5FA;
  --color-info-500: #3B82F6;
  --color-info-600: #2563EB;
  --color-info-700: #1D4ED8;
  --color-info-800: #1E40AF;
  --color-info-900: #1E3A8A;

  /* === COULEURS NEUTRES === */
  --color-gray-50: #F8FAFC;
  --color-gray-100: #F1F5F9;
  --color-gray-200: #E2E8F0;
  --color-gray-300: #CBD5E1;
  --color-gray-400: #94A3B8;
  --color-gray-500: #64748B;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1E293B;
  --color-gray-900: #0F172A;

  /* === COULEURS DE SURFACE === */
  --color-background: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-surface-elevated: #FFFFFF;
  --color-surface-hover: #F1F5F9;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --color-border-dark: #CBD5E1;

  /* === COULEURS DE TEXTE === */
  --color-text: #0F172A;
  --color-text-muted: #64748B;
  --color-text-light: #94A3B8;
  --color-text-inverse: #FFFFFF;
  --color-text-on-primary: #FFFFFF;
  --color-text-on-secondary: #FFFFFF;

  /* === GRADIENTS MODERNES === */
  --gradient-primary: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
  --gradient-secondary: linear-gradient(135deg, #06B6D4 0%, #8B5CF6 100%);
  --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
  --gradient-success: linear-gradient(135deg, #10B981 0%, #34D399 100%);
  --gradient-danger: linear-gradient(135deg, #EF4444 0%, #F87171 100%);
  --gradient-warning: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
  --gradient-info: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
  
  /* Gradients de fond */
  --gradient-bg-primary: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
  --gradient-bg-secondary: linear-gradient(135deg, #F3E8FF 0%, #E9D5FF 100%);
  --gradient-bg-accent: linear-gradient(135deg, #ECFEFF 0%, #CFFAFE 100%);
  
  /* Gradients glassmorphism */
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  --gradient-glass-dark: linear-gradient(135deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.05) 100%);

  /* === OMBRES COLORÉES === */
  --shadow-primary: 0 4px 14px 0 rgba(79, 70, 229, 0.15);
  --shadow-secondary: 0 4px 14px 0 rgba(139, 92, 246, 0.15);
  --shadow-accent: 0 4px 14px 0 rgba(6, 182, 212, 0.15);
  --shadow-success: 0 4px 14px 0 rgba(16, 185, 129, 0.15);
  --shadow-danger: 0 4px 14px 0 rgba(239, 68, 68, 0.15);
  --shadow-warning: 0 4px 14px 0 rgba(245, 158, 11, 0.15);
  
  /* Ombres standards */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* === RAYONS DE BORDURE === */
  --radius-sm: 0.375rem;    /* 6px */
  --radius-md: 0.5rem;      /* 8px */
  --radius-lg: 0.75rem;     /* 12px */
  --radius-xl: 1rem;        /* 16px */
  --radius-2xl: 1.5rem;     /* 24px */
  --radius-3xl: 2rem;       /* 32px */
  --radius-full: 9999px;

  /* === ESPACEMENTS === */
  --space-1: 0.25rem;       /* 4px */
  --space-2: 0.5rem;        /* 8px */
  --space-3: 0.75rem;       /* 12px */
  --space-4: 1rem;          /* 16px */
  --space-5: 1.25rem;       /* 20px */
  --space-6: 1.5rem;        /* 24px */
  --space-8: 2rem;          /* 32px */
  --space-10: 2.5rem;       /* 40px */
  --space-12: 3rem;         /* 48px */
  --space-16: 4rem;         /* 64px */
  --space-20: 5rem;         /* 80px */
  --space-24: 6rem;         /* 96px */

  /* === TYPOGRAPHIE === */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
  
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;      /* 24px */
  --font-size-3xl: 1.875rem;    /* 30px */
  --font-size-4xl: 2.25rem;     /* 36px */
  --font-size-5xl: 3rem;        /* 48px */
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  --line-height-none: 1;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* === TRANSITIONS === */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  --transition-bounce: 300ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --transition-spring: 400ms cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* === Z-INDEX === */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* === MODE SOMBRE === */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #0F172A;
    --color-surface: #1E293B;
    --color-surface-elevated: #334155;
    --color-surface-hover: #475569;
    --color-border: #334155;
    --color-border-light: #475569;
    --color-border-dark: #1E293B;
    
    --color-text: #F8FAFC;
    --color-text-muted: #94A3B8;
    --color-text-light: #64748B;
    
    --gradient-bg-primary: linear-gradient(135deg, #1E293B 0%, #334155 100%);
    --gradient-bg-secondary: linear-gradient(135deg, #312E81 0%, #4C1D95 100%);
    --gradient-bg-accent: linear-gradient(135deg, #164E63 0%, #155E75 100%);
  }
}

/* === CLASSES UTILITAIRES === */
.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-secondary) !important; }
.text-accent { color: var(--color-accent) !important; }
.text-success { color: var(--color-success) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-info { color: var(--color-info) !important; }

.bg-primary { background-color: var(--color-primary) !important; }
.bg-secondary { background-color: var(--color-secondary) !important; }
.bg-accent { background-color: var(--color-accent) !important; }
.bg-success { background-color: var(--color-success) !important; }
.bg-danger { background-color: var(--color-danger) !important; }
.bg-warning { background-color: var(--color-warning) !important; }
.bg-info { background-color: var(--color-info) !important; }

.bg-gradient-primary { background: var(--gradient-primary) !important; }
.bg-gradient-secondary { background: var(--gradient-secondary) !important; }
.bg-gradient-accent { background: var(--gradient-accent) !important; }
.bg-gradient-success { background: var(--gradient-success) !important; }
.bg-gradient-danger { background: var(--gradient-danger) !important; }
.bg-gradient-warning { background: var(--gradient-warning) !important; }
.bg-gradient-info { background: var(--gradient-info) !important; }

.border-primary { border-color: var(--color-primary) !important; }
.border-secondary { border-color: var(--color-secondary) !important; }
.border-accent { border-color: var(--color-accent) !important; }
.border-success { border-color: var(--color-success) !important; }
.border-danger { border-color: var(--color-danger) !important; }
.border-warning { border-color: var(--color-warning) !important; }
.border-info { border-color: var(--color-info) !important; }

.shadow-primary { box-shadow: var(--shadow-primary) !important; }
.shadow-secondary { box-shadow: var(--shadow-secondary) !important; }
.shadow-accent { box-shadow: var(--shadow-accent) !important; }
.shadow-success { box-shadow: var(--shadow-success) !important; }
.shadow-danger { box-shadow: var(--shadow-danger) !important; }
.shadow-warning { box-shadow: var(--shadow-warning) !important; }
.shadow-info { box-shadow: var(--shadow-info) !important; }