/**
 * DESIGN SYSTEM - La Belle Bretagne
 * Système de design unifié pour une expérience cohérente
 */

:root {
    /* ========================================
       PALETTE DE COULEURS
       ======================================== */

    /* Couleurs primaires - Bleu Bretagne */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;
    --color-primary-950: #172554;

    /* Couleurs secondaires - Océan */
    --color-secondary-50: #f0f9ff;
    --color-secondary-100: #e0f2fe;
    --color-secondary-200: #bae6fd;
    --color-secondary-300: #7dd3fc;
    --color-secondary-400: #38bdf8;
    --color-secondary-500: #0ea5e9;
    --color-secondary-600: #0284c7;
    --color-secondary-700: #0369a1;
    --color-secondary-800: #075985;
    --color-secondary-900: #0c4a6e;

    /* Couleurs accent - Vert Bretagne */
    --color-accent-50: #f0fdf4;
    --color-accent-100: #dcfce7;
    --color-accent-200: #bbf7d0;
    --color-accent-300: #86efac;
    --color-accent-400: #4ade80;
    --color-accent-500: #22c55e;
    --color-accent-600: #16a34a;
    --color-accent-700: #15803d;
    --color-accent-800: #166534;
    --color-accent-900: #14532d;

    /* 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 sémantiques */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* ========================================
       TYPOGRAPHIE
       ======================================== */

    /* Familles de polices */
    --font-family-base: Inter, "Inter Fallback", system-ui, sans-serif;
    --font-family-heading: Inter, "Inter Fallback", system-ui, sans-serif;

    /* Tailles de police - Scale harmonieuse (1.250 - Major Third) */
    --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-size-6xl: 3.75rem;     /* 60px */
    --font-size-7xl: 4.5rem;      /* 72px */

    /* Poids de police */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;

    /* Hauteurs de ligne */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    --line-height-loose: 2;

    /* Espacement des lettres */
    --letter-spacing-tighter: -0.05em;
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0em;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;

    /* ========================================
       ESPACEMENTS
       ======================================== */

    --spacing-0: 0;
    --spacing-1: 0.25rem;    /* 4px */
    --spacing-2: 0.5rem;     /* 8px */
    --spacing-3: 0.75rem;    /* 12px */
    --spacing-4: 1rem;       /* 16px */
    --spacing-5: 1.25rem;    /* 20px */
    --spacing-6: 1.5rem;     /* 24px */
    --spacing-8: 2rem;       /* 32px */
    --spacing-10: 2.5rem;    /* 40px */
    --spacing-12: 3rem;      /* 48px */
    --spacing-16: 4rem;      /* 64px */
    --spacing-20: 5rem;      /* 80px */
    --spacing-24: 6rem;      /* 96px */
    --spacing-32: 8rem;      /* 128px */

    /* ========================================
       BORDURES ET ARRONDIS
       ======================================== */

    --radius-none: 0;
    --radius-sm: 0.25rem;    /* 4px */
    --radius-base: 0.5rem;   /* 8px */
    --radius-md: 0.75rem;    /* 12px */
    --radius-lg: 1rem;       /* 16px */
    --radius-xl: 1.5rem;     /* 24px */
    --radius-2xl: 2rem;      /* 32px */
    --radius-full: 9999px;

    --border-width-thin: 1px;
    --border-width-base: 2px;
    --border-width-thick: 4px;

    /* ========================================
       OMBRES
       ======================================== */

    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-2xl: 0 35px 60px -15px rgba(0, 0, 0, 0.3);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

    /* Ombres colorées */
    --shadow-primary: 0 10px 25px -5px rgba(30, 58, 138, 0.2);
    --shadow-secondary: 0 10px 25px -5px rgba(59, 130, 246, 0.2);
    --shadow-accent: 0 10px 25px -5px rgba(34, 197, 94, 0.2);

    /* ========================================
       TRANSITIONS
       ======================================== */

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    --transition-ease-in: cubic-bezier(0.4, 0, 1, 1);
    --transition-ease-out: cubic-bezier(0, 0, 0.2, 1);
    --transition-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

    /* ========================================
       Z-INDEX
       ======================================== */

    --z-base: 0;
    --z-dropdown: 1000;
    --z-sticky: 1100;
    --z-fixed: 1200;
    --z-modal-backdrop: 1300;
    --z-modal: 1400;
    --z-popover: 1500;
    --z-tooltip: 1600;

    /* ========================================
       LAYOUT
       ======================================== */

    --container-max-width: 1280px;
    --container-padding: var(--spacing-4);

    /* Breakpoints (pour référence JavaScript) */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;

    /* ========================================
       ANIMATIONS
       ======================================== */

    --animation-spin: spin 1s linear infinite;
    --animation-ping: ping 1s cubic-bezier(0, 0, 0.2, 1) infinite;
    --animation-pulse: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    --animation-bounce: bounce 1s infinite;
}

/* ========================================
   ANIMATIONS KEYFRAMES
   ======================================== */

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes ping {
    75%, 100% {
        transform: scale(2);
        opacity: 0;
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(-25%);
        animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
    }
    50% {
        transform: translateY(0);
        animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ========================================
   DARK MODE (optionnel)
   ======================================== */

@media (prefers-color-scheme: dark) {
    :root {
        /* Adaptation automatique des couleurs pour le mode sombre */
        --color-gray-50: #0f172a;
        --color-gray-100: #1e293b;
        --color-gray-900: #f8fafc;
    }
}

/* ========================================
   UTILITIES
   ======================================== */

/* Classes utilitaires pour le système de design */
.text-primary { color: var(--color-primary-600); }
.text-secondary { color: var(--color-secondary-600); }
.text-accent { color: var(--color-accent-600); }
.text-gray { color: var(--color-gray-600); }

.bg-primary { background-color: var(--color-primary-600); }
.bg-secondary { background-color: var(--color-secondary-600); }
.bg-accent { background-color: var(--color-accent-600); }
.bg-gray { background-color: var(--color-gray-100); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-base { box-shadow: var(--shadow-base); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-base { border-radius: var(--radius-base); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.transition { transition: var(--transition-base); }
.transition-fast { transition: var(--transition-fast); }
.transition-slow { transition: var(--transition-slow); }