/* ========================================
   VARIABLES CSS - Sistema de diseño
   ======================================== */

:root {
    /* ===== COLORES PRINCIPALES ===== */
    --color-primary: #4f46e5;          /* Índigo principal */
    --color-primary-dark: #4338ca;     /* Índigo oscuro (hover) */
    --color-primary-light: #6366f1;    /* Índigo claro */

    /* ===== COLORES DE ESTADO ===== */
    --color-danger: #ef4444;           /* Rojo */
    --color-danger-dark: #dc2626;      /* Rojo oscuro */
    --color-success: #10b981;          /* Verde */
    --color-warning: #f59e0b;          /* Ámbar */

    /* ===== GRISES - MODO CLARO ===== */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* ===== GRISES - MODO OSCURO ===== */
    --color-dark-bg: #2a2a3e;          /* Fondo principal oscuro */
    --color-dark-surface: #3a3a4e;     /* Superficie elevada oscura */
    --color-dark-border: #4a4a5e;      /* Bordes en oscuro */
    --color-dark-text: #e0e0e0;        /* Texto en oscuro */

    /* ===== COLORES SEMÁNTICOS ===== */
    --color-background: #ffffff;
    --color-surface: var(--color-gray-50);
    --color-text-primary: #111827;
    --color-text-secondary: #6b7280;
    --color-border: #e5e7eb;
    --color-shadow: rgba(0, 0, 0, 0.1);

    /* ===== ESPACIADOS ===== */
    --spacing-xs: 0.25rem;    /* 4px */
    --spacing-sm: 0.5rem;     /* 8px */
    --spacing-md: 1rem;       /* 16px */
    --spacing-lg: 1.5rem;     /* 24px */
    --spacing-xl: 2rem;       /* 32px */
    --spacing-2xl: 3rem;      /* 48px */

    /* ===== RADIOS DE BORDE ===== */
    --radius-sm: 0.25rem;     /* 4px */
    --radius-md: 0.5rem;      /* 8px */
    --radius-lg: 0.75rem;     /* 12px */
    --radius-xl: 1rem;        /* 16px */
    --radius-full: 9999px;    /* Circular */

    /* ===== SOMBRAS ===== */
    --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);

    /* ===== TRANSICIONES ===== */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* ===== TIPOGRAFÍA ===== */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --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 */

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

    /* ===== ESPECÍFICOS DE ASIENTOS ===== */
    --seat-size: 60px;
    --seat-gap: 8px;
    --aisle-width: 40px;

    /* ===== OCUPACIÓN (colores) ===== */
    --occupancy-low: #10b981;     /* Verde */
    --occupancy-mid: #f59e0b;     /* Ámbar */
    --occupancy-high: #ef4444;    /* Rojo */
}

/* ========================================
   MODO OSCURO - Sobrescribir variables
   ======================================== */

.dark-mode {
    --color-background: var(--color-dark-bg);
    --color-surface: var(--color-dark-surface);
    --color-text-primary: var(--color-dark-text);
    --color-text-secondary: #a0a0b0;
    --color-border: var(--color-dark-border);
    --color-shadow: rgba(0, 0, 0, 0.3);
}