/**
 * FUNO Design System - Design Tokens
 * Fundación del sistema de diseño unificado
 * Fase 1: Consolidación
 */

:root {
    /* ============================================
     COLOR SYSTEM - Paleta Principal
     ============================================ */

    /* Primary - Naranja FUNO (color de marca) */
    --color-primary-50: #fff7ed;
    --color-primary-100: #ffedd5;
    --color-primary-200: #fed7aa;
    --color-primary-300: #fdba74;
    --color-primary-400: #fb923c;
    --color-primary-500: #f97316;
    /* Brand color */
    --color-primary-600: #ea580c;
    --color-primary-700: #c2410c;
    --color-primary-800: #9a3412;
    --color-primary-900: #7c2d12;
    --color-primary-950: #431407;

    /* Neutral - Grises para UI */
    --color-neutral-50: #fafafa;
    --color-neutral-100: #f5f5f5;
    --color-neutral-200: #e5e5e5;
    --color-neutral-300: #d4d4d4;
    --color-neutral-400: #a3a3a3;
    --color-neutral-500: #737373;
    --color-neutral-600: #525252;
    --color-neutral-700: #404040;
    --color-neutral-800: #262626;
    --color-neutral-900: #171717;
    --color-neutral-950: #0a0a0a;

    /* Semantic Colors */
    --color-success-50: #f0fdf4;
    --color-success-500: #22c55e;
    --color-success-600: #16a34a;
    --color-success-700: #15803d;

    --color-error-50: #fef2f2;
    --color-error-500: #ef4444;
    --color-error-600: #dc2626;
    --color-error-700: #b91c1c;

    --color-warning-50: #fffbeb;
    --color-warning-500: #f59e0b;
    --color-warning-600: #d97706;
    --color-warning-700: #b45309;

    --color-info-50: #eff6ff;
    --color-info-500: #3b82f6;
    --color-info-600: #2563eb;
    --color-info-700: #1d4ed8;

    /* Alpha Color Utilities - For overlays and subtle effects */
    --color-primary-alpha-5: rgba(249, 115, 22, 0.05);
    --color-primary-alpha-10: rgba(249, 115, 22, 0.1);
    --color-primary-alpha-20: rgba(249, 115, 22, 0.2);
    --color-primary-alpha-50: rgba(249, 115, 22, 0.5);

    --color-info-alpha-5: rgba(37, 99, 235, 0.05);
    --color-info-alpha-10: rgba(37, 99, 235, 0.1);
    --color-info-alpha-20: rgba(37, 99, 235, 0.2);
    --color-info-alpha-50: rgba(37, 99, 235, 0.5);

    /* ============================================
     TYPOGRAPHY SYSTEM
     ============================================ */

    /* Font Families */
    --font-primary: "Gotham", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-secondary: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "SF Mono", "Monaco", "Inconsolata", "Fira Code", monospace;

    /* Font Sizes - Escala tipográfica clara */
    --text-xs: 0.75rem;
    /* 12px */
    --text-sm: 0.875rem;
    /* 14px */
    --text-base: 1rem;
    /* 16px */
    --text-lg: 1.125rem;
    /* 18px */
    --text-xl: 1.25rem;
    /* 20px */
    --text-2xl: 1.5rem;
    /* 24px */
    --text-3xl: 1.875rem;
    /* 30px */
    --text-4xl: 2.25rem;
    /* 36px */
    --text-5xl: 3rem;
    /* 48px */
    --text-6xl: 3.75rem;
    /* 60px */

    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* ============================================
     SPACING SYSTEM - Escala 4px base
     ============================================ */
    --space-0: 0;
    --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 */
    --space-32: 8rem;
    /* 128px */

    /* ============================================
     BORDER RADIUS
     ============================================ */
    --radius-none: 0;
    --radius-sm: 0.125rem;
    /* 2px */
    --radius-base: 0.25rem;
    /* 4px */
    --radius-md: 0.375rem;
    /* 6px */
    --radius-lg: 0.5rem;
    /* 8px */
    --radius-xl: 0.75rem;
    /* 12px */
    --radius-2xl: 1rem;
    /* 16px */
    --radius-3xl: 1.5rem;
    /* 24px */
    --radius-full: 9999px;

    /* ============================================
     SHADOWS - Sistema de elevación
     ============================================ */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-base: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);

    /* ============================================
     TRANSITIONS & ANIMATIONS
     Durations optimizadas para UX y performance
     ============================================ */

    /* Transition Durations */
    --transition-fast: 100ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Easing Functions */
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* Microinteraction Animations */
    --anim-fade-in: fade-in var(--transition-base) var(--ease-out);
    --anim-slide-up: slide-up var(--transition-base) var(--ease-out);
    --anim-slide-down: slide-down var(--transition-base) var(--ease-out);
    --anim-scale-in: scale-in var(--transition-fast) var(--ease-bounce);
    --anim-shake: shake 300ms var(--ease-in-out);

    /* ============================================
     Z-INDEX SYSTEM
     ============================================ */
    --z-base: 0;
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;

    /* ============================================
     SEMANTIC TOKENS - Contextuales
     ============================================ */

    /* Backgrounds */
    --bg-primary: white;
    --bg-secondary: var(--color-neutral-50);
    --bg-tertiary: var(--color-neutral-100);
    --bg-inverse: var(--color-neutral-900);
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* Text Colors */
    --text-primary: var(--color-neutral-900);
    --text-secondary: var(--color-neutral-600);
    --text-tertiary: var(--color-neutral-500);
    --text-inverse: white;
    --text-link: var(--color-primary-600);
    --text-link-hover: var(--color-primary-700);

    /* Borders */
    --border-color: var(--color-neutral-200);
    --border-color-hover: var(--color-neutral-300);
    --border-color-focus: var(--color-primary-500);

    /* Gradients - Reusable across application */
    --gradient-primary: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-700) 100%);
    --gradient-info: linear-gradient(135deg, var(--color-info-600) 0%, var(--color-info-700) 100%);
    --gradient-success: linear-gradient(135deg, var(--color-success-600) 0%, var(--color-success-700) 100%);
    --gradient-neutral: linear-gradient(135deg, var(--color-neutral-500) 0%, var(--color-neutral-600) 100%);
    --gradient-bg-subtle: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --gradient-info-subtle: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(37, 99, 235, 0.05) 100%);

    /* Interactive States */
    --state-hover: var(--color-neutral-100);
    --state-active: var(--color-neutral-200);
    --state-disabled: var(--color-neutral-300);
    --state-focus-ring: 0 0 0 3px rgba(249, 115, 22, 0.1);

    /* Focus States - WCAG 2.1 AA Compliant */
    --focus-ring-width: 2px;
    --focus-ring-offset: 2px;
    --focus-ring-color: var(--color-primary-500);
    --focus-ring: 0 0 0 var(--focus-ring-offset) var(--bg-primary), 0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color);
    --focus-ring-inset: inset 0 0 0 var(--focus-ring-width) var(--focus-ring-color);

    /* Skeleton Loading States */
    --skeleton-bg: var(--color-neutral-200);
    --skeleton-shimmer: linear-gradient(90deg, transparent, var(--color-neutral-100), transparent);
    --skeleton-animation: skeleton-pulse 1.5s ease-in-out infinite;

    /* ============================================
     COMPONENT-SPECIFIC TOKENS
     ============================================ */

    /* Buttons */
    --btn-height-sm: 2rem;
    /* 32px */
    --btn-height-base: 2.5rem;
    /* 40px */
    --btn-height-lg: 3rem;
    /* 48px */
    --btn-padding-x-sm: var(--space-3);
    --btn-padding-x-base: var(--space-4);
    --btn-padding-x-lg: var(--space-6);

    /* Inputs */
    --input-height-sm: 2rem;
    /* 32px */
    --input-height-base: 2.5rem;
    /* 40px */
    --input-height-lg: 3rem;
    /* 48px */
    --input-padding-x: var(--space-3);
    --input-border-width: 1px;
    --input-border-radius: var(--radius-md);

    /* Cards */
    --card-padding: var(--space-6);
    --card-border-radius: var(--radius-xl);
    --card-shadow: var(--shadow-base);
    --card-shadow-hover: var(--shadow-md);
}

/* ============================================
   DARK MODE SUPPORT (Future)
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        /* Se implementará en fases posteriores */
    }
}

/* ============================================
   ACCESSIBILITY - High Contrast Mode
   ============================================ */
@media (prefers-contrast: high) {
    :root {
        --border-color: var(--color-neutral-800);
        --text-secondary: var(--color-neutral-800);
    }
}

/* ============================================
   ANIMATION KEYFRAMES
   ============================================ */

/* Fade Animations */
@keyframes fade-in {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Slide Animations */
@keyframes slide-up {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slide-down {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scale Animation */
@keyframes scale-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Shake Animation - For error states */
@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-4px);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(4px);
    }
}

/* Skeleton Loading Animation */
@keyframes skeleton-pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes skeleton-shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    :root {
        --transition-fast: 0ms;
        --transition-base: 0ms;
        --transition-slow: 0ms;
        --transition-slower: 0ms;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}