/**
 * LexorAI Design System
 * Sistema de diseño consolidado con variables CSS, utilidades y componentes base
 * Versión: 1.0
 * Fecha: 2026-01-27
 */

/* ============================================
   VARIABLES CSS - SISTEMA DE COLORES
   ============================================ */
:root {
    /* Colores Principales */
    --color-primary: #0099dd;
    --color-accent: #0099dd;
    
    /* Colores Semánticos */
    --color-success: #48bc90;
    --color-warning: #ff9900;
    --color-danger: #c7203d;
    --color-info: #0099dd;
    
    /* Skills Colors */
    --color-skill-green: #48bc90;
    --color-skill-orange: #ff9900;
    --color-skill-red: #c7203d;
    --color-skill-purple: #8b5cf6;
    
    /* Texto */
    --color-text: #343a40;
    --color-text-muted: #6c757d;
    --color-text-light: #ecf0f1;
    --color-text-dark: #2c3e50;
    
    /* Backgrounds */
    --color-bg: #f8fafc;
    --color-bg-light: #f7f7f3;
    --color-bg-white: #ffffff;
    --color-bg-dark: #2c3338;
    
    /* Borders */
    --color-border: #e6e6e6;
    --color-border-light: #f0f0f0;
    --color-border-dark: #d0d0d0;
    
    /* Estados de interacción */
    --color-hover-primary: #0088cc;
    --color-hover-success: #3da77d;
    --color-hover-danger: #a31f10;
    --color-hover-bg: #f1f5f9;
    
    /* Opacidades */
    --opacity-disabled: 0.6;
    --opacity-muted: 0.7;
    --opacity-overlay: 0.5;
}

/* ============================================
   ESPACIADO
   ============================================ */
:root {
    --spacing-xs: 0.25rem;      /* 4px */
    --spacing-sm: 0.5rem;       /* 8px */
    --spacing-md: 0.75rem;      /* 12px */
    --spacing-lg: 1rem;         /* 16px */
    --spacing-xl: 1.5rem;       /* 24px */
    --spacing-2xl: 2rem;        /* 32px */
    --spacing-3xl: 3rem;        /* 48px */
}

/* ============================================
   TIPOGRAFÍA
   ============================================ */
:root {
    --font-family-primary: "Open Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    --font-family-code: 'Monaco', 'Courier New', monospace;
    
    /* Tamaños de fuente */
    --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: 2rem;      /* 32px */
    --font-size-4xl: 2.5rem;    /* 40px */
    
    /* Pesos de fuente */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
}

/* ============================================
   BORDER RADIUS - CONSISTENTE
   ============================================ */
:root {
    --radius-none: 0;
    --radius-sm: 0.25rem;       /* 4px */
    --radius-md: 0.5rem;        /* 8px - ESTÁNDAR PARA BOTONES */
    --radius-lg: 0.75rem;       /* 12px */
    --radius-xl: 1rem;          /* 16px */
    --radius-2xl: 1.5rem;       /* 24px */
    --radius-full: 9999px;      /* Círculo completo */
}

/* ============================================
   SOMBRAS
   ============================================ */
:root {
    --shadow-none: none;
    --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 0 rgba(0, 0, 0, 0.06);
    --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);
    
    /* Sombras de enfoque */
    --shadow-focus: 0 0 0 3px rgba(0, 153, 221, 0.25);
    --shadow-focus-danger: 0 0 0 3px rgba(199, 32, 61, 0.25);
}

/* ============================================
   TRANSICIONES
   ============================================ */
:root {
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
    
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
}

/* ============================================
   Z-INDEX
   ============================================ */
:root {
    --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;
}

/* ============================================
   COMPONENTES BASE - BOTONES
   ============================================ */

/* Botón Base */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-normal);
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);  /* ESTANDARIZADO A 8px */
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: var(--opacity-disabled);
    cursor: not-allowed;
}

/* Variantes de botón */
.btn-primary {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-hover-primary);
    border-color: var(--color-hover-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background-color: var(--color-success);
    color: white;
    border-color: var(--color-success);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--color-hover-success);
    border-color: var(--color-hover-success);
}

.btn-danger {
    background-color: var(--color-danger);
    color: white;
    border-color: var(--color-danger);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--color-hover-danger);
    border-color: var(--color-hover-danger);
}

.btn-warning {
    background-color: var(--color-warning);
    color: white;
    border-color: var(--color-warning);
}

.btn-secondary {
    background-color: var(--color-bg);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-hover-bg);
    border-color: var(--color-border-dark);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline-primary:hover:not(:disabled) {
    background-color: rgba(0, 153, 221, 0.1);
    border-color: var(--color-hover-primary);
}

.btn-outline-secondary {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-border-dark);
}

.btn-outline-secondary:hover:not(:disabled) {
    background-color: var(--color-hover-bg);
    border-color: var(--color-border-dark);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-primary);
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    background-color: rgba(0, 153, 221, 0.1);
}

.btn-ghost-primary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: transparent;
}

.btn-ghost-primary:hover:not(:disabled) {
    background-color: rgba(0, 153, 221, 0.1);
}

.btn-ghost-secondary {
    background-color: transparent;
    color: var(--color-text);
    border-color: transparent;
}

.btn-ghost-secondary:hover:not(:disabled) {
    background-color: var(--color-hover-bg);
}

.btn-ghost-danger {
    background-color: transparent;
    color: var(--color-danger);
    border-color: transparent;
}

.btn-ghost-danger:hover:not(:disabled) {
    background-color: rgba(199, 32, 61, 0.1);
}

.btn-accent {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

.btn-accent:hover:not(:disabled) {
    background: linear-gradient(135deg, #5568d3 0%, #65408b 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}


/* Tamaños de botón */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-icon {
    padding: 0;
    width: 36px;
    height: 36px;
}

.btn-icon-sm {
    padding: 0;
    width: 28px;
    height: 28px;
}

.btn-tab {
    border-radius: var(--radius-full);
    padding: var(--spacing-xs) var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.btn-card {
    width: 100%;
    justify-content: flex-start;
    text-align: left;
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-card:hover:not(:disabled) {
    background-color: var(--color-hover-bg);
    border-color: var(--color-border-dark);
}

.btn-link {
    padding: 0;
    background: none;
    border: none;
    color: var(--color-primary);
}

.btn-link:hover:not(:disabled) {
    text-decoration: underline;
}

.btn-block {
    width: 100%;
}

/* ============================================
   COMPONENTES BASE - INPUTS
   ============================================ */

.input,
.select,
.textarea {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);  /* ESTANDARIZADO A 8px */
    transition: all var(--transition-base);
}

.input:focus,
.select:focus,
.textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

.input:disabled,
.select:disabled,
.textarea:disabled {
    background-color: var(--color-bg);
    opacity: var(--opacity-disabled);
    cursor: not-allowed;
}

.input-error {
    border-color: var(--color-danger);
}

.input-error:focus {
    border-color: var(--color-danger);
    box-shadow: var(--shadow-focus-danger);
}

.textarea {
    min-height: 120px;
    resize: vertical;
}

/* ============================================
   COMPONENTES BASE - CARDS
   ============================================ */

.card {
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);  /* Cards usan radius-lg */
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    font-weight: var(--font-weight-semibold);
    background-color: var(--color-bg);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg);
}

/* ============================================
   COMPONENTES BASE - BADGES Y TAGS
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background-color: rgba(0, 153, 221, 0.1);
    color: var(--color-primary);
}

.badge-success {
    background-color: rgba(72, 188, 144, 0.1);
    color: var(--color-success);
}

.badge-warning {
    background-color: rgba(255, 153, 0, 0.1);
    color: var(--color-warning);
}

.badge-danger {
    background-color: rgba(199, 32, 61, 0.1);
    color: var(--color-danger);
}

/* ============================================
   UTILIDADES - SPACING
   ============================================ */

.m-0 { margin: 0; }
.m-xs { margin: var(--spacing-xs); }
.m-sm { margin: var(--spacing-sm); }
.m-md { margin: var(--spacing-md); }
.m-lg { margin: var(--spacing-lg); }
.m-xl { margin: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* ============================================
   UTILIDADES - TEXTO
   ============================================ */

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }

.text-normal { font-weight: var(--font-weight-normal); }
.text-medium { font-weight: var(--font-weight-medium); }
.text-semibold { font-weight: var(--font-weight-semibold); }
.text-bold { font-weight: var(--font-weight-bold); }

.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-muted { color: var(--color-text-muted); }

/* ============================================
   UTILIDADES - LAYOUT
   ============================================ */

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.block { display: block; }
.inline-block { display: inline-block; }
.hidden { display: none; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.justify-center { justify-content: center; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* ============================================
   ANIMACIONES
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(10px);
    }
}

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

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

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

.fade-out {
    animation: fadeOut var(--transition-slow) ease-in;
}

.slide-in-right {
    animation: slideInRight var(--transition-slow) ease-out;
}

.spin {
    animation: spin 1s linear infinite;
}

/* ============================================
   ESTADOS INTERACTIVOS
   ============================================ */

.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.02);
}

/* ============================================
   ACCESIBILIDAD
   ============================================ */

/* Focus visible para navegación por teclado */
.focus-visible:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Ocultar visualmente pero mantener para screen readers */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================
   RESPONSIVE HELPERS
   ============================================ */

.container {
    width: 100%;
    max-width: 1328px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

/* ============================================
   RETROCOMPATIBILIDAD
   Mapeo de variables antiguas a nuevas
   ============================================ */

:root {
    /* Mapeo para backward compatibility */
    --bg: var(--color-bg);
    --border: var(--color-border);
    --muted: var(--color-text-muted);
    --text: var(--color-text);
    --accent: var(--color-primary);
    --skill-g: var(--color-skill-green);
    --skill-o: var(--color-skill-orange);
    --skill-r: var(--color-skill-red);
}