/* 
    ============================================
    KING OF THE RING 2.0 - Estilos Principales
    ============================================
    Diseño: Dark mode, minimalista, premium
    Inspiración: Rockstar Games (cinematográfico) + Apple (minimalismo)
*/

/* 
    ============================================
    VARIABLES CSS (Custom Properties)
    ============================================
    Centraliza colores y valores para fácil mantenimiento
*/
:root {
    /* Colores principales - Dark mode */
    --color-bg-primary: #0a0a0a;        /* Fondo principal (casi negro) */
    --color-bg-secondary: #111111;      /* Fondo secundario */
    --color-bg-card: #1a1a1a;           /* Fondo de tarjetas */
    --color-bg-overlay: rgba(0, 0, 0, 0.7); /* Overlay oscuro */
    
    /* Colores de texto */
    --color-text-primary: #ffffff;      /* Texto principal (blanco) */
    --color-text-secondary: #b0b0b0;    /* Texto secundario (gris claro) */
    --color-text-muted: #666666;        /* Texto deshabilitado (gris) */
    
    /* Colores de acento */
    --color-accent: #ff3333;            /* Rojo intenso (boxeo) */
    --color-accent-hover: #ff5555;      /* Rojo más claro al hover */
    --color-accent-secondary: #ffaa00;  /* Naranja/dorado (premium) */
    
    /* Tipografía */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Oswald', 'Arial Black', sans-serif; /* Para títulos grandes */
    
    /* 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 */
    --font-size-5xl: 3.5rem;    /* 56px */
    --font-size-6xl: 5rem;      /* 80px */
    
    /* Espaciado */
    --spacing-xs: 0.5rem;       /* 8px */
    --spacing-sm: 1rem;         /* 16px */
    --spacing-md: 1.5rem;       /* 24px */
    --spacing-lg: 2rem;         /* 32px */
    --spacing-xl: 3rem;         /* 48px */
    --spacing-2xl: 4rem;        /* 64px */
    --spacing-3xl: 6rem;        /* 96px */
    
    /* Bordes y sombras */
    --border-radius: 8px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(255, 51, 51, 0.3); /* Efecto glow rojo */
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-base: 1;
    --z-overlay: 10;
    --z-modal: 100;
    --z-header: 50;
}

/* 
    ============================================
    RESET Y BASE
    ============================================
*/
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    /* Scroll suave para mejor UX */
    scroll-behavior: smooth;
    /* Prevenir scroll horizontal */
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    /* Mejora renderizado de fuentes */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Prevenir selección de texto en elementos decorativos */
    user-select: none;
}

/* Permitir selección en texto de contenido */
p, h1, h2, h3, h4, h5, h6, span, a {
    user-select: text;
}

/* 
    ============================================
    CONTENEDOR PRINCIPAL
    ============================================
*/
.scroll-container {
    width: 100%;
    min-height: 100vh;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 
    ============================================
    HERO SECTION
    ============================================
    Sección principal con impacto visual máximo
*/
.hero {
    position: relative;
    width: 100%;
    height: 100vh; /* Altura completa de la ventana */
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Fondo del hero */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-base);
}

/* Placeholder para imagen de fondo */
.hero-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--color-text-muted);
}

.placeholder-text {
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    text-align: center;
    font-weight: 600;
    letter-spacing: 2px;
}

/* Cuando se agregue la imagen real, usar esto: */
/*
.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}
*/

/* Overlay oscuro para mejorar legibilidad */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.4) 0%,
        rgba(0, 0, 0, 0.6) 50%,
        rgba(0, 0, 0, 0.8) 100%
    );
    z-index: calc(var(--z-base) + 1);
}

/* Contenido del hero */
.hero-content {
    position: relative;
    z-index: calc(var(--z-base) + 2);
    text-align: center;
    padding: var(--spacing-lg);
    max-width: 900px;
}

/* Título principal */
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 6rem); /* Responsive: mínimo 3rem, máximo 6rem */
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 4px;
}

.title-line {
    display: block;
}

.title-accent {
    color: var(--color-accent);
    text-shadow: 0 0 30px rgba(255, 51, 51, 0.5);
}

.title-version {
    font-size: 0.4em;
    color: var(--color-text-secondary);
    letter-spacing: 8px;
    margin-top: var(--spacing-xs);
}

/* Subtítulo */
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
    letter-spacing: 2px;
}

/* Botones CTA del hero */
.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

/* Indicador de scroll */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: calc(var(--z-base) + 2);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    letter-spacing: 2px;
}

.scroll-arrow {
    width: 2px;
    height: 30px;
    background: var(--color-text-secondary);
    margin: var(--spacing-xs) auto 0;
    position: relative;
    animation: scroll-bounce 2s infinite;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--color-text-secondary);
    border-bottom: 2px solid var(--color-text-secondary);
    transform: translateX(-50%) rotate(45deg);
}

@keyframes scroll-bounce {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(10px); opacity: 0.5; }
}

/* 
    ============================================
    BOTONES
    ============================================
    Estilo premium para CTAs
*/
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

/* Botón primario (rojo) */
.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Botón secundario (outline) */
.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-text-primary);
}

.btn-secondary:hover {
    background-color: var(--color-text-primary);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
}

/* Botón grande */
.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* 
    ============================================
    SECCIONES GENERALES
    ============================================
*/
section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 
    ============================================
    INFORMACIÓN DEL EVENTO
    ============================================
*/
.event-info {
    background-color: var(--color-bg-secondary);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.info-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.info-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.info-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.info-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.info-time,
.info-address,
.info-format {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--color-text-primary);
    font-weight: 600;
}

/* 
    ============================================
    CATEGORÍAS
    ============================================
*/
.categories {
    background-color: var(--color-bg-primary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.category-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    border: 2px solid transparent;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-secondary));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.category-card:hover::before {
    transform: scaleX(1);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.category-weight {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.category-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.category-desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* 
    ============================================
    LUCHADORES
    ============================================
*/
.fighters {
    background-color: var(--color-bg-secondary);
}

.fighters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.fighter-card {
    text-align: center;
}

.fighter-image {
    width: 100%;
    aspect-ratio: 1; /* Cuadrado */
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    background-color: var(--color-bg-card);
    border: 2px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Cuando se agregue la imagen real: */

.fighter-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}


.fighter-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.fighter-category {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* 
    ============================================
    SPONSORS
    ============================================
*/
.sponsors {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-2xl) 0;
}

.sponsors-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    width: 100%;
}

.sponsor-item {
    opacity: 0.7;
    transition: opacity var(--transition-base);
    flex-shrink: 0;
    display: block;
    position: relative;
}

.sponsor-item:hover {
    opacity: 1;
}

.sponsor-logo {
    width: 200px;
    height: 100px;
    min-width: 200px;
    min-height: 100px;
    max-width: 200px;
    max-height: 100px;
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    padding: var(--spacing-sm);
    box-sizing: border-box;
    position: relative;
}

.sponsor-logo img {
    max-width: calc(100% - var(--spacing-sm) * 2);
    max-height: calc(100% - var(--spacing-sm) * 2);
    width: auto;
    height: auto;
    object-fit: contain;
    object-position: center;
    display: block;
    margin: 0 auto;
}

/* 
    ============================================
    CTA FINAL
    ============================================
*/
.cta-final {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.cta-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* 
    ============================================
    FOOTER
    ============================================
*/
.footer {
    background-color: var(--color-bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-section {
    text-align: left;
}

.footer-title {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.footer-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.footer-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.8;
}

.footer-link {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-accent-hover);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.social-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.social-link:hover {
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

/* 
    ============================================
    RESPONSIVE DESIGN
    ============================================
*/
@media (max-width: 768px) {
    .hero {
        min-height: 500px;
    }
    
    .hero-cta,
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .info-grid,
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .fighters-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-section {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .sponsor-logo {
        width: 150px;
        height: 75px;
        min-width: 150px;
        min-height: 75px;
        max-width: 150px;
        max-height: 75px;
    }
    
    .sponsors-grid {
        gap: var(--spacing-md);
    }
}

/* 
    ============================================
    UTILIDADES
    ============================================
*/
.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;
}

/* Estados de carga */
.loading {
    opacity: 0.5;
    pointer-events: none;
}