/* ============================================
   AI RANKING HUB - ESTILOS PRINCIPALES
   Variables, reset y estilos base
   ============================================ */

:root {
    /* Colores principales - Tema oscuro */
    --bg-primary: #0a0a1a;
    --bg-secondary: #12122a;
    --bg-tertiary: #1a1a3e;
    
    /* Efectos glass */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.06);
    --glass-bg-active: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-hover: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --glass-blur: blur(20px);
    
    /* Texto */
    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --text-tertiary: #6a6a8a;
    
    /* Acentos y gradientes */
    --accent-1: #6366f1;
    --accent-2: #8b5cf6;
    --accent-3: #ec4899;
    --accent-4: #06b6d4;
    --accent-5: #10b981;
    
    --gradient-1: linear-gradient(135deg, #6366f1, #8b5cf6);
    --gradient-2: linear-gradient(135deg, #ec4899, #8b5cf6);
    --gradient-3: linear-gradient(135deg, #06b6d4, #6366f1);
    --gradient-4: linear-gradient(135deg, #10b981, #06b6d4);
    --gradient-5: linear-gradient(135deg, #f59e0b, #ec4899);
    
    /* Estados */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Sombras y efectos */
    --glow-1: 0 0 20px rgba(99, 102, 241, 0.3);
    --glow-2: 0 0 20px rgba(139, 92, 246, 0.3);
    --glow-3: 0 0 20px rgba(236, 72, 153, 0.3);
    
    /* Bordes y radios */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-2xl: 30px;
    
    /* Transiciones */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Fuentes */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Layout */
    --header-height: 80px;
    --max-width: 1400px;
    --sidebar-width: 380px;
}

/* Tema claro */
[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecef;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-bg-hover: rgba(255, 255, 255, 0.85);
    --glass-bg-active: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(0, 0, 0, 0.1);
    --glass-border-hover: rgba(0, 0, 0, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-tertiary: #8a8aaa;
}

/* Reset y estilos base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Fondo de partículas */
.particles-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
    opacity: 0.3;
    filter: blur(1px);
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0) scale(1); }
    10% { transform: translateY(-30px) translateX(20px) scale(1.1); }
    20% { transform: translateY(-60px) translateX(-15px) scale(0.9); }
    30% { transform: translateY(-90px) translateX(30px) scale(1.2); }
    40% { transform: translateY(-120px) translateX(-25px) scale(1); }
    50% { transform: translateY(-100px) translateX(40px) scale(0.8); }
    60% { transform: translateY(-70px) translateX(-35px) scale(1.1); }
    70% { transform: translateY(-40px) translateX(15px) scale(1.3); }
    80% { transform: translateY(-20px) translateX(-20px) scale(0.9); }
    90% { transform: translateY(-50px) translateX(25px) scale(1); }
}

/* Gradiente de fondo */
.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(236, 72, 153, 0.05) 0%, transparent 50%);
    transition: opacity var(--transition-normal);
}

[data-theme="light"] .background-gradient {
    opacity: 0.5;
}

/* Utilidades */
.hidden { display: none !important; }
.text-gradient {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Accesibilidad */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Animaciones */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

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

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

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

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--glass-border-hover);
}

/* Contenido principal */
.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem 2rem;
    display: grid;
    grid-template-columns: 1fr var(--sidebar-width);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.ranking-container {
    min-width: 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-title h2 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.section-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Estados de carga y vacío */
.loading-state {
    text-align: center;
    padding: 4rem 2rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--glass-border);
    border-top-color: var(--accent-1);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

.no-results {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--glass-bg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.no-results h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.no-results p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.reset-filters-btn {
    padding: 0.7rem 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    color: var(--text-primary);
    cursor: pointer;
    font-family: var(--font-body);
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.reset-filters-btn:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
}

/* Toast notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 400px;
}

.toast {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    animation: slideInRight 0.3s ease-out;
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--info); }
.toast.warning { border-left: 3px solid var(--warning); }

.toast.removing {
    animation: slideOutRight 0.3s ease-in forwards;
}

/* Ordenamiento */
.sort-options {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    align-items: center;
}

.sort-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-right: 0.5rem;
}

.sort-btn {
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 0.8rem;
    font-family: var(--font-body);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.sort-btn i { font-size: 0.7rem; }

.sort-btn:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
}

.sort-btn.active {
    background: var(--accent-2);
    color: white;
    border-color: transparent;
    box-shadow: var(--glow-2);
}

/* Cargar más */
.load-more-container {
    text-align: center;
    margin-top: 1.5rem;
}

.load-more-btn {
    padding: 0.8rem 2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    color: var(--text-primary);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.load-more-btn:hover {
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    transform: translateY(-2px);
}

.load-more-count {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}