/* ===========================
   VARIABLES CSS POKÉMON THEME
   =========================== */
:root {
    /* Colores Pokémon */
    --pokemon-red: #dc0a2d;
    --pokemon-blue: #3d7dca;
    --pokemon-yellow: #ffcb05;
    --pokemon-green: #00a86b;
    --pokemon-purple: #7b68ee;
    --pokemon-orange: #ff6600;
    
    /* Colores principales */
    --primary-color: var(--pokemon-red);
    --primary-dark: #b8082a;
    --secondary-color: var(--pokemon-blue);
    --accent-color: var(--pokemon-yellow);
    --success-color: var(--pokemon-green);
    --danger-color: #dc3545;
    --warning-color: var(--pokemon-orange);
    --info-color: var(--pokemon-purple);
    
    /* Colores neutros */
    --white: #ffffff;
    --light: #f8f9fa;
    --dark: #2c3e50;
    --black: #000000;
    
    /* Grises */
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    /* Tipografía Pokémon */
    --font-family-base: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-heading: 'Nunito', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    --font-size-xxxl: 40px;
    --line-height-base: 1.6;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    --spacing-xxxl: 4rem;
    
    /* Bordes */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --border-width: 2px;
    
    /* Sombras Pokémon */
    --shadow-sm: 0 2px 4px rgba(220, 10, 45, 0.1);
    --shadow: 0 4px 8px rgba(220, 10, 45, 0.15);
    --shadow-md: 0 8px 16px rgba(220, 10, 45, 0.2);
    --shadow-lg: 0 16px 32px rgba(220, 10, 45, 0.25);
    --shadow-pokemon: 0 8px 32px rgba(61, 125, 202, 0.3);
    
    /* Transiciones */
    --transition-fast: 0.2s ease-out;
    --transition-base: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
    
    /* Gradientes Pokémon */
    --gradient-primary: linear-gradient(135deg, var(--pokemon-red) 0%, var(--pokemon-blue) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--pokemon-blue) 0%, var(--pokemon-purple) 100%);
    --gradient-accent: linear-gradient(135deg, var(--pokemon-yellow) 0%, var(--pokemon-orange) 100%);
    --gradient-pokeball: linear-gradient(180deg, #ff0000 50%, #ffffff 50%);
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--dark);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.pokemon-theme {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    background-attachment: fixed;
}

/* ===========================
   LAYOUT PRINCIPAL
   =========================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.main-content {
    min-height: calc(100vh - 120px); /* Ajustar según altura del header y footer */
}

/* ===========================
   HEADER POKÉDEX
   =========================== */
.pokedex-header {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.pokedex-header .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.pokeball-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-pokeball);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--white);
    position: relative;
    animation: rotate 4s linear infinite;
}

.pokeball-icon::after {
    content: '';
    width: 12px;
    height: 12px;
    background: var(--white);
    border-radius: 50%;
    border: 2px solid var(--dark);
    position: absolute;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.navbar-brand h1 {
    color: var(--white);
    font-size: var(--font-size-xxl);
    font-weight: 800;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.search-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255,255,255,0.2);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-xl);
    backdrop-filter: blur(10px);
}

.search-input {
    background: transparent;
    border: none;
    color: var(--white);
    font-size: var(--font-size-base);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    min-width: 200px;
    outline: none;
}

.search-input::placeholder {
    color: rgba(255,255,255,0.7);
}

.search-btn {
    background: var(--accent-color);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: var(--font-size-lg);
}

.search-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

/* ===========================
   SECCIONES POKÉMON
   =========================== */
.pokemon-section {
    padding: var(--spacing-xxxl) 0;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    min-height: calc(100vh - 120px);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxxl);
}

.section-header h2 {
    font-size: var(--font-size-xxxl);
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: rgba(255,255,255,0.9);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

/* Filtros */
.filters-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxxl);
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.filter-group label {
    color: var(--white);
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.filter-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.9);
    color: var(--dark);
    font-weight: 500;
    min-width: 180px;
    transition: var(--transition-fast);
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(255, 203, 5, 0.3);
}

/* Grid de Pokémon */
.pokemon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxxl);
}

/* Paginación */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.pagination-btn {
    background: rgba(255,255,255,0.2);
    border: 2px solid rgba(255,255,255,0.3);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.pagination-btn:hover:not(:disabled) {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.pagination-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    color: var(--white);
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

/* ===========================
   FOOTER
   =========================== */
.footer {
    background-color: var(--dark);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .navbar-nav {
        gap: var(--spacing-md);
    }
    
    .hero h2 {
        font-size: var(--font-size-xl);
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 576px) {
    .navbar-nav {
        flex-direction: column;
        text-align: center;
    }
    
    .hero {
        padding: var(--spacing-xxl) 0;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
}