/* 
 * Premios Nobel - Estilos CSS
 * Paleta de colores: Turquesa, Violeta, Beige, Rojo
 */

:root {
    /* Colores principales */
    --turquoise-dark: #0d7377;
    --turquoise: #14a2a8;
    --turquoise-light: #32e0c4;
    --violet-dark: #6b4c9a;
    --violet: #9b72cf;
    --violet-light: #c7a9f5;
    --beige: #f5f1e8;
    --beige-dark: #e8dcc4;
    --red-accent: #e74c3c;
    --red-hover: #c0392b;
    
    /* Colores de texto */
    --text-dark: #2c3e50;
    --text-light: #ecf0f1;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Fuentes */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-title: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Reset básico */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--beige);
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--turquoise-dark) 0%, var(--turquoise) 100%);
    color: var(--text-light);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

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

.logo {
    width: 50px;
    height: 50px;
}

.site-title {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 600;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.main-nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.main-nav a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Botón Hamburguesa */
.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    gap: 5px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background-color: var(--text-light);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--violet-dark) 0%, var(--violet) 100%);
    color: var(--text-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-title {
    font-family: var(--font-title);
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

.cta-button {
    background-color: var(--red-accent);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    background-color: var(--red-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Section Styles */
.history-section,
.categories-section,
.years-section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-family: var(--font-title);
    font-size: 2.5rem;
    color: var(--turquoise-dark);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--turquoise), var(--violet));
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

/* History Content */
.history-content {
    display: grid;
    gap: var(--spacing-md);
}

.history-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-left: 5px solid var(--turquoise);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.history-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.history-card.highlight {
    border-left-color: var(--violet);
    background: linear-gradient(135deg, #fff 0%, var(--beige) 100%);
}

.history-card h3 {
    color: var(--violet-dark);
    font-size: 1.6rem;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-title);
}

.history-card p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.original-categories,
.fun-facts {
    list-style: none;
    padding-left: var(--spacing-sm);
}

.original-categories li,
.fun-facts li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-md);
}

.original-categories li::before {
    content: '🏆';
    position: absolute;
    left: 0;
}

.fun-facts li {
    padding-left: 2rem;
}

.original-categories strong {
    color: var(--turquoise-dark);
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.category-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border-top: 5px solid var(--turquoise);
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.2);
}

.category-card.physics { border-top-color: #3498db; }
.category-card.chemistry { border-top-color: #2ecc71; }
.category-card.medicine { border-top-color: #e74c3c; }
.category-card.literature { border-top-color: #f39c12; }
.category-card.peace { border-top-color: var(--turquoise); }
.category-card.economics { border-top-color: var(--violet); }

.category-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.category-card h3 {
    font-family: var(--font-title);
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.category-card p {
    color: #7f8c8d;
    margin-bottom: var(--spacing-md);
}

.category-button {
    background-color: var(--red-accent);
    color: white;
    border: none;
    padding: var(--spacing-xs) var(--spacing-md);
    font-weight: bold;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-button:hover {
    background-color: var(--red-hover);
    transform: scale(1.05);
}

/* Years Section */
.years-section {
    background: white;
}

.year-selector {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.year-selector label {
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--text-dark);
}

.year-dropdown {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 1rem;
    border: 2px solid var(--turquoise);
    border-radius: 5px;
    background-color: white;
    cursor: pointer;
    min-width: 200px;
}

.search-button {
    background-color: var(--turquoise);
    color: white;
    border: none;
    padding: var(--spacing-xs) var(--spacing-md);
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-button:hover {
    background-color: var(--turquoise-dark);
}

.year-results {
    min-height: 200px;
    padding: var(--spacing-md);
    background-color: var(--beige);
    border-radius: 12px;
}

.placeholder-text {
    text-align: center;
    color: #7f8c8d;
    font-style: italic;
    padding: var(--spacing-lg) 0;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--text-dark) 0%, #34495e 100%);
    color: var(--text-light);
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

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

.footer-section h4 {
    color: var(--turquoise-light);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--turquoise-light);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .header .container {
        position: relative;
    }
    
    .hamburger {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: linear-gradient(180deg, var(--turquoise-dark) 0%, var(--turquoise) 100%);
        transition: right 0.3s ease;
        padding-top: 5rem;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.2);
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 0;
    }
    
    .main-nav ul li {
        width: 100%;
        text-align: center;
    }
    
    .main-nav a {
        display: block;
        padding: 1rem;
        font-size: 1.1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .year-selector {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .site-title {
        font-size: 1.3rem;
    }
    
    .logo {
        width: 40px;
        height: 40px;
    }
}