/* ========================================
   EL RAYO - Estilo Periódico Minimalista
   Con interactividad y diseño periodístico
   ======================================== */

:root {
    --color-bg: #ffffff;
    --color-bg-secondary: #f8f8f8;
    --color-text: #111111;
    --color-text-secondary: #333333;
    --color-text-muted: #666666;
    --color-border: #ddd;
    --color-accent: #c41e3a;
    --color-accent-hover: #a01830;
    
    --font-serif: 'Georgia', 'Times New Roman', serif;
    --font-sans: 'Arial', 'Helvetica', sans-serif;
    --font-size-base: 18px;
    --line-height: 1.6;
    
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    
    --transition-fast: 0.2s ease;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
}

*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-serif);
    font-size: 1rem;
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
    margin: 0;
    padding: 0;
}

/* ========================================
   HEADER - Estilo EL RAYO
   ======================================== */
.header {
    background: linear-gradient(180deg, #111 0%, #222 100%);
    color: #fff;
    padding: var(--space-lg) var(--space-md);
    text-align: center;
    border-bottom: 4px solid #c41e3a;
}

.header-main {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.logo-link {
    text-decoration: none;
    color: inherit;
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 8px;
    text-transform: uppercase;
    color: #fff;
    transition: color var(--transition-fast);
}

.logo-link:hover .logo-text {
    color: #c41e3a;
}

.logo-separator {
    font-size: 2rem;
    opacity: 0.6;
}

.logo-subtitle {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    opacity: 0.8;
}

.date {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ========================================
   NAV - Menú de categorías
   ======================================== */
.nav {
    background: var(--color-bg);
    border-bottom: 2px solid var(--color-border);
    padding: var(--space-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-categories {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.category-btn {
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.category-btn.active {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.category-btn:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.nav-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
}

.search-container,
.filter-container {
    flex: 1;
    min-width: 200px;
    max-width: 400px;
}

input[type="search"],
select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
    font-family: var(--font-sans);
    border: 2px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
}

input[type="search"]:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* ========================================
   ACCESSIBILITY CONTROLS
   ======================================== */
.accessibility-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.accessibility-controls button {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.8rem;
    font-family: var(--font-sans);
    background: var(--color-bg-secondary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.accessibility-controls button:hover {
    background: var(--color-text);
    color: #fff;
}

.accessibility-controls button:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
    min-height: 60vh;
}

.loading,
.no-results {
    text-align: center;
    padding: var(--space-xl);
    color: var(--color-text-muted);
    font-family: var(--font-sans);
}

.loading-spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: var(--space-sm);
    vertical-align: middle;
}

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

/* ========================================
   NEWS GRID
   ======================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-lg);
}

/* ========================================
   NEWS CARD - Interactividad
   ======================================== */
.news-card {
    background: #fff;
    border: 1px solid var(--color-border);
    padding: var(--space-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-accent);
    transform: scaleY(0);
    transition: transform var(--transition-fast);
    transform-origin: bottom;
}

.news-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.news-card:hover::before {
    transform: scaleY(1);
}

.news-card h2 {
    margin: 0 0 var(--space-sm);
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.3;
}

.news-card h2 a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.news-card h2 a:hover {
    color: var(--color-accent);
}

.news-card h2 a:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.news-card .summary {
    margin: var(--space-sm) 0;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card .meta {
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.news-card .source {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-accent);
}

.news-card .category {
    background: var(--color-bg-secondary);
    padding: 2px var(--space-sm);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.news-card .read-more {
    display: inline-block;
    margin-top: var(--space-sm);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-accent);
    text-decoration: none;
    opacity: 0;
    transform: translateX(-10px);
    transition: all var(--transition-fast);
}

.news-card:hover .read-more {
    opacity: 1;
    transform: translateX(0);
}

/* ========================================
   COOKIE BANNER
   ======================================== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #111;
    color: #fff;
    padding: var(--space-md);
    z-index: 9999;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
}

.cookie-content h3 {
    margin: 0;
    font-size: 0.9rem;
}

.cookie-content p {
    margin: 0;
    font-size: 0.8rem;
    opacity: 0.8;
}

.cookie-buttons {
    display: flex;
    gap: var(--space-sm);
}

.btn {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.8rem;
    font-family: var(--font-sans);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
}

.btn-secondary {
    background: #444;
    color: #fff;
}

.btn:focus {
    outline: 3px solid #fff;
    outline-offset: 2px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: #111;
    color: #fff;
    padding: var(--space-xl) var(--space-md);
    margin-top: var(--space-xl);
    text-align: center;
}

.footer p {
    margin: 0 0 var(--space-md);
    font-family: var(--font-sans);
    font-size: 0.85rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

.footer-links a {
    color: #aaa;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: #fff;
}

/* ========================================
   ALTO CONTRASTE
   ======================================== */
.high-contrast-active {
    --color-bg: #000;
    --color-bg-secondary: #111;
    --color-text: #fff;
    --color-text-secondary: #ddd;
    --color-border: #444;
    --color-accent: #ff0;
}

.high-contrast-active .logo-text,
.high-contrast-active .source {
    color: #ff0;
}

.high-contrast-active .category-btn.active {
    background: #ff0;
    color: #000;
}

/* ========================================
   FOCUS VISIBLE
   ======================================== */
:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .logo-text {
        font-size: 2.5rem;
    }
    
    .nav-categories {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
    }
    
    .category-btn {
        flex-shrink: 0;
    }
}

@media (max-width: 768px) {
    .logo-text {
        font-size: 2rem;
        letter-spacing: 4px;
    }
    
    .logo-separator {
        display: none;
    }
    
    .header-main {
        gap: var(--space-sm);
    }
    
    .nav {
        padding: var(--space-sm);
    }
    
    .nav-categories {
        justify-content: flex-start;
        padding-bottom: var(--space-sm);
        margin-bottom: var(--space-sm);
    }
    
    .category-btn {
        padding: var(--space-xs) var(--space-md);
        white-space: nowrap;
        font-size: 0.75rem;
    }
    
    .nav-controls {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .search-container,
    .filter-container {
        max-width: 100%;
        width: 100%;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .news-card {
        padding: var(--space-md);
    }
    
    .news-card::before {
        display: none;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .cookie-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-buttons {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.5rem;
        letter-spacing: 2px;
    }
    
    .logo-subtitle {
        font-size: 0.7rem;
    }
    
    .header {
        padding: var(--space-md);
    }
    
    .date {
        font-size: 0.7rem;
    }
    
    .category-btn {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0.7rem;
    }
    
    .accessibility-controls {
        gap: var(--space-xs);
    }
    
    .accessibility-controls button {
        padding: var(--space-xs);
        font-size: 0.7rem;
    }
    
    .news-card h2 {
        font-size: 1rem;
    }
    
    .news-card .summary {
        font-size: 0.85rem;
        -webkit-line-clamp: 2;
    }
    
    .news-card .meta {
        font-size: 0.7rem;
    }
    
    .news-card .source,
    .news-card .category {
        font-size: 0.65rem;
    }
}

@media (max-width: 320px) {
    html {
        font-size: 16px;
    }
    
    .logo-text {
        font-size: 1.25rem;
    }
    
    .header {
        padding: var(--space-sm);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   PRINT
   ======================================== */
@media print {
    .nav,
    .accessibility-controls,
    .cookie-banner,
    .skip-link {
        display: none;
    }
    
    .news-card {
        break-inside: avoid;
    }
}

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