/**
 * SEOagil Blog - Estilos con Glass-morphism
 * Diseño consistente con la homepage
 */

/* ============================================================================
   VARIABLES Y RESET
   ============================================================================ */

:root {
    /* Colores principales */
    --c-purple: #7c3aed;
    --c-purple-dark: #6d28d9;
    --c-purple-light: #a78bfa;
    --c-teal: #00d4ff;
    --c-teal-dark: #00b8e6;

    /* Glass-morphism */
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(124, 58, 237, 0.25);
    --glass-shadow: 0 4px 30px rgba(124, 58, 237, 0.15);

    /* Tipografía */
    --font-main: 'Ubuntu', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Espaciado */
    --radius: 20px;
    --radius-sm: 12px;
    --radius-lg: 24px;

    /* Transiciones */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-main);
    color: #1f2937;
    background: linear-gradient(135deg, #f3e7ff 0%, #e0f2fe 100%);
    background-attachment: fixed;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ============================================================================
   LAYOUT
   ============================================================================ */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================================================
   HEADER
   ============================================================================ */

.blog-header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 16px 0;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.logo img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.logo:hover img {
    transform: scale(1.05);
}

.main-nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

.main-nav a {
    font-weight: 500;
    font-size: 15px;
    color: #4b5563;
    position: relative;
    padding: 8px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--c-purple), var(--c-purple-dark));
    transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--c-purple);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.blog-hero {
    padding: 80px 0 60px;
    text-align: center;
}

.blog-hero h1 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    background: linear-gradient(135deg, var(--c-purple), var(--c-purple-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.blog-hero p {
    font-size: 18px;
    color: #6b7280;
    margin-bottom: 40px;
}

/* Search Bar */
.search-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 16px 48px 16px 20px;
    font-size: 16px;
    font-family: var(--font-main);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
    outline: none;
}

.search-input:focus {
    border-color: var(--c-purple);
    box-shadow: 0 4px 30px rgba(124, 58, 237, 0.3);
}

.search-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--c-purple);
    pointer-events: none;
}

/* ============================================================================
   CATEGORIES FILTER
   ============================================================================ */

.categories-filter {
    padding: 24px 0;
    border-bottom: 1px solid var(--glass-border);
}

.categories-scroll {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--c-purple-light) transparent;
}

.categories-scroll::-webkit-scrollbar {
    height: 4px;
}

.categories-scroll::-webkit-scrollbar-thumb {
    background: var(--c-purple-light);
    border-radius: 2px;
}

.category-chip {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    color: #6b7280;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    white-space: nowrap;
    transition: var(--transition);
    cursor: pointer;
}

.category-chip:hover,
.category-chip.active {
    background: linear-gradient(135deg, var(--c-purple), var(--c-purple-dark));
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

/* ============================================================================
   POSTS GRID
   ============================================================================ */

.blog-main {
    padding: 60px 0 80px;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
    animation: fadeInUp 0.6s ease;
}

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

/* Post Card */
.post-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 40px rgba(124, 58, 237, 0.25);
    border-color: var(--c-purple);
}

.post-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.post-card-image {
    position: relative;
    width: 100%;
    padding-top: 52.5%; /* 1200/630 aspect ratio */
    overflow: hidden;
    background: linear-gradient(135deg, var(--c-purple-light), var(--c-teal));
}

.post-card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.post-card:hover .post-card-image img {
    transform: scale(1.05);
}

.post-card-category {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: white;
    background: linear-gradient(135deg, var(--c-purple), var(--c-purple-dark));
    border-radius: 100px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.post-card-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-card-title {
    font-size: 20px;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 12px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card:hover .post-card-title {
    color: var(--c-purple);
}

.post-card-excerpt {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 20px;
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 13px;
    color: #9ca3af;
    padding-top: 16px;
    border-top: 1px solid rgba(124, 58, 237, 0.1);
}

.reading-time::before {
    content: '📖';
    margin-right: 6px;
}

/* No Posts */
.no-posts {
    text-align: center;
    padding: 80px 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

.no-posts p {
    font-size: 18px;
    color: #6b7280;
    margin-bottom: 16px;
}

.no-posts p:last-child {
    margin-bottom: 0;
    font-size: 16px;
}

/* ============================================================================
   PAGINATION
   ============================================================================ */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-top: 60px;
}

.pagination-btn {
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    color: white;
    background: linear-gradient(135deg, var(--c-purple), var(--c-purple-dark));
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
    transition: var(--transition);
}

.pagination-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

.pagination-info {
    font-size: 15px;
    color: #6b7280;
    font-weight: 500;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.blog-footer {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    padding: 60px 0 24px;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand img {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: 48px;
    justify-content: flex-end;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--c-purple);
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--c-purple);
    transform: translateX(4px);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(124, 58, 237, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: #9ca3af;
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 24px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-links {
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .main-nav {
        gap: 20px;
        font-size: 14px;
    }

    .blog-hero {
        padding: 60px 0 40px;
    }

    .blog-hero h1 {
        font-size: 32px;
    }

    .blog-hero p {
        font-size: 16px;
    }

    .posts-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-links {
        flex-direction: column;
        gap: 32px;
    }

    .categories-scroll {
        gap: 8px;
    }

    .category-chip {
        padding: 6px 16px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .header-content {
        gap: 16px;
    }

    .logo img {
        height: 32px;
    }

    .main-nav {
        gap: 12px;
        font-size: 13px;
    }

    .search-input {
        padding: 14px 44px 14px 16px;
        font-size: 15px;
    }

    .post-card-content {
        padding: 20px;
    }

    .post-card-title {
        font-size: 18px;
    }

    .pagination {
        flex-direction: column;
        gap: 16px;
    }
}

/* ============================================================================
   UTILITIES
   ============================================================================ */

.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;
}

/* Loading State */
.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Focus States */
*:focus-visible {
    outline: 2px solid var(--c-purple);
    outline-offset: 2px;
}

/* ============================================================================
   CATEGORY PAGES
   ============================================================================ */

/* Breadcrumbs */
.breadcrumbs {
    padding: 20px 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.breadcrumbs nav {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: #6b7280;
}

.breadcrumbs a {
    color: #6b7280;
    transition: var(--transition);
}

.breadcrumbs a:hover {
    color: var(--c-purple);
}

.breadcrumbs .separator {
    color: #d1d5db;
}

.breadcrumbs .current {
    color: var(--c-purple);
    font-weight: 500;
}

/* Category Hero */
.category-hero {
    padding: 60px 0 40px;
    text-align: center;
}

.category-icon {
    font-size: 64px;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.category-hero h1 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    background: linear-gradient(135deg, var(--c-purple), var(--c-purple-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.category-hero p {
    font-size: 18px;
    color: #6b7280;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.category-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

.posts-count {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    color: white;
    background: linear-gradient(135deg, var(--c-purple), var(--c-purple-dark));
    border-radius: 100px;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.posts-count::before {
    content: '📄';
    margin-right: 8px;
}

/* Other Categories Section */
.other-categories {
    padding: 60px 0 40px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    margin-top: 60px;
}

.other-categories h3 {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    background: linear-gradient(135deg, var(--c-purple), var(--c-purple-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 40px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.category-card {
    background: white;
    padding: 32px 24px;
    text-align: center;
    border: 2px solid var(--glass-border);
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
}

.category-card:hover {
    border-color: var(--c-purple);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(124, 58, 237, 0.2);
}

.category-card-icon {
    font-size: 48px;
    margin-bottom: 16px;
    transition: var(--transition);
}

.category-card:hover .category-card-icon {
    transform: scale(1.1);
}

.category-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 8px;
    transition: var(--transition);
}

.category-card:hover h4 {
    color: var(--c-purple);
}

.category-card p {
    font-size: 14px;
    color: #6b7280;
}

/* Responsive for Category Pages */
@media (max-width: 768px) {
    .category-hero {
        padding: 40px 0 30px;
    }

    .category-icon {
        font-size: 48px;
        margin-bottom: 16px;
    }

    .categories-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 16px;
    }

    .category-card {
        padding: 24px 16px;
    }

    .other-categories h3 {
        font-size: 24px;
    }
}