/* ==========================================
   CSS Variables - Color Palette
   ========================================== */
:root {
    /* Colores Light Mode - Estilo Apple */
    --color-bg-light: #ffffff;
    --color-surface-light: #ffffff;
    --color-text-primary-light: #1d1d1f;
    --color-text-secondary-light: #6e6e73;
    
    /* Colores Dark Mode - Estilo Apple */
    --color-bg-dark: #000000;
    --color-surface-dark: #1c1c1e;
    --color-text-primary-dark: #ffffff;
    --color-text-secondary-dark: #aeaeb2;
    
    /* Colores de acento */
    --color-accent: hsl(221.2, 83.2%, 53.3%);
    --color-accent-hover: hsl(221.2, 83.2%, 43.3%);
    --color-accent-light: hsl(221.2, 83.2%, 63.3%);
    
    /* Variables activas (por defecto light mode) */
    --bg-primary: var(--color-bg-light);
    --bg-secondary: var(--color-surface-light);
    --text-primary: var(--color-text-primary-light);
    --text-secondary: var(--color-text-secondary-light);
    --border-color: #d2d2d7;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
    
    /* Tipografía */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Bordes */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    
    /* Transiciones y Animaciones - Estilo Apple */
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s ease-out;
    --transition: all 0.3s ease; /* Mantener compatibilidad */
}

/* Dark Mode - Estilo Apple */
body.dark-mode {
    --bg-primary: var(--color-bg-dark);
    --bg-secondary: var(--color-surface-dark);
    --text-primary: var(--color-text-primary-dark);
    --text-secondary: var(--color-text-secondary-dark);
    --border-color: #38383a;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.7);
}

/* Transición suave para todos los elementos al cambiar tema */
*,
*::before,
*::after {
    transition-property: background-color, color, border-color, box-shadow, fill, stroke;
    transition-duration: 0.4s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================
   Sistema de Animaciones Unificado
   ========================================== */

/* Estado inicial - todos los elementos ocultos */
.page-loading * {
    opacity: 0;
    transform: translateY(20px);
}

/* Animación de entrada unificada */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Aplicar animación a todos los elementos principales */
.header,
.nav,
.hero,
.filter-section,
.main,
.footer {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Delays escalonados para crear flujo elegante */
.header {
    animation-delay: 0.1s;
}

.nav {
    animation-delay: 0.15s;
}

.hero {
    animation-delay: 0.2s;
}

.filter-section {
    animation-delay: 0.3s;
}

.main {
    animation-delay: 0.4s;
}

.footer {
    animation-delay: 0.5s;
}

/* Animación para posts individuales (dentro del carrusel) */
.post-card {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    opacity: 0;
    transform: translateY(15px);
}

/* Delay progresivo para posts */
.post-card:nth-child(1) { animation-delay: 0.1s; }
.post-card:nth-child(2) { animation-delay: 0.2s; }
.post-card:nth-child(3) { animation-delay: 0.3s; }

/* Animación para elementos de formulario */
.form-group,
.admin-section {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    opacity: 0;
    transform: translateY(15px);
}

/* Delay escalonado para formularios */
.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.15s; }
.form-group:nth-child(3) { animation-delay: 0.2s; }
.form-group:nth-child(4) { animation-delay: 0.25s; }
.form-group:nth-child(5) { animation-delay: 0.3s; }
.form-group:nth-child(6) { animation-delay: 0.35s; }

/* Animación para botones y controles */
.btn-primary,
.btn-secondary,
.filter-btn,
.theme-toggle {
    animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    opacity: 0;
    transform: translateY(10px);
}

/* Respetar preferencias de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
    .page-loading *,
    .header,
    .nav,
    .hero,
    .filter-section,
    .main,
    .footer,
    .post-card,
    .form-group,
    .admin-section,
    .btn-primary,
    .btn-secondary,
    .filter-btn,
    .theme-toggle {
        animation: none;
        opacity: 1;
        transform: none;
    }
}

/* ==========================================
   Animaciones Estilo Apple
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Respetar preferencias de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    body {
        transition: none !important;
    }
}

/* ==========================================
   Reset & Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* ==========================================
   Header & Navigation
   ========================================== */
.header {
    background-color: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-md);
    max-width: 1200px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo:hover {
    color: var(--color-accent);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition-property: color, background-color, transform;
    transition-duration: 0.15s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover {
    color: var(--color-accent);
    background-color: var(--bg-primary);
}

.nav-link.active {
    color: var(--color-accent);
    background-color: var(--bg-primary);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition-property: border-color, background-color, transform, box-shadow;
    transition-duration: 0.25s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0;
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
    color: white;
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 12px rgba(77, 122, 239, 0.3);
}

.theme-toggle:active {
    transform: translateY(0) scale(0.95);
}

.theme-toggle svg {
    transition-property: transform;
    transition-duration: 0.3s;
    transition-timing-function: ease;
}

.theme-toggle:hover svg {
    transform: rotate(15deg);
}

.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

body.dark-mode .sun-icon {
    display: block;
}

body.dark-mode .moon-icon {
    display: none;
}

/* Header negro puro en dark mode */
body.dark-mode .header {
    background-color: var(--bg-primary);
}

/* Footer negro puro en dark mode */
body.dark-mode .footer {
    background-color: var(--bg-primary);
}

/* Hero negro puro en dark mode */
body.dark-mode .hero {
    background: var(--bg-primary);
}

/* Cards con fondo sutil en light mode */
.post-card {
    background-color: var(--bg-secondary);
}

body:not(.dark-mode) .post-card {
    background-color: #f5f5f7;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    background: var(--bg-secondary);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   Filter Section
   ========================================== */
.filter-section {
    padding: var(--spacing-lg) var(--spacing-md);
}

.filter-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.filter-row {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 2px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.filter-btn:hover::before {
    left: 100%;
}

.filter-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    background-color: var(--bg-primary);
}

.filter-btn:active {
    transform: translateY(0) scale(0.98);
}

.filter-btn.active {
    background-color: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.3);
}

.filter-btn.active:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 10px 30px rgba(0, 123, 255, 0.4);
}

/* ==========================================
   Posts Grid
   ========================================== */
.main {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-md);
    max-width: 100%;
    overflow: visible;
}

/* ==========================================
   Carousel Styles
   ========================================== */
.carousel-container {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    max-width: 100%;
    padding: var(--spacing-md) 0;
}

.posts-carousel {
    flex: 1;
    overflow: hidden;
    min-width: 0;
    padding: var(--spacing-md) 0;
}

.carousel-wrapper {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    padding: var(--spacing-sm) 0;
}

.carousel-wrapper .posts-grid {
    flex: 0 0 100%;
    width: 100%;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    width: 100%;
    align-items: stretch;
    flex-shrink: 0;
    padding: var(--spacing-md) 0;
}

.carousel-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    z-index: 10;
    position: relative;
}

.carousel-btn:hover {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
    transform: scale(1.1);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-indicator.active {
    background: var(--color-accent);
    transform: scale(1.2);
}

.post-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    cursor: pointer;
    height: 100%;
    min-height: 350px;
}

/* Delays para posts manejados por el sistema unificado */

.post-card-empty {
    background-color: transparent;
    border: none;
    box-shadow: none;
    visibility: hidden;
    height: 100%;
    min-height: 350px;
}

.post-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--color-accent);
    cursor: pointer;
}

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

.post-card-header {
    margin-bottom: var(--spacing-md);
}

.post-card-category {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.post-card-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.post-card-excerpt {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.post-card-footer {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.post-card-category-container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--spacing-sm);
}

.post-card-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
}


.post-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.tag {
    padding: 0.25rem 0.625rem;
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
}

/* ==========================================
   Post Content Page
   ========================================== */
.post-content {
    max-width: 800px;
    padding: var(--spacing-xl) var(--spacing-md);
}

.back-link {
    display: inline-flex;
    align-items: center;
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    transition: var(--transition);
}

.back-link:hover {
    color: var(--color-accent-hover);
    transform: translateX(-4px);
}

.post-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.post-meta {
    display: flex;
    gap: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.post-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.post-body {
    color: var(--text-primary);
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.post-body h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.post-body h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.post-body p {
    margin-bottom: var(--spacing-md);
}

.post-body ul,
.post-body ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.post-body li {
    margin-bottom: var(--spacing-xs);
}

.post-body a {
    color: var(--color-accent);
    text-decoration: underline;
    transition: var(--transition);
}

.post-body a:hover {
    color: var(--color-accent-hover);
}

.post-body code {
    background-color: var(--bg-primary);
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--color-accent);
}

.post-body pre {
    background-color: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.post-body pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

.post-body blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.post-footer {
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--border-color);
    text-align: center;
}

/* ==========================================
   About Page
   ========================================== */
.about-content {
    max-width: 900px;
    padding: var(--spacing-xl) var(--spacing-md);
}

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

.about-header h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.about-body {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.avatar-placeholder {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-hover);
    color: white;
}

.profile-photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-hover);
    border: 4px solid var(--color-accent);
}

.about-text h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    text-align: justify;
}

.skills-section {
    margin-top: var(--spacing-xl);
}

.skills-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.skill-tag:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.cta-section {
    margin-top: var(--spacing-xl);
}

.cta-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.social-links-large {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.social-link {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-accent);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.social-link:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.back-to-blog {
    text-align: center;
    padding-top: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

/* ==========================================
   Buttons
   ========================================== */
.btn-primary {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: white;
    color: var(--color-accent);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition-property: background-color, transform, box-shadow, color;
    transition-duration: 0.25s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid var(--color-accent);
    cursor: pointer;
}

.btn-primary:hover {
    background-color: var(--color-accent);
    color: white;
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-hover);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: auto;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.footer p {
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition-property: color, background-color, transform;
    transition-duration: 0.25s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

.social-links a:hover {
    color: var(--color-accent);
    background-color: var(--bg-primary);
    transform: translateY(-3px) scale(1.1);
}

.social-links a:active {
    transform: translateY(-1px) scale(1.05);
}

/* ==========================================
   Utility Classes
   ========================================== */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.hidden {
    display: none !important;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .post-title {
        font-size: 2rem;
    }
    
    .about-body {
        grid-template-columns: 1fr;
    }
    
    .avatar-placeholder {
        width: 150px;
        height: 150px;
    }
    
    .profile-photo {
        width: 150px;
        height: 150px;
    }
    
    .nav-menu {
        gap: var(--spacing-xs);
    }
    
    .nav-link {
        padding: var(--spacing-xs);
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .filter-buttons {
        justify-content: flex-start;
    }
    
    .post-card-title {
        font-size: 1.25rem;
    }
    
    .about-header h1 {
        font-size: 2rem;
    }
    
    /* Carousel responsive */
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .carousel-container {
        gap: var(--spacing-lg);
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
    }
    
    .post-card {
        min-height: 320px;
    }
    
    .post-card-empty {
        min-height: 320px;
    }
}

@media (max-width: 480px) {
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .carousel-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .carousel-btn {
        width: 36px;
        height: 36px;
    }
    
    .posts-grid {
        gap: var(--spacing-md);
    }
    
    .carousel-indicators {
        margin-top: var(--spacing-md);
    }
    
    .post-card {
        min-height: 280px;
    }
    
    .post-card-empty {
        min-height: 280px;
    }
}

/* ==========================================
   Admin Panel - Tabs Navigation
   ========================================== */

.admin-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.tab-button {
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    min-width: fit-content;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    text-align: center;
    position: relative;
}

.tab-icon {
    font-size: 1.2rem;
    line-height: 1;
}

.tab-text {
    font-weight: 600;
    font-size: 0.9rem;
}

.tab-subtitle {
    font-size: 0.7rem;
    opacity: 0.7;
    font-weight: 400;
}

.tab-button:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.tab-button.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
    background: var(--bg-secondary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.breadcrumb-item {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.breadcrumb-item.active {
    color: var(--color-accent);
    font-weight: 600;
}

.breadcrumb-separator {
    color: var(--text-secondary);
    opacity: 0.5;
}

/* Quick Stats */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.2s ease;
}

.stat-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(77, 122, 239, 0.1);
}

.stat-icon {
    font-size: 2rem;
    opacity: 0.8;
}

.stat-info {
    flex: 1;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

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

.section-header h2 {
    margin: 0;
    flex: 1;
}

.section-help {
    background: rgba(77, 122, 239, 0.1);
    color: var(--color-accent);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    border: 1px solid rgba(77, 122, 239, 0.2);
    max-width: 300px;
}

.section-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.form-actions .btn-primary,
.form-actions .btn-secondary {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.form-actions .btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.form-actions .btn-secondary:hover {
    background: var(--border-color);
    transform: translateY(-1px);
}

/* About Management */
.about-management {
    max-width: 800px;
}

.about-management textarea {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    resize: vertical;
    min-height: 200px;
}

/* Settings Management */
.settings-management {
    max-width: 600px;
}

.settings-management input,
.settings-management textarea {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.settings-management textarea {
    line-height: 1.5;
    resize: vertical;
}

/* ==========================================
   Admin Panel - Categories Management
   ========================================== */

.categories-management {
    margin-bottom: 2rem;
}

.add-category {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.add-category input {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.add-category input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(77, 122, 239, 0.1);
}

.categories-list {
    display: grid;
    gap: 0.75rem;
}

.category-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.category-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-1px);
}

.category-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-name {
    font-weight: 600;
    color: var(--text-primary);
}

.category-count {
    background: var(--color-accent);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.category-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-edit-category {
    padding: 0.5rem 1rem;
    background: white;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-edit-category:hover {
    background: var(--color-accent);
    color: white;
    transform: translateY(-1px);
}

.btn-delete-category {
    padding: 0.5rem 1rem;
    background: #ff3b30;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-delete-category:hover {
    background: #ff2d55;
    transform: translateY(-1px);
}

.loading-categories {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-style: italic;
}

.no-categories {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Management Controls */
.management-controls {
    margin-bottom: 2rem;
}

.search-filter {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-filter input,
.search-filter select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.search-filter input {
    flex: 1;
    min-width: 200px;
}

.search-filter select {
    min-width: 150px;
}

.posts-list {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.post-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.post-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-1px);
}

.post-info {
    flex: 1;
}

.post-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.post-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-edit {
    padding: 0.5rem 1rem;
    background: white;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-edit:hover {
    background: var(--color-accent);
    color: white;
    transform: translateY(-1px);
}

.btn-delete {
    padding: 0.5rem 1rem;
    background: #ff3b30;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-delete:hover {
    background: #ff2d55;
    transform: translateY(-1px);
}

.loading-posts {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-style: italic;
}

.history-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.history-list {
    display: grid;
    gap: 0.75rem;
}

.history-item {
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.history-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

.history-action {
    font-weight: 500;
    color: var(--text-primary);
}

.no-history {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Responsive Admin */
@media (max-width: 768px) {
    .admin-tabs {
        gap: 0.25rem;
        margin-bottom: 1.5rem;
    }
    
    .tab-button {
        padding: 0.75rem 1rem;
        font-size: 0.8rem;
    }
    
    .tab-subtitle {
        display: none;
    }
    
    .quick-stats {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .section-help {
        max-width: none;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn-primary,
    .form-actions .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .add-category {
        flex-direction: column;
        align-items: stretch;
    }
    
    .add-category input {
        min-width: auto;
    }
    
    .search-filter {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-filter input,
    .search-filter select {
        min-width: auto;
    }
    
    .post-item {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .post-actions {
        justify-content: center;
    }
    
    .category-item {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .category-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .admin-tabs {
        gap: 0.125rem;
        padding: 0 0.5rem;
    }
    
    .tab-button {
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
    }
}