/* ============================================================================
   PÁGINA DE CERTIFICACIONES - ESTILOS OPTIMIZADOS
   =========================================================================== */

/* ===== HERO SECTION ===== */
.cert-hero {
    padding: var(--space-3xl) 0 var(--space-2xl);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.cert-hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.cert-hero-content .highlight {
    color: var(--accent-primary);
    position: relative;
    display: inline-block;
}

.cert-hero-content .highlight::after {
    content: "_";
    position: absolute;
    animation: blink 1s infinite;
}

.cert-hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-tertiary);
    max-width: 700px;
    margin: 0 auto var(--space-2xl);
    font-family: var(--font-terminal);
}

/* ===== ESTADÍSTICAS DEL HERO ===== */
.cert-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    flex-wrap: wrap;
}

.cert-stat-item {
    text-align: center;
}

.cert-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: var(--font-mono);
    display: block;
}

.cert-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== FILTROS ===== */
.cert-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    margin: var(--space-2xl) 0 var(--space-xl);
}

.filter-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-tertiary);
    padding: 0.5rem 1.2rem;
    border-radius: 30px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.filter-count {
    display: inline-block;
    background: var(--accent-glow-subtle);
    color: var(--accent-primary);
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 20px;
    margin-left: var(--space-xs);
}

.filter-btn.active .filter-count {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* ===== GRID DE CERTIFICACIONES ===== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--space-sm);
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.cert-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.cert-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-primary);
    opacity: 0;
    transition: var(--transition-base);
}

.cert-card:hover::before {
    opacity: 1;
}

.cert-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.cert-icon {
    width: 48px;
    height: 48px;
    background: var(--accent-glow-subtle);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cert-icon i {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.cert-institution {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
    background: var(--bg-tertiary);
    border-radius: 20px;
    color: var(--text-tertiary);
}

.cert-year-badge {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
    background: var(--accent-primary);
    color: white;
    border-radius: 20px;
    margin-left: auto;
}

.cert-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.cert-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.cert-date i {
    font-size: 0.7rem;
}

.cert-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-top: var(--space-md);
}

.cert-tag {
    font-size: 0.65rem;
    padding: 0.2rem 0.6rem;
    background: var(--bg-tertiary);
    border-radius: 20px;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

.cert-actions {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.cert-verify-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition-base);
    padding: var(--space-xs) 0;
}

.cert-verify-link:hover {
    gap: var(--space-md);
    color: var(--accent-hover);
}

.credential-id {
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-left: var(--space-xs);
}

.cert-verify-link:hover .credential-id {
    color: var(--accent-primary);
}

.no-results {
    text-align: center;
    padding: var(--space-3xl);
    color: var(--text-muted);
    grid-column: 1 / -1;
}

.no-results i {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.no-results p {
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

/* ============================================================================
   RUTA DE APRENDIZAJE - ESTILOS MEJORADOS (CORREGIDOS)
   =========================================================================== */

.learning-path-section {
    margin: var(--space-3xl) 0;
    padding: var(--space-2xl) 0;
    position: relative;
    overflow: hidden;
}

/* Fondo con malla cuadriculada tenue */
.learning-path-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--accent-glow-subtle) 1px, transparent 1px),
        linear-gradient(90deg, var(--accent-glow-subtle) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
    pointer-events: none;
    opacity: 0.2;
    z-index: 0;
}

/* Gradiente suave sobre la malla */
.learning-path-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 70% 30%, transparent 40%, var(--bg-primary) 95%);
    pointer-events: none;
    z-index: 0;
}

/* Header de sección - ESTILOS QUE FALTABAN */
.learning-path-section .section-header {
    position: relative;
    z-index: 2;
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.learning-path-section .section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    margin-bottom: var(--space-sm);
}

.learning-path-section .section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 3px;
    background: var(--accent-primary);
    border-radius: 3px;
}

.learning-path-section .section-subtitle {
    font-size: 1rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    margin-top: var(--space-lg);
    letter-spacing: 0.5px;
}

/* Timeline principal */
.path-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xl);
    max-width: 850px;
    margin: var(--space-2xl) auto 0;
    position: relative;
    z-index: 2;
}

/* Línea conectora central */
.path-timeline::before {
    content: '';
    position: absolute;
    left: 36px;
    top: 30px;
    bottom: 30px;
    width: 3px;
    background: linear-gradient(180deg, 
        var(--accent-primary) 0%, 
        var(--accent-primary) 40%,
        var(--accent-glow) 70%, 
        var(--border-color) 100%);
    border-radius: 3px;
    box-shadow: 0 0 6px var(--accent-glow);
    z-index: 0;
}

/* Cada item del timeline */
.path-item {
    display: flex;
    gap: var(--space-xl);
    position: relative;
    animation: fadeInUp 0.5s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

.path-item:nth-child(1) { animation-delay: 0.05s; }
.path-item:nth-child(2) { animation-delay: 0.1s; }
.path-item:nth-child(3) { animation-delay: 0.15s; }
.path-item:nth-child(4) { animation-delay: 0.2s; }
.path-item:nth-child(5) { animation-delay: 0.25s; }
.path-item:nth-child(6) { animation-delay: 0.3s; }

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

/* Marcadores */
.path-marker {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
    transition: all var(--transition-bounce);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(4px);
}

.path-marker i {
    font-size: 1.5rem;
    transition: var(--transition-base);
}

/* Estado completado */
.path-marker.completed {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover));
    border-color: var(--accent-primary);
    color: white;
    box-shadow: 0 0 20px var(--accent-glow);
}

.path-marker.completed i {
    animation: checkPop 0.4s ease-out;
}

@keyframes checkPop {
    0% { transform: scale(0); opacity: 0; }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

/* Estado activo */
.path-marker.active {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    animation: activeGlow 2s infinite;
    box-shadow: 0 0 20px var(--accent-glow);
    background: var(--bg-card);
}

@keyframes activeGlow {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 15px var(--accent-glow);
        border-color: var(--accent-primary);
    }
    50% {
        transform: scale(1.08);
        box-shadow: 0 0 30px var(--accent-primary);
        border-color: var(--accent-hover);
    }
}

/* Estado pendiente */
.path-marker.pending {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-muted);
}

.path-marker.pending i {
    opacity: 0.6;
}

/* Hover en marcadores */
.path-item:hover .path-marker {
    transform: scale(1.05);
    transition: transform 0.2s ease;
}

.path-item:hover .path-marker.pending {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.path-item:hover .path-marker.pending i {
    opacity: 1;
}

/* Contenido del timeline - Tarjetas */
.path-content {
    flex: 1;
    padding: var(--space-lg) var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-smooth);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}

/* Efecto de brillo al hacer hover */
.path-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        var(--accent-glow-subtle), 
        transparent);
    transition: left 0.6s ease;
    pointer-events: none;
}

.path-item:hover .path-content::before {
    left: 100%;
}

.path-item:hover .path-content {
    transform: translateX(8px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

/* Título */
.path-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.2px;
}

/* Descripción */
.path-content p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

/* Detalles del path */
.path-details {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
    flex-wrap: wrap;
    padding-top: var(--space-sm);
    border-top: 1px dashed var(--border-color);
}

.path-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.7rem;
    font-family: var(--font-mono);
    padding: 0.3rem 0.9rem;
    background: var(--accent-glow-subtle);
    border: 1px solid var(--accent-primary);
    border-radius: 30px;
    color: var(--accent-primary);
    transition: all var(--transition-base);
    cursor: default;
}

.path-badge i {
    font-size: 0.7rem;
}

.path-badge:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.path-date {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--bg-tertiary);
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
}

.path-date i {
    font-size: 0.7rem;
    color: var(--accent-primary);
}

/* Resumen Estadístico */
.path-summary {
    margin-top: var(--space-3xl);
    padding: var(--space-xl) var(--space-2xl);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 2;
    text-align: center;
}

.path-summary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, var(--accent-glow-subtle) 0%, transparent 80%);
    opacity: 0.4;
    pointer-events: none;
    border-radius: var(--border-radius-lg);
}

.summary-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.summary-item {
    text-align: center;
    padding: var(--space-sm) var(--space-xl);
    transition: var(--transition-base);
    cursor: default;
}

.summary-item:hover {
    transform: translateY(-3px);
}

.summary-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent-primary);
    font-family: var(--font-mono);
    line-height: 1.2;
    margin-bottom: var(--space-xs);
}

.summary-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

/* ===== FOOTER ACTIONS ===== */
.cert-footer-actions {
    text-align: center;
    margin: var(--space-2xl) 0;
}

.cert-footer-actions .btn {
    min-width: 200px;
}

/* ===== NAVEGACIÓN ACTIVA ===== */
.nav-links a.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

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

@media (max-width: 1024px) {
    .certs-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: var(--space-lg);
    }
    
    .path-timeline {
        max-width: 700px;
    }
    
    .path-timeline::before {
        left: 32px;
    }
    
    .path-marker {
        width: 52px;
        height: 52px;
    }
    
    .path-marker i {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    /* Hero */
    .cert-hero-content h1 {
        font-size: 2.2rem;
    }

    .cert-stats {
        gap: var(--space-xl);
    }

    .cert-stat-number {
        font-size: 1.8rem;
    }

    /* Filtros */
    .cert-filters {
        gap: var(--space-xs);
    }

    .filter-btn {
        padding: 0.3rem 1rem;
        font-size: 0.7rem;
    }

    /* Grid */
    .certs-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    /* Timeline responsive */
    .path-timeline {
        gap: var(--space-xl);
    }
    
    .path-timeline::before {
        left: 26px;
    }
    
    .path-marker {
        width: 44px;
        height: 44px;
    }
    
    .path-marker i {
        font-size: 1.2rem;
    }
    
    .path-content {
        padding: var(--space-md);
    }
    
    .path-content h3 {
        font-size: 1.1rem;
    }
    
    .path-content p {
        font-size: 0.85rem;
    }
    
    .path-details {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }
    
    .summary-stats {
        gap: var(--space-xl);
    }
    
    .summary-number {
        font-size: 1.8rem;
    }
    
    .learning-path-section .section-title {
        font-size: 1.75rem;
    }
    
    .learning-path-section .section-subtitle {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .cert-hero-content h1 {
        font-size: 1.8rem;
    }

    .cert-hero-subtitle {
        font-size: 1rem;
    }

    .cert-stat-number {
        font-size: 1.5rem;
    }

    .cert-stat-label {
        font-size: 0.7rem;
    }

    .cert-card {
        padding: var(--space-lg);
    }

    .cert-header {
        flex-wrap: wrap;
    }

    .cert-year-badge {
        margin-left: 0;
    }
    
    /* Timeline móvil pequeño */
    .path-timeline::before {
        left: 22px;
    }
    
    .path-marker {
        width: 38px;
        height: 38px;
    }
    
    .path-marker i {
        font-size: 1rem;
    }
    
    .path-content {
        padding: var(--space-sm) var(--space-md);
    }
    
    .path-content h3 {
        font-size: 0.95rem;
    }
    
    .path-content p {
        font-size: 0.75rem;
    }
    
    .path-badge {
        font-size: 0.6rem;
        padding: 0.2rem 0.6rem;
    }
    
    .path-date {
        font-size: 0.65rem;
    }
    
    .summary-number {
        font-size: 1.5rem;
    }
    
    .summary-label {
        font-size: 0.65rem;
    }
    
    .learning-path-section .section-title {
        font-size: 1.5rem;
    }
    
    .learning-path-section .section-subtitle {
        font-size: 0.8rem;
    }
}

/* ============================================================================
   ANIMACIONES GLOBALES
   =========================================================================== */

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

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