/* Portafolio Hero */
.portafolio-hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-black) 100%);
    text-align: center;
    position: relative;
}

.portafolio-hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(37, 211, 102, 0.08) 0%, transparent 60%);
}

.portafolio-hero-content { position: relative; z-index: 1; }

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    margin-bottom: 32px;
    transition: var(--transition);
}

.back-link:hover { gap: 12px; color: var(--color-primary-dark); }

.portafolio-title {
    font-size: clamp(40px, 5vw, 64px);
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.6s ease-out;
}

.portafolio-subtitle {
    font-size: 20px;
    color: var(--color-gray-light);
    max-width: 700px;
    margin: 0 auto;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

/* Filter Section */
.filter-section {
    padding: 40px 0;
    background: rgba(0, 0, 0, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: sticky;
    top: 80px;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.filter-buttons { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

.filter-btn {
    padding: 12px 28px;
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-primary);
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-black);
    box-shadow: var(--shadow-glow);
}

/* Projects Section */
.projects-section { padding: 80px 0; background: var(--color-dark); }

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

.project-card {
    background: var(--color-gray-dark);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    animation: fadeInUp 0.6s ease-out both;
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: rgba(37, 211, 102, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.project-image {
    position: relative;
    height: 240px;
    background: linear-gradient(135deg, #333 0%, #1a1a1a 100%);
    overflow: hidden;
}

.project-placeholder {
    width: 100%; height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-primary);
    opacity: 0.3;
    transition: var(--transition);
}

.project-card:hover .project-placeholder { opacity: 0.5; transform: scale(1.1); }

.project-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay { opacity: 1; }

.btn-view {
    padding: 14px 32px;
    background: var(--color-primary);
    color: var(--color-black);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 700;
    font-size: 15px;
    transition: var(--transition);
    transform: translateY(20px);
}

.project-card:hover .btn-view { transform: translateY(0); }

.btn-view:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px) !important;
}

.project-info { padding: 28px; }

.project-category {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(37, 211, 102, 0.1);
    color: var(--color-primary);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.project-title { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.project-description { color: var(--color-gray-light); line-height: 1.7; margin-bottom: 20px; font-size: 14px; }

.project-tech { display: flex; flex-wrap: wrap; gap: 8px; }

.tech-tag {
    padding: 5px 12px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-white);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* CTA Section */
.portafolio-cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-dark) 100%);
    text-align: center;
}

.cta-content { max-width: 700px; margin: 0 auto; }
.cta-title { font-size: clamp(32px, 4vw, 48px); font-weight: 800; margin-bottom: 20px; }
.cta-description { font-size: 18px; color: var(--color-gray-light); margin-bottom: 40px; }

/* Responsive */
@media (max-width: 768px) {
    .projects-grid { grid-template-columns: 1fr; }
    .filter-buttons { gap: 8px; }
    .filter-btn { padding: 10px 20px; font-size: 13px; }
    .portafolio-hero { padding: 120px 0 60px; }
    .portafolio-title { font-size: 36px; }
}

@media (max-width: 480px) {
    .filter-section { top: 70px; }
    .filter-buttons { flex-direction: column; width: 100%; }
    .filter-btn { width: 100%; }
    .project-image { height: 200px; }
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }
.project-card:nth-child(5) { animation-delay: 0.5s; }
.project-card:nth-child(6) { animation-delay: 0.6s; }
.project-card:nth-child(7) { animation-delay: 0.7s; }
.project-card:nth-child(8) { animation-delay: 0.8s; }
.project-card:nth-child(9) { animation-delay: 0.9s; }