/* Dark Professional Portfolio Design */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    --bg-dark: #0a1612;
    --bg-darker: #050b09;
    --accent-green: #00ff88;
    --text-light: #ffffff;
    --text-gray: #a0a0a0;
    --transition: all 0.3s ease;
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-primary);
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
}

/* Navigation */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 22, 18, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1.5rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 255, 136, 0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-green);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent-green);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-green);
    transition: var(--transition);
}

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

/* Hero Section - Split Screen */
.hero-split {
    display: grid;
    grid-template-columns: 45% 55%;
    min-height: 100vh;
    padding-top: 80px;
}

.hero-image-side {
    position: relative;
    background: var(--bg-darker);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.profile-image-container::before,
.profile-image-container::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
}

.profile-image-container::before {
    background: radial-gradient(circle at center, transparent 30%, var(--bg-darker) 80%);
}

.profile-image-container::after {
    background: radial-gradient(circle at center, rgba(0, 255, 136, 0.1) 0%, transparent 70%);
}

.profile-image-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-image {
    width: 70%;
    height: auto;
    object-fit: cover;
    filter: grayscale(20%) contrast(1.1);
    transition: var(--transition);
}

.hero-split:hover .profile-image {
    filter: grayscale(0%) contrast(1.15);
    transform: scale(1.02);
}

/* Animation Keyframes */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 255, 136, 0.2); }
    50% { box-shadow: 0 0 40px rgba(0, 255, 136, 0.4), 0 0 60px rgba(0, 255, 136, 0.2); }
}

/* Apply animations on load */
.hero-split {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-image-side {
    animation: float 6s ease-in-out infinite;
}

.hero-content-side > * {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.hero-label { animation-delay: 0.2s; }
.hero-title { animation-delay: 0.3s; }
.hero-description { animation-delay: 0.4s; }
.cta-button { animation-delay: 0.5s; }

/* Enhanced CTA Buttons */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2.5rem;
    background: var(--accent-green);
    color: var(--bg-dark);
    text-decoration: none;
    font-weight: 700;
    border-radius: 50px;
    transition: var(--transition);
    width: fit-content;
    font-size: 1.05rem;
}

.cta-button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 255, 136, 0.4), 0 0 20px rgba(0, 255, 136, 0.2);
}

/* Secondary CTA style */
.cta-button.secondary {
    background: transparent;
    color: var(--accent-green);
    border: 2px solid var(--accent-green);
    margin-left: 1rem;
}

.cta-button.secondary:hover {
    background: rgba(0, 255, 136, 0.1);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.2);
}

/* WhatsApp Floating Button */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 65px;
    height: 65px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: 0 5px 25px rgba(37, 211, 102, 0.4);
    z-index: 9999;
    transition: var(--transition);
    text-decoration: none;
    animation: pulse-glow 2s ease-in-out infinite;
}

.whatsapp-float:hover {
    transform: scale(1.15) translateY(-5px);
    box-shadow: 0 10px 40px rgba(37, 211, 102, 0.6);
}

.whatsapp-tooltip {
    position: absolute;
    right: 80px;
    background: white;
    color: var(--bg-dark);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .cta-button.secondary {
        margin-left: 0;
        margin-top: 1rem;
        display: inline-flex;
        width: 100%;
        justify-content: center;
    }
    
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
        font-size: 2rem;
    }
}

.hero-content-side {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 4rem 6rem 4rem 4rem;
    background: var(--bg-dark);
}

.hero-label {
    font-size: 0.85rem;
    color: var(--accent-green);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--text-light);
}

.hero-title .highlight {
    color: var(--accent-green);
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 3rem;
    max-width: 600px;
    line-height: 1.8;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: var(--accent-green);
    color: var(--bg-dark);
    text-decoration: none;
    font-weight: 700;
    border-radius: 50px;
    transition: var(--transition);
    width: fit-content;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

/* Content Sections */
.content-section {
    padding: 6rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-label {
    font-size: 0.85rem;
    color: var(--accent-green);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--text-light);
}

/* About Grid */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.about-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2.5rem;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--accent-green), #00cc6a);
    transform: translateX(-100%);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-card:hover::before {
    transform: translateX(100%);
}

.about-card:hover {
    background: rgba(0, 255, 136, 0.05);
    border-color: rgba(0, 255, 136, 0.4);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(0, 255, 136, 0.1);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    animation: float 4s ease-in-out infinite;
}

.about-card:hover .about-icon {
    animation: pulse-glow 2s ease-in-out infinite, float 4s ease-in-out infinite;
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
    font-weight: 700;
}

.about-card p {
    color: var(--text-gray);
    line-height: 1.8;
    font-size: 1rem;
}

/* Stats Progress Bar */
.about-card[data-progress]::after {
    content: attr(data-progress);
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    font-size: 0.85rem;
    color: var(--accent-green);
    font-weight: 600;
    background: rgba(0, 255, 136, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 3.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--accent-green) 0%, rgba(0, 255, 136, 0.3) 50%, rgba(0, 255, 136, 0.1) 100%);
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
    padding-left: 2.5rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }

.timeline-marker {
    position: absolute;
    left: -4.5rem;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--accent-green);
    border: 4px solid var(--bg-dark);
    border-radius: 50%;
    box-shadow: 0 0 0 6px rgba(0, 255, 136, 0.2), 0 0 20px rgba(0, 255, 136, 0.4);
    transition: var(--transition);
    z-index: 1;
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.2);
    box-shadow: 0 0 0 8px rgba(0, 255, 136, 0.3), 0 0 30px rgba(0, 255, 136, 0.6);
}

.timeline-content {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2.25rem;
    border-radius: 18px;
    transition: var(--transition);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--accent-green), transparent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.timeline-content:hover::before {
    transform: scaleX(1);
}

.timeline-content:hover {
    background: rgba(0, 255, 136, 0.05);
    border-color: rgba(0, 255, 136, 0.4);
    transform: translateX(12px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2), 0 0 25px rgba(0, 255, 136, 0.1);
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-weight: 700;
}

.timeline-content h4 {
    font-size: 1.2rem;
    color: var(--accent-green);
    margin-bottom: 1rem;
    font-weight: 600;
}

.timeline-period {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-green);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(0, 255, 136, 0.2);
}

.timeline-period::after {
    content: '';
    position: absolute;
    bottom: -5px; left: 50%;
    transform: translateX(-50%);
    width: 8px; height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    opacity: 0.5;
}

.timeline-content p {
    color: var(--text-gray);
    line-height: 1.8;
    font-size: 1rem;
}

/* Industry Icons for Experience Items */
.timeline-item[data-industry] .timeline-marker::before {
    content: attr(data-industry);
    position: absolute;
    left: -4.5rem;
    top: 5px;
    font-size: 0.75rem;
    background: var(--bg-dark);
    color: var(--accent-green);
    padding: 2px 8px;
    border-radius: 10px;
    border: 1px solid var(--accent-green);
}

/* Skills */
.skills-grid {
    display: grid;
    gap: 2rem;
}

.skill-category {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 18px;
    transition: var(--transition);
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--accent-green), #00cc6a);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.skill-category:hover::before {
    transform: scaleX(1);
}

.skill-category:hover {
    background: rgba(0, 255, 136, 0.05);
    border-color: rgba(0, 255, 136, 0.4);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2), 0 0 25px rgba(0, 255, 136, 0.1);
}

.skill-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    position: relative;
    padding-left: 1.5rem;
}

.skill-category h3::before {
    content: '';
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 6px; height: 6px;
    background: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-green);
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.badge {
    padding: 0.65rem 1.3rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.badge::before {
    content: '';
    position: absolute;
    top: 4px; left: 8px;
    width: 10px; height: 10px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.3;
}

.badge:hover {
    background: rgba(0, 255, 136, 0.15);
    border-color: var(--accent-green);
    color: var(--accent-green);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 255, 136, 0.2);
}

/* Badge Levels */
.badge[data-level="expert"] {
    background: rgba(0, 255, 136, 0.15);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.badge[data-level="expert"]::before {
    opacity: 1;
    background: var(--accent-green);
}

.badge[data-level="intermediate"]::before {
    opacity: 0.6;
}

.badge[data-level="beginner"] {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-gray);
}

.badge[data-level="beginner"]:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-light);
    color: var(--text-light);
}

/* Skill Category Count Badge */
.skill-category .category-count {
    position: absolute;
    top: 1rem; right: 1rem;
    background: var(--accent-green);
    color: var(--bg-dark);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: 12px;
}

/* Progress indicator for skill */
.badge::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    height: 2px;
    background: var(--accent-green);
    width: 0;
    transition: width 0.5s ease;
}

.badge:hover::after {
    width: 100%;
}

/* Certifications */
.cert-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--accent-green);
    padding: 2.5rem;
    border-radius: 18px;
    display: flex;
    gap: 2.5rem;
    align-items: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.cert-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--accent-green), #00cc6a);
    transform: scaleX(0);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.cert-card:hover::before {
    transform: scaleX(1);
}

.cert-card:hover {
    background: rgba(0, 255, 136, 0.05);
    border-color: rgba(0, 255, 136, 0.4);
    transform: translateX(15px) translateY(-3px);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3), 0 0 30px rgba(0, 255, 136, 0.15);
}

.cert-icon {
    font-size: 4rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.cert-icon::after {
    content: '🏆';
    position: absolute;
    top: -5px; right: -5px;
    font-size: 2rem;
    opacity: 0.3;
    animation: float 4s ease-in-out infinite;
}

.cert-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-weight: 700;
}

.cert-issuer {
    color: var(--accent-green);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.cert-details {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* View Certificate Button */
.view-cert-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-green);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    margin-left: auto;
}

.view-cert-btn:hover {
    background: var(--accent-green);
    color: var(--bg-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 255, 136, 0.3);
}

/* Certification Badge Number */
.cert-number {
    position: absolute;
    top: 1rem; right: 1rem;
    font-size: 0.85rem;
    color: var(--text-gray);
    font-family: monospace;
}

@media (max-width: 768px) {
    .cert-card {
        flex-direction: column;
        text-align: center;
        padding: 2rem;
    }
    
    .cert-icon {
        margin-bottom: 1.5rem;
    }
    
    .view-cert-btn {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }
}

/* Education */
.education-grid {
    display: grid;
    gap: 2rem;
}

.education-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--accent-green);
    padding: 2rem;
    border-radius: 18px;
    display: flex;
    gap: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.education-item::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--accent-green), #00cc6a);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.education-item:hover::before {
    transform: scaleX(1);
}

.education-item:hover {
    background: rgba(0, 255, 136, 0.05);
    border-color: rgba(0, 255, 136, 0.4);
    transform: translateX(12px) translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2), 0 0 25px rgba(0, 255, 136, 0.1);
}

.education-item .item-logo {
    width: 80px; height: 80px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
    transition: var(--transition);
}

.education-item:hover .item-logo {
    background: rgba(0, 255, 136, 0.1);
    transform: rotate(5deg) scale(1.1);
}

.education-period {
    min-width: 140px;
    font-weight: 700;
    color: var(--accent-green);
    font-size: 1.1rem;
    position: relative;
}

.education-period::after {
    content: '';
    position: absolute;
    bottom: -8px; right: 0;
    width: 4px; height: 4px;
    background: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-green);
}

.education-details h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-weight: 700;
}

.institution {
    color: var(--text-gray);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.status {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.status::before {
    content: '';
    position: absolute;
    left: 8px; top: 50%;
    transform: translateY(-50%);
    width: 8px; height: 8px;
    border-radius: 50%;
}

.status-en-curso {
    background: rgba(0, 255, 136, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(0, 255, 136, 0.3);
}

.status-en-curso::before {
    background: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
    animation: pulse 2s ease-in-out infinite;
}

.status-completo {
    background: rgba(0, 174, 239, 0.15);
    color: #00aeef;
    border: 1px solid rgba(0, 174, 239, 0.3);
}

.status-completo::before {
    background: #00aeef;
}

.status-incompleto {
    background: rgba(160, 160, 160, 0.15);
    color: var(--text-gray);
    border: 1px solid rgba(160, 160, 160, 0.3);
}

.status-incompleto::before {
    background: var(--text-gray);
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--accent-green); }
    50% { opacity: 0.5; box-shadow: 0 0 15px var(--accent-green); }
}

@media (max-width: 768px) {
    .education-item {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .item-logo {
        margin: 0 auto;
    }
    
    .education-period {
        min-width: auto;
    }
}

/* Footer */
.portfolio-footer {
    background: var(--bg-darker);
    padding: 3rem 4rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.portfolio-footer::before {
    content: '';
    position: absolute;
    top: -1px; left: 50%;
    transform: translateX(-50%);
    width: 100px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-green), transparent);
}

.portfolio-footer p {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 0; height: 2px;
    background: var(--accent-green);
    transition: width 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-green);
}

.footer-links a:hover::after {
    width: 100%;
}

/* Social Media Icons */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.social-link {
    width: 45px; height: 45px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: var(--bg-dark);
    transform: translateY(-5px) rotate(5deg);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 30px; left: 30px;
    width: 50px; height: 50px;
    background: var(--accent-green);
    color: var(--bg-dark);
    border: none;
    border-radius: 12px;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 5px 25px rgba(0, 255, 136, 0.4);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 35px rgba(0, 255, 136, 0.6);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-split {
        grid-template-columns: 1fr;
    }
    
    .hero-image-side {
        min-height: 50vh;
        order: 2;
    }
    
    .hero-content-side {
        padding: 3rem 2rem;
        order: 1;
        justify-content: center;
    }
    
    .top-nav {
        padding: 1.5rem 2rem;
    }
    
    .nav-menu {
        gap: 1.5rem;
    }
    
    .content-section {
        padding: 4rem 2rem;
    }
    
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skills-grid {
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .top-nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.75rem;
    }
    
    .nav-menu a {
        font-size: 0.8rem;
        padding: 0.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .cta-button,
    .cta-button.secondary {
        width: 100%;
        justify-content: center;
        margin-left: 0;
        margin-bottom: 1rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        padding-left: 2rem;
    }
    
    .timeline-marker {
        left: -3.5rem;
    }
    
    .education-item {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .cert-card,
    .education-item {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem;
    }
    
    .cert-icon,
    .item-logo {
        margin-bottom: 1rem;
    }
    
    .view-cert-btn {
        width: 100%;
        justify-content: center;
        margin-left: 0;
    }
    
    .footer-links {
        gap: 1.5rem;
        flex-direction: column;
    }
    
    .social-links {
        gap: 1rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background: var(--accent-green);
    color: var(--bg-dark);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 136, 0.3);
    border-radius: 6px;
    border: 2px solid var(--bg-dark);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-green);
}

/* Loading Skeleton */
@keyframes skeleton-loading {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}

.skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.06) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200px 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

/* Focus Visible */
:focus-visible {
    outline: 3px solid var(--accent-green);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid var(--accent-green);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .top-nav,
    .whatsapp-float,
    .scroll-top {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero-split {
        grid-template-columns: 1fr;
    }
}