/* CSS RESET & VARIABLES */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

:root {
    --cyber-blue: #00d4ff;
    --cyber-purple: #8b5cf6;
    --cyber-green: #10b981;
    --cyber-red: #ef4444;
    --bg-dark: #0a0a0f;
    --bg-card: rgba(15, 15, 23, 0.8);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --shadow-neon: 0 0 30px rgba(0, 212, 255, 0.3);
    --shadow-purple: 0 0 30px rgba(139, 92, 246, 0.3);
}

[data-theme="light"] {
    --bg-dark: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.9);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --glass-bg: rgba(255, 255, 255, 0.8);
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Loading Animation */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-icon {
    font-size: 4rem;
    color: var(--cyber-blue);
    animation: spin 2s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* Particles Canvas */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.1;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(20px);
    background: rgba(10, 10, 15, 0.95);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cyber-blue);
}

.logo-icon {
    width: 60px;
    height: 60px;
    border-radius: 18px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.logo-icon img {
    width: 10px;
    object-fit: cover;
    border: 2px solid var(--cyber-blue);
    box-shadow: var(--shadow-neon);
    transition: all 0.3s ease;
    cursor: pointer;
}

.logo-icon:hover {      
    filter: drop-shadow(0 0 10px var(--cyber-blue));
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--cyber-blue);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--cyber-blue);
    box-shadow: var(--shadow-neon);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: colomn;
    justify-content: center;
    align-items: center;
    padding-top: 60px;
    padding: 120px 20px;
    gap: 40px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    filter: brightness(0.4);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 10, 25, 0.8), rgba(10, 10, 15, 0.9));
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    width: 100%;
}

.hero-badge {
    background: linear-gradient(45deg, var(--cyber-blue), var(--cyber-purple));
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-neon);
    animation: badgeFloat 3s ease-in-out infinite;
}

@keyframes badgeFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.hero-title {
    font-family: 'Orbitron', monospace;
    font-size: clamp(2rem, 8vw, 3.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
}

.title-line {
    display: block;
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--cyber-blue) 0%, var(--cyber-purple) 50%, var(--cyber-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 3rem;
    color: var(--text-secondary);
    max-width: 500px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

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

.stat-number {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--cyber-blue), var(--cyber-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 0.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.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;
}

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

.btn-large {
    padding: 20px 40px;
    font-size: 1.1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--cyber-blue), var(--cyber-purple));
    color: white;
    box-shadow: var(--shadow-neon);
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--cyber-blue);
}

.btn-secondary:hover {
    background: var(--cyber-blue);
    transform: translateY(-3px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.hero-profile {
    flex: 0 0 350px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-image {
    position: relative;
    width: 300px;
    height: 300px;
}

.profile-image img {
    width: 320px;
    height: 320px;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid var(--cyber-blue);
    box-shadow: var(--shadow-neon);
    transition: all 0.5s ease;
}

.profile-image:hover img {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.profile-status {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: var(--cyber-green);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 5px 20px rgba(16, 185, 129, 0.4);
}

.status-online {
    width: 10px;
    height: 10px;
    background: var(--cyber-green);
    border-radius: 50%;
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    display: block;
    width: 40px;
    height: 60px;
    border: 2px solid var(--cyber-blue);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--cyber-blue);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(30px); opacity: 0; }
}

/* Section Common */
.section-padding {
    padding: 120px 0;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-subtitle {
    color: var(--cyber-blue);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: block;
}

.section-title {
    font-family: 'Orbitron', monospace;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    background: linear-gradient(135deg, var(--cyber-blue) 0%, var(--cyber-purple) 50%, var(--cyber-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-bio h3 {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--cyber-blue), var(--cyber-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.certifications {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
}

.cert-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 1rem 1.5rem;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
}

.cert-item:hover {
    background: var(--cyber-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow-neon);
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.skill-category h4 {
    font-family: 'Orbitron', monospace;
    margin-bottom: 1.5rem;
    color: var(--cyber-blue);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.skill-bars {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.skill-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.skill-bar span {
    min-width: 80px;
    font-weight: 500;
}

.skill-progress {
    flex: 1;
    height: 8px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-progress::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--cyber-blue), var(--cyber-purple));
    border-radius: 4px;
    animation: progress 2s ease-out forwards;
}

.skill-category:nth-child(1) .skill-progress[data-width="95%"]::before {
    width: 95%;
}

.skill-category:nth-child(1) .skill-progress[data-width="85%"]::before {
    width: 85%;
}

@keyframes progress {
    from { width: 0; }
}

.skill-tags {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.skill-tags span {
    background: var(--glass-bg);
    padding: 0.75rem 1.25rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
}

.skill-tags span img {
    width: 20px;
    height: 20px;
}

.skill-tags span:hover {
    background: var(--cyber-blue);
    transform: translateX(5px);
}

/* Blog Section */
.blog {
    background: rgba(10, 10, 15, 0.5);
    position: relative;
    overflow: hidden;
    padding-top: 146px;
}

.blog::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyber-blue), transparent);
}

.blog-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--glass-bg);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--cyber-blue);
    color: white;
    box-shadow: var(--shadow-neon);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2.5rem;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--cyber-blue), var(--cyber-purple), var(--cyber-green));
}

.blog-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-neon);
    border-color: var(--cyber-blue);
}

.blog-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.blog-category {
    background: var(--cyber-green);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.blog-title {
    font-family: 'Orbitron', monospace;
    font-size: 1.6rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.blog-excerpt {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.blog-link {
    color: var(--cyber-blue);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.blog-link:hover {
    text-shadow: 0 0 10px var(--cyber-blue);
}

/* Portfolio */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-card {
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.4s ease;
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-purple);
}

.portfolio-image {
    height: 220px;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-card:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-content {
    padding: 2rem;
}

.portfolio-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tag {
    background: var(--glass-bg);
    color: var(--cyber-blue);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Contact */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: start;
}

.contact-info h3 {
    font-family: 'Orbitron', monospace;
    margin-bottom: 2rem;
    color: var(--cyber-blue);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--glass-bg);
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: var(--cyber-blue);
    color: white;
    transform: translateX(10px);
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: var(--cyber-purple);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1.25rem;
    border: 2px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    background: var(--glass-bg);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--cyber-blue);
    box-shadow: var(--shadow-neon);
    background: rgba(255,255,255,0.1);
}

/* Footer */
.footer {
    background: rgba(5, 5, 10, 0.8);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 3rem 0 1.5rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}

.footer-social a {
    width: 50px;
    height: 50px;
    background: var(--glass-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--cyber-blue);
    transform: translateY(-5px) rotate(360deg);
    box-shadow: var(--shadow-neon);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 1024px) {
    .about-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--bg-dark);
        flex-direction: column;
        padding: 3rem 5%;
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 100px 5% 60px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-profile {
        flex: none;
        margin-top: 3rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .blog-filter {
        flex-direction: column;
        align-items: center;
    }
}