/* --- VARIABLE & RESET --- */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-glass: rgba(17, 24, 39, 0.7);
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --accent-color: #38bdf8;
    --accent-hover: #0284c7;
    --card-bg: #1e293b;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-color);
}

body {
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-subtitle {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-top: 5px;
}

/* --- BUTTONS --- */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(56, 189, 248, 0.4);
}

.btn-outline {
    border-color: var(--border-color);
    color: var(--text-color);
}

.btn-outline:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* --- NAVBAR --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

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

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- HERO SECTION --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
}

.badge {
    background-color: rgba(56, 189, 248, 0.1);
    color: var(--accent-color);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.hero-title {
    font-size: 3rem;
    margin: 15px 0 10px;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    height: 35px;
}

.hero-desc {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero-img {
    width: 320px;
    height: 380px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 2px solid var(--border-color);
    z-index: 2;
    position: relative;
}

.blob-bg {
    position: absolute;
    width: 320px;
    height: 380px;
    background: linear-gradient(135deg, var(--accent-color), #818cf8);
    border-radius: var(--radius);
    filter: blur(40px);
    opacity: 0.3;
}

/* --- ABOUT SECTION --- */
.about {
    background-color: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-img-box img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.about-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.about-content p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 25px;
}

.info-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 30px;
}

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

.info-item strong {
    color: var(--text-color);
}

/* --- SKILLS CAROUSEL --- */
.carousel-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
}

.carousel-track-container {
    overflow: hidden;
    width: 100%;
    padding: 20px 0;
}

.carousel-track {
    display: flex;
    gap: 20px;
    transition: transform 0.4s ease-in-out;
}

.skill-card {
    min-width: calc(33.333% - 14px);
    background-color: var(--card-bg);
    padding: 30px 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.skill-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.skill-card h4 {
    margin-bottom: 10px;
}

.skill-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.carousel-btn {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
}

.carousel-btn:hover {
    background-color: var(--accent-color);
    color: var(--bg-primary);
}

/* --- PROJECTS SECTION --- */
.projects {
    background-color: var(--bg-secondary);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 18px;
    border-radius: 20px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-info {
    padding: 20px;
}

.category-tag {
    font-size: 0.75rem;
    color: var(--accent-color);
    font-weight: 600;
    text-transform: uppercase;
}

.project-info h3 {
    margin: 8px 0;
    font-size: 1.2rem;
}

.project-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 20px;
}

.project-links {
    display: flex;
    gap: 10px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 6px;
    background-color: var(--accent-color);
    color: var(--bg-primary);
}

.btn-sm.outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

/* --- CERTIFICATES SECTION --- */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.cert-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.cert-card:hover {
    transform: scale(1.02);
}

.cert-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.cert-details {
    padding: 15px;
}

.cert-details h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.cert-details p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Lightbox Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.modal-content {
    max-width: 80%;
    max-height: 80%;
    border-radius: var(--radius);
    animation: zoom 0.3s ease;
}

.close-modal {
    position: absolute;
    top: 20px; right: 35px;
    color: #fff;
    font-size: 40px;
    cursor: pointer;
}

@keyframes zoom {
    from {transform: scale(0)} 
    to {transform: scale(1)}
}

/* --- CONTACT SECTION --- */
.contact {
    background-color: var(--bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.contact-info h3 {
    margin-bottom: 10px;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 25px;
    font-size: 0.9rem;
}

.info-details {
    margin-bottom: 30px;
}

.info-row {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.info-row i {
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px; height: 40px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--accent-color);
    color: var(--bg-primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-family: inherit;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.btn-block {
    width: 100%;
}

/* --- FOOTER & MISC --- */
.footer {
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-socials a {
    margin-left: 15px;
    color: var(--text-muted);
}

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

.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: var(--bg-primary);
    border: none;
    cursor: pointer;
    display: none;
    z-index: 999;
    transition: var(--transition);
}

/* Scroll Reveal Base Class */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 992px) {
    .skill-card {
        min-width: calc(50% - 10px);
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-secondary);
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        gap: 20px;
        display: none;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .hero-container, .about-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .hero-image-wrapper {
        order: -1;
    }

    .skill-card {
        min-width: 100%;
    }

    .info-list {
        grid-template-columns: 1fr;
    }

    .footer-container {
        flex-direction: column;
        gap: 15px;
    }
}