/* ============================================
   ROOT VARIABLES & RESETS
   ============================================ */

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

:root {
    --bg-dark: #0a0e27;
    --bg-darker: #06080f;
    --bg-card: #12172b;
    --text-primary: #e0e6ff;
    --text-secondary: #a8afc4;
    --accent: #7c3aed;
    --accent-light: #a78bfa;
    --border: #1e2749;
    --success: #10b981;
    --hover: #6d28d9;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

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

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    background-color: var(--bg-darker);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-light);
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--accent-light);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

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

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    border-bottom: 1px solid var(--border);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: center;
}

.hero-content {
    display: contents;
}

.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 800;
    letter-spacing: -1px;
}

.hero .subtitle {
    font-size: 1.5rem;
    color: var(--accent-light);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero .description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 12px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--accent-light);
    border: 1.5px solid var(--accent);
}

.btn-secondary:hover {
    background-color: var(--accent);
    color: white;
    transform: translateY(-2px);
}

/* Hero Images - 3 Images Horizontal on RIGHT */
.hero-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    height: 100%;
}

.hero-images img {
    width: 100%;
    height: 100%;
    border-radius: 8px;
    border: 2px solid var(--border);
    object-fit: cover;
    transition: all 0.3s ease;
}

/* .hero-images img:hover {
    border-color: var(--accent);
    transform: scale(1.02);
} */

/* Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .hero-text h1 {
        font-size: 3rem;
    }

    .hero-images {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero .subtitle {
        font-size: 1.2rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .hero-images {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }

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

    .hero .description {
        font-size: 0.95rem;
    }

    .hero-images {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    padding: 80px 0;
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border);
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--text-primary);
}

.about-content {
    max-width: 900px;
    margin: 0 auto 4rem;
}

.about-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.expertise-box {
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
}

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

.expertise-box i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.expertise-box h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.expertise-box p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ============================================
   PROJECTS SECTION
   ============================================ */

.projects {
    padding: 80px 0;
    background-color: var(--bg-darker);
    border-bottom: 1px solid var(--border);
}

.projects h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--text-primary);
}

.projects-list {
    display: grid;
    gap: 2.5rem;
}

.project-item {
    background-color: var(--bg-card);
    padding: 2.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.project-item:hover {
    border-color: var(--accent);
    transform: translateX(5px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    gap: 1rem;
}

.project-header h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    font-weight: 700;
}

.project-tag {
    background-color: var(--accent);
    color: white;
    padding: 0.35rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.project-details {
    margin: 1.5rem 0;
}

.project-details ul {
    list-style: none;
    margin-left: 1.5rem;
}

.project-details li {
    padding: 0.4rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.95rem;
}

.project-details li:before {
    content: "›";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
    font-size: 1.2rem;
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin: 1.5rem 0;
}

.tech-tag {
    background-color: rgba(124, 58, 237, 0.15);
    color: var(--accent-light);
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid rgba(124, 58, 237, 0.3);
}

.project-action {
    margin-top: 1.5rem;
}

.project-link {
    color: var(--accent-light);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.project-link:hover {
    gap: 0.8rem;
    color: var(--accent);
}

/* ============================================
   GALLERY SECTION
   ============================================ */

.gallery {
    padding: 90px 0;
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border);
}

.gallery h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    text-align: center;
    color: var(--text-primary);
}

.gallery-intro {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    border: 1px solid var(--border);
    background-color: var(--bg-card);
    aspect-ratio: 8/5;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(10, 14, 39, 0.95), transparent);
    padding: 1.5rem 1rem 1rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transform: translateY(10px);
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

/* ============================================
   CERTIFICATE SECTION
   ============================================ */

.certificate {
    padding: 80px 0;
    background-color: var(--bg-darker);
    border-bottom: 1px solid var(--border);
}

.certificate h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--text-primary);
}

.certificate-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.certificate-photo {
    position: relative;
}

.certificate-photo img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border);
    object-fit: cover;
}

.photo-caption {
    margin-top: 1rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.certificate-image img {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--border);
    object-fit: cover;
}

.certificate-info {
    text-align: center;
}

.certificate-info h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.certificate-info p {
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .certificate-content {
        grid-template-columns: 1fr;
    }
}
.certificate-info p {
    color: var(--text-secondary);
}

.ucu-link {
    margin-top: 1.5rem;
}

.ucu-link a {
    color: var(--accent-light);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.ucu-link a:hover {
    color: var(--accent);
    gap: 0.8rem;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
    padding: 80px 0;
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border);
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--text-primary);
}

.contact-intro {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1rem;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.contact-item {
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
}

.contact-item:hover {
    border-color: var(--accent);
}

.contact-item i {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.contact-item h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-item a {
    color: var(--accent-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--accent);
}

.social-links {
    text-align: center;
}

.social-links h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-icon {
    width: 50px;
    height: 50px;
    background-color: var(--bg-card);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: all 0.3s ease;
    text-decoration: none;
    border: 1px solid var(--border);
}

.social-icon:hover {
    background-color: var(--accent);
    color: white;
    transform: translateY(-3px);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
    background-color: var(--bg-darker);
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
}

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

@media (max-width: 768px) {
    .nav-links {
        gap: 1.5rem;
        font-size: 0.85rem;
    }

    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero .subtitle {
        font-size: 1.2rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .certificate-content {
        grid-template-columns: 1fr;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.1rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.75rem;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

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

    .hero .description {
        font-size: 0.95rem;
    }

    .project-header {
        flex-direction: column;
    }

    .project-tag {
        align-self: flex-start;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }
}