:root {
    --primary-dark: #0a0e17;
    --secondary-dark: #141922;
    --accent-blue: #2dd4bf;
    --accent-orange: #fb923c;
    --text-light: #e5e7eb;
    --text-muted: #9ca3af;
    --border-color: #1f2937;
    --card-bg: #1a1f2e;
}

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

body {
    font-family: 'Outfit', 'Segoe UI', sans-serif;
    background-color: var(--primary-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 0.75rem;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-decoration: none;
    letter-spacing: 0.05em;
    position: relative;
}

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

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

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

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    transition: color 0.3s ease;
}

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

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

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

.nav-links a.active {
    color: var(--accent-blue);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 8rem 2rem 4rem;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(45, 212, 191, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(251, 146, 60, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-text {
    max-width: 800px;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--accent-blue);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1rem;
    animation: fadeSlideIn 0.8s ease forwards;
    opacity: 0;
}

.hero h1 {
    animation: fadeSlideIn 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-description {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    animation: fadeSlideIn 0.8s ease 0.4s forwards;
    opacity: 0;
}

.accent-text {
    color: var(--accent-orange);
    font-weight: 600;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Buttons */
.btn-group {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    animation: fadeSlideIn 0.8s ease 0.6s forwards;
    opacity: 0;
}

.btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-blue);
    color: var(--primary-dark);
    border: 2px solid var(--accent-blue);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-orange);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-primary:hover::before {
    left: 0;
}

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

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

.btn-secondary:hover {
    border-color: var(--accent-blue);
    background: rgba(45, 212, 191, 0.1);
}

/* Section Styles */
.section {
    padding: 6rem 2rem;
    position: relative;
}

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

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

.section-subtitle {
    color: var(--accent-orange);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.section-title {
    margin-bottom: 1.5rem;
}

.section-description {
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-orange));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: 0 10px 40px rgba(45, 212, 191, 0.2);
}

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

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--text-light);
}

.card p {
    color: var(--text-muted);
    line-height: 1.7;
}

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

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.project-image {
    width: 100%;
    height: 250px;
    background: var(--secondary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-muted);
    position: relative;
    overflow: hidden;
}

.project-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.2) 0%, rgba(251, 146, 60, 0.2) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-image::after {
    opacity: 1;
}

.project-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card h3 {
    margin-bottom: 0.75rem;
    color: var(--text-light);
}

.project-description {
    color: var(--text-muted);
    margin-bottom: 1rem;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: auto;
}

.tag {
    padding: 0.4rem 0.8rem;
    background: rgba(45, 212, 191, 0.1);
    color: var(--accent-blue);
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid rgba(45, 212, 191, 0.3);
}

/* Contact Form */
.contact-container {
    max-width: 800px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-light);
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-submit {
    width: 100%;
}

/* Footer */
footer {
    background: var(--secondary-dark);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem 2rem;
    margin-top: 6rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--accent-blue);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p,
.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
}

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

.footer-bottom {
    max-width: 1400px;
    margin: 2rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
}

/* About Page Specific */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    width: 100%;
    height: 500px;
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--text-muted);
    position: relative;
    overflow: hidden;
}

.about-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.1) 0%, rgba(251, 146, 60, 0.1) 100%);
}

.about-text h2 {
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-blue);
    font-family: 'Orbitron', monospace;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Gallery Styles */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: #111827;
    border: 1px solid var(--border-color);
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(45, 212, 191, 0.3);
    border-color: var(--accent-blue);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform 0.3s ease;
    padding: 8px;
}

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

/* For photo-style images (non-technical), use cover */
.gallery-item.photo-fit img {
    object-fit: cover;
    padding: 0;
}

.pdf-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-decoration: none;
    transition: all 0.3s ease;
}

.pdf-link:hover i {
    transform: scale(1.1);
    color: var(--accent-blue) !important;
}

.pdf-link p {
    font-size: 0.9rem;
    text-align: center;
}

/* PDF Card Gallery Items */
.pdf-card {
    cursor: pointer !important;
    background: linear-gradient(135deg, #111827 0%, #1a2535 100%) !important;
}

.pdf-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(45, 212, 191, 0.3);
    border-color: var(--accent-blue);
}

.pdf-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    width: 100%;
    height: 100%;
}

.pdf-icon {
    font-size: 2.5rem;
    color: var(--accent-blue);
    transition: transform 0.3s ease, color 0.3s ease;
}

.pdf-card:hover .pdf-icon {
    transform: scale(1.15);
    color: var(--accent-orange);
}

.pdf-title {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    letter-spacing: 0.02em;
    max-width: 90%;
    line-height: 1.3;
}

.pdf-view-btn {
    background: transparent;
    color: var(--accent-blue);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    text-decoration: none;
    border: 1.5px solid var(--accent-blue);
    transition: all 0.3s ease;
    margin-top: 0.25rem;
    font-family: 'Outfit', sans-serif;
    letter-spacing: 0.03em;
}

.pdf-view-btn:hover {
    background: var(--accent-blue);
    color: var(--primary-dark);
    box-shadow: 0 4px 15px rgba(45, 212, 191, 0.3);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(45, 212, 191, 0.2);
    border: 2px solid var(--accent-blue);
    color: var(--accent-blue);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.5rem;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--accent-blue);
    color: var(--primary-dark);
}

.lightbox-close {
    top: 2rem;
    right: 2rem;
}

.lightbox-prev {
    left: 2rem;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .lightbox-prev {
        left: 1rem;
    }
    
    .lightbox-next {
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .card-grid[style*="repeat(3, 1fr)"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: rgba(10, 14, 23, 0.98);
        width: 100%;
        padding: 2rem;
        gap: 1.5rem;
        transition: left 0.3s ease;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-content[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    .hero-image {
        order: -1;
    }

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

    .btn-group {
        flex-direction: column;
    }

    .btn {
        text-align: center;
    }

    .card-grid,
    .project-grid,
    .card-grid[style*="repeat(3, 1fr)"] {
        grid-template-columns: 1fr !important;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 5px;
}

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