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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: #18181b;
    background: #fff;
    line-height: 1.6;
}

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e4e4e7;
    z-index: 1000;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 96px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.logo-icon {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.logo-text {
    font-size: 20px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 8px 0;
    font-size: 14px;
    font-weight: 500;
    color: #71717a;
    cursor: pointer;
    transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: #000;
    border-bottom-color: #000;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 96px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid #e4e4e7;
    padding: 1rem;
    z-index: 999;
}

.mobile-menu button {
    display: block;
    width: 100%;
    padding: 1rem;
    background: none;
    border: none;
    text-align: left;
    font-size: 16px;
    cursor: pointer;
}

.mobile-menu button:hover {
    background: #f4f4f5;
}

/* Main Content */
main {
    margin-top: 96px;
    min-height: calc(100vh - 96px);
}

/* Hero Section */
.hero {
    position: relative;
    height: calc(100vh - 96px);
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?q=80&w=2670&auto=format&fit=crop') center/cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.8), rgba(0,0,0,0.6), transparent);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 1280px;
    padding: 0 2rem;
    color: #fff;
}

.hero h1 {
    font-size: 4rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero h1 span {
    color: #a1a1aa;
}

.hero p {
    font-size: 1.5rem;
    color: #d4d4d8;
    margin-bottom: 2.5rem;
    max-width: 700px;
}

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

.btn {
    padding: 1rem 2rem;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: #fff;
    color: #000;
}

.btn-primary:hover {
    background: #e4e4e7;
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
}

/* About Section */
.about {
    padding: 6rem 2rem;
    background: #fff;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.divider {
    width: 80px;
    height: 4px;
    background: #000;
    margin-bottom: 2rem;
}

.about-img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

blockquote {
    border-left: 4px solid #d4d4d8;
    padding-left: 1.5rem;
    font-style: italic;
    font-size: 1.25rem;
    color: #3f3f46;
    margin: 2rem 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 6rem;
}

.service-card {
    padding: 2rem;
    border: 1px solid #e4e4e7;
    border-radius: 12px;
    background: #fafafa;
    transition: all 0.3s;
}

.service-card:hover {
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.service-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 1rem;
}

.expertise {
    background: #000;
    color: #fff;
    padding: 4rem;
    border-radius: 16px;
}

.expertise .logo-icon {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.expertise-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.expertise-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.expertise-item {
    display: flex;
    gap: 12px;
}

.check-icon {
    width: 24px;
    height: 24px;
    color: #71717a;
    flex-shrink: 0;
}

/* Projects Section */
.projects {
    padding: 6rem 2rem;
    background: #fafafa;
    min-height: 100vh;
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header .divider {
    margin: 0 auto 2rem;
}

.filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    border: 1px solid #e4e4e7;
    background: #fff;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-btn:hover, .filter-btn.active {
    background: #000;
    color: #fff;
    border-color: #000;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.project-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e4e4e7;
    transition: all 0.3s;
}

.project-card:hover {
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.project-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.project-content {
    padding: 1.5rem;
}

.project-category {
    display: inline-block;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.project-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 1rem 0;
    font-size: 14px;
    color: #71717a;
}

/* Contact Section */
.contact {
    padding: 6rem 2rem;
    background: #fafafa;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.contact-info {
    background: #000;
    color: #fff;
    padding: 3rem;
}

.contact-info .logo-icon {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: #27272a;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-form {
    padding: 3rem;
}

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

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

label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 14px;
}

input, textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #e4e4e7;
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
}

input:focus, textarea:focus {
    outline: none;
    border-color: #000;
    box-shadow: 0 0 0 2px rgba(0,0,0,0.1);
}

textarea {
    resize: none;
    min-height: 120px;
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: flex;
    gap: 12px;
}

.alert-success {
    background: #dcfce7;
    border: 1px solid #86efac;
    color: #166534;
}

.alert-error {
    background: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    background: #000;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-submit:hover {
    background: #27272a;
}

.btn-submit:disabled {
    background: #71717a;
    cursor: not-allowed;
}

/* Footer */
footer {
    background: #000;
    color: #fff;
    padding: 6rem 2rem 3rem;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h3 {
    margin-bottom: 1.5rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 1rem;
    color: #a1a1aa;
}

.footer-col a {
    color: #a1a1aa;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #fff;
}

.footer-col address {
    font-style: normal;
    color: #a1a1aa;
    font-size: 14px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1.5rem;
}

.footer-logo img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.footer-col p {
    color: #a1a1aa;
    font-size: 14px;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid #27272a;
    text-align: center;
    color: #71717a;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.25rem;
    }
    
    .about-grid, .expertise-grid, .contact-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid, .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}