:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #0f172a;
    --accent: #06b6d4;
    --text: #334155;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 700;
    color: var(--secondary);
    line-height: 1.2;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    border-bottom-color: var(--border);
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-weight: 800;
    font-size: 20px;
    border-radius: 10px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--secondary);
    transition: var(--transition);
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--secondary) 0%, #1e3a5f 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.hero-shape-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.hero-shape-2 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    bottom: -100px;
    left: -100px;
    animation: float 15s ease-in-out infinite reverse;
}

.hero-shape-3 {
    width: 200px;
    height: 200px;
    background: var(--primary-light);
    top: 50%;
    left: 50%;
    animation: float 10s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

.hero-content {
    position: relative;
    text-align: center;
    padding: 0 24px;
    max-width: 800px;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    color: white;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: white;
    color: var(--secondary);
    border-color: white;
}

.btn-full {
    width: 100%;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: white;
    border-radius: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(10px); opacity: 0.5; }
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 17px;
}

.about-content .btn {
    margin-top: 20px;
}

.about-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.about-card {
    background: var(--bg-alt);
    padding: 30px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.about-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.about-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.about-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.about-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* Services */
.services {
    background: var(--bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* Portfolio */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.portfolio-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.portfolio-icon {
    width: 70px;
    height: 70px;
    background: var(--bg-alt);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.portfolio-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.portfolio-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 12px;
}

.portfolio-card p {
    color: var(--text-light);
    font-size: 15px;
    margin-bottom: 20px;
}

.portfolio-status {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Contact */
.contact {
    background: var(--bg-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-intro {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 22px;
    height: 22px;
    color: white;
}

.contact-label {
    display: block;
    font-size: 13px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-value {
    display: block;
    font-size: 16px;
    font-weight: 500;
    color: var(--secondary);
    text-decoration: none;
    transition: var(--transition);
}

a.contact-value:hover {
    color: var(--primary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    font-size: 15px;
    font-family: inherit;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: white;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--secondary);
    padding: 40px 0;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-brand .logo-text {
    color: white;
}

.footer-text {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

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

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

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .section {
        padding: 60px 0;
    }
}

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

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
}