/* ===== CSS Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0ea5e9;
    --dark: #0f172a;
    --dark-alt: #1e293b;
    --gray: #475569;
    --light-gray: #cbd5e1;
    --lighter-gray: #f1f5f9;
    --white: #ffffff;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--lighter-gray);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: -0.5px;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

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

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

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--lighter-gray) 0%, var(--white) 100%);
    padding-top: 80px;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--dark);
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--gray);
    margin-bottom: 2.5rem;
    font-weight: 400;
    line-height: 1.7;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: 0 4px 6px rgba(14, 165, 233, 0.2);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(14, 165, 233, 0.3);
    background: #0284c7;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 40px;
    border: 2px solid var(--gray);
    border-radius: 12px;
    opacity: 0.6;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--gray);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% { transform: translate(-50%, 0); opacity: 1; }
    50% { transform: translate(-50%, 10px); opacity: 0.3; }
}

/* ===== Sections ===== */
section {
    padding: 6rem 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 4rem;
    letter-spacing: -1px;
    color: var(--dark);
}

/* ===== Services Section ===== */
.services {
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.service-card {
    padding: 2.5rem;
    background: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: 12px;
    transition: var(--transition);
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-color);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--lighter-gray);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark);
}

.service-card p {
    color: var(--gray);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ===== Portfolio Section ===== */
.portfolio {
    background: var(--lighter-gray);
}

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

.portfolio-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.portfolio-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-image {
    transform: scale(1.1);
}

.portfolio-overlay h3 {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.portfolio-overlay p {
    color: var(--light-gray);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    transform: translateY(20px);
    transition: var(--transition);
    transition-delay: 0.05s;
}

.view-project {
    color: var(--primary-color);
    font-weight: 600;
    transform: translateY(20px);
    transition: var(--transition);
    transition-delay: 0.1s;
}

.portfolio-item:hover .portfolio-overlay h3,
.portfolio-item:hover .portfolio-overlay p,
.portfolio-item:hover .view-project {
    transform: translateY(0);
}

/* ===== About Section ===== */
.about {
    background: var(--white);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--gray);
    text-align: center;
}

/* ===== Contact Section ===== */
.contact {
    background: var(--lighter-gray);
}

.contact-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--light-gray);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.submit-button {
    padding: 1rem 2rem;
    background: var(--dark);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.submit-button:hover {
    background: var(--dark-alt);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.contact-info p {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.email-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: var(--transition);
}

.email-link:hover {
    opacity: 0.8;
}

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    color: var(--light-gray);
    padding: 3rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--dark-alt);
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--light-gray);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: var(--dark-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-gray);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* ===== Animations ===== */
.fade-in {
    animation: fadeIn 1s ease-out;
}

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

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .navbar .container {
        padding: 1rem 2rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .nav-links a {
        font-size: 0.9rem;
    }
    
    .hero {
        padding-top: 100px;
    }
    
    section {
        padding: 4rem 0;
    }
    
    .section-title {
        margin-bottom: 2.5rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .portfolio-item {
        min-height: 280px;
    }
    
    .portfolio-overlay {
        opacity: 1;
        background: rgba(15, 23, 42, 0.85);
    }
    
    .portfolio-overlay h3,
    .portfolio-overlay p,
    .view-project {
        transform: translateY(0);
    }
    
    .portfolio-overlay h3 {
        font-size: 1.5rem;
    }
    
    .portfolio-overlay p {
        font-size: 0.9rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .portfolio-item {
        min-height: 240px;
    }
    
    .portfolio-overlay {
        padding: 1.5rem;
    }
    
    .portfolio-overlay h3 {
        font-size: 1.3rem;
        margin-bottom: 0.3rem;
    }
    
    .portfolio-overlay p {
        font-size: 0.85rem;
        margin-bottom: 0.75rem;
    }
    
    .view-project {
        font-size: 0.9rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .service-card {
        padding: 2rem;
    }
}