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

:root {
    /* Color Palette */
    --primary-blue: #0066cc;
    --primary-blue-dark: #004d99;
    --secondary-blue: #0088ff;
    --light-blue: #e6f2ff;
    --dark-gray: #1a1a1a;
    --medium-gray: #4a4a4a;
    --light-gray: #f5f5f5;
    --white: #ffffff;
    --border-color: #e0e0e0;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Transitions */
    --transition-speed: 0.3s;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--dark-gray);
    background-color: var(--white);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Navigation */
.navbar {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-sm);
    position: relative;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    height: 40px;
    width: auto;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--dark-gray);
    margin: 3px 0;
    transition: all var(--transition-speed);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    transition: color var(--transition-speed);
    position: relative;
}

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

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

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

/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo {
    max-width: 100%;
    height: auto;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 5px;
    transition: all var(--transition-speed);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
}

/* Section Styles */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-gray);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--medium-gray);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 10px;
    border: 2px solid var(--border-color);
    transition: all var(--transition-speed);
}

.service-card:hover {
    border-color: var(--primary-blue);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 102, 204, 0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.service-card p {
    color: var(--medium-gray);
}

/* Process Section */
.process {
    background-color: var(--light-gray);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.process-step {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 10px;
    text-align: center;
    transition: all var(--transition-speed);
}

.process-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--primary-blue);
    color: var(--white);
    font-size: 2rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
}

.process-step h3 {
    font-size: 1.5rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.process-step p {
    color: var(--medium-gray);
}

/* Tech Stack Section */
.tech-stack {
    background-color: var(--white);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-sm);
}

.tech-item {
    background-color: var(--light-blue);
    color: var(--primary-blue);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 25px;
    text-align: center;
    font-weight: 600;
    transition: all var(--transition-speed);
    border: 2px solid transparent;
}

.tech-item:hover {
    background-color: var(--primary-blue);
    color: var(--white);
    transform: scale(1.05);
    border-color: var(--primary-blue-dark);
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

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

.contact-info p {
    color: var(--medium-gray);
    margin-bottom: var(--spacing-sm);
}

.contact-email {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
}

.contact-email:hover {
    text-decoration: underline;
}

.contact-description {
    margin-top: var(--spacing-md);
}

/* Contact Form */
.contact-form {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.form-group textarea {
    resize: vertical;
}

.error-message {
    display: block;
    color: #d32f2f;
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    min-height: 1.2rem;
}

.form-message {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: 5px;
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-message.success {
    background-color: #e8f5e9;
    color: #2e7d32;
    display: block;
}

.form-message.error {
    background-color: #ffebee;
    color: #d32f2f;
    display: block;
}

/* Footer */
.footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: var(--spacing-md) 0;
}

.footer-container {
    padding: var(--spacing-md) var(--spacing-sm);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-logo {
    height: 40px;
    width: auto;
}

.footer-brand p {
    color: var(--light-gray);
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.footer-links a:hover {
    color: var(--secondary-blue);
}

/* Responsive Design - Mobile First */

/* Tablet (768px and up) */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: left var(--transition-speed);
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: var(--spacing-md) 0;
        gap: var(--spacing-sm);
    }

    .nav-menu.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-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-content {
        max-width: 100%;
    }

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

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

    .footer-brand {
        align-items: center;
    }

    .footer-links {
        justify-content: center;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --font-size-base: 14px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .tech-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }

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

    .brand-name {
        font-size: 1rem;
    }

    .logo {
        height: 32px;
    }
}

/* Performance optimizations */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}