:root {
    --primary-color: #3B82F6;
    --primary-rgb: 59, 130, 246;
    --secondary-color: #10B981;
    --secondary-rgb: 16, 185, 129;
    --accent-color: #F59E0B;
    --accent-rgb: 245, 158, 11;
}

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

/* Ensure HTML and BODY have no default spacing */
html, body { margin: 0; padding: 0; }

body {
    font-family: Inter, system-ui, sans-serif;
    line-height: 1.6;
    color: #1E293B;
    background-color: #ffffff;
    padding-top: 0; /* Navbar is fixed, hero section handles its own padding */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: all 0.3s ease;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: #1E293B;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-cta {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: rgba(59, 130, 246, 0.9);
    transform: translateY(-2px);
}

/* Mobile Navigation */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: 0.3s;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, rgba(59, 130, 246, 0.8) 100%);
    color: white;
    padding: calc(var(--nav-height, 80px) + 4rem) 0 4rem;
    margin-top: 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    display: grid;
    grid-template-columns: 60% 40%;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease-out;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-features {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.hero-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.hero-feature-icon {
    width: 24px;
    height: 24px;
    background: var(--accent-color);
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0.25rem;
}

.hero-feature-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.hero-feature-content p {
    font-size: 1rem;
    opacity: 0.8;
    margin: 0;
}

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

.hero-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* Problem-Solution Section */
.problem-solution {
    background: #F8FAFC;
    padding: 4rem 0;
}

.problem-solution-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.problem-side {
    padding: 2rem;
    border-left: 4px solid #EF4444;
    background: rgba(239, 68, 68, 0.05);
    border-radius: 8px;
}

.solution-side {
    padding: 2rem;
    border-left: 4px solid var(--secondary-color);
    background: rgba(16, 185, 129, 0.05);
    border-radius: 8px;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1E293B;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.25rem;
    color: #64748B;
}

/* Light headers for dark sections */
.stats-section .section-header h2,
.tech-section .section-header h2 {
    color: #FFFFFF;
}

.stats-section .section-header p,
.tech-section .section-header p {
    color: rgba(255, 255, 255, 0.8);
}

.problem-solution p {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* Services Section */
.services-section {
    background: white;
    padding: 4rem 0;
}

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

.service-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #F1F5F9;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(59, 130, 246, 0.15);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1E293B;
    margin-bottom: 1rem;
}

.service-card p {
    color: #64748B;
    line-height: 1.6;
}

/* Statistics Section */
.stats-section {
    background: #1E293B;
    color: white;
    padding: 5rem 0;
    text-align: center;
}

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

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Portfolio Section */
.portfolio-section {
    background: #F8FAFC;
    padding: 4rem 0;
}

.project-showcase {
    margin-top: 3rem;
}

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

.project-item:nth-child(even) {
    direction: rtl;
}

.project-item:nth-child(even) > * {
    direction: ltr;
}

.project-content h3 {
    font-size: 1.875rem;
    font-weight: 600;
    color: #1E293B;
    margin-bottom: 1rem;
}

.project-content p {
    font-size: 1.125rem;
    color: #64748B;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.project-image {
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    max-width: 100%;
    height: auto;
}

/* Testimonial Section */
.testimonial-section {
    background: white;
    padding: 4rem 0;
    text-align: center;
}

.testimonial-content {
    max-width: 800px;
    margin: 3rem auto 0;
    position: relative;
}

.testimonial-quote {
    font-size: 1.5rem;
    font-style: italic;
    color: #1E293B;
    line-height: 1.7;
    margin-bottom: 2rem;
    position: relative;
}

.testimonial-quote::before {
    content: '"';
    font-size: 4rem;
    color: var(--primary-color);
    position: absolute;
    top: -1rem;
    left: -2rem;
    font-family: serif;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.author-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1E293B;
    margin-bottom: 0.25rem;
}

.author-info p {
    color: #64748B;
    font-size: 1rem;
}

/* Technology Section */
.tech-section {
    background: #1E293B;
    color: white;
    padding: 4rem 0;
}

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

.tech-category {
    text-align: center;
}

.tech-category h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.tech-category p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 5rem 0;
}

.cta-container {
    display: grid;
    grid-template-columns: 60% 40%;
    gap: 4rem;
    align-items: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.cta-description {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.contact-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.contact-icon {
    width: 24px;
    height: 24px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.btn-primary:hover {
    background: rgba(245, 158, 11, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.3);
}

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

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

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.25rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: fadeInUp 0.8s ease-out;
}

/* Footer */
.footer {
    background: #1E293B;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

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

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .problem-solution-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

    .project-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .project-item:nth-child(even) {
        direction: ltr;
    }

    .tech-categories {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cta-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 0.5rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

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

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

/* Focus states */
.btn:focus,
.nav-link:focus,
.nav-cta:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Utility classes */
.text-center {
    text-align: center;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}

.responsive-image {
    max-width: 100%;
    height: auto;
}