:root {
    --primary-color: #D01616;
    --primary-hover: #A01111;
    --bg-color: #FFFFFF;
    --bg-light: #F8FAFC;
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --text-on-primary: #FFFFFF;
    --navbar-bg: #FFFFFF;
    
    --container-width: 1280px;
    --section-padding: 100px 0;
    --card-padding: 30px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 80px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-speed);
}

ul {
    list-style: none;
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.bg-light {
    background-color: var(--bg-light);
}

.btn-primary, .btn-nav {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: var(--text-on-primary);
    font-weight: 600;
    border-radius: 6px;
    border: 2px solid var(--primary-color);
    transition: all var(--transition-speed);
}

.btn-primary:hover, .btn-nav:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: var(--text-on-primary);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    background-color: transparent;
    color: var(--text-on-primary);
    font-weight: 600;
    border-radius: 6px;
    border: 2px solid var(--text-on-primary);
    transition: all var(--transition-speed);
}

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

.navbar {
    background-color: var(--navbar-bg);
    padding: 20px 0;
    position: fixed;
    top: 0;
    width: 100%;
    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;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-color);
}

.nav-logo {
    height: 40px;
    margin-right: 12px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a:not(.btn-nav) {
    font-weight: 500;
    color: var(--text-main);
}

.nav-links a:not(.btn-nav):hover {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 32px;
    cursor: pointer;
    color: var(--text-main);
}

.hero {
    height: 80vh;
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    color: var(--text-on-primary);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.services-section {
    padding: var(--section-padding);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--bg-color);
    padding: var(--card-padding);
    border-radius: 8px;
    border: 1px solid #E5E7EB;
    transition: all var(--transition-speed);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-color: var(--primary-color);
}

.service-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
}

.service-card p {
    color: var(--text-muted);
}

.portfolio-section {
    padding: var(--section-padding);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.portfolio-card {
    background: var(--bg-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: transform var(--transition-speed);
}

.portfolio-card:hover {
    transform: translateY(-8px);
}

.portfolio-img-placeholder {
    height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}

.portfolio-img-placeholder i {
    font-size: 5rem;
    opacity: 0.5;
}

.portfolio-info {
    padding: 25px;
}

.portfolio-info .tag {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(208, 22, 22, 0.1);
    color: var(--primary-color);
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 4px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.portfolio-info h3 {
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.tech-stack-section {
    padding: 80px 0;
    text-align: center;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}

.tech-item i {
    font-size: 4rem;
    color: var(--text-muted);
    transition: color var(--transition-speed), transform var(--transition-speed);
}

.tech-item:hover i {
    color: var(--primary-color);
    transform: scale(1.1);
}

.stats-section {
    padding: var(--section-padding);
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.stat-card {
    background-color: var(--bg-color);
    padding: 40px;
    border-radius: 8px;
    border-top: 4px solid var(--primary-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

.stat-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.stat-card h3 {
    font-size: 3rem;
    margin-bottom: 5px;
    color: var(--text-main);
}

.cta-banner {
    background: linear-gradient(135deg, var(--primary-color) 0%, #8A0E0E 100%);
    padding: 80px 20px;
    text-align: center;
    color: var(--text-on-primary);
}

.cta-banner h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.cta-banner p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.footer {
    padding: 60px 0 30px 0;
    background-color: #111827;
    color: #F3F4F6;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
    align-items: start;
}

.footer-logo {
    display: flex;
    align-items: center;
}

.footer-icon {
    height: 35px;
    margin-right: 10px;
}

.footer-nav-links, .footer-legal-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-nav-links a, .footer-legal-links a {
    color: #D1D5DB;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #374151;
    color: #9CA3AF;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--navbar-bg);
        flex-direction: column;
        padding: 20px 0;
        box-shadow: 0 10px 10px rgba(0,0,0,0.05);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.4s ease-in-out;
    }
    
    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }

    .nav-links li {
        width: 100%;
        text-align: center;
        margin: 10px 0;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-btns {
        flex-direction: column;
        padding: 0 20px;
    }

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