/* ========================================
   Reset & Base Styles
   ======================================== */

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

:root {
    --color-black: #0a0a0a;
    --color-dark-gray: #1a1a1a;
    --color-gray: #333333;
    --color-light-gray: #666666;
    --color-white: #ffffff;
    --color-off-white: #f5f5f5;
    --color-yellow: #ffd500;
    --color-yellow-dark: #e6c000;

    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;

    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary), sans-serif;
    background-color: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: 1.5rem 0;
    z-index: 1000;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.brand-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-black);
}

.brand-text .highlight {
    color: var(--color-yellow);
    font-size: 2rem;
}

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

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

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-yellow);
    transition: width 0.3s ease;
}

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

/* ========================================
   Hero Section
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-off-white) 100%);
}

.hero-layout {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 4rem;
}

.hero-image {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--color-black);
    letter-spacing: -0.02em;
}

.hero-title .highlight {
    color: var(--color-yellow);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-light-gray);
    margin-bottom: 2rem;
    font-weight: 400;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-gray);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--color-black);
    color: var(--color-white);
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 2px solid var(--color-black);
}

.cta-button:hover {
    background-color: var(--color-yellow);
    color: var(--color-black);
    border-color: var(--color-yellow);
    transform: translateY(-2px);
}

/* ========================================
   Section Titles
   ======================================== */

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 4rem;
    text-align: center;
    position: relative;
    color: var(--color-black);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--color-yellow);
}

/* ========================================
   Expertise Section
   ======================================== */

.expertise {
    padding: 8rem 0;
    background-color: var(--color-white);
}

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

.expertise-card {
    padding: 2.5rem;
    background-color: var(--color-off-white);
    border: 2px solid transparent;
    border-radius: 8px;
    transition: var(--transition);
}

.expertise-card:hover {
    border-color: var(--color-yellow);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--color-yellow);
}

.expertise-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-black);
}

.expertise-card p {
    color: var(--color-gray);
    line-height: 1.8;
}

/* ========================================
   Services Section
   ======================================== */

.services {
    padding: 8rem 0;
    background-color: var(--color-dark-gray);
    color: var(--color-white);
}

.services .section-title {
    color: var(--color-white);
}

.services-list {
    max-width: 900px;
    margin: 0 auto;
}

.service-item {
    display: flex;
    gap: 2rem;
    padding: 3rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.service-item:last-child {
    border-bottom: none;
}

.service-item:hover {
    transform: translateX(10px);
}

.service-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-yellow);
    font-family: var(--font-mono), monospace;
    min-width: 100px;
}

.service-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.service-content p {
    color: var(--color-light-gray);
    line-height: 1.8;
}

/* ========================================
   Tech Stack Section
   ======================================== */

.tech-stack {
    padding: 8rem 0;
    background-color: var(--color-white);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.tech-item {
    padding: 1.5rem;
    background-color: var(--color-off-white);
    text-align: center;
    font-weight: 600;
    color: var(--color-black);
    border: 2px solid transparent;
    border-radius: 4px;
    transition: var(--transition);
}

.tech-item:hover {
    border-color: var(--color-yellow);
    background-color: var(--color-yellow);
    transform: scale(1.05);
}

/* ========================================
   Contact Section
   ======================================== */

.contact {
    padding: 8rem 0;
    background-color: var(--color-black);
    color: var(--color-white);
}

.contact .section-title {
    color: var(--color-white);
}

.contact-layout {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 4rem;
}


.contact-content {
    text-align: left;
    max-width: 600px;
}

@media (max-width: 768px) {
    .contact-layout {
        flex-direction: column;
        gap: 2rem;
    }

    .contact-content {
        text-align: center;
    }
}

.contact-text {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    color: var(--color-light-gray);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.contact-link {
    color: var(--color-white);
    text-decoration: none;
    font-size: 1.125rem;
    font-weight: 600;
    position: relative;
    padding-bottom: 0.5rem;
    transition: var(--transition);
}

.contact-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-yellow);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.contact-link:hover {
    color: var(--color-yellow);
}

.contact-link:hover::after {
    transform: scaleX(1);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    padding: 2rem 0;
    background-color: var(--color-black);
    border-top: 1px solid var(--color-gray);
    color: var(--color-light-gray);
}

.footer .container {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.footer .container > a {
    position: absolute;
    left: 0;
}

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

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .hero-layout {
        flex-direction: column;
        gap: 2rem;
    }

    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

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

    .service-item {
        flex-direction: column;
        gap: 1rem;
    }

    .service-number {
        min-width: auto;
        font-size: 2rem;
    }

    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 1.5rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

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