:root {
    --hero-overlay-color: rgba(54, 69, 79, 0.7);
    --skills-overlay-color: rgba(0, 0, 0, 0.5);
    --projects-overlay-color: rgba(0, 0, 0, 0.5);
    --contact-overlay-color: rgba(0, 0, 0, 0.5);
}

html {
    scroll-behavior: smooth;
}

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

body {
    font-family: 'Fira Code', monospace;
    background-color: #f9f9f9;
    color: #222;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

.section {
    min-height: 45vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 60px 40px;
    position: relative;
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.7);
    transition: background 0.3s, color 0.3s;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
}

.logo {
    font-weight: bold;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
}

.navbar.light .nav-links a {
    color: #222;
}

.navbar.dark .nav-links a {
    color: #fff;
}

.hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
}

.code-text-white {
    color: white;
}

.hero {
    /*background: url('images/bg-hero.jpg') center/cover no-repeat;*/
    background-color: #36454F;
    color: white;
    text-align: center;
    height: 100vh;
}

.hero .overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--hero-overlay-color);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 4rem;
}

.hero h3 {
    font-size: 2rem;
}

.about {
    background: #f9f9f9;
}

.about-container {
    display: flex;
    gap: 40px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.about-img {
    flex-shrink: 0;
}

.about-text {
    flex-grow: 1;
}

.about-text p {
    font-size: 1.1rem;
    margin-top: 10px;
}

.about-img img {
    width: 250px;
    height: 250px;
    border-radius: 50%;
}

.skills {
    background: url('images/bg-skills.jpg') center/cover no-repeat;
}

.skills .overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--skills-overlay-color);
    z-index: 1;
}

.skills h2 {
    position: relative;
    z-index: 2;
    color: white;
}

.skills-list {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
    list-style: none;
}

.skills-list li {
    background: rgba(255,255,255,0.1);
    padding: 10px;
    text-align: center;
    border-radius: 5px;
    color: white;
    transition: transform 0.3s, background 0.3s;
}

.skills-list li:hover {
    transform: scale(1.05);
    background: rgba(255,255,255,0.3);
}

.quote {
    background: white;
    color: black;
    text-align: center;
    font-style: italic;
}

.projects {
    background: url('images/bg-projects.jpg') center/cover no-repeat;
}

.projects .overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--projects-overlay-color);
}

.projects h2 {
    color: white;
    position: relative;
    z-index: 2;
}

.projects-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.project-card {
    background-color: #000;
    background-image:
        radial-gradient(white, rgba(255,255,255,.2) 2px, transparent 40px),
        radial-gradient(white, rgba(255,255,255,.15) 1px, transparent 30px),
        radial-gradient(white, rgba(255,255,255,.1) 2px, transparent 40px),
        radial-gradient(rgba(255,255,255,.4), rgba(255,255,255,.1) 2px, transparent 30px);
    background-size: 550px 550px, 350px 350px, 250px 250px, 150px 150px;
    background-position: 0 0, 40px 60px, 130px 270px, 70px 100px;
    padding: 15px;
    border-radius: 8px;
    color: white;
    transition: transform 0.3s;
    min-height: 180px;
}

.project-card:hover {
    transform: rotate3d(1, 1, 0, 10deg);
}

.repo-link {
    color: white;
    text-decoration: underline;
    transition: color 0.3s;
}

.repo-link:hover {
    color: #21CBF3;
}

.resume-btn {
    position: absolute;
    right: 40px;
    top: 50%;
    transform: translateY(-50%);
}

.btn.primary {
    background: #0D47A1;
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
}

.contact {
    background: url('images/bg-contact.jpg') center/cover no-repeat;
}

.contact .overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--contact-overlay-color);
}

.contact-icons {
    position: relative;
    z-index: 2;
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 20px;
}

.contact-btn {
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: white;
    transition: background 0.3s, transform 0.3s;
}

.contact-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.1);
}

.contact-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    margin: auto;
    color: #fff;
}

.contact-message {
    color: white;
    font-size: 1.1rem;
    margin: 15px 0 25px;
    line-height: 1.6;
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Media Queries for Mobile Compatibility */
@media (max-width: 768px) {
    .nav-menu {
        position: absolute;
        top: 60px;
        left: 0;
        background: rgba(255, 255, 255, 0.9);
        width: 100%;
        height: 0;
        overflow: hidden;
        transition: height 0.3s ease-in-out;
    }

    .nav-menu.open {
        height: 250px;
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
    }

    .hamburger {
        display: block;
    }

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

    .hero h3 {
        font-size: 1.5rem;
    }

    .about-container {
        flex-direction: column;
        text-align: center;
    }

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

    .resume-btn {
        position: static;
        transform: none;
        margin-top: 20px;
    }

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