/* Variables et Reset */
:root {
    --primary-color: #ffffff;
    --secondary-color: #73affd;
    --accent-color: #55adff;
    --text-color: #ffffff;
    --text-light: #a0a0a0;
    --background: #121212;
    --background-alt: #1a1a1a;
    --card-bg: #1e1e1e;
    --border-color: #2d2d2d;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 10px 20px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background);
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: var(--container-width);
    margin: 0 auto;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--secondary-color);
    background-color: rgba(115, 170, 253, 0.1);
}

.menu-toggle {
    display: none;
}

/* Hero Section */
.hero {
    padding: 8rem 2rem 4rem;
    background-image: url('space.jpg');
    background-size: cover;
    min-height: 100vh;
    background-color: rgba(33, 33, 33, 0.52);;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--secondary-color);
    border: 1px solid var(--secondary-color);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

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

/* Skills Section */
.skills {
    padding: 6rem 2rem;
    background-color: var(--background-alt);
}

.skills h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.skill-card i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.skill-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Projects Section */
.projects {
    padding: 6rem 2rem;
    background-color: var(--background);
}

.projects h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.project-category {
    margin-bottom: 4rem;
}

.project-category h3 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.project-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.card-header {
    padding: 1.5rem;
    background-color: var(--background-alt);
    border-bottom: 1px solid var(--border-color);
}

.card-header h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background-color: var(--secondary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
}

.card-content {
    padding: 1.5rem;
}

.card-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* Contact Section */
.contact {
    padding: 6rem 2rem;
    background-color: var(--background-alt);
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(3, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.contact-item i {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.contact-item p {
    color: var(--text-light);
    margin-bottom: 0.5rem;
    text-decoration: none;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.contact-item a {
    text-decoration: none !important;
}

.contact-item a:hover {
    color: var(--secondary-color);
}

/* Footer */
footer {
    background-color: var(--background);
    color: white;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    color: white;
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-link:hover {
    color: var(--secondary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
    }

    .menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background-color: var(--primary-color);
        margin: 5px 0;
        transition: var(--transition);
    }

    .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);
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--background);
        padding: 1rem;
        flex-direction: column;
        align-items: center;
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        border-top: 1px solid var(--border-color);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}