/* Variables CSS */
:root {
    --primary-color: #2d3436;
    --secondary-color: #0984e3;
    --accent-color: #00b894;
    --text-color: #2d3436;
    --bg-color: #f5f5f5;
    --card-bg: #ffffff;
    --gradient-start: #2d3436;
    --gradient-end: #0984e3;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --card-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --header-height: 80px;
}

/* Reset et styles de base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

/* Header et Navigation */
header {
    background-color: rgba(45, 52, 54, 0.9);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    transition: background-color 0.3s ease;
}

header.scrolled {
    background-color: rgba(45, 52, 54, 0.95);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 100%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.nav-menu {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-menu a:hover {
    color: var(--secondary-color);
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-menu a[aria-current="page"] {
    color: var(--secondary-color);
    background-color: rgba(255, 255, 255, 0.05);
}

/* Hamburger menu */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    margin-left: auto;
}

.hamburger-line {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
    transition: 0.3s ease;
}

/* Media Queries */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: rgba(0, 0, 0, 0.95);
        padding: 1rem;
    }

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

    .nav-menu a {
        width: 100%;
        text-align: center;
        padding: 1rem;
    }

    .hamburger.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Sections principales */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    margin-top: var(--header-height);
}

h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 3rem;
}

h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary-color);
}

h3 {
    color: var(--secondary-color);
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

/* Grille des projets */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.card-link {
    text-decoration: none;
    color: inherit;
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-content {
    padding: 1.5rem;
}

.card-title {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
}

.card-description {
    color: var(--text-color);
    font-size: 1rem;
}

/* Section des réalisations professionnelles */
.achievements-section {
    margin-top: 4rem;
}

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

.achievement-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.achievement-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
}

.achievement-card h3 i {
    color: var(--secondary-color);
}

.achievement-card p {
    margin-bottom: 1.5rem;
}

/* Boutons */
.button-group {
    text-align: center;
    margin-top: 2rem;
}

.bouton-link1 {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background-color: var(--secondary-color);
    color: var(--card-bg);
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition);
    font-weight: 500;
}

.bouton-link1:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

.bouton-link1 i {
    font-size: 1.2rem;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--card-bg);
    text-align: center;
    padding: 1.5rem;
    margin-top: 3rem;
}

footer a {
    color: var(--card-bg);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Media Queries */
@media screen and (max-width: 1024px) {
    main {
        padding: 1.5rem;
    }

    .projects-grid, .achievements-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media screen and (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--primary-color);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: var(--transition);
        padding: 2rem;
        box-shadow: -2px 0 5px rgba(0, 0, 0, 0.2);
    }

    .nav-menu.active {
        right: 0;
    }

    .hamburger.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    nav {
        padding: 0 1rem;
    }

    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }

    .project-card, .achievement-card {
        margin-bottom: 1.5rem;
    }
}

@media screen and (max-width: 480px) {
    main {
        padding: 1rem;
    }

    .card-content {
        padding: 1rem;
    }

    .card-title {
        font-size: 1.2rem;
    }
    
    .bouton-link1 {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
}

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

.projects-section, .achievements-section {
    animation: fadeIn 1s ease-out;
}

/* Optimisations des performances */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Styles spécifiques pour les pages de réalisations */
.presentation {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 2rem;
    margin-bottom: 2rem;
}

.presentation h1 {
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #3498db;
}

.presentation h2 {
    color: #34495e;
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem;
}

.presentation p {
    color: #555;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* Styles des cartes d'achievement */
.group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.achievement-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-5px);
}

.achievement-card h3 {
    color: #2c3e50;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.achievement-card h3 i {
    color: #3498db;
}

.achievement-card ul {
    list-style: none;
    padding-left: 1rem;
}

.achievement-card li {
    color: #555;
    margin-bottom: 0.5rem;
    position: relative;
}

.achievement-card li:before {
    content: "•";
    color: #3498db;
    position: absolute;
    left: -1rem;
}

/* Styles des boutons */
.bouton-link1 {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
    margin: 0.5rem 0;
}

.bouton-link1:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.bouton-link1 i {
    font-size: 1.1rem;
}

/* Groupe de boutons */
.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

/* Image */
.img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* Media Queries */
@media (max-width: 768px) {
    .presentation {
        padding: 1.5rem;
    }

    .presentation h1 {
        font-size: 1.8rem;
    }

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

    .button-group {
        flex-direction: column;
    }

    .bouton-link1 {
        width: 100%;
        justify-content: center;
    }
}