/* Portfolio Modern Styling - Basé sur les couleurs de kx-app.net */
:root {
    /* Couleur principale - identité de la marque, boutons, titres */
    --primary-color: #3498db; /* Bleu principal */
    --primary-dark: #2980b9; /* Version plus foncée du bleu principal */
    --primary-light: #5dade2;
    --primary-gradient: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    
    /* Couleur secondaire - complément, icônes, fonds légers */
    --secondary-color: #2c3e50; /* Bleu marine profond */
    --secondary-dark: #1a252f;
    --secondary-light: #34495e;
    --secondary-gradient: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
    
    /* Couleur d'accent - CTA, boutons importants */
    --accent-color: #2ecc71; /* Vert émeraude */
    --accent-dark: #27ae60;
    --accent-light: #52be80;
    --accent-gradient: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);

    /* Couleur d'alerte - Cybersécurité */
    --alert-color: #e74c3c; /* Rouge */
    --alert-dark: #c0392b;
    --alert-light: #ec7063;
    --alert-gradient: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    
    /* Neutrals */
    --dark-bg: #1a252f;
    --dark-surface: #2c3e50;
    --dark-card: #34495e;
    --gray-light: #ecf0f1;
    --gray: #95a5a6;
    --dark-gray: #7f8c8d;
    --white: #ffffff;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
    --shadow-hover: 0 14px 28px rgba(0,0,0,0.25);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
}

/* Base Styles - Modern Dark Theme */
body {
    background-color: var(--dark-bg);
    color: var(--gray-light);
    font-family: 'Montserrat', sans-serif;
    margin: 0;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--white);
}

a {
    color: var(--primary-light);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-color);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.btn-secondary {
    display: inline-block;
    background-color: var(--secondary-color);
    background-image: var(--secondary-gradient);
    color: var(--white);
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 1rem;
    transition: all 0.3s;
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

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

/* Header Styles */
.portfolio-header {
    background-color: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    border-bottom: 2px solid var(--primary-color);
}

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

.portfolio-header nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    width: 100%;
    position: relative;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
    flex: 1;
    justify-content: center;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    cursor: pointer;
    padding: 10px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.menu-toggle:hover,
.menu-toggle:focus-visible {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    outline: none;
}

.menu-bar {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--white);
    border-radius: 4px;
}

.language-switcher {
    margin-left: auto;
}

.language-toggle {
    background: var(--accent-gradient);
    border: none;
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.language-toggle:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.nav-links a {
    color: var(--gray-light);
    font-weight: 500;
    text-decoration: none;
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

/* Hero Section */
.portfolio-hero {
    padding-top: 8rem;
    padding-bottom: var(--space-xl);
    background: var(--dark-surface);
    position: relative;
    overflow: hidden;
}

.portfolio-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(52, 152, 219, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(46, 204, 113, 0.1) 0%, transparent 50%);
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: var(--space-sm);
    background: linear-gradient(to right, var(--white), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
    word-wrap: break-word;
    word-break: keep-all;
    max-width: 100%;
    display: inline-block;
}

.hero-text h2 {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: var(--space-lg);
}

.hero-text p {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: var(--space-lg);
    color: var(--gray);
}

.social-profiles {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.social-profile {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    background-color: rgba(255, 255, 255, 0.1);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    overflow: hidden;
}

.social-profile .social-icon {
    width: 22px;
    height: 22px;
    object-fit: contain;
}

.social-profile.github {
    color: #ffffff;
}

.social-profile.github:hover {
    background-color: var(--secondary-color);
    box-shadow: 0 5px 15px rgba(44, 62, 80, 0.3);
    transform: translateY(-3px);
}

.social-profile.linkedin {
    color: #ffffff;
}

.social-profile.linkedin:hover {
    background-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
    transform: translateY(-3px);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.profile-container {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-color);
    box-shadow: 0 0 30px rgba(30, 136, 229, 0.3);
    background-image: url('images/kevin-profile.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Illustrations Section */
.illustrations-section {
    padding: var(--space-xl) 0;
    background: var(--dark-surface);
    position: relative;
    z-index: 1;
}

.illustrations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.illustration-card {
    background-color: var(--dark-card);
    border-radius: 12px;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.illustration-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-gradient);
}

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

.illustration {
    width: 150px;
    height: 150px;
    margin-bottom: var(--space-md);
}

.illustration svg {
    width: 100%;
    height: 100%;
}

.illustration-card h3 {
    color: var(--primary-light);
    margin-bottom: var(--space-sm);
}

.illustration-card p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Projects Section */
.portfolio-projects {
    padding: var(--space-xl) 0;
    background: var(--dark-bg);
    position: relative;
    z-index: 1;
}

.section-intro {
    max-width: 800px;
    margin: 0 auto var(--space-xl);
    text-align: center;
    color: var(--gray);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.portfolio-item {
    background-color: var(--dark-card);
    border-radius: 8px;
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-gradient);
}

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

.project-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--space-lg);
}

.portfolio-item h3 {
    font-size: 1.4rem;
    margin-bottom: var(--space-md);
}

.portfolio-item p {
    color: var(--gray);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.tag {
    background-color: rgba(30, 136, 229, 0.15);
    color: var(--primary-light);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-light);
    font-weight: 500;
    text-decoration: none;
    transition: gap 0.3s ease;
}

.project-link:hover {
    gap: 0.75rem;
}

/* Skills Section */
.skills-section {
    padding: var(--space-xl) 0;
    background: var(--dark-surface);
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.skills-category {
    margin-bottom: var(--space-lg);
}

.skills-category h3 {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--primary-color);
    color: var(--primary-light);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.skill-item {
    display: inline-block;
    background-color: rgba(30, 136, 229, 0.15);
    color: var(--white);
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    margin: 0.4rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid rgba(30, 136, 229, 0.3);
}

.skill-item:hover {
    background-color: rgba(30, 136, 229, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Experience Section */
.experience-section {
    padding: var(--space-xl) 0;
    background: var(--dark-surface);
    position: relative;
}

.experience-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 50%, rgba(43, 160, 71, 0.08) 0%, transparent 70%);
    z-index: 0;
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 var(--space-md);
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 18px;
    height: 100%;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-xl);
    padding-left: 60px;
}

.timeline-marker {
    position: absolute;
    top: 6px;
    left: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    background: var(--dark-card);
    box-shadow: 0 0 10px rgba(30, 136, 229, 0.5);
}

.timeline-date {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(30, 136, 229, 0.15);
    color: var(--primary-light);
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    color: var(--white);
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    color: var(--gray);
    font-weight: 400;
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
}

.timeline-details {
    padding-left: var(--space-lg);
    margin-top: var(--space-md);
    color: var(--gray-light);
}

.timeline-details li {
    margin-bottom: 0.75rem;
}

.timeline-details strong {
    color: var(--accent-light);
    font-weight: 600;
}

/* Education Section */
.education-section {
    padding: var(--space-xl) 0;
    background: var(--dark-bg);
    position: relative;
}

.education-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
}

.education-item {
    background-color: var(--dark-card);
    border-radius: 8px;
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    gap: var(--space-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.education-icon {
    color: var(--accent-color);
    font-size: 2rem;
    margin-right: var(--space-sm);
}

.education-content h3 {
    color: var(--white);
    margin-bottom: 0.25rem;
}

.education-content h4 {
    color: var(--gray-light);
    font-size: 0.95rem;
    font-weight: 400;
    margin-bottom: var(--space-md);
    line-height: 1.4;
}

.education-date {
    color: var(--primary-light);
    font-size: 0.85rem;
}

/* Contact Section */
.contact-section {
    padding: var(--space-xl) 0;
    background: var(--dark-bg);
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.contact-method {
    background-color: var(--dark-card);
    padding: var(--space-lg);
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-method:hover {
    transform: translateY(-5px);
}

.contact-method i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--space-md);
}

.contact-method h3 {
    margin-bottom: var(--space-sm);
    color: var(--white);
}

.contact-method p {
    color: var(--gray);
}

.contact-method a {
    color: var(--primary-light);
    text-decoration: none;
}

/* Footer styling is inherited from main CSS */

/* Responsive Design */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
    }

    .hero-text {
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .portfolio-header .container {
        padding: 0 var(--space-md);
    }

    .menu-toggle {
        display: inline-flex;
    }

    .nav-links {
        position: absolute;
        top: calc(100% + 0.75rem);
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        background: rgba(26, 37, 47, 0.98);
        padding: var(--space-lg);
        border-radius: 12px;
        box-shadow: var(--shadow-lg);
        gap: var(--space-md);
        border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-links.is-open {
        display: flex;
    }

    .nav-links a {
        width: 100%;
        display: block;
        padding: 0.35rem 0;
    }
}

@media (max-width: 768px) {
    .portfolio-header .container {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item {
        padding-left: 40px;
    }

    .timeline-marker {
        width: 16px;
        height: 16px;
        top: 5px;
        left: 3px;
    }
    
    .education-container {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
        margin-top: 2rem;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-container {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-text h2 {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        text-align: center;
    }
    
    .profile-container {
        width: 200px;
        height: 200px;
    }
}