/* =============================================
   DESIGN RESPONSIVE
============================================= */

/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-lg);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
    }
    
    /* Hero Section Mobile */
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
        padding: var(--spacing-lg);
    }
    
    .hero-image {
        order: -1;
    }
    
    .image-container {
        width: 250px;
        height: 250px;
    }
    
    .profile-image-about {
        width: 250px;
        height: 250px;
    }
    
    .name {
        font-size: var(--font-size-3xl);
        line-height: 1.1;
    }
    
    .role {
        font-size: var(--font-size-xl);
        min-height: 2rem;
    }
    
    .hero-description {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 200px;
        justify-content: center;
    }
    
    .social-link {
        width: 40px;
        height: 40px;
    }
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 600px) and (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .image-container {
        width: 300px;
        height: 300px;
    }
    
    .profile-image-about {
        width: 280px;
        height: 280px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .skills-categories {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
    .skills-categories {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* =============================================
   NAVIGATION RESPONSIVE
============================================= */

@media only screen and (max-width: 768px) {
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-logo h3 {
        font-size: var(--font-size-lg);
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: var(--spacing-2xl);
        gap: var(--spacing-xl);
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-xl);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-item {
        width: 100%;
        text-align: center;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-md);
        font-size: var(--font-size-lg);
        font-weight: var(--font-weight-semibold);
        border-radius: 10px;
        transition: all var(--transition-normal);
    }
    
    .nav-link:hover {
        background: var(--gradient-primary);
        color: var(--white);
        transform: translateY(-2px);
    }
    
    .theme-toggle {
        width: 35px;
        height: 35px;
        margin-left: var(--spacing-sm);
        margin-right: var(--spacing-sm);
    }
    
    .theme-toggle i {
        font-size: 16px;
    }
    
    .hamburger {
        display: flex;
        flex-direction: column;
        gap: 4px;
        cursor: pointer;
        z-index: 1001;
    }
    
    .hamburger .bar {
        width: 25px;
        height: 3px;
        background: var(--gray-700);
        border-radius: 2px;
        transition: all var(--transition-normal);
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
        background: var(--primary-color);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
        background: var(--primary-color);
    }
}

/* =============================================
   TIMELINE RESPONSIVE
============================================= */

@media only screen and (max-width: 768px) {
    .timeline::before {
        left: 20px;
        width: 2px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin: 0;
        margin-left: 50px;
        padding: var(--spacing-lg);
        text-align: left;
    }
    
    .timeline-dot {
        left: 20px;
        transform: translateX(-50%);
        width: 16px;
        height: 16px;
    }
    
    .timeline-date {
        left: 50px;
        transform: none;
        top: -35px;
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm);
    }
}

/* =============================================
   OPTIMISATIONS PERFORMANCES MOBILE
============================================= */

@media only screen and (max-width: 768px) {
    /* Réduire les animations coûteuses */
    .skill-progress::before {
        display: none;
    }
    
    /* Simplifier les transitions */
    * {
        transition-duration: 0.2s !important;
    }
    
    /* Réduire les ombres complexes */
    .project-card:hover,
    .skill-category:hover,
    .contact-item:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
    }
}