:root {
    --primary: #0f2b4b;
    --primary-light: #153357;
    --primary-lighter: #1a4066;
    --secondary: #1e5eb7;
    --secondary-light: #2979d4;
    --accent: #1a6be0;
    --accent-light: #5b9cf5;
    
    --gradient-primary: linear-gradient(145deg, #0b2340 0%, #153357 50%, #1a3d63 100%);
    --gradient-secondary: linear-gradient(145deg, #1e5eb7 0%, #2979d4 100%);
    --gradient-active: linear-gradient(145deg, #1a6be0 0%, #2979d4 100%);
    
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    --bg-primary: #eff3f8;
    --bg-card: #ffffff;
    
    --text-primary: #1a2634;
    --text-secondary: #3d4f60;
    --text-light: #5a6d7e;
    
    --shadow-sm: 0 2px 6px rgba(0,0,0,0.05);
    --shadow-md: 0 6px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 28px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.12);
    
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --border-radius-md: 14px;
    --border-radius-lg: 20px;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    background: #e5ebf3;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}
@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}
@keyframes activeGlow {
    0%, 100% { box-shadow: 0 4px 16px rgba(26,107,224,0.25); }
    50% { box-shadow: 0 4px 24px rgba(26,107,224,0.4); }
}

.mobile-container {
    width: 100%;
    min-height: 100vh;
    background: var(--bg-primary);
    max-width: 480px;
    margin: 0 auto;
    box-shadow: var(--shadow-xl);
}

/* Navigation */
.top-nav {
    background: var(--gradient-primary);
    padding: 8px 10px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.nav-scroll {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}
.top-nav-item {
    background: transparent;
    border: 1.5px solid transparent;
    color: rgba(255,255,255,0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 4px;
    cursor: pointer;
    font-size: 10px;
    font-weight: 500;
    border-radius: 12px;
    min-height: 56px;
    transition: all 0.25s ease;
    position: relative;
}
.top-nav-item i { font-size: 16px; }
.top-nav-item:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
    transform: translateY(-1px);
}
.top-nav-item.active {
    background: var(--gradient-active);
    color: #fff;
    border-color: rgba(255,255,255,0.3);
    box-shadow: 0 4px 16px rgba(26,107,224,0.35);
    animation: activeGlow 3s infinite;
    transform: translateY(-2px);
    font-weight: 600;
}
.top-nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 3px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 3px;
    background: rgba(255,255,255,0.8);
    border-radius: 2px;
}

/* Hero */
.hero-profile {
    text-align: center;
    padding: 32px 20px;
    background: linear-gradient(180deg, #fff 0%, #f4f7fb 100%);
}
.profile-image-container {
    position: relative;
    width: 130px;
    height: 130px;
    margin: 0 auto 18px;
}
.profile-image-large {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #fff;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    position: relative;
    z-index: 2;
}
.profile-glow {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%,-50%);
    width: 150px; height: 150px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(41,121,212,0.12) 0%, transparent 70%);
    animation: pulse 4s infinite;
}
.hero-name {
    font-family: 'Poppins', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
}
.hero-title {
    font-size: 15px;
    color: var(--text-secondary);
}

/* Content */
.mobile-content { padding: 0 16px 85px; }
.content-section { display: none; animation: fadeInScale 0.45s ease; }
.content-section.active { display: block; }

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 21px;
    color: var(--primary);
    margin: 28px 0 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--gray-200);
    position: relative;
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 0;
    width: 50px; height: 2px;
    background: var(--gradient-secondary);
    border-radius: 1px;
}
.section-title i {
    color: var(--secondary);
    font-size: 19px;
    background: rgba(30,94,183,0.08);
    padding: 8px;
    border-radius: 10px;
}

/* Cards */
.modern-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 22px;
    margin-bottom: 18px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}
.modern-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    border-color: rgba(41,121,212,0.2);
    transform: translateY(-3px);
}
.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--gray-100);
}
.card-icon {
    width: 46px; height: 46px;
    background: rgba(30,94,183,0.06);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
    font-size: 19px;
}
.card-title {
    font-family: 'Poppins', sans-serif;
    font-size: 17px;
    color: var(--primary);
    font-weight: 600;
}
.modern-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; }
.modern-card strong { color: var(--text-primary); font-weight: 600; }
.modern-card em { color: var(--text-light); font-size: 13px; }

/* Contact */
.contact-intro { font-size: 13px; color: var(--text-light); margin-bottom: 18px; text-align: center; font-style: italic; }
.contact-buttons-vertical { display: flex; flex-direction: column; gap: 10px; }
.contact-btn-vertical {
    display: flex; align-items: center; gap: 14px;
    padding: 14px 16px;
    background: var(--gray-50);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    color: var(--text-primary);
    border: 1.5px solid var(--gray-200);
    transition: all 0.3s ease;
}
.contact-btn-vertical:hover {
    background: #fff;
    border-color: var(--secondary-light);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    transform: translateX(6px);
}
.contact-btn-icon-vertical {
    width: 46px; height: 46px;
    background: rgba(30,94,183,0.08);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: var(--secondary); font-size: 18px;
}
.contact-btn-info { flex: 1; }
.contact-btn-label { font-weight: 600; font-size: 15px; color: var(--primary); font-family: 'Poppins', sans-serif; }
.contact-btn-number { font-size: 13px; color: var(--text-light); }
.contact-btn-arrow { color: var(--gray-400); font-size: 14px; opacity: 0.6; transition: all 0.3s ease; }
.contact-btn-vertical:hover .contact-btn-arrow { color: var(--secondary); opacity: 1; transform: translateX(3px); }

/* Badges */
.achievement-badge {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 6px 14px;
    background: rgba(26,107,224,0.06);
    color: var(--secondary);
    border-radius: 20px;
    font-size: 12px; font-weight: 600;
    margin-bottom: 14px;
}
.project-date-mobile, .education-date-mobile, .experience-date-mobile, .volunteer-date-mobile {
    font-size: 13px; color: var(--secondary); font-weight: 600;
    margin-bottom: 14px; padding: 6px 14px;
    background: rgba(30,94,183,0.05);
    border-radius: 20px;
    display: inline-flex; align-items: center; gap: 7px;
}

/* Technologies */
.project-technologies-mobile { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tech-badge-mobile {
    background: var(--gray-100); color: var(--text-secondary);
    padding: 6px 12px; border-radius: 14px; font-size: 12px;
}

/* Proof images */
.proof-images-mobile { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--gray-200); }
.proof-section-title-mobile { font-size: 16px; color: var(--primary); margin-bottom: 16px; display: flex; align-items: center; gap: 9px; font-weight: 600; }
.proof-images-mobile-grid { display: flex; flex-direction: column; gap: 16px; }
.proof-image-container-mobile {
    background: #fff; border-radius: var(--border-radius-md);
    overflow: hidden; box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200); cursor: pointer;
    transition: all 0.3s ease;
}
.proof-image-container-mobile:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.proof-image-mobile { width: 100%; height: 300px; object-fit: contain; background: var(--gray-50); padding: 12px; }
.proof-image-caption-mobile { padding: 12px 16px; background: var(--gray-50); border-top: 1px solid var(--gray-200); }
.proof-image-caption-mobile strong { display: block; font-size: 14px; color: var(--primary); }

/* Modal */
.proof-modal-mobile {
    display: none; position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(15,23,42,0.96);
    z-index: 2000; justify-content: center; align-items: center;
    padding: 20px;
}
.proof-modal-mobile.active { display: flex; }
.proof-modal-content-mobile {
    width: 100%; max-width: 600px; max-height: 88vh;
    background: #fff; border-radius: var(--border-radius-lg);
    overflow: hidden; box-shadow: 0 25px 60px rgba(0,0,0,0.3);
    position: relative;
}
.proof-modal-image-mobile { width: 100%; max-height: 68vh; object-fit: contain; padding: 20px; }
.proof-modal-close-mobile {
    position: absolute; top: 12px; right: 12px;
    width: 40px; height: 40px;
    background: rgba(15,23,42,0.7); color: #fff;
    border: none; border-radius: 50%;
    cursor: pointer; display: flex;
    align-items: center; justify-content: center;
    z-index: 2001; font-size: 18px;
    transition: all 0.3s ease;
}
.proof-modal-close-mobile:hover {
    background: rgba(15,23,42,0.9);
    transform: scale(1.1);
}
.proof-modal-caption {
    padding: 16px 20px;
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    color: var(--text-primary);
    font-size: 14px;
    text-align: center;
}
.proof-modal-caption strong {
    display: block;
    font-size: 15px;
    color: var(--primary);
    margin-bottom: 4px;
}

/* Mission items */
.mission-item-mobile { margin-bottom: 16px; padding: 14px; background: var(--gray-50); border-radius: var(--border-radius-sm); border: 1px solid var(--gray-200); }
.mission-icon-mobile {
    width: 40px; height: 40px;
    background: rgba(30,94,183,0.06);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: var(--secondary); font-size: 16px;
    margin-right: 12px; float: left;
}
.mission-content-mobile h4 { font-family: 'Poppins', sans-serif; font-size: 15px; color: var(--primary); margin-bottom: 5px; }

/* Tools */
.tools-section-mobile { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--gray-200); }
.tools-section-mobile h5 { font-size: 15px; color: var(--primary); margin-bottom: 12px; }
.tools-grid-mobile { display: flex; flex-wrap: wrap; gap: 8px; }
.tool-badge-mobile { background: var(--gray-100); color: var(--text-secondary); padding: 5px 12px; border-radius: 14px; font-size: 12px; }

/* Interests */
.interests-grid-mobile { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 12px; }
.interest-item-mobile {
    background: var(--gray-50); border-radius: var(--border-radius-sm);
    padding: 16px; text-align: center;
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}
.interest-item-mobile:hover { background: #fff; border-color: rgba(41,121,212,0.2); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.interest-item-mobile i { color: var(--secondary); font-size: 22px; margin-bottom: 8px; display: block; }
.interest-item-mobile span { font-size: 13px; color: var(--text-primary); font-weight: 500; }

/* Skills */
.skills-tags-mobile { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.skill-tag-mobile {
    background: var(--gray-100); color: var(--text-secondary);
    padding: 7px 14px; border-radius: 16px; font-size: 13px;
    transition: all 0.2s ease;
}
.skill-tag-mobile:hover { background: rgba(41,121,212,0.06); color: var(--secondary); }
.skills-list-mobile { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.skill-item-mobile span { font-size: 14px; color: var(--text-primary); font-weight: 500; display: block; margin-bottom: 5px; }
.skill-bar { height: 8px; background: var(--gray-200); border-radius: 4px; overflow: hidden; }
.skill-fill { height: 100%; background: var(--gradient-secondary); border-radius: 4px; transition: width 1.4s ease; }

/* Languages */
.languages-mobile { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.language-item-mobile {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px;
    background: var(--gray-50);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}
.language-item-mobile:hover { background: #fff; border-color: rgba(41,121,212,0.2); box-shadow: var(--shadow-sm); transform: translateX(4px); }
.language-item-mobile img { width: 22px; border-radius: 3px; }
.language-item-mobile span { font-size: 14px; font-weight: 500; }

/* Task list */
.task-list { list-style: none; padding-left: 0; margin-top: 12px; }
.task-list li { padding: 8px 0 8px 26px; position: relative; color: var(--text-secondary); font-size: 14px; }
.task-list li:before {
    content: "✓"; position: absolute; left: 0; top: 8px;
    color: var(--secondary); font-weight: bold;
    width: 20px; height: 20px;
    background: rgba(30,94,183,0.08);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 11px;
}

/* Contact info */
.contact-info-mobile { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.contact-link-mobile {
    display: flex; align-items: center; gap: 10px;
    color: var(--text-secondary); text-decoration: none;
    font-size: 13px; padding: 10px 12px;
    border-radius: 8px; background: var(--gray-50);
    transition: all 0.3s ease;
}
.contact-link-mobile:hover { background: #fff; color: var(--secondary); transform: translateX(4px); box-shadow: var(--shadow-sm); }
.contact-link-mobile i { color: var(--secondary); width: 16px; }

/* Bottom bar */
.bottom-bar {
    position: fixed; bottom: 0;
    left: 50%; transform: translateX(-50%);
    width: 100%; max-width: 480px;
    background: var(--gradient-primary);
    padding: 12px 18px; z-index: 1000;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.12);
}
.bottom-bar-content { display: flex; justify-content: space-between; align-items: center; }
.portfolio-title-bottom { font-family: 'Poppins', sans-serif; font-size: 20px; font-weight: 700; color: #fff; }
.bottom-lang-selector { display: flex; gap: 8px; }
.bottom-lang-btn {
    display: flex; align-items: center; gap: 6px;
    padding: 8px 12px; border-radius: 10px;
    border: 1.5px solid rgba(255,255,255,0.2);
    background: transparent; color: rgba(255,255,255,0.8);
    cursor: pointer; font-size: 13px;
    transition: all 0.3s ease;
}
.bottom-lang-btn.active {
    background: var(--gradient-active); color: #fff;
    border-color: rgba(255,255,255,0.3);
    box-shadow: 0 4px 12px rgba(26,107,224,0.35);
}
.bottom-lang-btn:hover:not(.active) { background: rgba(255,255,255,0.08); color: #fff; }

/* ===== VERSION ORDINATEUR (écrans > 768px) ===== */
@media (min-width: 769px) {
    body { background: #e5ebf3; padding: 20px; }
    
    .mobile-container {
        max-width: 1100px;
        border-radius: var(--border-radius-lg);
        overflow: hidden;
    }
    
    .top-nav { 
        padding: 0; 
        position: fixed;
        top: 20px;
        left: 50%;
        transform: translateX(-50%);
        width: calc(100% - 40px);
        max-width: 1100px;
        z-index: 1000;
        border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    }
    .nav-scroll { display: flex; justify-content: center; gap: 0; max-width: 1100px; margin: 0 auto; }
    .top-nav-item {
        flex-direction: row; gap: 8px;
        padding: 14px 18px; font-size: 13px;
        min-height: auto; border-radius: 0;
        border: none; border-bottom: 3px solid transparent;
    }
    .top-nav-item i { font-size: 15px; }
    .top-nav-item:hover { background: rgba(255,255,255,0.05); border-bottom-color: rgba(255,255,255,0.3); transform: none; }
    .top-nav-item.active {
        background: rgba(255,255,255,0.1);
        border-bottom-color: var(--accent-light);
        box-shadow: none; animation: none; transform: none;
    }
    .top-nav-item.active::after { display: none; }
    
    .hero-profile {
        display: flex; align-items: center; justify-content: center;
        gap: 50px; padding: 40px 60px;
        background: linear-gradient(135deg, #fff 0%, #f0f4fa 100%);
        margin-top: 70px;
    }
    .profile-image-container { width: 160px; height: 160px; margin: 0; flex-shrink: 0; }
    .profile-image-large { width: 160px; height: 160px; border: 5px solid #fff; }
    .profile-glow { width: 180px; height: 180px; }
    .hero-text { text-align: left; }
    .hero-name { font-size: 32px; text-align: left; }
    .hero-title { font-size: 17px; text-align: left; }
    
    .mobile-content { padding: 30px 40px 50px; max-width: 1100px; margin: 0 auto; }
    .section-title { font-size: 24px; margin: 30px 0 22px; }
    .section-title i { font-size: 20px; padding: 10px; }
    
    .card-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
    .card-row-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    
    .card-skills .skills-list-mobile { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    
    #profil .interests-grid-mobile { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    #profil .interest-item-mobile { padding: 18px; }
    #profil .interest-item-mobile:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--secondary-light); background: #fff; }
    #profil .interest-item-mobile i { font-size: 24px; }
    #profil .interest-item-mobile span { font-size: 14px; }
    
    .card-languages .languages-mobile { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .card-languages .language-item-mobile { justify-content: center; padding: 18px; font-size: 15px; }
    .card-languages .language-item-mobile:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--secondary-light); background: #fff; }
    .card-languages .language-item-mobile img { width: 26px; }
    .card-languages .language-item-mobile span { font-size: 14px; }
    
    .proof-images-mobile-grid { flex-direction: row; gap: 20px; }
    .proof-image-container-mobile { flex: 1; }
    .proof-image-mobile { height: 350px; }
    
    .contact-buttons-vertical { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .contact-btn-vertical:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
    
    .modern-card { padding: 24px; }
    .modern-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .card-title { font-size: 18px; }
    .card-icon { width: 48px; height: 48px; font-size: 20px; }
    
    .bottom-bar { 
        max-width: 1100px; 
        padding: 14px 40px;
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    }
    .portfolio-title-bottom { font-size: 22px; }
    .bottom-lang-btn { padding: 10px 16px; font-size: 14px; }
}

@media (min-width: 1024px) {
    .mobile-content { padding: 40px 60px 60px; }
    .hero-profile { padding: 50px 80px; gap: 60px; }
    .profile-image-container { width: 180px; height: 180px; }
    .profile-image-large { width: 180px; height: 180px; }
    .hero-name { font-size: 36px; }
    .hero-title { font-size: 18px; }
    .proof-image-mobile { height: 400px; }
    .modern-card { padding: 28px; }
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }