/* ============================================================================
   PORTFOLIO STYLE - Design moderne, épuré et responsive
   Palette: Bleu nuit, Vert émeraude, Violet sombre
   ========================================================================== */

/* Variables CSS */
:root {
    --primary-dark: #0f1419;
    --secondary-dark: #1a1f2e;
    --accent-primary: #1de9b6;
    --accent-secondary: #7c4dff;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #2a3f5f;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', 'Roboto', sans-serif;
    background: var(--primary-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Canvas - Fond réseau de neurones */
#neural-network-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.3;
}

/* Skip link (accessibilité clavier) — masqué jusqu'au focus */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--accent-primary);
    color: var(--primary-dark);
    padding: 0.75rem 1.25rem;
    text-decoration: none;
    font-weight: 600;
    z-index: 1000;
    border-radius: 0 0 8px 0;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid var(--accent-secondary);
    outline-offset: 2px;
}

/* Header fixe */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--secondary-dark) 0%, rgba(124, 77, 255, 0.1) 100%);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 0.75rem 0;
    box-shadow: 0 4px 20px rgba(29, 233, 182, 0.05);
    transition: opacity 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    opacity: 1;
    transform: translateY(0);
}

/* État caché du header */
.header.hidden {
    opacity: 0;
    transform: translateY(-100%);
    pointer-events: none;
}

/* État visible du header */
.header.visible {
    opacity: 0.95;
    transform: translateY(0);
    box-shadow: 0 8px 32px rgba(29, 233, 182, 0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.header-brand {
    text-decoration: none;
    flex-shrink: 0;
}

.header-title {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.5px;
    display: inline-block;
}

/* Navigation principale (desktop) */
.primary-nav .nav-list {
    list-style: none;
    display: flex;
    gap: 1.75rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 0.4rem 0;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.active {
    color: var(--accent-primary);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:focus-visible {
    outline: 2px solid var(--accent-secondary);
    outline-offset: 4px;
    border-radius: 2px;
}

/* Bouton burger (mobile) */
.nav-toggle {
    display: none;
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: 0.5rem;
    width: 44px;
    height: 44px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    z-index: 110;
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

.nav-toggle-bar {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Animation burger -> croix */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Responsive: burger menu mobile */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .header-title {
        font-size: 1.15rem;
    }

    .primary-nav {
        position: fixed;
        top: 0;
        right: 0;
        /* 100dvh = hauteur viewport réelle (sans barre navigateur iOS/Android) */
        height: 100dvh;
        height: 100vh; /* fallback anciens browsers */
        width: min(75vw, 280px);
        background: linear-gradient(180deg, var(--secondary-dark), var(--primary-dark));
        border-left: 1px solid var(--border-color);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
        transform: translateX(100%);
        transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        /* safe-area-inset-bottom : espace devant la barre home iOS */
        padding: 4.5rem 1.5rem max(1.5rem, env(safe-area-inset-bottom));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        z-index: 105;
        display: flex;
        flex-direction: column;
    }

    .primary-nav.open {
        transform: translateX(0);
    }

    .primary-nav .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
        width: 100%;
        flex: 1;
    }

    .nav-link {
        font-size: 1.05rem;
        display: block;
        width: 100%;
        padding: 0.4rem 0;
    }

    /* Très petits écrans : nav encore plus compacte */
    @media (max-width: 360px) {
        .primary-nav {
            width: 85vw;
            padding: 4rem 1.2rem 1.2rem;
        }
        .nav-link {
            font-size: 0.95rem;
        }
    }

    /* Overlay de fond lorsque menu ouvert */
    body.nav-open::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.55);
        z-index: 99;
        backdrop-filter: blur(2px);
    }

    body.nav-open {
        overflow: hidden;
    }
}

/* Main content */
.main-content {
    position: relative;
    z-index: 1;
    margin-top: 80px;
}

/* Sections générales */
.section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 2px;
}

/* ============================================================================
   PRÉSENTATION
   ========================================================================== */

.presentation-section {
    padding: 6rem 2rem 4rem;
    text-align: center;
}

.presentation-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.profile-frame {
    width: 220px;
    height: 220px;
    border: 3px solid var(--accent-primary);
    border-radius: 50%;
    padding: 10px;
    background: var(--secondary-dark);
    box-shadow: 
        0 0 30px rgba(29, 233, 182, 0.3),
        inset 0 0 20px rgba(29, 233, 182, 0.1);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.profile-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.presentation-text {
    flex: 1;
    min-width: 300px;
}

.presentation-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 700;
}

.presentation-text h2 .highlight {
    color: var(--accent-primary);
    text-shadow: 0 0 10px rgba(29, 233, 182, 0.3);
}

.subtitle {
    font-size: 1.5rem;
    color: var(--accent-secondary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ============================================================================
   À PROPOS
   ========================================================================== */

.about-card {
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.05) 0%, rgba(124, 77, 255, 0.05) 100%);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    box-shadow: 0 8px 32px rgba(29, 233, 182, 0.1);
    transition: var(--transition);
}

.about-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 8px 40px rgba(29, 233, 182, 0.15);
    transform: translateY(-5px);
}

.card-icon {
    font-size: 3rem;
    color: var(--accent-primary);
    flex-shrink: 0;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { 
        transform: scale(1);
        filter: drop-shadow(0 0 0 rgba(29, 233, 182, 0));
    }
    50% { 
        transform: scale(1.1);
        filter: drop-shadow(0 0 10px rgba(29, 233, 182, 0.5));
    }
}

.card-content p {
    margin-bottom: 1rem;
    line-height: 1.8;
    font-size: 1.05rem;
}

.card-content p:last-child {
    margin-bottom: 0;
}

/* ============================================================================
   À PROPOS — BANDEAU INFOS RAPIDES (localisation, disponibilité, niveau)
   ========================================================================== */

.about-info-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.06), rgba(124, 77, 255, 0.06));
    border: 1px solid var(--border-color);
    border-radius: 14px;
}

.info-bar-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.92rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.info-bar-item i {
    color: var(--accent-primary);
    font-size: 1rem;
}

/* Pastille verte clignotante "Disponible" */
.info-bar-item.info-bar-available {
    color: var(--accent-primary);
    font-weight: 600;
}

.pulse-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #10d876;
    box-shadow: 0 0 0 0 rgba(16, 216, 118, 0.7);
    animation: pulse-availability 2s infinite;
}

@keyframes pulse-availability {
    0% { box-shadow: 0 0 0 0 rgba(16, 216, 118, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(16, 216, 118, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 216, 118, 0); }
}

/* ============================================================================
   À PROPOS — SOUS-TITRE GÉNÉRIQUE (utilisé par "Mes certificats")
   ========================================================================== */

.subsection-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 1.5rem 0 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.subsection-title i {
    color: var(--accent-primary);
}

/* ============================================================================
   À PROPOS — BOUTON TÉLÉCHARGEMENT CV (CTA primaire)
   ========================================================================== */

.cv-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    margin-top: 1.8rem;
    padding: 0.85rem 1.8rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--primary-dark);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: 30px;
    box-shadow: 0 6px 20px rgba(29, 233, 182, 0.3);
    transition: var(--transition);
}

.cv-download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(29, 233, 182, 0.45);
}

.cv-download-btn:focus-visible {
    outline: 2px solid var(--accent-secondary);
    outline-offset: 3px;
}

.cv-download-btn i {
    font-size: 1rem;
}

/* ============================================================================
   À PROPOS — CHIFFRES-CLÉS (stats grid)
   ========================================================================== */

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.05), rgba(124, 77, 255, 0.05));
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 1.4rem 1rem;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(29, 233, 182, 0.15);
}

.stat-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
    display: block;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.3rem;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.3;
}

/* ============================================================================
   À PROPOS — TIMELINE DU PARCOURS ACADÉMIQUE
   ========================================================================== */

.studies-section {
    margin-top: 2rem;
    padding: 1.2rem 1.4rem 1.4rem;
    background: linear-gradient(135deg, rgba(124, 77, 255, 0.04), rgba(29, 233, 182, 0.04));
    border: 1px solid var(--border-color);
    border-radius: 14px;
}

.studies-section-title {
    justify-content: center;
    font-size: 1.05rem;
    margin: 0 0 1rem;
}

.studies-timeline {
    position: relative;
    margin: 0 auto;
    padding-left: 1.8rem;
    /* Taille réduite + scroll vertical */
    max-height: 170px;
    overflow-y: auto;
    overflow-x: hidden;
    /* Fondu en bas (cohérent avec les autres conteneurs scrollables) */
    mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 18px), transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 18px), transparent 100%);
}

.studies-timeline::-webkit-scrollbar {
    width: 4px;
}

.studies-timeline::-webkit-scrollbar-track {
    background: rgba(29, 233, 182, 0.05);
    border-radius: 10px;
}

.studies-timeline::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 10px;
}

/* Ligne verticale */
.studies-timeline::before {
    content: '';
    position: absolute;
    left: 0.35rem;
    top: 0.3rem;
    bottom: 0.3rem;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0.4;
    border-radius: 1px;
}

.study-timeline-item {
    position: relative;
    margin-bottom: 0.7rem;
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
}

.study-timeline-item:last-child {
    margin-bottom: 0;
}

/* Dot sur la ligne */
.study-timeline-item::before {
    content: '';
    position: absolute;
    left: -1.55rem;
    top: 0.45rem;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--secondary-dark);
    border: 2px solid var(--accent-primary);
    box-shadow: 0 0 0 2px var(--primary-dark);
    z-index: 2;
}

.study-timeline-year {
    flex-shrink: 0;
    min-width: 75px;
    font-weight: 700;
    color: var(--accent-primary);
    font-size: 0.78rem;
    padding-top: 0.25rem;
}

.study-timeline-card {
    flex: 1;
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.55rem 0.8rem;
    transition: var(--transition);
}

.study-timeline-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(3px);
    box-shadow: 0 4px 12px rgba(29, 233, 182, 0.12);
}

.study-timeline-card .study-diploma {
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 0.15rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    line-height: 1.3;
}

.study-timeline-card .study-diploma i {
    color: var(--accent-primary);
    font-size: 0.75rem;
}

.study-timeline-card .study-establishment {
    font-size: 0.74rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    line-height: 1.3;
}

.study-timeline-card .study-establishment i {
    color: var(--accent-secondary);
    font-size: 0.7rem;
}

/* ============================================================================
   À PROPOS — RESPONSIVE
   ========================================================================== */

@media (max-width: 768px) {
    .about-info-bar {
        flex-direction: column;
        gap: 0.7rem;
        align-items: flex-start;
    }

    .info-bar-item {
        font-size: 0.85rem;
    }

    .about-card {
        padding: 1.5rem;
        flex-direction: column;
        text-align: center;
    }

    .card-icon {
        margin: 0 auto;
    }

    .cv-download-btn {
        width: 100%;
        justify-content: center;
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .studies-section {
        padding: 1.2rem;
    }

    .studies-timeline {
        padding-left: 1.8rem;
        /* 2 items complets + 1/3 du 3ème (items ~90px sur mobiles avec diplômes longs) */
        max-height: 240px;
    }

    .study-timeline-item {
        flex-direction: column;
        gap: 0.4rem;
    }

    .study-timeline-item::before {
        left: -1.6rem;
        top: 0.4rem;
    }

    .study-timeline-year {
        min-width: auto;
        padding-top: 0;
    }
}

@media (max-width: 480px) {
    .about-stats {
        grid-template-columns: 1fr 1fr;
        gap: 0.7rem;
    }

    .stat-card {
        padding: 1rem 0.5rem;
    }

    .stat-number {
        font-size: 1.6rem;
    }

    .stat-label {
        font-size: 0.72rem;
    }
}

/* ============================================================================
   EXPÉRIENCES PROFESSIONNELLES
   ========================================================================== */

.experiences-section {
    background:
        radial-gradient(ellipse 60% 40% at 50% -5%, rgba(255, 255, 255, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 0%, rgba(29, 233, 182, 0.11) 0%, transparent 55%),
        radial-gradient(ellipse at 20% 100%, rgba(124, 77, 255, 0.11) 0%, transparent 55%),
        linear-gradient(135deg, rgba(29, 233, 182, 0.05) 0%, rgba(124, 77, 255, 0.05) 100%);
}

.experiences-wrapper {
    width: 100%;
}

/* ============================================================================
   BASCULE VUE TABS / TIMELINE
   ========================================================================== */

.experiences-view-switch {
    display: inline-flex;
    margin: 0 auto 1.5rem;
    padding: 0.25rem;
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.08) 0%, rgba(124, 77, 255, 0.08) 100%);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    gap: 0.25rem;
}

/* Centrer le groupe au-dessus de la section */
.experiences-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.experiences-wrapper > .view-pane {
    width: 100%;
}

.view-switch-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.2rem;
    background: transparent;
    border: 0;
    border-radius: 25px;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.view-switch-btn:hover {
    color: var(--text-primary);
}

.view-switch-btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

.view-switch-btn.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(29, 233, 182, 0.25);
}

.view-switch-btn i {
    font-size: 0.95rem;
}

/* ============================================================================
   VUE CHRONOLOGIQUE (TIMELINE)
   ========================================================================== */

.experiences-timeline {
    position: relative;
    max-width: 720px;
    margin: 0 auto;
    padding: 1rem 0 2rem;
    max-height: 500px;
    overflow-y: auto;
    /* Fondu en bas (cohérence avec autres conteneurs scrollables) */
    mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
}

/* Ligne verticale qui parcourt toute la timeline */
.experiences-timeline::before {
    content: '';
    position: absolute;
    left: 1.7rem;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0.4;
    border-radius: 1px;
}

/* Marqueur d'année (séparateur visuel + ancre temporelle) */
.timeline-year-marker {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0 1rem;
    padding-left: 0.5rem;
}

.timeline-year-marker:first-child {
    margin-top: 0;
}

.timeline-year-marker::before {
    content: '';
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    box-shadow: 0 0 0 4px var(--primary-dark), 0 0 18px rgba(29, 233, 182, 0.5);
    position: relative;
    z-index: 2;
}

.timeline-year-marker .year-label {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: 1px;
}

/* Item d'expérience dans la timeline */
.timeline-item {
    position: relative;
    margin: 0 0 1rem 3.2rem;
    padding-left: 0.5rem;
}

/* Point sur la ligne pour chaque expérience */
.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.6rem;
    top: 1.1rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--secondary-dark);
    border: 2px solid var(--accent-primary);
    box-shadow: 0 0 0 3px var(--primary-dark);
    z-index: 2;
}

/* Réinitialiser le hover translateY de la carte (incompatible avec la timeline) */
.timeline-item .experience-card {
    margin: 0;
    animation: slideIn 0.5s ease-out;
}

.timeline-item .experience-card:hover {
    transform: translateX(4px);
}

/* Masquage des panneaux en fonction de la vue active */
.experiences-wrapper .view-pane[hidden] {
    display: none !important;
}

/* Responsive : timeline plus compacte sur mobile */
@media (max-width: 768px) {
    .experiences-view-switch {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .view-switch-btn span {
        font-size: 0.82rem;
    }

    .experiences-timeline {
        max-height: 400px;
    }

    .experiences-timeline::before {
        left: 1.2rem;
    }

    .timeline-year-marker {
        gap: 0.8rem;
    }

    .timeline-year-marker::before {
        width: 22px;
        height: 22px;
        box-shadow: 0 0 0 3px var(--primary-dark), 0 0 14px rgba(29, 233, 182, 0.4);
    }

    .timeline-item {
        margin-left: 2.5rem;
    }

    .timeline-item::before {
        left: -1.4rem;
        top: 0.9rem;
    }
}

.experiences-columns {
    display: grid;
    grid-template-columns: 20% 1fr;
    gap: 2rem;
    height: 380px;
}

/* Colonne gauche - Années */
.experiences-years-column {
    background: linear-gradient(135deg, rgba(124, 77, 255, 0.08) 0%, rgba(29, 233, 182, 0.08) 100%);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 1.5rem;
    overflow-y: auto;
    overflow-x: hidden;
    /* Fondu en bas pour signaler du contenu scrollable */
    mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
}

/* Colonne droite - Détails */
.experiences-details-column {
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.05) 0%, rgba(124, 77, 255, 0.05) 100%);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 1.5rem;
    overflow-y: auto;
    overflow-x: hidden;
    /* Fondu en bas pour signaler du contenu scrollable */
    mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
}

/* Scrollbar personnalisée et moderne */
.experiences-years-column::-webkit-scrollbar,
.experiences-details-column::-webkit-scrollbar {
    width: 6px;
}

.experiences-years-column::-webkit-scrollbar-track,
.experiences-details-column::-webkit-scrollbar-track {
    background: rgba(29, 233, 182, 0.05);
    border-radius: 10px;
}

.experiences-years-column::-webkit-scrollbar-thumb,
.experiences-details-column::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 10px;
    transition: var(--transition);
}

.experiences-years-column::-webkit-scrollbar-thumb:hover,
.experiences-details-column::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--accent-secondary), var(--accent-primary));
    box-shadow: 0 0 10px rgba(29, 233, 182, 0.4);
}

/* Années */
.years-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.year-item {
    padding: 0.85rem 0.5rem;
    background: var(--secondary-dark);
    /* Reset des bordures par défaut du <button> avant d'appliquer border-left */
    border: 0;
    border-left: 3px solid var(--accent-primary);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
    /* Hérite de la typographie de la page (le <button> utilise sinon le font système) */
    font-family: inherit;
    width: 100%;
}

.year-item:focus-visible {
    outline: 2px solid var(--accent-secondary);
    outline-offset: 2px;
}

.year-item:hover {
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.1) 0%, rgba(124, 77, 255, 0.1) 100%);
    border-left-color: var(--accent-secondary);
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(29, 233, 182, 0.2);
}

.year-item.active {
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.2) 0%, rgba(124, 77, 255, 0.2) 100%);
    border-left-color: var(--accent-secondary);
    color: var(--accent-primary);
}

/* Détails - Cartes d'expériences en grille adaptative :
   - 1 expérience → carte sur toute la largeur
   - 2+ expériences → s'affichent côte à côte (visibles simultanément) */
.details-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    align-items: start;
    /* Fondu lors du changement d'année (couplé à la classe .swapping) */
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.details-list.swapping {
    opacity: 0;
    transform: translateY(6px);
}

/* Un .details-list par année : display:grid l'emporterait sur [hidden] */
.details-list[hidden] {
    display: none;
}

.experience-card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.2rem 1.25rem;
    transition: var(--transition);
    animation: slideIn 0.5s ease-out;
    display: flex;
    flex-direction: column;
    height: 100%;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.experience-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(29, 233, 182, 0.15);
    transform: translateY(-4px);
}

.experience-company {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    line-height: 1.3;
}

.experience-company i {
    font-size: 1rem;
}

.experience-position {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.experience-period {
    font-size: 0.82rem;
    color: var(--accent-secondary);
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.experience-missions {
    list-style: none;
    padding: 0;
    margin: 0;
}

.experience-missions li {
    padding-left: 1.2rem;
    margin-bottom: 0.45rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.45;
    position: relative;
}

.experience-missions li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

.experience-missions li:last-child {
    margin-bottom: 0;
}

/* Responsive - Mobile : années en scroll horizontal au-dessus des détails */
@media (max-width: 768px) {
    .experiences-columns {
        grid-template-columns: 1fr;
        gap: 1rem;
        height: auto;
        max-height: none;
    }

    /* Bande horizontale des années (au-dessus) */
    .experiences-years-column {
        padding: 0.6rem;
        overflow-x: auto;
        overflow-y: hidden;
        max-height: none;
        /* Fondu uniquement sur le bord gauche (le droit est naturellement coupé = peek) */
        mask-image: linear-gradient(90deg, transparent 0, #000 16px, #000 100%);
        -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 16px, #000 100%);
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }

    .years-list {
        flex-direction: row;
        flex-wrap: nowrap;
        gap: 0.6rem;
        padding: 0.2rem 0.4rem;
        /* largeur totale déterminée par les items, pas max-content */
    }

    /* Chaque item = 80% du conteneur → on voit toujours 20% (=1/4 de l'item) du suivant */
    .year-item {
        flex: 0 0 calc(80% - 0.6rem);
        width: calc(80% - 0.6rem);
        scroll-snap-align: start;
        padding: 0.7rem 1rem;
        font-size: 1rem;
        border-left: none;
        border-bottom: 3px solid var(--accent-primary);
        border-radius: 8px;
        white-space: nowrap;
    }

    .year-item:hover {
        transform: translateY(-3px);
        border-bottom-color: var(--accent-secondary);
    }

    .year-item.active {
        border-bottom-color: var(--accent-secondary);
        transform: translateY(-2px);
    }

    /* Scrollbar horizontale plus fine */
    .experiences-years-column::-webkit-scrollbar {
        height: 5px;
        width: 5px;
    }

    .experiences-years-column::-webkit-scrollbar-thumb {
        background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    }

    .experiences-details-column {
        max-height: 400px;
        padding: 1rem;
    }

    /* Mobile : 1 seule colonne (sinon les cartes deviennent illisibles) */
    .details-list {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .experience-company {
        font-size: 1.05rem;
    }

    .experience-position {
        font-size: 0.95rem;
    }
}

/* ============================================================================
   TECHNOLOGIES
   ========================================================================== */

/* Section Technologies : même niveau de contraste que Projects,
   couleurs inversées (violet haut-gauche, vert bas-droite) pour varier */
.technologies-section {
    background:
        radial-gradient(ellipse 60% 40% at 50% -5%, rgba(255, 255, 255, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 0%, rgba(124, 77, 255, 0.11) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 100%, rgba(29, 233, 182, 0.11) 0%, transparent 55%),
        linear-gradient(135deg, rgba(124, 77, 255, 0.05) 0%, rgba(29, 233, 182, 0.05) 100%);
}

.tabs-container {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tabs-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: none;
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Poppins', sans-serif;
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--accent-primary);
    color: var(--primary-dark);
    box-shadow: 0 0 20px rgba(29, 233, 182, 0.4);
    transform: translateY(-2px);
}

.tabs-content {
    position: relative;
    /* Hauteur "peek" : 1 ligne complète + 4/5 de la suivante
       tech-item (~121px) + gap (24px) + 4/5 tech-item (~97px) + padding (16px) */
    max-height: 258px;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 0.5rem;
    /* Fondu en bas pour signaler du contenu scrollable */
    mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
}

.tabs-content::-webkit-scrollbar {
    width: 6px;
}

.tabs-content::-webkit-scrollbar-track {
    background: rgba(29, 233, 182, 0.05);
    border-radius: 10px;
}

.tabs-content::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 10px;
    transition: var(--transition);
}

.tabs-content::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--accent-secondary), var(--accent-primary));
    box-shadow: 0 0 10px rgba(29, 233, 182, 0.4);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.tab-content.active {
    display: block;
}

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

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    padding-bottom: 1rem;
}

.tech-item {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
}

.tech-item i {
    font-size: 2.5rem;
    color: var(--accent-secondary);
}

.tech-item span {
    font-weight: 600;
    font-size: 0.95rem;
}

.tech-item:hover {
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.1) 0%, rgba(124, 77, 255, 0.1) 100%);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(29, 233, 182, 0.15);
    transform: translateY(-8px) scale(1.05);
}

.tech-item:hover i {
    color: var(--accent-primary);
    animation: spin 0.6s ease-out;
}

@keyframes spin {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}

/* ============================================================================
   PROJETS
   ========================================================================== */

/* Section Projets : luminosité renforcée
   - 2 halos coin (vert haut-gauche / violet bas-droit) — intensité augmentée
   - 1 spot blanc-chaud au centre-haut (effet "projecteur" sur le titre)
   - gradient linéaire diagonal légèrement renforcé */
.projects-section {
    background:
        radial-gradient(ellipse 60% 40% at 50% -5%, rgba(255, 255, 255, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 20% 0%, rgba(29, 233, 182, 0.11) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 100%, rgba(124, 77, 255, 0.11) 0%, transparent 55%),
        linear-gradient(135deg, rgba(29, 233, 182, 0.05) 0%, rgba(124, 77, 255, 0.05) 100%);
}

.project-categories {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.project-category-btn {
    background: none;
    border: 2px solid var(--accent-secondary);
    color: var(--accent-secondary);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
}

.project-category-btn:hover,
.project-category-btn.active {
    background: var(--accent-secondary);
    color: var(--primary-dark);
    box-shadow: 0 0 20px rgba(124, 77, 255, 0.4);
    transform: translateY(-2px);
}

.carousel-wrapper {
    position: relative;
    /* Hauteur : 1 ligne complète + petit aperçu de la suivante (effet "peek") */
    max-height: 340px;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 0.5rem;
    border-radius: 15px;
    /* Transition fluide lors du clic sur "Voir plus" */
    transition: max-height 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    /* Indicateur visuel "il y a plus en bas" : fondu en bas du wrapper */
    mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, #000 0, #000 calc(100% - 24px), transparent 100%);
}

/* État étendu : 2 lignes complètes avant que le scroll ne s'active */
.carousel-wrapper.expanded {
    /* 2 cartes (215px) + gap (20px) + padding-bottom container (16px) + buffer (10px) */
    max-height: 500px;
}

/* Bouton "voir plus de projets" */
.carousel-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin: 1.25rem auto 0;
    padding: 0.65rem 1.5rem;
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.1) 0%, rgba(124, 77, 255, 0.1) 100%);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.carousel-toggle:hover {
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.2) 0%, rgba(124, 77, 255, 0.2) 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(29, 233, 182, 0.18);
}

.carousel-toggle:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 3px;
}

.carousel-toggle .toggle-icon {
    transition: transform 0.3s ease;
    font-size: 0.8rem;
    color: var(--accent-primary);
}

/* Rotation de la flèche en mode étendu */
.carousel-toggle[aria-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
}

/* Masquage du bouton sur mobile (≤768px) : seule l'option desktop/tablette */
@media (max-width: 768px) {
    .carousel-toggle {
        display: none;
    }

    /* Sur mobile, le bouton est masqué — on neutralise l'état expanded */
    .carousel-wrapper.expanded {
        max-height: 360px;
    }
}

.carousel-wrapper::-webkit-scrollbar {
    width: 6px;
}

.carousel-wrapper::-webkit-scrollbar-track {
    background: rgba(124, 77, 255, 0.05);
    border-radius: 10px;
}

.carousel-wrapper::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 10px;
    transition: var(--transition);
}

.carousel-wrapper::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--accent-secondary), var(--accent-primary));
    box-shadow: 0 0 10px rgba(124, 77, 255, 0.4);
}

.carousel {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.carousel.active {
    display: block;
}

.carousel-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.25rem;
    padding: 0 0 1rem 0;
}

.project-card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
    max-width: 270px;
    margin: 0 auto;
    /* Reset des styles natifs <a> */
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.project-card:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 3px;
}

.project-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 8px 22px rgba(29, 233, 182, 0.18);
    transform: translateY(-6px);
}

.card-image {
    width: 100%;
    height: 125px;
    overflow: hidden;
    position: relative;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .card-image img {
    transform: scale(1.08);
}

.card-body {
    padding: 0.9rem 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-body h3 {
    font-size: 0.95rem;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
    line-height: 1.3;
    font-weight: 600;
}

.card-body p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 0;
    flex: 1;
    line-height: 1.4;
}

/* Tags des technologies sur les cartes de projet (compactes) */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-top: 0.6rem;
}

.tech-tag {
    font-size: 0.62rem;
    padding: 0.18rem 0.45rem;
    border-radius: 4px;
    background: rgba(29, 233, 182, 0.08);
    color: var(--accent-primary);
    border: 1px solid rgba(29, 233, 182, 0.25);
    font-weight: 600;
    letter-spacing: 0.2px;
    white-space: nowrap;
    line-height: 1.3;
}

.project-card:hover .tech-tag {
    background: rgba(29, 233, 182, 0.15);
    border-color: rgba(29, 233, 182, 0.4);
}

.btn {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
    font-family: 'Poppins', sans-serif;
    font-size: 0.95rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: var(--primary-dark);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(29, 233, 182, 0.4);
    transform: translateY(-2px);
}

/* ============================================================================
   SECTION CONTACT
   ========================================================================== */

.contact-section {
    background:
        radial-gradient(ellipse 60% 40% at 50% -5%, rgba(255, 255, 255, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 0%, rgba(124, 77, 255, 0.11) 0%, transparent 55%),
        radial-gradient(ellipse at 20% 100%, rgba(29, 233, 182, 0.11) 0%, transparent 55%),
        linear-gradient(135deg, rgba(124, 77, 255, 0.05) 0%, rgba(29, 233, 182, 0.05) 100%);
    padding: 3rem 2rem !important;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

/* Cartes d'informations */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-card {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.2rem;
    display: flex;
    gap: 1rem;
    transition: var(--transition);
    animation: slideUp 0.5s ease-out;
}

.info-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 8px 20px rgba(29, 233, 182, 0.15);
    transform: translateY(-3px);
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.08) 0%, rgba(124, 77, 255, 0.08) 100%);
}

.info-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 10px;
    color: var(--primary-dark);
    font-size: 1.2rem;
}

.info-content h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.info-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.info-content a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.info-content a:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

/* Réseaux sociaux */
.contact-social {
    background: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: var(--transition);
}

.contact-social:hover {
    border-color: var(--accent-secondary);
    box-shadow: 0 8px 24px rgba(124, 77, 255, 0.15);
}

.contact-social h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    width: 100%;
}

.social-btn {
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.1) 0%, rgba(124, 77, 255, 0.1) 100%);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    transition: var(--transition);
    color: var(--text-primary);
}

.social-btn i {
    font-size: 1.5rem;
}

.social-btn span {
    font-size: 0.8rem;
    font-weight: 600;
}

.social-btn:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 6px 16px rgba(29, 233, 182, 0.15);
    transform: translateY(-5px) scale(1.03);
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.15) 0%, rgba(124, 77, 255, 0.15) 100%);
}

.social-btn.github:hover i,
.social-btn.linkedin:hover i,
.social-btn.kaggle:hover i,
.social-btn.twitter:hover i {
    color: var(--accent-primary);
    animation: spin 0.6s ease-out;
}

.social-btn.github i {
    color: #e0e0e0;
}

.social-btn.linkedin i {
    color: #0a66c2;
}

.social-btn.kaggle i {
    color: #20beff;
}

.social-btn.twitter i {
    color: #1da1f2;
}

/* Responsive - Contact */
@media (max-width: 1024px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .social-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .contact-section {
        padding: 2.5rem 1rem !important;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .contact-info {
        gap: 1rem;
    }
    
    .info-card {
        padding: 1rem;
        gap: 0.8rem;
    }
    
    .info-icon {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    .info-content h3 {
        font-size: 0.95rem;
    }
    
    .info-content p {
        font-size: 0.85rem;
    }
    
    .contact-social {
        padding: 1.2rem;
    }
    
    .contact-social h3 {
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    /* Tablet : 2 colonnes confortables, boutons plus généreux */
    .social-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.9rem;
    }

    .social-btn {
        padding: 1.1rem 1rem;
        min-height: 72px;
        gap: 0.7rem;
    }

    .social-btn i {
        font-size: 1.8rem;
    }

    .social-btn span {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .contact-section {
        padding: 2rem 0.5rem !important;
    }

    .contact-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .contact-info {
        gap: 0.6rem;
    }

    /* Cartes contact compactes : icône à gauche, texte à droite */
    /* Plus naturel à lire et 3× moins haut que le layout vertical centré */
    .info-card {
        flex-direction: row;
        align-items: center;
        text-align: left;
        padding: 0.7rem 0.9rem;
        gap: 0.7rem;
        min-width: 0;
    }

    .info-icon {
        width: 38px;
        height: 38px;
        font-size: 0.95rem;
        border-radius: 8px;
    }

    .info-content {
        min-width: 0;
        flex: 1;
    }

    .info-content h3 {
        font-size: 0.8rem;
        margin-bottom: 0.15rem;
    }

    .info-content p {
        font-size: 0.82rem;
        /* Évite l'overflow si l'email est long sur écran étroit */
        word-break: break-word;
        overflow-wrap: anywhere;
        line-height: 1.3;
    }

    .info-content a {
        font-size: 0.8rem;
    }

    .contact-social {
        padding: 1.2rem;
    }

    .contact-social h3 {
        font-size: 1rem;
        margin-bottom: 1rem;
        text-align: center;
    }

    /* Smartphone : pills horizontaux pleine largeur (icône à gauche, nom à droite) */
    /* Beaucoup plus tactile, lisible et moderne sur petit écran                  */
    .social-grid {
        grid-template-columns: 1fr;
        gap: 0.7rem;
    }

    .social-btn {
        flex-direction: row;
        justify-content: flex-start;
        align-items: center;
        gap: 1rem;
        padding: 0.95rem 1.25rem;
        min-height: 56px;
        border-radius: 12px;
        width: 100%;
    }

    .social-btn i {
        font-size: 1.6rem;
        width: 32px;
        text-align: center;
        flex-shrink: 0;
    }

    .social-btn span {
        font-size: 1rem;
        font-weight: 600;
        text-align: left;
    }

    /* Touche colorée à gauche (accent visuel par réseau) */
    .social-btn.github {
        border-left: 3px solid #e0e0e0;
    }

    .social-btn.linkedin {
        border-left: 3px solid #0a66c2;
    }

    .social-btn.kaggle {
        border-left: 3px solid #20beff;
    }

    .social-btn.twitter {
        border-left: 3px solid #1da1f2;
    }
}

/* ============================================================================
   FOOTER
   ========================================================================== */

.footer {
    background: linear-gradient(180deg, #000000 0%, #0a0e14 50%, #050709 100%);
    border-top: 1px solid rgba(29, 233, 182, 0.15);
    padding: 4rem 2rem 3rem;
    margin-top: 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(29, 233, 182, 0.08), inset 0 -1px 0 rgba(124, 77, 255, 0.06);
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 500px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(29, 233, 182, 0.3), transparent);
    transform: translateX(-50%);
    pointer-events: none;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.footer-divider {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    margin: 0 auto 2rem;
    border-radius: 1px;
    opacity: 0.6;
}

/* ============================================================================
   FOOTER — GRILLE 3 COLONNES
   ========================================================================== */

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr;
    gap: 3rem;
    margin: 1rem 0 2.5rem;
    text-align: left;
}

.footer-col {
    min-width: 0;
}

/* Colonne 1 — identité de marque */
.footer-brand-name {
    font-size: 1.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 0.4rem;
    letter-spacing: 0.5px;
}

.footer-brand-role {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 0.6rem;
}

.footer-brand-tagline {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
    line-height: 1.5;
    margin: 0;
    opacity: 0.85;
}

/* Titres des colonnes Nav/Contact */
.footer-col-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin: 0 0 1rem;
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

/* Listes Navigation & Contact */
.footer-nav-list,
.footer-contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.footer-nav-list a,
.footer-contact-list a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-nav-list a:hover,
.footer-contact-list a:hover {
    color: var(--accent-primary);
    transform: translateX(3px);
}

.footer-contact-list a i {
    color: var(--accent-primary);
    width: 16px;
    text-align: center;
    flex-shrink: 0;
}

.footer-contact-list a span {
    word-break: break-word;
}

/* Mini-row réseaux sociaux dans le footer */
.footer-socials {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.2rem;
}

.footer-social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(29, 233, 182, 0.06);
    border: 1px solid rgba(29, 233, 182, 0.2);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-social-icon:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, rgba(29, 233, 182, 0.18), rgba(124, 77, 255, 0.18));
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 4px 12px rgba(29, 233, 182, 0.25);
}

.footer-social-icon:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 3px;
}

/* Bandeau bas : copyright + crédit stack */
.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0 0 0.3rem;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.footer-credit {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin: 0;
    opacity: 0.7;
    letter-spacing: 0.2px;
}

.footer-credit i {
    color: #e63946;
    margin: 0 0.15rem;
}

/* ============================================================================
   BOUTON FLOTTANT "RETOUR EN HAUT"
   ========================================================================== */

.back-to-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: 0;
    color: var(--primary-dark);
    cursor: pointer;
    font-size: 1.05rem;
    box-shadow: 0 6px 20px rgba(29, 233, 182, 0.35);
    z-index: 90;
    /* Caché par défaut, devient visible au scroll via JS */
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: opacity 0.3s ease, visibility 0.3s, transform 0.3s ease,
                box-shadow 0.3s ease;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 28px rgba(29, 233, 182, 0.5);
}

.back-to-top:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 3px;
}

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

@media (max-width: 768px) {
    .footer {
        padding: 3rem 1.5rem 2rem;
        margin-top: 3rem;
    }

    .footer-text {
        font-size: 0.85rem;
    }

    /* Footer en 1 colonne empilée + tout centré */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
        margin-bottom: 1.5rem;
    }

    .footer-nav-list,
    .footer-contact-list {
        align-items: center;
    }

    .footer-nav-list a,
    .footer-contact-list a {
        justify-content: center;
    }

    .footer-socials {
        justify-content: center;
    }

    /* Back-to-top : un peu plus petit / plus proche du bord */
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 42px;
        height: 42px;
        font-size: 0.95rem;
    }
}

@media (max-width: 1024px) {
    .tabs-content {
        /* Tablette : 1 ligne + 4/5 de la suivante */
        max-height: 258px;
    }

    .carousel-wrapper {
        max-height: 330px;
    }
}

@media (max-width: 768px) {
    .header-title {
        font-size: 1.3rem;
    }

    .section {
        padding: 2.5rem 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .presentation-container {
        gap: 1.5rem;
    }

    .profile-frame {
        width: 150px;
        height: 150px;
    }

    .presentation-text h2 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .about-card {
        padding: 1.5rem;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .tabs-buttons {
        gap: 1rem;
    }

    .tab-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }

    .tabs-content {
        /* Tablette intermédiaire : 1 ligne + 4/5 de la suivante */
        max-height: 258px;
    }

    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 1rem;
    }

    .tech-item {
        padding: 1rem;
    }

    .tech-item i {
        font-size: 2rem;
    }

    .project-categories {
        gap: 0.8rem;
    }

    .carousel-wrapper {
        /* Tablette : 1 ligne complète + petit aperçu de la suivante */
        max-height: 345px;
    }

    .carousel-container {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }

    .project-card {
        max-width: 100%;
    }

    .card-image {
        height: 110px;
    }

    .social-icon {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .header-title {
        font-size: 1rem;
    }

    .section {
        padding: 1.5rem 0.5rem;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .presentation-text h2 {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .description {
        font-size: 0.95rem;
    }

    .about-card {
        padding: 1rem;
    }

    .card-icon {
        font-size: 2.5rem;
    }

    .tabs-buttons {
        flex-direction: column;
        gap: 0.8rem;
    }

    .tab-btn {
        width: 100%;
        padding: 0.7rem 1rem;
        font-size: 0.85rem;
    }

    .tabs-content {
        /* Smartphone : tech-item ~95px + gap 16px + 4/5 de 95px (~76px) + padding 16px */
        max-height: 203px;
    }

    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .project-categories {
        gap: 0.5rem;
    }

    .project-category-btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }

    .carousel-wrapper {
        /* Smartphone : 1 ligne complète + petit aperçu de la suivante */
        max-height: 360px;
    }

    .carousel-container {
        gap: 0.8rem;
        grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
    }

    .project-card {
        max-width: 100%;
    }

    .card-image {
        height: 95px;
    }

    .card-body {
        padding: 0.7rem 0.85rem;
    }

    .card-body h3 {
        font-size: 0.85rem;
        margin-bottom: 0.3rem;
    }

    .card-body p {
        font-size: 0.72rem;
    }

    .social-links {
        gap: 1rem;
    }

    .social-icon {
        font-size: 1.5rem;
    }

    .footer-text {
        font-size: 0.85rem;
    }
}