:root {
    --background: #09090d;
    --background-secondary: #101017;

    --surface: rgba(255, 255, 255, 0.055);
    --surface-hover: rgba(255, 255, 255, 0.095);

    --border: rgba(255, 255, 255, 0.11);

    --text: #f5f5f7;
    --text-secondary: #a4a4af;

    --accent: #d7b56d;
    --accent-light: #f0d69b;

    --danger: #ff7a7a;

    --radius-small: 14px;
    --radius-medium: 20px;
    --radius-large: 28px;

    --max-width: 1120px;

    --shadow-soft:
        0 18px 50px rgba(0, 0, 0, 0.24);

    --transition:
        180ms ease;
}


* {
    box-sizing: border-box;
}


html {
    scroll-behavior: smooth;
}


body {
    margin: 0;

    min-height: 100vh;

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background:
        radial-gradient(
            circle at top,
            #18151e 0%,
            var(--background) 42%
        );

    color: var(--text);
}


img {
    max-width: 100%;
}


a {
    color: inherit;
}


button,
input,
textarea,
select {
    font: inherit;
}


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

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;

    border-bottom:
        1px solid rgba(255, 255, 255, 0.06);

    background:
        rgba(9, 9, 13, 0.86);

    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}


.main-navigation {
    width:
        min(
            calc(100% - 36px),
            var(--max-width)
        );

    min-height: 70px;

    margin: 0 auto;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 24px;
}


.nav-brand {
    flex-shrink: 0;

    color: var(--accent-light);

    font-size: 1rem;
    font-weight: 800;

    letter-spacing: 0.1em;

    text-decoration: none;
    text-transform: uppercase;
}


.nav-links {
    display: flex;
    align-items: center;

    gap: 20px;
}


.nav-links a {
    position: relative;

    padding: 8px 0;

    color: var(--text-secondary);

    font-size: 0.87rem;
    font-weight: 600;

    text-decoration: none;

    transition:
        color var(--transition);
}


.nav-links a::after {
    content: "";

    position: absolute;

    left: 0;
    bottom: 2px;

    width: 100%;
    height: 1px;

    background: var(--accent);

    transform: scaleX(0);
    transform-origin: center;

    transition:
        transform var(--transition);
}


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


.nav-links a:hover::after {
    transform: scaleX(1);
}


/* ==================================================
   STRUCTURE GÉNÉRALE
   ================================================== */

.container {
    width:
        min(
            calc(100% - 36px),
            var(--max-width)
        );

    margin: 0 auto;
}


.page-main {
    padding-top: 70px;
    padding-bottom: 40px;
}


.section {
    margin-bottom: 100px;
}


.section-label {
    margin: 0 0 10px;

    color: var(--accent);

    font-size: 0.77rem;
    font-weight: 800;

    letter-spacing: 0.17em;

    text-transform: uppercase;
}


.section-intro {
    max-width: 720px;

    margin: -18px 0 34px;

    color: var(--text-secondary);

    font-size: 1rem;

    line-height: 1.75;
}


/* ==================================================
   TYPOGRAPHIE
   ================================================== */

h1,
h2,
h3 {
    color: var(--text);
}


h1 {
    margin: 0;

    font-size:
        clamp(
            3.3rem,
            10vw,
            7rem
        );

    line-height: 0.96;

    letter-spacing: -0.06em;
}


h2 {
    margin: 0 0 32px;

    font-size:
        clamp(
            2rem,
            5vw,
            3.2rem
        );

    letter-spacing: -0.045em;
}


h3 {
    margin: 0 0 12px;

    font-size: 1.35rem;
}


/* ==================================================
   HERO ACCUEIL
   ================================================== */

.hero {
    min-height: 76vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 70px 24px 90px;

    text-align: center;
}


.hero-content {
    width: 100%;
    max-width: 820px;
}


.hero-logo {
    width: 92px;
    height: 92px;

    margin-bottom: 20px;

    border-radius: 24px;

    box-shadow: var(--shadow-soft);
}


.brand-badge {
    display: inline-block;

    margin-bottom: 24px;

    padding: 8px 15px;

    border:
        1px solid rgba(215, 181, 109, 0.35);

    border-radius: 999px;

    color: var(--accent-light);

    background:
        rgba(215, 181, 109, 0.08);

    font-size: 0.78rem;
    font-weight: 700;

    letter-spacing: 0.18em;

    text-transform: uppercase;
}


.subtitle {
    margin: 24px 0 0;

    color: var(--accent-light);

    font-size:
        clamp(
            1.15rem,
            3vw,
            1.5rem
        );

    font-weight: 600;
}


.description {
    max-width: 690px;

    margin: 20px auto 0;

    color: var(--text-secondary);

    font-size: 1.05rem;

    line-height: 1.8;
}


.hero-actions {
    margin-top: 34px;

    display: flex;
    justify-content: center;
    align-items: center;

    flex-wrap: wrap;

    gap: 12px;
}


/* ==================================================
   BOUTONS
   ================================================== */

.primary-cta,
.secondary-cta,
.product-button,
.project-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    min-height: 46px;

    padding: 12px 20px;

    border-radius: 999px;

    font-size: 0.88rem;
    font-weight: 800;

    text-decoration: none;

    transition:
        transform var(--transition),
        background var(--transition),
        border-color var(--transition);
}


.primary-cta,
.product-button {
    background: var(--accent);

    color: #09090d;
}


.primary-cta:hover,
.product-button:hover {
    transform: translateY(-2px);

    background: var(--accent-light);
}


.secondary-cta,
.project-link {
    border:
        1px solid rgba(215, 181, 109, 0.38);

    background:
        rgba(215, 181, 109, 0.08);

    color: var(--accent-light);
}


.secondary-cta:hover,
.project-link:hover {
    transform: translateY(-2px);

    background:
        rgba(215, 181, 109, 0.15);
}


/* ==================================================
   CARTES ACCUEIL
   ================================================== */

.link-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 16px;
}


.hub-card {
    min-height: 124px;

    display: flex;
    align-items: center;

    gap: 20px;

    padding: 25px;

    border:
        1px solid var(--border);

    border-radius: var(--radius-medium);

    background: var(--surface);

    text-decoration: none;

    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);

    transition:
        transform var(--transition),
        border-color var(--transition),
        background var(--transition);
}


.hub-card:hover {
    transform: translateY(-3px);

    border-color:
        rgba(215, 181, 109, 0.38);

    background: var(--surface-hover);
}


.card-icon {
    flex-shrink: 0;

    width: 52px;
    height: 52px;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 16px;

    background:
        rgba(255, 255, 255, 0.065);

    font-size: 1.5rem;
}


.card-content {
    display: flex;
    flex-direction: column;

    gap: 7px;
}


.card-content strong {
    font-size: 1.08rem;
}


.card-content small {
    color: var(--text-secondary);

    font-size: 0.9rem;

    line-height: 1.45;
}


/* ==================================================
   RÉSEAUX SOCIAUX
   ================================================== */

.social-grid {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 16px;
}


.social-card {
    min-height: 120px;

    display: flex;
    flex-direction: column;
    justify-content: center;

    gap: 6px;

    padding: 22px;

    border:
        1px solid var(--border);

    border-radius: var(--radius-medium);

    background: var(--surface);

    text-decoration: none;

    transition:
        transform var(--transition),
        border-color var(--transition),
        background var(--transition);
}


.social-card:hover {
    transform: translateY(-3px);

    border-color:
        rgba(215, 181, 109, 0.38);

    background:
        var(--surface-hover);
}


.social-card strong {
    color: var(--text);

    font-size: 1rem;
}


.social-card span {
    color: var(--accent-light);

    font-size: 0.88rem;

    overflow-wrap: anywhere;
}


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

.projects {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 16px;
}


.project-card {
    min-height: 220px;

    padding: 28px;

    border:
        1px solid var(--border);

    border-radius: var(--radius-large);

    background:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.065),
            rgba(255, 255, 255, 0.025)
        );

    box-shadow:
        0 12px 30px rgba(0, 0, 0, 0.1);
}


.project-status {
    display: inline-block;

    margin-bottom: 28px;

    padding: 6px 10px;

    border-radius: 999px;

    background:
        rgba(215, 181, 109, 0.1);

    color: var(--accent-light);

    font-size: 0.7rem;
    font-weight: 700;

    letter-spacing: 0.08em;

    text-transform: uppercase;
}


.project-card p {
    margin: 0;

    color: var(--text-secondary);

    line-height: 1.65;
}


/* ==================================================
   PRODUITS
   ================================================== */

.products-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 16px;
}


.product-card {
    padding: 30px;

    border:
        1px solid var(--border);

    border-radius: var(--radius-large);

    background:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.07),
            rgba(255, 255, 255, 0.025)
        );
}


/* PRODUCT_IMAGE_PUBLIC_STYLES_V110 */

.product-card.has-image {
    display: grid;

    grid-template-columns:
        180px minmax(0, 1fr);

    gap: 24px;

    align-items: center;
}


.product-image {
    display: block;

    width: 100%;

    max-width: 180px;

    height: auto;

    max-height: 240px;

    object-fit: contain;

    border-radius:
        var(--radius-medium);

    box-shadow:
        0 16px 35px rgba(0, 0, 0, 0.24);
}


.product-content {
    min-width: 0;
}


.product-platform {
    display: inline-block;

    margin-bottom: 26px;

    padding: 6px 10px;

    border-radius: 999px;

    background:
        rgba(215, 181, 109, 0.1);

    color: var(--accent-light);

    font-size: 0.72rem;
    font-weight: 700;

    letter-spacing: 0.08em;

    text-transform: uppercase;
}


.product-card p {
    margin: 0 0 26px;

    color: var(--text-secondary);

    line-height: 1.65;
}


/* ==================================================
   PAGES SECONDAIRES
   ================================================== */

.page-hero {
    padding: 90px 0 70px;
}


.page-hero h1 {
    max-width: 900px;

    font-size:
        clamp(
            3rem,
            8vw,
            5.8rem
        );
}


.page-intro {
    max-width: 760px;

    margin: 26px 0 0;

    color: var(--text-secondary);

    font-size: 1.1rem;

    line-height: 1.8;
}


.page-hero .primary-cta {
    margin-top: 30px;
}


.empty-state {
    padding: 38px;

    border:
        1px dashed rgba(215, 181, 109, 0.32);

    border-radius: var(--radius-large);

    background:
        rgba(215, 181, 109, 0.04);
}


.empty-state strong {
    display: block;

    margin-bottom: 10px;

    color: var(--accent-light);

    font-size: 1.1rem;
}


.empty-state p {
    margin: 0;

    color: var(--text-secondary);

    line-height: 1.7;
}


.about-section {
    padding: 44px;

    border:
        1px solid var(--border);

    border-radius: var(--radius-large);

    background:
        rgba(255, 255, 255, 0.035);
}


.about-text {
    max-width: 760px;

    margin:
        0 0 18px;

    color: var(--text-secondary);

    font-size: 1.05rem;

    line-height: 1.8;
}


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

footer {
    margin-top: 20px;

    padding: 42px 20px 55px;

    border-top:
        1px solid var(--border);

    color: var(--text-secondary);

    text-align: center;

    font-size: 0.84rem;
}


.footer-content {
    width:
        min(
            calc(100% - 36px),
            var(--max-width)
        );

    margin: 0 auto;
}


.footer-content strong {
    color: var(--accent-light);

    letter-spacing: 0.08em;

    text-transform: uppercase;
}


.footer-content p {
    margin: 8px 0;
}


.footer-content a {
    color: var(--accent-light);

    text-decoration: none;
}


/* ==================================================
   ACCESSIBILITÉ
   ================================================== */

a:focus-visible,
button:focus-visible {
    outline:
        2px solid var(--accent-light);

    outline-offset: 4px;
}


/* ==================================================
   RESPONSIVE — TABLETTE
   ================================================== */

@media (max-width: 900px) {

    .main-navigation {
        flex-direction: column;
        justify-content: center;

        padding: 16px 0;
    }


    .nav-links {
        justify-content: center;

        flex-wrap: wrap;

        gap: 8px 18px;
    }


    .social-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }


    .hero {
        min-height: 68vh;
    }

}


/* ==================================================
   RESPONSIVE — MOBILE
   ================================================== */

@media (max-width: 700px) {

    .container {
        width:
            min(
                calc(100% - 24px),
                var(--max-width)
            );
    }


    .site-header {
        position: relative;
    }


    .main-navigation {
        width:
            min(
                calc(100% - 24px),
                var(--max-width)
            );

        align-items: flex-start;
    }


    .nav-links {
        width: 100%;

        justify-content: flex-start;

        overflow-x: auto;

        flex-wrap: nowrap;

        padding-bottom: 5px;

        scrollbar-width: thin;
    }


    .nav-links a {
        flex-shrink: 0;
    }


    .hero {
        min-height: auto;

        padding:
            72px 18px 80px;
    }


    .hero-logo {
        width: 78px;
        height: 78px;
    }


    .description {
        font-size: 0.98rem;
    }


    .section {
        margin-bottom: 72px;
    }


    .link-grid,
    .social-grid,
    .projects,
    .products-grid {
        grid-template-columns: 1fr;
    }


    .hub-card {
        min-height: 108px;

        padding: 20px;
    }


    .page-main {
        padding-top: 20px;
    }


    .page-hero {
        padding: 58px 0 55px;
    }


    .page-intro {
        font-size: 1rem;
    }


    .about-section,
    .empty-state {
        padding: 26px;
    }

}


/* ==================================================
   RESPONSIVE — PETITS MOBILES
   ================================================== */

@media (max-width: 420px) {

    h1 {
        font-size:
            clamp(
                2.8rem,
                17vw,
                4.4rem
            );
    }


    .nav-links {
        gap: 12px;
    }


    .hero-actions {
        flex-direction: column;
    }


    .primary-cta,
    .secondary-cta {
        width: 100%;
    }

}

/* ==================================================
   SPRINT 3 — MENU MOBILE
   ================================================== */

.mobile-menu-button,
.mobile-menu-close {
    border: 0;
    background: transparent;
    color: var(--text);
    cursor: pointer;
}

.mobile-menu-button {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
}

.mobile-menu-button img,
.mobile-menu-close img {
    width: 24px;
    height: 24px;
}

.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    z-index: 190;
    background: rgba(0, 0, 0, 0.58);
    opacity: 0;
    visibility: hidden;
    transition:
        opacity 220ms ease,
        visibility 220ms ease;
}

.mobile-menu-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
    width: min(86vw, 360px);
    padding: 24px;
    background: #101017;
    border-left: 1px solid var(--border);
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.35);
    transform: translateX(105%);
    transition: transform 240ms ease;
}

.mobile-menu.is-open {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 36px;
}

.mobile-menu-header strong {
    color: var(--accent-light);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.mobile-menu-close {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
}

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-menu-links a {
    display: block;
    padding: 15px 14px;
    border-radius: 14px;
    color: var(--text);
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    transition:
        background 180ms ease,
        color 180ms ease;
}

.mobile-menu-links a:hover {
    background: rgba(215, 181, 109, 0.1);
    color: var(--accent-light);
}

body.menu-open {
    overflow: hidden;
}

/* ==================================================
   SPRINT 3 — ANIMATIONS
   ================================================== */

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition:
        opacity 500ms ease,
        transform 500ms ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ==================================================
   SPRINT 3 — PETITES AMÉLIORATIONS
   ================================================== */

.hero-logo {
    transition:
        transform 220ms ease,
        box-shadow 220ms ease;
}

.hero-logo:hover {
    transform:
        translateY(-3px)
        scale(1.02);

    box-shadow:
        0 20px 55px rgba(0, 0, 0, 0.34);
}

.hub-card,
.social-card,
.project-card,
.product-card {
    will-change: transform;
}

/* ==================================================
   SPRINT 3 — MOBILE
   ================================================== */

@media (max-width: 700px) {

    .desktop-navigation {
        display: none;
    }

    .mobile-menu-button {
        display: flex;
    }

    .main-navigation {
        min-height: 68px;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 0;
    }

    .nav-brand {
        font-size: 0.95rem;
    }
}

/* ==================================================
   SPRINT 3 — ICÔNES SVG
   ================================================== */

.card-icon img {
    width: 27px;
    height: 27px;

    display: block;
}


.social-platform-icon {
    width: 30px;
    height: 30px;

    margin-bottom: 9px;

    display: block;

    opacity: 0.96;
}


.social-card:hover .social-platform-icon {
    transform: scale(1.06);
}


.social-platform-icon {
    transition:
        transform 180ms ease,
        opacity 180ms ease;
}

/* ==================================================
   SPRINT 4 — LIVRES DYNAMIQUES
   ================================================== */

.books-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 20px;
}


.book-card {
    display: grid;

    grid-template-columns:
        1fr;

    gap: 24px;

    padding: 24px;

    border:
        1px solid var(--border);

    border-radius:
        var(--radius-large);

    background:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.065),
            rgba(255, 255, 255, 0.025)
        );
}


/* BOOK_CARD_ADAPTIVE_STYLES_V110 */

.book-card.has-cover {
    grid-template-columns:
        150px minmax(0, 1fr);
}


.book-cover {
    width: 100%;

    aspect-ratio: 2 / 3;

    object-fit: cover;

    border-radius:
        var(--radius-medium);

    box-shadow:
        0 16px 35px rgba(0, 0, 0, 0.24);
}


.book-content {
    display: flex;

    flex-direction: column;

    align-items: flex-start;

    justify-content: center;
}


.book-content h2 {
    margin:
        0 0 14px;

    font-size: 1.45rem;
}


.book-content p {
    margin:
        0 0 24px;

    color:
        var(--text-secondary);

    line-height: 1.65;
}


@media (max-width: 800px) {

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

}


@media (max-width: 520px) {

    .book-card,
    .book-card.has-cover {
        grid-template-columns: 1fr;
    }


    .book-cover {
        max-width: 180px;

        margin:
            0 auto;
    }

}

/* CHEST0 HUB V1 — ARTICLES DU BLOG */

.blog-articles-grid {
    display: grid;
    grid-template-columns:
        repeat(2, minmax(0, 1fr));
    gap: 20px;
    width: 100%;
}

.blog-article-card {
    padding: 24px;
    border:
        1px solid var(--border);
    border-radius:
        var(--radius-large);
    background:
        linear-gradient(
            145deg,
            rgba(255, 255, 255, 0.065),
            rgba(255, 255, 255, 0.025)
        );
}

.blog-article-card h2 {
    margin:
        0 0 14px;
    font-size: 1.4rem;
}

.blog-article-card p {
    margin:
        0 0 22px;
    color:
        var(--text-secondary);
    line-height: 1.65;
}

@media (max-width: 760px) {

    .blog-articles-grid {
        grid-template-columns: 1fr;
    }

}



@media (max-width: 900px) {

    .product-card.has-image {
        grid-template-columns: 1fr;
    }


    .product-card.has-image .product-image {
        max-width: 220px;

        margin:
            0 auto;
    }

}