/* =====================================================
   APP.CSS - GLOBAL PLAM-X
   Base, header, menu mobile, boutons, footer.
   Structure reprise du design LBAM, palette bleue.
   ===================================================== */

:root {
    --blue: #2f6fd0;
    --blue-dark: #1d4f91;
    --blue-light: #8fc2f5;
    --black: #101720;
    --dark: #1a2432;
    --cream: #f2f6fc;
    --white: #ffffff;
    --text: #55606f;
    --muted: #838f9e;
    --border: rgba(16,23,32,.08);
    --shadow: 0 24px 70px rgba(16,23,32,.14);
    --radius: 28px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Inter", sans-serif;
    color: var(--text);
    background: var(--cream);
}

body.menu-open {
    overflow: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

p {
    margin: 0 0 18px;
}

.container {
    width: min(1180px, calc(100% - 40px));
    margin: auto;
}

/* HEADER */

.site-header {
    position: sticky;
    top: 0;
    z-index: 80;
    background: rgba(242,246,252,.86);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}

.site-header .container {
    width: min(1320px, calc(100% - 32px));
}

.header-inner {
    height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-logo-link {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
}

.site-logo {
    height: 46px;
    width: auto;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 22px;
    font-weight: 600;
    font-size: 15px;
}

.main-nav a {
    color: var(--text);
    transition: .25s ease;
}

.main-nav a:hover {
    color: var(--blue-dark);
}

.header-btn {
    background: var(--black);
    color: var(--white);
    padding: 13px 22px;
    border-radius: 999px;
    font-weight: 700;
    transition: .25s ease;
    flex-shrink: 0;
}

.header-btn:hover {
    background: var(--blue);
    color: var(--white);
    transform: translateY(-2px);
}

/* SÉLECTEUR DE LANGUE */

.lang-dd {
    position: relative;
    flex-shrink: 0;
}

.lang-dd summary {
    list-style: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    padding: 9px 13px;
    border: 1px solid var(--border);
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    user-select: none;
    transition: .2s ease;
}

.lang-dd summary::-webkit-details-marker {
    display: none;
}

.lang-dd summary::after {
    content: "\25BE";
    font-size: .7em;
    color: var(--muted);
}

.lang-dd summary:hover,
.lang-dd[open] summary {
    background: var(--white);
    border-color: rgba(47,111,208,.35);
    color: var(--blue-dark);
}

.lang-dd-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 18px 45px rgba(16,23,32,.16);
    min-width: 170px;
    padding: 6px;
    z-index: 90;
}

.lang-dd-menu a {
    display: block;
    padding: 10px 14px;
    border-radius: 9px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.lang-dd-menu a:hover {
    background: var(--cream);
}

.lang-dd-menu a.is-active {
    color: var(--blue-dark);
    font-weight: 800;
}

.mobile-lang-switch {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

.mobile-lang-switch a {
    font-weight: 700;
    font-size: 14px;
    color: var(--text);
    background: var(--white);
    padding: 9px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.mobile-lang-switch a.is-active {
    background: var(--blue);
    border-color: var(--blue);
    color: var(--white);
}

/* MENU MOBILE */

.menu-toggle {
    display: none;
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 50%;
    background: var(--black);
    cursor: pointer;
    position: relative;
    z-index: 120;
    flex-shrink: 0;
}

.menu-toggle span {
    position: absolute;
    left: 13px;
    width: 22px;
    height: 2px;
    background: var(--white);
    border-radius: 10px;
    transition: .25s ease;
}

.menu-toggle span:first-child {
    top: 18px;
}

.menu-toggle span:last-child {
    top: 28px;
}

.menu-toggle.is-active span:first-child {
    top: 23px;
    transform: rotate(45deg);
}

.menu-toggle.is-active span:last-child {
    top: 23px;
    transform: rotate(-45deg);
}

.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(16,23,32,.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    transition: .3s ease;
    z-index: 90;
}

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

.mobile-menu {
    position: fixed;
    top: 16px;
    right: 16px;
    bottom: 16px;
    width: min(420px, calc(100% - 32px));
    background: var(--cream);
    border-radius: 32px;
    box-shadow: 0 30px 90px rgba(16,23,32,.35);
    z-index: 100;
    padding: 24px;
    transform: translateX(calc(100% + 40px)) scale(.96);
    opacity: 0;
    transition: .35s cubic-bezier(.2,.9,.2,1);
    display: flex;
    flex-direction: column;
}

.mobile-menu.is-open {
    transform: translateX(0) scale(1);
    opacity: 1;
}

.mobile-menu-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 30px;
}

.mobile-menu-head img {
    height: 42px;
    width: auto;
}

.mobile-close {
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 50%;
    background: var(--white);
    color: var(--black);
    font-size: 32px;
    line-height: 1;
    cursor: pointer;
}

.mobile-menu-links {
    display: grid;
    gap: 10px;
}

.mobile-menu-links a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    background: var(--white);
    border-radius: 18px;
    font-size: 19px;
    font-weight: 800;
    color: var(--black);
    box-shadow: 0 10px 30px rgba(16,23,32,.05);
    transition: .25s ease;
}

.mobile-menu-links a:hover {
    transform: translateX(4px);
    background: #eaf2fd;
}

.mobile-menu-links a::after {
    content: "\2192";
    color: var(--blue-dark);
}

.mobile-menu-cta {
    margin-top: auto;
    padding-top: 24px;
}

.mobile-menu-cta .btn {
    width: 100%;
}

/* TYPOGRAPHIE / BOUTONS */

.eyebrow {
    display: inline-flex;
    align-items: center;
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(47,111,208,.14);
    color: var(--blue-dark);
    font-weight: 800;
    font-size: 14px;
    margin-bottom: 24px;
}

.eyebrow.dark {
    background: rgba(16,23,32,.08);
    color: var(--black);
}

h1, h2, h3 {
    font-family: "Poppins", sans-serif;
    color: var(--black);
    margin: 0;
    line-height: 1.08;
}

h1 {
    font-size: clamp(42px, 5.6vw, 76px);
    max-width: 850px;
    letter-spacing: -0.05em;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    padding: 0 26px;
    border-radius: 999px;
    font-weight: 800;
    transition: .25s ease;
}

.btn-primary {
    background: var(--blue);
    color: var(--white);
    box-shadow: 0 14px 35px rgba(47,111,208,.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    background: var(--blue-dark);
    color: var(--white);
}

.btn-secondary {
    background: var(--white);
    color: var(--black);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    transform: translateY(-3px);
}

.btn-light {
    background: var(--white);
    color: var(--black);
}

/* SECTIONS */

.section {
    padding: 110px 0;
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 56px;
    text-align: center;
}

.section-heading span {
    color: var(--blue-dark);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .1em;
    font-size: 13px;
}

.section-heading h2,
.why-section h2,
.cta-box h2 {
    font-size: clamp(32px, 3.8vw, 54px);
    margin-top: 14px;
}

.section-heading p,
.why-section p,
.cta-box p {
    font-size: 18px;
    line-height: 1.8;
}

/* LISTES CHECK */

.check-list {
    list-style: none;
    padding: 0;
    margin: 30px 0;
    display: grid;
    gap: 14px;
}

.check-list li {
    background: var(--cream);
    border-radius: 16px;
    padding: 15px 18px;
    font-weight: 700;
}

.check-list li::before {
    content: "\2713";
    color: var(--blue-dark);
    font-weight: 900;
    margin-right: 10px;
}

.image-stack {
    border-radius: 38px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

/* FOOTER */

.site-footer {
    background: var(--black);
    color: rgba(255,255,255,.7);
    padding-top: 70px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr .7fr .7fr;
    gap: 50px;
}

.site-footer h3,
.site-footer h4 {
    color: var(--white);
    margin-bottom: 16px;
}

.site-footer p {
    line-height: 1.7;
}

.site-footer a {
    display: block;
    margin-bottom: 10px;
    color: rgba(255,255,255,.7);
}

.site-footer a:hover {
    color: var(--blue-light);
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-bottom: 18px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    text-align: center;
    padding: 24px;
    margin-top: 50px;
    font-size: 14px;
}

.footer-social-section {
    padding: 50px 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,.08);
    margin-top: 50px;
}

.footer-social-section h2 {
    color: #fff;
    margin: 15px 0;
    font-size: clamp(26px, 3.4vw, 38px);
}

.footer-social-section p {
    max-width: 700px;
    margin: 0 auto 30px;
    color: rgba(255,255,255,.75);
    line-height: 1.7;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 18px;
}

.footer-social a {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    transition: .25s ease;
}

.footer-social a i {
    font-size: 24px;
    color: #fff;
}

.footer-social a:hover {
    background: var(--blue);
    border-color: var(--blue);
    transform: translateY(-3px);
}

/* RESPONSIVE GLOBAL */

@media (max-width: 1080px) {
    .main-nav {
        gap: 16px;
        font-size: 14px;
    }
}

@media (max-width: 980px) {
    .desktop-nav,
    .header-btn,
    .lang-dd {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

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

@media (max-width: 640px) {
    .container {
        width: min(100% - 26px, 1180px);
    }

    .header-inner {
        height: 72px;
        gap: 16px;
    }

    .site-logo {
        height: 38px;
    }

    .mobile-menu {
        top: 10px;
        right: 10px;
        bottom: 10px;
        width: calc(100% - 20px);
        border-radius: 26px;
        padding: 20px;
    }

    .mobile-menu-links a {
        padding: 16px 18px;
        font-size: 18px;
    }

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

    .hero-actions .btn {
        width: 100%;
    }

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