/* Cadre partagé : en-tête, pied de page et héros intérieur. */

.site-header {
    position: sticky;
    z-index: 100;
    top: 0px;
    background: rgba(255, 253, 249, 0.92);
    border-bottom: 1px solid rgba(219, 229, 238, 0.75);
    backdrop-filter: blur(16px);
}

.header-inner {
    display: grid;
    min-height: 78px;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 34px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--ink);
    font-size: 1.28rem;
    font-weight: 800;
    letter-spacing: -0.035em;
}

.brand img {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(18px, 2.6vw, 38px);
}

.main-nav a, .login-link {
    color: rgb(37, 59, 86);
    font-size: 0.82rem;
    font-weight: 650;
}

.main-nav a:hover, .main-nav a[aria-current="page"], .login-link:hover {
    color: var(--blue);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 18px;
}

.nav-toggle {
    display: none;
    padding: 8px;
    color: var(--ink);
    background: transparent;
    border: 0px;
}

.site-footer {
    padding: 30px 0px 40px;
    background: rgb(255, 255, 255);
    border-top: 1px solid var(--line-soft);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.35fr repeat(5, 1fr);
    gap: 35px;
}

.footer-grid h2 {
    margin-bottom: 13px;
    font-size: 0.68rem;
    letter-spacing: 0px;
}

.footer-grid > div:not(.footer-brand) a, .footer-brand > a:last-child {
    display: block;
    margin: 7px 0px;
    color: var(--ink-soft);
    font-size: 0.61rem;
}

.footer-brand p {
    margin: 12px 0px 30px;
    color: var(--ink-soft);
    font-size: 0.67rem;
}

.copyright {
    margin-top: 30px;
    color: var(--ink-soft);
    font-size: 0.6rem;
}

.inner-hero {
    padding: 110px 0px 100px;
    text-align: center;
    background: radial-gradient(circle at 50% 10%, rgb(238, 249, 255), transparent 55%);
}

.inner-hero h1 {
    margin-bottom: 22px;
    font-size: clamp(2.7rem, 5vw, 5.2rem);
}

.inner-hero .button-row, .inner-hero > .container > .button {
    margin-top: 30px;
}

@media (max-width: 1120px) {
    .header-inner {
        gap: 20px;
    }

    .main-nav {
        gap: 18px;
    }
}

@media (max-width: 900px) {
    .header-inner {
        min-height: 68px;
        grid-template-columns: auto auto;
        justify-content: space-between;
    }

    .nav-toggle {
        display: block;
        font-size: 1.5rem;
    }

    .main-nav, .header-actions {
        display: none;
    }

    .main-nav.open {
        position: absolute;
        z-index: 20;
        top: 100%;
        right: 0px;
        left: 0px;
        display: flex;
        height: calc(-68px + 100vh);
        padding: 34px 24px;
        background: rgb(255, 253, 249);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        overflow-y: auto;
        box-shadow: rgba(20, 48, 76, 0.08) 0px 18px 40px;
    }

    .main-nav.open a {
        width: 100%;
        padding: 13px 0px;
        border-bottom: 1px solid var(--line-soft);
        font-size: 1rem;
    }

    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 620px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}