/* ==========================================================================
   ARMAND DIGITAL — SHARED HEADER
   File: assets/css/header.css
   Depends on the design tokens and reset in base.css.
   ========================================================================== */

/* ==========================================================================
   03. HEADER
   ========================================================================== */

.site-header {
    position: absolute;
    z-index: 100;

    top: 0;
    left: 0;

    width: 100%;
    height: 86px;

    padding: 0 var(--page-gutter);

    display: grid;

    grid-template-columns:
        minmax(270px, 1fr) auto minmax(270px, 1fr);

    align-items: center;

    gap: 40px;

    border-bottom: 1px solid var(--paper-08);
}

/* Brand: SVG artwork, constrained independently of its intrinsic dimensions. */
.site-brand {
    justify-self: start;
    display: inline-flex;
    align-items: center;
    min-width: 0;
}

.site-brand__logo {
    display: block;
    width: clamp(130px, 13vw, 180px);
    max-width: 100%;
    height: auto;
}

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

    gap: clamp(28px, 3vw, 52px);
}

.site-nav a {
    position: relative;

    padding: 8px 0;

    color: var(--paper-72);

    font-size: 0.84rem;
    font-weight: 650;

    letter-spacing: 0.13em;
    text-transform: uppercase;
}

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

    position: absolute;

    right: 0;
    bottom: 0;
    left: 0;

    height: 1px;

    background: var(--signal);

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

    transition: transform 280ms var(--ease-out);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
    transform: scaleX(1);
    transform-origin: left;
}

.site-header__cta {
    justify-self: end;

    display: inline-flex;
    align-items: center;

    gap: 17px;

    color: var(--paper);

    font-size: 0.84rem;
    font-weight: 700;

    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.site-header__cta>span:last-child {
    color: var(--signal);

    font-size: 0.96rem;

    transition: transform 260ms var(--ease-out);
}

.site-header__cta:hover>span:last-child {
    transform: translateX(5px);
}

/* Mobile navigation trigger is absent from the desktop layout. */
.site-header__menu {
    display: none;
}

/* ==========================================================================
   RESPONSIVE HEADER
   ========================================================================== */

@media (max-width: 1099px) {
    .site-header {
        height: 68px;
        padding-inline: 24px;
        grid-template-columns: minmax(0, 1fr) auto auto;
        gap: 20px;
    }

    .site-brand__logo {
        width: 150px;
    }

    .site-header__menu {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 9px;
        min-height: 44px;
        padding: 0 4px;
        color: var(--paper);
        font-size: 0.72rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        cursor: pointer;
    }

    .site-header__menu-icon {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 17px;
        height: 20px;
    }

    .site-header__menu-icon span {
        display: block;
        width: 100%;
        height: 1px;
        background: var(--signal);
        transition: transform 220ms var(--ease-out);
    }

    .site-header__menu[aria-expanded="true"] .site-header__menu-icon span:first-child {
        transform: translateY(3px) rotate(45deg);
    }

    .site-header__menu[aria-expanded="true"] .site-header__menu-icon span:last-child {
        transform: translateY(-3px) rotate(-45deg);
    }

    .site-nav {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 8px 24px 18px;
        border-bottom: 1px solid var(--paper-18);
        background: var(--ink);
        box-shadow: 0 20px 36px rgba(0, 0, 0, 0.35);
    }

    .site-nav.is-open {
        display: flex;
    }

    .site-nav a {
        padding: 15px 0;
        border-bottom: 1px solid var(--paper-08);
    }

    .site-header__cta {
        white-space: nowrap;
    }
}

@media (max-width: 479px) {
    .site-header {
        padding-inline: 18px;
        gap: 12px;
    }

    .site-brand__logo {
        width: 130px;
    }

    .site-header__menu {
        gap: 5px;
        font-size: 0.64rem;
        letter-spacing: 0.03em;
    }

    .site-header__menu-icon {
        width: 14px;
    }

    .site-nav {
        padding-inline: 18px;
    }

    .site-header__cta {
        gap: 7px;
        font-size: 0;
        letter-spacing: 0;
    }

    .site-header__cta-label {
        font-size: 0;
    }

    .site-header__cta-label::after {
        content: "DÉMARRER";
        font-size: 0.69rem;
        font-weight: 700;
        letter-spacing: 0.07em;
    }

    .site-header__cta>span:last-child {
        font-size: 0.9rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header__menu-icon span {
        transition: none;
    }
}