/* ==========================================================================
   Sobremesa — header (mast), primary nav, mobile drawer
   ========================================================================== */

.mast {
    position: sticky;
    top: 0;
    z-index: 200;
    background-color: var(--paper);
    border-bottom: 1px solid var(--line);
}

.mast-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4.5rem;
}

/* --------------------------------------------------------------------------
   Wordmark
   -------------------------------------------------------------------------- */
.wordmark {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    text-decoration: none;
    color: var(--ink);
}

.wordmark:hover {
    color: var(--plum);
}

.wordmark span {
    color: var(--berry);
}

/* --------------------------------------------------------------------------
   Desktop navigation
   -------------------------------------------------------------------------- */
.mast-nav {
    display: none;
}

.mast-links {
    display: flex;
    align-items: center;
    gap: 1.6rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.mast-links a {
    font-size: 0.97rem;
    text-decoration: none;
    color: var(--ink);
}

.mast-links a:hover {
    color: var(--berry);
}

.mast-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.mast-cta {
    display: none;
}

/* --------------------------------------------------------------------------
   Burger trigger
   -------------------------------------------------------------------------- */
.nav-trigger {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 3rem;
    height: 3rem;
    padding: 0.6rem;
    background-color: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.nav-trigger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--ink);
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-trigger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

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

/* --------------------------------------------------------------------------
   Mobile drawer (fullscreen overlay)
   No backdrop-filter / transform / filter on .mast or any ancestor.
   -------------------------------------------------------------------------- */
.drawer {
    position: fixed;
    inset: 0;
    z-index: 210;
    display: flex;
    flex-direction: column;
    padding: 6rem 1.5rem 2.5rem;
    background-color: var(--paper);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.drawer.is-open {
    opacity: 1;
    visibility: visible;
}

.drawer-links {
    margin: 0;
    padding: 0;
    list-style: none;
}

.drawer-links li {
    border-bottom: 1px solid var(--line);
}

.drawer-links a {
    display: block;
    padding: 1rem 0;
    font-family: var(--font-display);
    font-size: 1.6rem;
    text-decoration: none;
    color: var(--ink);
}

.drawer-links a:hover {
    color: var(--berry);
}

.drawer-foot {
    margin-top: auto;
    padding-top: 2rem;
    font-size: 0.95rem;
    color: var(--muted);
}

.drawer-foot a {
    color: var(--plum);
}

.drawer-close {
    position: absolute;
    top: 1.4rem;
    right: 1.5rem;
    width: 3rem;
    height: 3rem;
    font-size: 1.6rem;
    line-height: 1;
    color: var(--ink);
    background-color: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

body.drawer-lock {
    overflow: hidden;
}

/* --------------------------------------------------------------------------
   Desktop breakpoint
   -------------------------------------------------------------------------- */
@media (min-width: 64rem) {
    .mast-nav {
        display: block;
    }

    .mast-cta {
        display: inline-flex;
    }

    .nav-trigger {
        display: none;
    }

    .drawer {
        display: none;
    }
}