/* ===================================================================
 * panels.css
 * Header, Navigation, mobile Drawer, Footer-Topblock, sticky Bar.
 * BEM-Stil: <block>--<element> (double-dash).
 * =================================================================== */

/* -------------------------------------------------------------------
 * 1. Header (site-top)
 * ----------------------------------------------------------------- */
.site-top {
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--paper-pure);
    border-bottom: 1px solid var(--rule);
}

.site-top--row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 0;
}

/* Logotype */
.logotype {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.logotype:hover {
    color: var(--primary-deep);
}

.logotype--dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    flex: 0 0 auto;
}

.logotype--wordmark {
    color: var(--ink);
}

.logotype--sub {
    font-family: var(--font-body);
    font-size: 0.74rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--muted);
    margin-left: 0.25rem;
}

/* Nav primary */
.nav {
    display: none;
}

.nav--list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 1.6rem;
}

.nav--link {
    color: var(--ink-soft);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.25rem 0;
    border-bottom: 2px solid transparent;
    transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.nav--link:hover,
.nav--link[aria-current='page'] {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.site-top--cta {
    display: none;
}

/* Burger button */
.menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: transparent;
    border: 1px solid var(--rule);
    border-radius: var(--r-sm);
    color: var(--ink);
}

.menu-toggle--bar,
.menu-toggle--bar::before,
.menu-toggle--bar::after {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.menu-toggle--bar {
    position: relative;
}

.menu-toggle--bar::before,
.menu-toggle--bar::after {
    content: '';
    position: absolute;
    left: 0;
}

.menu-toggle--bar::before {
    top: -7px;
}

.menu-toggle--bar::after {
    top: 7px;
}

.menu-toggle[aria-expanded='true'] .menu-toggle--bar {
    background: transparent;
}

.menu-toggle[aria-expanded='true'] .menu-toggle--bar::before {
    top: 0;
    transform: rotate(45deg);
}

.menu-toggle[aria-expanded='true'] .menu-toggle--bar::after {
    top: 0;
    transform: rotate(-45deg);
}

/* Mobile overlay */
.drawer {
    position: fixed;
    inset: 0;
    z-index: 60;
    background: var(--paper-pure);
    transform: translateY(-100%);
    visibility: hidden;
    transition: transform 0.3s var(--ease), visibility 0s linear 0.3s;
    overflow-y: auto;
    padding: 5.5rem 1.5rem 3rem;
}

.drawer[data-open='true'] {
    transform: translateY(0);
    visibility: visible;
    transition: transform 0.3s var(--ease);
}

.drawer--list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 1rem;
}

.drawer--link {
    display: block;
    padding: 0.75rem 0;
    color: var(--ink);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1.4rem;
    border-bottom: 1px solid var(--rule);
}

.drawer--link:hover,
.drawer--link[aria-current='page'] {
    color: var(--primary);
}

.drawer--cta {
    margin-top: 2rem;
}

/* -------------------------------------------------------------------
 * 2. Footer
 * ----------------------------------------------------------------- */
.outro {
    background: var(--ink);
    color: #c7d0db;
    padding: 3.5rem 0 1.5rem;
}

.outro a {
    color: #e6edf3;
    text-decoration: none;
}

.outro a:hover {
    color: var(--paper-pure);
    text-decoration: underline;
}

.outro--grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.outro--title {
    margin: 0 0 0.9rem;
    color: var(--paper-pure);
    font-family: var(--font-body);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.outro--list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.45rem;
    font-size: 0.95rem;
}

.outro--strap {
    border-top: 1px solid #1f2f44;
    padding-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #8b97a6;
}

/* -------------------------------------------------------------------
 * 3. Tablet+
 * ----------------------------------------------------------------- */
@media (min-width: 768px) {
    .nav {
        display: block;
    }

    .site-top--cta {
        display: inline-flex;
    }

    .menu-toggle {
        display: none;
    }

    .outro--grid {
        grid-template-columns: 1.4fr 1fr 1fr 1fr;
    }
}