/*
 * Admin panel layout — modern sidebar + topbar.
 *
 * Clean, professional admin interface with a fixed sidebar and scrollable content area.
 * Permission-aware navigation with active states.
 */

/* ---- Admin body & layout grid --------------------------------------------------------------- */

.admin-body {
    background: var(--colour-surface-sunken);
    min-height: 100vh;
}

.admin-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

/* ---- Sidebar -------------------------------------------------------------------------------- */

.admin-sidebar {
    background: var(--colour-surface);
    border-right: 1px solid var(--colour-border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.admin-sidebar__brand {
    padding: var(--space-5) var(--space-5);
    border-bottom: 1px solid var(--colour-border);
}

.admin-sidebar__brand a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--colour-ink);
    font-weight: var(--weight-bold);
    font-size: var(--text-lg);
}

.admin-sidebar__badge {
    display: inline-flex;
    padding: 2px 8px;
    background: var(--colour-primary);
    color: var(--colour-primary-ink);
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ---- Admin navigation ----------------------------------------------------------------------- */

.admin-nav {
    flex: 1;
    padding: var(--space-4) var(--space-3);
    display: flex;
    flex-direction: column;
}

.admin-nav__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.admin-nav__item {
    margin: 0;
}

.admin-nav__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    text-decoration: none;
    color: var(--colour-ink-quiet);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    border-radius: var(--radius-md);
    transition: all var(--duration-fast) var(--easing);
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
}

.admin-nav__link svg {
    flex-shrink: 0;
    opacity: 0.7;
}

.admin-nav__link:hover {
    color: var(--colour-ink);
    background: var(--colour-surface-sunken);
}

.admin-nav__link.is-active {
    color: var(--colour-primary);
    background: var(--colour-primary-surface);
    font-weight: var(--weight-bold);
}

.admin-nav__link.is-active svg {
    opacity: 1;
}

.admin-nav__link--button {
    color: var(--colour-error);
}

.admin-nav__link--button:hover {
    background: var(--colour-error-surface);
}

.admin-nav__divider {
    height: 1px;
    background: var(--colour-border);
    margin: var(--space-3) 0;
}

.admin-nav__logout {
    margin: 0;
    padding: 0;
}

/* ---- Main content area ---------------------------------------------------------------------- */

.admin-main {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* ---- Topbar --------------------------------------------------------------------------------- */

.admin-topbar {
    background: var(--colour-surface);
    border-bottom: 1px solid var(--colour-border);
    padding: var(--space-4) var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    position: sticky;
    top: 0;
    z-index: 5;
}

.admin-topbar__title {
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    color: var(--colour-ink);
    margin: 0;
}

/* Right-hand side of the topbar: language switcher and signed-in identity. */
.admin-topbar__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-left: auto;
}

/* Signed-in identity, right side of the topbar. */
.admin-topbar__user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--colour-ink-quiet);
    white-space: nowrap;
}

.admin-topbar__user-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: var(--colour-primary-surface);
    color: var(--colour-primary);
    font-size: var(--text-sm);
    font-weight: var(--weight-bold);
}

/* A stored picture fills the same circle as the generated initial. */
img.admin-topbar__user-avatar--image {
    flex-shrink: 0;
    object-fit: cover;
}

.admin-topbar__user-name {
    font-weight: var(--weight-medium);
}

/* ---- Content area --------------------------------------------------------------------------- */

.admin-content {
    flex: 1;
    padding: var(--space-6);
}

.admin-content:focus {
    outline: none;
}

/* ---- Responsive ----------------------------------------------------------------------------- */

@media (max-width: 1024px) {
    .admin-layout {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        position: relative;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--colour-border);
    }

    .admin-nav {
        flex-direction: row;
        overflow-x: auto;
        padding: var(--space-3);
    }

    .admin-nav__list {
        flex-direction: row;
        gap: var(--space-1);
        flex-wrap: nowrap;
    }

    .admin-nav__divider {
        display: none;
    }

    .admin-nav__list:last-child {
        margin-left: auto;
    }

    .admin-topbar {
        position: relative;
    }
}

@media (max-width: 640px) {
    .admin-content {
        padding: var(--space-4);
    }

    .admin-topbar {
        padding: var(--space-3) var(--space-4);
        flex-wrap: wrap;
    }

    .admin-topbar__user-name {
        display: none;
    }
}