/* Explain: Core CSS styles for the administrator interface. */
.admin-body {
    background: #eef2f8;
}

.admin-gate-wrap {
    display: flex;
    min-height: 100dvh;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    background: var(--primary-color);
}

.admin-gate-card {
    width: 100%;
    max-width: 28rem;
    border-radius: 1.5rem;
    background: #ffffff;
    padding: 2rem;
    box-shadow: 0 30px 80px rgba(15, 36, 68, 0.4);
}

@media (max-width: 480px) {
    .admin-gate-card {
        padding: 1.5rem;
    }
}

.admin-shell {
    display: flex;
    min-height: 100vh;
}

.admin-shell.hidden {
    display: none !important;
}

.admin-sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 60;
    display: flex;
    width: 17rem;
    flex-direction: column;
    overflow-y: auto;
    background: var(--primary-color);
    color: #ffffff;
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding: 1.1rem 1.25rem;
}

.admin-brand-mark {
    display: inline-flex;
    height: 2.6rem;
    width: 2.6rem;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    border-radius: 0.8rem;
    background: rgba(255, 255, 255, 0.14);
    font-size: 1.15rem;
}

.admin-nav {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    padding: 0.9rem 0.75rem 2rem;
}

.admin-nav-group > summary {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    list-style: none;
    border-radius: 0.8rem;
    padding: 0.7rem 0.85rem;
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 200ms ease;
}

.admin-nav-group > summary::-webkit-details-marker {
    display: none;
}

.admin-nav-group > summary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.admin-caret {
    margin-left: auto;
    font-size: 0.65rem;
    transition: transform 200ms ease;
}

.admin-nav-group[open] .admin-caret {
    transform: rotate(180deg);
}

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    border-radius: 0.8rem;
    padding: 0.65rem 0.85rem;
    color: rgba(255, 255, 255, 0.86);
    font-size: 0.88rem;
    font-weight: 600;
    transition: background 200ms ease, color 200ms ease;
}

.admin-nav-link i {
    width: 1.1rem;
    text-align: center;
}

.admin-nav-link:hover,
.admin-nav-link.is-active {
    background: rgba(255, 255, 255, 0.16);
    color: #ffffff;
}

.admin-nav-sub {
    margin-left: 1.1rem;
    padding: 0.5rem 0.85rem;
    font-size: 0.84rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75);
}

.admin-nav-logout {
    margin-top: 0.5rem;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: transparent;
    text-align: left;
}

.admin-main {
    flex: 1;
    min-width: 0;
    margin-left: 17rem;
}

.admin-topbar {
    position: sticky;
    top: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.96);
    padding: 0.7rem 1.1rem;
    backdrop-filter: blur(12px);
}

.admin-search {
    display: flex;
    min-height: 2.7rem;
    flex: 1;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: var(--surface-color);
    padding-left: 1.1rem;
    padding-right: 0.3rem;
}

.admin-search input {
    flex: 1;
    min-width: 0;
    border: 0;
    background: transparent;
    color: var(--text-color);
    font-size: 0.88rem;
    outline: none;
}

.admin-search button {
    display: inline-flex;
    height: 2.2rem;
    width: 2.2rem;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--text-color);
}

.admin-topbar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.admin-icon-btn {
    position: relative;
    display: inline-flex;
    height: 2.6rem;
    width: 2.6rem;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: #ffffff;
    color: var(--text-color);
    transition: background 200ms ease;
}

.admin-icon-btn:hover {
    background: var(--surface-color);
}

.admin-dot {
    position: absolute;
    top: 0.6rem;
    right: 0.65rem;
    height: 0.45rem;
    width: 0.45rem;
    border-radius: 999px;
    background: #e11d48;
}

.admin-user {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding-left: 0.4rem;
}

.admin-avatar {
    display: inline-flex;
    height: 2.6rem;
    width: 2.6rem;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-color);
}

.admin-avatar-sm {
    height: 2.1rem;
    width: 2.1rem;
    font-size: 0.8rem;
}

@media (max-width: 1023px) {
    .admin-sidebar {
        transform: translateX(-100%);
        transition: transform 300ms ease;
    }

    .admin-sidebar.is-open {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

    .admin-user {
        display: none;
    }
}