/* ============================================
   App Layout, Header, Navigation
   ============================================ */
@media (max-width: 1100px) {
    .admin-shell {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: min(84vw, 320px);
        z-index: 90;
        border-right: 1px solid var(--sidebar-edge);
        border-bottom: 0;
        transform: translateX(-102%);
        transition: transform 0.2s ease;
        overflow-y: auto;
    }

    .admin-main {
        padding: 1rem 1rem 1.5rem;
    }

    .admin-topbar {
        justify-content: flex-start;
        gap: 0.6rem;
    }

    .admin-topbar h1 {
        margin-right: auto;
        text-align: left;
    }

    .admin-menu-toggle {
        display: inline-flex;
    }

    .admin-sidebar-backdrop {
        position: fixed;
        inset: 0;
        z-index: 80;
        background: rgba(15, 23, 42, 0.42);
        backdrop-filter: blur(1px);
    }

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

    .admin-shell.is-menu-open .admin-sidebar-backdrop {
        display: block;
    }

    .admin-shell.is-menu-open .admin-menu-toggle span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    .admin-shell.is-menu-open .admin-menu-toggle span:nth-child(2) {
        opacity: 0;
    }

    .admin-shell.is-menu-open .admin-menu-toggle span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
}

/* ============================================
   Shared Cards, Filters And Tables
   ============================================ */
@media (max-width: 900px) {
    body {
        overflow-x: hidden;
    }

    .admin-topbar {
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 0.55rem;
        flex-wrap: wrap;
    }

    .admin-filter-form {
        grid-template-columns: 1fr;
        gap: 0.65rem;
        padding: 0.8rem 0.85rem;
    }

    .admin-filter-form label {
        display: block;
        font-size: 0.82rem;
        font-weight: 600;
        color: #6b7280;
        max-width: 360px;
    }

    .admin-filter-actions {
        width: 100%;
        align-items: center;
        justify-content: flex-start;
        flex-wrap: wrap;
        margin-top: 0.25rem;
        padding-top: 0.25rem;
        border-top: 1px dashed #e5e7eb;
    }

    .admin-panel {
        overflow-x: auto;
        overflow-y: hidden;
        max-width: 100%;
        -webkit-overflow-scrolling: touch;
    }

    .admin-panel > .admin-table {
        display: table;
        min-width: 780px;
        width: max-content;
        max-width: none;
    }

    .admin-panel > h2 {
        position: sticky;
        left: 0;
        z-index: 2;
    }

    .admin-panel > .admin-table th,
    .admin-panel > .admin-table td {
        padding: 0.58rem 0.62rem;
        font-size: 0.84rem;
        white-space: nowrap;
        vertical-align: middle;
    }

    .admin-panel > .admin-table th {
        font-size: 0.68rem;
    }

    .admin-row-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 0.3rem;
    }

    .admin-btn {
        padding: 0.36rem 0.55rem;
        font-size: 0.72rem;
    }
}

@media (max-width: 640px) {
    .admin-main {
        padding: 0.85rem 0.7rem 1.2rem;
    }

    .admin-topbar h1 {
        font-size: 1.25rem;
    }

    .admin-panel h2 {
        font-size: 0.95rem;
        padding: 0.75rem 0.8rem;
    }

    body.admin-page-settings .admin-settings-form {
        padding: 0.8rem;
        gap: 0.7rem;
    }

    .admin-filter-form {
        padding: 0.75rem;
        gap: 0.55rem;
        background: #fafbfc;
    }

    .admin-filter-form label {
        max-width: 320px;
    }

    .admin-filter-form .portal-input {
        margin-top: 0.3rem;
    }

    .admin-filter-actions {
        display: grid;
        grid-template-columns: 1fr;
        gap: 0.45rem;
        width: 100%;
    }

    .admin-filter-actions .portal-btn-primary,
    .admin-filter-actions .admin-btn-reset {
        width: 100%;
        justify-content: center;
    }

    body.admin-page-settings .admin-chat-list {
        margin: 0.65rem 0.8rem 0;
    }

    .admin-btn,
    .admin-btn-reset,
    .portal-btn-primary {
        min-height: 40px;
    }
}

/* ============================================
   Auth Pages
   ============================================ */
@media (max-width: 640px) {
    body.portal-page-center {
        align-items: center;
        padding: 0.9rem 0.6rem 1rem;
    }

    .portal-card {
        padding: 1.2rem 0.95rem 1.05rem;
    }

    .portal-title {
        font-size: 1.2rem;
    }

    .portal-input--code {
        font-size: 1.05rem;
        letter-spacing: 0.25em;
    }
}