:root {
    --admin-bg: #f4f6f9;
    --admin-sidebar: #16202f;
    --admin-sidebar-strong: #0f1724;
    --admin-primary: #2374e1;
    --admin-primary-dark: #1b5fba;
    --admin-text: #182230;
    --admin-muted: #667085;
    --admin-border: #d9e0ea;
    --admin-card: #ffffff;
    --admin-success: #12805c;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--admin-text);
    background: var(--admin-bg);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0;
}

.admin-auth-body {
    min-height: 100vh;
    background: linear-gradient(135deg, #16202f 0%, #2374e1 52%, #f4f6f9 52%);
}

.admin-auth-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 440px;
    gap: 32px;
    min-height: 100vh;
    align-items: center;
    padding: 40px;
}

.admin-auth-panel {
    color: #fff;
    max-width: 620px;
}

.admin-auth-panel h1 {
    margin: 28px 0 12px;
    font-size: 44px;
    line-height: 1.05;
    font-weight: 800;
}

.admin-auth-panel p {
    max-width: 460px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 17px;
}

.admin-auth-brand,
.admin-sidebar-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: inherit;
    text-decoration: none;
}

.admin-brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    background: var(--admin-primary);
    color: #fff;
    font-weight: 800;
}

.admin-auth-brand small,
.admin-sidebar-brand small {
    display: block;
    color: currentColor;
    opacity: 0.7;
    font-size: 12px;
    text-transform: uppercase;
}

.admin-auth-card,
.admin-login-card {
    width: 100%;
}

.admin-login-card {
    background: var(--admin-card);
    border: 1px solid rgba(217, 224, 234, 0.8);
    border-radius: 8px;
    box-shadow: 0 24px 70px rgba(15, 23, 36, 0.18);
    padding: 32px;
}

.admin-login-card h2,
.admin-header h1,
.admin-panel h2,
.admin-empty-state h3 {
    margin: 0;
    font-weight: 800;
}

.admin-kicker {
    margin: 0 0 4px;
    color: var(--admin-muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.btn-primary {
    --bs-btn-bg: var(--admin-primary);
    --bs-btn-border-color: var(--admin-primary);
    --bs-btn-hover-bg: var(--admin-primary-dark);
    --bs-btn-hover-border-color: var(--admin-primary-dark);
}

.form-control {
    min-height: 46px;
    border-color: var(--admin-border);
    border-radius: 8px;
}

.admin-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
}

.admin-sidebar {
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: var(--admin-sidebar);
    color: #fff;
    padding: 20px 16px;
    overflow: hidden;
    z-index: 1040;
}

.admin-sidebar-brand {
    width: 100%;
    padding: 8px 8px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.admin-nav {
    display: grid;
    gap: 8px;
    align-content: start;
    flex: 1;
    margin-top: 20px;
    min-height: 0;
    overflow-y: auto;
    padding-right: 6px;
    scrollbar-color: rgba(255, 255, 255, 0.36) transparent;
    scrollbar-width: thin;
}

.admin-nav::-webkit-scrollbar {
    width: 6px;
}

.admin-nav::-webkit-scrollbar-track {
    background: transparent;
}

.admin-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.32);
    border-radius: 999px;
}

.admin-nav:hover::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.46);
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: rgba(255, 255, 255, 0.72);
    font: inherit;
    text-decoration: none;
    text-align: left;
}

.admin-nav-item span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 11px;
}

.admin-nav-badge {
    margin-left: auto;
    min-width: 22px;
    height: 22px;
    padding: 2px 7px;
    border-radius: 999px;
    background: #dc2626;
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    line-height: 18px;
    text-align: center;
}

.admin-nav-item:hover,
.admin-nav-item.active {
    background: var(--admin-sidebar-strong);
    color: #fff;
}

.admin-nav-group {
    display: grid;
    gap: 4px;
}

.admin-nav-parent {
    cursor: pointer;
}

.admin-nav-parent strong {
    flex: 1;
}

.admin-nav-parent small {
    width: 8px;
    height: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    opacity: 0.72;
    transform: rotate(45deg);
    transition: transform 160ms ease;
}

.admin-nav-group.is-open .admin-nav-parent small {
    transform: rotate(225deg);
}

.admin-nav-group.active .admin-nav-parent {
    background: rgba(15, 23, 36, 0.78);
    color: #fff;
}

.admin-nav-submenu {
    display: none;
    gap: 4px;
    padding-left: 42px;
}

.admin-nav-group.is-open .admin-nav-submenu {
    display: grid;
}

.admin-nav-subitem {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    min-height: 34px;
    padding: 7px 10px;
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.66);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.admin-nav-subitem .admin-nav-badge {
    margin-left: 8px;
    min-width: 20px;
    height: 20px;
    font-size: 11px;
    line-height: 16px;
}

.admin-nav-subitem:hover,
.admin-nav-subitem.active {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.admin-main {
    min-width: 0;
}

.admin-header {
    position: sticky;
    top: 0;
    z-index: 1010;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 76px;
    padding: 14px 28px;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--admin-border);
    backdrop-filter: blur(10px);
}

.admin-header-left,
.admin-header-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.admin-header h1 {
    font-size: 22px;
}

.admin-icon-button {
    display: inline-grid;
    gap: 4px;
    width: 42px;
    height: 42px;
    align-content: center;
    justify-content: center;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #fff;
}

.admin-icon-button span {
    width: 18px;
    height: 2px;
    background: var(--admin-text);
}

.admin-user-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 42px;
    padding: 6px 10px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #fff;
}

.admin-user-chip span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: #e7f0ff;
    color: var(--admin-primary-dark);
    font-weight: 800;
}

.admin-user-chip strong {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 14px;
}

.admin-content {
    padding: 28px;
}

.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.admin-stat-card,
.admin-panel {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: 8px;
}

.admin-stat-card {
    padding: 20px;
}

.admin-stat-card p {
    margin: 0 0 8px;
    color: var(--admin-muted);
    font-weight: 700;
}

.admin-stat-card strong {
    display: block;
    font-size: 30px;
    line-height: 1;
}

.admin-panel {
    overflow: hidden;
}

.admin-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 20px;
    border-bottom: 1px solid var(--admin-border);
}

.admin-empty-state {
    padding: 36px 20px;
}

.admin-empty-state p {
    max-width: 560px;
    margin: 8px 0 0;
    color: var(--admin-muted);
}

.admin-panel-body {
    padding: 20px;
}

.admin-filter-row {
    display: grid;
    grid-template-columns: minmax(180px, 260px) minmax(220px, 1fr) auto auto;
    gap: 10px;
    align-items: center;
    margin-bottom: 16px;
}

.admin-two-column,
.admin-three-column {
    display: grid;
    gap: 16px;
    align-items: start;
}

.admin-two-column {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-three-column {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.admin-mini-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
}

.admin-mini-grid > div {
    padding: 14px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #f8fafc;
}

.admin-mini-grid strong {
    display: block;
    font-size: 24px;
    line-height: 1;
}

.admin-mini-grid span {
    display: block;
    margin-top: 6px;
    color: var(--admin-muted);
    font-size: 13px;
    font-weight: 700;
}

.admin-inline-form {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 280px;
}

.admin-inline-form .form-control,
.admin-inline-form .form-select {
    min-height: 34px;
}

.admin-permission-form {
    padding: 14px 0;
    border-bottom: 1px solid var(--admin-border);
}

.admin-permission-form:first-child {
    padding-top: 0;
}

.admin-permission-form:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.admin-permission-form h3 {
    margin: 0 0 12px;
    font-size: 16px;
    font-weight: 800;
}

.admin-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 8px 12px;
}

.admin-checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    color: var(--admin-muted);
    font-size: 14px;
    font-weight: 700;
}

.admin-table {
    margin-bottom: 16px;
}

.admin-panel-body nav[role="navigation"] {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.admin-panel-body .pagination {
    margin: 0;
    gap: 4px;
    flex-wrap: wrap;
}

.admin-panel-body .page-link {
    min-width: 38px;
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-color: var(--admin-border);
    color: var(--admin-primary);
    font-weight: 700;
    border-radius: 8px;
}

.admin-panel-body .page-item:first-child .page-link,
.admin-panel-body .page-item:last-child .page-link {
    min-width: 88px;
}

.admin-panel-body .page-item.active .page-link {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: #fff;
}

.admin-panel-body .page-item.disabled .page-link {
    color: var(--admin-muted);
    background: #f8fafc;
}

.admin-panel-body nav[role="navigation"] p {
    margin: 0;
    color: var(--admin-muted);
    font-size: 14px;
}

.admin-table th {
    color: var(--admin-muted);
    font-size: 12px;
    text-transform: uppercase;
}

.admin-row-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.admin-form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.admin-shift-picker {
    display: grid;
    gap: 12px;
    max-height: 520px;
    overflow: auto;
    padding: 2px;
}

.admin-shift-day {
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #f8fafc;
    overflow: hidden;
}

.admin-shift-day-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--admin-border);
    background: #fff;
}

.admin-shift-day-header strong {
    font-size: 15px;
}

.admin-shift-day-header span,
.admin-shift-capacity {
    color: var(--admin-muted);
    font-size: 12px;
    font-weight: 700;
}

.admin-shift-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 10px;
    padding: 12px;
}

.admin-shift-option {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 8px 10px;
    min-height: 92px;
    padding: 12px;
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
}

.admin-shift-option:hover,
.admin-shift-option:has(input:checked) {
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(35, 116, 225, 0.08);
}

.admin-shift-option input {
    width: 18px;
    height: 18px;
    margin-top: 2px;
}

.admin-shift-time {
    display: block;
    font-size: 17px;
    font-weight: 800;
    line-height: 1.2;
}

.admin-shift-meta,
.admin-shift-capacity {
    grid-column: 2;
}

.admin-shift-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    color: var(--admin-muted);
    font-size: 13px;
}

.admin-shift-meta > span:first-child {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-shift-picker-empty {
    padding: 18px;
    border: 1px dashed var(--admin-border);
    border-radius: 8px;
    color: var(--admin-muted);
    background: #f8fafc;
}

.admin-code-input {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    font-size: 13px;
}

.admin-boundary-editor {
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    background: #fff;
    overflow: hidden;
}

.admin-boundary-editor-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    padding: 14px;
    border-bottom: 1px solid var(--admin-border);
}

.admin-boundary-editor-help {
    margin: 0;
    color: var(--admin-muted);
    font-size: 13px;
}

.admin-boundary-editor-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.admin-boundary-map {
    min-height: 300px;
    background: #eef2f7;
}

.admin-boundary-editor-status {
    min-height: 38px;
    padding: 10px 14px;
    border-top: 1px solid var(--admin-border);
    color: var(--admin-muted);
    font-size: 13px;
    font-weight: 700;
}

.admin-boundary-editor-status[data-status="success"] {
    color: var(--admin-success);
}

.admin-boundary-editor-status[data-status="danger"] {
    color: #b42318;
}

.admin-sidebar-backdrop {
    display: none;
}

@media (max-width: 991.98px) {
    .admin-auth-body {
        background: var(--admin-bg);
    }

    .admin-auth-shell {
        grid-template-columns: 1fr;
        padding: 22px;
    }

    .admin-auth-panel {
        color: var(--admin-text);
    }

    .admin-auth-panel h1 {
        font-size: 34px;
    }

    .admin-auth-panel p {
        color: var(--admin-muted);
    }

    .admin-shell {
        display: block;
    }

    .admin-sidebar {
        position: fixed;
        left: 0;
        transform: translateX(-100%);
        width: 260px;
        transition: transform 180ms ease;
    }

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

    .admin-shell.sidebar-open .admin-sidebar-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 1030;
        background: rgba(15, 23, 36, 0.48);
    }

    .admin-header,
    .admin-header-right {
        align-items: flex-start;
    }

    .admin-header {
        padding: 14px 18px;
    }

    .admin-header-right {
        flex-direction: column;
        gap: 8px;
    }

    .admin-user-chip strong {
        max-width: 150px;
    }

    .admin-content {
        padding: 18px;
    }

    .admin-stats-grid {
        grid-template-columns: 1fr;
    }

    .admin-filter-row {
        grid-template-columns: 1fr;
    }

    .admin-two-column,
    .admin-three-column {
        grid-template-columns: 1fr;
    }

    .admin-inline-form {
        align-items: stretch;
        flex-direction: column;
    }

    .admin-row-actions {
        justify-content: flex-start;
    }

    .admin-panel-body nav[role="navigation"] {
        align-items: flex-start;
        flex-direction: column;
    }

    .admin-boundary-editor-head {
        display: grid;
    }

    .admin-boundary-editor-actions {
        justify-content: flex-start;
    }
}

@media (max-width: 575.98px) {
    .admin-login-card {
        padding: 22px;
    }

    .admin-header {
        flex-direction: column;
        align-items: stretch;
    }

    .admin-header-left {
        align-items: flex-start;
    }
}