:root {
    color: #0f172a;
    background:
        radial-gradient(circle at top left, rgba(96, 165, 250, 0.18), transparent 24%),
        radial-gradient(circle at bottom right, rgba(251, 191, 36, 0.14), transparent 20%),
        linear-gradient(180deg, #f8fbff 0%, #edf4ff 46%, #f8fafc 100%);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.5;
    font-weight: 400;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    --bg: #f6faff;
    --bg-soft: #eff6ff;
    --surface: rgba(255, 255, 255, 0.9);
    --surface-strong: rgba(255, 255, 255, 0.98);
    --surface-muted: rgba(248, 250, 252, 0.95);
    --line: rgba(148, 163, 184, 0.22);
    --line-strong: rgba(96, 165, 250, 0.34);
    --text: #0f172a;
    --muted: #64748b;
    --muted-soft: #94a3b8;
    --primary: #2563eb;
    --primary-strong: #1d4ed8;
    --primary-soft: rgba(219, 234, 254, 0.9);
    --success: #16a34a;
    --success-soft: rgba(220, 252, 231, 0.92);
    --warning: #d97706;
    --warning-soft: rgba(255, 237, 213, 0.96);
    --critical: #e11d48;
    --critical-soft: rgba(255, 228, 230, 0.96);
    --neutral: #475569;
    --neutral-soft: rgba(241, 245, 249, 0.96);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 18px;
    --radius-sm: 14px;
    --shadow: 0 24px 70px rgba(15, 23, 42, 0.08);
    --shadow-soft: 0 14px 40px rgba(37, 99, 235, 0.09);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    min-height: 100vh;
    color: var(--text);
    background: transparent;
}

body::before,
body::after {
    content: '';
    position: fixed;
    inset: auto;
    pointer-events: none;
    z-index: 0;
    border-radius: 999px;
    filter: blur(20px);
}

body::before {
    width: 320px;
    height: 320px;
    top: -120px;
    right: -80px;
    background: rgba(96, 165, 250, 0.18);
}

body::after {
    width: 260px;
    height: 260px;
    left: -80px;
    bottom: 80px;
    background: rgba(250, 204, 21, 0.14);
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
    border: 0;
}

input,
select,
textarea {
    width: 100%;
    color: var(--text);
    background: var(--surface-strong);
    border: 1px solid var(--line);
    outline: none;
    transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

textarea {
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: rgba(37, 99, 235, 0.48);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

p:last-child {
    margin-bottom: 0;
}

a {
    color: inherit;
}

table {
    width: 100%;
    border-collapse: collapse;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.5);
    border-radius: 999px;
}

::-webkit-scrollbar-track {
    background: rgba(226, 232, 240, 0.58);
}

#root {
    position: relative;
    z-index: 1;
}

.app-shell {
    max-width: 1680px;
    margin: 0 auto;
    padding: 24px;
}

.two-column-shell {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.content-shell,
.page-stack,
.dashboard-column,
.workflow-grid,
.master-grid {
    display: grid;
    gap: 24px;
    min-width: 0;
}

.glass-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.9));
    border: 1px solid rgba(191, 219, 254, 0.55);
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
    border-radius: var(--radius-xl);
}

.topbar,
.sidebar,
.metric-card,
.table-card,
.form-card,
.workflow-card,
.rack-shell,
.insight-card,
.alert-stack-card,
.scanner-card,
.slot-detail-card,
.auth-card,
.login-panel,
.tab-card {
    padding: 24px;
}

.eyebrow,
.panel-label {
    margin: 0 0 8px;
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 800;
    color: var(--primary);
}

.hero-copy,
.helper-copy,
.field-wrap span,
.metric-card span,
.metric-card p,
.summary-banner span,
.validation-banner span,
.toast p,
.quick-login-card span,
.quick-login-card small,
.headline-alert span,
.legend-chip,
.slot-package-item span,
.slot-package-item small,
.sample-strip>span,
.slot-stat-grid span,
.summary-grid span,
.sidebar-metric-grid span,
.nav-item span {
    color: var(--muted);
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 430px);
    gap: 28px;
    width: min(1160px, 100%);
    align-items: stretch;
    overflow: hidden;
}

.login-copy {
    padding: 16px;
    display: grid;
    align-content: center;
    gap: 22px;
}

.brand-hero-mark {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.brand-logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    flex: 0 0 auto;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.96);
    padding: 10px;
    box-shadow: 0 14px 26px rgba(37, 99, 235, 0.12);
    border: 1px solid rgba(191, 219, 254, 0.6);
}

.brand-logo-lg {
    width: 72px;
    height: 72px;
    padding: 14px;
    border-radius: 22px;
}

.login-copy h1 {
    font-size: clamp(1.9rem, 3vw, 3.2rem);
    line-height: 1.04;
    margin-bottom: 0;
}

.feature-pills,
.hero-legend,
.tab-row,
.toggle-row,
.sample-chip-row,
.toolbar-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.toolbar-row {
    align-items: flex-end;
    justify-content: flex-end;
    width: 100%;
}

.feature-pills span,
.legend-chip,
.tab-pill,
.sample-chip,
.quick-login-card,
.nav-item,
.status-pill,
.headline-alert,
.summary-banner,
.validation-banner,
.alert-card,
.slot-package-item,
.sidebar-metric-grid article,
.metric-card,
.summary-grid article,
.slot-stat-grid article,
.inline-meta,
.group-chip,
.bay-chip,
.level-chip,
.stage-spacer,
.empty-card {
    border: 1px solid rgba(148, 163, 184, 0.18);
}

.feature-pills span,
.legend-chip,
.tab-pill,
.sample-chip,
.status-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 10px 14px;
    background: var(--surface-strong);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
}

.auth-card {
    display: grid;
    gap: 16px;
    align-content: center;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(239, 246, 255, 0.92));
}

.field-wrap {
    display: grid;
    gap: 8px;
    min-width: 0;
    align-content: start;
}

.field-wrap span {
    font-size: 0.84rem;
    font-weight: 700;
}

.field-wrap input,
.field-wrap select,
.field-wrap textarea {
    border-radius: 16px;
    padding: 13px 15px;
    min-height: 48px;
}

.field-wrap textarea {
    min-height: 112px;
}

.compact-field {
    min-width: 180px;
}

.quick-login-grid {
    display: grid;
    gap: 12px;
}

.quick-login-card {
    text-align: left;
    border-radius: 18px;
    background: rgba(248, 250, 252, 0.92);
    padding: 14px;
    display: grid;
    gap: 4px;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.quick-login-card strong,
.nav-item strong,
.metric-card strong,
.slot-detail-card h3,
.summary-grid strong,
.slot-stat-grid strong,
.sidebar-profile strong,
.section-head h2,
.topbar h1,
.workflow-card h2,
.auth-card h2,
.login-copy h1,
.brand-block h2 {
    color: var(--text);
}

.workflow-card h2,
.form-card h2,
.table-card h2,
.slot-detail-card h3,
.auth-card h2,
.section-head h2 {
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 18px;
    border-radius: 16px;
    font-weight: 700;
    transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background 160ms ease;
    white-space: nowrap;
}

.btn:hover,
.tab-pill:hover,
.sample-chip:hover,
.quick-login-card:hover,
.nav-item:hover,
.slot-shell:hover,
.status-pill:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
    color: white;
    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.24);
}

.btn-secondary,
.btn-ghost {
    background: var(--surface-strong);
    color: var(--text);
    border: 1px solid rgba(148, 163, 184, 0.22);
}

.btn-danger {
    background: var(--critical-soft);
    color: #be123c;
    border: 1px solid rgba(244, 63, 94, 0.18);
}

.btn-sm {
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 0.88rem;
}

.btn-block {
    width: 100%;
}

.sidebar {
    position: sticky;
    top: 22px;
    display: grid;
    gap: 18px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 248, 255, 0.96));
}

.brand-block,
.sidebar-profile {
    display: flex;
    gap: 14px;
    align-items: center;
}

.brand-block {
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.14);
}

.brand-copy {
    min-width: 0;
}

.brand-icon,
.avatar-pill {
    width: 52px;
    height: 52px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #60a5fa, #2563eb);
    color: white;
    font-weight: 900;
    font-size: 1.1rem;
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.18);
}

.nav-stack,
.alert-stack,
.slot-package-list {
    display: grid;
    gap: 12px;
}

.nav-item {
    width: 100%;
    text-align: left;
    display: grid;
    gap: 4px;
    padding: 14px 16px;
    border-radius: 18px;
    background: rgba(248, 250, 252, 0.92);
}

.nav-item.active,
.tab-pill.active {
    background: linear-gradient(135deg, rgba(219, 234, 254, 0.94), rgba(191, 219, 254, 0.86));
    border-color: rgba(96, 165, 250, 0.42);
    color: var(--primary-strong);
}

.sidebar-metric-grid,
.metric-card-grid,
.summary-grid,
.slot-stat-grid,
.filters-grid {
    display: grid;
    gap: 14px;
}

.sidebar-metric-grid,
.metric-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sidebar-metric-grid article,
.metric-card,
.summary-grid article,
.slot-stat-grid article {
    border-radius: 18px;
    padding: 16px;
    background: var(--surface-strong);
}

.summary-grid article,
.slot-stat-grid article,
.sidebar-metric-grid article,
.metric-card {
    display: grid;
    align-content: start;
    gap: 4px;
}

.sidebar-metric-grid article span,
.summary-grid article span,
.slot-stat-grid article span,
.metric-card span {
    display: block;
    margin-bottom: 6px;
}

.sidebar-metric-grid article strong,
.summary-grid article strong,
.slot-stat-grid article strong {
    display: block;
}

.topbar {
    display: grid;
    gap: 18px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(239, 246, 255, 0.92));
}

.topbar-shell {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
}

.topbar-copy {
    min-width: 0;
    max-width: 720px;
}

.topbar-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.page-title {
    font-size: clamp(1.35rem, 2.1vw, 2rem);
    line-height: 1.15;
    margin-bottom: 8px;
    max-width: 20ch;
}

.page-subtitle {
    max-width: 68ch;
}

.page-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 12px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(59, 130, 246, 0.18));
    border: 1px solid rgba(96, 165, 250, 0.34);
    color: var(--primary-strong);
    font-size: 0.82rem;
    font-weight: 700;
}

.page-badge.subtle {
    background: rgba(255, 255, 255, 0.82);
    color: var(--neutral);
    border-color: rgba(148, 163, 184, 0.18);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    display: inline-block;
    margin-right: 8px;
}

.legend-dot.available {
    background: var(--success);
}

.legend-dot.occupied {
    background: #ec4899;
}

.legend-dot.full {
    background: var(--warning);
}

.headline-alerts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.legend-row {
    gap: 12px;
}

.headline-alert,
.summary-banner,
.validation-banner,
.alert-card,
.slot-package-item {
    padding: 14px 16px;
    border-radius: 18px;
    background: var(--surface-strong);
}

.headline-alert strong,
.summary-banner strong,
.validation-banner strong,
.alert-card strong,
.slot-package-item strong {
    display: block;
    color: var(--text);
    margin-bottom: 4px;
}

.headline-alert.critical,
.alert-card.critical {
    border-color: rgba(244, 63, 94, 0.22);
    background: var(--critical-soft);
}

.headline-alert.warning,
.alert-card.warning,
.validation-banner.warn {
    border-color: rgba(245, 158, 11, 0.24);
    background: var(--warning-soft);
}

.headline-alert.neutral,
.alert-card.neutral {
    border-color: rgba(148, 163, 184, 0.22);
    background: var(--neutral-soft);
}

.dashboard-grid-lg {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) 360px;
    gap: 24px;
}

.section-head {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.section-head>div {
    min-width: 0;
}

.compact-gap {
    margin-bottom: 8px;
}

.metric-card strong {
    display: block;
    font-size: 2rem;
    margin: 8px 0 4px;
}

.metric-card {
    position: relative;
    overflow: hidden;
}

.metric-card::after {
    content: '';
    position: absolute;
    inset: auto -20px -20px auto;
    width: 88px;
    height: 88px;
    border-radius: 999px;
    background: rgba(96, 165, 250, 0.1);
}

.rack-shell {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(239, 246, 255, 0.92));
}

.rack-layout-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 18px;
    align-items: start;
}

.warehouse-viewport {
    overflow: auto;
    padding: 16px;
    border-radius: 22px;
    border: 1px solid rgba(96, 165, 250, 0.18);
    background:
        radial-gradient(circle at top, rgba(191, 219, 254, 0.55), transparent 28%),
        linear-gradient(180deg, #eff6ff 0%, #eaf2ff 100%);
}

.warehouse-stage {
    min-width: 760px;
}

.stage-group-row,
.stage-bay-row,
.level-row {
    display: grid;
    gap: 12px;
    align-items: center;
}

.stage-group-row,
.stage-bay-row {
    margin-bottom: 12px;
}

.group-chip,
.bay-chip,
.level-chip,
.stage-spacer {
    min-height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    color: var(--primary-strong);
    font-weight: 700;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.06);
}

.group-chip {
    min-height: 46px;
    color: #92400e;
    background: linear-gradient(180deg, #fff7ed, #ffedd5);
}

.stage-levels {
    display: grid;
    gap: 14px;
}

.slot-shell {
    position: relative;
    background: transparent;
    padding: 4px;
    border-radius: 20px;
}

.slot-frame {
    position: relative;
    display: block;
    height: 110px;
    border-radius: 18px;
    background: linear-gradient(180deg, #e2e8f0, #cbd5e1);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.88),
        inset 0 -18px 24px rgba(100, 116, 139, 0.14),
        0 12px 26px rgba(100, 116, 139, 0.14);
}

.slot-post,
.slot-beam {
    position: absolute;
    background: linear-gradient(180deg, #f59e0b, #ea580c);
    border-radius: 999px;
}

.slot-post {
    top: 12px;
    bottom: 12px;
    width: 4px;
}

.slot-post.left {
    left: 12px;
}

.slot-post.right {
    right: 12px;
}

.slot-beam {
    left: 12px;
    right: 12px;
    height: 4px;
}

.slot-beam.top {
    top: 12px;
}

.slot-beam.middle {
    bottom: 14px;
}

.slot-pallet {
    position: absolute;
    left: 22px;
    right: 22px;
    top: 24px;
    bottom: 18px;
    border-radius: 12px;
    box-shadow:
        inset 0 -12px 18px rgba(15, 23, 42, 0.12),
        0 8px 18px rgba(100, 116, 139, 0.12);
}

.slot-pallet.available {
    background: linear-gradient(180deg, #4ade80, #16a34a);
}

.slot-pallet.occupied {
    background: linear-gradient(180deg, #fb7185, #e11d48);
}

.slot-pallet.full {
    background: linear-gradient(180deg, #fbbf24, #f97316);
}

.slot-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 8px;
    text-align: center;
    color: white;
    font-size: 0.74rem;
    font-weight: 800;
}

.slot-shell.active .slot-frame {
    box-shadow:
        inset 0 0 0 2px rgba(37, 99, 235, 0.45),
        0 0 0 4px rgba(37, 99, 235, 0.12),
        0 18px 30px rgba(37, 99, 235, 0.18);
}

.slot-detail-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.94));
}

.slot-stat-grid,
.summary-grid,
.filters-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.slot-package-list {
    margin-top: 14px;
}

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

.field-span-full,
.field-span-2 {
    grid-column: 1 / -1;
}

.workflow-card,
.form-card,
.table-card,
.tab-card,
.alert-stack-card,
.scanner-card {
    display: grid;
    gap: 16px;
}

.form-grid,
.compact-form {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
}

.filters-grid,
.form-grid,
.compact-form,
.summary-grid,
.slot-stat-grid {
    width: 100%;
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.inline-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    border-radius: 16px;
    padding: 12px 14px;
    background: var(--surface-strong);
}

.summary-banner,
.validation-banner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 14px;
    flex-wrap: wrap;
}

.summary-banner.muted {
    background: rgba(248, 250, 252, 0.98);
}

.validation-banner.ok {
    border-color: rgba(34, 197, 94, 0.22);
    background: var(--success-soft);
}

.master-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(320px, 430px);
}

.search-field {
    min-width: 220px;
    flex: 1 1 240px;
}

.toolbar-row .btn {
    flex-shrink: 0;
}

.filters-grid {
    align-items: end;
}

.filters-grid .field-wrap,
.form-grid .field-wrap,
.compact-form .field-wrap {
    width: 100%;
}

.reports-toolbar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.reports-toolbar .btn {
    min-width: 132px;
}

.table-wrap {
    overflow: auto;
    border-radius: 20px;
    border: 1px solid rgba(148, 163, 184, 0.16);
    background: rgba(255, 255, 255, 0.82);
}

.table-wrap table {
    table-layout: fixed;
}

.table-card,
.form-card,
.workflow-card,
.scanner-card,
.alert-stack-card,
.slot-detail-card,
.auth-card,
.topbar,
.sidebar,
.rack-shell {
    box-shadow: 0 18px 44px rgba(15, 23, 42, 0.06), 0 6px 16px rgba(37, 99, 235, 0.05);
}

thead {
    background: linear-gradient(180deg, #f8fbff, #eef4ff);
}

th,
td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(148, 163, 184, 0.12);
    color: var(--text);
    vertical-align: top;
}

th {
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--muted);
}

tbody tr:hover {
    background: rgba(219, 234, 254, 0.42);
}

.status-pill {
    font-weight: 800;
    min-width: 58px;
}

.status-pill.success {
    color: #166534;
    background: var(--success-soft);
}

.status-pill.warning {
    color: #9a3412;
    background: var(--warning-soft);
}

.status-pill.neutral {
    color: #334155;
    background: var(--neutral-soft);
}

.sample-strip {
    display: grid;
    gap: 10px;
}

.sample-chip-row {
    overflow: auto;
    padding-bottom: 2px;
}

.sample-chip {
    background: var(--surface-strong);
    color: var(--primary-strong);
    flex: 0 0 auto;
}

.tab-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.96));
}

.tab-pill {
    color: var(--text);
}

.compact-summary {
    margin-bottom: 8px;
}

.toast-stack {
    position: fixed;
    right: 18px;
    bottom: 18px;
    display: grid;
    gap: 10px;
    width: min(360px, calc(100vw - 32px));
    z-index: 20;
}

.toast {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 18px;
    border: 1px solid rgba(148, 163, 184, 0.16);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-soft);
}

.toast strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text);
}

.toast button {
    background: transparent;
    color: var(--muted);
    font-size: 1.2rem;
    padding: 0;
}

.toast-success {
    border-color: rgba(34, 197, 94, 0.24);
}

.toast-warning {
    border-color: rgba(245, 158, 11, 0.24);
}

.toast-critical {
    border-color: rgba(244, 63, 94, 0.24);
}

.empty-card {
    border-radius: 18px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.96);
    color: var(--muted);
}

@media (max-width: 1440px) {
    .two-column-shell {
        grid-template-columns: 280px minmax(0, 1fr);
    }

    .dashboard-grid-lg {
        grid-template-columns: 1fr;
    }

    .dashboard-column.side {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px;
    }
}

@media (max-width: 1180px) {

    .two-column-shell,
    .login-panel,
    .master-grid,
    .rack-layout-grid,
    .workflow-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .headline-alerts,
    .metric-card-grid,
    .sidebar-metric-grid,
    .summary-grid,
    .slot-stat-grid,
    .filters-grid,
    .form-grid,
    .compact-form {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .toolbar-row {
        justify-content: stretch;
    }

    .reports-toolbar {
        justify-content: flex-start;
    }
}

@media (max-width: 920px) {
    .app-shell {
        padding: 18px;
    }

    .two-column-shell {
        gap: 18px;
    }

    .sidebar {
        gap: 14px;
    }

    .nav-stack {
        grid-auto-flow: column;
        grid-auto-columns: minmax(160px, 1fr);
        overflow: auto;
        padding-bottom: 2px;
    }

    .headline-alerts,
    .dashboard-column.side {
        grid-template-columns: 1fr;
    }

    .topbar,
    .sidebar,
    .metric-card,
    .table-card,
    .form-card,
    .workflow-card,
    .rack-shell,
    .insight-card,
    .alert-stack-card,
    .scanner-card,
    .slot-detail-card,
    .auth-card,
    .login-panel,
    .tab-card {
        padding: 20px;
    }

    .topbar-shell,
    .topbar-meta {
        justify-content: flex-start;
    }

    .page-title {
        max-width: none;
    }

    .warehouse-stage {
        min-width: 700px;
    }
}

@media (max-width: 720px) {

    .headline-alerts,
    .metric-card-grid,
    .sidebar-metric-grid,
    .summary-grid,
    .slot-stat-grid,
    .filters-grid,
    .form-grid,
    .compact-form,
    .dashboard-column.side {
        grid-template-columns: 1fr;
    }

    .section-head,
    .toolbar-row,
    .summary-banner,
    .validation-banner,
    .inline-meta,
    .brand-hero-mark,
    .brand-block,
    .sidebar-profile,
    .topbar-shell,
    .topbar-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .toolbar-row {
        width: 100%;
    }

    .reports-toolbar {
        width: 100%;
    }

    .search-field,
    .compact-field {
        width: 100%;
        min-width: 0;
    }

    .btn,
    .tab-pill {
        width: 100%;
    }

    .toast-stack {
        left: 12px;
        right: 12px;
        width: auto;
    }
}

@media (max-width: 560px) {

    .app-shell,
    .login-shell {
        padding: 12px;
    }

    .feature-pills,
    .hero-legend,
    .tab-row,
    .toggle-row,
    .sample-chip-row,
    .toolbar-row,
    .reports-toolbar,
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .topbar,
    .sidebar,
    .metric-card,
    .table-card,
    .form-card,
    .workflow-card,
    .rack-shell,
    .insight-card,
    .alert-stack-card,
    .scanner-card,
    .slot-detail-card,
    .auth-card,
    .login-panel,
    .tab-card {
        padding: 16px;
        border-radius: 20px;
    }

    .warehouse-viewport {
        padding: 12px;
    }

    .warehouse-stage {
        min-width: 620px;
    }

    .login-copy h1 {
        font-size: clamp(1.8rem, 8vw, 2.6rem);
    }
}