:root {
    color-scheme: light;
    --color-canvas: #f2f5f3;
    --color-surface: #ffffff;
    --color-surface-muted: #e8eeea;
    --color-text: #18211d;
    --color-text-muted: #5b6861;
    --color-border: #ccd6d0;
    --color-primary: #146c43;
    --color-primary-strong: #0d5333;
    --color-warning: #a85f0b;
    --color-warning-bg: #fff4dd;
    --color-header: #202824;
    --shadow-panel: 0 1px 2px rgba(24, 33, 29, 0.08);
    --radius: 6px;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.5;
}

* {
    box-sizing: border-box;
}

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

body {
    height: 100vh;
    height: 100dvh;
    min-width: 320px;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    overflow: hidden;
    background: var(--color-canvas);
    color: var(--color-text);
}

button,
input {
    font: inherit;
}

a {
    color: inherit;
}

.app-header {
    min-height: 68px;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
    padding: 10px 24px;
    background: var(--color-header);
    color: #ffffff;
}

.brand {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand-mark {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    display: grid;
    place-items: center;
    border: 1px solid #607068;
    border-radius: var(--radius);
    background: #ffffff;
    color: var(--color-primary-strong);
    font-size: 0.82rem;
    font-weight: 800;
}

.brand strong,
.brand small {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.brand strong {
    font-size: 1rem;
}

.brand small {
    color: #b9c5bf;
    font-size: 0.75rem;
}

.primary-nav {
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.nav-link {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    padding: 7px 12px;
    border-radius: 4px;
    color: #dce5e0;
    font-size: 0.88rem;
    font-weight: 650;
    text-decoration: none;
    white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
    background: #344039;
}

.nav-link.is-active {
    background: #ffffff;
    color: var(--color-text);
}

.database-status {
    justify-self: end;
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #f2d29f;
    font-size: 0.78rem;
    font-weight: 650;
    text-align: right;
}

.status-dot {
    width: 8px;
    height: 8px;
    flex: 0 0 8px;
    border-radius: 50%;
    background: #e7a43e;
}

.app-main {
    min-height: 0;
    overflow: auto;
    overscroll-behavior: contain;
}

.app-footer {
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 8px 24px;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.footer-location,
.footer-credit {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-location time,
.footer-credit {
    white-space: nowrap;
}

.malaysia-logo {
    width: 26px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #315383;
    border-left: 5px solid #c7393a;
    border-radius: 3px;
    background: #ffffff;
    color: #183352;
    font-size: 0.58rem;
    font-weight: 800;
    line-height: 1;
}

.pos-workspace {
    min-height: 100%;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 390px);
}

.catalogue-panel {
    min-width: 0;
    padding: 26px;
}

.workspace-heading,
.cart-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.workspace-heading h1,
.cart-heading h2,
.catalogue-empty h2,
.cart-empty h3,
.introduction h1 {
    margin: 0;
    letter-spacing: 0;
}

.workspace-heading h1 {
    font-size: 1.65rem;
}

.cart-heading h2,
.catalogue-empty h2 {
    font-size: 1.2rem;
}

.cart-empty h3 {
    font-size: 1rem;
}

.context-label,
.boundary-label {
    margin: 0 0 3px;
    color: var(--color-text-muted);
    font-size: 0.72rem;
    font-weight: 750;
    letter-spacing: 0;
    text-transform: uppercase;
}

.phase-badge,
.item-count {
    flex: 0 0 auto;
    padding: 4px 8px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-surface);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 700;
}

.catalogue-toolbar {
    display: grid;
    grid-template-columns: minmax(240px, 520px) auto;
    gap: 12px;
    margin-top: 22px;
}

.search-field {
    display: grid;
    gap: 5px;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 700;
}

.search-field input {
    width: 100%;
    min-height: 44px;
    padding: 9px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text-muted);
}

.category-control {
    align-self: end;
}

.category-button {
    min-height: 44px;
    padding: 9px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text-muted);
    font-weight: 700;
}

.category-button.is-selected {
    border-color: #8fa79a;
    background: var(--color-surface-muted);
}

.catalogue-empty {
    min-height: 360px;
    display: grid;
    align-content: center;
    justify-items: center;
    margin-top: 18px;
    padding: 32px;
    border: 1px dashed #aebbb4;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.55);
    text-align: center;
}

.empty-symbol {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    margin-bottom: 12px;
    border-radius: 50%;
    background: var(--color-surface-muted);
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: 500;
}

.catalogue-empty p,
.cart-empty p,
.checkout-status,
.notice p {
    margin: 6px 0 0;
    color: var(--color-text-muted);
}

.catalogue-empty p {
    max-width: 410px;
}

.cart-panel {
    min-width: 0;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    padding: 22px;
    border-left: 1px solid var(--color-border);
    background: var(--color-surface);
    box-shadow: var(--shadow-panel);
}

.cart-empty {
    display: grid;
    flex: 1;
    align-content: center;
    justify-items: center;
    padding: 30px 12px;
    text-align: center;
}

.cart-empty p {
    max-width: 290px;
    font-size: 0.86rem;
}

.cart-summary {
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.summary-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 9px;
    color: var(--color-text-muted);
}

.summary-total {
    margin: 13px 0 16px;
    padding-top: 13px;
    border-top: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 1.15rem;
}

.checkout-button,
.button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-weight: 750;
    text-decoration: none;
}

.checkout-button {
    width: 100%;
    background: #aeb9b3;
    color: #ffffff;
    cursor: not-allowed;
}

.checkout-status {
    font-size: 0.75rem;
    text-align: center;
}

.introduction {
    width: min(1040px, calc(100% - 40px));
    margin: 0 auto;
    padding: 54px 0;
}

.introduction-heading {
    max-width: 720px;
}

.introduction h1 {
    font-size: 2.4rem;
}

.introduction-summary {
    max-width: 630px;
    margin: 12px 0 0;
    color: var(--color-text-muted);
    font-size: 1.08rem;
}

.introduction-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.button-primary {
    background: var(--color-primary);
    color: #ffffff;
}

.button-primary:hover,
.button-primary:focus-visible {
    background: var(--color-primary-strong);
}

.button-secondary {
    border-color: var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
}

.delivery-boundary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin-top: 48px;
    border-block: 1px solid var(--color-border);
}

.delivery-boundary > div {
    min-width: 0;
    padding: 18px 20px;
}

.delivery-boundary > div + div {
    border-left: 1px solid var(--color-border);
}

.delivery-boundary strong {
    display: block;
    overflow-wrap: anywhere;
    font-size: 0.95rem;
}

.system-flow {
    margin-top: 56px;
}

.diagram-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
}

.diagram-heading h2,
.diagram-subheading h3,
.flow-step h3 {
    margin: 0;
    letter-spacing: 0;
}

.diagram-heading h2 {
    font-size: 1.65rem;
}

.diagram-heading p:not(.context-label) {
    max-width: 660px;
    margin: 7px 0 0;
    color: var(--color-text-muted);
}

.diagram-legend {
    flex: 0 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 12px;
    color: var(--color-text-muted);
    font-size: 0.76rem;
    font-weight: 700;
}

.diagram-legend > span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.legend-marker {
    width: 9px;
    height: 9px;
    border-radius: 50%;
}

.marker-current {
    background: var(--color-primary);
}

.marker-planned {
    border: 2px solid #8d9a93;
    background: var(--color-surface);
}

.business-flow,
.architecture-flow {
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.business-flow {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 22px;
}

.flow-step {
    position: relative;
    min-width: 0;
    min-height: 228px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    box-shadow: var(--shadow-panel);
}

.flow-step:not(:last-child)::after,
.architecture-node:not(:last-child)::after {
    content: "\2192";
    position: absolute;
    top: 50%;
    right: -18px;
    z-index: 1;
    color: #78857e;
    font-size: 1.1rem;
    line-height: 1;
    transform: translateY(-50%);
}

.flow-step-current {
    border-top: 4px solid var(--color-primary);
    padding-top: 13px;
}

.flow-step-planned {
    border-top: 4px solid #9ba69f;
    padding-top: 13px;
}

.flow-step-heading {
    min-height: 42px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.flow-number {
    color: var(--color-primary-strong);
    font-size: 1.25rem;
    font-weight: 800;
}

.flow-status,
.architecture-status {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 3px 6px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-surface-muted);
    color: var(--color-text-muted);
    font-size: 0.66rem;
    font-weight: 750;
    line-height: 1.2;
    text-align: center;
}

.flow-step h3 {
    font-size: 0.98rem;
}

.flow-step p {
    margin: 8px 0 0;
    color: var(--color-text-muted);
    font-size: 0.82rem;
}

.relationship-diagram,
.architecture-diagram {
    margin-top: 42px;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
}

.diagram-subheading h3 {
    font-size: 1.15rem;
}

.relationship-rows {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.relationship-row {
    min-width: 0;
    display: grid;
    grid-template-columns: minmax(120px, 1fr) minmax(80px, 0.7fr) minmax(120px, 1fr) minmax(80px, 0.7fr) minmax(120px, 1fr);
    align-items: center;
    gap: 10px;
}

.entity-name {
    min-width: 0;
    padding: 10px 12px;
    border: 1px solid #9eaca4;
    border-radius: var(--radius);
    background: var(--color-surface);
    font-size: 0.82rem;
    font-weight: 750;
    text-align: center;
    overflow-wrap: anywhere;
}

.relationship-label {
    position: relative;
    color: var(--color-text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    text-align: center;
}

.relationship-label::before,
.relationship-label::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 18%;
    border-top: 1px solid #9eaca4;
}

.relationship-label::before {
    left: 0;
}

.relationship-label::after {
    right: 0;
}

.architecture-flow {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 22px;
}

.architecture-node {
    position: relative;
    min-width: 0;
    min-height: 190px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 15px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
}

.architecture-node-current {
    border-bottom: 4px solid var(--color-primary);
}

.architecture-node-planned {
    border-bottom: 4px solid #9ba69f;
}

.architecture-node strong {
    margin-top: 18px;
    font-size: 0.92rem;
}

.architecture-node > span:last-child {
    margin-top: 7px;
    color: var(--color-text-muted);
    font-size: 0.78rem;
}

.architecture-node code,
.podman-boundary code {
    font-size: 0.76rem;
    overflow-wrap: anywhere;
}

.podman-boundary {
    display: grid;
    grid-template-columns: minmax(180px, 0.35fr) minmax(0, 1fr);
    gap: 30px;
    margin-top: 20px;
    padding: 18px 20px;
    border-left: 4px solid #65756c;
    background: var(--color-surface-muted);
}

.podman-boundary strong {
    display: block;
    font-size: 0.94rem;
}

.podman-boundary p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.82rem;
}

.notice {
    margin-top: 28px;
    padding: 16px 18px;
    border-left: 4px solid var(--color-warning);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.notice-warning {
    background: var(--color-warning-bg);
}

.notice p {
    color: #62441f;
}

:focus-visible {
    outline: 3px solid #5aa57f;
    outline-offset: 2px;
}

@media (max-width: 1200px) {
    .app-header {
        grid-template-columns: 1fr auto;
        gap: 10px 18px;
    }

    .primary-nav {
        grid-column: 1 / -1;
        grid-row: 2;
        order: 3;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 2px;
    }

    .database-status {
        grid-column: 2;
        grid-row: 1;
    }

    .nav-link {
        flex: 0 0 auto;
    }
}

@media (max-width: 900px) {
    .pos-workspace {
        grid-template-columns: 1fr;
    }

    .cart-panel {
        min-height: 520px;
        border-top: 1px solid var(--color-border);
        border-left: 0;
    }

    .business-flow,
    .architecture-flow {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .flow-step,
    .architecture-node {
        min-height: 0;
    }

    .flow-step:not(:last-child)::after,
    .architecture-node:not(:last-child)::after {
        top: auto;
        right: 50%;
        bottom: -23px;
        transform: translateX(50%) rotate(90deg);
    }
}

@media (max-width: 620px) {
    .app-header {
        padding: 10px 14px;
    }

    .database-status {
        max-width: 142px;
    }

    .catalogue-panel,
    .cart-panel {
        padding: 18px 14px;
    }

    .catalogue-toolbar,
    .delivery-boundary {
        grid-template-columns: 1fr;
    }

    .delivery-boundary > div {
        padding-inline: 0;
    }

    .delivery-boundary > div + div {
        border-top: 1px solid var(--color-border);
        border-left: 0;
    }

    .introduction {
        width: min(100% - 28px, 1040px);
        padding: 36px 0;
    }

    .introduction h1 {
        font-size: 2rem;
    }

    .introduction-actions,
    .button {
        width: 100%;
    }

    .diagram-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 14px;
    }

    .diagram-legend {
        justify-content: flex-start;
    }

    .relationship-row,
    .podman-boundary {
        grid-template-columns: 1fr;
    }

    .relationship-row {
        gap: 5px;
    }

    .relationship-label {
        padding: 5px 0;
    }

    .relationship-label::before,
    .relationship-label::after {
        display: none;
    }

    .podman-boundary {
        gap: 12px;
        padding-inline: 16px;
    }

    .app-footer {
        align-items: flex-start;
        flex-direction: column;
        padding-inline: 14px;
    }

    .footer-location {
        flex-wrap: wrap;
    }
}