:root {
    --fs-small: 0.75rem;
    --fs-body: 1rem;
    --fs-heading: 1.5rem;

    --space-xs: 0.35rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;

    --sidebar-width: 13rem;

    --radius-sm: 0.35rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-pill: 999px;

    --colour-background: #f3f5f7;
    --colour-card: #fff;
    --colour-text: #1f2933;
    --colour-muted: #52606d;
    --colour-border: #a0aec0;
    --colour-border-light: #d9e2ec;
    --colour-sidebar: #1f2933;
    --colour-primary: #0058a3;
    --colour-primary-light: #d9eefa;
    --colour-danger: #b42318;
    --colour-white: #fff;
    --colour-black: #000;

    --locker-empty: #7bd389;
    --locker-in-use: rgb(229, 227, 228);
    --locker-due: rgb(103, 49, 125);
    --locker-overdue: rgb(235, 30, 34);
    --locker-not-used: repeating-linear-gradient(45deg,
            #606dbc,
            #606dbc 10px,
            #465298 10px,
            #465298 20px);

    --shadow-card: 0 0.2rem 0.8rem rgb(31 41 51 / 8%);
    --shadow-login: 0 0.5rem 2rem rgb(31 41 51 / 15%);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    min-height: 100vh;
}

body {
    margin: 0;
    background: var(--colour-background);
    color: var(--colour-text);
    font-family: Arial, sans-serif;
    font-size: var(--fs-body);
}

button,
input,
select {
    font: inherit;
}

.login-page {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: var(--space);
}

.login-card {
    width: min(100%, 24rem);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    background: var(--colour-card);
    box-shadow: var(--shadow-login);
}

.login-card h1 {
    margin-top: 0;
}

#login-form {
    display: grid;
    gap: var(--space-md);
}

#login-form input,
#store-selector {
    border: 1px solid var(--colour-border);
    border-radius: var(--radius-sm);
    background: var(--colour-card);
}

#login-form input {
    width: 100%;
    padding: 0.65rem;
}

#login-form button,
.nav-button {
    padding: 0.7rem 0.9rem;
    border: 0;
    border-radius: var(--radius-sm);
}

#login-form button {
    cursor: pointer;
    background: var(--colour-primary);
    color: var(--colour-white);
}

.form-error {
    color: var(--colour-danger);
}

.app-page {
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    display: flex;
    width: var(--sidebar-width);
    padding: var(--space-lg) var(--space-lg) var(--space);
    flex-direction: column;
    background: var(--colour-sidebar);
    color: var(--colour-white);
}

.sidebar h1 {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
    margin: 0 0 var(--space-lg);
    font-size: var(--fs-heading);
}

.navigation {
    display: grid;
    gap: var(--space-sm);
}

.nav-button {
    width: 100%;
    cursor: pointer;
    background: transparent;
    color: var(--colour-white);
    text-align: left;
}

.nav-button.active {
    background: var(--colour-primary);
}

.nav-button:disabled {
    cursor: not-allowed;
    color: #9aa5b1;
}

.sidebar-footer {
    display: grid;
    gap: var(--space-xs);
    margin-top: auto;
}

.logout-link {
    color: var(--colour-white);
    text-decoration: none;
}

.app-version {
    color: #9aa5b1;
    font-size: var(--fs-small);
    font-weight: normal;
}

.content {
    margin-left: var(--sidebar-width);
    padding: var(--space-xl);
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space);
    margin-bottom: var(--space-xl);
}

.page-header h2 {
    margin: 0;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

#store-selector {
    width: fit-content;
    min-width: 0;
    padding: 0.45rem 0.6rem;
}

.signed-in-as {
    color: var(--colour-muted);
    white-space: nowrap;
}

.role-badge {
    padding: 0.35rem 0.6rem;
    border-radius: var(--radius-pill);
    background: var(--colour-primary-light);
    color: var(--colour-primary);
    text-transform: capitalize;
}

.machine,
.orders-section,
.empty-state {
    border-radius: var(--radius-lg);
    background: var(--colour-card);
}

.machine,
.orders-section {
    padding: var(--space);
    box-shadow: var(--shadow-card);
}

.machine {
    margin-bottom: var(--space-lg);
}

.machine h3,
.orders-section h3 {
    margin-top: 0;
}

.locker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(7rem, 1fr));
    gap: var(--space-md);
}

.locker-cell {
    display: grid;
    min-height: 6.5rem;
    padding: var(--space-md);
    align-content: space-between;
    border-radius: var(--radius);
}

.locker-cell--empty {
    background: var(--locker-empty);
}

.locker-cell--in_use {
    background: var(--locker-in-use);
}

.locker-cell--due {
    background: var(--locker-due);
    color: var(--colour-white);
}

.locker-cell--overdue {
    background: var(--locker-overdue);
    color: var(--colour-white);
}

.locker-cell--not_used {
    background: var(--locker-not-used);
    color: var(--colour-white);
}

.locker-cell--cancelled {
    background: var(--colour-black);
    color: var(--colour-white);
}

.locker-order {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.locker-cell small {
    font-size: var(--fs-small);
}

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space);
    color: var(--colour-muted);
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.legend-swatch {
    width: 1rem;
    height: 1rem;
    border-radius: 0.2rem;
}

.legend-swatch--empty {
    background: var(--locker-empty);
}

.legend-swatch--in_use {
    background: var(--locker-in-use);
}

.legend-swatch--due {
    background: var(--locker-due);
}

.legend-swatch--overdue {
    background: var(--locker-overdue);
}

.legend-swatch--not_used {
    background: var(--locker-not-used);
}

.legend-swatch--cancelled {
    background: var(--colour-black);
}

.empty-state {
    padding: var(--space);
}

.orders-section {
    margin-top: var(--space-lg);
    overflow-x: auto;
}

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

.orders-table th,
.orders-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--colour-border-light);
    text-align: left;
}

.orders-table th {
    background: #f0f4f8;
    color: #334e68;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
    white-space: nowrap;
}

.status-badge--planned,
.status-badge--in_locker,
.status-badge--in_use {
    background: var(--colour-border-light);
    color: #334e68;
}

.status-badge--ready_for_pickup {
    background: #c6f6d5;
    color: #0c6b3c;
}

.status-badge--picked_up,
.status-badge--removed_by_coworker {
    background: #486581;
    color: var(--colour-white);
}

.status-badge--due {
    background: var(--locker-due);
    color: var(--colour-white);
}

.status-badge--overdue {
    background: var(--locker-overdue);
    color: var(--colour-white);
}

.status-badge--cancelled {
    background: var(--colour-black);
    color: var(--colour-white);
}

.menu-toggle {
    display: none;
}

@media (max-width: 48rem) {
    .sidebar {
        position: static;
        display: flex;
        width: 100%;
        min-height: 0;
        padding: var(--space);
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
    }

    .sidebar h1 {
        margin: 0;
    }

    .menu-toggle {
        display: inline-grid;
        width: 2.5rem;
        height: 2.5rem;
        margin-left: auto;
        place-items: center;
        border: 0;
        border-radius: var(--radius-sm);
        background: transparent;
        color: var(--colour-white);
        cursor: pointer;
        font-size: 1.5rem;
    }

    .menu-toggle:hover,
    .menu-toggle:focus-visible {
        background: var(--colour-primary);
    }

    .navigation,
    .sidebar-footer {
        display: none;
    }

    .sidebar.menu-open .navigation {
        display: grid;
        width: 100%;
        margin-top: var(--space);
        flex-basis: 100%;
    }

    .sidebar.menu-open .sidebar-footer {
        display: grid;
        width: 100%;
        margin-top: var(--space);
        flex-basis: 100%;
    }

    .content {
        margin-left: 0;
        padding: var(--space);
    }

    .page-header,
    .page-actions {
        align-items: flex-start;
        flex-wrap: wrap;
    }
}