/* Import Font Awesome, Bootstrap and the Inter typeface */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css');
@import url('https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ============================================================
   Design tokens
   ============================================================ */
:root {
    /* Brand */
    --pa-primary: #2563eb;
    --pa-primary-strong: #1d4ed8;
    --pa-primary-soft: #eff4ff;
    --pa-accent: #38bdf8;
    --pa-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);

    /* Neutrals */
    --pa-bg: #f2f5fa;
    --pa-surface: #ffffff;
    --pa-surface-2: #f8fafd;
    --pa-border: #e4e9f2;
    --pa-border-strong: #d3dbe8;
    --pa-text: #1a2537;
    --pa-text-2: #5b6b83;
    --pa-text-3: #8a97ab;

    /* Sidebar */
    --pa-side-bg-1: #0e1a2b;
    --pa-side-bg-2: #0a1422;
    --pa-side-text: #b9c6d8;

    /* Shape & depth */
    --pa-radius-sm: 0.5rem;
    --pa-radius: 0.75rem;
    --pa-radius-lg: 1rem;
    --pa-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
    --pa-shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 8px 24px rgba(16, 24, 40, 0.06);
    --pa-shadow-lg: 0 12px 32px rgba(16, 24, 40, 0.12), 0 2px 6px rgba(16, 24, 40, 0.06);

    /* Status */
    --pa-success: #16a34a;
    --pa-warning: #d97706;
    --pa-danger: #dc2626;
    --pa-info: #0891b2;

    /* Map onto Bootstrap */
    --bs-body-bg: var(--pa-bg);
    --bs-body-color: var(--pa-text);
    --bs-border-color: var(--pa-border);
    --bs-primary: var(--pa-primary);
    --bs-primary-rgb: 37, 99, 235;
    --bs-link-color: var(--pa-primary);
    --bs-link-color-rgb: 37, 99, 235;
    --bs-link-hover-color: var(--pa-primary-strong);
    --bs-link-hover-color-rgb: 29, 78, 216;
    --bs-secondary-color: var(--pa-text-2);
    --bs-body-font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* ============================================================
   Base
   ============================================================ */
html, body {
    font-family: var(--bs-body-font-family);
    margin: 0;
    padding: 0;
    background: var(--pa-bg);
    color: var(--pa-text);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--pa-text);
}

h1:focus {
    outline: none;
}

::selection {
    background: rgba(37, 99, 235, 0.18);
}

/* Slim, unobtrusive scrollbars */
* {
    scrollbar-width: thin;
    scrollbar-color: #c3cddd transparent;
}

*::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

*::-webkit-scrollbar-thumb {
    background: #c3cddd;
    border-radius: 999px;
}

*::-webkit-scrollbar-track {
    background: transparent;
}

/* Subtle entrance for page content */
@keyframes pa-fade-up {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: no-preference) {
    .content-area > * {
        /* "backwards", not "both": a forwards fill retains the final keyframe's
           transform, and an element with any transform becomes the containing
           block for position:fixed descendants — which trapped every modal
           inside the page content instead of covering the viewport. */
        animation: pa-fade-up 0.3s ease-out backwards;
    }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    --bs-btn-border-radius: var(--pa-radius-sm);
    --bs-btn-font-weight: 600;
    --bs-btn-padding-x: 1rem;
    transition: transform 0.15s ease, box-shadow 0.15s ease,
                background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:not(.btn-link):hover {
    transform: translateY(-1px);
}

.btn:not(.btn-link):active {
    transform: translateY(0);
}

.btn-primary {
    --bs-btn-bg: var(--pa-primary);
    --bs-btn-border-color: var(--pa-primary);
    --bs-btn-hover-bg: var(--pa-primary-strong);
    --bs-btn-hover-border-color: var(--pa-primary-strong);
    --bs-btn-active-bg: var(--pa-primary-strong);
    --bs-btn-active-border-color: var(--pa-primary-strong);
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.32);
}

.btn-success {
    --bs-btn-bg: var(--pa-success);
    --bs-btn-border-color: var(--pa-success);
    --bs-btn-hover-bg: #15803d;
    --bs-btn-hover-border-color: #15803d;
    --bs-btn-active-bg: #15803d;
    --bs-btn-active-border-color: #15803d;
}

.btn-danger {
    --bs-btn-bg: var(--pa-danger);
    --bs-btn-border-color: var(--pa-danger);
    --bs-btn-hover-bg: #b91c1c;
    --bs-btn-hover-border-color: #b91c1c;
}

.btn-secondary {
    --bs-btn-bg: #64748b;
    --bs-btn-border-color: #64748b;
    --bs-btn-hover-bg: #475569;
    --bs-btn-hover-border-color: #475569;
}

.btn-outline-secondary {
    --bs-btn-color: var(--pa-text-2);
    --bs-btn-border-color: var(--pa-border-strong);
    --bs-btn-hover-bg: var(--pa-surface-2);
    --bs-btn-hover-border-color: var(--pa-border-strong);
    --bs-btn-hover-color: var(--pa-text);
    --bs-btn-active-bg: var(--pa-surface-2);
    --bs-btn-active-border-color: var(--pa-border-strong);
    --bs-btn-active-color: var(--pa-text);
}

.btn-outline-danger {
    --bs-btn-color: var(--pa-danger);
    --bs-btn-border-color: #f3b4b4;
    --bs-btn-hover-bg: var(--pa-danger);
    --bs-btn-hover-border-color: var(--pa-danger);
}

.btn-light {
    --bs-btn-border-radius: var(--pa-radius-sm);
}

/* ============================================================
   Forms
   ============================================================ */
.form-control,
.form-select {
    border-radius: var(--pa-radius-sm);
    border-color: var(--pa-border-strong);
    padding: 0.5rem 0.85rem;
    color: var(--pa-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control::placeholder {
    color: var(--pa-text-3);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--pa-primary);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.14);
}

.form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--pa-text-2);
    margin-bottom: 0.35rem;
}

.input-group-text {
    background: var(--pa-surface-2);
    border-color: var(--pa-border-strong);
    color: var(--pa-text-3);
    border-radius: var(--pa-radius-sm);
}

.form-check-input:checked {
    background-color: var(--pa-primary);
    border-color: var(--pa-primary);
}

.form-check-input:focus {
    border-color: var(--pa-primary);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.14);
}

/* Form Validation */
.valid.modified:not([type=checkbox]) {
    outline: none;
    border-color: #22c55e;
    box-shadow: 0 0 0 0.15rem rgba(34, 197, 94, 0.15);
}

.invalid {
    outline: none;
    border-color: var(--pa-danger);
    box-shadow: 0 0 0 0.15rem rgba(220, 38, 38, 0.12);
}

.validation-message {
    color: var(--pa-danger);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* ============================================================
   Cards
   ============================================================ */
.card {
    --bs-card-border-color: var(--pa-border);
    --bs-card-border-radius: var(--pa-radius-lg);
    --bs-card-inner-border-radius: calc(var(--pa-radius-lg) - 1px);
    --bs-card-cap-bg: var(--pa-surface-2);
    box-shadow: var(--pa-shadow-sm);
    background: var(--pa-surface);
}

.card-header {
    font-weight: 600;
    border-bottom-color: var(--pa-border);
}

/* ============================================================
   Tables
   ============================================================ */
.table {
    --bs-table-border-color: var(--pa-border);
    margin-bottom: 0;
}

.table > thead th {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--pa-text-2);
    background: var(--pa-surface-2);
    border-bottom: 1px solid var(--pa-border-strong);
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
    vertical-align: middle;
}

.table > tbody td {
    vertical-align: middle;
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
}

.table-bordered > :not(caption) > * > * {
    border-color: var(--pa-border);
}

.table-hover tbody tr {
    transition: background-color 0.12s ease;
}

.table-hover tbody tr:hover {
    background-color: rgba(37, 99, 235, 0.05);
}

.table-responsive {
    border-radius: var(--pa-radius);
}

/* ============================================================
   Tabs
   ============================================================ */
.nav-tabs {
    --bs-nav-tabs-border-width: 0;
    --bs-nav-tabs-link-active-bg: transparent;
    gap: 0.25rem;
    border-bottom: 1px solid var(--pa-border);
}

.nav-tabs .nav-link {
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: var(--pa-radius-sm) var(--pa-radius-sm) 0 0;
    color: var(--pa-text-2);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.6rem 0.9rem;
    margin-bottom: -1px;
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.nav-tabs .nav-link:hover {
    color: var(--pa-primary);
    background: var(--pa-primary-soft);
    border-bottom-color: transparent;
}

.nav-tabs .nav-link.active {
    color: var(--pa-primary);
    background: transparent;
    border-bottom: 2px solid var(--pa-primary);
}

.nav-tabs .nav-link i {
    margin-right: 0.3rem;
    opacity: 0.85;
}

/* ============================================================
   Badges, alerts, dropdowns, modals
   ============================================================ */
.badge {
    font-weight: 600;
    letter-spacing: 0.01em;
    border-radius: 999px;
    padding: 0.35em 0.7em;
}

.alert {
    border: none;
    border-radius: var(--pa-radius);
    box-shadow: var(--pa-shadow-sm);
}

.alert-danger {
    background: #fdecec;
    color: #a11a1a;
}

.alert-warning {
    background: #fdf3e0;
    color: #92580a;
}

.alert-info {
    background: #e5f5fb;
    color: #0b5e75;
}

.alert-success {
    background: #e6f7ec;
    color: #146a34;
}

.dropdown-menu {
    --bs-dropdown-border-radius: var(--pa-radius);
    --bs-dropdown-border-color: var(--pa-border);
    --bs-dropdown-padding-y: 0.4rem;
    --bs-dropdown-padding-x: 0.4rem;
    --bs-dropdown-item-border-radius: var(--pa-radius-sm);
    --bs-dropdown-link-hover-bg: var(--pa-primary-soft);
    --bs-dropdown-link-hover-color: var(--pa-primary-strong);
    --bs-dropdown-link-active-bg: var(--pa-primary);
    box-shadow: var(--pa-shadow-lg);
}

.dropdown-item {
    border-radius: var(--pa-radius-sm);
    font-size: 0.92rem;
    padding: 0.45rem 0.65rem;
}

.modal-content {
    border: none;
    border-radius: var(--pa-radius-lg);
    box-shadow: var(--pa-shadow-lg);
    overflow: hidden;
}

.modal-header {
    background: var(--pa-surface-2);
    border-bottom: 1px solid var(--pa-border);
    padding: 1rem 1.5rem;
}

.modal-title {
    font-weight: 700;
    font-size: 1.05rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--pa-border);
    padding: 0.85rem 1.5rem;
}

.modal.show {
    animation: pa-fade-up 0.2s ease-out;
}

/* Full-screen modals meet the screen edges, so the rounded corners and the
   body's centred padding both have to go. The body scrolls; the header and
   footer stay put, which is what keeps Save reachable. */
.modal-fullscreen .modal-content {
    height: 100%;
    border-radius: 0;
}

.modal-fullscreen .modal-body {
    overflow-y: auto;
}

.modal-backdrop {
    background-color: rgba(10, 20, 34, 0.55);
}

/* Blazor renders its own backdrop via inline style on .modal */
.modal.fade.show.d-block {
    background-color: rgba(10, 20, 34, 0.55) !important;
    backdrop-filter: blur(2px);
}

/* ============================================================
   Blazor error surfaces
   ============================================================ */
.blazor-error-boundary {
    background: #b32121;
    border-radius: var(--pa-radius);
    padding: 1rem 1.25rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred.";
}

#blazor-error-ui {
    color-scheme: light only;
    background: #fff7d6;
    border-top: 1px solid #eadfa2;
    bottom: 0;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 2.8rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 3000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

/* ============================================================
   Stat cards (dashboard)
   ============================================================ */
.stat-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1.1rem;
    background: var(--pa-surface);
    border: 1px solid var(--pa-border);
    border-radius: var(--pa-radius-lg);
    padding: 1.35rem 1.5rem;
    box-shadow: var(--pa-shadow-sm);
    text-align: left;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.stat-card::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    background: var(--pa-gradient);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--pa-shadow);
    border-color: rgba(37, 99, 235, 0.35);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card .stat-icon {
    flex-shrink: 0;
    width: 3.25rem;
    height: 3.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--pa-radius);
    background: var(--pa-primary-soft);
    color: var(--pa-primary);
    font-size: 1.3rem;
}

.stat-card .stat-body {
    min-width: 0;
}

.stat-card .value {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--pa-text);
}

.stat-card .label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--pa-text-2);
    margin-top: 0.35rem;
}

.stat-card .sub-label {
    font-size: 0.78rem;
    color: var(--pa-text-3);
    margin-top: 0.1rem;
}

/* ============================================================
   Dashboard panels & service-call banner
   ============================================================ */
.panel {
    background: var(--pa-surface);
    border: 1px solid var(--pa-border);
    border-radius: var(--pa-radius-lg);
    box-shadow: var(--pa-shadow-sm);
    padding: 1.25rem 1.5rem;
}

.panel-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--pa-text-2);
    margin-bottom: 0.75rem;
}

.section-heading {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-heading i {
    color: var(--pa-primary);
}

.alert-service-call {
    background: linear-gradient(135deg, #1e40af 0%, #2563eb 55%, #3b82f6 100%);
    color: #fff;
    border: none;
    border-radius: var(--pa-radius-lg);
    padding: 1.5rem 1.75rem;
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.32);
}

.alert-service-call .btn {
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #fff;
    backdrop-filter: blur(4px);
}

.alert-service-call .btn:hover {
    background: rgba(255, 255, 255, 0.28);
}

/* ============================================================
   Loading spinner
   ============================================================ */
.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    color: var(--pa-text-2);
}

.spinner {
    width: 38px;
    height: 38px;
    border: 3px solid rgba(37, 99, 235, 0.15);
    border-top-color: var(--pa-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ============================================================
   Search box & custom select
   ============================================================ */
.search-box {
    position: relative;
}

.search-box input {
    padding-left: 2.5rem;
}

.search-box .search-icon {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--pa-text-3);
    pointer-events: none;
}

.custom-select-container {
    position: relative;
}

.custom-select-dropdown {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    right: 0;
    background: var(--pa-surface);
    border: 1px solid var(--pa-border);
    border-radius: var(--pa-radius);
    box-shadow: var(--pa-shadow-lg);
    max-height: 320px;
    overflow-y: auto;
    z-index: 1000;
    padding: 0.35rem;
    animation: pa-fade-up 0.15s ease-out;
}

.custom-select-item {
    padding: 0.6rem 0.75rem;
    cursor: pointer;
    border-radius: var(--pa-radius-sm);
    transition: background-color 0.12s ease;
}

.custom-select-item:hover {
    background: var(--pa-primary-soft);
}

/* ============================================================
   Auth screens (login, lock)
   ============================================================ */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse 80% 60% at 15% 0%, rgba(59, 130, 246, 0.22) 0%, transparent 60%),
        radial-gradient(ellipse 70% 55% at 90% 100%, rgba(56, 189, 248, 0.14) 0%, transparent 60%),
        linear-gradient(160deg, #0e1a2b 0%, #0a1422 100%);
    padding: 1rem;
}

.login-card {
    background: #fff;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 1.25rem;
    box-shadow: 0 24px 70px rgba(3, 9, 18, 0.55);
    padding: 2.75rem 2.5rem;
    width: 100%;
    max-width: 430px;
    animation: login-in 0.45s cubic-bezier(0.21, 1.02, 0.73, 1) both;
}

@keyframes login-in {
    from { opacity: 0; transform: translateY(14px) scale(0.985); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    width: 76px;
    height: 76px;
    margin-bottom: 1rem;
    border-radius: 1rem;
    box-shadow: 0 8px 22px rgba(37, 99, 235, 0.25);
}

.login-header h2 {
    color: var(--pa-text);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.login-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #edf1f7;
}

/* ============================================================
   Toast notifications
   ============================================================ */
.toast-host {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    z-index: 1080;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    max-width: 22rem;
}

.toast-item {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 0.8rem 1rem;
    border-radius: var(--pa-radius);
    color: #fff;
    box-shadow: var(--pa-shadow-lg);
    animation: toast-in 0.25s cubic-bezier(0.21, 1.02, 0.73, 1);
}

.toast-item i {
    margin-top: 0.15rem;
}

.toast-text {
    flex: 1;
    word-break: break-word;
    font-size: 0.92rem;
}

.toast-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.1rem;
    line-height: 1;
    opacity: 0.8;
    cursor: pointer;
}

.toast-close:hover {
    opacity: 1;
}

.toast-success { background: linear-gradient(135deg, #16a34a, #15803d); }
.toast-info    { background: linear-gradient(135deg, #2563eb, #1d4ed8); }
.toast-warning { background: linear-gradient(135deg, #d97706, #b45309); }
.toast-error   { background: linear-gradient(135deg, #dc2626, #b91c1c); }

@keyframes toast-in {
    from { transform: translateY(0.75rem) scale(0.98); opacity: 0; }
    to   { transform: translateY(0) scale(1); opacity: 1; }
}

/* ============================================================
   Client detail contract tint
   Subtle replacement for the old app's full green/red page
   background indicating on/off contract.
   ============================================================ */
.client-detail.client-contract-ok {
    border-left: 4px solid var(--pa-success);
    background: linear-gradient(90deg, rgba(22, 163, 74, 0.06), transparent 40%);
    border-radius: var(--pa-radius-sm);
    padding-left: 1rem;
}

.client-detail.client-contract-off {
    border-left: 4px solid var(--pa-danger);
    background: linear-gradient(90deg, rgba(220, 38, 38, 0.06), transparent 40%);
    border-radius: var(--pa-radius-sm);
    padding-left: 1rem;
}

/* ============================================================
   Booking availability picker
   Engineer-by-day grid shown beside the booking form so a slot
   can be picked by eye instead of typed in.
   ============================================================ */
.availability-grid {
    /* Auto layout so the engineer column takes only the width its names need
       and the day columns divide the rest. */
    table-layout: auto;
    width: 100%;
}

.availability-grid th,
.availability-grid td {
    vertical-align: middle;
    padding: 0.25rem;
    /* Day headings are short but the columns are narrow; without this "Mon
       11 Aug" breaks a letter at a time. */
    white-space: nowrap;
}

.availability-engineer-heading {
    white-space: nowrap;
    font-size: 0.8125rem;
    font-weight: 600;
    position: sticky;
    left: 0;
    background: var(--pa-surface);
    z-index: 1;
}

.availability-grid th.availability-today {
    background: var(--pa-primary-soft);
    border-radius: var(--pa-radius-sm) var(--pa-radius-sm) 0 0;
}

.availability-day {
    min-width: 3.75rem;
}

/* The engineer column sizes to its names; the day columns share what is left
   evenly, so a fortnight fits without a horizontal scrollbar on a wide screen. */
.availability-grid .availability-engineer-heading {
    width: 1%;
}

.availability-slot {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    width: 100%;
    margin-bottom: 0.125rem;
    padding: 0.125rem 0.25rem;
    border: 1px solid transparent;
    border-radius: var(--pa-radius-sm);
    font-size: 0.6875rem;
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
    transition: transform 0.06s ease, box-shadow 0.12s ease;
}

.availability-slot:last-child {
    margin-bottom: 0;
}

.availability-slot:hover {
    transform: translateY(-1px);
    box-shadow: var(--pa-shadow-sm);
}

.availability-slot:focus-visible {
    outline: 2px solid var(--pa-primary);
    outline-offset: 1px;
}

.availability-count {
    font-weight: 700;
    opacity: 0.75;
}

.availability-free {
    background: #ffffff;
    border-color: var(--pa-border-strong);
    color: var(--pa-text-2);
}

.availability-light {
    background: rgba(217, 119, 6, 0.14);
    border-color: rgba(217, 119, 6, 0.35);
    color: #8a5108;
}

.availability-busy {
    background: rgba(220, 38, 38, 0.14);
    border-color: rgba(220, 38, 38, 0.35);
    color: #9b1c1c;
}

.availability-holiday {
    background: repeating-linear-gradient(
        45deg,
        var(--pa-surface-2),
        var(--pa-surface-2) 4px,
        var(--pa-border) 4px,
        var(--pa-border) 8px
    );
    border-color: var(--pa-border-strong);
    color: var(--pa-text-3);
}

.availability-selected {
    border-color: var(--pa-primary);
    box-shadow: 0 0 0 2px var(--pa-primary-soft), var(--pa-shadow-sm);
    color: var(--pa-primary-strong);
}

/* Postcode proximity. A dot rather than a colour, because the fill state already
   owns background and border here — the two need to be readable at once, since a
   session near the client is only useful if it also has room. */
.availability-slot.availability-near-district::after,
.availability-slot.availability-near-area::after {
    content: "";
    width: 0.375rem;
    height: 0.375rem;
    border-radius: 50%;
    flex: 0 0 auto;
}

.availability-slot.availability-near-district::after {
    background: #0f766e;
}

.availability-slot.availability-near-area::after {
    background: rgba(15, 118, 110, 0.4);
}

/* Key swatches under the grid. */
.availability-key {
    display: inline-block;
    width: 0.75rem;
    height: 0.75rem;
    margin-right: 0.25rem;
    vertical-align: -1px;
    border: 1px solid var(--pa-border-strong);
    border-radius: 0.25rem;
}

.availability-key.availability-free { background: #ffffff; }
.availability-key.availability-light { background: rgba(217, 119, 6, 0.35); }
.availability-key.availability-busy { background: rgba(220, 38, 38, 0.35); }
.availability-key.availability-near-district { background: #0f766e; border-color: #0f766e; }
.availability-key.availability-near-area { background: rgba(15, 118, 110, 0.4); }