/* ---------- Theme tokens (dark default; see Core Feature #8) ---------- */
:root,
[data-theme="dark"] {
    --color-bg: #10141a;
    --color-bg-elevated: #1a2029;
    --color-bg-inset: #0c0f14;
    --color-text: #e7eaf0;
    --color-text-muted: #98a2b3;
    --color-border: #2a3140;
    --color-accent: #5b8cff;
    --color-accent-contrast: #ffffff;
    --color-success: #3ddc84;
    --color-warning: #ffc857;
    --color-danger: #ff6b6b;
    --color-danger-bg: #3a1f22;
    --sidebar-bg: #151a21;
    --topbar-bg: #151a21;
    --row-hover: #1f2530;
}

[data-theme="light"] {
    --color-bg: #f5f6f8;
    --color-bg-elevated: #ffffff;
    --color-bg-inset: #eef0f3;
    --color-text: #1a2029;
    --color-text-muted: #5b6472;
    --color-border: #dde1e8;
    --color-accent: #2f6fed;
    --color-accent-contrast: #ffffff;
    --color-success: #1a9c5c;
    --color-warning: #9a6b00;
    --color-danger: #c94141;
    --color-danger-bg: #fbe8e8;
    --sidebar-bg: #ffffff;
    --topbar-bg: #ffffff;
    --row-hover: #f1f4f9;
}

:root {
    --sidebar-width-collapsed: 60px;
    --sidebar-width-expanded: 230px;
    --topbar-height: 52px;
}

* {
    box-sizing: border-box;
}

html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    height: 100%;
}

a {
    color: var(--color-accent);
}

h1:focus {
    outline: none;
}

/* ---------- App shell ---------- */
.app-shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    background: var(--sidebar-bg);
    border-right: 1px solid var(--color-border);
    width: var(--sidebar-width-collapsed);
    flex-shrink: 0;
    transition: width 0.15s ease-in-out;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    /* Task 16 — pinned the same way Task 15 pinned .top-bar: sticky, not fixed, since the
       document is still the sole scroll container. .app-shell's default align-items: stretch would
       otherwise grow .sidebar to match .app-main's full (tall, content-driven) height — sticky on
       a box that's already document-height doesn't visibly misbehave, but it's fragile and makes
       the box far taller than it needs to be. align-self: flex-start opts out of that stretch, and
       height: 100vh gives the box exactly one viewport's height instead — the standard sticky-full-
       height-sidebar pattern, robust regardless of how tall the content column grows. z-index
       matches .top-bar's (30): the two don't actually overlap (sidebar is the left column, top-bar
       starts to its right, meeting cleanly at that shared edge), but they're conceptually the same
       pinned-chrome layer, so they share a deliberate value rather than an accidental one — still
       above ordinary content and the polling-unit picker dropdown (20), below #blazor-error-ui's
       fixed banner (1000). */
    position: sticky;
    top: 0;
    align-self: flex-start;
    height: 100vh;
    z-index: 30;
}

.sidebar.expanded {
    width: var(--sidebar-width-expanded);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    height: var(--topbar-height);
    padding: 0 0.9rem;
    font-weight: 700;
    font-size: 1.05rem;
    white-space: nowrap;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-brand .brand-logo-slot {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    background: var(--color-accent);
    color: var(--color-accent-contrast);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
}

.sidebar-brand .brand-wordmark {
    opacity: 0;
    transition: opacity 0.1s ease-in-out;
}

.sidebar.expanded .sidebar-brand .brand-wordmark {
    opacity: 1;
}

.sidebar-nav {
    list-style: none;
    margin: 0.5rem 0 0 0;
    padding: 0;
}

.sidebar-nav-item button {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    width: 100%;
    padding: 0.65rem 0.9rem;
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    white-space: nowrap;
    text-align: left;
    font-size: 0.9rem;
}

.sidebar-nav-item button:hover {
    background: var(--row-hover);
    color: var(--color-text);
}

.sidebar-nav-item.active button {
    color: var(--color-accent);
    background: var(--row-hover);
}

.sidebar-nav-item svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.sidebar-nav-item .nav-label {
    opacity: 0;
    transition: opacity 0.1s ease-in-out;
}

.sidebar.expanded .sidebar-nav-item .nav-label {
    opacity: 1;
}

/* ---------- Top bar ---------- */
.app-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.top-bar {
    height: var(--topbar-height);
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    gap: 1rem;
    /* Task 15 — pinned while the page scrolls. `sticky`, not `fixed`: the whole document is the
       scrolling context here (nothing constrains .app-shell/.app-main to viewport height), so
       sticky needs no compensating padding-top on .content and no separate scroll container.
       z-index sits above ordinary page content and the polling-unit picker's dropdown (20), but
       below #blazor-error-ui's fixed banner (1000) so that still shows on top if it appears. */
    position: sticky;
    top: 0;
    z-index: 30;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.hamburger-button {
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 0.4rem;
    border-radius: 6px;
}

.hamburger-button:hover {
    background: var(--row-hover);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.connectivity-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.connectivity-badge.online {
    color: var(--color-success);
    background: color-mix(in srgb, var(--color-success) 15%, transparent);
}

.connectivity-badge.offline {
    color: var(--color-danger);
    background: var(--color-danger-bg);
}

.connectivity-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
}

.theme-toggle-button, .logout-button {
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    border-radius: 6px;
    padding: 0.35rem 0.6rem;
    cursor: pointer;
    font-size: 0.85rem;
}

.theme-toggle-button:hover, .logout-button:hover {
    background: var(--row-hover);
}

.user-chip {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.content {
    padding: 1.25rem;
    flex: 1;
}

/* ---------- Generic components ---------- */
.card {
    background: var(--color-bg-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

table.data-table th, table.data-table td {
    padding: 0.5rem 0.65rem;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
    white-space: nowrap;
}

table.data-table th {
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

table.data-table tbody tr:hover {
    background: var(--row-hover);
}

.table-scroll {
    overflow-x: auto;
}

.btn {
    border-radius: 6px;
    padding: 0.45rem 0.9rem;
    font-size: 0.88rem;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-accent-contrast);
    border-color: var(--color-accent);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background: var(--row-hover);
}

.form-control, select.form-control, textarea.form-control {
    background: var(--color-bg-inset);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    border-radius: 6px;
    padding: 0.45rem 0.6rem;
    font-size: 0.9rem;
    width: 100%;
}

.capture-review {
    margin: 0 0 1rem;
    display: grid;
    gap: 0.55rem;
}

.capture-review > div {
    display: grid;
    grid-template-columns: 8.5rem 1fr;
    gap: 0.75rem;
}

.capture-review dt {
    color: var(--color-text-muted);
    font-size: 0.82rem;
}

.capture-review dd {
    margin: 0;
    word-break: break-word;
}

.form-control:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 0;
}

label.form-label {
    display: block;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.field-group {
    margin-bottom: 0.9rem;
}

.alert {
    border-radius: 8px;
    padding: 0.7rem 0.9rem;
    font-size: 0.88rem;
    margin-bottom: 1rem;
}

.alert-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.alert-success {
    background: color-mix(in srgb, var(--color-success) 15%, transparent);
    color: var(--color-success);
}

.alert-warning {
    background: color-mix(in srgb, var(--color-warning) 18%, transparent);
    color: var(--color-warning);
}

.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--row-hover);
    color: var(--color-text-muted);
}

.badge.badge-success { color: var(--color-success); }
.badge.badge-danger { color: var(--color-danger); }
.badge.badge-warning { color: var(--color-warning); }

.tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 1rem;
}

.tabs button {
    background: none;
    border: none;
    padding: 0.5rem 0.9rem;
    color: var(--color-text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    font-size: 0.9rem;
}

.tabs button.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: end;
    margin-bottom: 1rem;
}

.filter-bar .field-group {
    margin-bottom: 0;
    min-width: 150px;
}

/* ---------- Framework bits kept from the template ---------- */
#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

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

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

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

.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 20vh auto 1rem auto;
}

    .loading-progress circle {
        fill: none;
        stroke: var(--color-border, #e0e0e0);
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:last-child {
            stroke: var(--color-accent, #1b6ec2);
            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
            transition: stroke-dasharray 0.05s ease-in-out;
        }

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
    color: var(--color-text);
}

    .loading-progress-text:after {
        content: var(--blazor-load-percentage-text, "Loading");
    }

code {
    color: var(--color-accent);
}

/* Locked, non-editable field styled to match .form-control (see Capture screen, Agent role). */
.readonly-field {
    color: var(--color-text-muted);
    cursor: default;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Dashboard stat cards + breakdown */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.stat-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 1rem 1.15rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.stat-value {
    font-size: 1.9rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-text);
}

.stat-label {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* Searchable polling-unit picker (Users + Capture) */
.pu-picker {
    position: relative;
}

.pu-picker-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 0.4rem;
}

.pu-picker-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    max-width: 100%;
    padding: 0.15rem 0.35rem 0.15rem 0.55rem;
    font-size: 0.8rem;
    background: var(--row-hover);
    border: 1px solid var(--color-border);
    border-radius: 999px;
}

.pu-picker-chip-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pu-picker-chip-x {
    flex: none;
    border: 0;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    padding: 0 0.15rem;
}

.pu-picker-chip-x:hover {
    color: var(--color-text);
}

.pu-picker-list {
    position: absolute;
    z-index: 20;
    left: 0;
    right: 0;
    top: calc(100% + 2px);
    margin: 0;
    padding: 0.25rem 0;
    list-style: none;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    max-height: 16rem;
    overflow-y: auto;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.pu-picker-list li {
    padding: 0.4rem 0.65rem;
    font-size: 0.85rem;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pu-picker-list li.pu-picker-active,
.pu-picker-list li:hover {
    background: var(--row-hover);
}

.pu-picker-list li.pu-picker-note {
    cursor: default;
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.pu-picker-list li.pu-picker-note:hover {
    background: transparent;
}