:root {
    --bg: #f6f7f9;
    --card: #ffffff;
    --text: #1b1f24;
    --muted: #5b6570;
    --accent: #1769aa;
    --on-accent: #ffffff;
    --border: #d8dde3;
    --warn: #b45309;
    --danger: #b42318;
    --danger-wash: #fdecea;

    /* chart series */
    --series-sys: #2a78d6;
    --series-dia: #eb6834;
    --series-pulse: #1baf7a;
    --gridline: #e1e0d9;

    /* category status (always paired with a text label) */
    --good: #0ca30c;
    --warning: #fab219;
    --serious: #ec835a;
    --critical: #d03b3b;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #14171a;
        --card: #1d2226;
        --text: #eef1f4;
        --muted: #a3adb8;
        --accent: #6cb6ff;
        --on-accent: #0b1a26;
        --border: #2f363d;
        --warn: #f0b25c;
        --danger: #ff8a80;
        --danger-wash: #3a1d1b;

        --series-sys: #3987e5;
        --series-dia: #d95926;
        --series-pulse: #199e70;
        --gridline: #2c2f33;
    }
}

[hidden] {
    display: none !important;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 18px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
    max-width: 640px;
    margin: 0 auto;
    padding: 16px;
}

h1 {
    font-size: 1.4rem;
    margin: 0;
}

h2 {
    font-size: 1.1rem;
    margin: 0 0 8px;
}

.top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.who {
    display: flex;
    gap: 8px;
    align-items: center;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    margin-bottom: 16px;
}

.card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.card-head h2 {
    margin: 0;
}

textarea,
input,
select {
    width: 100%;
    font: inherit;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px;
}

textarea {
    min-height: 110px;
    resize: vertical;
}

select {
    width: auto;
    min-height: 48px;
}

label {
    display: block;
    font-size: 0.85rem;
    color: var(--muted);
}

label input {
    margin-top: 4px;
    font-size: 1.1rem;
}

button {
    font: inherit;
    cursor: pointer;
    border-radius: 10px;
    min-height: 52px;
    padding: 0 18px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
}

button.compact {
    min-height: 44px;
    padding: 0 14px;
    font-size: 0.95rem;
}

.head-actions {
    display: flex;
    gap: 8px;
}

button.primary {
    background: var(--accent);
    color: var(--on-accent);
    border-color: var(--accent);
    font-weight: 600;
}

button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

button.small {
    min-height: 48px;
    min-width: 48px;
    padding: 0 12px;
}

button.link {
    min-height: 40px;
    border: none;
    background: none;
    color: var(--accent);
    padding: 0 6px;
}

button.danger {
    color: var(--danger);
}

.actions {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.actions .primary {
    flex: 1;
}

/* Quick entry / note tabs */
.tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    margin-bottom: 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.tabs button {
    flex: 1;
    min-height: 44px;
    border: none;
    background: none;
    color: var(--muted);
}

.tabs button[aria-selected="true"] {
    background: var(--card);
    color: var(--text);
    font-weight: 600;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
}

/* Position and tag choices */
.details {
    margin-top: 12px;
}

.chip-label {
    font-size: 0.85rem;
    color: var(--muted);
    margin: 10px 0 6px;
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chip {
    min-height: 44px;
    padding: 0 14px;
    border-radius: 999px;
    font-size: 0.95rem;
}

.chip[aria-pressed="true"] {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--on-accent);
    font-weight: 600;
}

.chip[aria-pressed="true"]::before {
    content: "\2713  ";
}

.row {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 12px;
}

.row-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 8px;
}

.warn {
    color: var(--warn);
    font-size: 0.9rem;
    margin: 6px 0 0;
}

.status {
    margin: 8px 0 0;
    min-height: 1.4em;
    color: var(--muted);
}

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

.muted {
    color: var(--muted);
    font-size: 0.9rem;
}

/* Crisis alert */
.crisis {
    border: 2px solid var(--critical);
    background: var(--danger-wash);
}

.crisis h2 {
    color: var(--danger);
    font-size: 1.2rem;
}

.crisis p {
    margin: 0 0 10px;
}

.crisis ul {
    margin: 0 0 12px 1.2em;
    list-style: disc;
}

.crisis li {
    display: list-item;
    border: none;
    padding: 2px 0;
}

/* Category badge: a colored dot beside a text label */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
}

.badge.crisis-badge {
    font-weight: 700;
    color: var(--danger);
}

.badge .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex: none;
}

.dot.good {
    background: var(--good);
}

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

.dot.serious {
    background: var(--serious);
}

.dot.critical {
    background: var(--critical);
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 10px;
}

.tile {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tile .value {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Trend chart */
.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 16px;
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 6px;
}

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

.key {
    width: 16px;
    height: 2px;
    border-radius: 1px;
    display: inline-block;
}

.key.sys,
.line.sys {
    background: var(--series-sys);
    stroke: var(--series-sys);
}

.key.dia,
.line.dia {
    background: var(--series-dia);
    stroke: var(--series-dia);
}

.key.pulse,
.line.pulse {
    background: var(--series-pulse);
    stroke: var(--series-pulse);
}

.readout {
    min-height: 2.6em;
    margin-bottom: 4px;
}

.readout .big {
    display: block;
}

#chart {
    display: block;
    touch-action: pan-y;
    outline-offset: 4px;
}

#chart .line {
    fill: none;
    stroke-width: 2;
    stroke-linejoin: round;
    stroke-linecap: round;
    background: none;
}

#chart .mark {
    stroke: var(--card);
    stroke-width: 2;
}

#chart .mark.sys {
    fill: var(--series-sys);
}

#chart .mark.dia {
    fill: var(--series-dia);
}

#chart .mark.pulse {
    fill: var(--series-pulse);
}

#chart .gridline {
    stroke: var(--gridline);
    stroke-width: 1;
}

#chart .axis-text {
    fill: var(--muted);
    font-size: 12px;
    font-variant-numeric: tabular-nums;
}

#chart .panel-title {
    fill: var(--muted);
    font-size: 13px;
}

#chart .end-label {
    fill: var(--text);
    font-size: 12px;
    font-weight: 600;
}

#chart .crosshair {
    stroke: var(--muted);
    stroke-width: 1;
}

/* History */
ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 0;
    border-top: 1px solid var(--border);
}

li:first-child {
    border-top: none;
}

.pager {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.pager button {
    min-height: 48px;
    padding: 0 14px;
}

.reading-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 10px;
}

.big {
    font-size: 1.15rem;
    font-weight: 600;
}

footer {
    font-size: 0.85rem;
    color: var(--muted);
    padding: 4px 0 24px;
}

/* "Add a person" window */
dialog {
    width: min(400px, calc(100% - 32px));
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--card);
    color: var(--text);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.45);
}

dialog form {
    padding: 20px;
}

dialog p {
    margin: 0 0 12px;
}

dialog .status {
    margin: 6px 0 0;
}