:root {
    --color-bg: #f6f8f8;
    --color-surface: #ffffff;
    --color-text: #16302d;
    --color-muted: #5b706d;
    --color-accent: #0f766e;
    --color-border: #d5e0df;
    --color-danger: #b42318;
    --color-on-accent: #ffffff;
    --color-target: #b45309;
    --nav-height: 3.5rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0e1a19;
        --color-surface: #162826;
        --color-text: #e6f0ef;
        --color-muted: #9bb2af;
        --color-accent: #2dd4bf;
        --color-border: #25403d;
        --color-danger: #ff8a80;
        --color-on-accent: #0e1a19;
        --color-target: #fbbf24;
    }
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding-bottom: calc(var(--nav-height) + env(safe-area-inset-bottom));
    background: var(--color-bg);
    color: var(--color-text);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
}

.site-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
}

.site-header__brand {
    color: var(--color-accent);
    font-size: 1.125rem;
    font-weight: 700;
    text-decoration: none;
}

.page {
    max-width: 48rem;
    margin: 0 auto;
    padding: 1rem;
}

.page h1 {
    margin: 0.5rem 0 1rem;
    font-size: 1.5rem;
}

.empty-state {
    padding: 1rem;
    border: 1px dashed var(--color-border);
    border-radius: 0.5rem;
    background: var(--color-surface);
    color: var(--color-muted);
}

.site-nav {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    min-height: var(--nav-height);
    padding-bottom: env(safe-area-inset-bottom);
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.site-nav__link {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.25rem;
    color: var(--color-muted);
    font-size: 0.875rem;
    text-align: center;
    text-decoration: none;
}

.site-nav__link[aria-current="page"] {
    color: var(--color-accent);
    font-weight: 700;
}

.error-page {
    max-width: 48rem;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.error-page__status {
    margin: 0;
    color: var(--color-accent);
    font-size: 3rem;
    font-weight: 700;
}

@media (min-width: 40rem) {
    body {
        display: flex;
        flex-direction: column;
        min-height: 100vh;
        padding-bottom: 0;
    }

    .site-header {
        order: 1;
    }

    .site-nav {
        position: static;
        order: 2;
        border-top: 0;
        border-bottom: 1px solid var(--color-border);
    }

    .page,
    .error-page {
        order: 3;
        width: 100%;
    }
}

.card {
    margin-bottom: 1rem;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    background: var(--color-surface);
}

.card h2 {
    margin: 0 0 0.75rem;
    font-size: 1.125rem;
}

.field {
    margin-bottom: 0.75rem;
}

.field-label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.field input[type="text"],
.field input[type="password"],
.field select {
    width: 100%;
    max-width: 16rem;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    background: var(--color-bg);
    color: var(--color-text);
    /* 16px prevents iOS Safari from zooming when the field is focused. */
    font: inherit;
    font-size: 1rem;
}

.field select {
    min-height: 2.75rem;
}

.field input[aria-invalid="true"] {
    border-color: var(--color-danger);
}

.field-hint {
    margin: 0.25rem 0 0;
    color: var(--color-muted);
    font-size: 0.875rem;
}

.field-errors,
.form-errors {
    margin: 0.25rem 0;
    padding: 0;
    color: var(--color-danger);
    font-size: 0.9375rem;
    list-style: none;
}

.notice {
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-accent);
    border-radius: 0.5rem;
    background: var(--color-surface);
}

.button {
    min-height: 2.75rem;
    padding: 0.5rem 1.25rem;
    border: 0;
    border-radius: 0.375rem;
    background: var(--color-accent);
    color: var(--color-on-accent);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.button--secondary {
    border: 1px solid var(--color-accent);
    background: transparent;
    color: var(--color-accent);
}

.result {
    margin: 0.75rem 0 0;
    font-size: 1.125rem;
}

.conventions {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0.25rem 1rem;
    margin: 0;
}

.conventions dt {
    color: var(--color-muted);
}

.conventions dd {
    margin: 0;
}

.field input[type="datetime-local"] {
    width: 100%;
    max-width: 16rem;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    background: var(--color-bg);
    color: var(--color-text);
    font: inherit;
    font-size: 1rem;
}

.field input[type="datetime-local"][aria-invalid="true"] {
    border-color: var(--color-danger);
}

.field-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: end;
    gap: 0.5rem;
}

.field-grid .field input[type="text"] {
    max-width: none;
}

.field input[type="text"][name="note"] {
    max-width: none;
}

.measure-list {
    margin: 0 0 1rem;
    padding: 0;
    list-style: none;
}

.measure {
    margin-bottom: 0.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    background: var(--color-surface);
}

.measure__head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.25rem 1rem;
}

.measure__weight {
    font-size: 1.125rem;
}

.measure__details {
    display: flex;
    gap: 1.5rem;
    margin: 0.5rem 0 0;
}

.measure__details dt {
    color: var(--color-muted);
    font-size: 0.8125rem;
}

.measure__details dd {
    margin: 0;
}

.measure__note {
    margin: 0.5rem 0 0;
    color: var(--color-muted);
    overflow-wrap: anywhere;
}

.measure__actions {
    display: flex;
    gap: 1.5rem;
    margin: 0.5rem 0 0;
}

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

.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.confirm-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

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

a.button {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.field input[type="date"] {
    width: 100%;
    max-width: 16rem;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    background: var(--color-bg);
    color: var(--color-text);
    font: inherit;
    font-size: 1rem;
}

.field input[type="date"][aria-invalid="true"] {
    border-color: var(--color-danger);
}

progress {
    display: block;
    width: 100%;
    height: 0.75rem;
    margin: 0.25rem 0 1rem;
    appearance: none;
    border: 0;
    border-radius: 0.375rem;
    background: var(--color-border);
    overflow: hidden;
}

progress::-webkit-progress-bar {
    background: var(--color-border);
}

progress::-webkit-progress-value {
    background: var(--color-accent);
}

progress::-moz-progress-bar {
    background: var(--color-accent);
}

.progress-label {
    margin: 0.75rem 0 0;
    font-size: 0.9375rem;
}

.progress-figures {
    margin: 0.75rem 0;
}

.card h3 {
    margin: 1rem 0 0.5rem;
    font-size: 1rem;
}

.step-list,
.revision-list {
    margin: 0 0 1rem;
    padding: 0;
    list-style: none;
}

.step {
    margin-bottom: 0.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
}

.step--validated {
    border-color: var(--color-accent);
}

.step--pending_validation {
    border-width: 2px;
    border-color: var(--color-accent);
}

.step__head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.5rem;
}

.step__target {
    font-size: 1.125rem;
}

.step__badge {
    color: var(--color-accent);
    font-size: 0.875rem;
    font-weight: 600;
}

.step--upcoming .step__badge,
.step--current .step__badge {
    color: var(--color-muted);
}

.step__kind,
.step__detail {
    margin: 0.25rem 0 0;
    color: var(--color-muted);
    font-size: 0.9375rem;
}

.step__history {
    margin-top: 0.5rem;
    color: var(--color-muted);
    font-size: 0.875rem;
}

.revision-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9375rem;
}

.measure__actions a,
.card a:not(.button) {
    color: var(--color-accent);
}

.tabs,
.period {
    display: flex;
    gap: 0.25rem;
    margin: 0 0 1rem;
    padding: 0.25rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    background: var(--color-surface);
}

.tabs__link,
.period__link {
    flex: 1;
    padding: 0.5rem 0.25rem;
    border-radius: 0.375rem;
    color: var(--color-muted);
    font-size: 0.9375rem;
    text-align: center;
    text-decoration: none;
}

.tabs__link[aria-current],
.period__link[aria-current] {
    background: var(--color-accent);
    color: var(--color-on-accent);
    font-weight: 600;
}

.chart {
    margin: 0 0 1.5rem;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    background: var(--color-surface);
}

.chart__title {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
    font-weight: 700;
}

.chart__frame {
    position: relative;
}

.chart__svg {
    display: block;
    width: 100%;
    max-width: 34rem;
    height: auto;
    margin: 0 auto;
    overflow: visible;
}

.chart__grid {
    stroke: var(--color-border);
    stroke-width: 1;
}

.chart__tick {
    fill: var(--color-muted);
    font-size: 10px;
}

.chart__gap {
    fill: var(--color-border);
    opacity: 0.45;
}

.chart__gap-label {
    fill: var(--color-muted);
    font-size: 9px;
}

.chart__line {
    fill: none;
    stroke: var(--color-muted);
    stroke-width: 1.25;
}

.chart__trend {
    fill: none;
    stroke: var(--color-accent);
    stroke-width: 2.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chart__dot {
    fill: var(--color-muted);
}

.chart__hit {
    fill: transparent;
    cursor: pointer;
}

.chart__hit:focus {
    outline: none;
    stroke: var(--color-accent);
    stroke-width: 2;
}

.chart__target {
    stroke: var(--color-target);
    stroke-width: 1.25;
    stroke-dasharray: 5 3;
}

.chart__target-label {
    fill: var(--color-target);
    font-size: 9px;
}

.chart__tooltip {
    position: absolute;
    z-index: 2;
    max-width: 90%;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    background: var(--color-text);
    color: var(--color-bg);
    font-size: 0.8125rem;
    pointer-events: none;
    white-space: nowrap;
}

.chart__tooltip[hidden] {
    display: none;
}

.chart__legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1rem;
    margin: 0.5rem 0;
    padding: 0;
    color: var(--color-muted);
    font-size: 0.8125rem;
    list-style: none;
}

.chart__legend-item::before {
    display: inline-block;
    width: 1.25rem;
    height: 0;
    margin-right: 0.375rem;
    border-top: 3px solid var(--color-muted);
    vertical-align: middle;
    content: "";
}

.chart__legend-item--trend::before {
    border-top-color: var(--color-accent);
}

.chart__legend-item--target::before {
    border-top: 2px dashed var(--color-target);
}

.chart__legend-item--gap::before {
    height: 0.75rem;
    border-top: 0;
    background: var(--color-border);
}

.chart__stats {
    margin: 0.5rem 0 0;
}

.hero__value {
    margin: 0;
    font-size: 2.5rem;
    line-height: 1.1;
}

.hero__value strong {
    font-weight: 800;
}

.hero__value.is-stale {
    color: var(--color-muted);
}

.hero__date,
.hero__bmi,
.mini__date {
    margin: 0.25rem 0 0;
    color: var(--color-muted);
    font-size: 0.9375rem;
}

.hero__bmi strong {
    color: var(--color-text);
}

.badge {
    display: inline-block;
    padding: 0 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge--stale {
    border: 1px solid var(--color-target);
    color: var(--color-target);
}

.is-warning {
    color: var(--color-target);
}

.dashboard__pair {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.dashboard__pair .mini {
    margin: 0;
}

.mini h2 {
    margin: 0 0 0.25rem;
    font-size: 0.9375rem;
    color: var(--color-muted);
}

.mini__value {
    margin: 0;
    font-size: 1.5rem;
}

.mini.is-stale .mini__value {
    color: var(--color-muted);
}

.checklist {
    margin: 0;
    padding-left: 0;
    list-style: none;
}

.checklist li {
    padding: 0.375rem 0;
}

.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.quick-links .button {
    flex: 1;
    justify-content: center;
}

.compare {
    width: 100%;
    table-layout: fixed;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.compare th:first-child {
    width: 46%;
}

.compare th,
.compare td {
    padding: 0.5rem 0;
    overflow-wrap: anywhere;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
}

.compare td {
    text-align: right;
}

.compare thead th:not(:first-child) {
    text-align: right;
}

.field input[type="file"] {
    max-width: 100%;
    font: inherit;
}

.activity-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.activity-list li {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
    padding: 0.5rem 0;
    border-top: 1px solid var(--color-border);
}

.activity-list li:first-child {
    border-top: 0;
}

.activity-list .is-removed {
    opacity: 0.6;
    text-decoration: line-through;
}

.week-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.week-list li {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.25rem;
    padding: 0.5rem 0;
    border-top: 1px solid var(--color-border);
}

.week-list li:first-child {
    border-top: 0;
}

.week-list__label {
    font-weight: 600;
}

.week-list__bar {
    display: block;
    height: 0.5rem;
    border-radius: 0.25rem;
    background: var(--color-border);
    overflow: hidden;
}

.week-list__bar > span {
    display: block;
    height: 100%;
    background: var(--color-accent);
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.page--narrow {
    max-width: 26rem;
}