:root {
  color-scheme: light dark;
  --background: #f7f7f5;
  --surface: #ffffff;
  --text: #1d1d1b;
  --muted: #5f5f5b;
  --accent: #1f6feb;
  --border: #d9d9d4;
  --ok: #1b6b3a;
  --error: #a3231b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #16171a;
    --surface: #1f2126;
    --text: #ececeb;
    --muted: #a4a4a0;
    --accent: #7aa8ff;
    --border: #34363c;
    --ok: #7fd39b;
    --error: #ff9a91;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 1rem 3rem;
  background: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.45;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 60rem;
  margin: 0 auto;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  text-decoration: none;
}

main {
  max-width: 60rem;
  margin: 0 auto;
}

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

button {
  font: inherit;
  padding: 0.5rem 1rem;
  border-radius: 0.4rem;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.link-button {
  background: none;
  border: none;
  color: var(--muted);
  text-decoration: underline;
  padding: 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 1.25rem;
  margin-top: 1.5rem;
}

.charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1rem;
}

.charts figure {
  margin: 0;
  min-width: 0;
}

.charts figcaption {
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Chart.js mitoittaa canvasin säiliönsä korkeudesta (maintainAspectRatio: false).
   Korkeus on pakko antaa tässä: jos säiliön korkeus riippuisi canvasista,
   ResizeObserver kasvattaisi kuvaajaa loputtomiin. */
.chart-box {
  position: relative;
  height: 15rem;
}

.chart-box canvas {
  display: block;
}

.chart-box-tall {
  height: 20rem;
}

.rep-chart {
  margin: 0;
}

.rep-chart figcaption {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.35rem;
}

.rep-chart input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.rep-chart .muted {
  margin: 0;
}

.zones {
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.25rem;
}

.zones li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Väri tulee rivin tyylistä (app/zones.py), jotta nimi ja väri pysyvät
   samassa lähteessä. */
.zone-swatch {
  flex: none;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  border: 1px solid var(--border);
}

.login {
  max-width: 22rem;
}

.login form {
  display: grid;
  gap: 0.5rem;
}

input[type="password"] {
  font: inherit;
  padding: 0.5rem;
  border-radius: 0.4rem;
  border: 1px solid var(--border);
  background: var(--background);
  color: var(--text);
}

.notice {
  padding: 0.6rem 0.8rem;
  border-radius: 0.4rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
}

.notice-ok {
  border-color: var(--ok);
  color: var(--ok);
}

.notice-error {
  border-color: var(--error);
  color: var(--error);
}

.sync {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.sync form {
  margin: 0;
}

.sync .notice {
  margin: 0;
}

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

table.activities {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
}

table.activities th,
table.activities td {
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table.activities th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
}

@media (max-width: 40rem) {
  table.activities thead {
    display: none;
  }

  table.activities tr {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0.15rem 0.75rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
  }

  table.activities td {
    display: contents;
    border: none;
    white-space: normal;
  }

  table.activities td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 0.85rem;
  }
}

.site-footer {
  max-width: 60rem;
  margin: 2rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

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