/* Colors follow Day Line's standard theme (light and dark). */
:root {
  --bg: #E6EDF6;
  --card: #F4F7FB;
  --text: #132A46;
  --muted: #5B6B80;
  --main: #1D4170;
  --on-main: #FFFFFF;
  --line: #3C6797;
  --border: rgba(19, 42, 70, 0.12);
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10151E;
    --card: #1A2230;
    --text: #E4EBF5;
    --muted: #9AA8BA;
    --main: #8FB3E0;
    --on-main: #10151E;
    --line: #5D84B3;
    --border: rgba(228, 235, 245, 0.12);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.8;
}

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

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Shown on every page until the app is released */
.prerelease {
  background: var(--main);
  color: var(--on-main);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  padding: 8px 16px;
}

/* Header and footer */
.site-header {
  padding: 20px 0 8px;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}
.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  font-size: 14px;
}
.site-nav a { text-decoration: none; }
.site-nav a[aria-current="page"] { font-weight: 700; }

.site-footer {
  margin-top: 56px;
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 13px;
}
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-bottom: 8px;
}

/* Content */
main { padding-top: 16px; }

h1 {
  font-size: 28px;
  line-height: 1.4;
  margin: 16px 0 8px;
}
h2 {
  font-size: 20px;
  line-height: 1.5;
  margin: 40px 0 8px;
}
h3 {
  font-size: 16px;
  margin: 24px 0 4px;
}
p, ul, ol { margin: 8px 0; }
ul, ol { padding-left: 1.4em; }

.lead { color: var(--muted); }

.card {
  background: var(--card);
  border-radius: 14px;
  padding: 16px 20px;
  margin: 16px 0;
}

.updated {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}

/* Day Line top */
.hero {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 24px 0 8px;
}
.hero img {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}
.hero h1 { margin: 0; }

.button {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--main);
  color: var(--on-main);
  font-weight: 700;
  text-decoration: none;
}
.button[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  padding: 0;
  list-style: none;
}
.features li {
  background: var(--card);
  border-radius: 14px;
  padding: 14px 16px;
  margin: 0;
}
.features strong {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Line icons drawn with the accent color */
.icon {
  width: 20px;
  height: 20px;
  flex: none;
  fill: none;
  stroke: var(--main);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
h2.with-icon {
  display: flex;
  align-items: center;
  gap: 8px;
}
h2.with-icon .icon {
  width: 24px;
  height: 24px;
}
.note {
  color: var(--muted);
  font-size: 14px;
}
.features span {
  color: var(--muted);
  font-size: 14px;
}

/* Developer top: list of apps */
.app-list {
  list-style: none;
  padding: 0;
}
.app-list a {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border-radius: 14px;
  padding: 14px 16px;
  color: var(--text);
  text-decoration: none;
}
.app-list img {
  width: 56px;
  height: 56px;
  border-radius: 13px;
}
.app-list span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

/* Help: questions that open */
details {
  background: var(--card);
  border-radius: 12px;
  padding: 12px 16px;
  margin: 8px 0;
}
summary {
  cursor: pointer;
  font-weight: 700;
}
details[open] summary { margin-bottom: 4px; }

/* News */
.news-item {
  background: var(--card);
  border-radius: 14px;
  padding: 16px 20px;
  margin: 12px 0;
}
.news-item h2 {
  font-size: 18px;
  margin: 4px 0 8px;
}
.news-item time {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
}
.badge {
  display: inline-block;
  margin-left: 8px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--main);
  color: var(--on-main);
  font-size: 11px;
  font-weight: 700;
  vertical-align: 1px;
}
.news-empty { color: var(--muted); }