:root {
  --bg: #fbf7f8;
  --card: #ffffff;
  --text: #2b2327;
  --muted: #7d6f75;
  --border: #eadfe3;
  --accent: #c2416b;
  --accent-text: #ffffff;
  --period: #e0527e;
  --predicted: #f6c3d3;
  --fertile: #cfe8dc;
  --ovulation: #4fa37c;
  --error: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1618;
    --card: #251e21;
    --text: #f2e9ec;
    --muted: #a8979e;
    --border: #3a2f34;
    --accent: #e0668f;
    --accent-text: #1b1618;
    --period: #d9467a;
    --predicted: #6b3348;
    --fertile: #2f4d40;
    --ovulation: #5cbf91;
    --error: #ff8a80;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.topbar, main {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

.topbar { padding-top: 24px; }
.topbar h1 { margin: 0; font-size: 1.6rem; color: var(--accent); }
.topbar p { margin: 4px 0 16px; }

h2 { margin: 0 0 12px; font-size: 1.1rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  margin-bottom: 16px;
}

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

/* Ringkasan */
.hero .label { color: var(--muted); font-size: 0.9rem; margin: 0; }
.hero .big { font-size: 1.7rem; font-weight: 700; margin: 2px 0; }
.hero .status { font-weight: 600; color: var(--accent); margin: 0 0 14px; }
.hero .status.late { color: var(--error); }
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}
.stat {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}
.stat b { display: block; font-size: 1.15rem; }
.stat span { color: var(--muted); font-size: 0.8rem; }

/* Form */
form label { display: block; margin-bottom: 12px; font-size: 0.9rem; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .row { grid-template-columns: 1fr; } }

input[type="date"], input[type="text"] {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

button, .button {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}
button:hover, .button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.link { border: none; background: none; padding: 2px 6px; color: var(--accent); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.error { color: var(--error); font-size: 0.9rem; margin: 0 0 10px; }

/* Kalender */
.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.cal-head h2 { margin: 0; }
.calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  text-align: center;
}
.calendar .dow { font-size: 0.75rem; color: var(--muted); padding: 4px 0; }
.calendar .day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.9rem;
  cursor: pointer;
  border: 2px solid transparent;
}
.calendar .day:hover { border-color: var(--border); }
.calendar .day.empty { cursor: default; }
.calendar .day.fertile { background: var(--fertile); }
.calendar .day.ovulation { background: var(--ovulation); color: #fff; }
.calendar .day.predicted { background: var(--predicted); }
.calendar .day.period { background: var(--period); color: #fff; }
.calendar .day.today { border-color: var(--text); font-weight: 700; }

.legend { list-style: none; padding: 0; margin: 12px 0 4px; display: flex; flex-wrap: wrap; gap: 14px; font-size: 0.85rem; }
.legend li { display: flex; align-items: center; gap: 6px; }
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.period { background: var(--period); }
.dot.predicted { background: var(--predicted); }
.dot.fertile { background: var(--fertile); }
.dot.ovulation { background: var(--ovulation); }

/* Riwayat */
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 0.8rem; }
td.num { white-space: nowrap; }
.tag { font-size: 0.75rem; color: var(--muted); }
.table-wrap { overflow-x: auto; }

.disclaimer { text-align: center; margin: 8px 0 32px; }