:root {
  --ink: #1b1f24;
  --muted: #5b6470;
  --border: #dde1e6;
  --surface: #ffffff;
  --bg: #f6f7f9;
  --accent: #2f6fed;
  --accent-ink: #ffffff;
  --success: #1a7f4e;
  --success-bg: #e6f6ee;
  --error: #b3261e;
  --error-bg: #fbe9e7;
  --behind-bg: #fbe9e7;
  --behind-ink: #b3261e;
  --ahead-bg: #e6f6ee;
  --ahead-ink: #1a7f4e;
  --track-bg: #eef1f6;
  --track-ink: #46505c;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

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

.site-header {
  padding: 1rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--ink);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.page-header h1, .page-header h2 { margin: 0; }

.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.actions form { display: inline; }

h1 { font-size: 1.5rem; }
h2 { font-size: 1.15rem; margin-top: 2rem; }

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

.flash {
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}
.flash-success { background: var(--success-bg); color: var(--success); }
.flash-error { background: var(--error-bg); color: var(--error); }

.goal-list, .habit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.goal-card, .habit-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
}

.goal-card h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.goal-card a, .habit-row > div > strong { text-decoration: none; color: var(--ink); }

.habit-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.meta { color: var(--muted); font-size: 0.9rem; margin: 0.25rem 0 0; }

.progress-bar {
  background: var(--track-bg);
  border-radius: 999px;
  height: 10px;
  overflow: hidden;
  margin: 0.4rem 0;
}
.progress-bar-fill {
  background: var(--accent);
  height: 100%;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: var(--track-bg);
  color: var(--track-ink);
}
.badge-active, .badge-ahead { background: var(--ahead-bg); color: var(--ahead-ink); }
.badge-on_track { background: var(--track-bg); color: var(--track-ink); }
.badge-behind { background: var(--behind-bg); color: var(--behind-ink); }
.badge-paused { background: #fff4d6; color: #8a5a00; }
.badge-archived { background: var(--track-bg); color: var(--track-ink); }
.badge-overdue { background: var(--behind-bg); color: var(--behind-ink); }

.goal-meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.25rem 1rem;
  margin: 1rem 0;
}
.goal-meta dt { color: var(--muted); }
.goal-meta dd { margin: 0; }

.schedule { display: flex; gap: 0.3rem; margin: 0.4rem 0; }
.schedule span {
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  background: var(--track-bg);
  color: var(--muted);
}
.schedule .day-on { background: var(--accent); color: var(--accent-ink); }

form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  max-width: 480px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-weight: 600;
  font-size: 0.9rem;
}

input[type="text"], input[type="number"], input[type="date"], textarea, select {
  font: inherit;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
}

textarea { min-height: 4rem; resize: vertical; }

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.8rem;
}
legend { font-weight: 600; font-size: 0.85rem; padding: 0 0.3rem; }

.day-check {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 0.3rem;
  font-weight: 400;
  margin-right: 0.6rem;
}

.pause-toggle { flex-direction: row; align-items: center; gap: 0.5rem; }

button, .button {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
}

button[type="submit"], .button.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.button-danger { color: var(--error); border-color: var(--error); background: var(--surface); }

.errors {
  background: var(--error-bg);
  color: var(--error);
  border-radius: var(--radius);
  padding: 0.75rem 1rem 0.75rem 1.5rem;
  margin: 0 0 1rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef1f6;
    --muted: #9aa4b2;
    --border: #2c333d;
    --surface: #1b2027;
    --bg: #12161b;
    --track-bg: #232a33;
    --track-ink: #b7c0cc;
    --success-bg: #12301f;
    --error-bg: #341613;
    --behind-bg: #341613;
    --ahead-bg: #12301f;
  }
}