:root {
  --bg: #0f1115;
  --card: #151821;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #7c3aed;
  --accent-2: #22c55e;
  --danger: #ef4444;
  --border: #232838;
  --highlight: rgba(124,58,237,0.15);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  background: radial-gradient(1100px 400px at 80% -20%, rgba(124,58,237,.2), transparent 60%), var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

.header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.title-wrap h1 { margin: 0; font-size: 1.8rem; }
.subtitle { margin: 4px 0 0; color: var(--muted); }
.header-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.header-actions button { background: var(--accent); color: #fff; border: none; border-radius: 10px; padding: 10px 12px; cursor: pointer; font-weight: 600; }
.header-actions button:hover { filter: brightness(1.1); }

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin: 12px 0;
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
}

.analytics .metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 14px;
}
.metric { background: #0d0f14; border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.metric-label { color: var(--muted); font-size: 0.9rem; }
.metric-value { font-size: 1.6rem; font-weight: 700; margin-top: 4px; }

.habits-list { display: grid; gap: 14px; }
.habit-card { background: #0d0f14; border: 1px solid var(--border); border-radius: 12px; padding: 12px; }
.habit-header { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; }
.habit-badge { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); }
.habit-titles .habit-name { font-weight: 700; }
.habit-actions button { background: #0d0f14; border: 1px solid var(--border); color: var(--text); padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.habit-actions button:hover { border-color: #334155; }

.habit-stats { display: flex; gap: 18px; flex-wrap: wrap; margin: 8px 0 12px; }
.label { color: var(--muted); }

.habit-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; }
.habit-cell {
  background: #0b0d12;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 8px;
  text-align: center;
  cursor: pointer;
  user-select: none;
}
.habit-cell.completed { background: var(--highlight); border-color: var(--accent); }
.habit-cell .day { display: block; font-size: 0.85rem; color: var(--muted); }

.history-header { display: flex; justify-content: space-between; align-items: center; }
.history-actions button { background: #0d0f14; border: 1px solid var(--border); color: var(--text); padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.history-actions button:hover { border-color: #334155; }
.history-list { margin: 0; padding: 0; list-style: none; }
.history-list li { padding: 8px 10px; border-bottom: 1px solid var(--border); }

.footer { text-align: center; margin-top: 12px; color: var(--muted); }

dialog::backdrop { background: rgba(0,0,0,0.6); }
.modal { min-width: 320px; max-width: 640px; }
.field { margin: 10px 0; }
.field input {
  width: 100%;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0d0f14;
  color: var(--text);
}
.muted { color: var(--muted); }