:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e2e5ea;
  --text: #1f2430;
  --muted: #6b7280;
  --accent: #2f5fd8;
  --accent-soft: #eaf0ff;
  --green: #1f9d55;
  --red: #d1453b;
  --yellow: #b8860b;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 28px 32px 12px;
}
header h1 { margin: 0 0 4px; font-size: 1.5rem; }
.subtitle { margin: 0; color: var(--muted); font-size: 0.9rem; }

.tabs {
  display: flex;
  gap: 4px;
  padding: 0 32px;
  border-bottom: 1px solid var(--border);
}
.tab {
  border: none;
  background: none;
  padding: 10px 16px;
  font-size: 0.95rem;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

main { padding: 24px 32px 64px; max-width: 880px; }

.panel { display: none; }
.panel.active { display: block; }

.hint { color: var(--muted); font-size: 0.88rem; margin-top: 0; }

.inline-form {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.inline-form input[type="text"] {
  flex: 1;
  min-width: 200px;
}
input, textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.92rem;
  background: var(--card);
  color: var(--text);
}
button {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--text);
}
button.primary, .inline-form button[type="submit"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
button:hover { filter: brightness(0.97); }

.list { display: flex; flex-direction: column; gap: 8px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.card.done { opacity: 0.55; }
.card .main { flex: 1; min-width: 0; }
.card .title { font-weight: 600; font-size: 0.95rem; }
.card .meta { color: var(--muted); font-size: 0.82rem; margin-top: 2px; }
.card .actions { display: flex; gap: 6px; flex-shrink: 0; }

.badge {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
}
.badge.on { background: #e6f7ec; color: var(--green); }
.badge.off { background: #fdecea; color: var(--red); }
.badge.pending { background: #fff6e0; color: var(--yellow); }

.switch {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider {
  position: absolute; inset: 0;
  background: #d7dbe2;
  border-radius: 999px;
  cursor: pointer;
  transition: 0.15s;
}
.switch .slider::before {
  content: "";
  position: absolute;
  width: 16px; height: 16px;
  left: 3px; top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: 0.15s;
}
.switch input:checked + .slider { background: var(--green); }
.switch input:checked + .slider::before { transform: translateX(18px); }
.switch input:disabled + .slider { opacity: 0.5; cursor: not-allowed; }

#toast {
  position: fixed;
  bottom: 20px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1f2430;
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 0.88rem;
  opacity: 0;
  transition: 0.2s;
  pointer-events: none;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.empty { color: var(--muted); font-size: 0.9rem; padding: 20px 0; }