:root {
  color-scheme: dark;
  --bg: #0f1115;
  --card: #171a21;
  --line: #2b303a;
  --text: #e9edf6;
  --muted: #9ea7b8;
  --accent: #4f8cff;
  --danger: #ff6464;
  --done: #2fc47f;
}

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

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
h1 { margin: 0; font-size: 1.4rem; }
.muted { color: var(--muted); margin: .35rem 0 0; }

.progress-wrap { min-width: 220px; }
.progress-meta { text-align: right; color: var(--muted); margin-bottom: .35rem; }
.progress-bar {
  background: #0b0d12;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  height: 12px;
}
#progressFill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), #7fbcff); }

.toolbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: .6rem;
}

input, select, button, .file-btn {
  width: 100%;
  background: #0f131a;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: .55rem .65rem;
  font-size: .95rem;
}
button, .file-btn { cursor: pointer; text-align: center; }
button:hover, .file-btn:hover { border-color: var(--accent); }
.danger { border-color: #663338; color: #ffc1c1; }

.sections { display: grid; gap: .8rem; }
.section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: .9rem;
}
.section-head {
  display: grid;
  grid-template-columns: 1fr auto auto auto auto auto;
  gap: .5rem;
  align-items: center;
  margin-bottom: .8rem;
}
.section-title { font-weight: 700; }
.task-list { display: grid; gap: .5rem; }

.task {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .55rem;
  background: #11151c;
  display: grid;
  grid-template-columns: auto 1fr 88px 180px 70px 74px;
  gap: .45rem;
  align-items: center;
}
.checkbox-wrap { display: flex; align-items: center; gap: .35rem; color: var(--muted); }
.task.done .task-text {
  text-decoration: line-through;
  color: var(--muted);
}

.empty { color: var(--muted); font-style: italic; border: 1px dashed var(--line); border-radius: 8px; padding: .65rem; }

@media (max-width: 820px) {
  .header { flex-direction: column; align-items: stretch; }
  .progress-meta { text-align: left; }
  .task { grid-template-columns: 1fr 1fr; }
  .task .checkbox-wrap, .task .task-text { grid-column: 1 / -1; }
}