:root {
  --bg1: #0f172a; --bg2: #1e1b4b;
  --glass: rgba(255,255,255,.08); --line: rgba(255,255,255,.14);
  --text: #e8eaf6; --muted: #9aa3c7; --accent: #8b7cff;
  --high: #ff6b81; --mid: #ffc85c; --low: #4ade9b;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; color: var(--text);
  font-family: "Inter", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at 20% 0%, #3b2f8f 0%, transparent 45%),
              linear-gradient(135deg, var(--bg1), var(--bg2));
  background-attachment: fixed;
}
.app { max-width: 820px; margin: 0 auto; padding: 36px 18px 60px; }
.header h1 {
  margin: 0; font-size: 2rem;
  background: linear-gradient(90deg, #a5b4fc, #f0abfc);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sub { color: var(--muted); margin: 6px 0 22px; }
.tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.tab {
  flex: 1; padding: 12px; border-radius: 14px; border: 1px solid var(--line);
  background: var(--glass); color: var(--text); font-size: 1rem; cursor: pointer;
  transition: all .2s;
}
.tab:hover { transform: translateY(-2px); }
.tab.active { background: linear-gradient(135deg, #6d5dfc, #b05cff); border-color: transparent; box-shadow: 0 6px 20px rgba(109,93,252,.45); }
.card {
  background: var(--glass); border: 1px solid var(--line); border-radius: 18px;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.form { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 16px; margin-bottom: 24px; }
.form input[type=text], .form textarea { grid-column: 1 / -1; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: .8rem; color: var(--muted); }
input, select, textarea {
  padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line);
  background: rgba(0,0,0,.25); color: var(--text); font: inherit; color-scheme: dark;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); }
.btn {
  grid-column: 1 / -1; padding: 12px; border: 0; border-radius: 12px; cursor: pointer;
  color: #fff; font-weight: 600; font-size: 1rem;
  background: linear-gradient(135deg, #6d5dfc, #b05cff); transition: transform .15s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(109,93,252,.5); }
.week { margin-bottom: 22px; animation: fade .3s ease; }
.week h2 { font-size: 1rem; color: #c4b5fd; margin: 0 0 10px; font-weight: 600; }
.week h2 small { color: var(--muted); font-weight: 400; margin-left: 8px; }
.task {
  display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; margin-bottom: 10px;
  border-left: 4px solid var(--mid); transition: transform .2s;
}
.task:hover { transform: translateX(4px); }
.task.high { border-left-color: var(--high); }
.task.low { border-left-color: var(--low); }
.task input[type=checkbox] { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--accent); }
.body { flex: 1; min-width: 0; }
.title { font-weight: 600; word-break: break-word; }
.task.done .title { text-decoration: line-through; opacity: .45; }
.meta { font-size: .8rem; color: var(--muted); margin-top: 4px; }
.badge { padding: 1px 8px; border-radius: 99px; font-size: .72rem; margin-left: 6px; color: #111; background: var(--mid); }
.badge.high { background: var(--high); } .badge.low { background: var(--low); }
.notes { margin-top: 6px; font-size: .85rem; white-space: pre-wrap; word-break: break-word; opacity: .85; }
.del { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 1.1rem; }
.del:hover { color: var(--high); }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (max-width: 600px) { .form { grid-template-columns: 1fr; } }