:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2430;
  --muted: #7a8194;
  --accent: #3b82f6;
  --overdue: #ef4444;
  --due-today: #f59e0b;
  --border: #e6e8ee;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}
.view { max-width: 640px; margin: 0 auto; padding: 24px 16px; }
.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 0.9rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}
h1 { font-size: 1.4rem; margin: 0; }
h2 {
  font-size: 0.8rem; margin: 0 0 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.04em;
}

/* Auth */
.auth-card { max-width: 360px; margin: 10vh auto 0; text-align: center; }
#auth-form { display: flex; flex-direction: column; gap: 10px; margin: 16px 0; }
input, select, button { font: inherit; }
input, select {
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff;
}
button {
  cursor: pointer; border: none; border-radius: 8px; padding: 10px 14px;
  background: var(--accent); color: #fff; font-weight: 600;
}
button:hover { filter: brightness(0.95); }
.btn-secondary { background: #eef0f4; color: var(--text); }
a { color: var(--accent); }
.message { min-height: 1.2em; color: var(--muted); font-size: 0.85rem; }

/* Header */
.app-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px; flex-wrap: wrap; gap: 8px;
}
.header-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* Next priority */
.next-card { border-left: 4px solid var(--accent); }
.next-title { font-size: 1.25rem; font-weight: 700; margin: 4px 0; }
.next-title.overdue { color: var(--overdue); }
.next-title.due-today { color: var(--due-today); }

/* Add bar */
.add-bar { display: flex; gap: 8px; flex-wrap: wrap; }
.add-bar #new-title { flex: 1 1 100%; }

/* Task list */
.task-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.task {
  display: flex; align-items: center; gap: 10px; padding: 10px;
  border: 1px solid var(--border); border-radius: 8px;
}
.task.overdue { border-color: var(--overdue); background: #fef2f2; }
.task.due-today { border-color: var(--due-today); background: #fffbeb; }
.task-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.task-title { font-weight: 600; word-break: break-word; }
.task-meta { font-size: 0.8rem; color: var(--muted); text-transform: capitalize; }
.task-actions { display: flex; gap: 2px; }
.icon-btn { background: transparent; padding: 4px 6px; font-size: 1rem; }
.task-list.done .task-title { text-decoration: line-through; color: var(--muted); }
input[type="checkbox"] { width: 18px; height: 18px; flex-shrink: 0; }