:root {
  --bg: #f6f8ff;
  --card: #e9f1ff;
  --accent: #4b4bff;
  --text: #171717;
  --muted: #bdbdbd;
  --chip: #e9e9ee;
  --warning: #f7c948;
  --success: #24a148;
  --danger: #e01e37;
  --shadow: 0 8px 24px rgba(0,0,0,.08);
  --radius: 16px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 600px at 50% -200px, rgba(0,0,0,.04), transparent 60%), #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
}
.brand { font-weight: 700; color: var(--accent); font-size: 26px; }
.auth-actions { display: flex; gap: 12px; }

.btn { 
  border: none; cursor: pointer; padding: 10px 18px; border-radius: 12px; font-weight: 600; 
}
.btn-sm { padding: 8px 12px; font-size: 14px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary { background: #f2f2ff; color: var(--accent); }
.btn-muted { background: #d9d9dd; color: #444; }
.icon-btn { background: transparent; border: none; cursor: pointer; }

/* Make the header board action buttons small and smart */
#addTaskBtn,
#addNoteBtn { 
  padding: 6px 12px; 
  font-size: 14px; 
  border-radius: 10px; 
  line-height: 1; 
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 16px 24px; flex: 1; display: flex; flex-direction: column; }

.hero { text-align: center; margin-top: 6px; }
.hero h1 { font-size: 36px; margin: 10px 0 4px; }
.hero p { font-size: 20px; color: #333; margin: 0 0 18px; }

.dashboard { display: grid; grid-template-columns: 280px 1fr; gap: 24px; align-items: stretch; flex: 1; }

.stats { background: #fff; border-radius: 18px; padding: 18px; box-shadow: var(--shadow); }
.stat { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-radius: 12px; margin-bottom: 16px; color: #fff; font-size: 20px; font-weight: 700; }
.stat span { font-weight: 600; }
.stat b { font-size: 22px; }
.stat-total { background: #3b34ff; }
.stat-completed { background: #1e9e43; }
.stat-today { background: #f0b521; }
.stat-overdue { background: #db1f2a; }
.export-actions { display: flex; gap: 10px; margin-top: 8px; }

.boards { display: grid; grid-template-columns: 1fr 420px; gap: 24px; align-items: stretch; }
.card { background: var(--card); border-radius: 18px; padding: 16px; box-shadow: var(--shadow); height: 100%; }
.card { display: flex; flex-direction: column; }
.card-header { display: flex; flex-direction: column; align-items: stretch; gap: 10px; }
.card-header h2 { margin: 6px 0; font-size: 22px; text-align: center; }
.board-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.board-actions .ba-left { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.board-actions .ba-right { display: flex; align-items: center; }

.input { width: 100%; padding: 12px 14px; border: 1px solid #e1e1e6; border-radius: 12px; outline: none; background: #fff; }
.input.search { width: 260px; }
.textarea { resize: vertical; }

.filters { display: flex; gap: 10px; }
.chip { background: #d9d9df; border: none; padding: 8px 12px; border-radius: 10px; color: #333; cursor: pointer; }
.chip.active { background: var(--accent); color: #fff; }

.task-list { list-style: none; padding: 0; margin: 10px 0 0; max-height: 100%; overflow: auto; }
.task-item { background: #fff; border-radius: 14px; padding: 12px 14px; display: grid; grid-template-columns: 28px 1fr auto; align-items: center; gap: 12px; }
.task-list .task-item + .task-item { margin-top: 10px; }
.task-item[hidden] { display: none; }
.task-title { font-weight: 600; }
.task-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: #666; }
.priority.high { color: #e11; font-weight: 700; }
.due-warning { color: #b98500; background: #fff4cf; padding: 2px 8px; border-radius: 8px; }
.created { opacity: .9; }

.checkbox { display: inline-flex; align-items: center; }
.checkbox input { display: none; }
.checkbox span { width: 18px; height: 18px; display: inline-block; border: 2px solid #9dd19a; border-radius: 4px; background: #f3fff3; position: relative; }
.checkbox input:checked + span { background: #eaffea; }
.checkbox input:checked + span:after { content: ""; position: absolute; width: 10px; height: 10px; left: 2px; top: 2px; background: #22c55e; border-radius: 2px; }

.notes-board .note-card { background: #fff; border-radius: 14px; padding: 16px; margin-top: 12px; }
.note-card h3 { margin: 0 0 8px; font-size: 16px; font-weight: 700; }
.note-card p { margin: 0; font-size: 13px; color: #333; line-height: 1.5; }

.app-footer { text-align: center; padding: 18px; color: #333; margin-top: auto; }

/* Modals */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.25); display: none; align-items: center; justify-content: center; padding: 20px; }
.modal[aria-hidden="false"] { display: flex; }
.modal-dialog { width: 420px; background: var(--card); border-radius: 14px; box-shadow: var(--shadow); padding: 14px; }
.modal-header { font-size: 22px; font-weight: 700; padding: 10px; }
.modal-body { display: grid; gap: 12px; padding: 8px 10px 4px; }
.modal-body label { display: grid; gap: 6px; font-size: 14px; }
.modal-footer { display: flex; gap: 12px; justify-content: flex-end; padding: 12px 10px 8px; }

@media (max-width: 1000px) {
  .dashboard { grid-template-columns: 1fr; }
  .boards { grid-template-columns: 1fr; }
  .card-header { flex-wrap: wrap; }
}