:root {
  --bg: #f4f1ea;
  --ink: #1c1916;
  --muted: #6b645c;
  --paper: #fffcf7;
  --line: #e4ddd2;
  --accent: #c45c26;
  --accent-ink: #fffaf6;
  --ok: #2f6b4f;
  --danger: #b42318;
  --shadow: 0 18px 50px rgba(54, 41, 24, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, #fff8ee 0, transparent 42%),
    linear-gradient(180deg, #f7f3eb 0%, var(--bg) 100%);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.app {
  width: min(640px, calc(100% - 32px));
  margin: 48px auto 80px;
}

.header h1 {
  margin: 0;
  font-size: 2.3rem;
  letter-spacing: -0.04em;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.subtitle {
  margin: 8px 0 0;
  color: var(--muted);
}

.todo-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  margin: 28px 0 18px;
}

.todo-form input,
.todo-item input {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 1rem;
}

.todo-form button,
.actions button {
  border: 0;
  border-radius: 14px;
  padding: 14px 18px;
  font-weight: 700;
  cursor: pointer;
}

.todo-form button {
  background: var(--accent);
  color: var(--accent-ink);
}

.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 10px 12px 12px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 10px 6px;
}

.panel-header h2 {
  margin: 0;
  font-size: 1rem;
}

.count {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.todo-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.todo-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border-top: 1px solid var(--line);
}

.todo-item.done .title {
  color: var(--muted);
  text-decoration: line-through;
}

.title {
  margin: 0;
  word-break: break-word;
}

.actions {
  display: flex;
  gap: 6px;
}

.actions button {
  padding: 8px 12px;
  background: #efe8dc;
  color: var(--ink);
}

.actions .danger {
  color: var(--danger);
}

.empty {
  display: none;
  margin: 0;
  padding: 28px 12px;
  text-align: center;
  color: var(--muted);
}

.empty.visible {
  display: block;
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--ok);
}

@media (max-width: 520px) {
  .todo-form {
    grid-template-columns: 1fr;
  }
}