:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --card: #1e293b;
  --text: #f8fafc;
  --muted: #94a3b8;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #38bdf8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  font-family: system-ui, sans-serif;
  background: radial-gradient(circle at top, #1e3a5f, var(--bg));
  color: var(--text);
}

.card {
  width: min(28rem, 100%);
  padding: 1.75rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--card);
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 1rem;
  font-size: 1.75rem;
}

form {
  display: flex;
  gap: 0.5rem;
}

input,
button {
  font: inherit;
}

input {
  flex: 1;
  min-width: 0;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: rgba(15, 23, 42, 0.45);
  color: var(--text);
}

button {
  border: 0;
  border-radius: 0.6rem;
  background: var(--accent);
  color: #0f172a;
  cursor: pointer;
  padding: 0.65rem 0.9rem;
  font-weight: 600;
}

button:hover {
  filter: brightness(1.05);
}

.toolbar {
  display: flex;
  gap: 0.4rem;
  margin: 1rem 0 0.75rem;
}

.filter,
#clear-done {
  background: transparent;
  color: var(--muted);
  font-weight: 500;
  padding: 0.35rem 0.7rem;
}

.filter.is-active {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent);
}

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

.item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--line);
}

.item input {
  flex: 0 0 auto;
  width: 1rem;
  height: 1rem;
  accent-color: var(--accent);
}

.item button.label {
  flex: 1;
  min-width: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  font-weight: 400;
  text-align: left;
  overflow-wrap: anywhere;
  cursor: text;
}

.item input.edit {
  flex: 1;
  width: auto;
  height: auto;
  padding: 0.35rem 0.5rem;
}

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

.delete {
  background: transparent;
  color: var(--muted);
  padding: 0.2rem 0.45rem;
  font-weight: 500;
}

.empty,
.status {
  color: var(--muted);
  font-size: 0.9rem;
}

.empty {
  margin: 0.5rem 0 0;
}

.status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.75rem;
}

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