:root {
  --paper: #eceef4;
  --card: #ffffff;
  --ink: #131a2b;
  --soft: #667089;
  --line: #d5dae5;
  --accent: #3b2fd9;
  --mark: #cdee4b;
  --danger: #b23a48;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  background-image: linear-gradient(var(--line) 1px, transparent 1px);
  background-size: 100% 40px;
  background-position: 0 -1px;
}

.shell {
  width: min(680px, 100% - 2.5rem);
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 5rem) 0 4rem;
}

.masthead { margin-bottom: 2rem; }

.eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--soft);
  margin: 0 0 0.9rem;
}

.masthead h1 {
  font-family: 'Bricolage Grotesque', 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 2.9rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0 0 0.85rem;
}

.tally {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.82rem;
  color: var(--soft);
  margin: 0;
}

.composer {
  display: flex;
  gap: 0.5rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.45rem;
  box-shadow: 0 1px 0 rgba(19, 26, 43, 0.04);
}

.composer input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 0.75rem 0.7rem;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
}

.composer input::placeholder { color: #9aa3b6; }
.composer input:focus { outline: none; }
.composer:focus-within { border-color: var(--accent); }

.composer button {
  flex: none;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0 1.15rem;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease;
}

.composer button:hover { background: #2f24b8; }
.composer button:active { transform: translateY(1px); }

.notice {
  margin: 0.85rem 0 0;
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  background: #fdecef;
  color: var(--danger);
  border: 1px solid #f3ccd3;
  font-size: 0.88rem;
}

.filters {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 1.75rem 0 0.75rem;
}

.filters button {
  border: 1px solid transparent;
  background: transparent;
  color: var(--soft);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  cursor: pointer;
}

.filters button:hover { color: var(--ink); }

.filters button.is-on {
  background: var(--ink);
  color: #fff;
}

.filters .clear {
  margin-left: auto;
  color: var(--soft);
}

.filters .clear:hover { color: var(--danger); }

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  animation: rise 0.22s ease both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.check {
  flex: none;
  width: 22px;
  height: 22px;
  border: 2px solid var(--ink);
  border-radius: 7px;
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.check::after {
  content: '';
  width: 10px;
  height: 6px;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg) scale(0.4);
  opacity: 0;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.row.done .check { background: var(--mark); border-color: var(--mark); }
.row.done .check::after { opacity: 1; transform: rotate(-45deg) scale(1); }

.label {
  flex: 1;
  min-width: 0;
  position: relative;
  font-size: 1rem;
  line-height: 1.4;
  word-break: break-word;
  transition: color 0.2s ease;
}

.label::after {
  content: '';
  position: absolute;
  left: -2px;
  right: -2px;
  top: 52%;
  height: 2px;
  background: var(--soft);
  border-radius: 2px;
  transform: scaleX(0) rotate(-0.6deg);
  transform-origin: left center;
  transition: transform 0.28s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.row.done .label { color: var(--soft); }
.row.done .label::after { transform: scaleX(1) rotate(-0.6deg); }

.stamp {
  flex: none;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.7rem;
  color: #9aa3b6;
}

.remove {
  flex: none;
  border: 0;
  background: transparent;
  color: #9aa3b6;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0.3rem 0.4rem;
  border-radius: 8px;
  cursor: pointer;
}

.remove:hover { color: var(--danger); background: #fdecef; }

.empty {
  margin: 2.5rem 0;
  text-align: center;
  color: var(--soft);
  font-size: 0.95rem;
}

.colophon {
  margin-top: 3rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #9aa3b6;
  display: flex;
  gap: 0.5rem;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

@media (max-width: 480px) {
  .composer { flex-wrap: wrap; }
  .composer button { width: 100%; padding: 0.75rem; }
  .stamp { display: none; }
}