:root {
  --bg: #f5f5f0;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --border: #d8d8d0;
  --accent: #1f6b3a;
  --accent-text: #ffffff;
  --danger: #a4271f;
  --checked-bg: #e4ede4;
  --tap: 48px;
}

:root.hc {
  --bg: #000000;
  --surface: #000000;
  --text: #ffffff;
  --muted: #ffffff;
  --border: #ffffff;
  --accent: #ffe600;
  --accent-text: #000000;
  --danger: #ff4d4d;
  --checked-bg: #1a1a1a;
}

* {
  box-sizing: border-box;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.4;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: var(--accent-text);
}

.topbar h1 {
  font-size: 1.25rem;
  margin: 0;
}

.icon-btn {
  min-width: var(--tap);
  min-height: var(--tap);
  border: 2px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: inherit;
  font-size: 1.25rem;
  cursor: pointer;
}

.icon-btn:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.app {
  flex: 1;
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 1rem 1rem 5.5rem;
}

.bottomnav {
  position: sticky;
  bottom: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--surface);
  border-top: 2px solid var(--border);
}

.bottomnav a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap);
  padding: 0.75rem 0.25rem;
  text-align: center;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  border-top: 3px solid transparent;
}

.bottomnav a.active {
  border-top-color: var(--accent);
  font-weight: 700;
  color: var(--accent);
}
:root.hc .bottomnav a.active {
  color: var(--text);
  background: var(--accent);
  color: var(--accent-text);
}

h2 {
  font-size: 1.1rem;
  margin: 1.25rem 0 0.5rem;
}
h2:first-child {
  margin-top: 0;
}

.category-group {
  margin-bottom: 1rem;
}

.list-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: var(--tap);
  padding: 0.6rem 0.75rem;
  margin-bottom: 0.5rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 10px;
}

.list-row .name {
  flex: 1;
  font-size: 1.05rem;
}
.list-row .qty {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

button {
  font: inherit;
}

.btn {
  min-height: var(--tap);
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  border: 2px solid var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 700;
  cursor: pointer;
}
.btn.secondary {
  background: transparent;
  color: var(--accent);
}
.btn.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}
.btn.block {
  width: 100%;
  display: block;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* --- Shopping mode --- */

.shop-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-height: 56px;
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.6rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  user-select: none;
}
.shop-row .box {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 2px solid var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: var(--accent);
}
.shop-row.checked {
  background: var(--checked-bg);
}
.shop-row.checked .box {
  background: var(--accent);
  color: var(--accent-text);
}
.shop-row.checked .name {
  text-decoration: line-through;
  color: var(--muted);
}
.shop-row .name {
  flex: 1;
  font-size: 1.1rem;
}
.shop-row .qty {
  color: var(--muted);
  font-size: 0.95rem;
}
.shop-row .remove-btn {
  min-width: var(--tap);
  min-height: var(--tap);
  border: none;
  background: transparent;
  color: var(--danger);
  font-size: 1.2rem;
}

.sticky-footer {
  position: sticky;
  bottom: calc(var(--tap) + 0.5rem);
  padding-top: 0.75rem;
}

/* --- Forms --- */

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
}
.field label {
  font-size: 0.9rem;
  color: var(--muted);
}
input[type="text"],
input[type="number"],
select {
  min-height: var(--tap);
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}

.select-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: var(--tap);
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.5rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 10px;
}
.select-row input[type="checkbox"] {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}
.select-row .name {
  flex: 1;
}
.select-row input[type="number"] {
  width: 4.5rem;
  min-height: 40px;
}

.empty {
  color: var(--muted);
  padding: 2rem 0.5rem;
  text-align: center;
}

.history-row {
  display: block;
  padding: 0.85rem 1rem;
  margin-bottom: 0.5rem;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
}
.history-row .date {
  font-weight: 700;
}
.history-row .meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.readonly-banner {
  background: var(--checked-bg);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.85rem;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--tap) + 1rem);
  transform: translateX(-50%) translateY(8px);
  background: var(--text);
  color: var(--bg);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  z-index: 20;
}
.toast.show {
  opacity: 1;
}