/* ---- controls ---- */
button {
  font: inherit;
  color: inherit;
}
.btn {
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: var(--ink);
  color: var(--ink-text);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition:
    transform 0.12s var(--ease),
    opacity 0.2s,
    background 0.2s,
    border-color 0.2s;
}
.btn:active:not(:disabled) {
  transform: scale(0.97);
}
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover:not(:disabled) {
  border-color: var(--text);
}
.btn-danger {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}
.btn-pill {
  border-radius: 999px;
  padding: 9px 16px;
  font-size: 0.9rem;
}
.btn-small {
  padding: 6px 10px;
  font-size: 0.78rem;
  border-radius: 9px;
  flex-shrink: 0;
}
a.btn {
  text-align: center;
  text-decoration: none;
  display: block;
}
.icon-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  flex-shrink: 0;
  font-size: 1rem;
  transition:
    background 0.2s,
    color 0.2s;
}
.icon-btn:hover {
  color: var(--text);
  background: var(--sunken);
}
.link-btn {
  background: none;
  border: none;
  padding: 4px 0;
  color: var(--muted);
  font-size: 0.82rem;
  cursor: pointer;
  align-self: center;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.link-btn:hover,
.link-btn.danger {
  color: var(--danger);
}
.row {
  display: flex;
  gap: 10px;
}
.row .btn,
.row input {
  flex: 1;
}
.stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

input[type="text"],
input[type="search"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="number"],
textarea,
select {
  width: 100%;
  min-width: 0;
  padding: 11px 13px;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: var(--raised);
  color: var(--text);
  font: inherit;
  font-size: 1rem;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}
/* A checkbox with its sentence next to it. */
label.check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  cursor: pointer;
  font-size: 0.95rem;
}
label.check input {
  flex: none;
  margin-top: 3px;
}
/* Drawn like the text fields, not the browser's grey box: a rounded square
   that fills with the accent and a tick. */
label.check input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: var(--raised);
  cursor: pointer;
  transition:
    background 0.15s var(--ease),
    border-color 0.15s var(--ease);
}
label.check input[type="checkbox"]::after {
  content: "";
  position: absolute;
  left: 5.5px;
  top: 1.5px;
  width: 5px;
  height: 10px;
  border: solid var(--accent-ink);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: transform 0.15s var(--spring);
}
label.check input[type="checkbox"]:hover {
  border-color: var(--accent);
}
label.check input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}
label.check input[type="checkbox"]:checked::after {
  transform: rotate(45deg) scale(1);
}
label.check input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
label.check b {
  font-weight: 600;
  overflow-wrap: anywhere;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--muted);
}

/* Segmented control: the highlight slides to the chosen option. JS sets
   --n (options) and --i (chosen). */
.segmented {
  position: relative;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  background: var(--sunken);
  border-radius: 12px;
  padding: 4px;
}
.segmented::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc((100% - 8px) / var(--n, 2));
  transform: translateX(calc(var(--i, 0) * 100%));
  background: var(--raised);
  border-radius: 9px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  transition: transform 0.3s var(--spring);
}
.segmented button {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 4px;
  font-size: 0.88rem;
  color: var(--muted);
  transition: color 0.2s;
}
.segmented button.active {
  color: var(--text);
  font-weight: 600;
}