/* Kodza — Text Field
   A text field whose label sits inside it, then folds up above the text as soon as you type or
   focus it. A button clears it, a check draws itself once the value is valid, and the hint
   gives way to the error message (from data-error) when it is not, without anything moving.
   A prefix (kodza.dev/) slides in with the label. The clear button stays out of the Tab order
   (from the keyboard, select all and delete), so Tab always leaves the field. Errors are monochrome by default: an icon and
   a message, never colour alone (set --kz-field-error to use a red).
   Everything is tuned with the --kz-field-* variables. */
.kodza-field {
  --kz-field-bg: #ffffff;
  --kz-field-fg: #0a0a0a;
  --kz-field-muted: rgba(10, 10, 10, 0.6);
  --kz-field-line: rgba(10, 10, 10, 0.14);
  --kz-field-line-hover: rgba(10, 10, 10, 0.3);
  --kz-field-focus: #0a0a0a;
  --kz-field-error: #0a0a0a;
  --kz-field-disabled: rgba(10, 10, 10, 0.04);
  --kz-field-height: 56px;
  --kz-field-radius: 12px;
  --kz-field-pad: 16px;
  --kz-field-ease: cubic-bezier(0.22, 1, 0.36, 1);

  position: relative;
  display: grid;
  gap: 8px;
  width: 100%;
  max-width: 420px;
  color: var(--kz-field-fg);
}

/* The box: the whole thing is the label, so a click anywhere focuses the input */
.kodza-field__box {
  position: relative;
  display: flex;
  align-items: flex-end;
  box-sizing: border-box;
  height: var(--kz-field-height);
  padding: 0 var(--kz-field-pad) 9px;
  border-radius: var(--kz-field-radius);
  background: var(--kz-field-bg);
  box-shadow: inset 0 0 0 1px var(--kz-field-line);
  cursor: text;
  transition: box-shadow 0.25s ease;
}

.kodza-field__box:hover {
  box-shadow: inset 0 0 0 1px var(--kz-field-line-hover);
}

.kodza-field__box:focus-within {
  box-shadow: inset 0 0 0 1.5px var(--kz-field-focus), 0 0 0 4px var(--kz-field-disabled);
}

.kodza-field__input {
  flex: 1;
  min-width: 0;
  height: 22px;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  font-size: 15px;
  line-height: 22px;
  outline: none;
}

/* The label: inside the box at rest, folded up above the text once focused or filled */
.kodza-field__label {
  position: absolute;
  top: 50%;
  left: var(--kz-field-pad);
  color: var(--kz-field-muted);
  font-size: 15px;
  line-height: 1;
  white-space: nowrap;
  pointer-events: none;
  transform: translateY(-50%);
  transform-origin: left top;
  transition: transform 0.35s var(--kz-field-ease), color 0.25s ease;
}

.kodza-field__box:focus-within .kodza-field__label,
.kodza-field__input:not(:placeholder-shown) ~ .kodza-field__label {
  color: var(--kz-field-muted);
  transform: translateY(-18px) scale(0.8);
}

/* A prefix waits with the label, then comes in */
.kodza-field__prefix {
  flex: none;
  color: var(--kz-field-muted);
  font-size: 15px;
  line-height: 22px;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.25s ease, transform 0.35s var(--kz-field-ease);
}

.kodza-field__box:focus-within .kodza-field__prefix,
.kodza-field__box:has(.kodza-field__input:not(:placeholder-shown)) .kodza-field__prefix {
  opacity: 1;
  transform: none;
}

/* The check: drawn once the value is valid */
.kodza-field__check {
  position: absolute;
  top: 50%;
  right: var(--kz-field-pad);
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--kz-field-fg);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transform: translateY(-50%);
  transition: stroke-dashoffset 0.4s var(--kz-field-ease);
}

.kodza-field__input[aria-invalid="false"]:not(:placeholder-shown) ~ .kodza-field__check {
  stroke-dashoffset: 0;
  transition-delay: 0.1s;
}

/* The clear button: in when there is something to clear (and no check to show) */
.kodza-field__clear {
  position: absolute;
  top: calc(var(--kz-field-height) / 2 - 14px);
  right: 10px;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--kz-field-disabled);
  color: var(--kz-field-muted);
  white-space: nowrap;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.6);
  visibility: hidden;
  transition: opacity 0.2s ease, transform 0.3s var(--kz-field-ease), visibility 0s linear 0.3s, color 0.2s ease;
}

.kodza-field__clear svg {
  width: 12px;
  height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
}

.kodza-field__clear:hover {
  color: var(--kz-field-fg);
}

.kodza-field:has(.kodza-field__box:focus-within .kodza-field__input:not(:placeholder-shown)) .kodza-field__clear,
.kodza-field:has(.kodza-field__input:not(:placeholder-shown)):focus-within .kodza-field__clear {
  opacity: 1;
  transform: none;
  visibility: visible;
  transition-delay: 0s;
}

/* While the clear button shows, the check steps aside */
.kodza-field:focus-within .kodza-field__check {
  opacity: 0;
}

.kodza-field__clear:focus-visible {
  outline: 2px solid var(--kz-field-focus);
  outline-offset: 2px;
}

/* The note: the hint and the error share one line, and swap */
.kodza-field__note {
  display: grid;
  margin: 0;
  padding: 0 2px;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.4;
}

.kodza-field__hint,
.kodza-field__error {
  grid-area: 1 / 1;
  transition: opacity 0.25s ease, transform 0.4s var(--kz-field-ease);
}

.kodza-field__hint {
  color: var(--kz-field-muted);
}

.kodza-field__error {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--kz-field-error);
  font-weight: 500;
  opacity: 0;
  transform: translateY(100%);
}

.kodza-field__error::before {
  content: "";
  flex: none;
  width: 14px;
  height: 14px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='6.5' fill='none' stroke='black' stroke-width='1.5'/%3E%3Cpath d='M8 4.5v4.2M8 10.9v.1' stroke='black' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='6.5' fill='none' stroke='black' stroke-width='1.5'/%3E%3Cpath d='M8 4.5v4.2M8 10.9v.1' stroke='black' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* Invalid (judged when the visitor leaves the field, then live while they fix it): a firmer
   outline, and the error replaces the hint */
.kodza-field:has(.kodza-field__input[aria-invalid="true"]) .kodza-field__box {
  box-shadow: inset 0 0 0 1.5px var(--kz-field-error);
}

.kodza-field:has(.kodza-field__input[aria-invalid="true"]) .kodza-field__hint {
  opacity: 0;
  transform: translateY(-100%);
}

.kodza-field:has(.kodza-field__input[aria-invalid="true"]) .kodza-field__error {
  opacity: 1;
  transform: none;
}

/* Disabled */
.kodza-field__box:has(.kodza-field__input:disabled) {
  background: var(--kz-field-disabled);
  box-shadow: none;
  color: var(--kz-field-muted);
  cursor: not-allowed;
}

.kodza-field__input:disabled {
  cursor: not-allowed;
}

@media (prefers-reduced-motion: reduce) {
  .kodza-field__box,
  .kodza-field__label,
  .kodza-field__prefix,
  .kodza-field__check,
  .kodza-field__clear,
  .kodza-field__hint,
  .kodza-field__error {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
}

/* Theming example — on a dark background:
.dark-section .kodza-field {
  --kz-field-bg: #161616;
  --kz-field-fg: #f2f2f0;
  --kz-field-muted: rgba(242, 242, 240, 0.62);
  --kz-field-line: rgba(255, 255, 255, 0.14);
  --kz-field-line-hover: rgba(255, 255, 255, 0.3);
  --kz-field-focus: #f2f2f0;
  --kz-field-error: #f2f2f0;
  --kz-field-disabled: rgba(255, 255, 255, 0.06);
}
*/