/* ============================================================
   Bitkoning Master Brand — Forms
   .bk-input, .bk-select, .bk-check, .bk-radio, .bk-toggle, .bk-field, .bk-textarea.
   Gegenereerd uit het master brand guidelines document (v2.0).
   Productie-bron. De master HTML demonstreert deze classes inline.
   ============================================================ */

.bk-input-hero {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--bk-ink-4);
  padding: var(--bk-space-2) 0;
  padding-bottom: var(--bk-space-2);
  font-family: var(--bk-font-sans);
  font-size: 20px;
  color: var(--bk-ink-8);
  outline: none;
  transition: border-color 120ms ease;
}

.bk-input-hero::placeholder { color: var(--bk-ink-5); }

.bk-input-hero:hover { border-bottom-color: var(--bk-ink-5); }

.bk-input-hero:focus {
  border-bottom: 2px solid var(--bk-green-base);
  padding-bottom: calc(var(--bk-space-2) - 2px);
}

.bk-field {
  display: flex;
  flex-direction: column;
  gap: var(--bk-space-2);
  margin-bottom: var(--bk-space-4);
}

.bk-field:last-child { margin-bottom: 0; }

.bk-field__label {
  font-family: var(--bk-font-sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--bk-ink-7);
}

.bk-field__error {
  font-size: 12px;
  color: var(--bk-red-hover);
  margin-top: 2px;
}

.bk-input {
  width: 100%;
  background: var(--bk-ink-1);
  border: 1px solid var(--bk-ink-4);
  border-radius: 6px;
  padding: 12px 16px;
  font-family: var(--bk-font-sans);
  font-size: 14px;
  color: var(--bk-ink-8);
  outline: none;
  transition: border-color 120ms ease, background-color 120ms ease;
}

.bk-input::placeholder { color: var(--bk-ink-5); }

.bk-input:hover { border-color: var(--bk-ink-5); }

.bk-input:focus {
  border: 1px solid var(--bk-green-base);
  padding: 12px 16px;
}

.bk-input.is-error {
  border-color: var(--bk-red-base);
  border-width: 1px;
  padding: 12px 16px;
}

.bk-input.is-success {
  border-color: var(--bk-green-base);
  border-width: 1px;
  padding: 12px 48px 12px 16px;
}

.bk-input-with-icon {
  position: relative;
}

.bk-input-with-icon__check {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--bk-green-base);
  font-size: 16px;
  font-weight: 800;
  pointer-events: none;
}

.bk-input:disabled {
  background: var(--bk-ink-2);
  color: var(--bk-ink-5);
  border-color: var(--bk-ink-3);
  cursor: not-allowed;
}

.bk-textarea {
  resize: vertical;
  min-height: 70px;
  font-family: var(--bk-font-sans);
  line-height: 1.5;
}

.bk-select-wrap {
  position: relative;
}

.bk-select {
  width: 100%;
  background: var(--bk-ink-1);
  border: 1px solid var(--bk-ink-4);
  border-radius: 6px;
  padding: 12px 32px 12px 16px;
  font-family: var(--bk-font-sans);
  font-size: 14px;
  color: var(--bk-ink-8);
  outline: none;
  appearance: none;
  cursor: pointer;
  transition: border-color 120ms ease;
}

.bk-select:hover { border-color: var(--bk-ink-5); }

.bk-select:focus {
  border: 1px solid var(--bk-green-base);
  padding: 12px 32px 12px 16px;
}

.bk-select-wrap::after {
  content: "▾";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--bk-ink-5);
  pointer-events: none;
  font-size: 12px;
}

.bk-check {
  display: flex;
  align-items: center;
  gap: var(--bk-space-3);
  cursor: pointer;
  font-size: 14px;
  color: var(--bk-ink-7);
  user-select: none;
}

.bk-check input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.bk-check__box {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--bk-ink-5);
  border-radius: 4px;
  background: transparent;
  flex-shrink: 0;
  position: relative;
  transition: border-color 120ms ease, background-color 120ms ease;
}

.bk-check input:checked + .bk-check__box {
  border-color: var(--bk-green-base);
  background: var(--bk-green-base);
}

.bk-check input:checked + .bk-check__box::after {
  content: "✓";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bk-on-green);
  font-size: 14px;
  font-weight: 800;
}

.bk-check input:focus-visible + .bk-check__box {
  outline: 2px solid var(--bk-blue-base);
  outline-offset: 2px;
}

.bk-check input:checked ~ .bk-check__label {
  color: var(--bk-ink-8);
}

.bk-radio {
  display: flex;
  align-items: center;
  gap: var(--bk-space-3);
  cursor: pointer;
  font-size: 14px;
  color: var(--bk-ink-7);
  user-select: none;
}

.bk-radio input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.bk-radio__circle {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--bk-ink-5);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  transition: border-color 120ms ease;
}

.bk-radio input:checked + .bk-radio__circle {
  border-color: var(--bk-green-base);
}

.bk-radio input:checked + .bk-radio__circle::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--bk-green-base);
}

.bk-radio input:focus-visible + .bk-radio__circle {
  outline: 2px solid var(--bk-blue-base);
  outline-offset: 2px;
}

.bk-radio input:checked ~ .bk-radio__label {
  color: var(--bk-ink-8);
}

.bk-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--bk-space-4);
  padding: var(--bk-space-3) 0;
  border-bottom: 0.5px solid var(--bk-ink-2);
}

.bk-toggle-row:last-child { border-bottom: none; }

.bk-toggle-row__text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.bk-toggle-row__title {
  font-size: 14px;
  color: var(--bk-ink-8);
  font-weight: 500;
}

.bk-toggle-row__desc {
  font-size: 12px;
  color: var(--bk-ink-6);
}

.bk-toggle {
  position: relative;
  display: inline-block;
  flex-shrink: 0;
  cursor: pointer;
}

.bk-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.bk-toggle__track {
  display: block;
  width: 36px;
  height: 20px;
  border-radius: 999px;
  background: var(--bk-ink-3);
  position: relative;
  transition: background-color 200ms ease;
}

.bk-toggle__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bk-ink-7);
  transition: transform 200ms ease, background-color 200ms ease;
}

.bk-toggle input:checked + .bk-toggle__track {
  background: var(--bk-green-base);
}

.bk-toggle input:checked + .bk-toggle__track .bk-toggle__thumb {
  transform: translateX(16px);
  background: var(--bk-on-green);
}

.bk-toggle input:focus-visible + .bk-toggle__track {
  outline: 2px solid var(--bk-blue-base);
  outline-offset: 2px;
}