/* ==========================================================================
   BioTrack Pro — Forms
   Fields, labels, validation states, searchable select, toggles, checkboxes.
   ========================================================================== */

/* ==========================================================================
   Field wrapper
   ========================================================================== */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.field__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  line-height: var(--leading-snug);
}

.field__req {
  color: var(--color-danger);
  font-weight: var(--weight-bold);
}

.field__optional {
  color: var(--color-text-subtle);
  font-weight: var(--weight-regular);
  font-size: var(--text-2xs);
}

.field__hint {
  font-size: var(--text-2xs);
  color: var(--color-text-muted);
  line-height: var(--leading-snug);
}

.field__error {
  font-size: var(--text-2xs);
  color: var(--color-danger);
  font-weight: var(--weight-medium);
  display: flex;
  align-items: flex-start;
  gap: var(--space-1);
  line-height: var(--leading-snug);
}

.field__error .icon { width: 12px; height: 12px; margin-top: 1px; flex-shrink: 0; }

/* ==========================================================================
   Inputs
   ========================================================================== */

.input,
.select,
.textarea {
  width: 100%;
  min-height: 36px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-strong);
  font-size: var(--text-md);
  font-family: inherit;
  transition: var(--transition-colors), var(--transition-shadow);
  appearance: none;
}

.textarea {
  min-height: 84px;
  padding: var(--space-2) var(--space-3);
  line-height: var(--leading-normal);
  resize: vertical;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--color-text-subtle);
}

.input:hover:not(:disabled),
.select:hover:not(:disabled),
.textarea:hover:not(:disabled) {
  border-color: var(--color-text-subtle);
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

.input:disabled,
.select:disabled,
.textarea:disabled {
  background: var(--color-surface-sunk);
  color: var(--color-text-muted);
  cursor: not-allowed;
  border-color: var(--color-border);
}

.input[readonly] {
  background: var(--color-surface-sunk);
  color: var(--color-text-muted);
}

.input--sm { min-height: 30px; font-size: var(--text-sm); padding: 0 var(--space-2); }
.input--lg { min-height: 42px; font-size: var(--text-base); }

.input--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.input--num {
  font-variant-numeric: tabular-nums;
  text-align: right;
}

/* Invalid */
.field.is-invalid .input,
.field.is-invalid .select,
.field.is-invalid .textarea,
.input.is-invalid,
.select.is-invalid {
  border-color: var(--color-danger);
  background: var(--color-danger-bg);
}

.field.is-invalid .input:focus,
.field.is-invalid .select:focus,
.field.is-invalid .textarea:focus {
  box-shadow: 0 0 0 3px var(--color-danger-br);
}

/* Valid confirmation (used sparingly, e.g. unique code check) */
.field.is-valid .input { border-color: var(--color-success); }

/* Select chevron */
.select {
  padding-right: var(--space-8);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236e7787' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 16px;
  cursor: pointer;
}

[data-theme="dark"] .select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2398a1b0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}

/* Date & time inputs — native controls, themed consistently */
input[type="date"],
input[type="time"],
input[type="datetime-local"] {
  cursor: pointer;
}

input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.55;
  transition: opacity var(--duration-fast);
}

input[type="date"]:hover::-webkit-calendar-picker-indicator,
input[type="time"]:hover::-webkit-calendar-picker-indicator { opacity: 1; }

[data-theme="dark"] input[type="date"]::-webkit-calendar-picker-indicator,
[data-theme="dark"] input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(1);
}

/* Input with leading icon or affix */
.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.input-wrap .input { padding-left: 34px; }
.input-wrap--suffix .input { padding-left: var(--space-3); padding-right: 40px; }

.input-wrap__icon {
  position: absolute;
  left: 10px;
  color: var(--color-text-subtle);
  pointer-events: none;
  display: grid;
  place-items: center;
}

.input-wrap__suffix {
  position: absolute;
  right: 10px;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  pointer-events: none;
}

.input-wrap__btn {
  position: absolute;
  right: 4px;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--color-text-muted);
  transition: var(--transition-colors);
}

.input-wrap__btn:hover { background: var(--color-surface-hover); color: var(--color-text); }

/* Currency prefix */
.input-currency { position: relative; }

.input-currency__symbol {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: var(--text-md);
  pointer-events: none;
}

.input-currency .input { padding-left: 26px; text-align: right; font-variant-numeric: tabular-nums; }

/* ==========================================================================
   Form layout
   ========================================================================== */

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.form-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.form-grid .span-2 { grid-column: span 2; }
.form-grid .span-3 { grid-column: span 3; }
.form-grid .span-full { grid-column: 1 / -1; }

.form-section {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-5);
  margin-top: var(--space-5);
}

.form-section:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.form-section__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-strong);
  margin-bottom: var(--space-1);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-section__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.form-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding-top: var(--space-5);
  margin-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.form-actions--sticky {
  position: sticky;
  bottom: 0;
  background: var(--color-surface);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-5) calc(var(--space-5) * -1) calc(var(--space-5) * -1);
  border-top: 1px solid var(--color-border);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  z-index: var(--z-sticky);
  box-shadow: 0 -4px 12px -6px rgba(16, 24, 40, 0.14);
}

/* ==========================================================================
   Checkbox & radio
   ========================================================================== */

.check {
  display: inline-flex;
  align-items: flex-start;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
  font-size: var(--text-md);
  color: var(--color-text);
  line-height: var(--leading-snug);
}

.check input[type="checkbox"],
.check input[type="radio"] {
  appearance: none;
  width: 16px;
  height: 16px;
  margin: 1px 0 0;
  border: 1.5px solid var(--color-border-strong);
  background: var(--color-surface);
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition-colors), var(--transition-shadow);
  position: relative;
}

.check input[type="checkbox"] { border-radius: var(--radius-xs); }
.check input[type="radio"] { border-radius: 50%; }

.check input:hover:not(:disabled) { border-color: var(--color-primary); }

.check input:focus-visible {
  box-shadow: var(--shadow-focus);
  outline: none;
}

.check input[type="checkbox"]:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.check input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 4.5px;
  top: 1px;
  width: 4px;
  height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.check input[type="checkbox"]:indeterminate {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.check input[type="checkbox"]:indeterminate::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 6px;
  width: 8px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
}

.check input[type="radio"]:checked {
  border-color: var(--color-primary);
  border-width: 5px;
}

.check input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--color-surface-sunk);
}

.check__text { min-width: 0; }

.check__desc {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 1px;
}

.check-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.check-group--row {
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* Segmented radio (used for gender, priority, payment mode) */
.segmented {
  display: inline-flex;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

.segmented__opt {
  position: relative;
  display: flex;
}

.segmented__opt input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.segmented__opt span {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 0 var(--space-3);
  height: 34px;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition-colors);
  border-right: 1px solid var(--color-border);
  white-space: nowrap;
  min-width: 60px;
}

.segmented__opt:last-child span { border-right: none; }

.segmented__opt span:hover { background: var(--color-surface-hover); color: var(--color-text); }

.segmented__opt input:checked + span {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: var(--weight-semibold);
}

.segmented__opt input:focus-visible + span {
  box-shadow: inset 0 0 0 2px var(--color-primary);
}

.segmented__opt input:disabled + span {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==========================================================================
   Toggle
   ========================================================================== */

.toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  user-select: none;
}

.toggle input {
  appearance: none;
  width: 36px;
  height: 20px;
  border-radius: var(--radius-full);
  background: var(--color-border-strong);
  position: relative;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-in-out);
  flex-shrink: 0;
}

.toggle input::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-fast) var(--ease-out);
}

.toggle input:checked { background: var(--color-primary); }
.toggle input:checked::after { transform: translateX(16px); }

.toggle input:focus-visible { box-shadow: var(--shadow-focus); outline: none; }

.toggle input:disabled { opacity: 0.5; cursor: not-allowed; }

.toggle__text { font-size: var(--text-md); color: var(--color-text); }

.toggle__desc {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 1px;
}

/* Settings row with toggle */
.setting-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

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

.setting-row__text { flex: 1; min-width: 0; }

.setting-row__label {
  font-size: var(--text-md);
  font-weight: var(--weight-medium);
  color: var(--color-text-strong);
}

.setting-row__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
  max-width: 62ch;
  line-height: var(--leading-snug);
}

.setting-row__control { flex-shrink: 0; }

/* ==========================================================================
   Searchable select
   ========================================================================== */

.ss {
  position: relative;
  width: 100%;
}

.ss__control {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  min-height: 36px;
  padding: 0 var(--space-2) 0 var(--space-3);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  transition: var(--transition-colors), var(--transition-shadow);
  text-align: left;
}

.ss__control:hover { border-color: var(--color-text-subtle); }

.ss.is-open .ss__control,
.ss__control:focus-visible {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
  outline: none;
}

.ss.is-invalid .ss__control {
  border-color: var(--color-danger);
  background: var(--color-danger-bg);
}

.ss__value {
  flex: 1;
  min-width: 0;
  font-size: var(--text-md);
  color: var(--color-text-strong);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ss__value.is-placeholder { color: var(--color-text-subtle); }

.ss__chevron {
  color: var(--color-text-subtle);
  transition: var(--transition-transform);
  flex-shrink: 0;
}

.ss.is-open .ss__chevron { transform: rotate(180deg); }

.ss__clear {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-xs);
  display: grid;
  place-items: center;
  color: var(--color-text-subtle);
  flex-shrink: 0;
  transition: var(--transition-colors);
}

.ss__clear:hover { background: var(--color-surface-hover); color: var(--color-danger); }

.ss__menu {
  position: fixed;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
  display: flex;
  flex-direction: column;
  max-height: 320px;
  overflow: hidden;
  animation: dropdown-in var(--duration-fast) var(--ease-out);
}

.ss__search {
  flex-shrink: 0;
  padding: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.ss__search input {
  width: 100%;
  height: 32px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-sunk);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.ss__search input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-surface);
}

.ss__options {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-1);
}

.ss__option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: left;
  transition: var(--transition-colors);
}

.ss__option:hover,
.ss__option.is-highlighted {
  background: var(--color-surface-hover);
}

.ss__option.is-selected {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: var(--weight-medium);
}

.ss__option-body { flex: 1; min-width: 0; }

.ss__option-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ss__option-sub {
  font-size: var(--text-2xs);
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ss__group {
  padding: var(--space-2) var(--space-3) var(--space-1);
  font-size: var(--text-2xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  color: var(--color-text-subtle);
}

.ss__empty {
  padding: var(--space-4);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.ss__footer {
  flex-shrink: 0;
  border-top: 1px solid var(--color-border);
  padding: var(--space-1);
}

/* ==========================================================================
   Search input (standalone)
   ========================================================================== */

.search-input {
  position: relative;
  width: 100%;
}

.search-input input {
  width: 100%;
  height: 36px;
  padding: 0 34px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: var(--text-md);
  color: var(--color-text);
  transition: var(--transition-colors), var(--transition-shadow);
}

.search-input input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

.search-input__icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-subtle);
  pointer-events: none;
}

.search-input__clear {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: var(--radius-xs);
  display: grid;
  place-items: center;
  color: var(--color-text-subtle);
  transition: var(--transition-colors);
}

.search-input__clear:hover { background: var(--color-surface-hover); color: var(--color-text); }

/* ==========================================================================
   Login page
   ========================================================================== */

.login {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--color-bg);
}

.login__panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-8) var(--space-6);
}

.login__box {
  width: 100%;
  max-width: 400px;
}

.login__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.login__logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  display: grid;
  place-items: center;
  color: #fff;
}

.login__brand-name {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text-strong);
  line-height: 1.2;
}

.login__brand-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.login__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text-strong);
  margin-bottom: var(--space-1);
}

.login__subtitle {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.login__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.login__demo {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.login__demo-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  margin-bottom: var(--space-3);
}

.login__accounts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-2);
}

.login__account {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-align: left;
  transition: var(--transition-colors);
  min-width: 0;
}

.login__account:hover {
  border-color: var(--color-primary-border);
  background: var(--color-primary-soft);
}

.login__account-body { min-width: 0; }

.login__account-role {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-strong);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.login__account-user {
  font-size: var(--text-2xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.login__aside {
  display: none;
  background: var(--color-sidebar-bg);
  color: #fff;
  padding: var(--space-12);
  flex-direction: column;
  justify-content: center;
}

.login__aside-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
  max-width: 18ch;
}

.login__aside-text {
  font-size: var(--text-base);
  color: var(--color-sidebar-fg);
  line-height: var(--leading-relaxed);
  max-width: 46ch;
  margin-bottom: var(--space-8);
}

.login__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.login__feature {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.login__feature-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  color: var(--brand-300);
}

.login__feature-title {
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  color: #fff;
}

.login__feature-desc {
  font-size: var(--text-sm);
  color: var(--color-sidebar-fg);
  margin-top: 2px;
  line-height: var(--leading-snug);
}

@media (min-width: 1024px) {
  .login { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .login__aside { display: flex; }
}