/* =========================================================
   Captain's Toolkit
   Forms System
   ========================================================= */

/* ---------- Form layout ---------- */

.form-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}

.form-row,
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.form-row-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.form-row-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.form-row-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}

.form-grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-4);
}

.form-col-12 {
  grid-column: span 12;
}

.form-col-8 {
  grid-column: span 8;
}

.form-col-6 {
  grid-column: span 6;
}

.form-col-4 {
  grid-column: span 4;
}

.form-col-3 {
  grid-column: span 3;
}

.inline-fields {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.inline-fields > * {
  min-width: 0;
}

.inline-form {
  display: flex;
  align-items: end;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.inline-form .form-group {
  flex: 1 1 180px;
}

/* ---------- Labels / text ---------- */

.form-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
}

.form-label-required::after,
.form-label .required {
  content: "*";
  color: var(--color-red);
  font-weight: 900;
}

.form-hint,
.help-text {
  font-size: var(--text-xs);
  color: var(--color-muted);
  line-height: 1.5;
}

.form-error,
.error-text {
  display: none;
  font-size: var(--text-xs);
  color: var(--color-red);
  font-weight: 800;
  line-height: 1.45;
}

.form-group.is-invalid .form-error,
.form-group.is-invalid .error-text,
.input[aria-invalid="true"] ~ .form-error,
.select[aria-invalid="true"] ~ .form-error,
.textarea[aria-invalid="true"] ~ .form-error,
.form-control[aria-invalid="true"] ~ .form-error {
  display: block;
}

.form-success,
.success-text {
  font-size: var(--text-xs);
  color: var(--color-green);
  font-weight: 800;
  line-height: 1.45;
}

/* ---------- Base controls ---------- */

.input,
.select,
.textarea,
.form-control {
  width: 100%;
  border: 1px solid var(--color-border);
  background: #ffffff;
  color: var(--color-text);
  font: inherit;
  outline: none;
  box-shadow: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast),
    color var(--transition-fast),
    opacity var(--transition-fast);
}

.input,
.select,
.form-control {
  min-height: 48px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-md);
}

.textarea,
textarea.form-control {
  min-height: 140px;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  resize: vertical;
  line-height: var(--leading-relaxed);
}

.textarea-sm {
  min-height: 96px;
}

.textarea-lg {
  min-height: 220px;
}

.input-sm,
.select-sm,
.form-control-sm {
  min-height: 40px;
  padding-inline: var(--space-3);
  font-size: var(--text-sm);
}

.input-lg,
.select-lg,
.form-control-lg {
  min-height: 56px;
  padding-inline: var(--space-5);
  font-size: var(--text-base);
}

.input::placeholder,
.textarea::placeholder,
.form-control::placeholder {
  color: var(--color-muted-light);
}

.input:hover,
.select:hover,
.textarea:hover,
.form-control:hover {
  border-color: rgba(37, 99, 235, 0.32);
}

.input:focus,
.select:focus,
.textarea:focus,
.form-control:focus {
  border-color: rgba(37, 99, 235, 0.72);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.input:disabled,
.select:disabled,
.textarea:disabled,
.form-control:disabled,
.input[readonly],
.textarea[readonly],
.form-control[readonly] {
  background: #eef2f7;
  color: var(--color-muted);
  cursor: not-allowed;
  opacity: 0.85;
}

.input[readonly],
.textarea[readonly],
.form-control[readonly] {
  cursor: default;
}

/* ---------- Field states ---------- */

.form-group.is-invalid .input,
.form-group.is-invalid .select,
.form-group.is-invalid .textarea,
.form-group.is-invalid .form-control,
.input.is-invalid,
.select.is-invalid,
.textarea.is-invalid,
.form-control.is-invalid,
.input[aria-invalid="true"],
.select[aria-invalid="true"],
.textarea[aria-invalid="true"],
.form-control[aria-invalid="true"] {
  border-color: rgba(220, 38, 38, 0.75);
  background: rgba(254, 242, 242, 0.9);
}

.form-group.is-invalid .input:focus,
.form-group.is-invalid .select:focus,
.form-group.is-invalid .textarea:focus,
.form-group.is-invalid .form-control:focus,
.input.is-invalid:focus,
.select.is-invalid:focus,
.textarea.is-invalid:focus,
.form-control.is-invalid:focus,
.input[aria-invalid="true"]:focus,
.select[aria-invalid="true"]:focus,
.textarea[aria-invalid="true"]:focus,
.form-control[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.14);
}

.form-group.is-valid .input,
.form-group.is-valid .select,
.form-group.is-valid .textarea,
.form-group.is-valid .form-control,
.input.is-valid,
.select.is-valid,
.textarea.is-valid,
.form-control.is-valid {
  border-color: rgba(22, 163, 74, 0.65);
}

.form-group.is-valid .input:focus,
.form-group.is-valid .select:focus,
.form-group.is-valid .textarea:focus,
.form-group.is-valid .form-control:focus,
.input.is-valid:focus,
.select.is-valid:focus,
.textarea.is-valid:focus,
.form-control.is-valid:focus {
  box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.12);
}

/* ---------- Select ---------- */

.select,
select.form-control {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--color-muted) 50%),
    linear-gradient(135deg, var(--color-muted) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) calc(50% - 2px),
    calc(100% - 12px) calc(50% - 2px);
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 44px;
}

.select:disabled,
select.form-control:disabled {
  background-image:
    linear-gradient(45deg, transparent 50%, var(--color-muted-light) 50%),
    linear-gradient(135deg, var(--color-muted-light) 50%, transparent 50%);
}

/* ---------- Input with icons ---------- */

.input-icon-wrap {
  position: relative;
}

.input-icon {
  position: absolute;
  top: 50%;
  left: var(--space-4);
  transform: translateY(-50%);
  color: var(--color-muted);
  pointer-events: none;
  line-height: 1;
}

.input-icon-wrap .input,
.input-icon-wrap .form-control {
  padding-left: 44px;
}

.input-action {
  position: absolute;
  top: 50%;
  right: var(--space-2);
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
}

.input-action:hover {
  background: rgba(15, 23, 42, 0.06);
  color: var(--color-text);
}

.input-icon-wrap .input.has-action,
.input-icon-wrap .form-control.has-action {
  padding-right: 48px;
}

/* ---------- Search ---------- */

.search-input {
  position: relative;
}

.search-input .input,
.search-input .form-control {
  padding-left: 46px;
}

.search-input::before {
  content: "⌕";
  position: absolute;
  top: 50%;
  left: var(--space-4);
  transform: translateY(-50%);
  color: var(--color-muted);
  font-size: 1rem;
  pointer-events: none;
  z-index: 1;
}

/* ---------- Checkbox / radio ---------- */

.checkbox-group,
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checkbox-group.inline,
.radio-group.inline {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
}

.checkbox,
.radio {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  min-width: 0;
}

.checkbox input,
.radio input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex: 0 0 auto;
  accent-color: var(--color-blue);
  cursor: pointer;
}

.checkbox input:focus-visible,
.radio input:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.22);
  outline-offset: 2px;
}

.checkbox label,
.radio label {
  flex: 1;
  cursor: pointer;
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.45;
}

.checkbox-card,
.radio-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: #ffffff;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}

.checkbox-card:hover,
.radio-card:hover {
  border-color: rgba(37, 99, 235, 0.28);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
}

.checkbox-card input,
.radio-card input {
  margin-top: 2px;
  accent-color: var(--color-blue);
}

.checkbox-card-content,
.radio-card-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.checkbox-card-title,
.radio-card-title {
  font-size: var(--text-sm);
  font-weight: 900;
  color: var(--color-text);
  line-height: 1.3;
}

.checkbox-card-text,
.radio-card-text {
  font-size: var(--text-xs);
  color: var(--color-muted);
  line-height: 1.5;
}

/* ---------- Switch ---------- */

.switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

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

.switch-track {
  position: relative;
  width: 52px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: var(--radius-full);
  background: #d8e0ea;
  transition:
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.switch-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.14);
  transition: transform var(--transition-fast);
}

.switch input:checked + .switch-track {
  background: var(--color-blue);
}

.switch input:checked + .switch-track::after {
  transform: translateX(22px);
}

.switch input:focus-visible + .switch-track {
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.16);
}

.switch input:disabled + .switch-track,
.switch input:disabled ~ .switch-label {
  opacity: 0.6;
  cursor: not-allowed;
}

.switch-label {
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.4;
}

/* ---------- Fieldset ---------- */

.fieldset {
  margin: 0;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.68);
}

.fieldset legend {
  padding: 0 var(--space-2);
  font-size: var(--text-sm);
  font-weight: 900;
  color: var(--color-text);
}

.fieldset-description {
  margin: 0 0 var(--space-4);
  color: var(--color-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

/* ---------- Actions ---------- */

.form-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: 1rem;
}

.form-actions-between {
  justify-content: space-between;
}

.form-actions-right {
  justify-content: flex-end;
}

.form-actions-sticky {
  position: sticky;
  bottom: 0;
  z-index: 20;
  margin-inline: calc(var(--space-4) * -1);
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

/* ---------- Loading states ---------- */

.form-loading,
.form-group.is-loading {
  position: relative;
  pointer-events: none;
}

.form-loading::after,
.form-group.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.5);
  cursor: wait;
}

.input.is-loading,
.select.is-loading,
.textarea.is-loading,
.form-control.is-loading {
  background-image: linear-gradient(
    90deg,
    rgba(226, 232, 240, 0.65),
    rgba(248, 250, 252, 0.95),
    rgba(226, 232, 240, 0.65)
  );
  background-size: 200% 100%;
  animation: form-loading-shimmer 1.2s linear infinite;
}

@keyframes form-loading-shimmer {
  from {
    background-position: 200% 0;
  }

  to {
    background-position: -200% 0;
  }
}

/* ---------- Compact filters ---------- */

.filter-bar,
.filter-row,
.search-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.filter-bar .form-group,
.filter-row .form-group,
.search-row .form-group {
  flex: 1 1 160px;
}

.filter-bar .input,
.filter-bar .select,
.filter-bar .form-control,
.filter-row .input,
.filter-row .select,
.filter-row .form-control,
.search-row .input,
.search-row .select,
.search-row .form-control {
  min-height: 42px;
}

/* ---------- File input ---------- */

.file-input {
  display: block;
  width: 100%;
  padding: var(--space-4);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(248, 250, 252, 0.8);
  color: var(--color-muted);
  font-size: var(--text-sm);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    color var(--transition-fast);
}

.file-input:hover {
  border-color: rgba(37, 99, 235, 0.42);
  background: rgba(239, 246, 255, 0.78);
  color: var(--color-text);
}

/* ---------- Date / number polish ---------- */

.input[type="date"],
.input[type="time"],
.input[type="datetime-local"],
.input[type="number"],
.form-control[type="date"],
.form-control[type="time"],
.form-control[type="datetime-local"],
.form-control[type="number"] {
  line-height: normal;
}

.input[type="number"],
.form-control[type="number"] {
  appearance: textfield;
}

.input[type="number"]::-webkit-outer-spin-button,
.input[type="number"]::-webkit-inner-spin-button,
.form-control[type="number"]::-webkit-outer-spin-button,
.form-control[type="number"]::-webkit-inner-spin-button {
  margin: 0;
  appearance: none;
}

/* ---------- Tablet ---------- */

@media (max-width: 920px) {
  .form-row-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-grid-12 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .form-col-8,
  .form-col-6,
  .form-col-4,
  .form-col-3 {
    grid-column: span 6;
  }
}

/* ---------- Mobile ---------- */

@media (max-width: 720px) {
  .form-section {
    gap: var(--space-4);
  }

  .form-row,
  .form-row-2,
  .form-row-3,
  .form-row-4,
  .form-grid,
  .form-grid-12 {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .form-col-12,
  .form-col-8,
  .form-col-6,
  .form-col-4,
  .form-col-3 {
    grid-column: auto;
  }

  .fieldset {
    padding: var(--space-4);
  }

  .form-actions,
  .form-actions-right,
  .form-actions-between {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
  }

  .form-actions .button,
  .form-actions .btn,
  .form-actions button {
    width: 100%;
  }

  .inline-fields,
  .inline-form,
  .filter-bar,
  .filter-row,
  .search-row {
    flex-direction: column;
    align-items: stretch;
  }

  .inline-form .form-group,
  .filter-bar .form-group,
  .filter-row .form-group,
  .search-row .form-group {
    flex: 1 1 auto;
    width: 100%;
  }

  .checkbox-group.inline,
  .radio-group.inline {
    flex-direction: column;
    align-items: stretch;
  }

  .input,
  .select,
  .form-control {
    min-height: 50px;
    font-size: 16px;
  }

  .textarea,
  textarea.form-control {
    font-size: 16px;
  }

  .form-actions-sticky {
    margin-inline: calc(var(--space-3) * -1);
    padding: var(--space-3);
    padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom));
  }

  .switch {
    align-items: flex-start;
  }
}

@media (max-width: 420px) {
  .fieldset {
    padding: var(--space-3);
  }

  .checkbox-card,
  .radio-card,
  .file-input {
    padding: var(--space-3);
  }
}