/* 
 * CORE MH FORMS SYSTEM
 * Estilos para formularios, inputs, selects y elementos de formulario
 * Compatible con Bootstrap 5.3
 */

/* ===== FORM CONTAINERS ===== */
.core-form {
  margin-bottom: var(--space-6);
}

.core-form-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.core-form-col {
  flex: 1;
  min-width: 200px;
}

.core-form-col-full {
  width: 100%;
}

.core-form-col-half {
  width: calc(50% - var(--space-2));
}

@media (max-width: 640px) {
  .core-form-col,
  .core-form-col-half {
    width: 100%;
  }
}

/* ===== LABELS ===== */
.form-label,
.core-form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: 0.025em;
  line-height: var(--leading-normal);
}

.form-label.required::after,
.core-form-label.required::after {
  content: '*';
  color: var(--color-error);
  margin-left: var(--space-1);
}

/* ===== INPUTS BASE ===== */
.form-control,
.core-form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-base);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--color-white);
  transition: all var(--duration-normal) var(--ease-out);
  font-family: var(--font-family);
  line-height: var(--leading-normal);
}

.form-control:focus,
.core-form-input:focus {
  outline: none;
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(7, 41, 91, 0.1);
  background: var(--color-white);
}

.form-control::placeholder,
.core-form-input::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

.form-control:disabled,
.core-form-input:disabled {
  background: var(--bg-muted);
  color: var(--text-muted);
  cursor: not-allowed;
  border-color: var(--border-light);
}

/* ===== TEXTAREAS ===== */
.form-control[rows],
textarea.form-control,
textarea.core-form-input {
  min-height: 100px;
  resize: vertical;
  line-height: var(--leading-relaxed);
}

/* ===== SELECTS ===== */
.form-select,
.core-form-select {
  width: 100%;
  padding: var(--space-3) var(--space-10) var(--space-3) var(--space-4);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-base);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--color-white);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  appearance: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.form-select:focus,
.core-form-select:focus {
  outline: none;
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(7, 41, 91, 0.1);
}

.form-select:disabled,
.core-form-select:disabled {
  background: var(--bg-muted);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* ===== CHECKBOXES ===== */
.form-check {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.form-check-input,
.core-checkbox {
  width: 18px;
  height: 18px;
  margin-right: var(--space-3);
  margin-top: 2px;
  border: 2px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.form-check-input:checked,
.core-checkbox:checked {
  background: var(--color-navy);
  border-color: var(--color-navy);
  background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='m13.854 3.646-7.5 7.5a.5.5 0 0 1-.708 0l-3.5-3.5a.5.5 0 1 1 .708-.708L6 10.293l7.146-7.147a.5.5 0 0 1 .708.708z'/%3e%3c/svg%3e");
}

.form-check-input:focus,
.core-checkbox:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(7, 41, 91, 0.1);
}

.form-check-label,
.core-checkbox-label {
  font-size: var(--text-sm);
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
  line-height: var(--leading-normal);
}

/* ===== RADIO BUTTONS ===== */
.form-check-input[type="radio"],
.core-radio {
  border-radius: var(--radius-full);
}

.form-check-input[type="radio"]:checked,
.core-radio:checked {
  background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3ccircle cx='8' cy='8' r='3'/%3e%3c/svg%3e");
}

/* ===== SWITCHES / TOGGLES ===== */
.form-switch .form-check-input,
.core-switch {
  width: 44px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--border-default);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
}

.form-switch .form-check-input::before,
.core-switch::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-sm);
}

.form-switch .form-check-input:checked,
.core-switch:checked {
  background: var(--color-navy);
  background-image: none;
}

.form-switch .form-check-input:checked::before,
.core-switch:checked::before {
  transform: translateX(20px);
}

.form-switch .form-check-input:focus,
.core-switch:focus {
  box-shadow: 0 0 0 3px rgba(7, 41, 91, 0.1);
}

/* ===== FILE INPUTS ===== */
.form-control[type="file"],
.core-file-input {
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
}

.form-control[type="file"]::-webkit-file-upload-button,
.core-file-input::-webkit-file-upload-button {
  background: var(--bg-muted);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  margin-right: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.form-control[type="file"]::-webkit-file-upload-button:hover,
.core-file-input::-webkit-file-upload-button:hover {
  background: var(--border-light);
}

/* ===== DRAG & DROP FILE ZONE ===== */
.core-file-drop {
  border: 2px dashed var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  text-align: center;
  background: var(--bg-muted);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.core-file-drop:hover,
.core-file-drop.dragover {
  border-color: var(--color-navy);
  background: rgba(7, 41, 91, 0.02);
}

.core-file-drop-icon {
  font-size: var(--text-4xl);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.core-file-drop-text {
  color: var(--text-secondary);
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
}

.core-file-drop-hint {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ===== RANGE INPUTS ===== */
.form-range,
.core-range {
  width: 100%;
  height: 6px;
  background: var(--border-light);
  border-radius: var(--radius-full);
  outline: none;
  appearance: none;
  cursor: pointer;
}

.form-range::-webkit-slider-thumb,
.core-range::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--color-navy);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.form-range::-webkit-slider-thumb:hover,
.core-range::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  box-shadow: 0 0 0 8px rgba(7, 41, 91, 0.1);
}

.form-range::-moz-range-thumb,
.core-range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--color-navy);
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
}

/* ===== FORM GROUPS ===== */
.core-form-group {
  margin-bottom: var(--space-5);
}

.core-form-group:last-child {
  margin-bottom: 0;
}

.core-form-group-inline {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

@media (max-width: 640px) {
  .core-form-group-inline {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ===== INPUT GROUPS ===== */
.input-group,
.core-input-group {
  display: flex;
  align-items: center;
}

.input-group .form-control,
.core-input-group .core-form-input {
  border-radius: 0;
}

.input-group .form-control:first-child,
.core-input-group .core-form-input:first-child {
  border-top-left-radius: var(--radius-base);
  border-bottom-left-radius: var(--radius-base);
}

.input-group .form-control:last-child,
.core-input-group .core-form-input:last-child {
  border-top-right-radius: var(--radius-base);
  border-bottom-right-radius: var(--radius-base);
}

.input-group-text,
.core-input-addon {
  padding: var(--space-3) var(--space-4);
  background: var(--bg-muted);
  border: 2px solid var(--border-light);
  color: var(--text-secondary);
  font-size: var(--text-base);
  white-space: nowrap;
  border-left: 0;
}

.input-group-text:first-child,
.core-input-addon:first-child {
  border-left: 2px solid var(--border-light);
  border-top-left-radius: var(--radius-base);
  border-bottom-left-radius: var(--radius-base);
  border-right: 0;
}

.input-group-text:last-child,
.core-input-addon:last-child {
  border-top-right-radius: var(--radius-base);
  border-bottom-right-radius: var(--radius-base);
}

/* ===== VALIDATION STATES ===== */
.is-valid,
.core-form-input.valid {
  border-color: var(--color-success);
}

.is-valid:focus,
.core-form-input.valid:focus {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.is-invalid,
.core-form-input.error {
  border-color: var(--color-error);
}

.is-invalid:focus,
.core-form-input.error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(154, 29, 49, 0.1);
}

.valid-feedback,
.core-form-success {
  display: block;
  color: var(--color-success);
  font-size: var(--text-xs);
  margin-top: var(--space-1);
}

.invalid-feedback,
.core-form-error {
  display: block;
  color: var(--color-error);
  font-size: var(--text-xs);
  margin-top: var(--space-1);
}

/* ===== FORM TEXT / HELP ===== */
.form-text,
.core-form-help {
  color: var(--text-muted);
  font-size: var(--text-xs);
  margin-top: var(--space-1);
  line-height: var(--leading-normal);
}

/* ===== FIELDSETS Y LEGENDS ===== */
fieldset {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-5);
}

legend {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  padding: 0 var(--space-3);
  margin-bottom: var(--space-4);
}

/* ===== FORM FLOATING LABELS ===== */
.form-floating,
.core-floating {
  position: relative;
}

.form-floating > .form-control,
.core-floating > .core-form-input {
  padding: var(--space-5) var(--space-4) var(--space-2);
}

.form-floating > label,
.core-floating > label {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  padding: var(--space-4);
  pointer-events: none;
  border: 2px solid transparent;
  transform-origin: 0 0;
  transition: all var(--duration-normal) var(--ease-out);
  color: var(--text-muted);
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.core-floating > .core-form-input:focus ~ label,
.core-floating > .core-form-input:not(:placeholder-shown) ~ label {
  opacity: 0.8;
  transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
  color: var(--color-navy);
}

/* ===== SEARCH INPUTS ===== */
.core-search-group {
  position: relative;
}

.core-search-input {
  padding-left: var(--space-10);
}

.core-search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: var(--text-lg);
  pointer-events: none;
}

/* ===== RESPONSIVE FORMS ===== */
@media (max-width: 640px) {
  .form-control,
  .core-form-input,
  .form-select,
  .core-form-select {
    font-size: 16px; /* Previene zoom en iOS */
  }
  
  .core-form-row {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .core-form-group-inline {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }
}