/*
 * DDT Form CSS v1.0.0
 * Professional form components and controls
 */

/* ========================================
   CSS VARIABLES
   ======================================== */

:root {
  --ddt-primary: #007bff;
  --ddt-secondary: #6c757d;
  --ddt-success: #28a745;
  --ddt-danger: #dc3545;
  --ddt-warning: #ffc107;
  --ddt-info: #17a2b8;
  --ddt-light: #f8f9fa;
  --ddt-dark: #343a40;
  --ddt-white: #ffffff;
  --ddt-border: #ced4da;
  --ddt-focus: rgba(0, 123, 255, 0.25);
  --ddt-disabled: #e9ecef;
  --ddt-radius: 0.375rem;
  --ddt-transition: all 0.2s ease-in-out;
}

/* ========================================
   BASE INPUT STYLES
   ======================================== */

.ddt-input,
.ddt-textarea,
.ddt-select, .form-control {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  color: #495057;
  background-color: var(--ddt-white);
  border: 1px solid var(--ddt-border);
  border-radius: var(--ddt-radius);
  transition: var(--ddt-transition);
  outline: none;
}

.ddt-input:focus,
.ddt-textarea:focus,
.ddt-select:focus, 
.form-control:focus {
  border-color: var(--ddt-primary);
  box-shadow: 0 0 0 0.2rem var(--ddt-focus);
}

.ddt-input:disabled,
.ddt-textarea:disabled,
.ddt-select:disabled,
.form-control:disabled {
  background-color: var(--ddt-disabled);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-control::placeholder,
.ddt-input::placeholder,
.ddt-textarea::placeholder,
.ddt-textarea::placeholder {
  color: #6c757d;
  opacity: 0.6;
}

/* Input sizes */
.ddt-input-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}

.ddt-input-lg {
  padding: 0.75rem 1rem;
  font-size: 1.125rem;
}

/* ========================================
   TEXTAREA
   ======================================== */

.ddt-textarea {
  min-height: 100px;
  resize: vertical;
}

.ddt-textarea-auto {
  resize: none;
  overflow: hidden;
}

/* ========================================
   SELECT
   ======================================== */

.ddt-select {
  padding-right: 2.5rem;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px 12px;
  cursor: pointer;
}

.ddt-select[multiple] {
  background-image: none;
  padding-right: 0.75rem;
}

/* ========================================
   CHECKBOXES & RADIO BUTTONS
   ======================================== */

.ddt-checkbox,
.ddt-radio {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.ddt-checkbox input[type="checkbox"],
.ddt-radio input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.ddt-checkbox-mark,
.ddt-radio-mark {
  position: relative;
  display: inline-block;
  width: 20px;
  height: 20px;
  background-color: var(--ddt-white);
  border: 2px solid var(--ddt-border);
  margin-right: 0.5rem;
  transition: var(--ddt-transition);
}

.ddt-checkbox-mark {
  border-radius: 0.25rem;
}

.ddt-radio-mark {
  border-radius: 50%;
}

/* Checked state */
.ddt-checkbox input:checked ~ .ddt-checkbox-mark,
.ddt-radio input:checked ~ .ddt-radio-mark {
  background-color: var(--ddt-primary);
  border-color: var(--ddt-primary);
}

/* Checkmark */
.ddt-checkbox-mark::after {
  content: "";
  position: absolute;
  display: none;
  left: 5px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.ddt-checkbox input:checked ~ .ddt-checkbox-mark::after {
  display: block;
}

/* Radio dot */
.ddt-radio-mark::after {
  content: "";
  position: absolute;
  display: none;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: white;
}

.ddt-radio input:checked ~ .ddt-radio-mark::after {
  display: block;
}

/* Focus state */
.ddt-checkbox input:focus ~ .ddt-checkbox-mark,
.ddt-radio input:focus ~ .ddt-radio-mark {
  box-shadow: 0 0 0 0.2rem var(--ddt-focus);
}

/* Disabled state */
.ddt-checkbox input:disabled ~ .ddt-checkbox-mark,
.ddt-radio input:disabled ~ .ddt-radio-mark {
  background-color: var(--ddt-disabled);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ========================================
   SWITCH TOGGLE
   ======================================== */

.ddt-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.ddt-switch input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.ddt-switch-slider {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
  background-color: var(--ddt-border);
  border-radius: 24px;
  margin-right: 0.5rem;
  transition: var(--ddt-transition);
}

.ddt-switch-slider::before {
  content: "";
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: var(--ddt-transition);
}

.ddt-switch input:checked ~ .ddt-switch-slider {
  background-color: var(--ddt-primary);
}

.ddt-switch input:checked ~ .ddt-switch-slider::before {
  transform: translateX(24px);
}

.ddt-switch input:focus ~ .ddt-switch-slider {
  box-shadow: 0 0 0 0.2rem var(--ddt-focus);
}

.ddt-switch input:disabled ~ .ddt-switch-slider {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ========================================
   BUTTONS
   ======================================== */

.ddt-btn,.btn  {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  border-radius: var(--ddt-radius);
  transition: var(--ddt-transition);
  text-decoration: none;
}
.btn-xs{
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  line-height: 1rem;
}
.btn-sm{
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
}
.btn-lg{
  padding: 0.75rem 1.5rem;
  font-size: 1.125rem;
  line-height: 1.75rem;
}

.ddt-btn,.btn :hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.ddt-btn:active,.btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.ddt-btn:disabled, .btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button variants */
.ddt-btn-primary,.btn-primary {
  color: white;
  background-color: var(--ddt-primary);
  border-color: var(--ddt-primary);
}

.ddt-btn-secondary {
  color: white;
  background-color: var(--ddt-secondary);
  border-color: var(--ddt-secondary);
}

.ddt-btn-success {
  color: white;
  background-color: var(--ddt-success);
  border-color: var(--ddt-success);
}

.ddt-btn-danger,.btn-danger {
  color: white;
  background-color: var(--ddt-danger);
  border-color: var(--ddt-danger);
}

.ddt-btn-warning,.btn-warning  {
  color: #212529;
  background-color: var(--ddt-warning);
  border-color: var(--ddt-warning);
}

.ddt-btn-info {
  color: white;
  background-color: var(--ddt-info);
  border-color: var(--ddt-info);
}

.ddt-btn-light {
  color: #212529;
  background-color: var(--ddt-light);
  border-color: var(--ddt-light);
}

.ddt-btn-dark {
  color: white;
  background-color: var(--ddt-dark);
  border-color: var(--ddt-dark);
}

/* Outline buttons */
.ddt-btn-outline-primary {
  color: var(--ddt-primary);
  border-color: var(--ddt-primary);
  background-color: transparent;
}

.ddt-btn-outline-primary:hover {
  color: white;
  background-color: var(--ddt-primary);
}

.ddt-btn-outline-secondary {
  color: var(--ddt-secondary);
  border-color: var(--ddt-secondary);
  background-color: transparent;
}

.ddt-btn-outline-secondary:hover {
  color: white;
  background-color: var(--ddt-secondary);
}

.ddt-btn-outline-success {
  color: var(--ddt-success);
  border-color: var(--ddt-success);
  background-color: transparent;
}

.ddt-btn-outline-success:hover {
  color: white;
  background-color: var(--ddt-success);
}

.ddt-btn-outline-danger {
  color: var(--ddt-danger);
  border-color: var(--ddt-danger);
  background-color: transparent;
}

.ddt-btn-outline-danger:hover {
  color: white;
  background-color: var(--ddt-danger);
}

/* Button sizes */
.ddt-btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}

.ddt-btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1.125rem;
}

/* Button block */
.ddt-btn-block {
  display: flex;
  width: 100%;
}

/* Button group */
.ddt-btn-group {
  display: inline-flex;
  vertical-align: middle;
}

.ddt-btn-group > .ddt-btn {
  position: relative;
  margin-left: -1px;
}

.ddt-btn-group > .ddt-btn:first-child {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  margin-left: 0;
}

.ddt-btn-group > .ddt-btn:last-child {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.ddt-btn-group > .ddt-btn:not(:first-child):not(:last-child) {
  border-radius: 0;
}

.ddt-btn-group > .ddt-btn:hover,
.ddt-btn-group > .ddt-btn:focus {
  z-index: 1;
}

/* ========================================
   FORM GROUP
   ======================================== */

.ddt-form-group {
  margin-bottom: 1rem;
}

.ddt-form-label {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: #212529;
}

.ddt-form-label-required::after {
  content: "*";
  color: var(--ddt-danger);
  margin-left: 0.25rem;
}

.ddt-form-text {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: #6c757d;
}

/* ========================================
   INPUT GROUP
   ======================================== */

.ddt-input-group {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  width: 100%;
}

.ddt-input-group > .ddt-input,
.ddt-input-group > .ddt-select {
  position: relative;
  flex: 1 1 auto;
  width: 1%;
  min-width: 0;
}

.ddt-input-group-prepend,
.ddt-input-group-append {
  display: flex;
}

.ddt-input-group-text {
  display: flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: #495057;
  text-align: center;
  white-space: nowrap;
  background-color: var(--ddt-disabled);
  border: 1px solid var(--ddt-border);
}

.ddt-input-group-prepend .ddt-input-group-text {
  border-right: 0;
  border-top-left-radius: var(--ddt-radius);
  border-bottom-left-radius: var(--ddt-radius);
}

.ddt-input-group-append .ddt-input-group-text {
  border-left: 0;
  border-top-right-radius: var(--ddt-radius);
  border-bottom-right-radius: var(--ddt-radius);
}

.ddt-input-group > .ddt-input-group-prepend > .ddt-btn,
.ddt-input-group > .ddt-input-group-prepend > .ddt-input-group-text {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.ddt-input-group > .ddt-input-group-append > .ddt-btn,
.ddt-input-group > .ddt-input-group-append > .ddt-input-group-text {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.ddt-input-group-prepend + .ddt-input,
.ddt-input-group-prepend + .ddt-select {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

.ddt-input + .ddt-input-group-append,
.ddt-select + .ddt-input-group-append {
  margin-left: -1px;
}

.ddt-input-group .ddt-input:not(:last-child),
.ddt-input-group .ddt-select:not(:last-child) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

/* ========================================
   VALIDATION STATES
   ======================================== */

.ddt-input.ddt-is-valid,
.ddt-select.ddt-is-valid,
.ddt-textarea.ddt-is-valid {
  border-color: var(--ddt-success);
}

.ddt-input.ddt-is-valid:focus,
.ddt-select.ddt-is-valid:focus,
.ddt-textarea.ddt-is-valid:focus {
  border-color: var(--ddt-success);
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

.ddt-input.ddt-is-invalid,
.ddt-select.ddt-is-invalid,
.ddt-textarea.ddt-is-invalid {
  border-color: var(--ddt-danger);
}

.ddt-input.ddt-is-invalid:focus,
.ddt-select.ddt-is-invalid:focus,
.ddt-textarea.ddt-is-invalid:focus {
  border-color: var(--ddt-danger);
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.ddt-valid-feedback {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: var(--ddt-success);
}

.ddt-invalid-feedback {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: var(--ddt-danger);
}

/* ========================================
   FILE INPUT
   ======================================== */

.ddt-file-input {
  position: relative;
  display: inline-block;
  width: 100%;
  cursor: pointer;
}

.ddt-file-input input[type="file"] {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.ddt-file-label {
  display: flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
  color: #495057;
  background-color: var(--ddt-white);
  border: 1px solid var(--ddt-border);
  border-radius: var(--ddt-radius);
  transition: var(--ddt-transition);
}

.ddt-file-input:hover .ddt-file-label {
  background-color: var(--ddt-light);
}

.ddt-file-label::before {
  content: "Choose file";
  display: inline-block;
  padding: 0.375rem 0.75rem;
  margin-right: 0.75rem;
  background-color: var(--ddt-disabled);
  border-right: 1px solid var(--ddt-border);
  border-radius: var(--ddt-radius) 0 0 var(--ddt-radius);
}

/* ========================================
   RANGE INPUT
   ======================================== */

.ddt-range {
  width: 100%;
  height: 1.5rem;
  padding: 0;
  background-color: transparent;
  appearance: none;
}

.ddt-range::-webkit-slider-track {
  width: 100%;
  height: 0.5rem;
  background-color: var(--ddt-disabled);
  border-radius: 0.25rem;
  cursor: pointer;
}

.ddt-range::-webkit-slider-thumb {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: -0.375rem;
  background-color: var(--ddt-primary);
  border: 2px solid white;
  border-radius: 50%;
  cursor: pointer;
  appearance: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.ddt-range::-moz-range-track {
  width: 100%;
  height: 0.5rem;
  background-color: var(--ddt-disabled);
  border-radius: 0.25rem;
  cursor: pointer;
}

.ddt-range::-moz-range-thumb {
  width: 1.25rem;
  height: 1.25rem;
  background-color: var(--ddt-primary);
  border: 2px solid white;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.ddt-range:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 0.2rem var(--ddt-focus);
}

.ddt-range:focus::-moz-range-thumb {
  box-shadow: 0 0 0 0.2rem var(--ddt-focus);
}

/* ========================================
   FLOATING LABELS
   ======================================== */

.ddt-form-floating {
  position: relative;
}

.ddt-form-floating > .ddt-input,
.ddt-form-floating > .ddt-select,
.ddt-form-floating > .ddt-textarea {
  padding: 1rem 0.75rem;
}

.ddt-form-floating > label {
  position: absolute;
  top: 0;
  left: 0;
  padding: 1rem 0.75rem;
  pointer-events: none;
  border: 1px solid transparent;
  transform-origin: 0 0;
  transition: opacity 0.1s ease-in-out, transform 0.1s ease-in-out;
  color: #6c757d;
}

.ddt-form-floating > .ddt-input:focus ~ label,
.ddt-form-floating > .ddt-input:not(:placeholder-shown) ~ label,
.ddt-form-floating > .ddt-select:focus ~ label,
.ddt-form-floating > .ddt-select:not([value=""]) ~ label,
.ddt-form-floating > .ddt-textarea:focus ~ label,
.ddt-form-floating > .ddt-textarea:not(:placeholder-shown) ~ label {
  opacity: 0.65;
  transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}