/**
 * EC Components CSS - Modern Component Library
 * 
 * Componentes reutilizáveis baseados no Design System
 * Formulários, botões, modais, cards e elementos UI
 * 
 * @version 3.0.0
 * @since 2024
 */

/* ===== FORM COMPONENTS ===== */

/* Form Groups */
.ec-form-group {
  margin-bottom: var(--ec-space-4);
}

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

/* Labels */
.ec-label {
  display: block;
  font-size: var(--ec-text-sm);
  font-weight: var(--ec-font-medium);
  color: var(--ec-text-primary);
  margin-bottom: var(--ec-space-2);
  line-height: var(--ec-line-tight);
}

.ec-label--required::after {
  content: " *";
  color: var(--ec-error);
  font-weight: var(--ec-font-bold);
}

/* Inputs */
.ec-input {
  display: block;
  width: 100%;
  height: var(--ec-form-height);
  padding: var(--ec-space-2) var(--ec-space-3);
  font-size: var(--ec-text-sm);
  font-family: var(--ec-font-sans);
  line-height: var(--ec-line-tight);
  color: var(--ec-text-primary);
  background-color: var(--ec-bg-primary);
  border: var(--ec-form-border-width) solid var(--ec-border-primary);
  border-radius: var(--ec-radius-md);
  transition: border-color var(--ec-transition-fast), box-shadow var(--ec-transition-fast);
  outline: none;
}

.ec-input:focus {
  border-color: var(--ec-border-focus);
  box-shadow: var(--ec-form-focus-ring);
}

.ec-input:disabled {
  background-color: var(--ec-bg-secondary);
  color: var(--ec-text-disabled);
  cursor: not-allowed;
  opacity: 0.6;
}

.ec-input--error {
  border-color: var(--ec-border-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.ec-input--success {
  border-color: var(--ec-success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Input Sizes */
.ec-input--sm {
  height: var(--ec-form-height-sm);
  padding: var(--ec-space-1_5) var(--ec-space-2_5);
  font-size: var(--ec-text-xs);
}

.ec-input--lg {
  height: var(--ec-form-height-lg);
  padding: var(--ec-space-3) var(--ec-space-4);
  font-size: var(--ec-text-base);
}

/* Textarea */
.ec-textarea {
  resize: vertical;
  min-height: 80px;
  height: auto;
  line-height: var(--ec-line-normal);
}

/* Select */
.ec-select {
  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(--ec-space-2) center;
  background-repeat: no-repeat;
  background-size: 16px 16px;
  padding-right: var(--ec-space-8);
  appearance: none;
}

/* Checkbox & Radio */
.ec-checkbox,
.ec-radio {
  display: flex;
  align-items: flex-start;
  gap: var(--ec-space-2);
  cursor: pointer;
  font-size: var(--ec-text-sm);
  line-height: var(--ec-line-normal);
}

.ec-checkbox__input,
.ec-radio__input {
  width: 16px;
  height: 16px;
  border: 1px solid var(--ec-border-primary);
  background-color: var(--ec-bg-primary);
  margin: 0;
  flex-shrink: 0;
  margin-top: 2px;
  transition: all var(--ec-transition-fast);
}

.ec-checkbox__input {
  border-radius: var(--ec-radius-sm);
}

.ec-radio__input {
  border-radius: var(--ec-radius-full);
}

.ec-checkbox__input:checked,
.ec-radio__input:checked {
  background-color: var(--ec-primary);
  border-color: var(--ec-primary);
}

.ec-checkbox__input:checked {
  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");
}

.ec-radio__input: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");
}

/* Field Help Text */
.ec-field-help {
  margin-top: var(--ec-space-1);
  font-size: var(--ec-text-xs);
  color: var(--ec-text-muted);
  line-height: var(--ec-line-normal);
}

/* Field Error */
.ec-field-error {
  margin-top: var(--ec-space-1);
  font-size: var(--ec-text-xs);
  color: var(--ec-error);
  line-height: var(--ec-line-normal);
  display: flex;
  align-items: center;
  gap: var(--ec-space-1);
}

.ec-field-error::before {
  content: "⚠";
  font-size: 12px;
  flex-shrink: 0;
}

/* ===== BUTTON COMPONENTS ===== */

.ec-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ec-space-2);
  height: var(--ec-btn-height);
  padding: 0 var(--ec-btn-padding-x);
  font-size: var(--ec-text-sm);
  font-weight: var(--ec-font-medium);
  font-family: var(--ec-font-sans);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--ec-radius-md);
  cursor: pointer;
  transition: all var(--ec-transition-fast);
  outline: none;
  position: relative;
  overflow: hidden;
}

.ec-btn:focus-visible {
  outline: 2px solid var(--ec-primary);
  outline-offset: 2px;
}

.ec-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.ec-btn--primary {
  background-color: var(--ec-primary);
  color: var(--ec-text-inverse);
  box-shadow: var(--ec-shadow-sm);
}

.ec-btn--primary:hover:not(:disabled) {
  background-color: var(--ec-primary-600);
  transform: translateY(-1px);
  box-shadow: var(--ec-shadow-md);
}

.ec-btn--primary:active {
  transform: translateY(0);
  box-shadow: var(--ec-shadow-sm);
}

.ec-btn--secondary {
  background-color: var(--ec-bg-primary);
  color: var(--ec-text-primary);
  border-color: var(--ec-border-primary);
}

.ec-btn--secondary:hover:not(:disabled) {
  background-color: var(--ec-bg-secondary);
  border-color: var(--ec-border-focus);
}

.ec-btn--success {
  background-color: var(--ec-success);
  color: var(--ec-text-inverse);
}

.ec-btn--success:hover:not(:disabled) {
  background-color: var(--ec-success-dark);
}

.ec-btn--error {
  background-color: var(--ec-error);
  color: var(--ec-text-inverse);
}

.ec-btn--error:hover:not(:disabled) {
  background-color: var(--ec-error-dark);
}

.ec-btn--ghost {
  background-color: transparent;
  color: var(--ec-primary);
  border-color: transparent;
}

.ec-btn--ghost:hover:not(:disabled) {
  background-color: var(--ec-primary-50);
}

/* Button Sizes */
.ec-btn--sm {
  height: var(--ec-btn-height-sm);
  padding: 0 var(--ec-space-3);
  font-size: var(--ec-text-xs);
}

.ec-btn--lg {
  height: var(--ec-btn-height-lg);
  padding: 0 var(--ec-space-6);
  font-size: var(--ec-text-base);
}

.ec-btn--full {
  width: 100%;
}

/* Loading Button */
.ec-btn--loading {
  color: transparent;
}

.ec-btn--loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: ec-spin 1s linear infinite;
}

@keyframes ec-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===== CARD COMPONENTS ===== */

.ec-card {
  background-color: var(--ec-bg-primary);
  border: 1px solid var(--ec-border-secondary);
  border-radius: var(--ec-card-radius);
  box-shadow: var(--ec-card-shadow);
  overflow: hidden;
}

.ec-card__header {
  padding: var(--ec-space-4) var(--ec-card-padding);
  border-bottom: 1px solid var(--ec-border-secondary);
}

.ec-card__title {
  margin: 0;
  font-size: var(--ec-text-lg);
  font-weight: var(--ec-font-semibold);
  color: var(--ec-text-primary);
}

.ec-card__subtitle {
  margin: var(--ec-space-1) 0 0 0;
  font-size: var(--ec-text-sm);
  color: var(--ec-text-muted);
}

.ec-card__body {
  padding: var(--ec-card-padding);
}

.ec-card__footer {
  padding: var(--ec-space-4) var(--ec-card-padding);
  border-top: 1px solid var(--ec-border-secondary);
  background-color: var(--ec-bg-secondary);
}

/* ===== MODAL COMPONENTS ===== */

.ec-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--ec-z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--ec-space-4);
}

.ec-modal__backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--ec-modal-backdrop);
  backdrop-filter: blur(4px);
}

.ec-modal__content {
  position: relative;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  background-color: var(--ec-bg-primary);
  border-radius: var(--ec-modal-radius);
  box-shadow: var(--ec-modal-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.ec-modal__header {
  padding: var(--ec-space-6);
  border-bottom: 1px solid var(--ec-border-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ec-modal__title {
  margin: 0;
  font-size: var(--ec-text-lg);
  font-weight: var(--ec-font-semibold);
  color: var(--ec-text-primary);
}

.ec-modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  border-radius: var(--ec-radius);
  color: var(--ec-text-muted);
  cursor: pointer;
  padding: 0;
  transition: all var(--ec-transition-fast);
}

.ec-modal__close:hover {
  background-color: var(--ec-bg-secondary);
  color: var(--ec-text-primary);
}

.ec-modal__close::before {
  content: "×";
  font-size: 20px;
  line-height: 1;
}

.ec-modal__body {
  padding: var(--ec-space-6);
  overflow-y: auto;
  flex: 1;
}

.ec-modal__footer {
  padding: var(--ec-space-6);
  border-top: 1px solid var(--ec-border-secondary);
  display: flex;
  justify-content: flex-end;
  gap: var(--ec-space-3);
}

/* ===== BADGE COMPONENTS ===== */

.ec-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--ec-space-1);
  padding: var(--ec-space-1) var(--ec-space-2);
  font-size: var(--ec-text-xs);
  font-weight: var(--ec-font-medium);
  line-height: 1;
  border-radius: var(--ec-radius-full);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.ec-badge--primary {
  background-color: var(--ec-primary-100);
  color: var(--ec-primary-800);
}

.ec-badge--success {
  background-color: var(--ec-success-light);
  color: var(--ec-success-dark);
}

.ec-badge--error {
  background-color: var(--ec-error-light);
  color: var(--ec-error-dark);
}

.ec-badge--warning {
  background-color: var(--ec-warning-light);
  color: var(--ec-warning-dark);
}

.ec-badge--info {
  background-color: var(--ec-info-light);
  color: var(--ec-info-dark);
}

.ec-badge--gray {
  background-color: var(--ec-gray-100);
  color: var(--ec-gray-800);
}

/* ===== PROGRESS COMPONENTS ===== */

.ec-progress {
  width: 100%;
  height: 8px;
  background-color: var(--ec-bg-tertiary);
  border-radius: var(--ec-radius-full);
  overflow: hidden;
}

.ec-progress__bar {
  height: 100%;
  background-color: var(--ec-primary);
  border-radius: var(--ec-radius-full);
  transition: width var(--ec-transition-normal);
}

.ec-progress--sm {
  height: 4px;
}

.ec-progress--lg {
  height: 12px;
}

/* Progress with Steps */
.ec-progress-steps {
  display: flex;
  gap: var(--ec-space-2);
  margin-bottom: var(--ec-space-6);
}

.ec-progress-step {
  flex: 1;
  height: 4px;
  background-color: var(--ec-bg-tertiary);
  border-radius: var(--ec-radius-full);
  overflow: hidden;
}

.ec-progress-step--active {
  background-color: var(--ec-primary);
}

.ec-progress-step--completed {
  background-color: var(--ec-success);
}

/* ===== ALERT COMPONENTS ===== */

.ec-alert {
  padding: var(--ec-space-4);
  border-radius: var(--ec-radius-lg);
  border-left: 4px solid;
  margin-bottom: var(--ec-space-4);
}

.ec-alert__title {
  margin: 0 0 var(--ec-space-2) 0;
  font-size: var(--ec-text-sm);
  font-weight: var(--ec-font-semibold);
}

.ec-alert__message {
  margin: 0;
  font-size: var(--ec-text-sm);
  line-height: var(--ec-line-normal);
}

.ec-alert--success {
  background-color: var(--ec-success-light);
  border-left-color: var(--ec-success);
  color: var(--ec-success-dark);
}

.ec-alert--error {
  background-color: var(--ec-error-light);
  border-left-color: var(--ec-error);
  color: var(--ec-error-dark);
}

.ec-alert--warning {
  background-color: var(--ec-warning-light);
  border-left-color: var(--ec-warning);
  color: var(--ec-warning-dark);
}

.ec-alert--info {
  background-color: var(--ec-info-light);
  border-left-color: var(--ec-info);
  color: var(--ec-info-dark);
}

/* ===== FILE UPLOAD COMPONENTS ===== */

.ec-upload {
  position: relative;
}

.ec-upload__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  overflow: hidden;
}

.ec-upload__area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--ec-space-8);
  border: 2px dashed var(--ec-border-primary);
  border-radius: var(--ec-radius-lg);
  background-color: var(--ec-bg-secondary);
  cursor: pointer;
  transition: all var(--ec-transition-fast);
  text-align: center;
}

.ec-upload__area:hover,
.ec-upload__area--dragover {
  border-color: var(--ec-primary);
  background-color: var(--ec-primary-50);
}

.ec-upload__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--ec-space-4);
  color: var(--ec-text-muted);
}

.ec-upload__text {
  font-size: var(--ec-text-base);
  font-weight: var(--ec-font-medium);
  color: var(--ec-text-primary);
  margin-bottom: var(--ec-space-1);
}

.ec-upload__help {
  font-size: var(--ec-text-sm);
  color: var(--ec-text-muted);
}

/* Upload Preview */
.ec-upload__preview {
  margin-top: var(--ec-space-4);
  padding: var(--ec-space-4);
  background-color: var(--ec-success-light);
  border: 1px solid var(--ec-success);
  border-radius: var(--ec-radius-lg);
  display: flex;
  align-items: center;
  gap: var(--ec-space-3);
}

.ec-upload__preview-icon {
  width: 32px;
  height: 32px;
  color: var(--ec-success-dark);
  flex-shrink: 0;
}

.ec-upload__preview-info {
  flex: 1;
  min-width: 0;
}

.ec-upload__preview-name {
  font-size: var(--ec-text-sm);
  font-weight: var(--ec-font-medium);
  color: var(--ec-success-dark);
  margin-bottom: var(--ec-space-0_5);
  word-break: break-word;
}

.ec-upload__preview-size {
  font-size: var(--ec-text-xs);
  color: var(--ec-success-dark);
  opacity: 0.8;
}

.ec-upload__preview-remove {
  background: none;
  border: none;
  color: var(--ec-error);
  cursor: pointer;
  padding: var(--ec-space-1);
  border-radius: var(--ec-radius);
  transition: background-color var(--ec-transition-fast);
}

.ec-upload__preview-remove:hover {
  background-color: rgba(239, 68, 68, 0.1);
}

/* ===== RESPONSIVE UTILITIES ===== */

/* Mobile First Breakpoints */
@media (min-width: 640px) {
  .ec-modal__content {
    max-width: 600px;
  }
}

@media (min-width: 768px) {
  .ec-card__header,
  .ec-card__body,
  .ec-card__footer {
    padding: var(--ec-space-6);
  }
  
  .ec-modal__header,
  .ec-modal__body,
  .ec-modal__footer {
    padding: var(--ec-space-8);
  }
}

@media (max-width: 639px) {
  .ec-btn--full-mobile {
    width: 100%;
  }
  
  .ec-modal__content {
    margin: var(--ec-space-4);
    max-height: calc(100vh - var(--ec-space-8));
  }
  
  .ec-upload__area {
    padding: var(--ec-space-6);
  }
}