/* Enterprise Form Design System */

/* ===== PROFESSIONAL FORM FOUNDATIONS ===== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--label-spacing);
  margin-bottom: var(--spacing-lg);
}

.form-row {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.form-row .form-group {
  flex: 1;
  margin-bottom: 0;
}

/* Executive Form Labels */
.form-label {
  font-size: var(--label-font-size);
  font-weight: var(--label-font-weight);
  color: var(--label-color);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  margin-bottom: var(--label-spacing);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.form-label--required::after {
  content: '*';
  color: var(--chart-negative);
  font-weight: var(--font-weight-executive);
}

.form-label-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: var(--font-normal);
  text-transform: none;
  letter-spacing: normal;
  margin-left: var(--spacing-xs);
}

/* ===== EXECUTIVE INPUT FIELDS ===== */

.form-input {
  width: 100%;
  height: var(--input-height-base);
  padding: var(--input-padding-y) var(--input-padding-x);
  background: var(--form-bg);
  backdrop-filter: var(--glass-blur-subtle);
  border: var(--form-border-width) solid var(--form-border-color);
  border-radius: var(--radius-md);
  font-size: var(--form-font-size);
  font-weight: var(--form-font-weight);
  line-height: var(--form-line-height);
  letter-spacing: var(--form-letter-spacing);
  color: var(--text-primary);
  transition: var(--transition-professional);
  box-shadow: var(--form-shadow-base);
  font-family: inherit;
}

.form-input::placeholder {
  color: var(--text-placeholder);
  font-weight: var(--font-normal);
  opacity: 0.7;
}

.form-input:hover {
  background: var(--form-bg-hover);
  border-color: var(--form-border-hover);
  box-shadow: var(--form-shadow-hover);
}

.form-input:focus {
  outline: none;
  background: var(--form-bg-focus);
  border-color: var(--form-border-focus);
  box-shadow: var(--form-shadow-focus);
  transform: var(--hover-elevation);
}

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

/* Input Size Variants */
.form-input--sm {
  height: var(--input-height-sm);
  font-size: var(--text-sm);
  padding: var(--spacing-sm) var(--spacing-md);
}

.form-input--lg {
  height: var(--input-height-lg);
  font-size: var(--text-lg);
  padding: var(--spacing-lg) var(--spacing-xl);
  font-weight: var(--font-weight-executive);
}

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

.form-textarea {
  min-height: 100px;
  resize: vertical;
  padding: var(--input-padding-y) var(--input-padding-x);
  font-family: inherit;
}

.form-textarea--executive {
  min-height: 120px;
  font-size: var(--form-font-size);
  line-height: var(--line-height-relaxed);
}

/* ===== SOPHISTICATED SELECT FIELDS ===== */

.form-select {
  width: 100%;
  height: var(--input-height-base);
  padding: var(--input-padding-y) var(--input-padding-x);
  background: var(--form-bg);
  backdrop-filter: var(--glass-blur-subtle);
  border: var(--form-border-width) solid var(--form-border-color);
  border-radius: var(--radius-md);
  font-size: var(--form-font-size);
  font-weight: var(--form-font-weight);
  color: var(--text-primary);
  transition: var(--transition-professional);
  box-shadow: var(--form-shadow-base);
  cursor: pointer;
  appearance: none;
  background-image: 
    linear-gradient(45deg, transparent 50%, var(--text-muted) 50%),
    linear-gradient(135deg, var(--text-muted) 50%, transparent 50%);
  background-position: 
    calc(100% - 20px) calc(1em + 2px),
    calc(100% - 15px) calc(1em + 2px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 40px;
}

.form-select:hover {
  background-color: var(--form-bg-hover);
  border-color: var(--form-border-hover);
  box-shadow: var(--form-shadow-hover);
}

.form-select:focus {
  outline: none;
  background-color: var(--form-bg-focus);
  border-color: var(--form-border-focus);
  box-shadow: var(--form-shadow-focus);
  transform: var(--hover-elevation);
}

/* ===== EXECUTIVE CHECKBOX SYSTEM ===== */

.form-checkbox-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  cursor: pointer;
  user-select: none;
  transition: var(--transition-micro);
}

.form-checkbox-group:hover {
  transform: var(--hover-elevation);
}

.form-checkbox {
  position: relative;
  width: 20px;
  height: 20px;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.form-checkbox-custom {
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  background: var(--form-bg);
  border: var(--form-border-width) solid var(--form-border-color);
  border-radius: var(--radius-xs);
  transition: var(--transition-professional);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--form-shadow-base);
}

.form-checkbox:hover + .form-checkbox-custom {
  border-color: var(--form-border-hover);
  box-shadow: var(--form-shadow-hover);
}

.form-checkbox:checked + .form-checkbox-custom {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  box-shadow: var(--form-shadow-focus);
}

.form-checkbox:checked + .form-checkbox-custom::after {
  content: '✓';
  color: white;
  font-size: 12px;
  font-weight: var(--font-weight-executive);
}

.form-checkbox:focus + .form-checkbox-custom {
  box-shadow: var(--form-shadow-focus);
}

.form-checkbox-label {
  font-size: var(--form-font-size);
  font-weight: var(--form-font-weight);
  color: var(--text-primary);
  flex: 1;
}

/* ===== PROFESSIONAL RADIO BUTTONS ===== */

.form-radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-radio-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  cursor: pointer;
  user-select: none;
  transition: var(--transition-micro);
}

.form-radio-item:hover {
  transform: var(--hover-elevation);
}

.form-radio {
  position: relative;
  width: 20px;
  height: 20px;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.form-radio-custom {
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  background: var(--form-bg);
  border: var(--form-border-width) solid var(--form-border-color);
  border-radius: var(--radius-full);
  transition: var(--transition-professional);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--form-shadow-base);
}

.form-radio:hover + .form-radio-custom {
  border-color: var(--form-border-hover);
  box-shadow: var(--form-shadow-hover);
}

.form-radio:checked + .form-radio-custom {
  border-color: var(--brand-primary);
  box-shadow: var(--form-shadow-focus);
}

.form-radio:checked + .form-radio-custom::after {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--brand-primary);
  border-radius: var(--radius-full);
}

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

.form-input--success {
  border-color: var(--form-border-success);
  box-shadow: var(--form-shadow-success);
}

.form-input--error {
  border-color: var(--form-border-error);
  box-shadow: var(--form-shadow-error);
}

.form-feedback {
  font-size: var(--text-sm);
  margin-top: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.form-feedback--success {
  color: var(--text-success);
}

.form-feedback--error {
  color: var(--text-error);
}

.form-feedback-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ===== EXECUTIVE FORM LAYOUTS ===== */

.form-executive {
  background: var(--bg-panel-executive);
  backdrop-filter: var(--glass-blur);
  padding: var(--executive-panel-padding);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--exec-shadow);
  max-width: 600px;
}

.form-header {
  margin-bottom: var(--spacing-component);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.form-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-executive);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  letter-spacing: var(--letter-spacing-tight);
}

.form-subtitle {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--line-height-professional);
}

.form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--spacing-component);
}

/* ===== PROFESSIONAL FORM BUTTONS ===== */

.form-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--brand-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--form-font-size);
  font-weight: var(--font-weight-executive);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition-professional);
  box-shadow: var(--chart-shadow-md);
  min-width: 120px;
}

.form-btn:hover {
  background: var(--brand-primary-hover);
  transform: var(--hover-elevation-strong);
  box-shadow: var(--chart-shadow-lg);
}

.form-btn:active {
  transform: var(--active-scale);
}

.form-btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border: var(--form-border-width) solid var(--border-base);
}

.form-btn--secondary:hover {
  background: var(--bg-hover);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

/* ===== RESPONSIVE FORM DESIGN ===== */

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .form-executive {
    padding: var(--spacing-lg);
    margin: var(--spacing-md);
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .form-btn {
    width: 100%;
    justify-content: center;
  }
  
  .input-height-lg {
    height: var(--input-height-base);
    font-size: var(--form-font-size);
  }
}

/* ===== DARK MODE FORM ENHANCEMENTS ===== */

@media (prefers-color-scheme: dark) {
  .form-input,
  .form-textarea,
  .form-select {
    background: var(--glass-background-dark);
    border-color: var(--glass-border-dark);
    color: var(--text-primary);
  }
  
  .form-checkbox-custom,
  .form-radio-custom {
    background: var(--glass-background-dark);
    border-color: var(--glass-border-dark);
  }
  
  .form-executive {
    background: var(--glass-background-dark);
    border-color: var(--glass-border-dark);
  }
}

[data-theme="dark"] {
  .form-input,
  .form-textarea,
  .form-select {
    background: var(--glass-background-dark);
    border-color: var(--glass-border-dark);
    color: var(--text-primary);
  }
  
  .form-checkbox-custom,
  .form-radio-custom {
    background: var(--glass-background-dark);
    border-color: var(--glass-border-dark);
  }
  
  .form-executive {
    background: var(--glass-background-dark);
    border-color: var(--glass-border-dark);
  }
}