/* ============================================
   FORMS - Style cho form elements
   Chức năng: Input, textarea, select, labels, hints
   ============================================ */

/* Form Group - Container cho một field */
.form-group {
  margin-bottom: var(--spacing-md);
  padding: 14px 14px 12px;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid #dc2626; /* viền mảnh giống khối lớn */
  position: relative;
  box-shadow: 0 3px 8px rgba(15, 23, 42, 0.04);
}

.form-group + .form-group {
  margin-top: 10px;
}

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

/* Label */
label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--muted);
  margin-bottom: var(--spacing-sm);
}

label i {
  margin-right: var(--spacing-xs);
  color: var(--accent);
}

.required {
  color: var(--danger);
  margin-left: 4px;
}

/* Input, Textarea, Select */
input[type="text"],
input[type="url"],
input[type="number"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid #e6eef8;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  background: white;
  font-family: inherit;
}

.form-group:focus-within {
  border-color: #b91c1c;
  box-shadow: 0 0 0 1px rgba(185, 28, 28, 0.22), 0 4px 14px rgba(127, 29, 29, 0.25);
  background: #fff5f5;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(11, 110, 215, 0.1);
}

/* Textarea */
textarea {
  resize: vertical;
  min-height: 80px;
}

.batch-input {
  min-height: 200px;
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
}

/* Color Picker */
.color-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
}

.color-picker-wrapper {
  position: relative;
}

input[type="color"] {
  width: 100%;
  height: 50px;
  border: 2px solid #e6eef8;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 4px;
}

/* Form Hint - Gợi ý dưới input */
.form-hint {
  font-size: var(--font-size-xs);
  color: var(--muted);
  margin-top: var(--spacing-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.form-hint i {
  color: var(--info);
}

/* Checkbox Label */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-weight: 600;
  color: #0b2540;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

/* Security Options */
.security-option {
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  background: #fff1f2;
  border: 1px dashed #fb7185;
}

.security-option-content {
  margin-top: var(--spacing-sm);
  padding-left: var(--spacing-md);
}

/* Responsive - Mobile */
@media (max-width: 768px) {
  .form-group {
    margin-bottom: 16px;
    padding: 12px 12px 10px;
  }
  
  input[type="text"],
  input[type="url"],
  input[type="number"],
  input[type="email"],
  input[type="tel"],
  input[type="date"],
  input[type="time"],
  select,
  textarea {
    width: 100%;
    max-width: 100%;
    padding: 12px;
    font-size: 16px; /* Ngăn zoom tự động trên iOS */
    border-radius: 8px;
  }
  
  textarea {
    min-height: 100px;
  }
  
  .batch-input {
    min-height: 150px;
    font-size: 14px;
  }
  
  input[type="color"] {
    height: 44px; /* Touch-friendly */
    min-height: 44px;
  }
  
  .color-group {
    grid-template-columns: 1fr 1fr !important;
    gap: 12px;
  }
  
  .form-hint {
    font-size: 12px;
    line-height: 1.5;
  }
  
  label {
    font-size: 14px;
    margin-bottom: 8px;
  }
}