/* ==========================================================================
   Components Stylesheet - Forms, Buttons, Status Messages
   ========================================================================== */

/* Form Styles */
.newsletter-form {
  background: var(--white);
  padding: var(--spacing-10);
  border-radius: var(--border-radius-2xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--gray-200);
}

.form-group {
  margin-bottom: var(--spacing-6);
}

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

.form-label {
  display: block;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--spacing-4);
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  background: var(--white);
  color: var(--gray-900);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(97, 186, 122, 0.1);
  transform: translateY(-1px);
}

.form-input::placeholder {
  color: var(--gray-400);
}

.form-input:invalid:not(:placeholder-shown) {
  border-color: var(--error-color);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input:valid:not(:placeholder-shown) {
  border-color: var(--success-color);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-hint {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  margin-top: var(--spacing-2);
  font-style: normal;
  line-height: 1.5;
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml;charset=utf-8,%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(--spacing-3) center;
  background-repeat: no-repeat;
  background-size: 1.25rem;
  padding-right: var(--spacing-10);
  appearance: none;
}

/* Button Styles */
.submit-button {
  width: 100%;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--white);
  border: none;
  padding: var(--spacing-5) var(--spacing-6);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.submit-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-color) 100%);
}

.submit-button:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.submit-button:focus:not(:disabled) {
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

.submit-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.submit-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.submit-button:hover:not(:disabled)::before {
  left: 100%;
}

.btn-text,
.btn-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
}

.btn-loader {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.btn-loader::after {
  content: '';
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid var(--white);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: var(--spacing-2);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Status Messages */
.status-message {
  margin-top: var(--spacing-6);
  padding: var(--spacing-4) var(--spacing-5);
  border-radius: var(--border-radius-lg);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.status-message.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-color);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-message.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error-color);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.status-message.warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning-color);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.status-message.info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info-color);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.status-message::before {
  content: '';
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.status-message.success::before {
  content: '✓';
  background: var(--success-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: var(--font-size-xs);
}

.status-message.error::before {
  content: '✕';
  background: var(--error-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: var(--font-size-xs);
}

.status-message.warning::before {
  content: '⚠';
  background: var(--warning-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: var(--font-size-xs);
}

.status-message.info::before {
  content: 'ℹ';
  background: var(--info-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: var(--font-size-xs);
}

/* Loading States */
.form-loading .form-input,
.form-loading .form-select {
  opacity: 0.6;
  pointer-events: none;
}

.form-loading .submit-button {
  pointer-events: none;
}

.form-loading .btn-text {
  opacity: 0;
}

.form-loading .btn-loader {
  display: flex;
}

/* Form Validation States */
.form-group.has-error .form-input {
  border-color: var(--error-color);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

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

.form-error {
  display: block;
  color: var(--error-color);
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-2);
  font-weight: 500;
}

.form-success {
  display: block;
  color: var(--success-color);
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-2);
  font-weight: 500;
}

/* Focus Management */
.form-input:focus + .form-hint,
.form-select:focus + .form-hint {
  color: var(--primary-color);
}

/* Accessibility Enhancements */
@media (prefers-reduced-motion: reduce) {
  .submit-button,
  .form-input,
  .form-select,
  .status-message {
    transition: none;
  }
  
  .submit-button::before {
    display: none;
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  @keyframes slideIn {
    from, to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .form-input,
  .form-select {
    border-width: 3px;
  }
  
  .submit-button {
    border: 2px solid var(--white);
  }
  
  .status-message {
    border-width: 2px;
  }
}

/* Dark Mode Support (for future implementation) */
@media (prefers-color-scheme: dark) {
  .newsletter-form {
    background: var(--gray-800);
    border-color: var(--gray-700);
  }
  
  .form-input,
  .form-select {
    background: var(--gray-700);
    border-color: var(--gray-600);
    color: var(--white);
  }
  
  .form-input::placeholder {
    color: var(--gray-400);
  }
  
  .form-label {
    color: var(--gray-200);
  }
  
  .form-hint {
    color: var(--gray-400);
  }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
  .newsletter-form {
    padding: var(--spacing-6);
    margin: 0 var(--spacing-4);
  }
  
  .form-input,
  .form-select {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: var(--spacing-4);
  }
  
  .form-hint {
    font-size: var(--font-size-base); /* 모바일에서 더 큰 폰트 사용 */
    color: var(--gray-700);
  }
  
  .submit-button {
    padding: var(--spacing-4) var(--spacing-5);
    font-size: var(--font-size-base);
    min-height: 48px; /* 터치 타겟 최적화 */
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  .submit-button:hover {
    transform: none;
    box-shadow: var(--shadow-lg);
  }
  
  .form-input:focus,
  .form-select:focus {
    transform: none;
  }
}