* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  --primary: #5e81ac;
  --primary-dark: #4c6a92;
  --secondary: #81a1c1;
  --success: #a3be8c;
  --danger: #bf616a;
  --warning: #ebcb8b;
  --light: #f8f9fa;
  --dark: #2e3440;
  --gray: #6c757d;
  --gray-light: #e9ecef;
  --gray-dark: #4c566a;
  --border-radius: 8px;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #eceff4 0%, #e5e9f0 100%);
  min-height: 100vh;
  color: var(--dark);
  line-height: 1.5;
}
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}
.header {
  text-align: center;
  margin-bottom: 30px;
  color: var(--dark);
}
.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 8px;
}
.logo i {
  font-size: 2.2rem;
  color: var(--primary);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}
.logo h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--primary-dark);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}
.subtitle {
  font-size: 1rem;
  opacity: 0.9;
  font-weight: 400;
  color: var(--gray-dark);
}
.main-content {
  background: white;
  border-radius: 16px;
  padding: 25px;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.unified-interface {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.method-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 15px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--gray-light);
}
.method-btn {
  padding: 10px 16px;
  border: none;
  background: var(--light);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  color: var(--gray);
  display: flex;
  align-items: center;
  gap: 8px;
}
.method-btn:hover {
  background: var(--gray-light);
  color: var(--dark);
}
.method-btn.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 2px 4px rgba(67, 97, 238, 0.3);
}
.method-btn i {
  font-size: 16px;
}
.method-content {
  display: none;
}
.method-content.active {
  display: block;
}
.form-section {
  margin-bottom: 20px;
  padding: 20px;
  background: var(--light);
  border-radius: 12px;
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow);
}
.form-section h3 {
  margin-bottom: 16px;
  color: var(--dark);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}
.form-section h3 i {
  color: var(--primary);
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--gray-light);
  border-radius: var(--border-radius);
  font-size: 14px;
  transition: border-color 0.3s ease;
  background: white;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}
.form-textarea {
  resize: vertical;
  min-height: 120px;
}
.btn {
  padding: 10px 18px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(67, 97, 238, 0.2);
}
.btn-secondary {
  background: var(--gray);
  color: white;
}
.btn-secondary:hover {
  background: var(--gray-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(108, 117, 125, 0.2);
}
.btn-success {
  background: var(--success);
  color: white;
}
.btn-success:hover {
  background: #05b385;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(6, 214, 160, 0.2);
}
.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-danger:hover {
  background: #d23d61;
  box-shadow: 0 4px 8px rgba(239, 71, 111, 0.2);
}
.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}
.recipients-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.recipient-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  align-items: end;
}
.custom-fields-container {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.add-field-container {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-start;
  margin-bottom: 8px;
}
.custom-field-item {
  display: flex;
  align-items: center;
  gap: 8px;
}
.custom-field-inputs {
  display: flex;
  flex: 1;
  gap: 8px;
}
.custom-field-name {
  flex: 1;
}
.custom-field-value {
  flex: 1;
}
.custom-field-item .btn-remove-field {
  padding: 6px;
  font-size: 12px;
  min-width: auto;
  height: 32px;
  width: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.recipients-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.recipient-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: white;
  border-radius: var(--border-radius);
  border: 1px solid var(--gray-light);
  transition: var(--transition);
}
.recipient-item:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
}
.recipient-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.recipient-name {
  font-weight: 600;
  color: var(--dark);
}
.recipient-email {
  color: var(--gray);
  font-size: 13px;
}
.recipient-phone {
  color: var(--gray);
  font-size: 12px;
}
.recipient-custom-field {
  color: var(--gray);
  font-size: 12px;
  display: flex;
  gap: 4px;
}
.recipient-custom-field strong {
  color: var(--gray-dark);
}
.placeholder-help-text {
  margin: 0 0 12px 0;
  color: var(--gray-dark);
  font-size: 14px;
  line-height: 1.4;
}
.file-upload-area {
  border: 2px dashed var(--gray-light);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  transition: border-color 0.3s ease;
}
.file-upload-area:hover {
  border-color: var(--primary);
}
.upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.upload-zone i {
  font-size: 2.5rem;
  color: var(--gray);
}
.upload-zone p {
  color: var(--gray);
  margin: 0;
  font-size: 14px;
}
.file-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: var(--light);
  border-radius: var(--border-radius);
  margin-top: 15px;
}
.file-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.preview-table {
  margin-top: 15px;
  overflow-x: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}
.preview-table table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
}
.preview-table th,
.preview-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--gray-light);
  font-size: 14px;
}
.preview-table th {
  background: var(--light);
  font-weight: 600;
  color: var(--gray-dark);
}
.preview-table tr:last-child td {
  border-bottom: none;
}
.config-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 15px;
  margin-bottom: 15px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-weight: 500;
  color: var(--gray-dark);
  font-size: 14px;
}
.action-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-light);
}
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  backdrop-filter: blur(4px);
}
.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-content {
  background: white;
  border-radius: 12px;
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-light);
  background: var(--light);
}
.modal-header h3 {
  margin: 0;
  color: var(--dark);
  font-size: 1.1rem;
}
.close-btn {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--gray);
  padding: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.3s ease;
}
.close-btn:hover {
  background: var(--gray-light);
  color: var(--dark);
}
.modal-body {
  padding: 20px;
  max-height: 70vh;
  overflow-y: auto;
}
.preview-tabs,
.custom-content-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 15px;
  border-bottom: 1px solid var(--gray-light);
  padding-bottom: 8px;
}
.preview-subject {
  background: var(--light);
  padding: 12px;
  border-radius: var(--border-radius);
  margin-bottom: 15px;
  border-left: 4px solid var(--primary);
}
.preview-subject strong {
  color: var(--dark);
  font-weight: 600;
}
.preview-subject span {
  color: var(--primary);
  font-weight: 500;
}
.preview-tab,
.content-tab {
  padding: 8px 14px;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: var(--border-radius);
  font-size: 14px;
  color: var(--gray);
  transition: var(--transition);
}
.preview-tab.active,
.content-tab.active {
  background: var(--primary);
  color: white;
}
.preview-content,
.custom-content-panes {
  position: relative;
}
.preview-pane,
.content-pane {
  display: none;
}
.preview-pane.active,
.content-pane.active {
  display: block;
}
#htmlPreview {
  border: 1px solid var(--gray-light);
  border-radius: var(--border-radius);
  padding: 16px;
  background: var(--light);
  max-height: 400px;
  overflow-y: auto;
}
#textPreview {
  white-space: pre-wrap;
  font-family: monospace;
  background: var(--light);
  padding: 16px;
  border-radius: var(--border-radius);
  border: 1px solid var(--gray-light);
  max-height: 400px;
  overflow-y: auto;
}
.progress-container {
  margin-bottom: 15px;
}
.progress-bar {
  width: 100%;
  height: 16px;
  background: var(--gray-light);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 8px;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--success));
  width: 0%;
  transition: width 0.3s ease;
}
.progress-text {
  text-align: center;
  font-weight: 600;
  color: var(--dark);
  font-size: 14px;
}
.progress-details {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--gray-light);
  border-radius: var(--border-radius);
  padding: 12px;
  background: var(--light);
  font-size: 14px;
}
.custom-content-header {
  margin-bottom: 15px;
  padding: 12px;
  background: #e5e9f0;
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary);
}
.custom-content-header h4 {
  margin: 0 0 8px 0;
  color: var(--primary-dark);
  font-size: 1rem;
}
.placeholder-info {
  margin: 0;
  color: var(--gray-dark);
  font-size: 14px;
  line-height: 1.4;
}
.placeholder-info code {
  background: #eceff4;
  color: var(--primary-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: "Courier New", monospace;
  font-size: 12px;
}
.placeholder-examples {
  background: var(--light);
  border-radius: var(--border-radius);
  padding: 16px;
  border: 1px solid var(--gray-light);
  margin-top: 15px;
}
.placeholder-examples h5 {
  margin: 0 0 12px 0;
  color: var(--gray-dark);
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.placeholder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
}
.placeholder-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--gray);
}
.placeholder-item code {
  background: #eceff4;
  color: var(--primary-dark);
  padding: 3px 6px;
  border-radius: 4px;
  font-family: "Courier New", monospace;
  font-size: 12px;
  font-weight: 600;
}
.mapping-instructions {
  margin-bottom: 15px;
  color: var(--gray-dark);
  font-size: 14px;
  line-height: 1.5;
}
.mapping-required,
.mapping-optional {
  background: var(--light);
  border-radius: var(--border-radius);
  padding: 16px;
  margin-bottom: 15px;
  border-left: 4px solid var(--primary);
}
.mapping-optional {
  border-left-color: var(--success);
}
.mapping-required h4,
.mapping-optional h4 {
  margin: 0 0 12px 0;
  color: var(--gray-dark);
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mapping-required h4 i {
  color: var(--danger);
}
.mapping-optional h4 i {
  color: var(--success);
}
.mapping-field {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
  gap: 8px;
}
.mapping-field label {
  width: 70px;
  font-weight: 500;
  color: var(--gray-dark);
  font-size: 14px;
}
.mapping-field select {
  flex: 1;
}
.mapping-help {
  margin: 0 0 12px 0;
  color: var(--gray);
  font-size: 14px;
}
.optional-fields-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 8px;
}
.optional-field-item {
  display: flex;
  align-items: center;
  padding: 8px;
  background: white;
  border-radius: var(--border-radius);
  border: 1px solid var(--gray-light);
}
.optional-field-checkbox {
  margin-right: 8px;
}
.optional-field-name {
  flex: 1;
  font-size: 14px;
  color: var(--gray-dark);
}
.optional-field-preview {
  font-size: 12px;
  color: var(--gray);
  background: var(--gray-light);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
}
.mapping-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid var(--gray-light);
}
.message {
  padding: 12px 16px;
  border-radius: var(--border-radius);
  margin: 15px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  animation: fadeIn 0.3s ease;
}

.saveCredentialsBox {
  display: flex;
  align-items: center;
  gap: 2px;
}

.saveCredentialsBox label {
  font-size: 14px;
  color: var(--gray-dark);
}

.saveCredentialsBox input {
  margin-right: 10px;
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid var(--gray-light);
  cursor: pointer;
}

.savedSmptShow {
  margin-top: 10px;
  font-size: 14px;
  color: var(--gray-dark);
  background: var(--light);
  border-radius: var(--border-radius);
  padding: 12px;
  border: 1px solid var(--gray-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.savedSmptShow button {
  background: var(--danger);
  color: white;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
}

#saveCustomTemplateBox {
  margin-top: 10px;
  font-size: 14px;
  color: var(--gray-dark);
  background: var(--light);
  border-radius: var(--border-radius);
  padding: 12px;
  border: 1px solid var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

#saveCustomTemplateBox button {
  background: var(--danger);
  color: white;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.message.success {
  background: #ecf4eb;
  color: #4b7b58;
  border: 1px solid #d8e5d5;
}
.message.error {
  background: #f4e9e9;
  color: #9c4a53;
  border: 1px solid #e5d5d5;
}
.message.info {
  background: #e5e9f0;
  color: #5e81ac;
  border: 1px solid #d8e1e8;
}
.smtp-config {
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.smtp-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 15px;
}
.smtp-actions {
  display: flex;
  gap: 10px;
  margin-top: 5px;
}
.smtp-info {
  margin-top: 15px;
  background: var(--light);
  border-radius: var(--border-radius);
  padding: 15px;
}
.smtp-info h4 {
  margin: 0 0 10px 0;
  font-size: 1rem;
  color: var(--gray-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}
.smtp-info p {
  margin: 8px 0;
  font-size: 14px;
  color: var(--gray);
}
.smtp-info strong {
  color: var(--gray-dark);
}
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  .main-content {
    padding: 20px 15px;
  }
  .recipient-inputs {
    grid-template-columns: 1fr;
  }
  .config-grid {
    grid-template-columns: 1fr;
  }
  .action-buttons {
    flex-direction: column;
  }
  .modal-content {
    width: 95%;
    margin: 10px;
  }
  .logo h1 {
    font-size: 1.8rem;
  }
  .recipients-list {
    grid-template-columns: 1fr;
  }
  .optional-fields-list {
    grid-template-columns: 1fr;
  }
}