:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #f72585;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --success-color: #4cc9f0;
    --warning-color: #f9c74f;
    --danger-color: #f94144;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: "Pretendard", "Apple SD Gothic Neo", sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f0f2f5;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
  }
  
  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  
  /* 헤더 스타일 */
  header {
    background: linear-gradient(
      135deg,
      var(--primary-color),
      var(--secondary-color)
    );
    color: white;
    padding: 2rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom-left-radius: 30px;
    border-bottom-right-radius: 30px;
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
  }
  
  header::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
      circle,
      rgba(255, 255, 255, 0.1) 0%,
      rgba(255, 255, 255, 0) 70%
    );
    animation: pulse 15s infinite linear;
    z-index: 0;
  }
  
  @keyframes pulse {
    0% {
      transform: translate(0, 0) scale(1);
    }
    50% {
      transform: translate(5%, 5%) scale(1.05);
    }
    100% {
      transform: translate(0, 0) scale(1);
    }
  }
  
  .header-content {
    position: relative;
    z-index: 1;
  }
  
  h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    font-weight: 800;
  }
  
  .subtitle {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
  }
  
  .logo-icon {
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
    display: inline-block;
  }

  .logo-image {
    width: auto;
    height: 60px; /* BSD 로고에 맞게 크기 조정 */
    object-fit: contain;
    filter: brightness(1); /* 흰색 로고가 잘 보이도록 설정 */
  }
  
  @keyframes bounce {
    0%,
    20%,
    50%,
    80%,
    100% {
      transform: translateY(0);
    }
    40% {
      transform: translateY(-20px);
    }
    60% {
      transform: translateY(-10px);
    }
  }
  
  /* 메인 컨텐츠 스타일 */
  main {
    padding: 0 0 2rem 0;
  }
  
  .card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
    overflow: hidden;
    transition: var(--transition);
  }
  
  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
  }
  
  .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background-color: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    cursor: pointer;
  }
  
  .card-header h2 {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: var(--primary-color);
  }
  
  .card-header h2 i {
    margin-right: 0.75rem;
    font-size: 1.5rem;
    color: var(--accent-color);
  }
  
  .toggle-icon {
    color: var(--primary-color);
    transition: var(--transition);
  }
  
  .card-body {
    padding: 1.5rem;
    display: none;
  }
  
  .card.active .card-body {
    display: block;
    animation: fadeIn 0.5s ease;
  }
  
  .card.active .toggle-icon {
    transform: rotate(180deg);
  }
  
  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* 폼 요소 스타일 */
  .form-group {
    margin-bottom: 1.5rem;
  }
  
  .form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-color);
  }
  
  .form-control {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid #ced4da;
    border-radius: var(--border-radius);
    transition: var(--transition);
  }
  
  .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(67, 97, 238, 0.25);
    outline: none;
  }
  
  /* 버튼 스타일 */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    border: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    background-color: var(--primary-color);
    color: white;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
  }
  
  .btn i {
    margin-right: 0.5rem;
  }
  
  .btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
  }
  
  .btn-primary {
    background-color: var(--primary-color);
  }
  
  .btn-secondary {
    background-color: var(--secondary-color);
  }
  
  .btn-accent {
    background-color: var(--accent-color);
  }
  
  .btn-success {
    background-color: var(--success-color);
  }
  
  .btn-warning {
    background-color: var(--warning-color);
    color: var(--dark-color);
  }
  
  .btn-danger {
    background-color: var(--danger-color);
  }
  
  /* 이미지 업로드 영역 */
  .upload-options {
    display: grid;
    gap: 1.5rem;
  }
  
  .upload-option {
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 2px dashed #dee2e6;
    transition: var(--transition);
  }
  
  .upload-option:hover {
    border-color: var(--primary-color);
  }
  
  .file-upload {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    cursor: pointer;
  }
  
  .file-upload i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
  }
  
  .file-upload input[type="file"] {
    display: none;
  }
  
  .sample-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
  }
  
  .sample-image {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
  }
  
  .sample-image:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
  }
  
  .url-input {
    display: flex;
    gap: 0.5rem;
  }
  
  .url-input .form-control {
    flex: 1;
  }
  
  .accept {
    display: inline-flex;
    align-items: center;
    color: #10b981;
    font-weight: 500;
    margin-left: 0.5rem;
    opacity: 0;
    transition: var(--transition);
  }
  
  .accept.show {
    opacity: 1;
    animation: fadeInRight 0.5s ease;
  }
  
  @keyframes fadeInRight {
    from {
      opacity: 0;
      transform: translateX(-20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
  
  /* 이미지 맵 편집 영역 */
  .controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    align-items: center;
  }
  
  .control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .drawing-area {
    position: relative;
    overflow: auto;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    background-color: #fff;
    min-height: 300px;
    margin-top: 1.5rem;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.1);
  }
  
  #image-container {
    position: relative;
  }
  
  #image-container img {
    display: block;
    max-width: 100%;
  }
  
  .region {
    position: absolute;
    border: 2px solid var(--accent-color);
    background-color: rgba(247, 37, 133, 0.2);
    cursor: move;
    border-radius: 3px;
    transition: var(--transition);
  }
  
  .region.active {
    border-color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.2);
    z-index: 10;
  }
  
  .region-label {
    position: absolute;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    z-index: 5;
    transform: translate(-50%, -50%);
  }
  
  /* 테이블 스타일 */
  .table-responsive {
    overflow-x: auto;
    margin-bottom: 1.5rem;
  }
  
  table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
  }
  
  th,
  td {
    padding: 0.75rem;
  }
  
  thead {
    background-color: #f8f9fa;
  }
  
  th {
    font-weight: 600;
    color: var(--dark-color);
    border-bottom: 2px solid #dee2e6;
  }
  
  td {
    border-bottom: 1px solid #dee2e6;
  }
  
  tbody tr {
    transition: var(--transition);
  }
  
  tbody tr:hover {
    background-color: rgba(67, 97, 238, 0.05);
  }
  
  tbody tr.active {
    background-color: rgba(67, 97, 238, 0.1);
  }
  
  /* 코드 영역 */
  .code-container {
    position: relative;
  }
  
  .code-area {
    width: 100%;
    min-height: 150px;
    padding: 1rem;
    font-family: "Consolas", "Monaco", monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #f8f9fa;
    background-color: #212529;
    border: none;
    border-radius: var(--border-radius);
    resize: vertical;
  }
  
  .copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.5rem;
    background-color: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 4px;
    color: white;
    cursor: pointer;
    transition: var(--transition);
  }
  
  .copy-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
  }
  
  /* 미리보기 영역 */
  #preview-container {
    margin-top: 1rem;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    overflow: hidden;
  }
  
  #preview-container img {
    display: block;
    max-width: 100%;
  }
  
  /* 상태 메시지 */
  #status {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    background-color: #e9ecef;
    transition: var(--transition);
  }
  
  #status.success {
    background-color: rgba(16, 185, 129, 0.2);
    color: #065f46;
  }
  
  #status.warning {
    background-color: rgba(245, 158, 11, 0.2);
    color: #92400e;
  }
  
  #status.error {
    background-color: rgba(239, 68, 68, 0.2);
    color: #b91c1c;
  }
  
  /* 툴팁 */
  .tooltip {
    position: relative;
    display: inline-block;
  }
  
  .tooltip .tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: 0.5rem;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
  }
  
  .tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
  }
  
  /* 그리기 모드 커서 */
  .drawing-mode {
    cursor: crosshair !important;
  }
  
  /* 반응형 스타일 */
  @media (max-width: 991px) {
    .container {
      padding: 0 15px;
    }
  
    .card-header h2 {
      font-size: 1.1rem;
    }
  
    .controls {
      flex-direction: column;
      align-items: flex-start;
    }
  
    .control-group {
      width: 100%;
    }
  }
  
  @media (max-width: 767px) {
    h1 {
      font-size: 2rem;
    }
  
    .sample-container {
      grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
  
    .url-input {
      flex-direction: column;
    }
  
    .url-input .btn {
      width: 100%;
    }
  
    th,
    td {
      padding: 0.5rem;
    }
  }
  
  @media (max-width: 575px) {
    .card-header h2 {
      font-size: 1rem;
    }
  
    .btn {
      width: 100%;
      margin-right: 0;
    }
  
    .upload-option {
      padding: 1rem;
    }
  }
  
  /* 파일 업로드 하이라이트 스타일 */
  .file-upload.highlight {
    border-color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.05);
  }

  /* 광고 배너 스타일 */
  .ad-banner-top,
  .ad-banner-middle,
  .ad-banner-bottom {
    width: 100%;
    max-width: 100%;
    margin: 20px 0;
    text-align: center;
    background: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
  }

  .ad-banner-top {
    margin-top: 0;
    margin-bottom: 30px;
  }

  .ad-banner-middle {
    margin: 40px 0;
  }

  .ad-banner-bottom {
    margin-top: 30px;
    margin-bottom: 0;
  }

  /* 광고 배너 hover 효과 */
  .ad-banner-top:hover,
  .ad-banner-middle:hover,
  .ad-banner-bottom:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  }

  /* 광고 컨테이너 스타일 */
  .ad-container {
    width: 100%;
    max-width: 100%;
    margin: 30px auto;
    text-align: center;
    background: #ffffff;
    border: 1px solid #e9ecef;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .ad-container:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  }

  .ad-container .adsbygoogle {
    display: block !important;
    width: 100%;
    min-height: 200px;
  }

  /* 광고 사이의 컨텐츠 여백 조정 */
  .card {
    margin-bottom: 2rem;
  }

  .card + .card {
    margin-top: 2rem;
  }

  /* 모바일 광고 최적화 */
  @media (max-width: 768px) {
    .ad-banner-top,
    .ad-banner-middle,
    .ad-banner-bottom {
      margin: 15px 0;
      padding: 10px;
    }

    .ad-banner-middle {
      margin: 25px 0;
    }

    .ad-container {
      margin: 20px auto;
      padding: 15px;
      min-height: 200px;
    }

    .ad-container .adsbygoogle {
      min-height: 150px;
    }
  }

  /* 광고 로딩 상태 표시 */
  .ad-banner-top ins,
  .ad-banner-middle ins,
  .ad-banner-bottom ins {
    min-height: 100px;
    display: block;
  }

  /* 데스크톱에서 최적 여백 */
  @media (min-width: 1200px) {
    .ad-banner-top,
    .ad-banner-middle,
    .ad-banner-bottom {
      max-width: 728px;
      margin-left: auto;
      margin-right: auto;
    }
  }