document-server/frontend/static/css/main.css

/* 메인 스타일 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding-top: 4rem; /* 고정 헤더를 위한 패딩 */
}

/* 알림 애니메이션 */
.notification {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 로딩 스피너 */
.loading-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 카드 호버 효과 */
.card-hover {
    transition: all 0.2s ease-in-out;
}

.card-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* 태그 스타일 */
.tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    background-color: #dbeafe;
    color: #1e40af;
}

/* 검색 입력 포커스 */
.search-input:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 드롭다운 애니메이션 */
.dropdown-enter {
    opacity: 0;
    transform: scale(0.95);
}

.dropdown-enter-active {
    opacity: 1;
    transform: scale(1);
    transition: opacity 150ms ease-out, transform 150ms ease-out;
}

/* 모달 배경 */
.modal-backdrop {
    backdrop-filter: blur(4px);
}

/* 파일 드롭 영역 */
.file-drop-zone {
    border: 2px dashed #d1d5db;
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.2s ease-in-out;
}

.file-drop-zone.dragover {
    border-color: #3b82f6;
    background-color: #eff6ff;
}

.file-drop-zone:hover {
    border-color: #6b7280;
}

/* 반응형 그리드 */
@media (max-width: 768px) {
    .grid-responsive {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .grid-responsive {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) {
    .grid-responsive {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 스크롤바 스타일링 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* 텍스트 줄임표 */
.text-ellipsis {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 라인 클램프 유틸리티 */
.line-clamp-1 {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 포커스 링 제거 */
.focus-visible:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px #3b82f6;
}

/* 버튼 상태 */
.btn-primary {
    background-color: #3b82f6;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: background-color 0.2s ease-in-out;
}

.btn-primary:hover {
    background-color: #2563eb;
}

.btn-primary:disabled {
    background-color: #9ca3af;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: #6b7280;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: background-color 0.2s ease-in-out;
}

.btn-secondary:hover {
    background-color: #4b5563;
}

/* 입력 필드 스타일 */
.input-field {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.input-field:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-field:invalid {
    border-color: #ef4444;
}

/* 에러 메시지 */
.error-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* 성공 메시지 */
.success-message {
    color: #10b981;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* 로딩 오버레이 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* 빈 상태 일러스트레이션 */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-state i {
    font-size: 4rem;
    color: #9ca3af;
    margin-bottom: 1rem;
}

.empty-state h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: #6b7280;
    margin-bottom: 1.5rem;
}