/* MechDog 파이썬 학습 - 공통 스타일 */

/* 기본 페이지 스타일 */
body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-family: 'Noto Sans KR', sans-serif;
    min-height: 100vh;
}

/* CodeMirror 커스터마이징 */
.CodeMirror {
    height: 300px;
    border-radius: 12px;
    border: 2px solid #404040;
    font-family: 'Fira Code', 'Monaco', 'Cascadia Code', monospace;
    font-size: 14px;
    line-height: 1.5;
    transition: all 0.3s ease;
    resize: vertical;
    overflow: hidden;
    min-height: 200px;
    max-height: 600px;
}

.CodeMirror:hover {
    border-color: #00d9ff;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

.CodeMirror-focused {
    border-color: #00d9ff !important;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3) !important;
}

/* 라인 번호 스타일 */
.CodeMirror-linenumber {
    color: #6272a4;
    font-size: 13px;
}

/* 선택된 라인 하이라이트 */
.CodeMirror-activeline-background {
    background: rgba(255, 255, 255, 0.1) !important;
}

/* CodeMirror 스크롤바 설정 - 가로만 제거, 세로는 유지 */
.CodeMirror-scroll {
    overflow-x: hidden !important;
    overflow-y: auto !important;
}

/* 가로 스크롤바만 숨기기 */
.CodeMirror-hscrollbar {
    display: none !important;
}

.CodeMirror-scrollbar-filler,
.CodeMirror-gutter-filler {
    display: none !important;
}

/* 세로 스크롤바 스타일링 */
.CodeMirror-vscrollbar::-webkit-scrollbar {
    width: 8px;
}

.CodeMirror-vscrollbar::-webkit-scrollbar-track {
    background: #1f2937;
    border-radius: 4px;
}

.CodeMirror-vscrollbar::-webkit-scrollbar-thumb {
    background: #4b5563;
    border-radius: 4px;
}

.CodeMirror-vscrollbar::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}

/* 기존 textarea 스타일 (CodeMirror 미적용 시 백업) */
.code-editor {
    background: #1e1e1e;
    color: #d4d4d4;
    border-radius: 12px;
    padding: 1.5rem;
    font-family: 'Fira Code', 'Monaco', 'Cascadia Code', monospace;
    font-size: 14px;
    border: 2px solid #404040;
    transition: all 0.3s ease;
    resize: vertical;
    min-height: 200px;
    max-height: 600px;
}

.code-editor:focus {
    outline: none;
    border-color: #00d9ff;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

/* 출력 패널 */
.output-panel {
    background: #0d1117;
    color: #e6edf3;
    border-radius: 12px;
    padding: 1.5rem;
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    min-height: 200px;
    max-height: 600px;
    border: 2px solid #30363d;
    white-space: pre-wrap;
    overflow-y: auto;
    resize: vertical;
}

/* 레슨 카드 */
.lesson-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* 퀴즈 옵션 */
.quiz-option {
    background: #f3f4f6;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    padding: 1rem;
    margin: 0.5rem 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quiz-option:hover {
    background: #e5e7eb;
    transform: translateX(8px);
}

.quiz-option.correct {
    background: #dcfce7;
    border-color: #16a34a;
    color: #166534;
}

.quiz-option.incorrect {
    background: #fee2e2;
    border-color: #dc2626;
    color: #991b1b;
}

/* 버튼 스타일 개선 */
.btn-primary {
    background: linear-gradient(45deg, #10b981, #059669);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(45deg, #059669, #047857);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
    background: linear-gradient(45deg, #3b82f6, #2563eb);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: linear-gradient(45deg, #2563eb, #1d4ed8);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-warning {
    background: linear-gradient(45deg, #f59e0b, #d97706);
    transition: all 0.3s ease;
}

.btn-warning:hover {
    background: linear-gradient(45deg, #d97706, #b45309);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.btn-danger {
    background: linear-gradient(45deg, #ef4444, #dc2626);
    transition: all 0.3s ease;
}

.btn-danger:hover {
    background: linear-gradient(45deg, #dc2626, #b91c1c);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

/* 에디터 기능 설명 박스 */
.editor-info {
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: #6b7280;
    background-color: #f9fafb;
    padding: 0.75rem;
    border-radius: 0.5rem;
}

.editor-info .font-semibold {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.editor-info ul {
    list-style: none;
    padding: 0;
}

.editor-info li {
    margin: 0.25rem 0;
}

/* 반응형 디자인 개선 */
@media (max-width: 768px) {
    .CodeMirror {
        height: 250px;
    }
    
    .output-panel {
        min-height: 250px;
    }
    
    .lesson-card {
        padding: 1.5rem;
    }
}

/* 애니메이션 효과 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.lesson-card {
    animation: fadeInUp 0.6s ease-out;
}

/* 추가 유틸리티 클래스 */
.syntax-highlight-blue { color: #3b82f6; }
.syntax-highlight-green { color: #10b981; }
.syntax-highlight-gray { color: #6b7280; }
.syntax-highlight-purple { color: #8b5cf6; }
.syntax-highlight-yellow { color: #f59e0b; }
.syntax-highlight-red { color: #ef4444; }

/* 스크롤바 스타일 */
.output-panel::-webkit-scrollbar {
    width: 8px;
}

.output-panel::-webkit-scrollbar-track {
    background: #1f2937;
    border-radius: 4px;
}

.output-panel::-webkit-scrollbar-thumb {
    background: #4b5563;
    border-radius: 4px;
}

.output-panel::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}

/* 로딩 애니메이션 */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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