/**
 * 마크다운 렌더링 고급 스타일
 * CSS 변수로 간격 조절 가능 (user-settings.js에서 설정)
 */

/* ==================== CSS 변수 기본값 ==================== */
:root {
    /* 마크다운 간격 기본값 (user-settings.js에서 덮어씀) */
    --md-paragraph-margin: 8px;
    --md-paragraph-line-height: 1.6;
    --md-list-margin: 8px;
    --md-list-item-margin: 4px;
    --md-list-line-height: 1.5;
    --md-heading-margin-top: 16px;
    --md-heading-margin-bottom: 8px;
    --md-code-block-margin: 12px;
    --md-blockquote-margin: 12px;
    --md-table-margin: 12px;
    --md-hr-margin: 16px;
    
    /* 폰트 크기 기본값 */
    --md-font-size-base: 0.95rem;
    --md-font-size-code: 0.9em;
    --md-font-size-inline-code: 0.88em;
    --md-font-size-table: 0.9em;
    
    /* 기타 */
    --message-max-width: 85%;
}

/* ==================== 코드 하이라이팅 커스터마이징 ==================== */

.message-content pre {
    position: relative;
    background: #282c34 !important;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin: var(--md-code-block-margin) 0;
    overflow-x: auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.light-mode .message-content pre {
    background: #f6f8fa !important;
    border-color: #d0d7de;
}

.message-content pre code.hljs {
    background: transparent;
    padding: 0;
    font-size: var(--md-font-size-code);
    line-height: 1.6;
    display: block;
    color: #abb2bf;
}

.light-mode .message-content pre code.hljs {
    color: #24292f;
}

/* 인라인 코드 개선 */
.message-content code:not(.hljs):not(pre code) {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: var(--md-font-size-inline-code);
    font-weight: 500;
    border: 1px solid var(--border);
}

/* ==================== 코드 언어 라벨 ==================== */

.message-content pre::before {
    content: attr(data-language);
    position: absolute;
    top: 0;
    right: 0;
    padding: 4px 12px;
    font-size: 0.7em;
    color: var(--text-tertiary);
    background: rgba(0, 0, 0, 0.3);
    border-radius: 0 8px 0 8px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 1px;
}

.light-mode .message-content pre::before {
    background: rgba(0, 0, 0, 0.1);
}

/* ==================== 표(Table) 스타일 개선 ==================== */

.message-content .table-wrapper {
    position: relative;
    overflow-x: auto;
    margin: var(--md-table-margin) 0;
    border-radius: 8px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.message-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--md-font-size-table);
    background: var(--bg-primary);
}

.message-content table thead {
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 1;
}

.message-content table th {
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--accent-primary);
    border-bottom: 2px solid var(--accent-primary);
    white-space: nowrap;
}

.message-content table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.message-content table tbody tr {
    transition: background-color 0.15s ease;
}

.message-content table tbody tr:hover {
    background: var(--bg-secondary);
}

.message-content table tbody tr:last-child td {
    border-bottom: none;
}

.message-content table code {
    font-size: 0.85em;
}

.message-content .table-wrapper::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 40px;
    background: linear-gradient(to right, transparent, var(--bg-primary));
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}

.message-content .table-wrapper.has-scroll::after {
    opacity: 1;
}

/* ==================== 인용구(Blockquote) 스타일 개선 ==================== */

.message-content blockquote,
.message-content .markdown-quote {
    position: relative;
    margin: var(--md-blockquote-margin) 0;
    padding: 12px 16px 12px 20px;
    border-left: 4px solid var(--accent-primary);
    background: var(--bg-secondary);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-secondary);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.message-content blockquote::before {
    content: '"';
    position: absolute;
    left: 6px;
    top: 2px;
    font-size: 2em;
    color: var(--accent-primary);
    opacity: 0.25;
    font-family: Georgia, serif;
    line-height: 1;
}

.message-content blockquote p,
.message-content .markdown-quote p {
    margin: 4px 0;
}

.message-content blockquote p:first-child {
    margin-top: 0;
}

.message-content blockquote p:last-child {
    margin-bottom: 0;
}

.message-content blockquote blockquote {
    margin: 8px 0;
    border-left-color: var(--text-secondary);
    opacity: 0.8;
}

/* ==================== 링크 스타일 개선 ==================== */

.message-content a {
    color: var(--accent-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
    position: relative;
    font-weight: 500;
}

.message-content a:hover {
    border-bottom-color: var(--accent-primary);
    text-shadow: 0 0 8px rgba(16, 185, 129, 0.3);
}

.message-content a[target="_blank"]::after {
    content: '↗';
    font-size: 0.75em;
    margin-left: 3px;
    opacity: 0.6;
}

/* ==================== 체크리스트 스타일 ==================== */

.message-content input[type="checkbox"] {
    margin-right: 8px;
    cursor: pointer;
    accent-color: var(--accent-primary);
}

.message-content li:has(> input[type="checkbox"]) {
    list-style: none;
    margin-left: -24px;
}

.message-content input[type="checkbox"]:checked + * {
    text-decoration: line-through;
    opacity: 0.6;
}

/* ==================== 수평선 개선 ==================== */

.message-content hr {
    border: none;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--border), transparent);
    margin: var(--md-hr-margin) 0;
}

/* ==================== 이미지 스타일 ==================== */

.message-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--md-paragraph-margin) 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* ==================== 리스트 개선 ==================== */

.message-content ul,
.message-content ol {
    margin: var(--md-list-margin) 0;
    padding-left: 24px;
}

.message-content li {
    margin: var(--md-list-item-margin) 0;
    line-height: var(--md-list-line-height);
}

.message-content li > ul,
.message-content li > ol {
    margin-top: var(--md-list-item-margin);
    margin-bottom: var(--md-list-item-margin);
}

.message-content ul ul li {
    list-style-type: circle;
}

.message-content ul ul ul li {
    list-style-type: square;
}

.message-content li code {
    background: var(--bg-tertiary);
    padding: 2px 5px;
}

/* ==================== 타이포그래피 개선 ==================== */

.message-content {
    font-size: var(--md-font-size-base);
}

.message-content p {
    margin: var(--md-paragraph-margin) 0;
    line-height: var(--md-paragraph-line-height);
}

.message-content p:first-child {
    margin-top: 0;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content strong {
    color: var(--accent-primary);
    font-weight: 600;
}

.message-content em {
    color: var(--text-secondary);
    font-style: italic;
}

.message-content del,
.message-content s {
    color: var(--text-tertiary);
    text-decoration: line-through;
}

/* ==================== 헤딩 개선 ==================== */

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin-top: var(--md-heading-margin-top);
    margin-bottom: var(--md-heading-margin-bottom);
    line-height: 1.3;
    color: var(--text-primary);
    font-weight: 600;
}

.message-content h1:first-child,
.message-content h2:first-child,
.message-content h3:first-child,
.message-content h4:first-child {
    margin-top: 0;
}

.message-content h1 {
    font-size: 1.6em;
    font-weight: 700;
    border-bottom: 2px solid var(--accent-primary);
    padding-bottom: 8px;
}

.message-content h2 {
    font-size: 1.4em;
    font-weight: 700;
    border-bottom: 1px solid var(--border);
    padding-bottom: 6px;
}

.message-content h3 {
    font-size: 1.2em;
    color: var(--accent-primary);
}

.message-content h4 {
    font-size: 1.1em;
    color: var(--text-secondary);
}

.message-content h5 {
    font-size: 1.05em;
}

.message-content h6 {
    font-size: 1em;
    opacity: 0.8;
}

/* ==================== 타이핑 인디케이터 ==================== */

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    border-bottom-left-radius: 4px;
    align-self: flex-start;
    max-width: 80px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-8px);
        opacity: 1;
    }
}

/* ==================== 전송 버튼 펄스 애니메이션 ==================== */

.pulse-animation {
    animation: pulseGlow 1s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { box-shadow: 0 0 0 12px rgba(16, 185, 129, 0); }
}

/* ==================== 반응형 디자인 ==================== */

@media (max-width: 768px) {
    .message-content table {
        font-size: 0.85em;
    }

    .message-content table th,
    .message-content table td {
        padding: 8px 10px;
    }

    .message-content h1 { font-size: 1.4em; }
    .message-content h2 { font-size: 1.25em; }
    .message-content h3 { font-size: 1.1em; }

    .message-content pre {
        padding: 12px;
        font-size: 0.85em;
    }

    .message-content blockquote {
        padding: 10px 14px 10px 16px;
    }

    .message-content blockquote::before {
        font-size: 1.8em;
        left: 4px;
    }
}

/* ==================== 스크롤바 스타일링 ==================== */

.message-content .table-wrapper::-webkit-scrollbar,
.message-content pre::-webkit-scrollbar {
    height: 8px;
}

.message-content .table-wrapper::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

.message-content .table-wrapper::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.message-content .table-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.message-content pre::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.message-content pre::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.message-content pre::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.light-mode .message-content pre::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
}

.light-mode .message-content pre::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
}

.light-mode .message-content pre::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* ==================== 애니메이션 ==================== */

.message-content table,
.message-content blockquote,
.message-content pre,
.message-content .table-wrapper {
    animation: fadeInUp 0.3s ease-out;
}

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

/* ==================== 유저 메시지 내 마크다운 보정 ==================== */

.message.user .message-content strong {
    color: inherit;
}

.message.user .message-content a {
    color: inherit;
    border-bottom-color: rgba(255, 255, 255, 0.5);
}

.message.user .message-content a:hover {
    border-bottom-color: white;
    text-shadow: none;
}

.message.user .message-content code:not(.hljs):not(pre code) {
    background: rgba(255, 255, 255, 0.2);
    color: inherit;
    border-color: rgba(255, 255, 255, 0.3);
}