/* CSS Variables for Themes */
:root {
    /* UI Fonts */
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', Courier, monospace;

    /* Theme: White (Default) */
    --bg-main: #ffffff;
    --bg-toolbar: #f3f3f3;
    --bg-tab-bar: #e5e5e5;
    --bg-tab: #d1d1d1;
    --bg-tab-active: #ffffff;
    --text-main: #333333;
    --text-muted: #666666;
    --border-color: #cccccc;
    --accent: #0078d4;
    --btn-hover: #e0e0e0;
}

[data-theme="dark"] {
    --bg-main: #1e1e1e;
    --bg-toolbar: #333333;
    --bg-tab-bar: #252526;
    --bg-tab: #2d2d2d;
    --bg-tab-active: #1e1e1e;
    --text-main: #cccccc;
    --text-muted: #999999;
    --border-color: #444444;
    --accent: #007fd4;
    --btn-hover: #4d4d4d;
}

[data-theme="monokai"] {
    --bg-main: #272822;
    /* Monokai base */
    --bg-toolbar: #1e1f1c;
    --bg-tab-bar: #171814;
    --bg-tab: #34352f;
    --bg-tab-active: #272822;
    --text-main: #f8f8f2;
    --text-muted: #8f908a;
    --border-color: #49483e;
    --accent: #a6e22e;
    --btn-hover: #49483e;
}

[data-theme="solarized-light"] {
    --bg-main: #fdf6e3;
    --bg-toolbar: #eee8d5;
    --bg-tab-bar: #e2dcc5;
    --bg-tab: #d4cfb9;
    --bg-tab-active: #fdf6e3;
    --text-main: #657b83;
    --text-muted: #93a1a1;
    --border-color: #ccc4b0;
    --accent: #268bd2;
    --btn-hover: #dfd8c4;
}

[data-theme="solarized-dark"] {
    --bg-main: #002b36;
    --bg-toolbar: #073642;
    --bg-tab-bar: #001f27;
    --bg-tab: #052c36;
    --bg-tab-active: #002b36;
    --text-main: #839496;
    --text-muted: #586e75;
    --border-color: #073642;
    --accent: #2aa198;
    --btn-hover: #0b4554;
}

/* Global Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    width: 100%;
    overflow: hidden;
    font-family: var(--font-ui);
    background-color: var(--bg-main);
    color: var(--text-main);
    transition: background-color 0.2s, color 0.2s;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Zen Mode Additions */
body.zen-mode .toolbar,
body.zen-mode .tab-bar,
body.zen-mode .status-bar {
    display: none !important;
}

body.zen-mode .content-area {
    padding: 20px 10%;
    background-color: var(--bg-main);
}

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 48px;
    background-color: var(--bg-toolbar);
    border-bottom: 1px solid var(--border-color);
    padding: 0 16px;
    flex-shrink: 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.toolbar::-webkit-scrollbar {
    display: none;
}

.toolbar-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 16px;
    color: var(--text-main);
    margin-right: 12px;
}

.toolbar-brand i {
    font-size: 20px;
    color: var(--accent);
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.toolbar button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: transparent;
    border: none;
    color: var(--text-main);
    width: 32px;
    height: 32px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    transition: background 0.1s;
}

.toolbar button:hover {
    background-color: var(--btn-hover);
}

.toolbar button.active {
    background-color: var(--accent);
    color: #fff;
}

.toolbar button.toggle-btn {
    width: auto;
    padding: 0 12px;
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 500;
}

.divider {
    width: 1px;
    height: 24px;
    background-color: var(--border-color);
    margin: 0 4px;
}

/* ==========================================
 * [v2.4.0] Feature: Word Wrap 슬라이딩 토글 스위치
 * iOS/Android 스타일의 좌우 슬라이드 전환 스위치
 * ========================================== */

/* 토글 스위치 컨테이너: 레이블과 스위치를 수평 배치 */
.wrap-toggle-container {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

/* 토글 레이블 텍스트 */
.wrap-toggle-label {
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    user-select: none;
    transition: color 0.2s;
}

/* 토글 활성 시 레이블 강조 */
.wrap-toggle-container:has(input:checked) .wrap-toggle-label {
    color: var(--accent);
}

/* 토글 스위치 본체 (트랙) */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
    cursor: pointer;
    flex-shrink: 0;
}

/* 실제 체크박스는 숨김 */
.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

/* 슬라이더 트랙 (OFF 상태) */
.toggle-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    border-radius: 20px;
    transition: background-color 0.25s ease;
}

/* 슬라이더 원형 핀 (OFF 위치: 좌측) */
.toggle-slider::before {
    content: '';
    position: absolute;
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: #ffffff;
    border-radius: 50%;
    transition: transform 0.25s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* ON 상태: 트랙 색상을 accent 컬러로 변환 */
.toggle-switch input:checked+.toggle-slider {
    background-color: var(--accent);
}

/* ON 상태: 핀을 우측으로 슬라이드 (36px - 14px - 3px*2 = 16px) */
.toggle-switch input:checked+.toggle-slider::before {
    transform: translateX(16px);
}

/* 호버 시 시각적 피드백 */
.toggle-switch:hover .toggle-slider {
    background-color: var(--text-muted);
}

.toggle-switch:hover input:checked+.toggle-slider {
    filter: brightness(1.15);
}

/* [v2.6.0] select 드롭다운 명도 대비 수정
   이전: background: transparent → 다크 테마에서 하얀 배경에 밝은 글자가 겹쳐 보이지 않음
   수정: 툴바 배경색 명시 적용 + option 태그에도 테마 변수 강제 주입 */
.theme-selector select {
    background-color: var(--bg-toolbar);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 8px;
    font-family: var(--font-ui);
    font-size: 13px;
    outline: none;
    cursor: pointer;
}

.theme-selector select option {
    background-color: var(--bg-main);
    color: var(--text-main);
}

/* Tab Bar */
.tab-bar {
    display: flex;
    align-items: flex-end;
    height: 40px;
    background-color: var(--bg-tab-bar);
    border-bottom: 1px solid var(--border-color);
    padding: 0 8px;
    flex-shrink: 0;
}

.tabs {
    display: flex;
    height: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 34px;
    margin-top: 6px;
    padding: 0 12px 0 16px;
    background-color: var(--bg-tab);
    color: var(--text-muted);
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    border: 1px solid transparent;
    border-bottom: none;
    cursor: pointer;
    min-width: 120px;
    max-width: 200px;
    user-select: none;
    font-size: 13px;
    transition: opacity 0.15s, border-color 0.15s;
}

/* [v2.6.0] 탭 드래그&드롭 시각적 피드백 */
.tab.dragging {
    opacity: 0.4;
}

.tab.drag-over {
    border-left: 2px solid var(--accent);
}

.tab:hover {
    background-color: var(--btn-hover);
}

.tab.active {
    background-color: var(--bg-tab-active);
    color: var(--text-main);
    border-color: var(--border-color);
    position: relative;
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--bg-tab-active);
}

.tab-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-grow: 1;
}

.tab-title.modified::after {
    content: " *";
    color: var(--accent);
}

.tab-title.readonly::before {
    content: "🔒 ";
    font-size: 11px;
}

.tab-close {
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tab-close:hover {
    background-color: rgba(255, 0, 0, 0.1);
    color: #ff4444;
}

.add-tab {
    background: transparent;
    border: none;
    color: var(--text-muted);
    width: 28px;
    height: 28px;
    margin: 6px 4px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.add-tab:hover {
    background-color: var(--btn-hover);
    color: var(--text-main);
}

/* Editor & Preview Workspace */
.content-area {
    display: flex;
    flex-grow: 1;
    overflow: hidden;
    position: relative;
}

/* [v2.7.0] 파일 드래그&드롭 시각적 피드백 */
.content-area.file-drop-active::after {
    content: '📂 파일을 여기에 놓으세요';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 120, 212, 0.15);
    border: 2px dashed var(--accent);
    border-radius: 8px;
    color: var(--accent);
    font-family: var(--font-ui);
    font-size: 18px;
    font-weight: 600;
    z-index: 999;
    pointer-events: none;
}

.editor-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    /* fixes flex shrink child rendering bug */
}

/* CodeMirror 6 Overrides */
.cm-editor {
    flex: 1;
    width: 100%;
    height: 100%;
    font-family: var(--font-mono) !important;
    font-size: 14px;
    line-height: 1.6;
    background: transparent !important;
    color: var(--text-main) !important;
}

.cm-editor.cm-focused {
    outline: none !important;
}

.cm-scroller {
    font-family: var(--font-mono) !important;
    overflow: auto;
    padding-top: 10px;
}

.cm-gutters {
    background-color: var(--bg-toolbar) !important;
    border-right: 1px solid var(--border-color) !important;
    color: var(--text-muted) !important;
}

.cm-activeLineGutter {
    background-color: var(--bg-tab) !important;
}

.cm-cursor,
.cm-dropCursor {
    border-left-color: var(--accent) !important;
}

.cm-selectionBackground,
.cm-editor.cm-focused .cm-selectionBackground {
    background: rgba(0, 120, 212, 0.45) !important;
}

.cm-activeLine {
    background-color: rgba(0, 0, 0, 0.05) !important;
}

[data-theme="dark"] .cm-activeLine,
[data-theme="monokai"] .cm-activeLine,
[data-theme="solarized-dark"] .cm-activeLine {
    background-color: rgba(255, 255, 255, 0.05) !important;
}

/* ==========================================
 * [v2.3.0] Feature: Minimap (Scroll Miniview)
 * @replit/codemirror-minimap 커스텀 스타일
 * VS Code 스타일의 우측 축소 코드 미니뷰
 * ========================================== */

/* 미니맵 컨테이너: 에디터 우측에 고정 배치 */
.cm-minimap {
    background-color: var(--bg-toolbar) !important;
    border-left: 1px solid var(--border-color) !important;
    opacity: 0.85;
    transition: opacity 0.2s ease;
}

/* 마우스 호버 시 미니맵 선명도 향상 */
.cm-minimap:hover {
    opacity: 1;
}

/* 뷰포트 오버레이: 현재 보이는 영역을 반투명 사각형으로 표시 */
.cm-minimap-overlay {
    background-color: rgba(0, 120, 212, 0.15) !important;
    border: 1px solid rgba(0, 120, 212, 0.3) !important;
    border-radius: 2px;
    transition: background-color 0.15s ease;
}

/* 오버레이 호버 시 더 진한 강조 */
.cm-minimap-overlay:hover {
    background-color: rgba(0, 120, 212, 0.25) !important;
}

/* 다크 테마 계열 미니맵 오버레이 색상 조정 */
[data-theme="dark"] .cm-minimap-overlay,
[data-theme="monokai"] .cm-minimap-overlay,
[data-theme="solarized-dark"] .cm-minimap-overlay {
    background-color: rgba(100, 180, 255, 0.12) !important;
    border-color: rgba(100, 180, 255, 0.25) !important;
}

[data-theme="dark"] .cm-minimap-overlay:hover,
[data-theme="monokai"] .cm-minimap-overlay:hover,
[data-theme="solarized-dark"] .cm-minimap-overlay:hover {
    background-color: rgba(100, 180, 255, 0.22) !important;
}

/* Monokai 테마 미니맵 특수 강조 (형광 그린 포인트) */
[data-theme="monokai"] .cm-minimap-overlay {
    border-color: rgba(166, 226, 46, 0.3) !important;
}

/* Print Rules */
/* [4차 감사 1] 다중 페이지 인쇄 지원: 최상위 컨테이너 높이 제한 해제 */
@media print {

    /* SPA 웹앱의 전형적 인쇄 버그 수정:
       height: 100%와 overflow: hidden이 걸린 래퍼들이
       프린트 스풀러에서 1페이지로 강제 크롭되는 문제 해결 */
    html,
    body,
    .app-container,
    .content-area {
        height: auto !important;
        overflow: visible !important;
    }

    .toolbar,
    .tab-bar,
    .status-bar,
    .editor-wrapper {
        display: none !important;
    }

    .markdown-preview {
        display: block !important;
        width: 100% !important;
        border: none !important;
        overflow: visible !important;
        background: #fff !important;
        color: #000 !important;
    }
}

/* [v2.7.0] 마크다운 Floating TOC (목차) */
.md-toc {
    width: 200px;
    min-width: 200px;
    height: 100%;
    overflow-y: auto;
    padding: 12px 8px;
    border-left: 1px solid var(--border-color);
    background-color: var(--bg-toolbar);
    font-family: var(--font-ui);
    font-size: 12px;
    scrollbar-width: thin;
}

.md-toc.hidden {
    display: none;
}

.md-toc-title {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-main);
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
}

.md-toc-item {
    padding: 3px 6px;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background 0.1s, color 0.1s;
}

.md-toc-item:hover {
    background-color: var(--btn-hover);
    color: var(--accent);
}

/* 헤딩 레벨별 들여쓰기 */
.md-toc-h1 {
    padding-left: 6px;
    font-weight: 600;
    color: var(--text-main);
}

.md-toc-h2 {
    padding-left: 16px;
    font-weight: 500;
}

.md-toc-h3 {
    padding-left: 26px;
}

.md-toc-h4 {
    padding-left: 36px;
    font-size: 11px;
}

.md-toc-h5 {
    padding-left: 46px;
    font-size: 11px;
}

.md-toc-h6 {
    padding-left: 56px;
    font-size: 11px;
}

/* Markdown Styles inside Preview */
.markdown-preview {
    flex: 1;
    width: 50%;
    height: 100%;
    overflow-y: auto;
    padding: 16px 32px;
    border-left: 1px solid var(--border-color);
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-ui);
    line-height: 1.6;
}

.markdown-preview.hidden {
    display: none;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3,
.markdown-preview h4,
.markdown-preview h5,
.markdown-preview h6 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.25;
}

.markdown-preview h1 {
    font-size: 2em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border-color);
}

.markdown-preview h2 {
    font-size: 1.5em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border-color);
}

.markdown-preview p {
    margin-bottom: 16px;
}

.markdown-preview code {
    padding: 0.2em 0.4em;
    font-size: 85%;
    background-color: var(--bg-toolbar);
    border-radius: 6px;
    font-family: var(--font-mono);
}

.markdown-preview pre {
    padding: 16px;
    overflow: auto;
    font-size: 85%;
    line-height: 1.45;
    background-color: var(--bg-toolbar);
    border-radius: 6px;
    margin-bottom: 16px;
}

.markdown-preview pre code {
    background-color: transparent;
    padding: 0;
}

.markdown-preview blockquote {
    padding: 0 1em;
    color: var(--text-muted);
    border-left: 0.25em solid var(--border-color);
    margin-bottom: 16px;
}

/* Status Bar */
.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 24px;
    background-color: var(--accent);
    color: #ffffff;
    padding: 0 16px;
    font-size: 12px;
    flex-shrink: 0;
}

.status-bar .status-right {
    display: flex;
    gap: 16px;
}

/* ==========================================
 * Feature: Custom Search Modal (Floating API)
 * ========================================== */
.search-modal {
    position: absolute;
    top: 10px;
    right: 20px;
    width: 320px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    font-family: var(--font-ui);
    overflow: hidden;
    transition: opacity 0.2s, transform 0.2s;
}

.search-modal.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
}

.search-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 12px;
    background-color: var(--bg-toolbar);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
}

.search-header .icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    border-radius: 4px;
    padding: 2px;
}

.search-header .icon-btn:hover {
    background-color: var(--btn-hover);
    color: var(--accent);
}

.search-body {
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.search-row {
    display: flex;
    gap: 6px;
    align-items: center;
}

.search-row input[type="text"] {
    flex-grow: 1;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 13px;
    outline: none;
}

.search-row input[type="text"]:focus {
    border-color: var(--accent);
}

.search-row .icon-btn,
.search-row button {
    background-color: var(--bg-toolbar);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    cursor: pointer;
    border-radius: 4px;
    padding: 4px 6px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
}

.search-row button:hover,
.search-row .icon-btn:hover {
    background-color: var(--btn-hover);
    color: var(--accent);
    border-color: var(--accent);
}

.search-info {
    font-size: 12px;
    color: var(--text-muted);
    text-align: right;
    min-height: 14px;
}

/* ==========================================
 * Feature: Mobile Responsive Layout Updates
 * ========================================== */
@media (max-width: 768px) {

    /* Make toolbar scrollable and compact */
    .toolbar {
        padding: 0 8px;
        height: 44px;
    }

    .toolbar button {
        width: 36px;
        /* Slightly larger targets for touch */
        height: 36px;
    }

    /* Make tab bar more compact */
    .tab-bar {
        padding: 0 4px;
        height: 36px;
    }

    .tab {
        height: 30px;
        margin-top: 6px;
        min-width: 90px;
        padding: 0 8px;
        font-size: 12px;
    }

    .tab-close {
        width: 18px;
        height: 18px;
    }

    /* Floating search modal responsive */
    .search-modal {
        width: 90%;
        left: 5%;
        right: 5%;
        top: 8px;
    }

    /* Make status bar font smaller */
    .status-bar {
        padding: 0 8px;
        font-size: 10px;
    }

    .status-bar .status-right {
        gap: 8px;
    }
}