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

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e0e0e0;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #cccccc;
    --accent-color: #4CAF50;
    --accent-hover: #357938;
    --error-color: #f44336;
    --warning-color: #ff9800;
    --info-color: #2196F3;
    --twitter-color: #000000;
    --facebook-color: #1877F2;
    --line-color: #00B900;
}

body.dark-mode {
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --text-primary: #cccccc;
    --text-secondary: #858585;
    --border-color: #3e3e42;
    --accent-color: #4CAF50;
    --accent-hover: #357938;
}

body.dark-mode .mobile-menu {
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
}

body.dark-mode .mobile-menu-overlay {
    background-color: rgba(0, 0, 0, 0.7);
}

body.dark-mode .footer a {
    color: #cccccc;
}

body.dark-mode .footer a:hover {
    color: #999999;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent-color);
}
a:hover {
    color: var(--accent-hover);
}

.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    flex-shrink: 0;
}

.header h1 {
    font-size: 20px;
    font-weight: 600;
}

.header-controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    background-color: var(--accent-color);
    color: white;
    transition: opacity 0.2s;
    white-space: nowrap;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation;
    gap: 6px;
}

.btn:hover {
    opacity: 0.8;
}

.btn:active {
    transform: scale(0.98);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ビューポート切り替えボタン */
.btn-viewport {
    padding: 6px 12px;
    min-width: 40px;
    font-size: 16px;
}

.btn-viewport.active {
    background-color: var(--accent-color);
    color: white;
}

img.emoji {
    height: auto;
    width: 1.2em;
    margin: 0 .05em 0 .1em;
    vertical-align: -0.1em;
}

.container {
    display: flex;
    height: calc(100vh - 90px);
    flex: 1;
    transition: flex-direction 0.3s ease;
}

/* 縦分割レイアウト */
.container.vertical {
    flex-direction: column;
}

.container.vertical .editor-panel {
    min-width: auto;
    min-height: 300px;
}

.container.vertical .preview-panel {
    border-left: none;
    border-top: 2px solid var(--border-color);
    min-width: auto;
    min-height: 300px;
}

.container.vertical .resizer {
    width: 100%;
    height: 5px;
    cursor: row-resize;
}

.editor-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 300px;
}

.tabs {
    display: flex;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.tab {
    padding: 12px 24px;
    cursor: pointer;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

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

.tab.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.editor-container {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.editor {
    display: none;
    height: 100%;
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
}

.editor.active {
    display: block;
    opacity: 1;
}

.CodeMirror {
    height: 100%;
    font-size: 14px;
}

.preview-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-left: 2px solid var(--border-color);
    min-width: 300px;
}

.preview-header {
    background-color: var(--bg-secondary);
    padding: 10px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.preview-header h2 {
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    margin: 0;
}

.preview-controls {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* プレビューラッパー（レスポンシブプレビュー用） */
.preview-wrapper {
    flex: 1;
    overflow: auto;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
}

#preview {
    width: 100%;
    height: 100%;
    border: none;
    background-color: white;
    transition: width 0.3s ease;
}

/* レスポンシブプレビューモード */
.preview-panel.tablet .preview-wrapper {
    padding: 40px 20px;
}

.preview-panel.tablet #preview {
    width: 768px;
    max-width: 100%;
    height: calc(100% - 40px);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.preview-panel.mobile .preview-wrapper {
    padding: 40px 20px;
}

.preview-panel.mobile #preview {
    width: 375px;
    max-width: 100%;
    height: calc(100% - 40px);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.console {
    background-color: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
    height: 150px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    padding: 10px;
    display: none;
}

.console.show {
    display: block;
}

.console-entry {
    padding: 4px 8px;
    margin: 2px 0;
    border-left: 3px solid transparent;
}

.console-entry.log {
    border-left-color: var(--info-color);
}

.console-entry.error {
    border-left-color: var(--error-color);
    background-color: rgba(244, 67, 54, 0.1);
}

.console-entry.warn {
    border-left-color: var(--warning-color);
    background-color: rgba(255, 152, 0, 0.1);
}

.resizer {
    width: 5px;
    cursor: col-resize;
    background-color: var(--border-color);
    position: relative;
}

.resizer:hover {
    background-color: var(--accent-color);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10001; /* FABボタンより上に */
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: 8px;
    padding: 30px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-content h3 {
    margin-bottom: 20px;
}

.modal-close-btn {
    margin-top: 20px;
    width: 100%;
}

.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.template-card {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    cursor: pointer;
    transition: all 0.2s;
}

.template-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.template-card:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.template-card h4 {
    margin-bottom: 8px;
    color: var(--accent-color);
}

.template-card p {
    font-size: 12px;
    color: var(--text-secondary);
}

.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
    background-color: var(--accent-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.export-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

.export-btn {
    width: 100%;
    text-align: left;
}

/* SNS共有スタイル */
.share-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 14px;
}

.share-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 25px;
}

.share-btn {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
    font-weight: 600;
    transition: all 0.3s;
}

.share-btn svg {
    flex-shrink: 0;
}

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

.twitter-btn:hover {
    background-color: #333333;
}

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

.facebook-btn:hover {
    background-color: #0c5ec5;
}

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

.line-btn:hover {
    background-color: #009900;
}

.share-url-section {
    background-color: var(--bg-secondary);
    padding: 20px;
    border-radius: 6px;
    margin-bottom: 10px;
}

.share-url-section label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 14px;
}

.url-input-group {
    display: flex;
    gap: 10px;
}

.share-url-input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    font-family: monospace;
}

.share-url-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.share-note {
    margin-top: 10px;
    font-size: 12px;
    color: var(--text-secondary);
    font-style: italic;
}

/* 外部ライブラリ選択UI */
.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.library-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.library-item:hover {
    background-color: var(--bg-secondary);
    border-color: var(--accent-color);
}

.library-item input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
}

.library-item span {
    font-size: 13px;
    user-select: none;
}

.library-note {
    margin-top: 15px;
    padding: 10px;
    background-color: var(--bg-secondary);
    border-radius: 4px;
    border-left: 3px solid var(--info-color);
}

/* タブレット・スマホ対応 */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
        height: calc(100vh - 70px); /* ヘッダーが小さくなったので高さを増やす */
    }

    .preview-panel {
        border-left: none;
        border-top: 2px solid var(--border-color);
        min-height: 40vh;
    }
    
    .editor-panel {
        min-height: 30vh;
    }

    .resizer {
        display: none;
    }

    .header-controls {
        width: auto; /* 実行ボタンのみなのでautoに */
    }

    .btn {
        font-size: 13px;
        padding: 8px 16px;
        min-height: 36px;
    }
    
    .header h1 {
        font-size: 18px;
    }
    
    .footer {
        font-size: 10px;
        padding: 6px 10px;
    }
    
    /* プレビューヘッダーのモバイル対応 */
    .preview-header {
        padding: 8px 12px;
    }
    
    .preview-header h2 {
        font-size: 14px;
        flex: 1;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .preview-header .btn {
        font-size: 11px;
        padding: 6px 12px;
        min-width: auto;
        min-height: 30px;
        flex-shrink: 0;
    }
    
    .btn-viewport {
        padding: 4px 8px;
        font-size: 14px;
        min-width: 32px;
    }
    
    .status-indicator {
        width: 6px;
        height: 6px;
        margin-right: 6px;
    }
    
    /* タブのモバイル対応 */
    .tab {
        padding: 10px 16px;
        font-size: 13px;
    }
    
    /* SNS共有ボタンのモバイル対応 */
    .share-btn {
        font-size: 13px;
        padding: 10px 16px;
    }
    
    .url-input-group {
        flex-direction: column;
    }
    
    .share-url-input {
        font-size: 12px;
    }
    
    /* ライブラリグリッドのモバイル対応 */
    .library-grid {
        grid-template-columns: 1fr;
    }
}

/* より小さいスマホ画面用 */
@media (max-width: 480px) {
    .container {
        height: calc(100vh - 65px); /* さらに高さを増やす */
    }
    
    .header {
        padding: 10px 14px;
    }
    
    .header h1 {
        font-size: 16px;
    }
    
    .btn {
        font-size: 12px;
        padding: 7px 14px;
        min-height: 34px;
    }
    
    .preview-header {
        padding: 6px 10px;
        gap: 6px;
    }
    
    .preview-header h2 {
        font-size: 12px;
        flex: 1;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .preview-header .btn {
        font-size: 10px;
        padding: 4px 8px;
        flex-shrink: 0;
        min-height: 26px;
    }
    
    .btn-viewport {
        padding: 3px 6px;
        font-size: 12px;
        min-width: 28px;
    }
    
    .tab {
        padding: 8px 12px;
        font-size: 12px;
    }
    
    /* コンソールのモバイル対応 */
    .console {
        height: 120px;
        font-size: 11px;
        padding: 8px;
    }
    
    .console-entry {
        padding: 3px 6px;
        font-size: 10px;
    }
    
    .preview-panel {
        min-height: 35vh;
    }
    
    .editor-panel {
        min-height: 25vh;
    }
    
    /* SNS共有ボタンのスマホ対応 */
    .share-btn {
        font-size: 12px;
        padding: 9px 14px;
    }
    
    .share-btn svg {
        width: 16px;
        height: 16px;
    }
}

/* トースト通知 */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--accent-color);
    color: white;
    padding: 12px 24px;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 9999; /* FABボタンより下に */
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.error {
    background-color: var(--error-color);
}

.toast.success {
    background-color: var(--accent-color);
}

/* フッター */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 8px 20px;
    text-align: center;
    font-size: 12px;
    color: var(--text-secondary);
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1; /* FABボタンより下に */
}

.footer p {
    margin: 0;
}

.footer a {
    color: black;
}

.footer a:hover {
    color: darkgrey;
}

/* 設定モーダル */
.settings-section {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.settings-section:last-of-type {
    border-bottom: none;
}

.settings-section h4 {
    margin-bottom: 15px;
    color: var(--text-primary);
    font-size: 16px;
}

.setting-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.setting-label {
    font-size: 14px;
    color: var(--text-primary);
}

.setting-label a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s;
}

.setting-label a:hover {
    color: #45a049;
    text-decoration: underline;
}

.setting-description {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 10px;
    margin-bottom: 0;
}

/* トグルスイッチ */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-tertiary);
    transition: 0.3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* フォントサイズボタン */
.font-size-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-font-size {
    flex: 1;
    min-width: 60px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-font-size.active {
    background-color: var(--accent-color);
    color: white;
}

/* デスクトップ/モバイル表示切り替え */
.desktop-only {
    display: flex;
}

.mobile-only {
    display: none;
}

/* モバイル用フローティングアクションボタン (FAB) */
.fab-button {
    display: none;
    position: fixed;
    bottom: 50px; /* フッターの上に配置 */
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color) 0%, #45a049 100%);
    color: white;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    z-index: 10000; /* トーストやフッターより前面に表示 */
    transition: all 0.3s ease;
    animation: fabPulse 2s infinite;
}

@keyframes fabPulse {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
    50% {
        box-shadow: 0 4px 12px rgba(76, 175, 80, 0.6), 0 0 0 8px rgba(76, 175, 80, 0.1);
    }
}

.fab-button:active {
    transform: scale(0.95);
    animation: none;
}

.fab-icon {
    font-size: 24px;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* モバイルメニューオーバーレイ */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10001; /* FABボタンより上に */
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-menu-overlay.show {
    display: block;
    opacity: 1;
}

/* モバイルスライドアップメニュー */
.mobile-menu {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    max-height: 70vh;
    background-color: var(--bg-primary);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
    z-index: 10002; /* FABボタンより上に */
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.mobile-menu.show {
    display: block;
    transform: translateY(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.mobile-menu-close:hover {
    background-color: var(--bg-secondary);
}

.mobile-menu-content {
    padding: 10px;
    overflow-y: auto;
    max-height: calc(70vh - 80px);
}

.mobile-menu-item {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    padding: 16px 20px;
    background: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
    text-align: left;
    color: var(--text-primary);
}

.mobile-menu-item:hover {
    background-color: var(--bg-secondary);
}

.mobile-menu-item:active {
    background-color: var(--bg-tertiary);
}

.mobile-menu-icon {
    font-size: 24px;
    width: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu-text {
    font-size: 16px;
    font-weight: 500;
}

@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
    
    .mobile-only {
        display: flex;
    }
    
    .fab-button {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .header {
        padding: 12px 16px;
    }
    
    .header h1 {
        font-size: 18px;
    }
    
    .header-controls {
        gap: 8px;
    }
}

/* ========================================
   全画面モード
   ======================================== */

/* 全画面モード時のプレビューパネル */
.preview-panel.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 10003;
    background-color: var(--bg-primary);
    border: none;
}

/* 全画面モード時は他の要素を非表示 */
body.fullscreen-active .header,
body.fullscreen-active .editor-panel,
body.fullscreen-active .resizer,
body.fullscreen-active .footer,
body.fullscreen-active .fab-button {
    display: none !important;
}

body.fullscreen-active .container {
    height: 100vh;
    flex-direction: column;
}

.preview-panel.fullscreen .preview-wrapper {
    height: calc(100vh - 60px);
}

.preview-panel.fullscreen #preview {
    width: 100%;
    height: 100%;
}

/* 全画面終了ボタン */
.fullscreen-exit-btn {
    display: none;
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    font-size: 24px;
    cursor: pointer;
    z-index: 10004;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
    line-height: 1;
    padding: 0;
}

.fullscreen-exit-btn:hover {
    background-color: var(--error-color);
    border-color: white;
    transform: scale(1.1);
}

.fullscreen-exit-btn:active {
    transform: scale(0.95);
}

.preview-panel.fullscreen .fullscreen-exit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-panel.fullscreen .preview-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
}

/* 全画面モードのアニメーション */
.preview-panel.fullscreen {
    animation: fullscreenIn 0.3s ease;
}

@keyframes fullscreenIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* レスポンシブプレビューモードとの組み合わせ */
.preview-panel.fullscreen.tablet .preview-wrapper,
.preview-panel.fullscreen.mobile .preview-wrapper {
    background-color: var(--bg-tertiary);
    padding: 20px;
}

.preview-panel.fullscreen.tablet #preview {
    width: 768px;
    max-width: 100%;
    height: 100%;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.preview-panel.fullscreen.mobile #preview {
    width: 375px;
    max-width: 100%;
    height: 100%;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

/* モバイル対応 */
@media (max-width: 768px) {
    .fullscreen-exit-btn {
        width: 44px;
        height: 44px;
        font-size: 20px;
        top: 15px;
        right: 15px;
    }
    
    .preview-panel.fullscreen .preview-wrapper {
        height: calc(100vh - 50px);
    }
}

@media (max-width: 480px) {
    .fullscreen-exit-btn {
        width: 40px;
        height: 40px;
        font-size: 18px;
        top: 12px;
        right: 12px;
    }
    
    .preview-panel.fullscreen .preview-wrapper {
        height: calc(100vh - 45px);
    }
}