/* ========== CSS 变量与暗色模式 ========== */
:root {
    --bg: #f0f2f5;
    --panel-bg: #ffffff;
    --panel-radius: 12px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --accent: #4f6ef7;
    --accent-light: #eef1ff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --toolbar-bg: #f8fafc;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --code-bg: #1e293b;
    --line-num-bg: #f8fafc;
    --line-num-color: #94a3b8;
    --preview-note-bg: #f8fafc;
}
[data-theme="dark"] {
    --bg: #0f172a;
    --panel-bg: #1e293b;
    --shadow: 0 2px 12px rgba(0,0,0,0.3);
    --accent: #60a5fa;
    --accent-light: rgba(96,165,250,0.15);
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #334155;
    --toolbar-bg: #0f172a;
    --code-bg: #020617;
    --line-num-bg: #0f172a;
    --line-num-color: #475569;
    --preview-note-bg: #0f172a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
    background: var(--bg);
    height: 100vh;
    overflow: hidden;
    color: var(--text);
}
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: #475569; }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: #64748b; }

/* ========== 布局 ========== */
.app { display: flex; flex-direction: column; height: 100vh; padding: 8px; gap: 8px; }
.header {
    background: var(--panel-bg);
    border-radius: var(--panel-radius);
    box-shadow: var(--shadow);
    padding: 12px 20px;
    flex-shrink: 0;
}
.header-top {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 10px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px;
}
.brand h1 { font-size: 18px; font-weight: 700; }
.brand .subtitle { font-size: 12px; color: var(--text-secondary); }
.header-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ========== 按钮 ========== */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 14px; border-radius: 8px; font-size: 13px;
    font-weight: 500; cursor: pointer; border: 1px solid var(--border);
    background: var(--panel-bg); color: var(--text); transition: all 0.15s;
    user-select: none; white-space: nowrap;
}
.btn:hover { background: var(--toolbar-bg); border-color: #cbd5e1; }
[data-theme="dark"] .btn:hover { background: #334155; border-color: #475569; }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.1); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-icon { padding: 6px 8px; font-size: 14px; border: none; background: transparent; border-radius: 6px; color: var(--text-secondary); }
.btn-icon:hover { background: var(--border); color: var(--text); }
.btn-icon.active { background: var(--accent); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: rgba(239,68,68,0.1); }

/* 工具栏 */
.toolbar {
    display: flex; flex-wrap: wrap; align-items: center; gap: 2px;
    padding-top: 8px; margin-top: 8px; border-top: 1px solid var(--border);
}
@media (max-width: 768px) {
    .toolbar { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; }
}
.toolbar-group {
    display: flex; align-items: center;
    background: var(--toolbar-bg); border-radius: 8px; padding: 2px;
    flex-shrink: 0;
}
.toolbar-divider { width: 1px; height: 24px; background: var(--border); margin: 0 6px; flex-shrink: 0; }
.toolbar .btn-icon { font-size: 13px; }

/* Butterfly 特色按钮 */
.btn-butterfly { font-size: 12px; padding: 5px 10px; border-radius: 6px; font-weight: 500; flex-shrink: 0; }
.btn-butterfly.note { color: #2563eb; background: #eff6ff; border: 1px solid #bfdbfe; }
.btn-butterfly.note:hover { background: #dbeafe; }
.btn-butterfly.tabs { color: #7c3aed; background: #f5f3ff; border: 1px solid #ddd6fe; }
.btn-butterfly.tabs:hover { background: #ede9fe; }
.btn-butterfly.timeline { color: #16a34a; background: #f0fdf4; border: 1px solid #bbf7d0; }
.btn-butterfly.timeline:hover { background: #dcfce7; }
.btn-butterfly.btn-el { color: #ea580c; background: #fff7ed; border: 1px solid #fed7aa; }
.btn-butterfly.btn-el:hover { background: #ffedd5; }
.btn-butterfly.label { color: #db2777; background: #fdf2f8; border: 1px solid #fbcfe8; }
.btn-butterfly.label:hover { background: #fce7f3; }
.btn-butterfly.gallery { color: #4f46e5; background: #eef2ff; border: 1px solid #c7d2fe; }
.btn-butterfly.gallery:hover { background: #e0e7ff; }
.btn-butterfly.hide { color: #475569; background: #f1f5f9; border: 1px solid #cbd5e1; }
.btn-butterfly.hide:hover { background: #e2e8f0; }
.btn-butterfly.video { color: #0891b2; background: #ecfeff; border: 1px solid #a5f3fc; }
.btn-butterfly.video:hover { background: #cffafe; }
[data-theme="dark"] .btn-butterfly.note { background: rgba(37,99,235,0.15); color: #60a5fa; border-color: rgba(37,99,235,0.3); }
[data-theme="dark"] .btn-butterfly.tabs { background: rgba(124,58,237,0.15); color: #a78bfa; border-color: rgba(124,58,237,0.3); }
[data-theme="dark"] .btn-butterfly.timeline { background: rgba(22,163,74,0.15); color: #4ade80; border-color: rgba(22,163,74,0.3); }
[data-theme="dark"] .btn-butterfly.btn-el { background: rgba(234,88,12,0.15); color: #fb923c; border-color: rgba(234,88,12,0.3); }
[data-theme="dark"] .btn-butterfly.label { background: rgba(219,39,119,0.15); color: #f472b6; border-color: rgba(219,39,119,0.3); }
[data-theme="dark"] .btn-butterfly.gallery { background: rgba(79,70,229,0.15); color: #818cf8; border-color: rgba(79,70,229,0.3); }
[data-theme="dark"] .btn-butterfly.hide { background: rgba(71,85,105,0.15); color: #94a3b8; border-color: rgba(71,85,105,0.3); }
[data-theme="dark"] .btn-butterfly.video { background: rgba(8,145,178,0.15); color: #22d3ee; border-color: rgba(8,145,178,0.3); }

/* ========== 主编辑区 ========== */
.main { flex: 1; display: flex; gap: 8px; overflow: hidden; }
.editor-panel, .preview-panel {
    background: var(--panel-bg);
    border-radius: var(--panel-radius);
    box-shadow: var(--shadow);
    display: flex; flex-direction: column; overflow: hidden;
}
.editor-panel { flex: 1; }
.preview-panel { width: 380px; flex-shrink: 0; }
@media (max-width: 768px) {
    .preview-panel { display: none; }
    .header-actions .btn span { display: none; }
    .brand .subtitle { display: none; }
}

.panel-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 16px; border-bottom: 1px solid var(--border);
    background: var(--toolbar-bg); flex-shrink: 0;
}
.panel-header .label {
    font-size: 13px; font-weight: 600; color: var(--text-secondary);
    display: flex; align-items: center; gap: 6px;
}

/* ========== 编辑器（带行号） ========== */
.editor-wrapper {
    flex: 1; display: flex; overflow: hidden; position: relative;
}
.line-numbers {
    width: 44px; background: var(--line-num-bg); border-right: 1px solid var(--border);
    font-family: 'JetBrains Mono', 'Fira Code', monospace; font-size: 14px; line-height: 1.8;
    padding: 20px 6px 20px 0; text-align: right; color: var(--line-num-color);
    overflow: hidden; user-select: none; flex-shrink: 0;
}
.line-numbers div { height: 25.2px; }
#markdown-source {
    flex: 1; width: 100%; padding: 20px;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 14px; line-height: 1.8;
    border: none; outline: none; resize: none;
    color: var(--text); background: transparent;
    tab-size: 4; spellcheck: false;
}
#markdown-source::placeholder { color: #94a3b8; }
[data-theme="dark"] #markdown-source::placeholder { color: #475569; }

/* ========== 预览区 ========== */
.preview-tabs { display: flex; gap: 4px; }
.preview-tab {
    padding: 4px 12px; border-radius: 6px; font-size: 12px; font-weight: 500;
    cursor: pointer; border: none; background: transparent; color: var(--text-secondary);
}
.preview-tab.active {
    background: var(--panel-bg); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.preview-body { flex: 1; overflow-y: auto; position: relative; }
#preview-render { padding: 20px; height: 100%; }
#preview-source {
    padding: 16px 20px; height: 100%; margin: 0;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 13px; line-height: 1.6;
    white-space: pre-wrap; word-break: break-all;
    background: var(--toolbar-bg); overflow: auto; color: var(--text);
    border: none; outline: none;
}
.preview-body .empty-state {
    display: flex; align-items: center; justify-content: center;
    height: 100%; color: #94a3b8; font-size: 14px;
}

/* ========== 预览渲染样式 ========== */
#preview-render h1 { font-size: 1.8em; font-weight: 700; margin: 0.6em 0 0.4em; border-bottom: 2px solid var(--border); padding-bottom: 0.3em; }
#preview-render h2 { font-size: 1.5em; font-weight: 700; margin: 0.6em 0 0.3em; border-bottom: 1px solid var(--border); padding-bottom: 0.2em; }
#preview-render h3 { font-size: 1.25em; font-weight: 600; margin: 0.5em 0 0.3em; }
#preview-render h4 { font-size: 1.1em; font-weight: 600; margin: 0.4em 0 0.2em; }
#preview-render h5, #preview-render h6 { font-size: 1em; font-weight: 600; margin: 0.3em 0 0.2em; }
#preview-render p { margin: 0.6em 0; line-height: 1.8; }
#preview-render a { color: var(--accent); text-decoration: none; }
#preview-render a:hover { text-decoration: underline; }
#preview-render strong { font-weight: 700; }
#preview-render em { font-style: italic; }
#preview-render blockquote {
    border-left: 4px solid var(--accent); padding: 12px 16px;
    margin: 12px 0; background: var(--toolbar-bg); border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
}
#preview-render blockquote p { margin: 0.3em 0; }
#preview-render ul, #preview-render ol { padding-left: 1.8em; margin: 0.6em 0; }
#preview-render li { margin: 0.3em 0; }
#preview-render pre {
    background: var(--code-bg); color: #e2e8f0; padding: 16px;
    border-radius: 8px; overflow-x: auto; margin: 12px 0;
    font-family: 'JetBrains Mono', 'Consolas', monospace; font-size: 13px;
}
#preview-render code {
    background: var(--toolbar-bg); padding: 2px 6px; border-radius: 4px;
    font-family: 'JetBrains Mono', 'Consolas', monospace; font-size: 0.9em;
    color: #e11d48;
}
[data-theme="dark"] #preview-render code { background: #0f172a; }
#preview-render pre code { background: transparent; color: inherit; padding: 0; }
#preview-render img { max-width: 100%; border-radius: 8px; margin: 8px 0; }
#preview-render table { width: 100%; border-collapse: collapse; margin: 12px 0; border-radius: 8px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
#preview-render th, #preview-render td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
#preview-render th { background: var(--toolbar-bg); font-weight: 600; }
#preview-render hr { border: none; border-top: 2px solid var(--border); margin: 20px 0; }
#preview-render input[type="checkbox"] { margin-right: 6px; }
.hexo-preview-hide-inline {
    cursor: pointer;
    color: var(--accent);
    text-decoration: underline;
}
.hexo-preview-hide-inline-content { display: none; }
#preview-render video { max-width: 100%; border-radius: 8px; margin: 8px 0; }

/* ========== Hexo 标签预览样式 ========== */
.hexo-block {
    margin: 12px 0; border-radius: 8px; overflow: hidden;
    border: 1px solid var(--border);
}
.hexo-block-header {
    display: flex; align-items: center; gap: 6px;
    padding: 6px 12px; font-size: 12px; font-weight: 600;
    background: var(--toolbar-bg); border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}
.hexo-block-body {
    padding: 12px 16px; font-size: 13px; color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    white-space: pre-wrap; word-break: break-all;
    background: var(--toolbar-bg);
}
.hexo-inline {
    display: inline-block; padding: 1px 8px; border-radius: 4px;
    background: var(--accent-light); color: var(--accent);
    font-size: 12px; font-family: 'JetBrains Mono', monospace;
    border: 1px solid #c7d2fe;
}

/* Note 预览 */
.hexo-preview-note {
    border-radius: 8px; padding: 12px 16px; margin: 12px 0;
    border-left: 4px solid; background: var(--preview-note-bg);
    font-size: 14px; line-height: 1.6;
}
.hexo-preview-note.info { border-color: #3b82f6; color: #1e40af; background: #eff6ff; }
.hexo-preview-note.success { border-color: #22c55e; color: #166534; background: #f0fdf4; }
.hexo-preview-note.warning { border-color: #f59e0b; color: #92400e; background: #fffbeb; }
.hexo-preview-note.danger { border-color: #ef4444; color: #991b1b; background: #fef2f2; }
.hexo-preview-note.primary { border-color: #a855f7; color: #6b21a8; background: #faf5ff; }
.hexo-preview-note.default { border-color: #6b7280; color: #374151; background: #f9fafb; }
[data-theme="dark"] .hexo-preview-note.info { background: rgba(59,130,246,0.1); color: #93c5fd; }
[data-theme="dark"] .hexo-preview-note.success { background: rgba(34,197,94,0.1); color: #86efac; }
[data-theme="dark"] .hexo-preview-note.warning { background: rgba(245,158,11,0.1); color: #fcd34d; }
[data-theme="dark"] .hexo-preview-note.danger { background: rgba(239,68,68,0.1); color: #fca5a5; }
[data-theme="dark"] .hexo-preview-note.primary { background: rgba(168,85,247,0.1); color: #d8b4fe; }
[data-theme="dark"] .hexo-preview-note.default { background: rgba(107,114,128,0.1); color: #d1d5db; }

/* Tabs 预览 */
.hexo-preview-tabs { margin: 12px 0; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.hexo-preview-tab-nav { display: flex; background: var(--toolbar-bg); border-bottom: 1px solid var(--border); }
.hexo-preview-tab-btn { padding: 8px 16px; font-size: 13px; border: none; background: transparent; cursor: pointer; color: var(--text-secondary); border-bottom: 2px solid transparent; }
.hexo-preview-tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.hexo-preview-tab-content { padding: 12px 16px; display: none; font-size: 14px; }
.hexo-preview-tab-content.active { display: block; }

/* Timeline 预览 */
.hexo-preview-timeline { margin: 12px 0; position: relative; padding-left: 20px; }
.hexo-preview-timeline::before { content: ''; position: absolute; left: 5px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.hexo-preview-timeline-item { position: relative; margin-bottom: 16px; }
.hexo-preview-timeline-dot { position: absolute; left: -20px; top: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); border: 2px solid var(--panel-bg); }
.hexo-preview-timeline-time { font-size: 12px; font-weight: 600; color: var(--accent); margin-bottom: 4px; }
.hexo-preview-timeline-content { font-size: 14px; color: var(--text); }

/* Button 预览 */
.hexo-preview-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 16px; border-radius: 6px; font-size: 14px;
    text-decoration: none; margin: 4px; font-weight: 500;
}
.hexo-preview-btn.blue { background: #3b82f6; color: #fff; }
.hexo-preview-btn.red { background: #ef4444; color: #fff; }
.hexo-preview-btn.green { background: #22c55e; color: #fff; }
.hexo-preview-btn.orange { background: #f97316; color: #fff; }
.hexo-preview-btn.purple { background: #a855f7; color: #fff; }
.hexo-preview-btn.pink { background: #ec4899; color: #fff; }
.hexo-preview-btn.default { background: #6b7280; color: #fff; }
.hexo-preview-btn.outline { background: transparent; border: 1px solid currentColor; }

/* Label 预览 */
.hexo-preview-label {
    display: inline-block; padding: 1px 8px; border-radius: 4px;
    font-size: 12px; font-weight: 500; margin: 0 2px;
}
.hexo-preview-label.blue { background: #3b82f6; color: #fff; }
.hexo-preview-label.red { background: #ef4444; color: #fff; }
.hexo-preview-label.green { background: #22c55e; color: #fff; }
.hexo-preview-label.orange { background: #f97316; color: #fff; }
.hexo-preview-label.purple { background: #a855f7; color: #fff; }
.hexo-preview-label.pink { background: #ec4899; color: #fff; }
.hexo-preview-label.default { background: #6b7280; color: #fff; }

/* Gallery 预览 */
.hexo-preview-gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; margin: 12px 0; }
.hexo-preview-gallery img { width: 100%; height: 100px; object-fit: cover; border-radius: 6px; }

/* Hide 预览 */
.hexo-preview-hide { margin: 12px 0; }
.hexo-preview-hide summary { cursor: pointer; padding: 8px 12px; background: var(--toolbar-bg); border-radius: 6px; font-size: 13px; font-weight: 500; }
.hexo-preview-hide-content { padding: 12px; border: 1px solid var(--border); border-top: none; border-radius: 0 0 6px 6px; }

/* Front-matter 预览 */
.front-matter-preview {
    background: var(--accent-light); border: 1px solid #c7d2fe;
    border-radius: 8px; padding: 12px 16px; margin-bottom: 16px;
    font-size: 12px; font-family: 'JetBrains Mono', monospace; white-space: pre-wrap;
}
.front-matter-preview .fm-title { color: var(--accent); font-weight: 600; margin-bottom: 6px; }
[data-theme="dark"] .front-matter-preview { background: rgba(96,165,250,0.1); border-color: rgba(96,165,250,0.3); }

/* ========== 模态框 ========== */
.modal-overlay {
    display: flex; position: fixed; inset: 0;
    background: rgba(0,0,0,0.4); backdrop-filter: blur(4px);
    z-index: 1000; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none; transition: opacity 0.2s ease;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
    background: var(--panel-bg); border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    width: 520px; max-width: 92vw; max-height: 85vh;
    display: flex; flex-direction: column;
    transform: scale(0.95) translateY(10px);
    transition: transform 0.2s ease;
    color: var(--text);
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 700; }
.modal-close {
    width: 32px; height: 32px; border-radius: 8px;
    border: none; background: transparent; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; color: var(--text-secondary);
}
.modal-close:hover { background: var(--toolbar-bg); }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }
.modal-footer {
    display: flex; align-items: center; justify-content: flex-end; gap: 8px;
    padding: 14px 20px; border-top: 1px solid var(--border);
}

.form-group { margin-bottom: 14px; }
.form-group:last-child { margin-bottom: 0; }
.form-label {
    display: block; font-size: 13px; font-weight: 600;
    color: var(--text); margin-bottom: 5px;
}
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 8px 12px; border: 1px solid var(--border);
    border-radius: 8px; font-size: 13px; outline: none;
    transition: border-color 0.15s; font-family: inherit;
    background: var(--panel-bg); color: var(--text);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79,110,247,0.1);
}
.form-textarea { resize: vertical; min-height: 70px; font-family: 'JetBrains Mono', monospace; }

.color-grid { display: flex; gap: 6px; flex-wrap: wrap; }
.color-chip {
    width: 36px; height: 36px; border-radius: 8px; border: 2px solid transparent;
    cursor: pointer; transition: all 0.15s; font-size: 0;
}
.color-chip:hover { transform: scale(1.1); }
.color-chip.active { border-color: var(--text); box-shadow: 0 0 0 2px var(--panel-bg), 0 0 0 4px var(--accent); }
.color-chip[data-color="#ffffff"] { border: 2px solid #d1d5db; }
.color-chip[data-color="#ffffff"].active { border-color: var(--text); }

.dynamic-items { display: flex; flex-direction: column; gap: 8px; }
.dynamic-item {
    display: flex; gap: 8px; align-items: flex-start;
    padding: 10px; background: var(--toolbar-bg); border-radius: 8px;
    border: 1px solid var(--border);
}
.dynamic-item .fields { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.dynamic-item .fields-row { display: flex; gap: 6px; }
.dynamic-item .fields-row .form-input { flex: 1; }
.dynamic-item .btn-del {
    padding: 6px; border: none; background: transparent;
    color: var(--danger); cursor: pointer; border-radius: 4px;
    font-size: 14px; flex-shrink: 0;
}
.dynamic-item .btn-del:hover { background: #fef2f2; }
.btn-add-item {
    width: 100%; padding: 8px; border: 2px dashed var(--border);
    border-radius: 8px; background: transparent; cursor: pointer;
    color: var(--text-secondary); font-size: 13px; font-weight: 500;
}
.btn-add-item:hover { border-color: var(--accent); color: var(--accent); }

/* ========== Toast 消息 ========== */
.toast-container {
    position: fixed; bottom: 20px; right: 20px; z-index: 2000;
    display: flex; flex-direction: column; gap: 8px;
}
.toast {
    padding: 10px 18px; border-radius: 10px; font-size: 13px; font-weight: 500;
    color: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    animation: toastIn 0.3s ease-out;
    display: flex; align-items: center; gap: 8px;
}
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--info); }
.toast-warning { background: var(--warning); color: #000; }
@keyframes toastIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ========== 状态栏 ========== */
.statusbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 4px 16px; font-size: 11px; color: var(--text-secondary);
    background: var(--toolbar-bg); border-top: 1px solid var(--border);
    flex-shrink: 0;
}
.statusbar span { display: flex; align-items: center; gap: 4px; }
.statusbar .save-status { font-weight: 600; }
.statusbar .save-status.saved { color: var(--success); }
.statusbar .save-status.unsaved { color: var(--warning); }

/* ========== 恢复提示条 ========== */
.restore-bar {
    display: none; align-items: center; justify-content: space-between;
    padding: 8px 16px; background: var(--accent-light); border-bottom: 1px solid var(--border);
    font-size: 13px; color: var(--accent);
}
.restore-bar.show { display: flex; }
.restore-bar button { margin-left: 8px; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .preview-panel { display: none; }
    .header-actions .btn span { display: none; }
    .brand .subtitle { display: none; }
    .line-numbers { width: 32px; font-size: 12px; padding: 20px 2px 20px 0; }
}