:root {
    --bg: #0f172a;
    --panel: #111827;
    --panel-soft: #162033;
    --line: #233248;
    --text: #e5edf7;
    --muted: #96a5bb;
    --primary: #2563eb;
    --danger: #dc2626;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    background: linear-gradient(180deg, #0b1220 0%, var(--bg) 100%);
    color: var(--text);
}
a { color: #93c5fd; text-decoration: none; }
.layout { display: grid; grid-template-columns: 340px 1fr; min-height: 100vh; }
.sidebar { padding: 18px; border-right: 1px solid var(--line); display: flex; flex-direction: column; gap: 16px; }
.main { padding: 18px; display: flex; flex-direction: column; gap: 16px; }
.panel {
    background: rgba(17, 24, 39, 0.94);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,.18);
}
.brand { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.brand h1 { margin: 0; font-size: 24px; }
.brand p, .muted { color: var(--muted); }
.btn {
    background: var(--primary);
    color: #fff;
    border: 0;
    padding: 11px 14px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 700;
}
.btn.secondary { background: #334155; }
.btn.danger { background: var(--danger); }
.btn.full { width: 100%; }
.input {
    background: #0b1220;
    color: var(--text);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 11px 12px;
}
.select { min-width: 130px; }
.row { display: flex; align-items: center; }
.gap { gap: 10px; }
.flex-1 { flex: 1; }
.status-row { margin-top: 10px; justify-content: space-between; color: var(--muted); font-size: 14px; }
.note-list { display: flex; flex-direction: column; gap: 10px; max-height: 300px; overflow: auto; }
.note-item {
    background: var(--panel-soft);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px;
    cursor: pointer;
}
.note-item.active { outline: 2px solid #60a5fa; }
.note-item strong { display: block; margin-bottom: 5px; }
.toolbar-block { display: flex; flex-direction: column; gap: 10px; }
.tool-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tool-btn {
    border: 1px solid var(--line);
    background: #0b1220;
    color: var(--text);
    border-radius: 10px;
    padding: 10px;
    cursor: pointer;
}
.workspace { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.tab {
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: #0b1220;
    color: var(--text);
    cursor: pointer;
}
.tab.active { background: var(--primary); border-color: var(--primary); }
.view { display: none; flex: 1; min-height: 0; }
.view.active { display: flex; flex-direction: column; }
.plain-editor,
.compare-textarea,
.preview-pane,
.editor-surface,
.tox-tinymce { width: 100%; min-height: 520px; border-radius: 14px; }
.plain-editor,
.compare-textarea {
    background: #06101d;
    color: var(--text);
    border: 1px solid var(--line);
    padding: 14px;
    resize: vertical;
    font-family: Consolas, monospace;
    font-size: 14px;
}
.editor-surface { border: 1px solid var(--line); overflow: hidden; }
.hidden { display: none !important; }
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.preview-pane { background: #fff; color: #111827; padding: 20px; overflow: auto; }
.inline-check { display: inline-flex; align-items: center; gap: 8px; }
.auth-page { display: flex; align-items: center; justify-content: center; padding: 24px; }
.auth-card { width: min(460px, 100%); }
.stack-form { display: flex; flex-direction: column; gap: 12px; margin: 16px 0; }
@media (max-width: 1100px) {
    .layout { grid-template-columns: 1fr; }
    .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
}