:root{--app-bg:#0f141b;--panel:#141b24;--panel-raised:#1b2430;--border:#26313f;--text:#dde5ef;--text-dim:#8a97a8;--accent:var(--brand-400);--accent-strong:var(--brand-500);--accent-soft:#349ef429;--error:#ff6b6b;--warning:#f5c04a;--editor-bg:#111821}.app,.auth,.present,.presenter{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:var(--text);font-size:14px;line-height:1.4}.app{grid-template-columns:var(--sidebar-width,280px) var(--editor-width,minmax(380px, 1fr)) minmax(420px, 1.15fr);background:var(--app-bg);height:100dvh;display:grid;overflow:hidden}.sidebar{background:var(--panel);border-right:1px solid var(--border);flex-direction:column;min-width:0;display:flex;position:relative}.brand{letter-spacing:.02em;color:var(--accent);padding:16px 18px;font-size:17px;font-weight:700}.sidebar-heading{color:var(--text-dim);text-transform:uppercase;letter-spacing:.08em;justify-content:space-between;align-items:center;padding:6px 10px 6px 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32px}.pane-header{flex-wrap:wrap;height:auto;min-height:48px;padding:8px 12px}.preview-actions{flex-wrap:wrap;justify-content:flex-end}.preview-stage{padding:12px}.thumbnail{flex-basis:112px}.toast{max-width:none;bottom:16px;left:16px;right:16px}.gallery-overlay{padding:12px}.gallery-dialog{max-height:calc(100dvh - 24px);padding:20px 16px}.present-notes{max-width:none;max-height:45%;bottom:64px;left:12px;right:12px}.present-hud{justify-content:space-between;left:12px;right:12px}}