:root{--bg: #f7f7f8;--panel: #ffffff;--ink: #16181d;--muted: #5c6270;--line: #d9dce3;--accent: #2f63e0;--warn: #a8541c;--field: #ffffff;--row-hover: #f2f5fd;--row-selected: #e6edfc;--danger: #b3261e;--logo-plaque: transparent;--logo-plaque-pad: 0px;--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #14161a;--panel: #1c1f25;--ink: #e8eaee;--muted: #9aa2b1;--line: #2c313a;--accent: #7ea2f5;--warn: #e0a35f;--field: #0f1114;--row-hover: #232833;--row-selected: #2b3446;--danger: #f2857c;--logo-plaque: #f4f4f5;--logo-plaque-pad: 8px;color-scheme:dark}}:root[data-theme=dark]{--bg: #14161a;--panel: #1c1f25;--ink: #e8eaee;--muted: #9aa2b1;--line: #2c313a;--accent: #7ea2f5;--warn: #e0a35f;--field: #0f1114;--row-hover: #232833;--row-selected: #2b3446;--danger: #f2857c;--logo-plaque: #f4f4f5;--logo-plaque-pad: 8px;color-scheme:dark}*{box-sizing:border-box}body{margin:0;font-family:var(--font);font-size:14px;color:var(--ink);background:var(--bg);line-height:1.45}.app-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 20px 10px;border-bottom:1px solid var(--line);background:var(--panel)}.app-header-text{flex:1;min-width:0}.theme-toggle{flex:none;display:flex;gap:0}.theme-toggle button{border-radius:0;padding:4px 9px;line-height:1.2;color:var(--muted)}.theme-toggle button:first-child{border-radius:5px 0 0 5px}.theme-toggle button:last-child{border-radius:0 5px 5px 0}.theme-toggle button+button{border-left:none}.theme-toggle button.selected{border-color:var(--accent);color:var(--accent);background:var(--row-selected)}.theme-toggle button.selected+button{border-left:none}.app-logo-link{flex:none;display:inline-flex;border-radius:4px}.app-logo{height:44px;width:auto;display:block;background:var(--logo-plaque);padding:var(--logo-plaque-pad);border-radius:6px;box-sizing:content-box}@media (max-width: 620px){.app-logo-link{display:none}}.app-header h1{margin:0;font-size:19px}.app-header h1 .tagline{font-weight:400;font-size:15px;color:var(--muted);margin-left:6px}.privacy{margin:4px 0 0;color:var(--muted);font-size:13px}.project-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:14px 14px 0;padding:9px 12px;background:var(--panel);border:1px solid var(--line);border-radius:8px}.project-bar h2{margin:0;font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.project-actions{display:flex;gap:7px;flex-wrap:wrap}.project-autosave{display:flex;align-items:center;gap:10px;margin-left:auto;flex-wrap:wrap}.autosave-note{font-size:12px;color:var(--muted)}.checkbox{display:inline-flex;align-items:center;gap:6px;font-size:13px;white-space:nowrap}.checkbox input{flex:none}.file-button{display:inline-flex;align-items:center;font:inherit;padding:5px 11px;border:1px solid var(--line);border-radius:5px;background:var(--field);cursor:pointer}.file-button:hover{border-color:var(--accent);color:var(--accent)}.file-button:focus-within{outline:2px solid var(--accent);outline-offset:1px}.file-button input[type=file]{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}button.danger:hover:not(:disabled){border-color:var(--danger);color:var(--danger)}.layout{display:grid;grid-template-columns:minmax(280px,1fr) minmax(420px,1.7fr) minmax(280px,1fr);gap:14px;padding:14px;align-items:start}@media (max-width: 1100px){.layout{grid-template-columns:1fr}}.column{display:flex;flex-direction:column;gap:14px;min-width:0}.panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:12px 14px 14px;min-width:0}.panel h2{margin:0 0 10px;font-size:15px}.panel h3{margin:16px 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.field{margin-bottom:10px}.field>label,legend{display:block;font-weight:600;margin-bottom:3px;font-size:13px}fieldset.field{border:1px solid var(--line);border-radius:6px;padding:8px 10px 10px;margin:0 0 12px}input[type=text],input[type=file],select,textarea{width:100%;font:inherit;padding:5px 7px;border:1px solid var(--line);border-radius:5px;background:var(--field);color:inherit}textarea{font-family:var(--mono);font-size:12px;resize:vertical}input[type=range]{width:100%}input[type=color]{width:42px;height:26px;padding:1px;border:1px solid var(--line);border-radius:4px;background:var(--field)}button{font:inherit;padding:5px 11px;border:1px solid var(--line);border-radius:5px;background:var(--field);color:inherit;cursor:pointer}button:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}button:disabled{opacity:.55;cursor:default}button.small{padding:2px 7px;font-size:12px}:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.row{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:8px}.check{display:flex;align-items:baseline;gap:6px;margin:3px 0}.check input{flex:none}.check label{font-weight:400;font-size:13px}.hint,.note{color:var(--muted);font-size:12px}.note{margin:6px 0}.warn,.warn-note{color:var(--warn)}.warn-note{border-left:3px solid var(--warn);padding-left:8px}.set-input{border-top:1px solid var(--line);padding-top:10px;margin-top:10px}.stats{margin:5px 0 0;font-size:12px;color:var(--muted)}.diagram-host{width:100%;border:1px solid var(--line);border-radius:6px;background-color:#fff;background-image:linear-gradient(45deg,#f0f0f2 25%,transparent 25%),linear-gradient(-45deg,#f0f0f2 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#f0f0f2 75%),linear-gradient(-45deg,transparent 75%,#f0f0f2 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0;touch-action:none}.diagram-host svg{display:block;width:100%;height:auto}.diagram-host [data-mask],.diagram-host [data-set]{cursor:grab}.diagram-host #region-fills [data-mask]{cursor:default}.tabs{display:flex;gap:4px;margin-bottom:8px}.tabs button.active{border-color:var(--accent);color:var(--accent);font-weight:600}.colours{width:100%;border-collapse:collapse;margin-bottom:12px}.colours th,.colours td{text-align:left;padding:3px 5px;font-size:12px}.colours thead th{color:var(--muted);font-weight:600;border-bottom:1px solid var(--line)}.table-scroll{max-height:420px;overflow:auto;border:1px solid var(--line);border-radius:6px}table.regions{width:100%;border-collapse:collapse;font-size:12px}table.regions th,table.regions td{padding:4px 7px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}table.regions thead th{position:sticky;top:0;background:var(--panel);color:var(--muted);z-index:1}table.regions tbody tr:hover{background:var(--row-hover)}table.regions tr.selected{background:var(--row-selected)}.mono{font-family:var(--mono)}.num{text-align:right;font-variant-numeric:tabular-nums}.elements{max-width:380px;word-break:break-word;color:var(--muted)}.status-bar{position:sticky;bottom:0;padding:6px 20px;min-height:28px;border-top:1px solid var(--line);background:var(--panel);color:var(--muted);font-size:13px}.app-footer{padding:10px 20px 16px;color:var(--muted);font-size:12px;text-align:center}.app-footer a{color:inherit}.app-footer a:hover{color:var(--accent)}.footer-sep{opacity:.6}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}