:root{color-scheme:dark;--bg: #0a0a0b;--panel-bg: #16171a;--panel-border: #2a2b2f;--text: #f2f2f2;--text-muted: #9a9aa0;--text-secondary: #cfcfcf;--accent: #d81e2c;--accent-hover: #ef2b3a;--accent-text: #ffffff;--error: #ff6b6b;--input-bg: #0f0f11;--button-bg: #232326;--button-hover-bg: #2c2c30;--hover-bg: #1f1f21;--overlay-bg: #0a0a0b}:root[data-theme=light]{color-scheme:light;--bg: #f6f5f3;--panel-bg: #ffffff;--panel-border: #ddd9d3;--text: #1a1a1a;--text-muted: #6b6a68;--text-secondary: #333333;--accent: #d81e2c;--accent-hover: #b8121f;--accent-text: #ffffff;--error: #c2273a;--input-bg: #ffffff;--button-bg: #eeece8;--button-hover-bg: #e2ded7;--hover-bg: #efece7;--overlay-bg: #f6f5f3}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}#app{max-width:1400px;margin:0 auto;padding:1.5rem 1.5rem 4rem;display:flex;flex-direction:column;gap:1.25rem}.app-header{display:flex;align-items:center;justify-content:space-between}.app-header .logo{height:56px;width:auto;border-radius:6px}.nav-toggle{font-size:1.1rem;padding:.4rem .7rem}.nav-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;z-index:999;display:none}.nav-backdrop.open{display:block}.side-nav{position:fixed;top:0;bottom:0;left:0;width:min(380px,88vw);background:var(--bg);border-right:1px solid var(--panel-border);padding:1rem;overflow-y:auto;transform:translate(-100%);transition:transform .2s ease;z-index:1000;display:flex;flex-direction:column;gap:1rem}.side-nav.open{transform:translate(0)}.side-nav-header{display:flex;align-items:center;justify-content:space-between}.nav-close{font-size:1.1rem;line-height:1;padding:.2rem .6rem}.theme-toggle{border-radius:999px;font-size:.8rem;padding:.4rem .9rem}.panel{border:1px solid var(--panel-border);border-radius:8px;padding:1rem;background:var(--panel-bg)}.hint{color:var(--text-muted);font-size:.85rem;margin:0 0 .75rem}.doc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.25rem;max-height:260px;overflow-y:auto}.doc-list li button{width:100%;text-align:left;background:transparent;border:none;color:var(--text-secondary);padding:.4rem .5rem;border-radius:4px;cursor:pointer;font-size:.9rem}.doc-list li button:hover{background:var(--hover-bg)}.doc-list li button.active{background:var(--accent);color:var(--accent-text)}.status{color:var(--text-muted);font-size:.85rem}.status.error{color:var(--error)}input[type=text],input[type=number],select{background:var(--input-bg);border:1px solid var(--panel-border);color:var(--text);border-radius:6px;padding:.4rem .6rem;font-size:.9rem}input[type=file]{color:var(--text-secondary)}button{background:var(--button-bg);border:1px solid var(--panel-border);color:var(--text);border-radius:6px;padding:.45rem .8rem;font-size:.9rem;cursor:pointer}button:hover{background:var(--button-hover-bg)}button:disabled{opacity:.5;cursor:default}.history-panel{margin-top:.75rem;border-top:1px solid var(--panel-border);padding-top:.75rem}.history-list{list-style:none;margin:.5rem 0 0;padding:0;display:flex;flex-direction:column;gap:.3rem}.history-list li{display:flex;align-items:baseline;gap:.5rem;font-size:.85rem}.history-list li button{background:none;border:none;color:var(--text-muted);padding:0;font-size:.8rem;text-decoration:underline;cursor:pointer}.history-list li.current button{color:var(--accent);font-weight:600;text-decoration:none}.history-rationale{color:var(--text-muted)}.toolbar-sticky{position:sticky;top:0;z-index:10;background:var(--bg);padding-top:.5rem;padding-bottom:.25rem}.toolbar{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:.75rem}.tool-btn{background:var(--panel-bg);border:1px solid var(--panel-border);color:var(--text-muted);border-radius:999px;padding:.4rem .9rem;font-size:.85rem;font-weight:600}.tool-btn:hover{color:var(--text)}.tool-btn.active{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.inspector{border:1px solid var(--panel-border);border-radius:8px;padding:1rem;background:var(--panel-bg)}.inspector .btn-primary,.inspector button#propose-btn,.inspector button#approve-btn{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.inspector .btn-primary:hover,.inspector button#propose-btn:hover,.inspector button#approve-btn:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.viewer{display:flex;flex-direction:column;gap:1.5rem}.page-wrapper{position:relative;text-align:center}.page-label{color:var(--text-muted);font-size:.8rem;margin-bottom:.35rem}.page-canvas-container{position:relative;display:inline-block;max-width:100%}.page-canvas{display:block;max-width:100%;border:1px solid var(--panel-border)}.field-overlay{position:absolute;box-sizing:border-box;margin:0;padding:0}.field-overlay-text{background:#ffff1e40;border:1px solid var(--accent);font-size:.8rem;padding:0 2px;color:#1a1a1a}.field-overlay-text:focus{background:#fffffff2;outline:none}.field-overlay-checkbox{cursor:pointer;accent-color:var(--accent);outline:2px solid rgba(216,30,44,.5);outline-offset:1px}.workspace-layout{display:flex;flex-direction:column;gap:1.25rem}.main-column{min-width:0}.chat-toggle-btn{position:fixed;right:1.5rem;bottom:1.5rem;z-index:1003;width:56px;height:56px;border-radius:50%;background:var(--accent);color:var(--accent-text);border:none;font-size:1.5rem;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 16px #00000059}.chat-toggle-btn:hover{background:var(--accent-hover)}.chat-toggle-btn.open{transform:scale(.9)}.chat-panel{position:fixed;right:1.5rem;bottom:5.5rem;z-index:1002;width:min(360px,calc(100vw - 3rem));height:min(500px,calc(100vh - 8rem));display:flex;flex-direction:column;border:1px solid var(--panel-border);border-radius:12px;background:var(--panel-bg);box-shadow:0 10px 40px #0000004d;transform:translateY(12px) scale(.97);opacity:0;pointer-events:none;visibility:hidden;transition:transform .15s ease,opacity .15s ease}.chat-panel.open{transform:translateY(0) scale(1);opacity:1;pointer-events:auto;visibility:visible}.chat-header{padding:.75rem 1rem;border-bottom:1px solid var(--panel-border);font-weight:600;display:flex;align-items:center;justify-content:space-between}.chat-collapse-btn{background:none;border:none;color:var(--text-muted);font-size:1.1rem;line-height:1;padding:0 .25rem;cursor:pointer}.chat-messages{flex:1;overflow-y:auto;padding:.75rem;display:flex;flex-direction:column;gap:.5rem}.chat-message{padding:.5rem .7rem;border-radius:10px;font-size:.85rem;max-width:90%;white-space:pre-wrap}.chat-message.user{align-self:flex-end;background:var(--accent);color:var(--accent-text)}.chat-message.assistant{align-self:flex-start;background:var(--button-bg);color:var(--text)}.chat-message.thinking{color:var(--text-muted)}.chat-plan-preview{align-self:flex-start;max-width:90%;padding:.6rem .7rem;border:1px solid var(--panel-border);border-radius:8px;background:var(--bg);font-size:.8rem}.chat-plan-preview ul{margin:.3rem 0;padding-left:1.1rem}.chat-plan-preview button{margin-right:.4rem;font-size:.8rem;padding:.3rem .6rem}.chat-plan-preview .chat-approve-btn{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.chat-input-row{display:flex;gap:.4rem;padding:.6rem;border-top:1px solid var(--panel-border)}.chat-input-row input{flex:1}.chat-region-btn{flex:0 0 auto;padding:.45rem .6rem}.chat-region-btn.active{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.chat-region-indicator{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.4rem .75rem;font-size:.8rem;color:var(--text-secondary);border-top:1px solid var(--panel-border);background:var(--bg)}.chat-region-indicator button{background:none;border:none;color:var(--text-muted);font-size:1rem;line-height:1;padding:0 .25rem;cursor:pointer}.chat-region-highlight{position:absolute;box-sizing:border-box;border:2px dashed #2b7fff;background:#2b7fff26;pointer-events:none}.proposal-highlight{position:absolute;box-sizing:border-box;border:2px dashed var(--accent);background:#d81e2c1f;pointer-events:none}