:root{color-scheme:light;--page: #f6f7f4;--panel: #ffffff;--panel-alt: #eef5f1;--ink: #1f2a25;--muted: #66716c;--line: #d8dfda;--accent: #0f8f72;--accent-strong: #096b58;--warning: #b8402a}*{box-sizing:border-box}body{margin:0;min-width:320px;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--ink);background:var(--page)}button,select,input,textarea{font:inherit}button,input,select{min-height:40px}button{border:1px solid var(--accent-strong);border-radius:8px;padding:9px 13px;color:#fff;background:var(--accent-strong);cursor:pointer}button.secondary{color:var(--accent-strong);background:#fff}button:disabled,select:disabled,textarea:disabled{cursor:default;opacity:.55}select,input,textarea{width:100%;border:1px solid var(--line);border-radius:8px;color:var(--ink);background:#fff}input,select{padding:9px 10px}textarea{min-height:54px;max-height:140px;resize:vertical;padding:12px;line-height:1.45}.saddle-shell{display:grid;grid-template-columns:var(--sidebar-width, 340px) 8px minmax(0,1fr);width:100vw;height:100vh;overflow:hidden}.saddle-sidebar{display:flex;flex-direction:column;gap:14px;min-width:0;border-right:1px solid var(--line);background:var(--panel);padding:18px;overflow:auto}.sidebar-resize-handle{position:relative;cursor:col-resize;background:#eef2ef;border-right:1px solid var(--line);touch-action:none}.sidebar-resize-handle:after{content:"";position:absolute;top:50%;left:50%;width:2px;height:52px;border-radius:8px;background:#aab6b0;transform:translate(-50%,-50%)}.sidebar-resize-handle:hover,.sidebar-resize-handle:focus-visible{background:#dfe8e3}.brand-block{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line)}.brand-block div{display:grid;gap:3px}.brand-block strong{font-size:1.5rem}.brand-block span,.field-label,.project-facts span,.deliverable-row span,.chat-header span,.message-body time,.composer-note,.empty-text{color:var(--muted)}.login-shell{display:grid;place-items:center;min-height:100vh;padding:24px;background:var(--page)}.login-panel{display:grid;gap:14px;width:min(100%,380px);border:1px solid var(--line);border-radius:8px;padding:22px;background:#fff}.login-panel div{display:grid;gap:3px}.login-panel strong{font-size:1.5rem}.login-panel span,.login-panel p{margin:0;color:var(--muted);line-height:1.42}.field-label{margin-bottom:-8px;font-size:.78rem;font-weight:700;text-transform:uppercase}.project-facts{display:grid;gap:8px;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--panel-alt)}.project-facts div{display:flex;justify-content:space-between;gap:14px}.project-facts strong,.project-facts span{overflow-wrap:anywhere}.sidebar-heading,.rail-actions,.chat-header,.composer-row,.attachment-bar{display:flex;align-items:center;gap:10px}.sidebar-heading{justify-content:space-between;margin-top:4px}.rail-actions{flex-wrap:wrap;justify-content:flex-end}.rail-actions button{min-height:34px;padding:6px 10px}.sidebar-heading h2{margin:0;font-size:1rem}.section-heading{padding-top:4px;border-top:1px solid var(--line)}.section-heading>span{display:grid;place-items:center;min-width:26px;min-height:24px;border-radius:8px;color:var(--accent-strong);background:#dff1e9;font-size:.78rem;font-weight:800}.deliverable-list{display:grid;gap:8px}.dbm-card{display:grid;gap:10px;border:1px solid var(--line);border-radius:8px;padding:12px;background:#fff}.dbm-card.empty{background:var(--panel-alt)}.dbm-card-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.dbm-card-head div{display:grid;gap:3px;min-width:0}.dbm-card-head strong,.dbm-card-head span{overflow-wrap:anywhere}.dbm-card-head>span{color:var(--accent-strong);font-weight:800}.dbm-card p{margin:0;color:var(--muted);line-height:1.42}.progress-track{height:9px;overflow:hidden;border-radius:8px;background:#e7ece8}.progress-track div{height:100%;border-radius:inherit;background:var(--accent)}.dbm-field-list{display:grid;gap:6px}.dbm-field{display:flex;justify-content:space-between;gap:8px;border:1px solid var(--line);border-radius:8px;padding:7px 8px;font-size:.82rem}.dbm-field span{color:var(--ink);overflow-wrap:anywhere}.dbm-field strong{color:var(--muted);text-transform:uppercase;font-size:.68rem}.dbm-field.filled{border-color:#b8ddd1;background:#edf8f4}.dbm-field.filled strong{color:var(--accent-strong)}.dbm-field.omitted{border-color:#e1d2b8;background:#faf3e7}.tool-card{display:grid;gap:12px;border:1px solid var(--line);border-radius:8px;padding:12px;background:#fff}.tool-group{display:flex;flex-wrap:wrap;gap:8px}.tool-group strong{flex-basis:100%;font-size:.82rem;color:var(--muted);text-transform:uppercase}.tool-group button{min-height:34px;padding:6px 9px}.deliverable-row{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:10px;align-items:center;border:1px solid var(--line);border-radius:8px;padding:10px;background:#fff}.deliverable-row strong,.deliverable-row span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.deliverable-icon{display:grid;place-items:center;min-height:34px;border-radius:8px;color:var(--accent-strong);background:#dff1e9;font-size:.72rem;font-weight:800}.download-button{min-height:32px;padding:6px 9px}.chat-surface{display:grid;grid-template-rows:64px minmax(0,1fr) auto;min-width:0;height:100vh;background:#fbfcfa}.chat-header{justify-content:space-between;border-bottom:1px solid var(--line);padding:0 22px;background:#fff}.chat-header div{display:flex;align-items:center;gap:10px}.status-dot{width:10px;height:10px;border-radius:50%;background:var(--accent)}.message-list{display:grid;align-content:start;gap:18px;overflow:auto;padding:26px}.message{display:flex;gap:10px;max-width:860px}.message.user{justify-self:end;flex-direction:row-reverse}.avatar{display:grid;flex:0 0 38px;place-items:center;width:38px;height:38px;border-radius:8px;color:#fff;background:var(--accent-strong);font-size:.78rem;font-weight:800}.message.assistant .avatar{background:#59645f}.message-body{min-width:0;max-width:min(720px,72vw);border:1px solid var(--line);border-radius:8px;padding:12px 14px;background:#fff}.message.user .message-body{color:#fff;border-color:var(--accent-strong);background:var(--accent-strong)}.message-body p{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.52}.message-body time{display:block;margin-top:8px;font-size:.74rem}.message.user .message-body time{color:#ffffffc2}.attachment-pill,.attachment-bar{border-radius:8px;background:#dff1e9}.attachment-pill{display:inline-block;margin-bottom:8px;padding:4px 8px;color:var(--accent-strong);font-size:.78rem;font-weight:700}.composer{border-top:1px solid var(--line);padding:14px 18px 16px;background:#fff}.composer-row{align-items:flex-end}.composer-row textarea{flex:1}.composer-note{display:block;margin-top:8px;text-align:center;font-size:.74rem}.attachment-bar{justify-content:space-between;margin-bottom:10px;padding:8px 10px}.attachment-bar button{min-height:32px;padding:5px 9px}.error-text{margin:0 0 10px;color:var(--warning);font-weight:700;overflow-wrap:anywhere}@media(max-width:860px){.saddle-shell{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr)}.sidebar-resize-handle{display:none}.saddle-sidebar{max-height:42vh;border-right:0;border-bottom:1px solid var(--line)}.chat-surface{height:58vh}.message-body{max-width:78vw}}@media(max-width:560px){.message-list{padding:16px 12px}.composer-row{flex-wrap:wrap}.composer-row textarea{flex-basis:100%;order:-1}}