:root{--bg: #0f1117;--panel: #171a23;--border: #2a2e3a;--text: #e6e8ee;--muted: #9aa1b1;--accent: #6366f1;--accent-hover: #4f52d6;--danger: #ef4444;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,Segoe UI,Roboto,sans-serif;overflow-x:hidden}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:32px;width:320px;display:flex;flex-direction:column;gap:12px}.login-card h1{margin:0;font-size:1.3rem}.subtitle{color:var(--muted);margin:0 0 8px}label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--muted)}input,textarea{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px;color:var(--text);font-size:.95rem;font-family:inherit}button{display:inline-flex;align-items:center;gap:6px;justify-content:center;background:var(--accent);color:#fff;border:none;border-radius:8px;padding:10px 16px;cursor:pointer;font-size:.9rem}button:hover{background:var(--accent-hover)}button:disabled{opacity:.6;cursor:not-allowed}button.ghost{background:transparent;border:1px solid var(--border);color:var(--muted)}.error{color:var(--danger);font-size:.85rem}.app-layout{display:grid;grid-template-columns:280px 1fr;min-height:100vh}.history-panel{background:var(--panel);border-right:1px solid var(--border);padding:20px}.history-panel h2{display:flex;align-items:center;gap:6px;font-size:.95rem;color:var(--muted)}.history-panel ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.history-panel li{cursor:pointer;padding:8px;border-radius:8px;display:flex;flex-direction:column;gap:2px;position:relative}.history-panel li:hover{background:var(--bg)}.history-desc{font-size:.85rem;padding-right:20px}.history-date{font-size:.7rem;color:var(--muted)}.history-delete{position:absolute;top:8px;right:8px;background:none;border:none;padding:2px;cursor:pointer;color:var(--muted);display:none;border-radius:4px}.history-panel li:hover .history-delete{display:inline-flex}.history-delete:hover{color:#dc2626}.main-panel{padding:24px 32px;display:flex;flex-direction:column;gap:20px;min-width:0}.topbar{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-wrap:wrap}.topbar h1{margin:0;font-size:1.4rem}.topbar-actions{display:flex;gap:8px;flex-wrap:wrap}.topbar-actions button{white-space:nowrap}.explanation{color:var(--muted);font-size:.9rem}.warnings{color:#f59e0b;font-size:.85rem;margin:0;padding-left:18px}.hint{color:var(--muted);font-size:.8rem}.empty-state{color:var(--muted)}.trainer-form,.report-form,.report-panel{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:16px;display:flex;flex-direction:column;gap:10px}.tabs{display:flex;gap:8px}.tab{background:transparent;border:1px solid var(--border);color:var(--muted)}.tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.sql-header{display:flex;align-items:center;justify-content:space-between}.sql-header h2{margin:0;font-size:1.05rem}.sql-block{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px;font-family:Fira Code,monospace;font-size:.85rem;white-space:pre-wrap;word-break:break-word;margin:0}.mapping-table{border-collapse:collapse;width:100%;font-size:.85rem}.mapping-table th,.mapping-table td{border-bottom:1px solid var(--border);padding:6px 10px;text-align:left}.mapping-table th{color:var(--muted);font-weight:500}.mapping-correction-input{width:100%;font-size:.85rem;padding:4px 6px;border-radius:6px;border:1px solid var(--border);background:var(--bg);color:var(--text)}.ghost.small{padding:2px 8px;font-size:.78rem;gap:4px}.mapping-saved-badge{color:#22c55e;display:inline-flex;align-items:center}.refine-history{display:flex;flex-direction:column;gap:4px;font-size:.85rem}.history-user{color:var(--text)}.history-assistant{color:var(--muted)}.refine-form{display:flex;gap:8px}.refine-form input{flex:1}.learned-summary{font-size:.85rem;color:var(--text)}