:root{--bg: #f6f5f3;--card: #ffffff;--border: #e3e0da;--text: #2a2622;--text-muted: #7a7469;--accent: #c96a4f;--accent-dark: #a8543c;--me: #dce8e2;--partner: #ffffff;--assistant: #fbf3ea;--assistant-border: #e8d3ba;--solutions: #eef4ea;--solutions-border: #b9d2a4;--danger: #c94f4f;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button{font:inherit;cursor:pointer}.btn{border:1px solid var(--border);background:var(--card);color:var(--text);padding:.55rem 1.1rem;border-radius:8px;font-weight:600;transition:background .15s,border-color .15s}.btn:hover{border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-dark)}.btn-ghost{background:transparent;border-color:transparent}.btn-sm{padding:.35rem .7rem;font-size:.85rem}.splash{min-height:100vh;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem}.login-card,.pending-card,.gate-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:2.5rem 2rem;max-width:420px;width:100%;text-align:center;box-shadow:0 2px 12px #0000000a}.login-icon,.pending-icon{font-size:2.5rem;margin-bottom:.5rem}.login-subtitle,.gate-subtitle{color:var(--text-muted);margin-bottom:1.5rem}.login-error{background:#fdeceb;color:var(--danger);border-radius:8px;padding:.6rem .9rem;margin-bottom:1rem;font-size:.9rem}.google-btn{display:inline-flex;align-items:center;gap:.6rem;border:1px solid var(--border);border-radius:8px;padding:.7rem 1.3rem;text-decoration:none;color:var(--text);font-weight:600;background:#fff}.google-btn:hover{border-color:var(--accent)}.app-header{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.25rem;background:var(--card);border-bottom:1px solid var(--border)}.header-left{display:flex;align-items:center;gap:.5rem;font-weight:700}.header-logo{font-size:1.4rem}.header-right{display:flex;align-items:center;gap:.9rem}.header-partner{display:flex;align-items:center;gap:.5rem;color:var(--text-muted);font-size:.9rem}.avatar{width:28px;height:28px;border-radius:50%}.gate-choices{display:flex;flex-direction:column;gap:.9rem}.gate-divider{color:var(--text-muted);font-size:.85rem;margin:.3rem 0}.gate-form{display:flex;flex-direction:column;gap:.6rem;margin-top:.5rem}.code-input{font-family:SF Mono,Consolas,monospace;font-size:1.4rem;letter-spacing:.35rem;text-align:center;text-transform:uppercase;padding:.6rem;border:1px solid var(--border);border-radius:8px}.invite-code{font-family:SF Mono,Consolas,monospace;font-size:2.2rem;letter-spacing:.4rem;background:var(--bg);border:1px dashed var(--border);border-radius:10px;padding:1rem;margin:1.2rem 0}.app{display:flex;flex-direction:column;height:100vh}.chat-room{flex:1;display:flex;flex-direction:column;min-height:0}.message-list{flex:1;overflow-y:auto;padding:1rem 1rem .5rem;display:flex;flex-direction:column;gap:.6rem}.bubble-row{display:flex}.bubble-row.mine{justify-content:flex-end}.bubble-row.partner{justify-content:flex-start}.bubble-row.assistant{justify-content:center}.bubble{max-width:72%;padding:.65rem .95rem;border-radius:14px;line-height:1.4;white-space:pre-wrap;word-wrap:break-word}.bubble.mine{background:var(--me);border-bottom-right-radius:4px}.bubble.partner{background:var(--partner);border:1px solid var(--border);border-bottom-left-radius:4px}.bubble.assistant{max-width:85%;background:var(--assistant);border:1px solid var(--assistant-border)}.bubble.solutions{max-width:90%;background:var(--solutions);border:1px solid var(--solutions-border)}.bubble.reveal{max-width:90%;background:var(--assistant);border:1px solid var(--assistant-border);border-left:4px solid var(--accent)}.bubble-sender{font-size:.72rem;font-weight:700;color:var(--text-muted);margin-bottom:.15rem}.bubble.assistant .bubble-sender,.bubble.solutions .bubble-sender{color:var(--accent-dark)}.solution-feedback{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;margin-top:.7rem;padding-top:.6rem;border-top:1px solid var(--solutions-border)}.feedback-prompt{font-size:.85rem;font-weight:600;color:var(--text-muted);margin-right:.2rem}.solution-feedback.resolved{flex-direction:column;align-items:flex-start;gap:.25rem}.feedback-status{font-size:.85rem}.feedback-note{font-size:.8rem;color:var(--text-muted);font-style:italic;margin-top:.2rem}.reject-reason{display:flex;flex-direction:column;gap:.5rem;width:100%}.reject-reason textarea{resize:none;border:1px solid var(--border);border-radius:8px;padding:.5rem .7rem;font:inherit;min-height:2.4rem}.reject-actions{display:flex;gap:.5rem}.controls-bar{display:flex;align-items:center;justify-content:space-between;gap:.6rem;padding:.6rem 1rem;border-top:1px solid var(--border);background:var(--card);flex-wrap:wrap}.confirm-toggle{border-radius:999px;padding:.4rem .9rem;font-size:.85rem}.confirm-toggle.confirmed{background:var(--solutions);border-color:var(--solutions-border)}.partner-badge{font-size:.8rem;color:var(--text-muted)}.partner-badge.confirmed{color:#4d7a35;font-weight:600}.composer{display:flex;gap:.6rem;padding:.75rem 1rem 1rem}.composer textarea{flex:1;resize:none;border:1px solid var(--border);border-radius:10px;padding:.6rem .8rem;font:inherit;min-height:2.6rem;max-height:8rem}.session-footer{display:flex;justify-content:center;padding:.6rem}