*{margin:0;padding:0;box-sizing:border-box}:root{--bg: #07111f;--surface: rgba(255, 255, 255, .78);--surface-solid: #ffffff;--surface-soft: #f8fafc;--border: rgba(15, 23, 42, .08);--text: #0f172a;--muted: #64748b;--primary: #0f766e;--primary-dark: #115e59;--accent: #2563eb;--user: linear-gradient(135deg, #0f766e 0%, #2563eb 100%);--shadow: 0 24px 70px rgba(15, 23, 42, .18);--soft-shadow: 0 12px 35px rgba(15, 23, 42, .08)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;height:100vh;overflow:hidden;background:radial-gradient(circle at top left,rgba(37,99,235,.35),transparent 35%),radial-gradient(circle at bottom right,rgba(15,118,110,.35),transparent 35%),linear-gradient(135deg,#020617,#0f172a);color:var(--text)}.app-container{display:flex;height:calc(100vh - 28px);margin:14px;border-radius:28px;overflow:hidden;background:#ffffffd1;-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.35)}.sidebar{width:310px;background:#f8fafcdb;border-right:1px solid var(--border);display:flex;flex-direction:column;transition:all .28s ease;flex-shrink:0}.sidebar.collapsed{width:0;min-width:0;overflow:hidden}.sidebar-header{padding:22px;border-bottom:1px solid var(--border)}.new-chat-btn{width:100%;padding:13px 16px;border:none;border-radius:16px;background:linear-gradient(135deg,#0f766e,#2563eb);color:#fff;font-size:14px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;box-shadow:0 12px 28px #2563eb42;transition:all .2s ease}.new-chat-btn:hover{transform:translateY(-2px);box-shadow:0 18px 36px #2563eb57}.chat-history{flex:1;overflow-y:auto;padding:14px}.chat-item{padding:14px 15px;margin-bottom:8px;border-radius:16px;cursor:pointer;color:var(--text);border:1px solid transparent;transition:all .2s ease}.chat-item:hover{background:#2563eb12;border-color:#2563eb1f}.chat-item.active{background:#fff;border-color:#0f766e2e;box-shadow:var(--soft-shadow)}.chat-item-title{font-size:14px;font-weight:700;margin-bottom:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-item-preview{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.main-content{flex:1;display:flex;flex-direction:column;background:linear-gradient(180deg,#fffffff5,#f8fafceb)}.chat-header{height:78px;padding:0 28px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:16px;background:#ffffffb8;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.sidebar-toggle{width:42px;height:42px;border:1px solid var(--border);background:#fff;border-radius:14px;font-size:17px;color:var(--muted);cursor:pointer;transition:all .2s ease;box-shadow:0 8px 20px #0f172a0d}.sidebar-toggle:hover{color:var(--primary);transform:translateY(-1px)}.chat-header h1{font-size:22px;font-weight:800;letter-spacing:-.04em;color:var(--text)}.chat-header h1:after{content:"AI Maritime Operations Copilot";display:block;font-size:12px;font-weight:600;letter-spacing:0;color:var(--muted);margin-top:2px}.chat-container{flex:1;overflow-y:auto;position:relative}.welcome-message{display:flex;align-items:center;justify-content:center;min-height:100%;text-align:center;padding:40px}.welcome-content{max-width:620px;padding:42px;border-radius:30px;background:#ffffffb8;border:1px solid var(--border);box-shadow:var(--soft-shadow)}.welcome-content h2{font-size:36px;font-weight:850;letter-spacing:-.06em;margin-bottom:14px;background:linear-gradient(135deg,#0f766e,#2563eb);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.welcome-content p{font-size:16px;color:var(--muted)}.messages-container{padding:28px;max-width:1180px;margin:0 auto;width:100%}.message{margin-bottom:26px;display:flex;gap:14px;animation:fadeUp .22s ease}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message.user{flex-direction:row-reverse}.message-avatar{width:42px;height:42px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;box-shadow:var(--soft-shadow)}.message.user .message-avatar{background:var(--user);color:#fff}.message.assistant .message-avatar{background:#fff;color:var(--primary);border:1px solid rgba(15,118,110,.15)}.message-content{flex:1;max-width:86%}.message-bubble{padding:18px 22px;border-radius:22px;font-size:15px;line-height:1.65;box-shadow:var(--soft-shadow)}.message.user .message-bubble{background:var(--user);color:#fff;margin-left:auto;border-bottom-right-radius:8px}.message.assistant .message-bubble{background:#fff;color:var(--text);border:1px solid var(--border);border-bottom-left-radius:8px}.message-bubble h1,.message-bubble h2,.message-bubble h3,.message-bubble h4{margin:18px 0 10px;color:var(--text);letter-spacing:-.03em}.message-bubble h1{font-size:1.55em}.message-bubble h2{font-size:1.35em}.message-bubble h3{font-size:1.15em}.message-bubble p{margin:8px 0}.message-bubble ul,.message-bubble ol{margin:10px 0;padding-left:22px}.message-bubble li{margin:5px 0}.message-bubble blockquote{border-left:4px solid var(--primary);margin:16px 0;padding:10px 16px;background:#0f766e0f;border-radius:12px}.message-bubble code{background:#2563eb14;color:#1d4ed8;padding:3px 7px;border-radius:8px;font-size:.9em}.message-bubble pre{background:#0f172a;color:#e5e7eb;padding:18px;border-radius:16px;overflow-x:auto;margin:16px 0}.message-bubble pre code{background:none;color:inherit;padding:0}.message-bubble a{color:var(--accent);text-decoration:none;font-weight:600}.message-status{margin-top:10px}.status-indicator{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;background:#0f766e14;border:1px solid rgba(15,118,110,.12);border-radius:999px;font-size:12px;color:var(--primary-dark);font-weight:700}.typing-indicator{display:flex;gap:5px;padding:8px 0}.typing-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);animation:typing 1.4s infinite ease-in-out}.typing-dot:nth-child(1){animation-delay:-.32s}.typing-dot:nth-child(2){animation-delay:-.16s}@keyframes typing{0%,80%,to{transform:scale(.75);opacity:.4}40%{transform:scale(1);opacity:1}}.renderable-table{margin:18px 0;border-radius:18px;overflow:hidden;border:1px solid var(--border);background:#fff;box-shadow:var(--soft-shadow)}.table-title{padding:14px 18px;background:#f8fafc;font-weight:800;color:var(--text);border-bottom:1px solid var(--border)}.table-container{overflow-x:auto}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:13px 16px;text-align:left;border-bottom:1px solid #eef2f7}.data-table th{background:#f8fafc;color:var(--primary-dark);font-size:12px;text-transform:uppercase;letter-spacing:.04em}.data-table td{font-size:14px;color:#334155}.data-table tr:hover{background:#2563eb0a}.input-container{padding:18px 28px 24px;border-top:1px solid var(--border);background:#ffffffc7;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.input-wrapper{max-width:1180px;margin:0 auto;display:flex;align-items:flex-end;gap:12px;padding:12px 14px 12px 18px;background:#fff;border:1px solid var(--border);border-radius:22px;box-shadow:0 14px 40px #0f172a1a;transition:all .2s ease}.input-wrapper:focus-within{border-color:#2563eb73;box-shadow:0 18px 50px #2563eb24}#messageInput{flex:1;border:none;outline:none;resize:none;background:transparent;font-size:15px;line-height:1.55;max-height:140px;color:var(--text);padding:9px 0}#messageInput::placeholder{color:#94a3b8}.send-btn{width:46px;height:46px;border:none;border-radius:16px;background:linear-gradient(135deg,#0f766e,#2563eb);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 28px #2563eb42;transition:all .2s ease}.send-btn:hover:not(:disabled){transform:translateY(-2px) scale(1.02)}.send-btn:disabled{background:#cbd5e1;cursor:not-allowed;box-shadow:none}.export-buttons button{border-radius:12px!important}.loading-overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:none;align-items:center;justify-content:center;z-index:1000;background:#0206178c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.loading-overlay.show{display:flex}.loading-spinner{width:42px;height:42px;border:4px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-message{background:#fff1f2;color:#9f1239;border:1px solid #fecdd3;padding:13px 16px;border-radius:16px;margin:14px 0;display:flex;align-items:center;gap:10px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#64748b59;border-radius:999px}::-webkit-scrollbar-thumb:hover{background:#64748b8c}@media (max-width: 768px){.app-container{margin:0;height:100vh;border-radius:0}.sidebar{position:absolute;top:0;left:0;height:100%;z-index:100;box-shadow:12px 0 40px #0f172a2e}.sidebar.collapsed{transform:translate(-100%);width:310px}.chat-header{padding:0 18px}.messages-container{padding:18px}.message-content{max-width:90%}.input-container{padding:14px}.welcome-content{padding:28px}.welcome-content h2{font-size:28px}}