:root{--bg: #020617;--bg-1: #0f172a;--bg-2: #111827;--bg-3: #1f2937;--border: rgba(148, 163, 184, .12);--accent: #22c55e;--accent-dark: #16a34a;--accent-glow: rgba(34, 197, 94, .35);--user-bubble: #1d4ed8;--text: #f9fafb;--text-2: #cbd5e1;--text-muted: #64748b;--error: #f87171;--error-bg: rgba(248, 113, 113, .08);--success: #4ade80;--success-bg: rgba(74, 222, 128, .08);--radius: 10px;--radius-lg: 16px;--shadow: 0 4px 24px rgba(0,0,0,.45);--font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--sidebar-w: 260px;--header-h: 56px}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none}.loading-screen{min-height:100dvh;display:flex;align-items:center;justify-content:center}.loading-spinner{width:36px;height:36px;border:2.5px solid var(--bg-3);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:0 20px;height:48px;border-radius:999px;border:none;background:linear-gradient(145deg,var(--accent),var(--accent-dark));color:#022c22;font-weight:700;font-size:15px;cursor:pointer;box-shadow:0 4px 16px var(--accent-glow);transition:transform .12s,box-shadow .12s,opacity .12s;white-space:nowrap;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 8px 24px var(--accent-glow)}.btn-primary:active:not(:disabled){transform:scale(.97)}.btn-primary:disabled{opacity:.45;cursor:default;box-shadow:none}.btn-primary.btn-full{width:100%}.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:0 16px;height:44px;border-radius:999px;border:1px solid var(--border);background:transparent;color:var(--text-2);font-size:14px;cursor:pointer;transition:border-color .15s,color .15s,background .15s;white-space:nowrap;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.btn-ghost:hover:not(:disabled){border-color:#94a3b84d;background:var(--bg-2);color:var(--text)}.btn-ghost:disabled{opacity:.5;cursor:default}.btn-danger{display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 14px;border-radius:999px;border:1px solid rgba(248,113,113,.25);background:transparent;color:var(--error);font-size:13px;cursor:pointer;transition:background .15s,border-color .15s;white-space:nowrap;touch-action:manipulation}.btn-danger:hover{background:var(--error-bg);border-color:#f8717166}.btn-icon{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;border:1px solid var(--border);background:transparent;color:var(--text-muted);cursor:pointer;transition:background .15s,color .15s;touch-action:manipulation;-webkit-tap-highlight-color:transparent;flex-shrink:0}.btn-icon:hover{background:var(--bg-2);color:var(--text)}.btn-icon-lg{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;border:none;background:transparent;color:var(--text-muted);cursor:pointer;transition:background .15s,color .15s;touch-action:manipulation;-webkit-tap-highlight-color:transparent;flex-shrink:0}.btn-icon-lg:hover{background:var(--bg-2);color:var(--text)}.btn-icon-lg:active{background:var(--bg-3)}.btn-sm{height:32px;padding:0 12px;font-size:12px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-size:13px;font-weight:600;color:var(--text-2)}.field input,.field select,.field textarea{padding:13px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;outline:none;transition:border-color .15s,box-shadow .15s;resize:vertical;-webkit-appearance:none;-moz-appearance:none;appearance:none}.field textarea{font-size:15px}.field input::placeholder,.field textarea::placeholder{color:var(--text-muted)}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.field select{cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.form-error{padding:11px 14px;border-radius:var(--radius);border:1px solid rgba(248,113,113,.3);background:var(--error-bg);color:var(--error);font-size:14px}.form-success{padding:11px 14px;border-radius:var(--radius);border:1px solid rgba(74,222,128,.3);background:var(--success-bg);color:var(--success);font-size:14px}.card{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px}.tag{display:inline-block;padding:3px 9px;border-radius:999px;font-size:11px;font-weight:600;text-transform:capitalize;background:var(--bg-3);color:var(--text-2);border:1px solid var(--border)}.tag-doc{background:#6366f126;color:#a5b4fc;border-color:#6366f14d}.badge{display:inline-block;padding:3px 9px;border-radius:999px;font-size:11px;font-weight:700}.badge-neutral{background:var(--bg-3);color:var(--text-muted)}.badge-info{background:#38bdf81f;color:#7dd3fc}.badge-success{background:#4ade801f;color:#4ade80}.badge-error{background:var(--error-bg);color:var(--error)}.badge-admin{background:#a855f71f;color:#c084fc}.badge-staff{background:var(--bg-3);color:var(--text-2)}.empty-state{text-align:center;color:var(--text-muted);font-size:14px;padding:48px 0}.login-page{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px 20px;background:radial-gradient(circle at top,#1f2937 0,#020617,#000)}.login-card{width:100%;max-width:400px;background:var(--bg-1);border:1px solid var(--border);border-radius:20px;padding:40px 28px;box-shadow:var(--shadow)}.login-logo{display:flex;align-items:center;justify-content:center;width:64px;height:64px;border-radius:18px;background:linear-gradient(145deg,var(--accent),var(--accent-dark));margin:0 auto 20px;box-shadow:0 8px 32px var(--accent-glow);color:#022c22}.login-header{text-align:center;margin-bottom:36px}.login-header h1{margin:0 0 6px;font-size:28px;font-weight:800;letter-spacing:.04em}.login-header p{margin:0;font-size:14px;color:var(--text-muted)}.login-form{display:flex;flex-direction:column;gap:18px}.chat-layout{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden;background:var(--bg)}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:0 6px;height:var(--header-h);background:var(--bg-1);border-bottom:1px solid var(--border);flex-shrink:0;position:relative;z-index:10}.chat-header-title{position:absolute;left:50%;transform:translate(-50%);font-size:16px;font-weight:800;letter-spacing:.06em;pointer-events:none}.sidebar-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000a6;z-index:40;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:fadeIn .18s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.sidebar{position:fixed;top:0;left:0;bottom:0;width:min(300px,88vw);background:var(--bg-1);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:50;transform:translate(-100%);transition:transform .26s cubic-bezier(.4,0,.2,1);overflow:hidden}.sidebar.open{transform:translate(0)}@media (min-width: 768px){.chat-layout{flex-direction:row}.chat-header,.sidebar-backdrop{display:none}.sidebar{position:relative;transform:none!important;width:var(--sidebar-w);flex-shrink:0;z-index:auto;transition:none}.sidebar-close{display:none}}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px 14px 12px;border-bottom:1px solid var(--border);flex-shrink:0}.sidebar-logo{font-size:15px;font-weight:800;letter-spacing:.06em}.sidebar-header-actions{display:flex;gap:4px}.session-list{flex:1;overflow-y:auto;padding:8px 6px;scrollbar-width:thin;scrollbar-color:var(--bg-3) transparent}.session-empty{font-size:13px;color:var(--text-muted);text-align:center;margin-top:32px;padding:0 16px;line-height:1.6}.session-item{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px;min-height:44px;border-radius:var(--radius);cursor:pointer;transition:background .12s;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.session-item:hover{background:var(--bg-2)}.session-item.active{background:var(--bg-3)}.session-title{flex:1;font-size:13px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-item.active .session-title{color:var(--text)}.session-delete{flex-shrink:0;display:none;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;border:none;background:transparent;color:var(--text-muted);cursor:pointer;transition:background .12s,color .12s}.session-delete:hover{background:#f8717126;color:var(--error)}.session-item:hover .session-delete,.session-item.active .session-delete{display:flex}.sidebar-footer{padding:8px 6px 16px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:2px;flex-shrink:0}.sidebar-link{display:flex;align-items:center;gap:10px;padding:10px 12px;min-height:44px;border-radius:var(--radius);font-size:13px;color:var(--text-muted);text-decoration:none;background:transparent;border:none;cursor:pointer;width:100%;text-align:left;transition:background .12s,color .12s;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.sidebar-link:hover{background:var(--bg-2);color:var(--text)}.chat-pane{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0;min-height:0}.messages{flex:1;overflow-y:auto;padding:20px 14px;display:flex;flex-direction:column;gap:12px;scrollbar-width:thin;scrollbar-color:var(--bg-3) transparent;overscroll-behavior-y:contain}@media (min-width: 768px){.messages{padding:32px 20% 20px}}.chat-empty{margin:auto;text-align:center;max-width:300px}.chat-empty-icon{display:flex;align-items:center;justify-content:center;width:60px;height:60px;border-radius:18px;background:#22c55e1a;margin:0 auto 16px;color:var(--accent)}.chat-empty h3{margin:0 0 8px;font-size:18px;font-weight:700}.chat-empty p{color:var(--text-muted);font-size:14px;line-height:1.6;margin:0}.message{max-width:88%;padding:12px 16px;border-radius:var(--radius-lg);border:1px solid var(--border);font-size:15px;line-height:1.6}.message.user{margin-left:auto;background:linear-gradient(145deg,var(--user-bubble),#2563eb);color:#eff6ff;border-color:transparent}.message.assistant{margin-right:auto;background:var(--bg-1)}@media (min-width: 768px){.message{max-width:78%;font-size:14px}}.message-sender{font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);margin-bottom:6px}.message.user .message-sender{color:#bfdbfe}.message-text{white-space:pre-wrap}.message-text p{margin:0 0 8px}.message-text p:last-child{margin-bottom:0}.message-text ul,.message-text ol{margin:6px 0;padding-left:20px}.message-text li{margin-bottom:4px}.message-text code{background:var(--bg-3);padding:2px 6px;border-radius:4px;font-size:13px}.thinking{display:flex;align-items:center;gap:5px;padding:4px 0}.thinking span{display:block;width:7px;height:7px;border-radius:50%;background:var(--text-muted);animation:pulse 1.2s ease-in-out infinite}.thinking span:nth-child(2){animation-delay:.2s}.thinking span:nth-child(3){animation-delay:.4s}@keyframes pulse{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}.input-bar{display:flex;align-items:center;gap:8px;padding:10px 12px;padding-bottom:calc(10px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--border);background:var(--bg-1);flex-shrink:0}@media (min-width: 768px){.input-bar{padding:14px 20%}}.input-bar-field{flex:1;padding:12px 16px;border-radius:999px;border:1px solid rgba(148,163,184,.2);background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;outline:none;transition:border-color .15s,box-shadow .15s;-webkit-appearance:none;-moz-appearance:none;appearance:none}.input-bar-field::placeholder{color:var(--text-muted)}.input-bar-field:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.voice-btn{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;border:none;background:var(--bg-3);color:var(--text-muted);cursor:pointer;flex-shrink:0;transition:background .15s,color .15s;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.voice-btn:hover:not(:disabled){background:var(--bg-2);color:var(--text)}.voice-btn:disabled{opacity:.4;cursor:default}.voice-btn.listening{background:#f8717126;color:var(--error);animation:voicePulse 1.2s ease-in-out infinite}@keyframes voicePulse{0%,to{box-shadow:0 0 #f8717166}50%{box-shadow:0 0 0 8px #f8717100}}.send-btn{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;border:none;background:linear-gradient(145deg,var(--accent),var(--accent-dark));color:#022c22;cursor:pointer;flex-shrink:0;box-shadow:0 3px 12px var(--accent-glow);transition:transform .12s,box-shadow .12s,opacity .12s;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.send-btn:hover:not(:disabled){transform:scale(1.06);box-shadow:0 6px 20px var(--accent-glow)}.send-btn:active:not(:disabled){transform:scale(.95)}.send-btn:disabled{opacity:.4;cursor:default;box-shadow:none}.admin-layout{min-height:100dvh;display:flex;flex-direction:column;background:var(--bg)}.admin-header{display:flex;align-items:center;justify-content:space-between;padding:0 16px;height:var(--header-h);border-bottom:1px solid var(--border);background:var(--bg-1);position:sticky;top:0;z-index:10;flex-shrink:0}@media (min-width: 768px){.admin-header{padding:0 32px}}.admin-header-left{display:flex;align-items:center;gap:12px;min-width:0}.admin-header h1{margin:0;font-size:15px;font-weight:700;white-space:nowrap}.admin-back{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;color:var(--text-muted);text-decoration:none;transition:color .15s,background .15s;flex-shrink:0}.admin-back:hover{color:var(--text);background:var(--bg-2)}.admin-tabs{display:flex;padding:0 16px;border-bottom:1px solid var(--border);background:var(--bg-1);overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;flex-shrink:0}.admin-tabs::-webkit-scrollbar{display:none}@media (min-width: 768px){.admin-tabs{padding:0 32px}}.admin-tab{padding:0 16px;height:48px;font-size:14px;font-weight:600;color:var(--text-muted);background:transparent;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:color .15s,border-color .15s;margin-bottom:-1px;white-space:nowrap;touch-action:manipulation}.admin-tab:hover{color:var(--text-2)}.admin-tab.active{color:var(--text);border-bottom-color:var(--accent)}.admin-body{flex:1;padding:20px 16px;max-width:900px;width:100%;margin:0 auto}@media (min-width: 768px){.admin-body{padding:32px}}.admin-section{display:flex;flex-direction:column;gap:20px}.admin-section-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-wrap:wrap}.admin-section-header h2{margin:0 0 4px;font-size:18px;font-weight:700}.admin-section-desc{margin:0;font-size:13px;color:var(--text-muted);line-height:1.5}.filter-bar{display:flex;gap:8px;flex-wrap:wrap}.filter-input{flex:1;min-width:150px;padding:10px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-1);color:var(--text);font-size:15px;outline:none;-webkit-appearance:none}.filter-input:focus{border-color:var(--accent)}.filter-select{padding:10px 36px 10px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-1);color:var(--text);font-size:15px;outline:none;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}.filter-select:focus{border-color:var(--accent)}.entry-form{display:flex;flex-direction:column;gap:16px}.entry-form h3{margin:0;font-size:16px;font-weight:700}.form-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap}.field-row{display:flex;flex-direction:column;gap:14px}@media (min-width: 480px){.field-row{flex-direction:row}.field-row .field{flex:1}}.entry-list{display:flex;flex-direction:column;gap:10px}.entry-card{display:flex;flex-direction:column;gap:8px}.entry-meta{display:flex;gap:6px;flex-wrap:wrap}.entry-title{margin:0;font-size:15px;font-weight:700}.entry-preview{margin:0;font-size:13px;color:var(--text-muted);line-height:1.55}.entry-actions{display:flex;gap:8px;margin-top:4px;flex-wrap:wrap}.upload-area{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:40px 24px;border:2px dashed rgba(148,163,184,.2);border-radius:var(--radius-lg);cursor:pointer;transition:border-color .15s,background .15s;text-align:center;touch-action:manipulation;-webkit-tap-highlight-color:transparent;background:var(--bg-1)}.upload-area:hover{border-color:var(--accent);background:#22c55e0a}.upload-icon{color:var(--accent)}.upload-area p{margin:0;font-size:15px;color:var(--text-2)}.upload-types{display:flex;gap:5px;flex-wrap:wrap;justify-content:center;margin-top:2px}.upload-type-tag{padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600;background:var(--bg-3);color:var(--text-muted);font-family:monospace}.upload-hint{font-size:12px;color:var(--text-muted);margin-top:2px}.doc-list{display:flex;flex-direction:column;gap:8px}.doc-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.doc-info{display:flex;align-items:center;gap:10px;min-width:0;flex:1}.doc-icon{color:var(--text-muted);flex-shrink:0}.doc-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.doc-size{font-size:12px;color:var(--text-muted);white-space:nowrap}.doc-right{display:flex;align-items:center;gap:8px;flex-shrink:0;flex-wrap:wrap}.doc-error{font-size:12px;color:var(--error)}.user-list{display:flex;flex-direction:column;gap:8px}.user-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.user-info{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}.user-name{font-size:14px;font-weight:600}.user-email{font-size:12px;color:var(--text-muted)}.user-right{display:flex;align-items:center;gap:8px;flex-shrink:0}