*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',system-ui,sans-serif;background:#0b0f19;color:#fff;height:100vh;overflow:hidden}
.hidden{display:none!important}
.auth-screen{display:flex;justify-content:center;align-items:center;height:100vh;background:radial-gradient(circle at center,#1a233d 0%,#0b0f19 100%)}
.login-box{background:#131a2a;padding:2.5rem;border-radius:16px;border:1px solid rgba(255,255,255,0.08);width:100%;max-width:400px}
.brand{text-align:center;margin-bottom:2rem}.brand h2{font-size:1.8rem}.brand h2 span{color:#00f0ff}
.brand-sub{color:#64748b;font-size:.85rem;margin-top:4px}
.error-msg{background:rgba(239,68,68,0.1);color:#ef4444;padding:10px;border-radius:8px;margin-bottom:1rem;font-size:.85rem;text-align:center;display:none}
.error-msg.show{display:block}
.input-group{margin-bottom:1.2rem}.input-group label{display:block;color:#64748b;margin-bottom:.4rem;font-size:.85rem}
.input-group input{width:100%;padding:.85rem;background:#1a233d;border:1px solid rgba(255,255,255,0.08);border-radius:8px;color:#fff;outline:none;font-size:.95rem}
.input-group input:focus{border-color:#00f0ff}
.btn-primary{width:100%;padding:.85rem;margin-top:.5rem;background:linear-gradient(135deg,#8a2be2,#00f0ff);border:none;border-radius:8px;color:#fff;font-weight:bold;font-size:.95rem;cursor:pointer}
.btn-primary:hover{opacity:.9}.btn-primary:disabled{opacity:.5;cursor:default}

/* LAYOUT */
.dashboard-layout{height:100vh;position:relative}
.top-border{position:absolute;top:18px;left:60px;right:0;height:1px;background:rgba(255,255,255,0.06)}

/* LEFT ICONS */
.left-icons{position:absolute;left:12px;top:8px;display:flex;flex-direction:column;align-items:center;gap:6px;z-index:10}
.left-icons .logo svg{display:block;opacity:.8}
.left-icons button{background:transparent;border:none;color:#666;font-size:1.2rem;width:36px;height:36px;border-radius:8px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}
.left-icons button:hover{background:rgba(0,240,255,0.08);color:#00f0ff}

/* SIDEBAR */
#sidebar{width:280px;background:#131a2a;height:100vh;overflow-y:auto;padding:20px;position:fixed;left:0;top:0;z-index:100;transform:translateX(-100%);transition:transform .25s}
#sidebar.open{transform:translateX(0)}
#sidebar::-webkit-scrollbar{width:4px}#sidebar::-webkit-scrollbar-thumb{background:#1a233d;border-radius:2px}
.sidebar-header{display:flex;align-items:center;gap:10px;margin-bottom:24px}
.sidebar-header h3{font-size:1rem;flex:1}.user-badge{font-size:.65rem;background:#1a233d;padding:2px 8px;border-radius:10px;color:#00f0ff}
#sidebar-close{background:none;border:none;color:#888;font-size:1.1rem;cursor:pointer}
#sidebar-close:hover{color:#fff}
.menu-section ul{list-style:none;padding:0}
.modulo-group{margin-bottom:2px}
.modulo-header{display:flex;align-items:center;gap:8px;cursor:pointer;padding:8px 10px;border-radius:6px;color:#bbb;font-size:.8rem;font-weight:600;transition:all .15s}
.modulo-header:hover{background:rgba(255,255,255,.04);color:#fff}
.modulo-header .chevron{font-size:.6rem;transition:transform .2s;color:#555;margin-left:auto}
.modulo-body{max-height:0;overflow:hidden;transition:max-height .3s ease}
.modulo-body.open{max-height:2000px}
.modulo-body .modulo-empty{padding:10px 10px 10px 16px;font-size:.75rem;color:#555;font-style:italic}
.cat-item{display:flex;align-items:center;gap:8px;cursor:pointer;padding:6px 10px;border-radius:6px;color:#999;font-size:.8rem;margin-bottom:1px}
.cat-item:hover{background:rgba(255,255,255,.04);color:#fff}
.cat-item .icon{font-size:.9rem}.cat-item .name{flex:1}
.cat-item .count{font-size:.6rem;background:rgba(255,255,255,.06);padding:1px 6px;border-radius:8px;color:#555}

/* Accordion */
.cat-wrapper{margin-bottom:1px}
.cat-header{display:flex;align-items:center;gap:6px;cursor:pointer;padding:7px 10px;border-radius:6px;color:#999;font-size:.8rem;transition:all .15s}
.cat-header:hover{background:rgba(255,255,255,.04);color:#fff}
.cat-header .icon{font-size:.9rem}.cat-header .name{flex:1}
.cat-header .count{font-size:.6rem;background:rgba(255,255,255,.06);padding:1px 6px;border-radius:8px;color:#555}
.cat-header .chevron{font-size:.65rem;transition:transform .2s;color:#555}
.cat-body{max-height:0;overflow:hidden;transition:max-height .3s ease;position:relative}
.cat-body.open{max-height:500px}
.cat-body::before{content:'';position:absolute;left:14px;top:0;bottom:0;width:1px;background:rgba(255,255,255,.06)}
.cat-query{padding:6px 10px 6px 30px;font-size:.78rem;color:#777;cursor:pointer;border-radius:4px;transition:all .12s;position:relative}
.cat-query::before{content:'';position:absolute;left:10px;top:50%;width:16px;height:1px;background:rgba(255,255,255,.06)}
.cat-query:hover{color:#00f0ff;background:rgba(0,240,255,.05)}
.cat-loading,.cat-empty{padding:6px 10px 6px 30px;font-size:.75rem;color:#555}
.sidebar-footer{margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.06)}
.btn-admin{width:100%;padding:7px;background:rgba(0,240,255,.08);border:1px solid rgba(0,240,255,.15);border-radius:8px;color:#00f0ff;cursor:pointer;font-size:.8rem;margin-bottom:6px}
.btn-admin:hover{background:rgba(0,240,255,.15)}
#logout-btn{width:100%;padding:7px;background:rgba(239,68,68,.08);border:1px solid rgba(239,68,68,.15);border-radius:8px;color:#fca5a5;cursor:pointer;font-size:.8rem}
#logout-btn:hover{background:rgba(239,68,68,.15)}
#logout-btn:hover{background:rgba(239,68,68,.15)}

/* WORKSPACE */
.workspace{height:100vh;display:flex;flex-direction:column;padding-left:56px;background:radial-gradient(circle at 50% 42%,rgba(0,242,254,.25) 0%,rgba(15,23,42,.35) 30%,transparent 65%)}
#chat-box::-webkit-scrollbar{width:5px}#chat-box::-webkit-scrollbar-thumb{background:#1a233d;border-radius:3px}

/* WELCOME + INPUT CENTERED (initial) */
.welcome-fixed{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;z-index:5;display:flex;flex-direction:column;align-items:center;gap:20px;width:100%;max-width:600px;padding:0 24px;transition:all .5s ease}
.welcome-fixed .welcome-title{font-size:2.6rem;color:#e0e0e0;font-weight:700;transition:opacity .4s ease}
.welcome-fixed .welcome-sub{font-size:.85rem;color:#555;transition:opacity .4s ease}
.welcome-fixed .input-wrapper{display:flex;background:#131a2a;border:1px solid rgba(255,255,255,0.08);padding:6px 12px;border-radius:24px;align-items:center;transition:border-color .2s,transform .5s ease;width:100%}
.welcome-fixed .input-wrapper:focus-within{border-color:#00f0ff}
.welcome-fixed input{flex:1;background:transparent;border:none;outline:none;color:#fff;font-size:.95rem;padding:8px 4px}
.welcome-fixed .send-circle{background:#00f0ff;border:none;width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1rem;color:#0b0f19;display:flex;align-items:center;justify-content:center}
.welcome-fixed .send-circle:hover{transform:scale(1.1)}

/* After chatting: title fades, input slides to bottom-center */
.welcome-fixed.bottom{top:auto;bottom:16px;transform:translate(-50%,0);gap:0;z-index:2}
.welcome-fixed.bottom .welcome-title{opacity:0;pointer-events:none;height:0;margin:0}
.welcome-fixed.bottom .welcome-sub{opacity:0;pointer-events:none;height:0;margin:0}
.welcome-fixed.bottom .input-wrapper{max-width:650px;background:#131a2a}

/* INPUT spacer */
#input-center{display:none}

.ai-toggle{position:fixed;left:62px;bottom:16px;z-index:10;display:flex;align-items:center;gap:6px;cursor:pointer;padding:4px 8px;border-radius:8px;transition:background .2s}
.ai-toggle:hover{background:rgba(255,255,255,.04)}
.ai-toggle-label{font-size:.65rem;color:#555;font-weight:600}
.ai-toggle-switch{width:32px;height:16px;background:#1a233d;border-radius:10px;position:relative;transition:background .2s}
.ai-toggle-switch.on{background:#00f0ff}
.ai-toggle-knob{width:12px;height:12px;background:#555;border-radius:50%;position:absolute;top:2px;left:2px;transition:all .2s}
.ai-toggle-switch.on .ai-toggle-knob{background:#0b0f19;left:18px}
.ai-toggle-status{font-size:.6rem;color:#555;font-weight:600;width:18px}
.ai-toggle-status.on{color:#00f0ff}

@keyframes slideDown{0%{margin:0 auto auto;flex:1}100%{margin:auto 0 0;flex:none}}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* Messages */
#chat-box{padding:30px 20px 100px;display:flex;flex-direction:column;gap:24px;flex:1;overflow-y:auto;opacity:0;transition:opacity .4s}
#chat-box.show{opacity:1}
.message{animation:fadeIn .3s;max-width:85%}
.message.user{margin-left:auto}
.sender{font-weight:bold;font-size:.8rem;display:block;margin-bottom:4px;color:#00f0ff}
.message .content{background:#131a2a;padding:12px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.06);line-height:1.5;font-size:.9rem}
.message.user .content{background:#1a233d}
.message.ai .content p{margin-bottom:6px}
.message.ai .content ul{padding-left:20px;margin-bottom:6px}
.message.ai .content li{margin-bottom:4px}
.typing .content{color:#888;font-style:italic}