/* ============ Shared Tech UI ============ */
:root{
  --bg-0:#03060f;--bg-1:#070c1d;--bg-2:#0b1430;--bg-3:#101a3d;
  --ink:#e8f1ff;--ink-dim:#8aa0c9;--ink-mute:#5c6e93;
  --cyan:#00e5ff;--blue:#4d8dff;--violet:#9d5cff;--pink:#ff3dcb;--gold:#ffd166;--green:#39f3a6;--red:#ff5c7a;
  --stroke:rgba(120,170,255,.16);--stroke-2:rgba(120,170,255,.28);
  --glass:rgba(12,22,52,.55);--glass-2:rgba(18,32,74,.45);
  --grad-1:linear-gradient(135deg,#00e5ff 0%,#4d8dff 50%,#9d5cff 100%);
  --grad-2:linear-gradient(135deg,#9d5cff 0%,#ff3dcb 100%);
  --grad-3:linear-gradient(135deg,#39f3a6 0%,#00e5ff 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg-0);color:var(--ink);font-family:"Noto Sans SC",-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
::selection{background:var(--cyan);color:#001018}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(120,170,255,.15);border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:rgba(120,170,255,.3)}

/* Background */
.bg-layer{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg-glow{position:absolute;inset:0;background:
  radial-gradient(1200px 600px at 20% 10%,rgba(77,141,255,.22),transparent 60%),
  radial-gradient(900px 500px at 85% 30%,rgba(157,92,255,.2),transparent 60%),
  radial-gradient(1000px 700px at 50% 100%,rgba(0,229,255,.16),transparent 60%);}
.bg-grid{position:absolute;inset:-2px;
  background-image:
    linear-gradient(rgba(100,160,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(100,160,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at center,black 40%,transparent 85%);}
.bg-noise{position:absolute;inset:0;opacity:.04;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}

/* Typography */
h1,h2,h3,h4{font-family:"Noto Sans SC";font-weight:900;letter-spacing:.01em;line-height:1.15}
.grad{background:var(--grad-1);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-2{background:var(--grad-2);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-3{background:var(--grad-3);-webkit-background-clip:text;background-clip:text;color:transparent}

/* Brand */
.brand{display:flex;align-items:center;gap:14px;font-weight:700;letter-spacing:.02em}
.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--grad-1);position:relative;display:grid;place-items:center;box-shadow:0 0 20px rgba(0,229,255,.45),0 8px 28px rgba(77,141,255,.5);flex-shrink:0;animation:logo-glow 3s ease-in-out infinite alternate}
.brand-mark::before{content:"∫";font-family:"Orbitron",serif;font-size:26px;color:#02121f;font-weight:900;text-shadow:0 0 8px rgba(255,255,255,.3)}
@keyframes logo-glow{0%{box-shadow:0 0 20px rgba(0,229,255,.4),0 8px 28px rgba(77,141,255,.45)}100%{box-shadow:0 0 30px rgba(0,229,255,.6),0 8px 36px rgba(157,92,255,.5)}}
.brand-text{font-family:"Noto Sans SC";font-size:16px;line-height:1.2}
.brand-text small{display:block;font-size:10px;color:var(--ink-dim);font-weight:400;letter-spacing:.3em;text-transform:uppercase;font-family:"Orbitron";margin-top:3px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 22px;border-radius:10px;font-weight:700;font-size:13.5px;letter-spacing:.02em;transition:.25s;cursor:pointer;border:0;white-space:nowrap}
.btn-primary{background:var(--grad-1);color:#02121f;box-shadow:0 10px 30px rgba(0,229,255,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 40px rgba(0,229,255,.45)}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--ink);border:1px solid var(--stroke-2)}
.btn-ghost:hover{background:rgba(77,141,255,.12);border-color:var(--blue)}
.btn-danger{background:rgba(255,92,122,.12);color:var(--red);border:1px solid rgba(255,92,122,.3)}
.btn-danger:hover{background:rgba(255,92,122,.2)}
.btn-sm{padding:7px 14px;font-size:12px;border-radius:8px}

/* Card */
.card{position:relative;border:1px solid var(--stroke);border-radius:18px;background:var(--glass);backdrop-filter:blur(16px) saturate(140%);padding:24px;transition:.3s}
.card:hover{border-color:var(--stroke-2);box-shadow:0 20px 50px rgba(0,10,40,.4)}

/* Input */
.input,.textarea,.select{
  width:100%;padding:12px 14px;border-radius:10px;
  background:rgba(2,7,20,.55);border:1px solid var(--stroke);
  color:var(--ink);font-size:14px;font-family:inherit;transition:.2s;
}
.input:focus,.textarea:focus,.select:focus{outline:0;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,229,255,.1)}
.textarea{resize:vertical;min-height:80px;line-height:1.5}
label{display:block;font-size:12px;color:var(--ink-dim);margin-bottom:6px;letter-spacing:.06em}

/* Badge */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:11px;letter-spacing:.06em;background:rgba(0,229,255,.1);border:1px solid rgba(0,229,255,.3);color:var(--cyan);font-family:"Orbitron"}
.badge.green{background:rgba(57,243,166,.1);border-color:rgba(57,243,166,.3);color:var(--green)}
.badge.violet{background:rgba(157,92,255,.12);border-color:rgba(157,92,255,.3);color:var(--violet)}
.badge.gold{background:rgba(255,209,102,.1);border-color:rgba(255,209,102,.3);color:var(--gold)}

/* Nav */
.nav{
  position:sticky;top:16px;z-index:40;margin:16px auto;
  width:min(1320px,96vw);
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 20px;
  background:rgba(8,14,34,.7);backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--stroke);border-radius:16px;
  box-shadow:0 10px 40px rgba(0,10,40,.45),inset 0 1px 0 rgba(255,255,255,.04);
}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:8px 14px;border-radius:10px;font-size:13.5px;color:var(--ink-dim);transition:.2s;display:flex;align-items:center;gap:8px}
.nav-links a:hover,.nav-links a.active{color:var(--ink);background:rgba(77,141,255,.1)}
.nav-user{display:flex;align-items:center;gap:10px}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--grad-2);display:grid;place-items:center;font-weight:700;color:#fff;font-size:14px;flex-shrink:0}
.user-chip{display:flex;align-items:center;gap:10px;padding:4px 12px 4px 4px;border-radius:999px;background:rgba(77,141,255,.08);border:1px solid var(--stroke);transition:.2s;cursor:default}
.user-chip:hover{background:rgba(77,141,255,.14);border-color:var(--stroke-2)}
.user-info{display:flex;flex-direction:column;line-height:1.25}
.user-name{font-size:13px;font-weight:600;color:var(--ink);white-space:nowrap}
.user-title{font-size:11px;color:var(--cyan);font-weight:500;margin-left:2px}
.user-sub{font-size:10.5px;color:var(--ink-mute);letter-spacing:.04em;white-space:nowrap;max-width:160px;overflow:hidden;text-overflow:ellipsis;font-family:"JetBrains Mono",monospace}
@media(max-width:1024px){.user-info{display:none}.user-chip{padding:4px;border:0;background:transparent}}

/* Layout utils */
.wrap{width:min(1320px,96vw);margin:0 auto;position:relative;z-index:2}
.row{display:flex;align-items:center;gap:12px}
.grow{flex:1}
.between{justify-content:space-between}
.wrap-md{width:min(1100px,96vw)}
.wrap-lg{width:min(1520px,96vw)}

/* Toast */
.toast{position:fixed;bottom:32px;left:50%;transform:translateX(-50%) translateY(40px);background:rgba(8,14,34,.95);border:1px solid var(--stroke-2);padding:14px 22px;border-radius:12px;font-size:14px;z-index:200;opacity:0;transition:.35s;pointer-events:none;box-shadow:0 20px 50px rgba(0,10,40,.6);display:flex;align-items:center;gap:10px}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.success{border-color:rgba(57,243,166,.4)}
.toast.error{border-color:rgba(255,92,122,.4)}

/* Modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(2,6,18,.75);backdrop-filter:blur(8px);z-index:100;display:none;align-items:center;justify-content:center;padding:20px}
.modal-backdrop.open{display:flex}
.modal{background:var(--bg-1);border:1px solid var(--stroke-2);border-radius:18px;padding:28px;width:min(520px,100%);box-shadow:0 40px 100px rgba(0,0,0,.6)}
.modal h3{font-size:20px;margin-bottom:14px}
.modal .hint{font-size:12.5px;color:var(--ink-mute);margin-top:8px;line-height:1.7}
.modal .row-btn{display:flex;gap:10px;margin-top:20px;justify-content:flex-end}

/* Fade in animation */
.fade-up{opacity:0;transform:translateY(14px);animation:fu .6s ease forwards}
@keyframes fu{to{opacity:1;transform:translateY(0)}}

/* ============ Login Page ============ */
.login-wrap{min-height:100vh;display:grid;grid-template-columns:1fr 1fr;position:relative;z-index:2}
.login-left{padding:60px;display:flex;flex-direction:column;justify-content:space-between;border-right:1px solid var(--stroke);position:relative;overflow:hidden}
.login-left .orb-bg{position:absolute;top:20%;right:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle at 35% 30%,rgba(0,229,255,.4),rgba(77,141,255,.3) 40%,transparent 70%);filter:blur(40px);animation:orbFloat 8s ease-in-out infinite}
@keyframes orbFloat{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-20px) scale(1.05)}}
.login-left .content{position:relative;z-index:2}
.login-left h1{font-size:clamp(36px,4vw,58px);line-height:1.05;margin:30px 0 20px}
.login-left p.lead{color:var(--ink-dim);font-size:16px;max-width:460px;line-height:1.7}
.login-left .feats{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:480px;margin-top:40px}
.login-left .feat-chip{padding:14px 16px;border:1px solid var(--stroke);border-radius:12px;background:var(--glass);backdrop-filter:blur(8px)}
.login-left .feat-chip .n{font-family:"Orbitron";font-size:20px;color:var(--cyan);font-weight:700}
.login-left .feat-chip .t{font-size:12px;color:var(--ink-dim);margin-top:4px}
.login-left .foot{position:relative;z-index:2;color:var(--ink-mute);font-size:12px;letter-spacing:.2em}

.login-right{padding:60px;display:flex;align-items:center;justify-content:center}
.login-card{width:100%;max-width:440px}
.login-card .title{font-size:28px;font-weight:900;margin-bottom:8px}
.login-card .desc{color:var(--ink-dim);font-size:13px;margin-bottom:30px}
.tabs{display:grid;grid-template-columns:1fr 1fr;background:rgba(2,7,20,.55);border:1px solid var(--stroke);border-radius:12px;padding:4px;margin-bottom:28px}
.tab{padding:12px;text-align:center;border-radius:9px;cursor:pointer;font-size:13.5px;font-weight:600;color:var(--ink-dim);transition:.25s;display:flex;align-items:center;justify-content:center;gap:8px}
.tab.active{background:var(--grad-1);color:#02121f;box-shadow:0 6px 20px rgba(0,229,255,.3)}
.field{margin-bottom:18px}
.field-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.forgot{color:var(--cyan);font-size:12px;cursor:pointer}
.forgot:hover{text-decoration:underline}
.input-wrap{position:relative}
.input-wrap svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--ink-mute);pointer-events:none}
.input-wrap .input{padding-left:42px}
.remember{display:flex;align-items:center;gap:8px;color:var(--ink-dim);font-size:12.5px;cursor:pointer;user-select:none}
.remember input{accent-color:var(--cyan)}
.login-btn{width:100%;padding:14px;font-size:14px;margin-top:10px}
.demo-note{margin-top:18px;padding:12px 14px;border:1px dashed var(--stroke-2);border-radius:10px;font-size:12px;color:var(--ink-mute);line-height:1.7}
.demo-note b{color:var(--cyan)}

@media (max-width:960px){
  .login-wrap{grid-template-columns:1fr}
  .login-left{display:none}
}

/* ============ Student / Teacher Dashboard ============ */
.page{min-height:100vh;padding-bottom:80px}
.hero-sect{padding:40px 0 20px}
.hero-sect h1{font-size:clamp(26px,3vw,38px);margin-bottom:10px}
.hero-sect p{color:var(--ink-dim);font-size:14.5px}

.g-2-1{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.g-1-2{display:grid;grid-template-columns:1fr 2fr;gap:24px}
.g-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.g-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.g-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:1024px){.g-2-1,.g-1-2,.g-4,.g-3,.g-2{grid-template-columns:1fr}}

/* Stat card */
.stat-card{padding:24px;position:relative;overflow:hidden}
.stat-card .s-top{display:flex;justify-content:space-between;align-items:flex-start}
.stat-card .s-ico{width:40px;height:40px;border-radius:10px;background:rgba(0,229,255,.1);display:grid;place-items:center;color:var(--cyan);border:1px solid rgba(0,229,255,.25)}
.stat-card .trend{font-size:11px;padding:3px 8px;border-radius:6px;background:rgba(57,243,166,.12);color:var(--green);font-family:"Orbitron";font-weight:600}
.stat-card .trend.down{background:rgba(255,92,122,.12);color:var(--red)}
.stat-card .num{font-family:"Orbitron";font-size:36px;font-weight:900;margin-top:18px}
.stat-card .lbl{font-size:12.5px;color:var(--ink-dim);margin-top:4px;letter-spacing:.1em}

/* Chat */
.chat-card{padding:0;display:flex;flex-direction:column;height:640px;overflow:hidden}
.chat-head{padding:18px 22px;border-bottom:1px solid var(--stroke);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.chat-title{display:flex;align-items:center;gap:12px}
.chat-title .ai-dot{width:38px;height:38px;border-radius:10px;background:var(--grad-1);display:grid;place-items:center;font-family:"Orbitron";font-weight:900;color:#02121f;position:relative}
.chat-title .ai-dot::after{content:"";position:absolute;bottom:-2px;right:-2px;width:12px;height:12px;border-radius:50%;background:var(--green);border:2px solid var(--bg-1);box-shadow:0 0 10px var(--green)}
.chat-title .t{font-weight:700;font-size:15px}
.chat-title .t small{display:block;color:var(--ink-mute);font-size:11px;font-weight:400;letter-spacing:.1em;margin-top:2px}
.chat-actions{display:flex;gap:8px;flex-wrap:wrap}

.chat-body{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px;scroll-behavior:smooth}
.empty-chat{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--ink-mute);padding:40px 20px}
.empty-chat .big{font-family:"Orbitron";font-size:62px;background:var(--grad-1);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}
.empty-chat h3{color:var(--ink);font-size:18px;margin-bottom:8px}
.empty-chat p{font-size:13.5px;max-width:420px;margin-bottom:24px;line-height:1.7}
.sugg-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:560px;width:100%}
.sugg{padding:14px 16px;border:1px solid var(--stroke);border-radius:12px;background:var(--glass-2);text-align:left;cursor:pointer;transition:.25s;color:var(--ink)}
.sugg:hover{border-color:var(--cyan);background:rgba(0,229,255,.06);transform:translateY(-2px)}
.sugg .s-title{font-size:13.5px;font-weight:600;margin-bottom:4px}
.sugg .s-desc{font-size:12px;color:var(--ink-mute);line-height:1.5}

.msg{display:flex;gap:12px;align-items:flex-start;max-width:92%}
.msg.user{align-self:flex-end;flex-direction:row-reverse}
.msg .m-avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;flex-shrink:0}
.msg.user .m-avatar{background:var(--grad-2);color:#fff}
.msg.ai .m-avatar{background:var(--grad-1);color:#02121f;font-family:"Orbitron";box-shadow:0 0 12px rgba(0,229,255,.4)}
.msg .m-body{padding:14px 18px;border-radius:14px;font-size:14px;line-height:1.75;position:relative;word-wrap:break-word;overflow-wrap:break-word}
.msg.user .m-body{background:rgba(77,141,255,.15);border:1px solid rgba(77,141,255,.3);border-top-right-radius:4px}
.msg.ai .m-body{background:rgba(0,229,255,.06);border:1px solid rgba(0,229,255,.2);border-top-left-radius:4px;color:var(--ink)}
.msg .m-body pre{background:rgba(2,7,20,.8);padding:14px;border-radius:10px;font-family:"JetBrains Mono",monospace;font-size:12.5px;overflow-x:auto;margin:10px 0;border:1px solid var(--stroke);color:#9be8ff;white-space:pre-wrap;word-wrap:break-word}
.msg .m-body code{background:rgba(0,229,255,.1);padding:2px 6px;border-radius:4px;font-family:"JetBrains Mono",monospace;font-size:12.5px;color:#9be8ff}
.msg .m-body pre code{background:transparent;padding:0;color:#9be8ff}
.msg .m-body p{margin:0 0 8px 0}
.msg .m-body p:last-child{margin:0}
.msg .m-body ul,.msg .m-body ol{padding-left:22px;margin:8px 0}
.msg .m-body li{margin-bottom:4px}
.msg .m-body h1,.msg .m-body h2,.msg .m-body h3,.msg .m-body h4{margin:12px 0 8px 0;font-size:15px}
.msg .m-body strong{color:var(--cyan)}
.msg .m-body em{color:var(--gold);font-style:normal}
.msg .m-body a{color:var(--cyan);text-decoration:underline}
.msg .m-body blockquote{border-left:3px solid var(--cyan);padding:6px 12px;background:rgba(0,229,255,.04);margin:8px 0;color:var(--ink-dim)}
.msg .m-time{font-size:10.5px;color:var(--ink-mute);margin-top:6px;letter-spacing:.08em;font-family:"JetBrains Mono"}

.typing{display:inline-flex;gap:4px;padding:12px 18px;background:rgba(0,229,255,.06);border:1px solid rgba(0,229,255,.2);border-radius:14px;border-top-left-radius:4px}
.typing span{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:bounce 1.4s ease infinite}
.typing span:nth-child(2){animation-delay:.2s}
.typing span:nth-child(3){animation-delay:.4s}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}

.chat-foot{padding:14px 16px;border-top:1px solid var(--stroke);background:rgba(2,7,20,.3)}
.input-bar{display:flex;gap:10px;align-items:flex-end;background:rgba(2,7,20,.55);border:1px solid var(--stroke);border-radius:14px;padding:10px;transition:.2s}
.input-bar:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(0,229,255,.08)}
.input-bar textarea{flex:1;background:transparent;border:0;outline:0;color:var(--ink);font-family:inherit;font-size:14px;resize:none;max-height:160px;min-height:24px;padding:6px 8px;line-height:1.5}
.send-btn{width:40px;height:40px;border-radius:10px;background:var(--grad-1);color:#02121f;display:grid;place-items:center;border:0;cursor:pointer;flex-shrink:0;transition:.2s}
.send-btn:hover:not(:disabled){transform:scale(1.05);box-shadow:0 6px 20px rgba(0,229,255,.4)}
.send-btn:disabled{opacity:.4;cursor:not-allowed}
.send-btn.stop-mode{background:var(--red);animation:pulse-stop 1.5s ease-in-out infinite}
.send-btn.stop-mode:hover{box-shadow:0 6px 20px rgba(255,92,122,.5);transform:scale(1.05)}
@keyframes pulse-stop{0%,100%{opacity:1}50%{opacity:.75}}
.chat-hint{font-size:11px;color:var(--ink-mute);margin-top:8px;padding:0 6px;display:flex;justify-content:space-between;align-items:center}

/* Quick action */
.q-list{display:flex;flex-direction:column;gap:10px}
.q-item{padding:14px;background:var(--glass-2);border:1px solid var(--stroke);border-radius:12px;transition:.2s;cursor:pointer}
.q-item:hover{border-color:var(--cyan);transform:translateX(4px)}
.q-item .q-title{font-size:13.5px;font-weight:600;margin-bottom:4px;display:flex;align-items:center;gap:8px}
.q-item .q-title .ic{width:24px;height:24px;border-radius:6px;background:rgba(0,229,255,.1);display:grid;place-items:center;color:var(--cyan)}
.q-item .q-desc{font-size:12px;color:var(--ink-mute)}

/* Progress */
.prog{height:6px;background:rgba(120,170,255,.1);border-radius:999px;overflow:hidden}
.prog span{display:block;height:100%;background:var(--grad-1);border-radius:999px;transition:width .6s}

/* Section head */
.sect-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:16px;flex-wrap:wrap;gap:10px}
.sect-head h3{font-size:18px}
.sect-head small{color:var(--ink-mute);font-size:12px;margin-left:8px;font-weight:400}

/* Resource card */
.res{padding:20px;display:flex;flex-direction:column;gap:12px;cursor:pointer}
.res-ico{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;font-family:"Orbitron";font-weight:900;color:#02121f;font-size:16px}
.res h4{font-size:15px}
.res p{font-size:12.5px;color:var(--ink-dim);flex:1}
.res .foot{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-size:11px;color:var(--ink-mute);font-family:"JetBrains Mono";letter-spacing:.08em}

/* Teacher table */
.table{width:100%;border-collapse:separate;border-spacing:0}
.table th,.table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--stroke);font-size:13px}
.table th{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-mute);font-weight:500;font-family:"Orbitron"}
.table tr:hover td{background:rgba(77,141,255,.04)}
.score-bar{width:100%;height:5px;background:rgba(120,170,255,.1);border-radius:999px;overflow:hidden}
.score-bar span{display:block;height:100%;background:var(--grad-1);border-radius:999px}
.score-bar.warn span{background:linear-gradient(90deg,#ffd166,#ff3dcb)}
.score-bar.low span{background:linear-gradient(90deg,#ff5c7a,#9d5cff)}

/* Chart-like sparkline */
.spark{height:80px;display:flex;align-items:flex-end;gap:4px}
.spark div{flex:1;background:var(--grad-1);border-radius:3px 3px 0 0;opacity:.7}
.spark div:hover{opacity:1}

/* Knowledge chip */
.kg-chips{display:flex;flex-wrap:wrap;gap:8px}
.kg-chip{padding:6px 12px;border-radius:999px;background:rgba(77,141,255,.1);border:1px solid rgba(77,141,255,.3);font-size:12px;color:var(--ink);cursor:pointer;transition:.2s}
.kg-chip:hover{background:rgba(0,229,255,.15);border-color:var(--cyan)}
.kg-chip.weak{background:rgba(255,92,122,.1);border-color:rgba(255,92,122,.3);color:var(--red)}
.kg-chip.strong{background:rgba(57,243,166,.1);border-color:rgba(57,243,166,.3);color:var(--green)}

/* Cursor blink for streaming */
.cursor{display:inline-block;width:8px;height:16px;background:var(--cyan);animation:blink 1s step-start infinite;vertical-align:middle;margin-left:2px}
.math-pending{color:var(--ink-mute);font-family:'JetBrains Mono',monospace;font-size:.88em}
@keyframes blink{50%{opacity:0}}

/* KaTeX dark theme adaptation */
.msg .m-body .katex{color:var(--ink);font-size:1.05em;line-height:1.35}
.msg .m-body .katex-display{margin:14px 0;padding:14px 10px;overflow-x:auto;overflow-y:hidden;background:rgba(2,7,20,.4);border:1px solid rgba(0,229,255,.15);border-radius:10px}
.msg .m-body .katex-display::-webkit-scrollbar{height:6px}
.msg .m-body .katex-display::-webkit-scrollbar-thumb{background:rgba(120,170,255,.25);border-radius:3px}
.msg .m-body .katex-html{color:var(--ink)}
.msg .m-body .katex .mord,.msg .m-body .katex .mop,.msg .m-body .katex .mbin,.msg .m-body .katex .mrel,.msg .m-body .katex .mopen,.msg .m-body .katex .mclose,.msg .m-body .katex .mpunct,.msg .m-body .katex .minner{color:inherit}
.msg .m-body .katex .mfrac .frac-line{border-color:var(--ink)}
.msg .m-body .katex .sqrt > .root,.msg .m-body .katex .sqrt > .hide-tail{border-color:var(--ink)}
.msg .m-body .katex .overline .overline-line,.msg .m-body .katex .underline .underline-line{border-color:var(--ink)}
.msg .m-body .katex .accent-body,.msg .m-body .katex .accent{color:var(--cyan)}
.msg .m-body .katex-error{color:var(--red) !important;background:rgba(255,92,122,.1);padding:1px 4px;border-radius:3px}

/* Markdown 小节标题 */
.msg .m-body .md-sec{margin:18px 0 10px 0}
.msg .m-body .md-sec-h{display:flex;align-items:center;gap:12px;font-size:16px;font-weight:700;color:var(--ink);padding:10px 14px;background:linear-gradient(90deg,rgba(0,229,255,.12),rgba(157,92,255,.05) 60%,transparent);border-left:3px solid var(--cyan);border-radius:0 10px 10px 0;margin:0}
.msg .m-body .md-sec-n{font-family:"Orbitron",monospace;font-size:13px;font-weight:900;min-width:26px;height:26px;padding:0 8px;border-radius:7px;background:var(--grad-1);color:#02121f;display:inline-flex;align-items:center;justify-content:center;letter-spacing:0}

/* Markdown 分隔线 */
.msg .m-body hr.md-hr{border:0;height:1px;background:linear-gradient(90deg,transparent,rgba(120,170,255,.4),transparent);margin:20px 0}

/* Markdown 表格 */
.msg .m-body .md-table-wrap{margin:12px 0;overflow-x:auto;border:1px solid var(--stroke);border-radius:10px;background:rgba(2,7,20,.4)}
.msg .m-body .md-table{width:100%;border-collapse:collapse;font-size:13.5px}
.msg .m-body .md-table th,.msg .m-body .md-table td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--stroke);vertical-align:top}
.msg .m-body .md-table thead th{background:rgba(0,229,255,.08);color:var(--cyan);font-weight:700;font-size:12.5px;letter-spacing:.04em;border-bottom:1px solid rgba(0,229,255,.2)}
.msg .m-body .md-table tbody tr:last-child td{border-bottom:0}
.msg .m-body .md-table tbody tr:hover td{background:rgba(77,141,255,.06)}

/* 回到底部浮动按钮 */
.chat-card .jump-bottom{position:absolute;right:20px;bottom:calc(78px + 12px);width:40px;height:40px;border-radius:50%;background:rgba(8,14,34,.9);border:1px solid var(--stroke-2);backdrop-filter:blur(10px);color:var(--cyan);display:grid;place-items:center;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s;z-index:5;box-shadow:0 10px 30px rgba(0,10,40,.5)}
.chat-card .jump-bottom.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.chat-card .jump-bottom:hover{background:var(--grad-1);color:#02121f;border-color:transparent;transform:translateY(-2px);box-shadow:0 14px 40px rgba(0,229,255,.4)}

/* Settings modal extras */
.setting-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--stroke)}
.setting-row:last-child{border:0}
.setting-row .l{font-size:13.5px}
.setting-row .l small{display:block;color:var(--ink-mute);font-size:11.5px;margin-top:2px}
.switch{position:relative;width:44px;height:24px;background:rgba(120,170,255,.15);border-radius:999px;cursor:pointer;transition:.2s}
.switch.on{background:var(--grad-1)}
.switch::after{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;transition:.2s}
.switch.on::after{left:22px}