/* ============ SHARED NAV ============ */
#site-nav{
  position: fixed; top:0; left:0; right:0;
  z-index: 500;
  display:flex; align-items:center; justify-content:space-between;
  padding: 14px 4vw;
  background: rgba(5,7,13,.72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.nav-brand{ font-size:14px; font-weight:700; letter-spacing:.14em; color:var(--ink); }
.nav-brand span{ color: var(--accent); }
.nav-links{ display:flex; align-items:center; gap:22px; }
.nav-link{
  font-size:12px; letter-spacing:.1em; text-transform:uppercase;
  color: var(--muted);
  transition: color .2s ease;
}
.nav-link:hover, .nav-link.on{ color: var(--accent); }
.nav-login{
  border:1px solid rgba(41,255,198,.45);
  padding:6px 14px; border-radius:999px;
}
.nav-user{ font-size:12px; color: var(--accent); }
@media (max-width:560px){ .nav-links{ gap:12px; } .nav-link{ font-size:10.5px; } }

/* ============ LAB PAGE LAYOUT ============ */
.lab-main{
  position:relative; z-index:2;
  max-width: 1160px;
  margin: 0 auto;
  padding: 130px 4vw 90px;
}
.lab-head h1{
  font-size: clamp(30px, 4.6vw, 52px);
  letter-spacing:-.02em;
}
.lab-head h1 span{ color: var(--accent); }
.lab-head .lab-sub{ margin-top:12px; color: var(--muted); max-width:720px; line-height:1.6; }
#lab-stats{ margin-top:22px; display:flex; gap:12px; flex-wrap:wrap; }
.chip{
  font-size:12px; color: var(--muted);
  border:1px solid var(--line);
  padding:7px 14px; border-radius:999px;
  background: rgba(10,16,24,.5);
}
.chip b, .chip a{ color: var(--accent); }

.lab-sec-title{
  margin: 54px 0 20px;
  font-size:13px; letter-spacing:.2em; text-transform:uppercase;
  color: var(--accent);
  display:flex; align-items:center; gap:12px;
}
.lab-sec-title::after{ content:''; flex:1; height:1px; background: var(--line); }

/* ============ TICKET QUEUE ============ */
#queue{ display:grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap:18px; }
.ticket-card{
  border:1px solid var(--line);
  border-radius:16px;
  padding:20px;
  background: linear-gradient(160deg, rgba(255,255,255,.03), transparent);
  transition: border-color .25s ease, transform .25s ease;
}
.ticket-card:hover{ border-color: rgba(41,255,198,.5); transform: translateY(-3px); }
.ticket-card.done{ border-color: rgba(41,255,198,.35); background: linear-gradient(160deg, rgba(41,255,198,.05), transparent); }
.tk-top{ display:flex; align-items:center; gap:10px; margin-bottom:12px; }
.sev{
  font-size:10px; font-weight:700; letter-spacing:.1em;
  padding:3px 8px; border-radius:6px;
}
.sev-p1{ background: rgba(255,93,108,.18); color: var(--danger); border:1px solid rgba(255,93,108,.4); }
.sev-p2{ background: rgba(255,198,92,.14); color: var(--amber); border:1px solid rgba(255,198,92,.35); }
.sev-p3{ background: rgba(76,141,255,.14); color: var(--accent-2); border:1px solid rgba(76,141,255,.35); }
.sev-lab{ background: rgba(41,255,198,.12); color: var(--accent); border:1px solid rgba(41,255,198,.35); }

/* training-lab objectives checklist */
.obj{
  display:flex; align-items:flex-start; gap:9px;
  font-size:12px; line-height:1.5;
  color: var(--muted);
  padding:7px 10px;
  border:1px solid var(--line);
  border-radius:9px;
  margin-bottom:7px;
  transition: border-color .3s ease, color .3s ease, background .3s ease;
}
.obj .obj-ic::before{ content:'○'; color: var(--muted); }
.obj.done{
  color: var(--ink);
  border-color: rgba(41,255,198,.45);
  background: rgba(41,255,198,.05);
}
.obj.done .obj-ic::before{ content:'✔'; color: var(--accent); }
.tk-id{ font-size:11px; color: var(--muted); letter-spacing:.06em; }
.tk-state{ margin-left:auto; font-size:10px; letter-spacing:.12em; color: var(--muted); }
.tk-state.ok{ color: var(--accent); }
.ticket-card h3{ font-size:16px; line-height:1.35; margin-bottom:8px; }
.tk-open{ font-size:11px; color: var(--muted); line-height:1.5; margin-bottom:16px; }
.btn-sm{
  font-family: var(--sans);
  font-size:13px; font-weight:600;
  padding: 9px 18px; border-radius:999px;
  background: var(--accent); color:#03110c;
  border:none; cursor:none;
  transition: transform .25s ease, box-shadow .25s ease;
}
.btn-sm:hover{ transform: translateY(-2px); box-shadow: 0 8px 22px -8px rgba(41,255,198,.5); }
.btn-sm.ghost{ background:transparent; color:var(--ink); border:1px solid var(--line); }
@media (hover:none){ .btn-sm{ cursor:pointer; } }

/* ============ WORKBENCH ============ */
#workbench{ display:none; margin-top:26px; }
#workbench.open{
  display:block;
  border:1px solid rgba(41,255,198,.35);
  border-radius:20px;
  background: rgba(7,11,18,.92);
  padding: 26px;
  box-shadow: 0 40px 90px -40px rgba(0,0,0,.9);
  animation: wbIn .45s cubic-bezier(.2,.8,.2,1);
}
@keyframes wbIn{ from{ opacity:0; transform: translateY(24px);} to{ opacity:1; transform:none;} }
.wb-head{ display:flex; justify-content:space-between; align-items:flex-start; gap:16px; margin-bottom:20px; }
.wb-head h3{ font-size:19px; margin-top:8px; }
.wb-head-r{ display:flex; align-items:center; gap:14px; }
.wb-timer{ color: var(--amber); font-size:15px; font-weight:700; }
.wb-grid{ display:grid; grid-template-columns: minmax(280px, 1fr) minmax(320px, 1.2fr); gap:22px; }
@media (max-width:900px){ .wb-grid{ grid-template-columns: 1fr; } }

.wb-label{
  font-size:10px; letter-spacing:.2em; color: var(--accent);
  margin: 18px 0 6px;
}
.wb-label:first-child{ margin-top:0; }
.wb-desc{ color: var(--muted); font-size:14px; line-height:1.65; }
.wb-ci{ font-size:12px; color: var(--ink); }
.dim{ color: var(--muted); opacity:.75; }
.ok{ color: var(--accent); }
.err{ color: var(--danger); }

.hint-btn{
  display:block; width:100%;
  text-align:left;
  background: rgba(255,198,92,.07);
  border:1px dashed rgba(255,198,92,.4);
  color: var(--amber);
  font-size:11px; letter-spacing:.06em;
  padding:9px 13px; border-radius:9px;
  margin-bottom:8px; cursor:none;
}
@media (hover:none){ .hint-btn{ cursor:pointer; } }
.hint-btn:hover{ background: rgba(255,198,92,.14); }
.hint-text{
  font-size:13px; color: var(--ink);
  background: rgba(255,198,92,.06);
  border-left:2px solid var(--amber);
  padding:10px 13px; margin: 0 0 10px;
  line-height:1.55;
}
/* ============ TICKET PANEL TABS ============ */
.wb-tabs{
  display:flex; gap:4px;
  border-bottom:1px solid var(--line);
  margin-bottom:18px;
}
.wb-tab{
  background:transparent;
  border:none;
  border-bottom:2px solid transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size:11px; letter-spacing:.14em;
  padding:10px 14px;
  cursor:none;
  display:flex; align-items:center; gap:7px;
  transition: color .2s ease, border-color .2s ease;
}
@media (hover:none){ .wb-tab{ cursor:pointer; } }
.wb-tab:hover{ color: var(--ink); }
.wb-tab.on{ color: var(--accent); border-bottom-color: var(--accent); }
.tab-badge{
  background: rgba(41,255,198,.14);
  border:1px solid rgba(41,255,198,.35);
  color: var(--accent);
  font-size:9px; font-weight:700;
  min-width:16px; height:16px;
  border-radius:999px;
  display:inline-flex; align-items:center; justify-content:center;
  padding:0 4px;
}
.wb-tab:not(.on) .tab-badge{ opacity:.6; }
.wb-pane{ display:none; }
.wb-pane.on{ display:block; animation: paneIn .25s ease; }
@keyframes paneIn{ from{ opacity:0; transform:translateY(6px);} to{ opacity:1; transform:none;} }
.pane-note{ font-size:12.5px; margin-bottom:14px; color: var(--muted); }

/* ============ CALLER CHAT ============ */
.chat-head{
  display:flex; align-items:center; gap:12px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
  margin-bottom:14px;
}
.chat-avatar{
  width:38px; height:38px;
  border-radius:50%;
  background: linear-gradient(160deg, rgba(76,141,255,.25), rgba(76,141,255,.08));
  border:1px solid rgba(76,141,255,.5);
  color: var(--accent-2);
  font-size:13px; font-weight:700;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}
.chat-who{ display:flex; flex-direction:column; gap:2px; }
.chat-who b{ font-size:14px; }
.chat-status{ font-size:10px; color: var(--accent); letter-spacing:.08em; }
.chat-msgs{
  display:flex; flex-direction:column; gap:10px;
  max-height: 300px;
  overflow-y:auto;
  padding: 4px 2px 14px;
}
.msg{
  max-width: 85%;
  padding: 10px 14px;
  font-size:13px; line-height:1.55;
  border-radius: 14px;
}
.msg.them{
  align-self:flex-start;
  background: rgba(76,141,255,.1);
  border:1px solid rgba(76,141,255,.25);
  border-bottom-left-radius:4px;
  color: var(--ink);
}
.msg.me{
  align-self:flex-end;
  background: rgba(41,255,198,.1);
  border:1px solid rgba(41,255,198,.3);
  border-bottom-right-radius:4px;
  color: var(--ink);
}
.msg.typing{
  display:flex; gap:5px; align-items:center;
  padding: 13px 16px;
}
.msg.typing span{
  width:6px; height:6px;
  border-radius:50%;
  background: var(--accent-2);
  animation: typingDot 1.2s ease-in-out infinite;
}
.msg.typing span:nth-child(2){ animation-delay:.15s; }
.msg.typing span:nth-child(3){ animation-delay:.3s; }
@keyframes typingDot{ 0%,60%,100%{ opacity:.25; transform:translateY(0);} 30%{ opacity:1; transform:translateY(-4px);} }
.chat-suggest-label{
  font-size:10px; letter-spacing:.18em;
  color: var(--accent-2);
  margin: 4px 0 10px;
  padding-top:12px;
  border-top:1px dashed var(--line);
}
#chat-suggest{ display:flex; flex-direction:column; gap:8px; }
.chat-chip{
  text-align:left;
  background: transparent;
  border:1px solid rgba(76,141,255,.35);
  color: var(--ink);
  font-size:12px; line-height:1.4;
  padding:10px 14px;
  border-radius:12px;
  cursor:none;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
@media (hover:none){ .chat-chip{ cursor:pointer; } }
.chat-chip:hover{
  background: rgba(76,141,255,.12);
  border-color: var(--accent-2);
  transform: translateX(4px);
}
.chat-chip::before{ content:'→ '; color: var(--accent-2); }

#rz-rc{
  width:100%;
  background:#04070c;
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--ink);
  font-size:13px;
  padding:12px;
  resize:vertical;
  outline:none;
}
#rz-rc:focus{ border-color: var(--accent); }
#rz-assign{
  width:100%;
  background:#04070c;
  border:1px solid var(--line);
  border-radius:10px;
  color: var(--ink);
  font-size:13px;
  padding:12px;
  outline:none;
  cursor:none;
}
@media (hover:none){ #rz-assign{ cursor:pointer; } }
#rz-assign:focus{ border-color: var(--accent); }
#rz-assign option{ background:#0a1018; }

.resolve-btn{ margin-top:24px; border:none; font-family:var(--sans); cursor:none; }
@media (hover:none){ .resolve-btn{ cursor:pointer; } }
.locked-note{ margin-top:24px; font-size:12px; color: var(--muted); }
.locked-note a{ color: var(--accent); }
.solved-note{
  margin-top:18px; padding:14px;
  border:1px solid rgba(41,255,198,.3); border-radius:12px;
  background: rgba(41,255,198,.05);
}
.solved-note p{ font-size:12px; }

/* terminal (workbench variant) */
.wb-term{
  border:1px solid var(--line);
  border-radius:14px;
  background:#04070c;
  display:flex; flex-direction:column;
  min-height: 420px;
  overflow:hidden;
}
.term-out{
  flex:1;
  padding:16px;
  font-size:12px; line-height:1.7;
  color:#9fd8c8;
  overflow-y:auto;
  max-height: 430px;
  white-space:pre-wrap;
  word-break:break-word;
}
.term-out .err{ color: var(--danger); }
.term-out .ok{ color: var(--accent); }
.term-out .dim{ color: var(--muted); }
.term-in{
  display:flex; align-items:center; gap:8px;
  border-top:1px solid var(--line);
  padding:10px 14px;
}
#term-prompt{ font-size:12px; color: var(--accent); white-space:nowrap; }
#term-input{
  flex:1;
  background:transparent; border:none; outline:none;
  color: var(--ink);
  font-size:13px;
  caret-color: var(--accent);
}

/* resolve panel */
#resolve-panel{
  margin-top:24px;
  border-top:1px dashed var(--line);
  padding-top:22px;
}
#resolve-panel h3{ font-size:14px; letter-spacing:.14em; color: var(--accent); margin-bottom:6px; }
.opt{
  display:flex; gap:10px; align-items:flex-start;
  border:1px solid var(--line);
  border-radius:10px;
  padding:11px 13px;
  margin-bottom:8px;
  font-size:13.5px; line-height:1.5;
  color: var(--muted);
  cursor:none;
  transition: border-color .2s ease, background .2s ease;
}
@media (hover:none){ .opt{ cursor:pointer; } }
.opt:hover{ border-color: rgba(41,255,198,.5); }
.opt:has(input:checked){ border-color: var(--accent); background: rgba(41,255,198,.06); color: var(--ink); }
.opt input{ accent-color: var(--accent); margin-top:3px; }
#rz-notes{
  width:100%;
  background:#04070c;
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--ink);
  font-size:13px;
  padding:12px;
  resize:vertical;
  outline:none;
}
#rz-notes:focus{ border-color: var(--accent); }
.rz-actions{ margin-top:16px; display:flex; align-items:center; gap:16px; flex-wrap:wrap; }
.rz-actions .btn{ border:none; font-family:var(--sans); cursor:none; }
@media (hover:none){ .rz-actions .btn{ cursor:pointer; } }
#rz-msg{ font-size:12px; }
.solve-banner{
  border:1px solid rgba(41,255,198,.45);
  background: rgba(41,255,198,.07);
  border-radius:14px;
  padding:20px;
  margin-bottom:18px;
}
.solve-banner h3{ color: var(--accent) !important; letter-spacing:.1em; }
.solve-banner p{ margin-top:6px; font-size:12px; }

/* ============ WORKBENCH TOPOLOGY DIAGRAM ============ */
#wb-topo-wrap{ margin-bottom: 24px; }
.wb-topo-bar{
  display:flex; align-items:center; justify-content:space-between;
  gap:14px; flex-wrap:wrap; margin-bottom:10px;
}
.ping-btn{
  background: rgba(41,255,198,.1);
  border:1px solid rgba(41,255,198,.45);
  color: var(--accent);
  font-size:11px; letter-spacing:.06em;
  padding:8px 16px; border-radius:999px;
  cursor:none;
  transition: background .2s ease, box-shadow .2s ease;
}
@media (hover:none){ .ping-btn{ cursor:pointer; } }
.ping-btn:hover{ background: rgba(41,255,198,.2); box-shadow: 0 0 18px -4px rgba(41,255,198,.5); }
#wb-topo{
  position:relative;
  height: 320px;
  border:1px solid var(--line);
  border-radius:14px;
  background:
    linear-gradient(rgba(130,190,220,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130,190,220,.05) 1px, transparent 1px),
    #04070c;
  background-size: 34px 34px, 34px 34px, auto;
  overflow:hidden;
}
#wb-topo-svg{ position:absolute; inset:0; width:100%; height:100%; overflow:visible; }
.t-link{ stroke-width:1.6; animation: dashFlow 1.4s linear infinite; }
.tl-ok{ stroke: rgba(41,255,198,.55); }
.tl-warn{ stroke: rgba(255,198,92,.75); }
.tl-down{ stroke: rgba(255,93,108,.85); animation: dashFlow 1.4s linear infinite, linkBlink 1.2s ease-in-out infinite; }
.tl-off{ stroke: rgba(130,150,170,.35); animation:none; stroke-dasharray:2 6; }
@keyframes linkBlink{ 50%{ opacity:.35; } }
.tl-label{
  fill: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing:.08em;
  text-anchor: middle;
}
.tnode{
  position:absolute;
  width:64px; margin-left:-32px; margin-top:-24px;
  text-align:center;
  z-index:5;
  touch-action:none;
  cursor:none;
}
@media (hover:none){ .tnode{ cursor:grab; } }
.tnode-box{
  width:48px; height:48px;
  margin:0 auto;
  border-radius:13px;
  background: linear-gradient(160deg, rgba(20,32,44,.95), rgba(8,14,22,.95));
  border:1px solid rgba(41,255,198,.4);
  display:flex; align-items:center; justify-content:center;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.tnode:hover .tnode-box{ border-color: var(--accent); box-shadow: 0 0 18px -4px rgba(41,255,198,.55); }
.tnode-box svg{ width:26px; height:26px; overflow:visible; }
.tic{ fill:none; stroke: var(--accent); stroke-width:3.2; stroke-linecap:round; stroke-linejoin:round; }
.tic.thin{ stroke-width:2.4; opacity:.85; }
.tnode.t-broken .tnode-box{ border-color: var(--danger); animation: brokenPulse 1.6s ease-in-out infinite; }
.tnode.t-broken .tic{ stroke: var(--danger); }
@keyframes brokenPulse{ 50%{ box-shadow: 0 0 20px -2px rgba(255,93,108,.7); } }
.tnode-tag{
  display:inline-block;
  margin-top:5px;
  font-size:8.5px; letter-spacing:.1em;
  color: var(--muted);
  background: rgba(6,12,18,.8);
  border:1px solid var(--line);
  padding:2px 7px; border-radius:999px;
  white-space:nowrap;
}
.tfx-good{ fill:none; stroke: var(--accent); stroke-width:2; }
.tfx-bad{ fill:none; stroke: var(--danger); stroke-width:2; }
.tfx-pkt{ fill: var(--accent); }
/* node identity — docked device panel below the diagram */
#node-info{
  display:flex; align-items:center; gap:20px;
  flex-wrap:wrap;
  margin-top:10px;
  padding: 12px 16px;
  background: rgba(8,14,20,.85);
  border:1px solid rgba(41,255,198,.35);
  border-radius:12px;
  animation: niIn .25s cubic-bezier(.2,.8,.2,1);
}
#node-info[hidden]{ display:none; }
@keyframes niIn{ from{ opacity:0; transform: translateY(-6px);} to{ opacity:1; transform:none;} }
.ni-id{
  display:flex; align-items:center; gap:12px;
  flex-shrink:0;
  padding-right:18px;
  border-right:1px solid var(--line);
}
.ni-icon{
  width:38px; height:38px;
  border-radius:10px;
  background: rgba(41,255,198,.08);
  border:1px solid rgba(41,255,198,.35);
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}
.ni-icon svg{ width:22px; height:22px; }
.ni-name{ display:flex; flex-direction:column; gap:2px; }
.ni-name b{ font-size:13.5px; letter-spacing:.02em; }
.ni-name span{ font-size:9.5px; letter-spacing:.12em; }
.ni-name .ok{ color: var(--accent); }
.ni-name .err{ color: var(--danger); }
.ni-kvs{
  display:flex; align-items:center; gap:22px;
  flex-wrap:wrap;
  flex:1;
  min-width:0;
}
.ni-kv{ display:flex; flex-direction:column; gap:2px; min-width:0; }
.ni-kv span{ font-size:9px; letter-spacing:.16em; color: var(--muted); }
.ni-kv b{ font-size:12px; color: var(--ink); font-weight:500; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:280px; }
.ni-actions{ display:flex; align-items:center; gap:10px; flex-shrink:0; margin-left:auto; }
.ni-connect{
  background: rgba(41,255,198,.1);
  border:1px solid rgba(41,255,198,.45);
  color: var(--accent);
  font-size:10.5px; letter-spacing:.08em;
  padding:8px 16px; border-radius:999px;
  cursor:none;
  transition: background .2s ease;
  white-space:nowrap;
}
@media (hover:none){ .ni-connect{ cursor:pointer; } }
.ni-connect:hover{ background: rgba(41,255,198,.2); }
.ni-close{
  background:transparent; border:none;
  color: var(--muted); font-size:12px;
  cursor:none; padding:4px 6px;
}
@media (hover:none){ .ni-close{ cursor:pointer; } }
.ni-close:hover{ color: var(--ink); }
@media (max-width:640px){
  .ni-id{ border-right:none; padding-right:0; }
  .ni-kvs{ gap:14px; }
}
.tnode.sel .tnode-box{
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(41,255,198,.25), 0 0 22px -4px rgba(41,255,198,.6);
}

#topo-console{
  margin-top:10px;
  font-size:11.5px;
  color: var(--muted);
  letter-spacing:.04em;
  min-height:16px;
}
#topo-console .ok{ color: var(--accent); }
#topo-console .err{ color: var(--danger); }
#topo-console .warn-t{ color: var(--amber); }
#topo-console b{ color: var(--ink); }

/* ============ CCNA TRACK — PHASES + DRILL ============ */
.track-note{ font-size:12px; margin:-8px 0 20px; color: var(--muted); letter-spacing:.03em; }
#phases{ display:grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap:18px; }
.phase-card{
  border:1px solid var(--line);
  border-radius:16px;
  padding:20px;
  background: linear-gradient(160deg, rgba(255,255,255,.03), transparent);
  transition: border-color .25s ease, transform .25s ease;
}
.phase-card:not(.locked):hover{ border-color: rgba(41,255,198,.5); transform: translateY(-3px); }
.phase-card.locked{ opacity:.45; }
.phase-card.complete{ border-color: rgba(41,255,198,.4); background: linear-gradient(160deg, rgba(41,255,198,.05), transparent); }
.phase-card h3{ font-size:17px; margin-bottom:6px; }
.phase-course{ font-size:10px; letter-spacing:.1em; color: var(--accent-2); text-transform:uppercase; margin-bottom:14px; }
.phase-locked{ font-size:11px; color: var(--muted); }
.phase-bar{
  height:5px; border-radius:999px;
  background: rgba(130,190,220,.12);
  overflow:hidden;
  margin-bottom:8px;
}
.phase-bar-fill{
  height:100%;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  border-radius:999px;
  transition: width .4s cubic-bezier(.2,.8,.2,1);
}
.phase-progress{ font-size:11px; color: var(--muted); margin-bottom:14px; }

#drill{ display:none; margin-top:24px; }
#drill.open{
  display:block;
  border:1px solid rgba(41,255,198,.35);
  border-radius:20px;
  background: rgba(7,11,18,.92);
  padding:28px;
  box-shadow: 0 40px 90px -40px rgba(0,0,0,.9);
  animation: wbIn .45s cubic-bezier(.2,.8,.2,1);
}
.drill-head{
  display:flex; justify-content:space-between; align-items:flex-start;
  gap:16px; margin-bottom:22px;
}
.drill-head .tk-id{ display:block; margin-bottom:10px; }
.drill-bar{ width:220px; max-width:50vw; }
.drill-head-r{ display:flex; align-items:center; gap:14px; font-size:13px; color: var(--accent); }
.drill-topic{
  display:inline-block;
  font-size:10px; letter-spacing:.18em;
  color: var(--accent-2);
  border:1px solid rgba(76,141,255,.4);
  padding:4px 12px; border-radius:999px;
  margin-bottom:14px;
}
.drill-q{ font-size: clamp(17px, 2.2vw, 21px); line-height:1.5; margin-bottom:20px; max-width:760px; }
.drill-input{
  width:100%; max-width:480px;
  background:#04070c;
  border:1px solid var(--line);
  border-radius:12px;
  color: var(--ink);
  font-size:15px;
  padding:14px 16px;
  outline:none;
  transition: border-color .2s ease;
}
.drill-input:focus{ border-color: var(--accent); }
.drill-cli{
  display:flex; align-items:center; gap:8px;
  max-width:560px;
  background:#04070c;
  border:1px solid var(--line);
  border-radius:12px;
  padding:14px 16px;
  font-size:14px;
}
.drill-cli input{
  flex:1;
  background:transparent; border:none; outline:none;
  color: var(--ink);
  font-family: var(--mono);
  font-size:14px;
  caret-color: var(--accent);
}
#drill-explain{
  margin-top:22px;
  border-top:1px dashed var(--line);
  padding-top:18px;
}
.drill-review{
  margin: 6px 0 18px;
  display:grid; gap:6px;
}
.drill-review-row{ font-size:12px; color: var(--muted); }
.drill-review-row .ok, .drill-review-row .err{ margin-right:6px; }

/* ============ CASE LOG ============ */
#case-log{ display:grid; gap:18px; }
.case-card{
  border:1px solid var(--line);
  border-radius:16px;
  padding:24px;
  background: linear-gradient(160deg, rgba(41,255,198,.04), transparent);
}
.case-card h3{ font-size:17px; margin:4px 0 12px; }
.case-meta{
  display:flex; gap:18px; flex-wrap:wrap;
  font-size:11px; color: var(--muted);
  margin-bottom:6px;
}
.case-txt{ color: var(--muted); font-size:13.5px; line-height:1.6; }
.case-txt.notes{ color: var(--ink); font-style:italic; }
.empty-log{ padding: 30px 0; font-size:13px; }
.log-actions{ margin-top:20px; display:flex; gap:12px; }
.log-actions button{
  font-family: var(--mono); font-size:11px; letter-spacing:.08em;
  background:transparent; color: var(--muted);
  border:1px solid var(--line); border-radius:999px;
  padding:8px 16px; cursor:none;
  transition: color .2s ease, border-color .2s ease;
}
@media (hover:none){ .log-actions button{ cursor:pointer; } }
.log-actions button:hover{ color: var(--accent); border-color: rgba(41,255,198,.5); }

/* ============ LOGIN PAGE ============ */
.login-wrap{
  position:relative; z-index:2;
  min-height:100vh;
  display:flex; align-items:center; justify-content:center;
  padding: 100px 5vw 60px;
}
.login-card{
  width: 100%; max-width: 420px;
  border:1px solid var(--line);
  border-radius:20px;
  background: rgba(7,11,18,.92);
  padding: 36px;
  box-shadow: 0 40px 90px -40px rgba(0,0,0,.9);
}
.login-card h1{ font-size:22px; letter-spacing:.02em; margin-bottom:6px; }
.login-card .mono.dim{ font-size:12px; margin-bottom:26px; display:block; }
.login-field{ margin-bottom:16px; }
.login-field label{
  display:block;
  font-family: var(--mono);
  font-size:10px; letter-spacing:.2em; text-transform:uppercase;
  color: var(--accent);
  margin-bottom:7px;
}
.login-field input{
  width:100%;
  background:#04070c;
  border:1px solid var(--line);
  border-radius:10px;
  padding:13px 14px;
  color: var(--ink);
  font-family: var(--mono);
  font-size:14px;
  outline:none;
  transition: border-color .2s ease;
}
.login-field input:focus{ border-color: var(--accent); }
.login-card .btn{ width:100%; text-align:center; border:none; font-family:var(--sans); font-size:15px; margin-top:8px; cursor:none; }
@media (hover:none){ .login-card .btn{ cursor:pointer; } }
#login-msg{ display:block; margin-top:14px; font-size:12px; min-height:16px; }
.login-card.shake{ animation: shake .4s ease; }
@keyframes shake{
  0%,100%{ transform:translateX(0); }
  20%{ transform:translateX(-10px); } 40%{ transform:translateX(10px); }
  60%{ transform:translateX(-6px); } 80%{ transform:translateX(6px); }
}