/* Interactive "Simple Web Page Request" lesson.
   Every rule is scoped under .awr so nothing leaks into Bootstrap / site styles. */

.awr{
  --paper:#F1F4F8;
  --panel:#FFFFFF;
  --ink:#16283C;
  --muted:#6B7E92;
  --wire:#C4D0DC;
  --blue:#1E5AA8;
  --amber:#E8940A;
  --green:#1F8A5B;
  --red:#C4452F;
  --violet:#6C4FB8;
  --mono:ui-monospace,"SF Mono","Cascadia Mono","JetBrains Mono",Menlo,Consolas,monospace;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  box-sizing:border-box;
  max-width:1060px;
  margin:0 auto;
  padding:28px 20px 36px;
  background:var(--paper);
  background-image:radial-gradient(var(--wire) 1px, transparent 1px);
  background-size:26px 26px;
  border:1px solid var(--wire);
  border-radius:16px;
  color:var(--ink);
  font-family:var(--sans);
}
.awr *{box-sizing:border-box;margin:0;padding:0}

/* the base template styles the site <header>; undo that for the lesson's own */
.awr header{background:none;border:0;padding:0;margin-bottom:22px}
.awr .eyebrow{
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;
  color:var(--blue);text-transform:uppercase;margin-bottom:8px;
}
.awr h1{font-size:clamp(24px,4vw,38px);font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.awr h1 .addr{
  font-family:var(--mono);font-weight:600;font-size:.55em;
  background:var(--ink);color:#EAF2FB;border-radius:6px;
  padding:4px 10px;vertical-align:middle;margin-left:10px;white-space:nowrap;
}
.awr .sub{color:var(--muted);margin-top:8px;max-width:640px;font-size:15px;line-height:1.5}

/* phase rail */
.awr .phases{
  display:flex;gap:6px;margin:20px 0 14px;flex-wrap:wrap;
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
}
.awr .phase{
  padding:6px 12px;border:1px solid var(--wire);border-radius:20px;
  background:var(--panel);color:var(--muted);transition:all .3s;
}
.awr .phase.active{border-color:var(--blue);color:var(--blue);background:#E7F0FB;font-weight:700}
.awr .phase.done{color:var(--green);border-color:#BBDCCB}
.awr .phase.done::before{content:"✓ "}

.awr .grid{display:grid;grid-template-columns:1fr;gap:16px}

.awr .panel{
  background:var(--panel);border:1px solid var(--wire);border-radius:14px;
  box-shadow:0 1px 3px rgba(22,40,60,.06);
  overflow:hidden;
}
.awr .panel-label{
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);padding:10px 16px;border-bottom:1px solid var(--wire);
  display:flex;justify-content:space-between;align-items:center;
}
.awr .panel-label .dot{width:8px;height:8px;border-radius:50%;background:var(--green);display:inline-block;margin-right:6px}

/* map */
.awr #map{display:block;width:100%;height:auto}
.awr .node-box{fill:#fff;stroke:var(--wire);stroke-width:1.5;rx:10}
.awr .node-label{font-family:var(--mono);font-size:12px;font-weight:700;fill:var(--ink)}
.awr .node-sub{font-family:var(--mono);font-size:9.5px;fill:var(--muted)}
.awr .zone{fill:none;stroke:var(--wire);stroke-width:1.5;stroke-dasharray:5 6;rx:14}
.awr .zone-label{font-family:var(--mono);font-size:9.5px;fill:var(--muted);letter-spacing:.14em}
.awr .edge{stroke:var(--wire);stroke-width:2;stroke-dasharray:1 6;stroke-linecap:round}
.awr .edge.hot{stroke:var(--blue);stroke-dasharray:none;opacity:.35}
.awr .node.glow rect{stroke:var(--blue);stroke-width:2.5;filter:drop-shadow(0 0 6px rgba(30,90,168,.45))}
.awr .packet-label{font-family:var(--mono);font-size:10px;font-weight:700}
.awr #map .learned{animation:awr-learned 1.8s ease}
@keyframes awr-learned{0%,55%{fill:var(--green);font-weight:700}}

/* step card */
.awr .step-card{padding:18px 20px}
.awr .step-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.awr .step-num{
  font-family:var(--mono);font-size:12px;font-weight:700;color:var(--blue);
  background:#E7F0FB;border-radius:6px;padding:3px 9px;white-space:nowrap;
}
.awr .step-title{font-size:19px;font-weight:800;letter-spacing:-.01em}
.awr .step-body{margin-top:10px;line-height:1.65;font-size:15px;color:#33475C}
.awr .step-body code{
  font-family:var(--mono);font-size:.88em;color:inherit;background:#EEF3F8;
  border:1px solid var(--wire);border-radius:4px;padding:1px 5px;white-space:nowrap;
}
.awr .analogy{
  margin-top:12px;padding:10px 14px;border-left:3px solid var(--amber);
  background:#FCF6EA;border-radius:0 8px 8px 0;font-size:13.5px;color:#6B5218;line-height:1.55;
}
.awr .analogy b{color:#8A6410}
.awr .analogy code{
  font-family:var(--mono);font-size:.9em;color:inherit;background:#F7EDD6;
  border:1px solid #EBDCB4;border-radius:4px;padding:0 4px;white-space:nowrap;
}

/* encapsulation stack */
.awr .stack{padding:4px 0}
.awr .layer-row{
  display:flex;align-items:baseline;gap:10px;padding:10px 16px;
  border-bottom:1px solid var(--wire);transition:opacity .3s;
}
.awr .layer-row:last-child{border-bottom:none}
.awr .layer-num{
  font-family:var(--mono);font-size:10px;font-weight:700;color:var(--muted);
  background:#EEF3F8;border:1px solid var(--wire);border-radius:5px;padding:2px 7px;flex-shrink:0;
}
.awr .layer-name{font-size:12.5px;font-weight:800;width:76px;flex-shrink:0;letter-spacing:-.01em}
.awr .layer-content{font-family:var(--mono);font-size:11px;color:#33475C;line-height:1.55;word-break:break-word}
.awr .layer-row.dim{opacity:.32}
.awr .layer-row.hot .layer-content{color:var(--red)}
.awr .layer-row.hot .layer-content b{color:var(--red)}
.awr .layer-row.hot .layer-num{background:#F9E9E5;border-color:#E5B7AC;color:var(--red)}

.awr .controls{
  display:flex;gap:10px;align-items:center;padding:14px 20px;
  border-top:1px solid var(--wire);flex-wrap:wrap;
}
.awr button{
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.04em;
  border-radius:8px;border:1.5px solid var(--ink);background:var(--ink);color:#fff;
  padding:9px 18px;cursor:pointer;transition:transform .1s, opacity .2s;
}
.awr button:hover:not(:disabled){transform:translateY(-1px)}
.awr button:focus{outline:none}
.awr button:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.awr button.ghost{background:#fff;color:var(--ink)}
.awr button:disabled{opacity:.35;cursor:default}
.awr .kbd-hint{font-family:var(--mono);font-size:11px;color:var(--muted);margin-left:auto}
.awr .progress-track{height:4px;background:var(--wire);border-radius:4px;overflow:hidden;margin:0 20px}
.awr .progress-fill{height:100%;background:var(--blue);width:0;transition:width .4s ease;border-radius:4px}

/* log */
.awr .log{
  font-family:var(--mono);font-size:12px;line-height:1.9;
  padding:12px 16px;height:190px;overflow-y:auto;background:#0F1B29;color:#B8C9DA;
}
.awr .log .t{color:#5C7288;margin-right:10px}
.awr .log .tag{font-weight:700;margin-right:8px}
.awr .tag.dhcp{color:#FFB84D}.awr .tag.arp{color:#B79CFF}.awr .tag.dns{color:#6FB4FF}
.awr .tag.tcp{color:#FF8E7A}.awr .tag.http{color:#5FD99C}.awr .tag.sys{color:#8CA0B3}
.awr .log .line{opacity:0;animation:awr-fadein .35s forwards}
@keyframes awr-fadein{to{opacity:1}}

.awr .credit{
  margin-top:22px;text-align:center;font-size:12.5px;color:var(--muted);line-height:1.6;
}

@media (min-width:880px){
  .awr .grid{grid-template-columns:1.05fr .95fr}
  .awr .map-panel{grid-column:1 / -1}
  .awr .log-panel{grid-column:1 / -1}
}
@media (prefers-reduced-motion: reduce){
  .awr .log .line{animation:none;opacity:1}
  .awr #map .learned{animation:none}
  .awr button:hover:not(:disabled){transform:none}
}