/* public_html/courses/azure/assets/css/azure.css */
/* ==========================================================================
   Azure course styles
   ==========================================================================
   Everything specific to the Azure course's learning-content page lives
   here: the sidebar + article layout, topic typography, callouts, and the
   colorful icon/flow/stack components used inside topic content.

   This file is loaded ONLY on Azure course pages (see courses/azure/index.php,
   which sets $pageExtraCss before including partials/header.php). It never
   touches assets/css/style.css, which stays as the shared site-wide
   stylesheet (header, footer, homepage, buttons, design tokens, etc.)

   When adding a new course later (e.g. courses/aws/):
     1. Copy this whole file to courses/aws/assets/css/aws.css
     2. Restyle/rename classes as you like for that course's look
     3. In courses/aws/index.php, set:
          $pageExtraCss = ['/courses/aws/assets/css/aws.css'];
        before including partials/header.php
   No changes to style.css or header.php are ever needed for a new course.
   ========================================================================== */

/* ==========================================================================
   Docs layout — course content with left topic sidebar + right article pane
   ========================================================================== */

.docs-toggle{
  display:none;align-items:center;gap:8px;width:100%;margin:16px auto 0;padding:13px 18px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-s);
  font-family:var(--font-display);font-weight:600;font-size:.92rem;color:var(--ink-900);cursor:pointer;
}
.docs-toggle svg{flex:none;color:var(--blue-700)}

.docs-wrap{width:100%;margin:0;padding:0}
.docs-shell{
  display:grid;grid-template-columns:280px minmax(0,1fr);gap:0;
  align-items:start;position:relative;width:100%;
}
.docs-overlay{display:none}

/* ---- Sidebar ---- */
.docs-sidebar{
  position:sticky;top:92px; /* header height (72px) + a little breathing room */
  max-height:calc(100vh - 92px);overflow-y:auto;
  padding:28px 20px 40px 28px;border-right:1px solid var(--line);
}
.docs-search{position:relative;margin-bottom:16px}
.docs-search input{
  width:100%;padding:11px 14px 11px 38px;border:1.5px solid var(--line);border-radius:var(--radius-s);
  font-family:var(--font-body);font-size:.9rem;color:var(--ink-900);background:var(--surface);
  transition:border-color .15s ease;
}
.docs-search input:focus{outline:none;border-color:var(--blue-500)}
.docs-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--ink-400);pointer-events:none}
.docs-no-results{display:none;font-size:.85rem;color:var(--ink-400);padding:4px 2px 14px}
.docs-no-results.is-visible{display:block}

.docs-group{margin-bottom:22px}
.docs-group[hidden]{display:none}
.docs-group-title{
  font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--ink-400);margin:0 0 8px;padding:0 10px;
}
.docs-nav ul{display:flex;flex-direction:column;gap:1px}
.docs-link{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--radius-s);
  font-size:.9rem;color:var(--ink-600);font-weight:500;line-height:1.35;
  border-left:2.5px solid transparent;transition:background .12s ease, color .12s ease;
}
.docs-link:hover{background:var(--bg);color:var(--ink-900)}
.docs-link.is-active{background:#EEF2FF;color:var(--blue-700);border-left-color:var(--blue-700);font-weight:600}
.docs-link .num{
  flex:none;font-family:var(--font-mono);font-size:.72rem;color:var(--ink-400);
  width:20px;text-align:right;
}
.docs-link.is-active .num{color:var(--blue-700)}
.docs-link[hidden]{display:none}

/* ---- Content ---- */
.docs-content{min-width:0;padding:28px 40px 80px 40px}
.docs-progress-track{height:4px;background:var(--line);border-radius:999px;overflow:hidden;margin-bottom:10px}
.docs-progress-fill{height:100%;background:linear-gradient(90deg,var(--blue-700),var(--amber-500));width:0%;transition:width .3s ease}
.docs-progress-label{
  display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:.78rem;
  color:var(--ink-400);margin-bottom:22px;
}

.docs-article{max-width:none}
.docs-article,.topic-panel{scroll-margin-top:92px}
.topic-panel{display:none;animation:docsFadeIn .25s ease}
.topic-panel.is-active{display:block}
@keyframes docsFadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

.topic-eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:.78rem;color:var(--blue-700);
  background:#EEF2FF;padding:4px 10px;border-radius:999px;margin-bottom:14px;
}
.topic-panel h1{font-size:clamp(1.6rem,3vw,2.1rem);margin-bottom:18px}
.topic-panel h2{font-size:1.15rem;margin:28px 0 12px;color:var(--ink-900)}
.topic-panel p{color:var(--ink-600);font-size:1rem}
.topic-panel ul,.topic-panel ol{color:var(--ink-600);font-size:1rem;margin:0 0 16px;padding-left:22px}
.topic-panel ul{list-style:disc}
.topic-panel ol{list-style:decimal}
.topic-panel li{margin-bottom:6px}
.topic-panel li::marker{color:var(--ink-400)}
.topic-panel strong{color:var(--ink-900);font-weight:600}
.topic-panel code{
  font-family:var(--font-mono);background:var(--bg);border:1px solid var(--line);
  padding:2px 7px;border-radius:5px;font-size:.85em;color:var(--blue-700);
}
.topic-panel pre{
  background:#0D1526;color:#D7E1F5;border-radius:var(--radius-m);padding:18px 20px;
  overflow-x:auto;font-family:var(--font-mono);font-size:.85rem;margin:0 0 20px;line-height:1.7;
}
.topic-panel pre code{background:none;border:none;padding:0;color:inherit}

.callout{
  display:flex;gap:12px;padding:16px 18px;border-radius:var(--radius-m);margin:20px 0;
  border:1px solid var(--line);background:var(--bg);
}
.callout p{margin:0;font-size:.92rem;color:var(--ink-600)}
.callout-icon{flex:none;font-size:1.1rem;line-height:1.4}
.callout-tip{background:#FFF8EC;border-color:#F5DDA8}
.callout-info{background:#EEF2FF;border-color:#C9D6FA}
.callout-warn{background:#FDF2EE;border-color:#F5C9B8}

.topic-nav{
  display:flex;justify-content:space-between;gap:16px;margin-top:44px;
  padding-top:24px;border-top:1px solid var(--line);
}
.topic-nav-btn{
  display:flex;flex-direction:column;gap:4px;padding:14px 18px;border:1px solid var(--line);
  border-radius:var(--radius-m);max-width:48%;transition:border-color .15s ease, background .15s ease;
}
.topic-nav-btn:hover{border-color:var(--blue-500);background:var(--bg)}
.topic-nav-btn span{font-family:var(--font-mono);font-size:.74rem;color:var(--ink-400)}
.topic-nav-btn strong{font-size:.92rem;color:var(--ink-900);font-weight:600}
.topic-nav-btn.next{margin-left:auto;text-align:right;align-items:flex-end}
.topic-nav-btn[hidden]{visibility:hidden}

/* ---- Colorful icon cards + hierarchy flow (used inside topic content) ---- */
.icon-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:18px 0 26px}
.icon-card{
  display:flex;gap:14px;padding:18px;border-radius:var(--radius-m);border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-card);
}
.icon-card .icon-badge{
  flex:none;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:1.35rem;line-height:1;
}
.icon-card h4{font-family:var(--font-display);font-size:.98rem;margin:0 0 4px;color:var(--ink-900)}
.icon-card p{margin:0;font-size:.86rem;color:var(--ink-600)}

.icon-badge-blue{background:#EAF0FF;color:var(--blue-700)}
.icon-badge-amber{background:#FFF3DE;color:#B9740A}
.icon-badge-teal{background:#E1FAF0;color:#0F9D71}
.icon-badge-purple{background:#F1E8FE;color:#7C3AED}
.icon-badge-coral{background:#FDEAEA;color:#D33A3A}
.icon-badge-navy{background:#E7EBF7;color:var(--navy-900)}

/* Hierarchy / process flow with icon nodes connected by arrows */
.flow-row{
  display:flex;align-items:stretch;gap:0;margin:22px 0 26px;overflow-x:auto;padding-bottom:4px;
}
.flow-node{
  flex:1 1 0;min-width:130px;display:flex;flex-direction:column;align-items:center;text-align:center;
  gap:8px;padding:16px 12px;border-radius:var(--radius-m);border:1px solid var(--line);background:var(--surface);
}
.flow-node .icon-badge{width:40px;height:40px;font-size:1.2rem}
.flow-node strong{font-size:.86rem;color:var(--ink-900);font-family:var(--font-display)}
.flow-node span{font-size:.76rem;color:var(--ink-400)}
.flow-arrow{
  flex:none;display:flex;align-items:center;justify-content:center;width:32px;color:var(--ink-400);
  font-size:1.1rem;
}
@media (max-width:640px){
  .flow-row{flex-direction:column;gap:8px}
  .flow-arrow{width:100%;transform:rotate(90deg);padding:2px 0}
}

/* ---- Interactive responsibility-stack simulator (used on Azure Introduction) ---- */
.stack-sim{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:26px 24px 24px;margin:20px 0 28px;box-shadow:var(--shadow-card);
}
.stack-tabs{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}
.stack-tab{
  font-family:var(--font-display);font-weight:600;font-size:.88rem;padding:9px 18px;border-radius:999px;
  border:1.5px solid var(--line);background:var(--bg);color:var(--ink-600);cursor:pointer;transition:.15s ease;
}
.stack-tab:hover{border-color:var(--blue-500);color:var(--blue-700)}
.stack-tab.is-active{background:var(--blue-700);border-color:var(--blue-700);color:#fff}

.stack-diagram{display:flex;flex-direction:column;gap:6px}
.stack-layer{
  padding:14px 18px;border-radius:var(--radius-s);font-family:var(--font-display);font-weight:600;font-size:.9rem;
  background:var(--bg);color:var(--ink-400);border:1.5px solid var(--line);
  transition:background .25s ease, color .25s ease, border-color .25s ease, transform .2s ease;
}
.stack-layer.is-mine{background:#FFF3DE;color:#8A5A00;border-color:#F5C877;transform:scale(1.015)}
.stack-layer.is-azure{background:#EAF0FF;color:var(--blue-700);border-color:#B9CCFA}

.stack-legend{display:flex;gap:20px;margin:18px 0 10px;flex-wrap:wrap}
.legend-chip{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--ink-600);font-weight:500}
.legend-dot{width:12px;height:12px;border-radius:4px;display:inline-block}
.legend-dot-mine{background:#F5A623}
.legend-dot-azure{background:var(--blue-700)}

.stack-caption{margin:0;font-size:.92rem;color:var(--ink-600);min-height:2.6em}

@media (max-width:560px){
  .stack-sim{padding:20px 16px}
  .stack-layer{font-size:.85rem;padding:12px 14px}
}

/* ---- Responsive: collapsible sidebar below ~980px ---- */
@media (max-width:980px){
  .docs-wrap{padding:0 20px} /* full-bleed on desktop, comfortable edges on smaller screens */
  .docs-toggle{display:flex}
  .docs-shell{display:block}
  .docs-overlay{
    display:block;position:fixed;inset:0;background:rgba(11,21,48,.5);z-index:59;
    opacity:0;visibility:hidden;transition:opacity .2s ease, visibility .2s ease;
  }
  .docs-overlay.is-open{opacity:1;visibility:visible}
  .docs-sidebar{
    position:fixed;top:0;left:0;bottom:0;z-index:60;width:min(300px,84vw);max-height:none;
    background:var(--surface);padding:20px 18px 24px;border-right:none;box-shadow:var(--shadow-lift);
    transform:translateX(-100%);transition:transform .25s ease;
  }
  .docs-sidebar.is-open{transform:translateX(0)}
  .docs-content{padding:24px 0 60px}
}
@media (max-width:560px){
  .docs-wrap{padding:0 16px}
  .docs-content{padding:20px 0 48px}
  .topic-nav{flex-direction:column}
  .topic-nav-btn{max-width:100%}
  .topic-nav-btn.next{align-items:flex-start;text-align:left}
}

/* ==========================================================================
   Module exam (inline quiz inside a topic panel)
   ==========================================================================
   Used by any topics/*-exam.php file. The markup is generated by the small
   script inside each exam file — only the QUESTIONS array changes per module.
   ========================================================================== */
.exam-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:28px 26px;box-shadow:var(--shadow-card);margin:22px 0 8px;
}
.exam-top{
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  font-family:var(--font-mono);font-size:.78rem;color:var(--ink-400);margin-bottom:10px;flex-wrap:wrap;
}
.exam-counter{font-weight:600;color:var(--ink-600)}
.exam-bar{height:6px;background:var(--line);border-radius:999px;overflow:hidden;margin-bottom:26px}
.exam-bar-fill{height:100%;width:0;background:linear-gradient(90deg,var(--blue-700),var(--amber-500));transition:width .35s ease}

.exam-q{
  font-family:var(--font-display);font-size:1.16rem;font-weight:600;color:var(--ink-900);
  margin:0 0 20px;line-height:1.45;
}

/* Options: full-width stacked cards, never inline buttons */
.exam-opts{display:flex;flex-direction:column;gap:11px;margin:0 0 22px;padding:0;list-style:none}
.exam-opt{
  display:flex;align-items:center;gap:14px;width:100%;
  padding:15px 18px;margin:0;
  border:1.5px solid var(--line);border-radius:var(--radius-m);
  background:var(--surface);
  font-family:var(--font-body);font-size:.96rem;line-height:1.45;color:var(--ink-600);
  text-align:left;cursor:pointer;
  transition:border-color .15s ease, background .15s ease, color .15s ease, transform .12s ease, box-shadow .15s ease;
  -webkit-appearance:none;appearance:none;
}
.exam-opt:hover:not(:disabled){
  border-color:var(--blue-500);background:#F7F9FF;color:var(--ink-900);
  transform:translateX(3px);box-shadow:0 4px 14px -8px rgba(30,58,138,.4);
}
.exam-opt:disabled{cursor:default;transform:none;box-shadow:none}
.exam-opt .exam-key{
  flex:none;width:30px;height:30px;border-radius:50%;
  background:var(--bg);border:1.5px solid var(--line);color:var(--ink-400);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:.8rem;font-weight:600;
  transition:background .15s ease, border-color .15s ease, color .15s ease;
}
.exam-opt:hover:not(:disabled) .exam-key{border-color:var(--blue-500);color:var(--blue-700)}
.exam-opt .exam-text{flex:1;min-width:0}

.exam-opt.is-correct{background:#EAF9F0;border-color:var(--success);color:#0B6B43;font-weight:500}
.exam-opt.is-correct .exam-key{background:var(--success);border-color:var(--success);color:#fff}
.exam-opt.is-wrong{background:#FDECEC;border-color:#D33A3A;color:#96201F;font-weight:500}
.exam-opt.is-wrong .exam-key{background:#D33A3A;border-color:#D33A3A;color:#fff}
.exam-opt.is-dim{opacity:.55}

.exam-explain{
  display:none;gap:13px;padding:17px 19px;border-radius:var(--radius-m);margin:0 0 20px;
  background:#EEF2FF;border:1px solid #C9D6FA;
  animation:examFade .25s ease;
}
.exam-explain.is-visible{display:flex}
@keyframes examFade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.exam-explain strong{
  display:block;margin-bottom:4px;color:var(--ink-900);
  font-family:var(--font-display);font-size:.92rem;
}
.exam-explain p{margin:0;font-size:.92rem;color:var(--ink-600);line-height:1.6}
.exam-explain .exam-explain-icon{flex:none;font-size:1.1rem;line-height:1.4}

.exam-actions{display:flex;justify-content:flex-end;gap:10px;margin:0}

.exam-score{text-align:center;padding:16px 0 6px}
.exam-score .exam-score-num{
  font-family:var(--font-display);font-size:3.4rem;font-weight:800;color:var(--blue-700);
  line-height:1;margin-bottom:10px;
}
.exam-score .exam-score-msg{color:var(--ink-600);font-size:.98rem;margin-bottom:22px}
.exam-score-badge{
  display:inline-block;font-family:var(--font-mono);font-size:.78rem;
  padding:6px 16px;border-radius:999px;margin-bottom:16px;
}
.exam-score-badge.pass{background:#EAF9F0;color:#0B6B43}
.exam-score-badge.fail{background:#FDECEC;color:#96201F}

.exam-review{margin-top:26px;text-align:left;border-top:1px solid var(--line);padding-top:22px}
.exam-review h4{font-family:var(--font-display);font-size:.95rem;margin:0 0 14px}
.exam-review-item{
  display:flex;gap:11px;padding:10px 0;border-bottom:1px solid var(--line);
  font-size:.9rem;color:var(--ink-600);line-height:1.5;
}
.exam-review-item:last-child{border-bottom:none}
.exam-review-item .mark{flex:none;font-size:.95rem}

@media (max-width:560px){
  .exam-panel{padding:20px 16px}
  .exam-q{font-size:1.04rem}
  .exam-opt{padding:13px 14px;gap:11px;font-size:.92rem}
  .exam-opt .exam-key{width:26px;height:26px;font-size:.74rem}
  .exam-opt:hover:not(:disabled){transform:none}
  .exam-actions{justify-content:stretch}
  .exam-actions .btn{width:100%}
}

/* ==========================================================================
   Autoscale simulator (Module 2 — VM Scale Sets)
   ========================================================================== */
.scale-sim{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:24px;margin:20px 0 28px;box-shadow:var(--shadow-card);
}
.scale-control{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:6px}
.scale-control label{font-family:var(--font-display);font-weight:600;font-size:.9rem;color:var(--ink-900)}
.scale-control input[type=range]{flex:1;min-width:180px;accent-color:var(--blue-700)}
.scale-cpu{
  font-family:var(--font-mono);font-size:1.1rem;font-weight:600;min-width:58px;text-align:right;
  transition:color .2s ease;
}
.scale-cpu.low{color:var(--success)}
.scale-cpu.mid{color:#B9740A}
.scale-cpu.high{color:#D33A3A}
.scale-thresholds{font-family:var(--font-mono);font-size:.75rem;color:var(--ink-400);margin:0 0 18px}

.scale-vms{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;min-height:78px}
.scale-vm{
  width:64px;height:74px;border-radius:var(--radius-m);border:1.5px solid #B9CCFA;background:#EAF0FF;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  animation:vmPop .3s ease;
}
.scale-vm .vm-icon{font-size:1.3rem;line-height:1}
.scale-vm .vm-name{font-family:var(--font-mono);font-size:.64rem;color:var(--blue-700)}
.scale-vm.is-new{border-color:var(--success);background:#EAF9F0}
.scale-vm.is-new .vm-name{color:#0B6B43}
@keyframes vmPop{from{opacity:0;transform:scale(.7)}to{opacity:1;transform:scale(1)}}

.scale-status{
  display:flex;align-items:center;gap:10px;padding:13px 16px;border-radius:var(--radius-m);
  background:var(--bg);border:1px solid var(--line);font-size:.9rem;color:var(--ink-600);
}
.scale-status .status-icon{flex:none;font-size:1.05rem}
.scale-status.scaling-out{background:#EAF9F0;border-color:#A8E0C3;color:#0B6B43}
.scale-status.scaling-in{background:#FFF3DE;border-color:#F5C877;color:#8A5A00}

/* ==========================================================================
   Spec/comparison table (used across lessons)
   ========================================================================== */
.spec-table{width:100%;border-collapse:collapse;margin:18px 0 26px;font-size:.9rem}
.spec-table th,.spec-table td{
  text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;
}
.spec-table thead th{
  font-family:var(--font-mono);font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;
  color:var(--ink-400);background:var(--bg);border-bottom:1.5px solid var(--line);font-weight:500;
}
.spec-table tbody tr:last-child td{border-bottom:none}
.spec-table tbody td:first-child{font-weight:600;color:var(--ink-900)}
.spec-table td{color:var(--ink-600)}
.spec-table code{font-size:.84em}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
@media (max-width:560px){
  .spec-table{font-size:.84rem;min-width:520px}
}

/* ==========================================================================
   NSG rule evaluation simulator (Module 4 — Networking)
   ========================================================================== */
.nsg-sim{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:24px;margin:20px 0 28px;box-shadow:var(--shadow-card);
}
.nsg-presets{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.nsg-preset{
  font-family:var(--font-display);font-weight:600;font-size:.84rem;padding:8px 15px;border-radius:999px;
  border:1.5px solid var(--line);background:var(--bg);color:var(--ink-600);cursor:pointer;transition:.15s ease;
}
.nsg-preset:hover{border-color:var(--blue-500);color:var(--blue-700)}
.nsg-preset.is-active{background:var(--blue-700);border-color:var(--blue-700);color:#fff}

.nsg-packet{
  display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:var(--radius-m);
  background:var(--bg);border:1px solid var(--line);margin-bottom:16px;
  font-family:var(--font-mono);font-size:.84rem;color:var(--ink-600);flex-wrap:wrap;
}
.nsg-packet .pkt-icon{font-size:1.2rem}

.nsg-rules{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.nsg-rule{
  display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:var(--radius-s);
  border:1.5px solid var(--line);background:var(--bg);font-size:.85rem;color:var(--ink-400);
  transition:all .25s ease;
}
.nsg-rule .rule-prio{
  flex:none;font-family:var(--font-mono);font-size:.76rem;font-weight:600;
  width:44px;color:var(--ink-400);
}
.nsg-rule .rule-name{flex:1;min-width:0;font-weight:600;color:var(--ink-600)}
.nsg-rule .rule-verdict{flex:none;font-family:var(--font-mono);font-size:.74rem}
.nsg-rule.is-skipped{opacity:.45}
.nsg-rule.is-match-allow{background:#EAF9F0;border-color:var(--success);color:#0B6B43}
.nsg-rule.is-match-allow .rule-name,.nsg-rule.is-match-allow .rule-prio{color:#0B6B43}
.nsg-rule.is-match-deny{background:#FDECEC;border-color:#D33A3A;color:#96201F}
.nsg-rule.is-match-deny .rule-name,.nsg-rule.is-match-deny .rule-prio{color:#96201F}
.nsg-rule.is-unreached{opacity:.3}

.nsg-verdict{
  display:flex;align-items:center;gap:11px;padding:14px 17px;border-radius:var(--radius-m);
  font-size:.92rem;border:1px solid var(--line);background:var(--bg);color:var(--ink-600);
}
.nsg-verdict .v-icon{flex:none;font-size:1.15rem}
.nsg-verdict.allowed{background:#EAF9F0;border-color:#A8E0C3;color:#0B6B43}
.nsg-verdict.blocked{background:#FDECEC;border-color:#F0B4B4;color:#96201F}
@media (max-width:560px){
  .nsg-sim{padding:18px 14px}
  .nsg-rule{font-size:.8rem;gap:8px;padding:10px 11px}
  .nsg-rule .rule-prio{width:36px}
}

/* ==========================================================================
   Load balancer / routing simulators (Module 5)
   ========================================================================== */
.lb-sim{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:24px;margin:20px 0 28px;box-shadow:var(--shadow-card);
}
.lb-controls{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:18px;align-items:center}
.lb-btn{
  font-family:var(--font-display);font-weight:600;font-size:.84rem;padding:9px 16px;border-radius:999px;
  border:1.5px solid var(--line);background:var(--bg);color:var(--ink-600);cursor:pointer;transition:.15s ease;
}
.lb-btn:hover{border-color:var(--blue-500);color:var(--blue-700)}
.lb-btn.primary{background:var(--blue-700);border-color:var(--blue-700);color:#fff}
.lb-btn.primary:hover{background:var(--blue-500);border-color:var(--blue-500);color:#fff}
.lb-btn.is-active{background:var(--blue-700);border-color:var(--blue-700);color:#fff}

.lb-stage{
  display:grid;grid-template-columns:88px 1fr;gap:16px;align-items:center;
  padding:18px;border-radius:var(--radius-m);background:var(--bg);border:1px solid var(--line);margin-bottom:16px;
}
.lb-front{
  display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 8px;
  border-radius:var(--radius-m);background:var(--blue-700);color:#fff;text-align:center;
}
.lb-front .lb-icon{font-size:1.5rem;line-height:1}
.lb-front strong{font-size:.74rem;font-family:var(--font-mono);font-weight:600}

.lb-backends{display:flex;gap:10px;flex-wrap:wrap}
.lb-node{
  flex:1 1 110px;min-width:104px;padding:13px 10px;border-radius:var(--radius-m);
  border:1.5px solid #B9CCFA;background:#EAF0FF;text-align:center;
  transition:all .25s ease;position:relative;
}
.lb-node .node-icon{font-size:1.3rem;line-height:1;display:block;margin-bottom:4px}
.lb-node .node-name{font-family:var(--font-mono);font-size:.72rem;color:var(--blue-700);display:block}
.lb-node .node-count{
  font-family:var(--font-display);font-size:1.25rem;font-weight:700;color:var(--blue-700);
  display:block;margin-top:5px;
}
.lb-node .node-label{font-size:.68rem;color:var(--ink-400);display:block}
.lb-node.is-hit{
  border-color:var(--success);background:#EAF9F0;transform:translateY(-4px);
  box-shadow:0 10px 20px -10px rgba(31,157,99,.6);
}
.lb-node.is-hit .node-name,.lb-node.is-hit .node-count{color:#0B6B43}
.lb-node.is-down{border-color:#F0B4B4;background:#FDECEC;opacity:.75}
.lb-node.is-down .node-name,.lb-node.is-down .node-count{color:#96201F}
.lb-node .node-health{
  position:absolute;top:6px;right:8px;font-size:.62rem;font-family:var(--font-mono);
}

.lb-log{
  padding:13px 16px;border-radius:var(--radius-m);background:var(--bg);
  border:1px solid var(--line);font-size:.88rem;color:var(--ink-600);
  display:flex;align-items:center;gap:10px;min-height:48px;
}
.lb-log .log-icon{flex:none;font-size:1.05rem}
.lb-log.hit{background:#EAF9F0;border-color:#A8E0C3;color:#0B6B43}
.lb-log.miss{background:#FDECEC;border-color:#F0B4B4;color:#96201F}

/* Path-based routing (Application Gateway) */
.agw-paths{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.agw-pool{
  display:flex;align-items:center;gap:12px;padding:13px 16px;border-radius:var(--radius-m);
  border:1.5px solid var(--line);background:var(--bg);margin-bottom:8px;transition:all .25s ease;
}
.agw-pool .pool-rule{
  flex:none;font-family:var(--font-mono);font-size:.78rem;color:var(--ink-400);
  min-width:112px;
}
.agw-pool .pool-name{flex:1;font-weight:600;font-size:.9rem;color:var(--ink-600)}
.agw-pool .pool-tag{font-family:var(--font-mono);font-size:.72rem;color:var(--ink-400)}
.agw-pool.is-hit{background:#EAF9F0;border-color:var(--success)}
.agw-pool.is-hit .pool-name,.agw-pool.is-hit .pool-rule,.agw-pool.is-hit .pool-tag{color:#0B6B43}
.agw-pool.is-dim{opacity:.45}

@media (max-width:560px){
  .lb-sim{padding:18px 14px}
  .lb-stage{grid-template-columns:1fr;gap:12px}
  .lb-front{flex-direction:row;justify-content:center;gap:10px}
  .agw-pool{flex-wrap:wrap;gap:6px}
  .agw-pool .pool-rule{min-width:0}
}