*{margin:0;padding:0;box-sizing:border-box;}
html{height:100%;background:#1a5fa8;-webkit-text-size-adjust:100%;text-size-adjust:100%;overscroll-behavior-y:none;}
body{height:100%;overscroll-behavior-y:none;}
body{
  font-family:Verdana,Tahoma,Geneva,sans-serif;
  font-size:14px;
  color:#222;
  background:#2B3A4A;
  background-image:url("data:image/svg+xml,%3Csvg width='6' height='6' viewBox='0 0 6 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23384d61' fill-opacity='0.4' fill-rule='evenodd'%3E%3Cpath d='M5 0h1L0 5v-1zM6 5v1H5z'/%3E%3C/g%3E%3C/svg%3E");
  cursor:crosshair;
  line-height:1.55;
}
a{--link-color:#0033CC;color:var(--link-color);text-decoration:underline;}
a:visited{color:var(--link-color);}

/* ── Animations ── */
@keyframes globeRotate{0%{box-shadow:-2px 0 4px rgba(0,0,0,.3) inset}50%{box-shadow:2px 0 4px rgba(0,0,0,.3) inset}100%{box-shadow:-2px 0 4px rgba(0,0,0,.3) inset}}
@keyframes continentDrift{0%{transform:translateX(-5px)}100%{transform:translateX(5px)}}
@keyframes blinkAnim{0%,50%{opacity:1}51%,100%{opacity:0}}
@keyframes dotPulse{0%,100%{opacity:1}50%{opacity:.4}}
@keyframes sectionFade{0%{opacity:0;transform:translateY(4px)}100%{opacity:1;transform:translateY(0)}}
@keyframes loadingDots{0%{content:''}25%{content:'.'}50%{content:'..'}75%{content:'...'}}
@keyframes errorBlink{0%,40%{opacity:1}41%,80%{opacity:.4}81%,100%{opacity:1}}

/* ── Layout: root flex column ── */
#root{
  display:flex;flex-direction:column;
  height:100vh;height:100dvh;
  width:100%;min-height:0;
}

/* ── Header ── */
.header-wrap{
  background:linear-gradient(135deg,#1a5fa8 0%,#2878c8 40%,#1a5fa8 70%,#0d3d7c 100%);
  padding:calc(14px + env(safe-area-inset-top, 0px)) calc(20px + env(safe-area-inset-right, 0px)) 14px calc(20px + env(safe-area-inset-left, 0px));border-bottom:3px solid #CC8800;
  display:flex;align-items:center;gap:14px;
}
.globe{
  width:32px;height:32px;border-radius:50%;flex-shrink:0;
  background:radial-gradient(circle at 40% 35%,#4FC3F7,#0277BD 50%,#01579B 75%,#002244);
  border:1px solid #00ACC1;position:relative;overflow:hidden;
  animation:globeRotate 3s linear infinite;
  box-shadow:0 2px 8px rgba(0,0,0,.3);
}
.globe::after{
  content:'';position:absolute;inset:0;border-radius:50%;
  background:linear-gradient(90deg,transparent 20%,rgba(76,175,80,.4) 22%,rgba(76,175,80,.4) 28%,transparent 30%),linear-gradient(90deg,transparent 55%,rgba(76,175,80,.35) 57%,rgba(76,175,80,.35) 70%,transparent 72%);
  animation:continentDrift 3s linear infinite;
}
.header-h1{
  font-family:Verdana,Tahoma,sans-serif;font-size:24px;font-weight:bold;
  color:#fff;letter-spacing:1px;text-shadow:1px 2px 4px rgba(0,0,0,.5);margin:0;
}
.header-subtitle{
  font-size:12px;color:#AACCDD;font-family:'Courier New',monospace;
  margin-top:3px;min-height:18px;
}
.header-subtitle .cursor{font-weight:bold;animation:blinkAnim 1s step-end infinite;}
/* ── Body row: sidebar + content ── */
.body-row{display:flex;flex:1;min-height:0;}

/* ── Sidebar ── */
.sidebar{
  width:230px;min-width:210px;flex-shrink:0;background:#0f3d72;
  border-right:2px solid #001a33;
  display:flex;flex-direction:column;
}
.sidebar-section-title{
  background:linear-gradient(to bottom,#004477,#003366);
  color:#FFCC00;font-size:10px;font-weight:bold;
  text-transform:uppercase;letter-spacing:1px;
  padding:7px 10px;border-bottom:1px solid #002244;text-align:center;
}
.mobile-nav-panel{display:contents;}
.sidebar-nav-wrap{display:flex;flex-direction:column;}
.nav-btn{
  display:block;width:100%;padding:9px 14px;
  color:#CCDDEE;text-decoration:none;font-size:12px;font-weight:bold;
  font-family:Verdana,sans-serif;
  border:none;border-bottom:1px solid #001a33;border-top:1px solid #004d80;
  cursor:pointer;text-align:left;transition:background 0.2s ease;
}
.nav-btn:not(.active){background:transparent;color:#CCDDEE;}
.nav-btn.active{border-left:3px solid #FFCC00;padding-left:11px;background:linear-gradient(to bottom,#005580,#004466);color:#fff;}
.nav-btn:focus-visible{outline:2px solid #FFCC00;outline-offset:2px;}
.nav-arrow{color:#CC8800;margin-right:6px;font-size:10px;}

.sidebar-bottom{flex:1;display:flex;flex-direction:column;justify-content:flex-end;}
.sidebar-links{padding:8px 10px;border-top:1px solid #004d80;}
.sb-link{--link-color:#88BBDD;display:block;color:var(--link-color);font-size:11px;padding:4px 0;text-decoration:none;}
.sb-link::before{content:'» ';color:#CC8800;}

.system-status{
  margin:10px 8px;background:#050e1a;border:1px solid #0a2d5a;
  font-family:'Courier New',monospace;font-size:11px;
}
.system-status .ss-title{
  background:linear-gradient(to right,#003366,#005580);
  color:#fff;font-size:10px;font-weight:bold;
  padding:4px 8px;
}
.system-status .ss-title .dot{
  width:7px;height:7px;border-radius:50%;background:#33FF33;
  display:inline-block;animation:dotPulse 2s ease-in-out infinite;
}
.system-status .ss-body{padding:7px 10px;line-height:1.9;}
.system-status .ss-row{display:block;}
.system-status .ss-key{color:#88AACC;display:inline-block;width:68px;}
.system-status .ss-val{color:#FFCC00;}
.system-status .ss-val.green{color:#33FF33;}

.sidebar-links-row{display:none;}

/* ── Content area ── */
.content-area{
  flex:1;background:#D6DFE8;
  display:flex;flex-direction:column;
  min-width:0;min-height:0;overflow:hidden;
}
.content-inner{
  flex:1;display:flex;flex-direction:column;
  padding:28px 36px;max-width:980px;width:100%;
  margin:0 auto;overflow-y:auto;min-height:0;
}
.content-inner.section-in{animation:sectionFade .2s ease forwards;}

/* Sections */
[data-section]{display:none;}
[data-section]:focus{outline:none;}
[data-section].section-active{animation:sectionFade .2s ease forwards;}
[data-section="ask"].section-active{display:flex;flex-direction:column;flex:1;min-height:0;}
[data-section="about"].section-active{display:block;}

/* Section heading */
.page-kicker{
  font-family:'Courier New',monospace;
  font-size:12px;
  font-weight:bold;
  color:#003355;
  text-transform:uppercase;
  letter-spacing:0;
  margin-bottom:8px;
}
.section-heading{
  font-family:Verdana,Tahoma,sans-serif;font-size:22px;font-weight:bold;
  color:#0d3d7c;padding-bottom:6px;border-bottom:2px solid #CC8800;
  margin-bottom:16px;margin-top:0;
  display:flex;align-items:center;gap:9px;
}

.ask-workspace{
  display:flex;flex-direction:column;flex:1;min-height:0;
  max-width:980px;margin:0 auto;width:100%;
}

/* ── Ask section ── */
#chat-container{
  flex:1;min-height:0;overflow-y:auto;
  display:flex;flex-direction:column;gap:16px;
  padding:0 0 8px;
  width:100%;
  scrollbar-width:thin;
  scrollbar-color:#1a4a7a #050e1a;
}
#chat-container::-webkit-scrollbar{width:8px;}
#chat-container::-webkit-scrollbar-track{
  background:#050e1a;
  border-left:1px solid #001a33;
}
#chat-container::-webkit-scrollbar-thumb{
  background:#1a4a7a;
  border:1px solid #003366;
}
#welcome{padding:0;}
.welcome-intro{font-size:16px;color:#333;margin-bottom:10px;line-height:1.7;}
.welcome-examples-title{
  font-size:14px;font-weight:bold;color:#0d3d7c;
  text-transform:uppercase;letter-spacing:1px;
  margin-bottom:8px;font-family:Verdana,sans-serif;
  border-bottom:1px solid #aabbcc;padding-bottom:5px;
}
.example-questions{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;margin-bottom:0;}
.example-trigger{
  background:#e0e8f0;
  border:1px solid #aabbcc;
  padding:6px 10px;cursor:pointer;
  font-family:Verdana,sans-serif;font-size:13px;color:#0d3d7c;
  font-weight:normal;
  transition:background 0.1s;
  border-radius:0;
}
.example-trigger:active{background:#c0d0e0;}
.example-trigger:focus-visible{
  outline:2px solid #FFCC00;
  outline-offset:2px;
}

/* ── Messages ── */
.message{max-width:100%;}

.message.user{
  background:transparent;color:#173a5e;
  font-family:Verdana,sans-serif;font-size:15px;
  padding:4px 18px 12px;border:none;border-left:3px solid #5f86ad;
  white-space:pre-wrap;word-break:break-word;line-height:1.6;
}
.message.user::before{
  content:'Your question';
  display:block;margin-bottom:4px;
  color:#5c7187;font:700 10px 'Courier New',monospace;
  letter-spacing:1px;text-transform:uppercase;
}

.message.assistant{
  background:transparent;border:none;border-top:1px solid #b0c4d8;
  display:flex;flex-direction:column;
  padding-top:4px;
}
.assistant-body{padding:14px 18px;}
.message.assistant .answer{
  font-family:Verdana,sans-serif;font-size:15px;color:#222;
  white-space:pre-wrap;line-height:1.7;
}
.message.assistant .answer.answer-rendered{white-space:normal;}
.answer-rendered{font-family:Verdana,sans-serif;font-size:15px;color:#222;line-height:1.75;}
.answer-rendered h3,
.answer-rendered h4,
.answer-rendered h5{color:#0d3d7c;margin:10px 0 6px;font-weight:bold;}
.answer-rendered h3{font-size:18px;border-bottom:1px solid #aabbcc;padding-bottom:4px;}
.answer-rendered h4{font-size:16px;}
.answer-rendered h5{font-size:15px;}
.answer-rendered p{margin:0 0 12px;}
.answer-rendered p:last-child{margin-bottom:0;}
.answer-rendered ul,
.answer-rendered ol{margin:6px 0 12px 22px;}
.answer-rendered li{margin:4px 0;}
.answer-rendered table{border-collapse:collapse;width:100%;margin:10px 0 14px;font-size:14px;}
.table-scroll{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;}
.answer-rendered .table-scroll table{width:max-content;min-width:100%;}
.answer-rendered th,
.answer-rendered td{border:1px solid #aabbcc;padding:6px 8px;text-align:left;vertical-align:top;}
.answer-rendered th{background:#ccd9e8;color:#003355;font-weight:bold;}
.answer-rendered pre{background:#0a0f14;color:#33FF33;border:1px solid #1a3a1a;padding:10px 12px;overflow-x:auto;font-family:'Courier New',monospace;font-size:12px;line-height:1.55;margin:10px 0;}
.answer-rendered code{font-family:'Courier New',monospace;background:#0a0f14;color:#FFCC00;padding:1px 4px;}
.answer-rendered pre code{background:transparent;color:inherit;padding:0;}

.sources{
  border-top:1px solid #b0c4d8;padding:12px 18px 16px;margin-top:16px;
  font-family:Verdana,sans-serif;font-size:13px;color:#003355;
}
.sources strong{
  display:block;color:#0d3d7c;font-size:11px;
  text-transform:uppercase;letter-spacing:1px;
  font-family:'Courier New',monospace;font-weight:bold;
  margin-bottom:6px;
}
.sources strong::before{content:'▪ ';color:#CC8800;}
.source-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin-top:8px;}
.source-card{
  display:grid;
  grid-template-columns:auto minmax(90px,150px) minmax(0,1fr);
  align-items:center;
  gap:8px;
  background:#edf3f8;
  border:1px solid #aabbcc;
  padding:6px 8px;
}
.source-index{
  font-family:'Courier New',monospace;
  font-size:11px;
  color:#FFCC00;
  background:#0d3d7c;
  padding:1px 5px;
}
.source-service{
  font-family:'Courier New',monospace;
  font-size:11px;
  font-weight:bold;
  color:#FFFFFF;
  background:#0d3d7c;
  padding:2px 5px;
  display:inline-block;
  min-width:40px;
  text-align:center;
}
.source-link{
  min-width:0;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  font-family:'Courier New',monospace;
  font-size:12px;
}
a.source-link{
  color:#0033CC;text-decoration:underline;
}
a.source-link:focus-visible{outline:2px solid #FFCC00;outline-offset:2px;}

.message.error{
  background:#333;color:#FFCC00;border:1px solid #CC8800;
  font-family:'Courier New',monospace;font-size:12px;
  padding:8px 12px;
  animation:errorBlink 1.6s step-end 2;
}
.message.error::before{content:'⚠ ERROR · ';font-weight:bold;color:#FFCC00;}

.message.loading{
  background:transparent;color:#526b82;border:none;
  font-family:Verdana,sans-serif;font-size:12px;
  padding:0 18px 8px 21px;
}
.loading-dots::after{
  content:'';display:inline-block;width:18px;text-align:left;color:#0d6f86;
  animation:loadingDots 1.5s steps(4,end) infinite;
}
.loading-title{color:#526b82;margin-bottom:8px;font-weight:bold;}
.loading-stages{display:flex;flex-wrap:wrap;align-items:center;gap:0;}
.loading-stages span{
  border:none;
  background:transparent;
  color:#71869a;
  padding:2px 0;
  font-family:'Courier New',monospace;
  font-size:11px;
}
.loading-stages span:not(:last-child)::after{
  content:'›';display:inline-block;margin:0 7px;color:#9aabba;
}
.loading-stages span.stage-active{color:#0d6278;font-weight:bold;}

/* ── Input area ── */
#input-area{
  border-top:1px solid #b0c4d8;
  background:transparent;
  padding:12px 14px;margin-top:auto;
  flex-shrink:0;
  width:100%;
  position:relative;
}
.command-feedback{
  position:absolute;right:14px;bottom:calc(100% + 8px);z-index:5;
  padding:6px 10px;
  background:#07131f;color:#33FF33;
  border:1px solid #CC8800;
  box-shadow:2px 2px 0 rgba(0,26,51,.35);
  font:700 11px 'Courier New',monospace;
  letter-spacing:.8px;text-transform:uppercase;
  pointer-events:none;
}
.command-feedback::before{content:'✓ ';color:#FFCC00;}
#input-area form{
  display:flex;align-items:center;gap:8px;
  width:100%;
}
.form-input{
  font-family:Verdana,sans-serif;font-size:16px;
  padding:6px 8px;border:2px inset #BBBBBB;
  background:#F5F5F5;width:100%;box-sizing:border-box;
  flex:1;min-width:0;min-height:38px;color:#222;
}
.form-input::placeholder{color:#999;}
.form-input.command-input{
  color:#CC8800;
  font-family:'Courier New',monospace;
  font-weight:bold;
}
.form-input:focus-visible{
  outline:2px solid #FFCC00;outline-offset:2px;
  border-color:#0d3d7c;
}
.submit-btn{
  background:#E0E0E0;color:#003366;font-family:Verdana,sans-serif;
  font-size:13px;font-weight:bold;padding:6px 22px;min-height:38px;
  border:2px outset #CCCCCC;cursor:pointer;flex-shrink:0;align-self:center;
  transition:background 0.1s;
}
.submit-btn:active{border-style:inset;background:#C8C8C8;}
.submit-btn:focus-visible{outline:2px solid #FFCC00;outline-offset:2px;}
.submit-btn:disabled{opacity:.5;cursor:not-allowed;border-style:outset;background:#E0E0E0;}

/* ── About section ── */
.about-body{max-width:980px;margin:0 auto;}
.about-body p{margin-bottom:14px;font-size:14px;line-height:1.7;color:#222;font-family:Verdana,Tahoma,sans-serif;}
.about-intro{padding-bottom:14px;border-bottom:1px solid #aabbcc;margin-bottom:16px;}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start;}
.about-subhead{
  font-size:11px;font-weight:bold;color:#FFCC00;
  font-family:'Courier New',monospace;text-transform:uppercase;letter-spacing:1px;
  background:#0d3d7c;padding:4px 8px;margin-bottom:8px;
  display:block;
}
.inline-code{
  font-family:'Courier New',monospace;background:#0a0f14;color:#FFCC00;
  padding:1px 4px;font-size:13px;
}
.tech-table{border-collapse:collapse;width:100%;margin:0;}
.tech-table td{padding:5px 12px 5px 0;vertical-align:top;font-size:14px;border-bottom:1px solid #d0dce8;}
.tech-table tr:last-child td{border-bottom:none;}
.tech-table td.k{font-weight:bold;color:#003355;white-space:nowrap;font-family:Verdana,sans-serif;width:30%;}
.tech-table td.v{color:#222;font-family:Verdana,sans-serif;}
.terminal-block{
  background:#0a0f14;color:#FFCC00;
  font-family:'Courier New',monospace;font-size:12px;
  padding:11px 14px;border:1px solid #1a3a1a;
  margin:0 0 16px;overflow-x:auto;white-space:pre;line-height:1.6;
}
.terminal-block.green{color:#33FF33;}

/* ── Footer ── */
.footer{
  background:linear-gradient(to bottom,#003d66,#002d4d);
  border-top:3px solid #CC8800;padding:10px calc(20px + env(safe-area-inset-right, 0px)) calc(10px + env(safe-area-inset-bottom, 0px)) calc(20px + env(safe-area-inset-left, 0px));
  text-align:center;color:#88AACC;font-size:11px;
}
.footer-copy{font-size:11px;color:#88AACC;font-family:'Courier New',monospace;}
.footer-note{font-size:10px;color:#5588aa;font-family:'Courier New',monospace;margin-top:3px;}

@media(hover:hover) and (pointer:fine){
  a:hover{color:#FF6600;}
  .nav-btn:not(.active):hover{background:linear-gradient(to bottom,#004466,#003a55);color:#fff;}
  .nav-btn.active:hover{background:linear-gradient(to bottom,#0066aa,#005580);}
  .sb-link:hover,.sidebar-links-row a:hover{color:#FFCC00;text-decoration:underline;}
  #chat-container::-webkit-scrollbar-thumb:hover{background:#CC8800;border-color:#FFCC00;}
  .example-trigger:hover{background:#d0dce8;border-color:#99aacc;}
  .source-card:hover{background:#e4ecf4;border-color:#8899bb;}
  a.source-link:hover{color:#FF6600;text-decoration:underline;}
  .submit-btn:hover{border-style:inset;background:#D0D0D0;}
  .answer-action:hover{background:#d4e3f0;}
}
/* ── Responsive layout ── */
@media(min-width:769px) and (max-width:1200px){
  .example-questions{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media(min-width:769px) and (max-width:1100px){
  .about-grid{grid-template-columns:minmax(0,1fr);}
}
@media(max-width:768px), (max-height:500px) and (pointer:coarse){
  body{height:auto;min-height:100%;cursor:default;}
  #root{height:auto;min-height:100vh;min-height:100dvh;overflow:visible;}
  .header-wrap{
    padding:calc(12px + env(safe-area-inset-top, 0px)) calc(14px + env(safe-area-inset-right, 0px)) 12px calc(14px + env(safe-area-inset-left, 0px));
  }
  .body-row{flex:1 0 auto;flex-direction:column;min-height:0;overflow:visible;}
  .sidebar{width:100%;min-width:0;display:block;border-right:none;border-bottom:2px solid #001a33;}
  .sidebar-section-title{display:none;}
  .mobile-nav-panel{
    display:grid;grid-template-columns:minmax(0,2fr) minmax(0,3fr);
    padding-left:env(safe-area-inset-left, 0px);padding-right:env(safe-area-inset-right, 0px);
    background:#0f3d72;
  }
  .sidebar-nav-wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
  .nav-btn{
    width:100%;min-height:44px;text-align:center;padding:10px 6px;font-size:12px;
    border-right:1px solid #001a33;border-left:none!important;
  }
  .nav-btn:last-child{border-right:none;}
  .nav-btn.active{padding-left:6px;border-left:none;border-bottom:3px solid #FFCC00;}
  .sidebar-bottom{display:none;}
  .sidebar-links-row{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;
    padding:0;border-top:0;width:100%;background:#002d4d;
  }
  .sidebar-links-row a{
    --link-color:#88BBDD;color:var(--link-color);font-size:10px;text-align:center;text-decoration:none;
    min-height:44px;padding:8px 3px;border-right:1px solid #001a33;
    display:flex;align-items:center;justify-content:center;
  }
  .sidebar-links-row a:last-child{border-right:none;}
  .nav-arrow,.sidebar-links-row a::before{display:none;}
  .content-area{display:flex;flex:1 0 auto;min-height:0;overflow:visible;}
  .content-inner{
    display:flex;flex:1 0 auto;min-height:0;overflow:visible;max-width:100%;
    padding:18px calc(16px + env(safe-area-inset-right, 0px)) 0 calc(16px + env(safe-area-inset-left, 0px));
  }
  [data-section="ask"].section-active{display:flex;flex:1 0 auto;}
  .ask-workspace{display:flex;flex:1 0 auto;min-height:0;}
  #chat-container{display:flex;flex:1 0 auto;min-height:0;overflow:visible;padding-bottom:8px;}
  #input-area{
    position:sticky;bottom:0;z-index:10;margin-top:12px;
    background:#D6DFE8;padding:12px 14px calc(12px + env(safe-area-inset-bottom, 0px));
  }
  .example-questions{grid-template-columns:repeat(2,minmax(0,1fr));}
  .example-trigger{min-height:44px;}
  .about-grid{grid-template-columns:minmax(0,1fr);}
  .form-input{min-height:44px;font-size:16px;}
  .submit-btn{min-height:44px;}
  .answer-action{min-height:44px;padding:8px 12px;}
  .message{margin-bottom:12px;}
  .source-list{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));}
  pre{max-width:100%;overflow-x:auto;}
}
@media(max-width:600px){
  .source-list{grid-template-columns:minmax(0,1fr);}
}
/* Landscape phones are wide but very short — they take the mobile flow above
   without matching the narrow-width refinements, so cap source columns here. */
@media(max-height:500px) and (pointer:coarse){
  .source-list{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media(max-width:480px){
  .header-wrap{flex-direction:row;align-items:center;gap:12px;padding:13px 14px 14px;}
  .globe{width:32px;height:32px;}
  .header-copy{min-width:0;}
  .header-h1{font-size:18px;line-height:1.15;}
  .header-subtitle{font-size:11px;line-height:1.25;margin-top:5px;min-height:14px;}
  .section-heading{font-size:19px;}
  #input-area{
    border-top:3px solid #CC8800;
    padding:12px 8px calc(10px + env(safe-area-inset-bottom, 0px));
  }
  .command-feedback{right:8px;bottom:calc(100% + 7px);}
  #input-area form{gap:5px;}
  .form-input{
    min-height:44px;
    padding:7px;
    font-size:16px;
  }
  .submit-btn{
    min-height:44px;
    padding:7px 12px;
    font-size:12px;
  }
  #chat-container{max-width:100%;padding:0 8px 8px;}
  .content-inner{max-width:100%;padding:12px calc(8px + env(safe-area-inset-right, 0px)) 0 calc(8px + env(safe-area-inset-left, 0px));}
  .example-questions{grid-template-columns:minmax(0,1fr);}
  .example-trigger{font-size:14px;padding:8px 10px;}
  pre,.source-link{max-width:100%;}
  button:focus-visible,input:focus-visible,a:focus-visible{outline-offset:0;}
  .page-kicker{font-size:14px;}
  .message{padding:8px;margin-bottom:8px;}
  .sources{margin-top:12px;padding-top:8px;font-size:12px;}
  .source-card{grid-template-columns:auto minmax(0,1fr);}
  .source-service{display:none;}
  .source-link{font-size:12px;}
}

/* ── Large-screen scaling: 1440p at any OS scaling ── */
@media(min-width:1440px){
  body{font-size:17px;}
  .sidebar{width:256px;min-width:240px;}
  .content-inner{max-width:1080px;padding:30px 48px;}
  .header-h1{font-size:26px;}
  .header-subtitle{font-size:13px;}
  .section-heading{font-size:24px;}
  .welcome-intro{font-size:17px;}
  .welcome-examples-title{font-size:15px;}
  .example-trigger{font-size:14px;padding:8px 12px;}
  .message.user{font-size:16px;}
  .message.assistant .answer,
  .answer-rendered{font-size:17px;line-height:1.8;}
  .answer-rendered h3{font-size:20px;}
  .answer-rendered h4{font-size:18px;}
  .answer-rendered h5{font-size:17px;}
  .answer-rendered pre,.answer-rendered code{font-size:14px;}
  .about-body p{font-size:16px;}
  .tech-table td{font-size:15px;}
  .form-input{font-size:17px;min-height:42px;}
  .submit-btn{font-size:14px;min-height:42px;padding:6px 26px;}
  .nav-btn{font-size:13px;padding:11px 16px;}
  .system-status .ss-key{width:76px;}
  .sources{font-size:14px;}
  .source-link{font-size:13px;}
  .assistant-strip{font-size:12px;}
}
/* ── 4K / very large displays ── */
@media(min-width:2400px){
  body{font-size:19px;}
  .sidebar{width:280px;}
  .content-inner{max-width:1260px;padding:36px 56px;}
  .header-h1{font-size:29px;}
  .section-heading{font-size:27px;}
  .welcome-intro{font-size:19px;}
  .message.assistant .answer,
  .answer-rendered{font-size:19px;}
  .answer-rendered h3{font-size:23px;}
  .form-input{font-size:19px;min-height:46px;}
  .submit-btn{font-size:16px;min-height:46px;}
  .about-body p{font-size:18px;}
  .tech-table td{font-size:16px;}
}

/* ── Accessibility: Reduced Motion ── */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* ── Answer Actions ── */
.answer-actions{
  display:flex;
  gap:8px;
  margin-top:8px;
  padding:10px 18px 16px;
  border-top:1px solid #aabbcc;
  font-size:12px;
}

.answer-action{
  padding:4px 8px;
  background:#edf3f8;
  border:1px solid #aabbcc;
  color:#003355;
  cursor:pointer;
  font-family:Verdana,sans-serif;
  font-size:12px;
  border-radius:0;
  transition:background 0.1s;
}

.answer-action:focus-visible{
  outline:2px solid #FFCC00;
  outline-offset:2px;
}

/* Inline-style replacement for sidebar links heading */
.sb-links-title{background:none;border:none;padding:0 0 5px;}