/* ============================================================
   ROOT & RESET
   ============================================================ */
   *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

   :root {
     --bg:       #0b0b0d;
     --bg2:      #111114;
     --bg3:      #18181d;
     --bg4:      #1e1e25;
     --amber:    #dfa020;
     --amber-lo: #6b4b08;
     --amber-hi: #f5b94a;
     --cream:    #eee8d5;
     --muted:    #8a8476;
     --blue:     #4b9de2;
     --blue-lo:  #1b3c5c;
     --green:    #4ec47a;
     --border:   rgba(223,160,32,.15);
     --border2:  rgba(255,255,255,.06);
     --mono:     'IBM Plex Mono', monospace;
     --serif:    'Instrument Serif', Georgia, serif;
     --sans:     'DM Sans', system-ui, sans-serif;
     --ease:     cubic-bezier(.4,0,.2,1);
   }
   
   html { scroll-behavior: smooth; font-size: 16px; overflow-x: hidden; }
   body {
     background: var(--bg);
     color: var(--cream);
     font-family: var(--sans);
     line-height: 1.7;
     -webkit-font-smoothing: antialiased;
   }
   ::selection  { background: var(--amber); color: #000; }
   ::-webkit-scrollbar { width: 3px; }
   ::-webkit-scrollbar-thumb { background: var(--amber-lo); }
   
   /* ============================================================
      LOADING OVERLAY
      ============================================================ */
   #page-loader {
     position: fixed; inset: 0; z-index: 9999;
     background: var(--bg);
     display: flex; align-items: center; justify-content: center;
     transition: opacity .4s var(--ease), visibility .4s;
   }
   #page-loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
   .loader-inner {
     display: flex; flex-direction: column; align-items: center; gap: 1.2rem;
   }
   .loader-logo {
     font-family: var(--mono); font-size: 13px;
     color: var(--amber); letter-spacing: .14em;
   }
   .loader-bar {
     width: 160px; height: 1px;
     background: var(--bg3);
     border-radius: 2px; overflow: hidden;
   }
   .loader-fill {
     height: 100%; width: 0%;
     background: var(--amber);
     animation: loader-grow 1.2s var(--ease) forwards;
   }
   @keyframes loader-grow { to { width: 100%; } }
   
   /* ============================================================
      NAV
      ============================================================ */
   nav {
     position: fixed; top: 0; left: 0; right: 0; z-index: 200;
     display: flex; align-items: center; justify-content: space-between;
     padding: 1rem 4rem;
     background: rgba(11,11,13,.85);
     backdrop-filter: blur(18px);
     border-bottom: .5px solid var(--border);
     transition: padding .3s var(--ease);
   }
   nav.scrolled { padding: .7rem 4rem; }
   .logo {
     font-family: var(--mono); font-size: 12px;
     color: var(--amber); text-decoration: none; letter-spacing: .1em;
   }
   .nav-links { display: flex; gap: 2.4rem; list-style: none; }
   .nav-links a {
     font-family: var(--mono); font-size: 11px;
     color: var(--muted); text-decoration: none;
     letter-spacing: .08em; transition: color .2s;
     position: relative;
   }
   .nav-links a::after {
     content: ''; position: absolute; bottom: -3px; left: 0; right: 0;
     height: 1px; background: var(--amber);
     transform: scaleX(0); transform-origin: left;
     transition: transform .2s var(--ease);
   }
   .nav-links a:hover { color: var(--amber); }
   .nav-links a:hover::after,
   .nav-links a.active::after { transform: scaleX(1); }
   .nav-links a.active { color: var(--amber); }
   
   /* ============================================================
      SECTION BASE
      ============================================================ */
   .sec { padding: 5.5rem 4rem; border-top: .5px solid var(--border); }
   .sec-alt { background: var(--bg2); }
   .eyebrow {
     font-family: var(--mono); font-size: 10px;
     color: var(--amber); letter-spacing: .16em; text-transform: uppercase;
     margin-bottom: .9rem;
     display: flex; align-items: center; gap: .7rem;
   }
   .eyebrow::before { content: ''; width: 22px; height: 1px; background: var(--amber); }
   h2.sec-title {
     font-family: var(--serif);
     font-size: clamp(2rem,4vw,3.2rem);
     font-weight: 400; line-height: 1.1;
     margin-bottom: 3rem;
   }
   
   /* ============================================================
      HERO
      ============================================================ */
   #hero {
     min-height: 100vh; display: flex; flex-direction: column;
     justify-content: flex-end; padding: 9rem 4rem 5rem;
     position: relative; overflow: hidden;
   }
   .grid-bg {
     position: absolute; inset: 0; pointer-events: none;
     background-image:
       linear-gradient(rgba(255,255,255,.032) 1px, transparent 1px),
       linear-gradient(90deg, rgba(255,255,255,.032) 1px, transparent 1px);
     background-size: 56px 56px;
     -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 40%, transparent 100%);
     mask-image:         radial-gradient(ellipse 80% 70% at 50% 40%, #000 40%, transparent 100%);
   }
   .hero-eyebrow {
     font-family: var(--mono); font-size: 11px;
     color: var(--amber); letter-spacing: .16em; text-transform: uppercase;
     margin-bottom: 1.4rem;
     display: flex; align-items: center; gap: .7rem;
     animation: up .6s .05s both;
   }
   .hero-eyebrow::before { content: ''; width: 24px; height: 1px; background: var(--amber); }
   h1.name {
     font-family: var(--serif);
     font-size: clamp(3.6rem,9vw,8rem);
     font-weight: 400; line-height: .95; color: var(--cream);
     animation: up .7s .18s both;
   }
   h1.name em { font-style: italic; color: var(--amber); }
   .hero-desc {
     font-size: clamp(1rem,1.8vw,1.2rem); font-weight: 300;
     color: var(--muted); max-width: 560px; margin-top: 1.6rem;
     line-height: 1.75; animation: up .7s .35s both;
   }
   .hero-cta {
     display: flex; gap: 1rem; margin-top: 2.8rem;
     flex-wrap: wrap; animation: up .7s .5s both;
   }
   .btn {
     font-family: var(--mono); font-size: 11px; letter-spacing: .08em;
     padding: .65rem 1.5rem; border-radius: 3px; text-decoration: none;
     transition: all .2s var(--ease); cursor: pointer; border: none;
     display: inline-block;
   }
   .btn-solid { background: var(--amber); color: #0b0b0d; font-weight: 500; }
   .btn-solid:hover { background: var(--amber-hi); }
   .btn-outline {
     background: transparent; color: var(--muted);
     border: .5px solid rgba(255,255,255,.15);
   }
   .btn-outline:hover { color: var(--cream); border-color: rgba(255,255,255,.35); }
   .hero-aside {
     position: absolute; right: 4rem; bottom: 5.5rem;
     display: flex; flex-direction: column; align-items: flex-end; gap: 2rem;
     animation: fade 1s .8s both;
   }
   .aside-stat { text-align: right; }
   .aside-num {
     font-family: var(--mono); font-size: 2.1rem;
     color: var(--amber); font-weight: 500; line-height: 1;
   }
   .aside-label {
     font-family: var(--mono); font-size: 10px; color: var(--muted);
     letter-spacing: .12em; text-transform: uppercase; margin-top: .3rem;
   }
   
   /* ============================================================
      ABOUT
      ============================================================ */
   .about-grid {
     display: grid; grid-template-columns: 1.2fr 1fr;
     gap: 5rem; align-items: start;
   }
   .about-body { font-size: 1rem; color: var(--muted); line-height: 1.85; }
   .about-body p + p { margin-top: 1.1rem; }
   .about-body strong { color: var(--cream); font-weight: 500; }
   .chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.8rem; }
   .chip {
     font-family: var(--mono); font-size: 10px;
     padding: .28rem .75rem; border-radius: 2px;
     background: var(--bg3); border: .5px solid var(--border2);
     color: var(--muted); letter-spacing: .04em;
   }
   .chip.hi { border-color: var(--amber-lo); color: var(--amber); }
   .info-stack { display: flex; flex-direction: column; gap: 1rem; }
   .info-row {
     background: var(--bg3); border: .5px solid var(--border2);
     border-left: 2px solid var(--amber);
     padding: .9rem 1.1rem; border-radius: 0 4px 4px 0;
   }
   .info-key {
     font-family: var(--mono); font-size: 9px;
     color: var(--amber); letter-spacing: .14em; text-transform: uppercase;
     margin-bottom: .25rem;
   }
   .info-val { font-size: .88rem; color: var(--cream); white-space: pre-line; }
   
   /* ============================================================
      RESEARCH
      ============================================================ */
   .research-content {
     display: grid; grid-template-columns: 1.1fr 1fr;
     gap: 4rem; align-items: start;
   }
   .research-body { font-size: .95rem; color: var(--muted); line-height: 1.82; }
   .research-body p + p { margin-top: 1rem; }
   .research-body strong { color: var(--cream); font-weight: 500; }
   .inline-code {
     font-family: var(--mono); font-size: .82em; color: var(--amber);
     background: rgba(223,160,32,.08); padding: .1rem .35rem; border-radius: 2px;
   }
   .method-grid { display: flex; flex-direction: column; gap: .6rem; margin-top: 1rem; }
   .method-row {
     display: flex; align-items: center; gap: .8rem;
     padding: .65rem 1rem; background: var(--bg3);
     border: .5px solid var(--border2); border-radius: 3px;
     opacity: 0; transform: translateX(16px);
     transition: opacity .4s var(--ease), transform .4s var(--ease);
   }
   .method-row.visible { opacity: 1; transform: translateX(0); }
   .method-num { font-family: var(--mono); font-size: 10px; color: var(--amber); min-width: 20px; }
   .method-name { font-family: var(--mono); font-size: 12px; color: var(--cream); }
   .method-status {
     margin-left: auto; font-family: var(--mono); font-size: 10px;
     padding: .15rem .55rem; border-radius: 2px;
   }
   .ms-b { background: rgba(78,196,122,.1);  color: var(--green); }
   .ms-i { background: rgba(75,157,226,.1);  color: var(--blue); }
   .ms-w { background: rgba(223,160,32,.1);  color: var(--amber); }
   
   .dataset-row { display: flex; gap: 1rem; margin-top: 1.8rem; }
   .ds-card {
     flex: 1; padding: .85rem 1rem; background: var(--bg3);
     border: .5px solid var(--border2); border-radius: 4px;
   }
   .ds-k {
     font-family: var(--mono); font-size: 10px; color: var(--amber);
     letter-spacing: .1em; text-transform: uppercase; margin-bottom: .3rem;
   }
   .ds-v { font-size: .88rem; color: var(--cream); }
   .ds-sub { font-family: var(--mono); font-size: 10px; color: var(--muted); margin-top: .2rem; }
   .const-block { margin-top: 1.5rem; display: flex; flex-direction: column; gap: .3rem; }
   .const-item {
     font-family: var(--mono); font-size: 11px; color: var(--amber);
     background: rgba(223,160,32,.06); padding: .4rem .8rem; border-radius: 2px;
   }
   
   /* ============================================================
      PROJECTS
      ============================================================ */
   .projects-grid {
     display: grid;
     grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
     gap: 1.4rem;
   }
   .p-card {
     background: var(--bg2); border: .5px solid var(--border2);
     border-top: 2px solid transparent; border-radius: 4px; padding: 1.5rem;
     transition: border-top-color .2s, border-color .2s, transform .2s var(--ease);
     position: relative; overflow: hidden;
     cursor: default;
   }
   .p-card:hover { border-top-color: var(--amber); border-color: var(--border); transform: translateY(-2px); }
   .card-top {
     display: flex; justify-content: space-between; align-items: flex-start;
     margin-bottom: 1rem;
   }
   .c-tag {
     font-family: var(--mono); font-size: 10px; color: var(--amber);
     background: rgba(223,160,32,.1); padding: .22rem .65rem;
     border-radius: 2px; letter-spacing: .06em;
   }
   .badge {
     font-family: var(--mono); font-size: 10px;
     padding: .22rem .65rem; border-radius: 2px; letter-spacing: .05em;
   }
   .ba { background: rgba(75,157,226,.12);  color: var(--blue); }
   .br { background: rgba(223,160,32,.1);   color: var(--amber); }
   .bl { background: rgba(78,196,122,.1);   color: var(--green); }
   .p-title { font-family: var(--serif); font-size: 1.3rem; margin-bottom: .65rem; line-height: 1.25; }
   .p-body { font-size: .86rem; color: var(--muted); line-height: 1.7; margin-bottom: 1.1rem; }
   .p-tags { display: flex; flex-wrap: wrap; gap: .4rem; }
   .p-tag {
     font-family: var(--mono); font-size: 10px; color: var(--muted);
     border: .5px solid var(--border2); padding: .18rem .55rem; border-radius: 2px;
   }
   
   /* ============================================================
      HOMELAB
      ============================================================ */
   .hl-layout { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 1rem; }
   .hl-access { display: flex; gap: .9rem; flex-wrap: wrap; }
   .access-pill {
     font-family: var(--mono); font-size: 11px; padding: .45rem 1rem;
     border-radius: 3px; border: .5px solid; display: flex; align-items: center; gap: .5rem;
   }
   .ap-live   { border-color: rgba(78,196,122,.3);  background: rgba(78,196,122,.06);  color: var(--green); }
   .ap-vpn    { border-color: var(--blue-lo);        background: rgba(75,157,226,.06);  color: var(--blue); }
   .ap-tunnel { border-color: var(--amber-lo);       background: rgba(223,160,32,.06);  color: var(--amber); }
   .pulse {
     width: 6px; height: 6px; border-radius: 50%; background: currentColor;
     animation: blink 2s ease infinite; flex-shrink: 0;
   }
   .hl-nodes { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
   .node {
     background: var(--bg3); border: .5px solid var(--border2);
     border-radius: 6px; overflow: hidden;
   }
   .node-hd {
     background: rgba(223,160,32,.06); border-bottom: .5px solid var(--border);
     padding: .75rem 1.1rem; display: flex; align-items: center; gap: .7rem;
   }
   .dot {
     width: 7px; height: 7px; border-radius: 50%;
     background: var(--amber); box-shadow: 0 0 7px rgba(223,160,32,.5);
     flex-shrink: 0;
   }
   .dot.b { background: var(--blue); box-shadow: 0 0 7px rgba(75,157,226,.5); }
   .node-nm { font-family: var(--mono); font-size: 12px; color: var(--amber); font-weight: 500; letter-spacing: .07em; }
   .node-nm.b { color: var(--blue); }
   .node-ip { font-family: var(--mono); font-size: 10px; color: var(--muted); margin-left: auto; }
   .node-bd { padding: 1rem 1.1rem; }
   .spec { display: flex; gap: .5rem; margin-bottom: .3rem; align-items: baseline; }
   .spec-k {
     font-family: var(--mono); font-size: 10px; color: var(--amber-lo);
     min-width: 56px; letter-spacing: .05em; flex-shrink: 0;
   }
   .spec-k.b { color: var(--blue-lo); }
   .spec-v { font-size: .82rem; color: var(--muted); }
   .svc-list {
     display: flex; flex-wrap: wrap; gap: .35rem;
     margin-top: .8rem; padding-top: .8rem; border-top: .5px solid var(--border2);
   }
   .svc {
     font-family: var(--mono); font-size: 10px; color: var(--muted);
     background: rgba(255,255,255,.035); border: .5px solid var(--border2);
     padding: .18rem .5rem; border-radius: 2px;
   }
   .hl-storage {
     display: grid; grid-template-columns: repeat(4, 1fr);
     background: var(--bg3); border: .5px solid var(--border2);
     border-radius: 6px; overflow: hidden;
   }
   .st-cell { padding: 1.1rem 1.3rem; border-right: .5px solid var(--border2); }
   .st-cell:last-child { border-right: none; }
   .st-k {
     font-family: var(--mono); font-size: 10px; color: var(--amber);
     letter-spacing: .1em; text-transform: uppercase; margin-bottom: .35rem;
   }
   .st-v { font-family: var(--mono); font-size: 1.5rem; color: var(--cream); line-height: 1; }
   .st-sub { font-size: .78rem; color: var(--muted); margin-top: .25rem; }
   
   .stack-sec-title {
     font-family: var(--mono); font-size: 10px; color: var(--muted);
     letter-spacing: .12em; text-transform: uppercase; margin-bottom: .8rem;
   }
   .stack-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: .5rem; }
   .stack-chip {
     font-family: var(--mono); font-size: 10px; padding: .3rem .65rem;
     border: .5px solid var(--border2); border-radius: 2px;
     color: var(--muted); text-align: center; background: var(--bg3);
     transition: border-color .2s, color .2s;
   }
   .stack-chip:hover { border-color: var(--border); color: var(--cream); }
   .stack-chip.a { border-color: var(--amber-lo); color: var(--amber); }
   .stack-chip.b { border-color: var(--blue-lo);  color: var(--blue); }
   .stack-chip.c { border-color: rgba(78,196,122,.25); color: var(--green); }
   
   .arch-notes {
     background: var(--bg3); border: .5px solid var(--border2);
     border-radius: 6px; padding: 1.2rem 1.4rem;
   }
   .arch-notes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
   .arch-note { font-size: .83rem; color: var(--muted); line-height: 1.7; }
   .arch-note strong { color: var(--cream); font-weight: 500; }
   
   /* ============================================================
      EXPERIENCE
      ============================================================ */
   .exp-layout { display: flex; flex-direction: column; }
   .exp-block-label {
     font-family: var(--mono); font-size: 10px; color: var(--amber);
     letter-spacing: .16em; text-transform: uppercase;
     margin-bottom: 1.2rem; display: flex; align-items: center; gap: .7rem;
   }
   .exp-block-label::before { content: ''; width: 18px; height: 1px; background: var(--amber); }
   
   .exp-card {
     background: var(--bg2); border: .5px solid var(--border2);
     border-left: 2px solid var(--amber); border-radius: 0 6px 6px 0;
     padding: 1.4rem 1.6rem; margin-bottom: 1.2rem;
     transition: border-color .2s;
   }
   .exp-card:hover { border-color: var(--border); border-left-color: var(--amber-hi); }
   .exp-card-head { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: .6rem; }
   .exp-role { font-family: var(--serif); font-size: 1.25rem; color: var(--cream); line-height: 1.2; }
   .exp-org  { font-family: var(--mono); font-size: 11px; color: var(--amber); }
   .exp-period { font-family: var(--mono); font-size: 10px; color: var(--muted); margin-left: auto; }
   .exp-summary { font-size: .88rem; color: var(--muted); line-height: 1.75; margin-bottom: 1rem; }
   .exp-stack { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.1rem; }
   .exp-stack-chip {
     font-family: var(--mono); font-size: 10px; color: var(--blue);
     border: .5px solid var(--blue-lo); background: rgba(75,157,226,.06);
     padding: .18rem .55rem; border-radius: 2px;
   }
   .exp-contributions { display: flex; flex-direction: column; gap: .55rem; }
   .exp-contrib {
     font-size: .85rem; color: var(--muted); line-height: 1.7;
     padding-left: .9rem; border-left: 1px solid var(--bg4);
   }
   .exp-contrib strong { color: var(--cream); font-weight: 500; }
   
   .exp-card.prior { border-left-color: var(--blue); }
   .exp-card.prior:hover { border-left-color: var(--blue); border-color: var(--border); }
   
   /* ============================================================
      SKILLS
      ============================================================ */
   .skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1.2rem; }
   .sg { background: var(--bg2); border: .5px solid var(--border2); border-radius: 4px; padding: 1.2rem; }
   .sg-title {
     font-family: var(--mono); font-size: 10px; color: var(--amber);
     letter-spacing: .12em; text-transform: uppercase; margin-bottom: .9rem;
   }
   .sg-list { list-style: none; display: flex; flex-direction: column; gap: .4rem; }
   .sg-list li {
     font-family: var(--mono); font-size: 11px; color: var(--muted);
     display: flex; align-items: center; gap: .5rem;
   }
   .sg-list li::before { content: '▸'; color: var(--amber-lo); font-size: .65em; }
   
   /* ============================================================
      CONTACT
      ============================================================ */
   #contact { text-align: center; }
   #contact .eyebrow { justify-content: center; }
   #contact .eyebrow::before { display: none; }
   .contact-line {
     font-family: var(--serif); font-style: italic;
     font-size: clamp(1.1rem,2.5vw,1.55rem); color: var(--muted);
     max-width: 520px; margin: 0 auto 2.8rem; line-height: 1.55;
   }
   .contact-links { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
   .c-link {
     font-family: var(--mono); font-size: 11px; color: var(--muted);
     text-decoration: none; padding: .55rem 1.2rem;
     border: .5px solid var(--border2); border-radius: 3px;
     letter-spacing: .08em; transition: all .2s;
   }
   .c-link:hover { color: var(--amber); border-color: var(--amber-lo); }
   
   /* ============================================================
      FOOTER
      ============================================================ */
   footer {
     padding: 1.6rem 4rem;
     border-top: .5px solid var(--border2);
     display: flex; justify-content: space-between; align-items: center;
   }
   .f-copy { font-family: var(--mono); font-size: 10px; color: var(--muted); opacity: .4; letter-spacing: .06em; }
   
   /* ============================================================
      REVEAL
      ============================================================ */
   .reveal {
     opacity: 0; transform: translateY(20px);
     transition: opacity .6s var(--ease), transform .6s var(--ease);
   }
   .reveal.on { opacity: 1; transform: translateY(0); }
   
   /* ============================================================
      TOAST
      ============================================================ */
   .toast {
     position: fixed; bottom: 2rem; left: 50%; transform: translateX(-50%) translateY(10px);
     background: var(--bg3); border: .5px solid var(--border);
     font-family: var(--mono); font-size: 11px; color: var(--amber);
     padding: .6rem 1.2rem; border-radius: 4px;
     opacity: 0; transition: all .3s var(--ease); z-index: 500; pointer-events: none;
   }
   .toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
   
   /* ============================================================
      KEYFRAMES
      ============================================================ */
   @keyframes up   { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
   @keyframes fade { from { opacity:0; } to { opacity:1; } }
   @keyframes blink { 0%,100%{opacity:1} 50%{opacity:.35} }
   
   /* ============================================================
      RESPONSIVE
      ============================================================ */
   @media (max-width: 960px) {
     nav { padding: 1rem 2rem; }
     .sec { padding: 4rem 2rem; }
     #hero { padding: 8rem 2rem 4rem; }
     .hero-aside { display: none; }
     .about-grid,
     .research-content { grid-template-columns: 1fr; gap: 2.5rem; }
     .hl-nodes { grid-template-columns: 1fr; }
     .hl-storage { grid-template-columns: 1fr 1fr; }
     .arch-notes-grid { grid-template-columns: 1fr; }
     footer { flex-direction: column; gap: .4rem; text-align: center; }
   }
   @media (max-width: 600px) {
     .nav-links { display: none; }
     .hl-storage { grid-template-columns: 1fr 1fr; }
     h1.name { font-size: 3rem; }
   }

  /* ============================================================
     CHATBOT WIDGET
     ============================================================ */
  #chat-widget {
    position: fixed; bottom: 2rem; right: 2rem; z-index: 9000;
    display: flex; flex-direction: column; align-items: flex-end; gap: .75rem;
  }

  /* Toggle button */
  #chat-toggle {
    width: 52px; height: 52px; border-radius: 50%;
    background: var(--amber); border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(223,160,32,.35);
    transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .2s;
    flex-shrink: 0;
  }
  #chat-toggle:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 28px rgba(223,160,32,.5);
    background: var(--amber-hi);
  }
  #chat-toggle svg {
    width: 22px; height: 22px; color: #000;
    transition: opacity .2s, transform .2s var(--ease);
  }
  #chat-icon-close { display: none; }
  #chat-widget.open #chat-icon-open  { display: none; }
  #chat-widget.open #chat-icon-close { display: block; }

  /* Chat panel */
  #chat-panel {
    width: 360px;
    background: var(--bg2);
    border: .5px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex; flex-direction: column;
    box-shadow: 0 16px 48px rgba(0,0,0,.55);
    transform-origin: bottom right;
    transform: scale(.85) translateY(12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .28s var(--ease), opacity .25s var(--ease);
    max-height: 520px;
  }
  #chat-widget.open #chat-panel {
    transform: scale(1) translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  /* Header */
  #chat-header {
    padding: 1rem 1.2rem .85rem;
    background: var(--bg3);
    border-bottom: .5px solid var(--border);
    display: flex; flex-direction: column; gap: .2rem;
  }
  .chat-title {
    font-family: var(--mono); font-size: 12px;
    color: var(--amber); letter-spacing: .1em;
    display: flex; align-items: center; gap: .5rem;
  }
  .chat-status-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 6px var(--green);
    animation: blink 2.4s ease-in-out infinite;
  }
  .chat-subtitle {
    font-size: 11px; color: var(--muted);
    font-family: var(--sans);
  }

  /* Messages area */
  #chat-messages {
    flex: 1; overflow-y: auto; padding: 1rem;
    display: flex; flex-direction: column; gap: .75rem;
    scroll-behavior: smooth;
    min-height: 300px;
  }
  #chat-messages::-webkit-scrollbar { width: 3px; }
  #chat-messages::-webkit-scrollbar-thumb { background: var(--amber-lo); border-radius: 2px; }

  .chat-msg { display: flex; }
  .chat-msg.user { justify-content: flex-end; }
  .chat-msg.bot  { justify-content: flex-start; }

  .msg-bubble {
    max-width: 80%;
    padding: .55rem .85rem;
    border-radius: 10px;
    font-size: 13.5px; line-height: 1.55;
    font-family: var(--sans);
  }
  .chat-msg.user .msg-bubble {
    background: var(--amber);
    color: #000;
    border-bottom-right-radius: 3px;
  }
  .chat-msg.bot .msg-bubble {
    background: var(--bg4);
    color: var(--cream);
    border: .5px solid var(--border2);
    border-bottom-left-radius: 3px;
  }

  /* Typing indicator */
  .chat-msg.typing .msg-bubble {
    display: flex; align-items: center; gap: 4px;
    padding: .65rem .85rem;
  }
  .typing-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--muted);
    animation: typing-bounce .9s ease-in-out infinite;
  }
  .typing-dot:nth-child(2) { animation-delay: .15s; }
  .typing-dot:nth-child(3) { animation-delay: .3s; }
  @keyframes typing-bounce {
    0%,80%,100% { transform: translateY(0); opacity: .5; }
    40% { transform: translateY(-5px); opacity: 1; }
  }

  /* Input row */
  #chat-input-row {
    display: flex; align-items: center; gap: .5rem;
    padding: .75rem 1rem;
    border-top: .5px solid var(--border);
    background: var(--bg3);
  }
  #chat-input {
    flex: 1;
    background: var(--bg4); border: .5px solid var(--border2);
    border-radius: 6px; padding: .55rem .8rem;
    color: var(--cream); font-family: var(--sans); font-size: 13px;
    outline: none; transition: border-color .2s;
  }
  #chat-input::placeholder { color: var(--muted); }
  #chat-input:focus { border-color: var(--amber); }

  #chat-send {
    width: 36px; height: 36px; border-radius: 6px;
    background: var(--amber); border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: background .2s, transform .15s;
  }
  #chat-send:hover { background: var(--amber-hi); transform: scale(1.05); }
  #chat-send:disabled { opacity: .45; cursor: not-allowed; transform: none; }
  #chat-send svg { width: 15px; height: 15px; color: #000; }

  /* Error state */
  .msg-bubble.error { color: #e06c6c; background: rgba(224,108,108,.12); border-color: rgba(224,108,108,.25); }

  @media (max-width: 600px) {
    #chat-widget { bottom: 1.2rem; right: 1.2rem; }
    #chat-panel { width: calc(100vw - 2.4rem); }
  }