/* bugs-flex-decoder — main.css */
:root{
  --bg-base:#0A1530;--bg-elevated:#0F1B3D;--bg-elevated-2:#142450;
  --border-subtle:rgba(255,255,255,0.06);--border-strong:rgba(255,255,255,0.12);
  --text-primary:#F5F7FA;--text-secondary:#A6B0C7;--text-muted:#6B7592;
  --brand-blue:#00A1E0;--brand-blue-bright:#1B96FF;--brand-navy:#032D60;
  --accent-purple:#7F5BFF;--accent-purple-glow:rgba(127,91,255,0.25);
  --success:#2DD4A4;--warning:#FFB547;--danger:#FF5C5C;
  --gradient-hero:linear-gradient(135deg,#00A1E0 0%,#7F5BFF 100%);
  --gradient-section:radial-gradient(ellipse at top,rgba(0,161,224,0.15),transparent 60%);
  --font-body:'Inter',system-ui,-apple-system,sans-serif;
  --font-display:'Geist',ui-sans-serif,system-ui,sans-serif;
  --font-mono:'Geist Mono',ui-monospace,'JetBrains Mono',monospace;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg-base);color:var(--text-primary);font-family:var(--font-body);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
a{color:var(--brand-blue-bright);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4,h5{font-family:var(--font-display);font-weight:700;letter-spacing:-0.02em;color:var(--text-primary);margin:0}
h1{font-size:clamp(48px,7vw,96px);line-height:0.95}
h2{font-size:clamp(32px,4vw,52px);line-height:1.1;margin-bottom:16px}
h3{font-size:24px;line-height:1.3}
h4{font-size:18px;line-height:1.4}
.mono{font-family:var(--font-mono)}
.eyebrow{font-size:12px;letter-spacing:0.14em;text-transform:uppercase;color:var(--brand-blue-bright);font-weight:600}
.muted{color:var(--text-muted)}
.secondary{color:var(--text-secondary)}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
button.btn-primary{background:var(--brand-blue);color:#fff;padding:14px 24px;border-radius:8px;font-weight:600;height:56px;transition:background .15s}
button.btn-primary:hover{background:var(--brand-blue-bright)}
button.btn-ghost{background:transparent;border:1px solid var(--border-strong);color:var(--text-primary);padding:14px 24px;border-radius:8px;font-weight:500;height:56px;transition:border-color .15s,background .15s}
button.btn-ghost:hover{border-color:var(--brand-blue-bright);background:rgba(255,255,255,0.02)}
.container{max-width:1280px;margin:0 auto;padding:0 32px}
@media(max-width:720px){.container{padding:0 20px}}

/* NAV */
nav.top{position:sticky;top:0;z-index:100;background:rgba(10,21,48,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-subtle)}
nav.top .nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 32px;max-width:1280px;margin:0 auto}
nav.top .brand{font-family:var(--font-display);font-weight:700;font-size:18px;color:var(--text-primary)}
nav.top .brand .dot{display:inline-block;width:8px;height:8px;background:var(--brand-blue);border-radius:50%;margin-right:10px;vertical-align:middle}
nav.top .nav-links{display:flex;gap:28px;font-size:14px}
nav.top .nav-links a{color:var(--text-secondary)}
nav.top .nav-links a:hover{color:var(--text-primary);text-decoration:none}
@media(max-width:720px){nav.top .nav-links{display:none}}

/* HERO */
section.hero{position:relative;min-height:88vh;padding:120px 0 80px;overflow:hidden;background:var(--bg-base)}
section.hero::before{content:'';position:absolute;inset:0;background:var(--gradient-section);pointer-events:none}
section.hero::after{content:'';position:absolute;top:-200px;right:-200px;width:60vw;height:60vw;background:radial-gradient(circle,var(--accent-purple-glow),transparent 60%);filter:blur(80px);pointer-events:none}
section.hero .hero-grid{position:relative;display:grid;grid-template-columns:1.4fr 1fr;gap:60px;align-items:center;z-index:2}
@media(max-width:920px){section.hero .hero-grid{grid-template-columns:1fr}}
section.hero h1{max-width:14ch;margin-top:24px;margin-bottom:24px}
section.hero p.sub{font-size:clamp(18px,2vw,22px);color:var(--text-secondary);max-width:56ch;line-height:1.5;margin:0 0 36px}
section.hero .cta{display:flex;gap:16px;flex-wrap:wrap}
section.hero .hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:48px;max-width:520px}
section.hero .stat{padding:20px;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:12px}
section.hero .stat .num{font-family:var(--font-mono);font-size:28px;font-weight:600;color:var(--accent-purple)}
section.hero .stat .lbl{font-size:13px;color:var(--text-muted);margin-top:4px}
section.hero .bugs-corner{position:absolute;bottom:40px;right:5vw;display:flex;align-items:flex-end;gap:14px;z-index:3}
section.hero .bugs-corner .bubble{background:var(--bg-elevated);border:1px solid var(--border-subtle);padding:10px 14px;border-radius:14px 14px 4px 14px;font-size:13px;color:var(--text-secondary);max-width:240px}
section.hero .bugs-corner svg{transform:rotate(-6deg)}
@media(max-width:920px){section.hero .bugs-corner{display:none}}
.scroll-cue{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);font-size:11px;color:var(--text-muted);letter-spacing:0.16em;text-transform:uppercase;animation:bob 2s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(6px)}}

/* SECTION (generic) */
section.block{padding:100px 0;position:relative}
section.block.alt{background:linear-gradient(180deg,var(--bg-base) 0%,#0c1838 100%)}
section.block .head{margin-bottom:48px;max-width:760px}
section.block .head .eyebrow{margin-bottom:14px;display:block}
section.block .head .desc{color:var(--text-secondary);font-size:18px;margin-top:14px;line-height:1.55}

/* TLDR cards */
.tldr-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.tldr-card{padding:24px;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:14px;transition:border-color .2s,transform .2s}
.tldr-card:hover{border-color:var(--brand-blue-bright);transform:translateY(-2px)}
.tldr-card .num{font-family:var(--font-mono);font-size:13px;color:var(--brand-blue-bright);font-weight:600;margin-bottom:10px;letter-spacing:0.05em}
.tldr-card h4{margin-bottom:10px}
.tldr-card p{color:var(--text-secondary);font-size:14.5px;margin:0;line-height:1.55}

/* CALCULATOR */
.calc-wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:start}
@media(max-width:1100px){.calc-wrap{grid-template-columns:1fr}}
.calc-inputs{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:18px;padding:28px}
.calc-inputs .group{margin-bottom:22px}
.calc-inputs .group:last-child{margin-bottom:0}
.calc-inputs label{display:block;font-size:11px;letter-spacing:0.12em;text-transform:uppercase;color:var(--text-muted);font-weight:600;margin-bottom:8px}
.calc-inputs .row{display:flex;align-items:center;gap:12px}
.calc-inputs select,.calc-inputs input[type=number]{font-family:var(--font-mono);background:var(--bg-elevated-2);color:var(--text-primary);border:1px solid var(--border-subtle);border-radius:8px;padding:10px 12px;font-size:15px;width:100%;outline:none;transition:border-color .15s}
.calc-inputs select:focus,.calc-inputs input[type=number]:focus{border-color:var(--brand-blue-bright)}
.calc-inputs input[type=range]{flex:1;-webkit-appearance:none;appearance:none;height:4px;background:var(--bg-elevated-2);border-radius:2px;outline:none}
.calc-inputs input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;background:#fff;border:2px solid var(--brand-blue);border-radius:50%;cursor:pointer;transition:transform .1s}
.calc-inputs input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.15)}
.calc-inputs input[type=range]::-moz-range-thumb{width:18px;height:18px;background:#fff;border:2px solid var(--brand-blue);border-radius:50%;cursor:pointer}
.calc-inputs .num-val{font-family:var(--font-mono);font-size:14px;color:var(--text-primary);min-width:88px;text-align:right;background:var(--bg-elevated-2);padding:6px 10px;border-radius:6px}
.calc-inputs .unit{font-size:12px;color:var(--text-muted);min-width:80px}
.calc-inputs .toggles{display:flex;gap:8px;flex-wrap:wrap}
.calc-inputs .toggle{padding:8px 14px;background:var(--bg-elevated-2);border:1px solid var(--border-subtle);border-radius:8px;cursor:pointer;font-size:13px;color:var(--text-secondary);transition:all .15s}
.calc-inputs .toggle.active{background:var(--brand-blue);color:#fff;border-color:var(--brand-blue)}
.calc-inputs .preset-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.calc-inputs .preset{padding:6px 12px;background:var(--bg-elevated-2);border:1px solid var(--border-subtle);border-radius:6px;cursor:pointer;font-size:12px;color:var(--text-secondary);transition:all .15s}
.calc-inputs .preset:hover{border-color:var(--brand-blue-bright);color:var(--text-primary)}

.calc-results{position:sticky;top:80px;background:var(--bg-elevated-2);border:1px solid var(--border-subtle);border-radius:18px;padding:32px}
@media(max-width:1100px){.calc-results{position:static}}
.calc-results .winner-badge{display:inline-block;padding:5px 12px;background:rgba(127,91,255,0.15);color:var(--accent-purple);border:1px solid var(--accent-purple);border-radius:999px;font-size:11px;font-weight:600;letter-spacing:0.06em;margin-bottom:14px}
.calc-results .big-num{font-family:var(--font-display);font-size:clamp(56px,8vw,88px);font-weight:700;color:var(--accent-purple);line-height:1;margin:6px 0;letter-spacing:-0.03em}
.calc-results .big-num-label{font-size:11px;letter-spacing:0.12em;text-transform:uppercase;color:var(--text-muted);font-weight:600}
.calc-results .monthly{color:var(--text-secondary);font-size:15px;margin-top:6px}
.calc-results .winner-explain{margin-top:20px;padding:16px;background:rgba(0,161,224,0.07);border-left:3px solid var(--brand-blue);border-radius:6px;font-size:14px;color:var(--text-secondary);line-height:1.5}
.calc-results h4{margin-top:32px;margin-bottom:14px;font-size:13px;letter-spacing:0.1em;text-transform:uppercase;color:var(--text-muted);font-weight:600}
.calc-results .path-row{display:grid;grid-template-columns:1fr auto auto;gap:12px;padding:14px 0;border-bottom:1px solid var(--border-subtle);align-items:baseline;animation:slidein .25s ease both}
.calc-results .path-row:last-child{border-bottom:none}
.calc-results .path-row .name{color:var(--text-primary);font-size:14px;font-weight:500}
.calc-results .path-row .name .tag{font-size:10px;color:var(--text-muted);font-weight:400;display:block;margin-top:2px}
.calc-results .path-row .cost{font-family:var(--font-mono);font-size:15px;font-weight:600;color:var(--text-primary);text-align:right}
.calc-results .path-row .vs{font-size:12px;color:var(--text-muted);text-align:right;min-width:50px}
.calc-results .path-row.win .name{color:var(--accent-purple);font-weight:600}
.calc-results .path-row.win .cost{color:var(--accent-purple)}
@keyframes slidein{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}
.calc-results .compete-table{width:100%;border-collapse:collapse;margin-top:8px;font-size:13px}
.calc-results .compete-table th,.calc-results .compete-table td{padding:10px 8px;text-align:left;border-bottom:1px solid var(--border-subtle)}
.calc-results .compete-table th{color:var(--text-muted);font-weight:500;font-size:11px;text-transform:uppercase;letter-spacing:0.08em}
.calc-results .compete-table td.cost{font-family:var(--font-mono);text-align:right;color:var(--text-primary)}
.calc-results .compete-table tr.sf{color:var(--brand-blue-bright)}

/* DRILL-DOWN SECTIONS (sticky-nav scrollytelling-lite) */
.drill-wrap{display:grid;grid-template-columns:240px 1fr;gap:60px;align-items:start}
@media(max-width:920px){.drill-wrap{grid-template-columns:1fr;gap:24px}}
.drill-nav{position:sticky;top:80px;display:flex;flex-direction:column;gap:4px;font-size:14px}
@media(max-width:920px){.drill-nav{position:static;flex-direction:row;flex-wrap:wrap;gap:8px;overflow-x:auto;padding-bottom:8px}}
.drill-nav a{padding:8px 12px;color:var(--text-muted);border-radius:6px;border-left:2px solid transparent;transition:all .15s}
.drill-nav a:hover{color:var(--text-primary);background:rgba(255,255,255,0.02);text-decoration:none}
.drill-nav a.active{color:var(--brand-blue-bright);border-left-color:var(--brand-blue);background:rgba(0,161,224,0.06)}
@media(max-width:920px){.drill-nav a{border-left:none;border-bottom:2px solid transparent;white-space:nowrap}.drill-nav a.active{border-left:none;border-bottom-color:var(--brand-blue)}}
.drill-content{display:flex;flex-direction:column;gap:80px}
.drill-section{scroll-margin-top:90px}
.drill-section h3{font-size:32px;margin-bottom:12px}
.drill-section .summary{font-size:18px;color:var(--text-secondary);margin-bottom:24px;line-height:1.55}
.drill-section .tldr-callout{padding:18px 20px;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:12px;display:flex;gap:14px;align-items:flex-start;margin-bottom:24px}
.drill-section .tldr-callout .bulb{flex-shrink:0;width:24px;height:24px;color:var(--brand-blue-bright);font-size:20px;line-height:1}
.drill-section .tldr-callout .ct{font-size:15px;color:var(--text-primary);line-height:1.55}
.drill-section .body p{color:var(--text-secondary);margin:0 0 14px;line-height:1.65;font-size:15.5px}
.drill-section .body strong{color:var(--text-primary);font-weight:600}
.drill-section .body code{font-family:var(--font-mono);background:var(--bg-elevated);padding:2px 6px;border-radius:4px;font-size:13px;color:var(--brand-blue-bright)}
.drill-section .body ul{padding-left:22px;color:var(--text-secondary);margin:0 0 14px;line-height:1.65;font-size:15.5px}
.drill-section .body li{margin-bottom:6px}

/* TABLE */
.std-table{width:100%;border-collapse:collapse;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:12px;overflow:hidden;margin:18px 0;font-size:14px}
.std-table thead th{background:var(--bg-elevated-2);text-align:left;padding:14px 16px;font-size:12px;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-muted);font-weight:600}
.std-table tbody td{padding:14px 16px;border-top:1px solid var(--border-subtle);color:var(--text-secondary)}
.std-table tbody tr:nth-child(odd) td{background:rgba(255,255,255,0.012)}
.std-table tbody tr:hover td{background:rgba(255,255,255,0.04)}
.std-table .num{font-family:var(--font-mono);text-align:right;color:var(--text-primary)}
.std-table .check{color:var(--brand-blue-bright);font-weight:600}
.std-table .x{color:var(--text-muted)}

/* GLOSSARY */
.gloss-search{margin-bottom:24px}
.gloss-search input{width:100%;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:10px;padding:14px 18px;color:var(--text-primary);font-size:15px;outline:none}
.gloss-search input:focus{border-color:var(--brand-blue-bright)}
.gloss-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px}
.gloss-card{padding:16px 20px;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:10px;scroll-margin-top:90px}
.gloss-card h5{font-family:var(--font-display);font-size:15px;font-weight:600;color:var(--brand-blue-bright);margin:0 0 6px}
.gloss-card p{font-size:13.5px;color:var(--text-secondary);margin:0;line-height:1.55}

/* OPEN QUESTIONS */
.oq-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.oq-card{padding:20px;background:var(--bg-elevated);border:1px dashed var(--border-strong);border-radius:12px;position:relative}
.oq-card .q-mark{position:absolute;top:14px;right:16px;font-family:var(--font-mono);font-size:18px;color:var(--warning);font-weight:700;background:rgba(255,181,71,0.1);width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center}
.oq-card h5{font-size:15px;font-weight:600;color:var(--text-primary);margin:0 0 8px;padding-right:40px}
.oq-card p{font-size:13.5px;color:var(--text-secondary);margin:0 0 10px;line-height:1.5}
.oq-card .ae-tag{display:inline-block;padding:3px 9px;background:rgba(255,181,71,0.12);color:var(--warning);border-radius:5px;font-size:11px;font-weight:600;letter-spacing:0.04em;text-transform:uppercase}

/* FOOTER */
footer{background:#06102a;border-top:1px solid var(--border-subtle);padding:64px 0 32px;font-size:13.5px}
footer .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;margin-bottom:40px}
footer .grid h6{font-size:11px;letter-spacing:0.12em;text-transform:uppercase;color:var(--text-muted);margin:0 0 14px;font-weight:600}
footer .grid a{display:block;color:var(--text-secondary);margin-bottom:8px;font-size:13.5px}
footer .grid a:hover{color:var(--brand-blue-bright)}
footer .attrib{color:var(--text-muted);font-size:12px;line-height:1.6;border-top:1px solid var(--border-subtle);padding-top:24px;max-width:1000px}
footer .bugs-line{margin-top:18px;color:var(--text-secondary);font-size:13px}

/* CHAT BUBBLE */
.chat-fab{position:fixed;bottom:24px;right:24px;width:60px;height:60px;background:var(--gradient-hero);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 30px rgba(127,91,255,0.4),0 0 0 1px rgba(255,255,255,0.05);z-index:200;transition:transform .2s}
.chat-fab:hover{transform:scale(1.05)}
.chat-fab svg{width:28px;height:28px;color:#fff}
.chat-panel{position:fixed;bottom:96px;right:24px;width:min(400px,calc(100vw - 48px));height:min(560px,calc(100vh - 140px));background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,0.5);display:none;flex-direction:column;z-index:200;overflow:hidden}
.chat-panel.open{display:flex;animation:popin .2s ease}
@keyframes popin{from{opacity:0;transform:translateY(8px) scale(0.97)}to{opacity:1;transform:translateY(0) scale(1)}}
.chat-head{padding:16px 18px;border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between}
.chat-head .title{font-family:var(--font-display);font-weight:600;font-size:15px}
.chat-head .title .dot{display:inline-block;width:8px;height:8px;background:var(--success);border-radius:50%;margin-right:8px;vertical-align:middle}
.chat-head .close{color:var(--text-muted);font-size:20px;cursor:pointer;padding:0 4px}
.chat-body{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:12px}
.chat-msg{padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.5;max-width:85%;word-wrap:break-word;white-space:pre-wrap}
.chat-msg.user{background:var(--brand-blue);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.chat-msg.bot{background:var(--bg-elevated-2);color:var(--text-primary);align-self:flex-start;border-bottom-left-radius:4px}
.chat-msg.bot.thinking::after{content:'▋';color:var(--brand-blue-bright);animation:blink 1s infinite}
@keyframes blink{50%{opacity:0}}
.chat-input{display:flex;gap:8px;padding:14px;border-top:1px solid var(--border-subtle);background:var(--bg-elevated)}
.chat-input input{flex:1;background:var(--bg-elevated-2);border:1px solid var(--border-subtle);border-radius:10px;padding:10px 14px;color:var(--text-primary);font-size:14px;outline:none;font-family:var(--font-body)}
.chat-input input:focus{border-color:var(--brand-blue-bright)}
.chat-input button{background:var(--brand-blue);color:#fff;border-radius:10px;padding:0 16px;font-size:14px;font-weight:600;height:auto}
.chat-input button:disabled{opacity:.5;cursor:not-allowed}
.chat-suggest{display:flex;gap:6px;flex-wrap:wrap;padding:0 14px 12px}
.chat-suggest button{font-size:12px;padding:6px 10px;background:var(--bg-elevated-2);border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-secondary)}
.chat-suggest button:hover{border-color:var(--brand-blue-bright)}