/* ==========================================================================
   Tech Stacks — shared styles
   Color code used everywhere: cyan = front-end, violet = back-end, amber = database
   ========================================================================== */
:root {
  --bg: #07070d;
  --bg-2: #0e0e18;
  --text: #e8eaf4;
  --muted: #9aa1bb;
  --line: rgba(255, 255, 255, .09);
  --glass: rgba(255, 255, 255, .035);
  --fe: #22d3ee;
  --be: #a78bfa;
  --db: #fbbf24;
  --ok: #34d399;
  --bad: #f87171;
  --pink: #f472b6;
  --radius: 18px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --spring: cubic-bezier(.34, 1.56, .64, 1);
  --font: "Inter", system-ui, sans-serif;
  --display: "Space Grotesk", var(--font);
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--font);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--fe); }
h1, h2, h3, h4 { font-family: var(--display); line-height: 1.1; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.6rem, 7vw, 5.4rem); }
h2 { font-size: clamp(1.9rem, 4.5vw, 3.2rem); }
h3 { font-size: 1.35rem; }
p { margin: 0 0 1em; }
code { font-family: var(--mono); font-size: .88em; background: rgba(255,255,255,.07); padding: .1em .4em; border-radius: 6px; }
::selection { background: var(--be); color: #000; }

/* ---------- Animated background ---------- */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.bg::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask: radial-gradient(ellipse at 50% 0%, #000 10%, transparent 70%);
  animation: grid-pan 24s linear infinite;
}
.bg i { position: absolute; width: 46vmax; height: 46vmax; border-radius: 50%; filter: blur(90px); opacity: .28; animation: orb 22s var(--ease) infinite alternate; }
.bg i:nth-child(1) { background: var(--fe); top: -18vmax; left: -12vmax; }
.bg i:nth-child(2) { background: var(--be); top: 20vh; right: -18vmax; animation-delay: -7s; animation-duration: 26s; }
.bg i:nth-child(3) { background: var(--db); bottom: -24vmax; left: 25vw; opacity: .14; animation-delay: -12s; }
@keyframes grid-pan { to { background-position: 64px 64px; } }
@keyframes orb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(8vw, 6vh) scale(1.15); }
  100% { transform: translate(-6vw, 10vh) scale(.9); }
}

/* ---------- Top progress + nav ---------- */
.progress { position: fixed; top: 0; left: 0; height: 3px; width: 100%; transform-origin: 0 50%; transform: scaleX(0); background: linear-gradient(90deg, var(--fe), var(--be), var(--db)); z-index: 60; }
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 18px;
  padding: 12px clamp(16px, 4vw, 40px);
  background: rgba(7, 7, 13, .72); backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--line);
  animation: drop-in .8s var(--ease) both;
}
.nav .brand { display: flex; align-items: center; gap: 10px; font: 700 1.05rem var(--display); color: var(--text); text-decoration: none; white-space: nowrap; }
.nav .brand b { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: conic-gradient(from 0deg, var(--fe), var(--be), var(--db), var(--fe)); animation: spin 8s linear infinite; }
.nav .brand b::after { content: ""; width: 20px; height: 20px; border-radius: 6px; background: var(--bg); }
.steps { display: flex; gap: 4px; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.steps a {
  display: flex; align-items: center; gap: 8px; white-space: nowrap;
  padding: 7px 12px; border-radius: 999px; font-size: .86rem;
  color: var(--muted); text-decoration: none; transition: color .3s, background .3s;
}
.steps a > span { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; font-size: .72rem; border: 1px solid var(--line); transition: all .4s var(--spring); }
.steps a:hover { color: var(--text); background: var(--glass); }
.steps a.done > span { background: rgba(52, 211, 153, .15); border-color: var(--ok); color: var(--ok); }
.steps a.current { color: #000; background: var(--text); }
.steps a.current > span { background: #000; color: var(--text); border-color: #000; transform: scale(1.1); }
@keyframes drop-in { from { transform: translateY(-100%); opacity: 0; } }
@media (max-width: 640px) { .nav { gap: 10px; } .nav .brand span { display: none; } .steps a.current em { max-width: 96px; text-overflow: ellipsis; } }
@keyframes spin { to { transform: rotate(360deg); } }
.steps a em { max-width: 0; margin-left: -8px; opacity: 0; overflow: hidden; font-style: normal; transition: max-width .5s var(--ease), margin .5s var(--ease), opacity .3s; }
.steps a:hover em, .steps a:focus-visible em, .steps a.current em { max-width: 220px; margin-left: 0; opacity: 1; }

/* ---------- Layout ---------- */
main { overflow-x: clip; }
.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }
section { padding: clamp(60px, 10vw, 120px) 0; position: relative; }
.hero { min-height: calc(100vh - 60px); display: grid; align-items: center; padding-top: 40px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 600 .78rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c, var(--fe)); box-shadow: 0 0 0 0 var(--c, var(--fe)); animation: ping 2s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 10px transparent; } }
.lead { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--muted); max-width: 62ch; }
.center { text-align: center; }
.center .lead { margin-inline: auto; }
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--min, 260px)), 1fr)); }
.split { display: grid; gap: clamp(28px, 5vw, 64px); grid-template-columns: 1fr 1fr; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.fe { --c: var(--fe); } .be { --c: var(--be); } .db { --c: var(--db); } .ok { --c: var(--ok); } .bad { --c: var(--bad); } .pink { --c: var(--pink); }
.tc { color: var(--c); }

/* Gradient text with a moving shimmer */
.grad {
  background: linear-gradient(100deg, var(--fe), var(--be) 35%, var(--pink) 55%, var(--db) 75%, var(--fe));
  background-size: 250% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 8s linear infinite;
}
@keyframes shimmer { to { background-position: -250% 0; } }

/* Split-word headline animation (words wrapped by app.js) */
[data-split] .w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: .08em; }
[data-split] .w > span { display: inline-block; transform: translateY(110%) rotate(6deg); filter: blur(6px); opacity: 0; animation: word-up .9s var(--ease) forwards; animation-delay: calc(var(--i) * 70ms + 150ms); }
@keyframes word-up { to { transform: none; filter: none; opacity: 1; } }

/* Rotating words */
.rotator { display: inline-grid; vertical-align: bottom; }
.rotator > span { grid-area: 1 / 1; opacity: 0; transform: translateY(40%); filter: blur(8px); transition: all .6s var(--ease); white-space: nowrap; }
.rotator > span.on { opacity: 1; transform: none; filter: none; }
.rotator > span.off { opacity: 0; transform: translateY(-40%); }

/* ---------- Scroll reveal ---------- */
[data-reveal] { opacity: 0; transform: translateY(40px); transition: opacity 1s var(--ease), transform 1s var(--ease), filter 1s var(--ease); transition-delay: calc(var(--i, 0) * 90ms); }
[data-reveal="left"] { transform: translateX(-60px); }
[data-reveal="right"] { transform: translateX(60px); }
[data-reveal="zoom"] { transform: scale(.85); }
[data-reveal="blur"] { transform: none; filter: blur(14px); }
[data-reveal].in { opacity: 1; transform: none; filter: none; }

/* ---------- Buttons & chips ---------- */
.btn {
  position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: 999px; border: 1px solid var(--line);
  font: 600 1rem var(--font); color: var(--text); background: var(--glass); text-decoration: none; cursor: pointer;
  transition: transform .4s var(--spring), border-color .3s, background .3s;
}
.btn:hover { transform: translateY(-3px); border-color: rgba(255,255,255,.3); }
.btn:active { transform: scale(.96); }
.btn.primary { color: #000; border: 0; background: linear-gradient(100deg, var(--fe), var(--be)); }
.btn::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, transparent 30%, rgba(255,255,255,.5), transparent 70%); transform: translateX(-100%); transition: transform .8s var(--ease); }
.btn:hover::after { transform: translateX(100%); }
.btn .arrow { transition: transform .4s var(--spring); }
.btn:hover .arrow { transform: translateX(5px); }
.chip { display: inline-flex; align-items: center; gap: 7px; padding: 5px 12px; border-radius: 999px; font-size: .82rem; border: 1px solid color-mix(in srgb, var(--c, #fff) 40%, transparent); background: color-mix(in srgb, var(--c, #fff) 10%, transparent); color: color-mix(in srgb, var(--c, #fff) 80%, #fff); }
.chip img { width: 16px; height: 16px; }
.tag { font: 600 .7rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--c, var(--muted)); }

/* ---------- Cards ---------- */
.card {
  position: relative; padding: 26px; border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  border: 1px solid var(--line);
  transition: transform .5s var(--ease), border-color .4s, box-shadow .5s;
  isolation: isolate;
}
.card::before { /* mouse spotlight, --mx/--my set by app.js */
  content: ""; position: absolute; inset: 0; border-radius: inherit; z-index: -1; opacity: 0; transition: opacity .4s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--c, var(--be)) 22%, transparent), transparent 60%);
}
.card:hover { border-color: color-mix(in srgb, var(--c, #fff) 45%, transparent); box-shadow: 0 30px 60px -30px color-mix(in srgb, var(--c, var(--be)) 50%, transparent); }
.card:hover::before { opacity: 1; }
.card h3 { display: flex; align-items: center; gap: 10px; }
.card p:last-child { margin-bottom: 0; }
.card .ico { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 14px; margin-bottom: 16px; font-size: 1.6rem; background: color-mix(in srgb, var(--c, #fff) 14%, transparent); border: 1px solid color-mix(in srgb, var(--c, #fff) 30%, transparent); transition: transform .6s var(--spring); }
.card:hover .ico { transform: rotate(-8deg) scale(1.12); }
.card .ico img { width: 30px; height: 30px; }
a.card { display: block; color: inherit; text-decoration: none; }
[data-tilt] { transform-style: preserve-3d; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }

/* ---------- Section heading ---------- */
.sh { max-width: 760px; margin-bottom: 48px; }
.sh.center { margin-inline: auto; }
.num { font: 700 .8rem var(--mono); color: var(--c, var(--fe)); letter-spacing: .12em; }

/* ---------- Code windows (built by app.js from <script type="text/code">) ---------- */
.code {
  position: relative; border-radius: 14px; overflow: hidden; min-width: 0;
  background: #0b0b14; border: 1px solid var(--line);
  box-shadow: 0 30px 80px -40px rgba(0,0,0,.9);
}
.code .bar, .term .bar, .win .bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.03); font: .78rem var(--mono); color: var(--muted); }
.code .bar i, .term .bar i, .win .bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.code .bar i:nth-child(2), .term .bar i:nth-child(2), .win .bar i:nth-child(2) { background: #febc2e; } .code .bar i:nth-child(3), .term .bar i:nth-child(3), .win .bar i:nth-child(3) { background: #28c840; }
.code .bar span, .term .bar span, .win .bar span { margin-left: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.copy { margin-left: auto; font: inherit; color: var(--muted); background: none; border: 1px solid var(--line); border-radius: 7px; padding: 3px 10px; cursor: pointer; transition: all .3s; }
.copy:hover { color: var(--text); border-color: var(--muted); }
.copy.did { color: #000; background: var(--ok); border-color: var(--ok); }
.code pre { margin: 0; padding: 18px 20px; overflow-x: auto; font: 13.5px/1.7 var(--mono); tab-size: 2; }
.code pre code { display: block; background: none; padding: 0; font-size: inherit; border-radius: 0; }
.code.in pre { animation: wipe 1.4s var(--ease) both; }
@keyframes wipe { from { clip-path: inset(0 0 100% 0); } to { clip-path: inset(0 0 0 0); } }
.tok-c { color: #6b7394; font-style: italic; }
.tok-s { color: #a5e57a; }
.tok-k { color: #c792ea; }
.tok-n { color: #f78c6c; }
.tok-t { color: #ffcb6b; }
.tok-g { color: #7fdbff; }

/* ---------- Tabs ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; position: relative; }
.tabs button {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border-radius: 12px; cursor: pointer;
  font: 600 .92rem var(--font); color: var(--muted); background: var(--glass); border: 1px solid var(--line);
  transition: all .35s var(--ease);
}
.tabs button img { width: 20px; height: 20px; transition: transform .5s var(--spring); }
.tabs button:hover { color: var(--text); }
.tabs button:hover img { transform: scale(1.25) rotate(-8deg); }
.tabs button.on { color: #000; background: var(--c, var(--text)); border-color: transparent; box-shadow: 0 10px 30px -10px var(--c, #fff); }
[data-panel] { display: none; }
[data-panel].on { display: block; animation: panel-in .7s var(--ease); }
@keyframes panel-in { from { opacity: 0; transform: translateY(24px) scale(.98); filter: blur(6px); } }

/* ---------- Pager ---------- */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding-bottom: 80px; }
.pager a { padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--glass); color: var(--text); text-decoration: none; transition: all .5s var(--ease); }
.pager a:hover { transform: translateY(-6px); border-color: var(--be); }
.pager a small { display: block; color: var(--muted); font-family: var(--mono); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; }
.pager a strong { font: 700 1.5rem var(--display); }
.pager .next { text-align: right; grid-column: 2; }
footer { padding: 30px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; text-align: center; }

/* ---------- Tables ---------- */
.table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.table th, .table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th { font: 600 .75rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.table tbody tr { transition: background .3s; }
.table tbody tr:hover { background: rgba(255,255,255,.03); }
.scroll-x { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.02); }

/* ---------- Callouts ---------- */
.callout { display: flex; gap: 16px; padding: 20px 22px; border-radius: 14px; border: 1px solid color-mix(in srgb, var(--c, var(--db)) 45%, transparent); background: color-mix(in srgb, var(--c, var(--db)) 8%, transparent); }
.callout > b { font-size: 1.4rem; line-height: 1; animation: wobble 2.4s ease-in-out infinite; }
@keyframes wobble { 0%, 100% { transform: rotate(0); } 10% { transform: rotate(-14deg); } 20% { transform: rotate(12deg); } 30% { transform: rotate(0); } }

/* ---------- Meter ---------- */
.meter { height: 8px; border-radius: 8px; background: rgba(255,255,255,.07); overflow: hidden; }
.meter i { display: block; height: 100%; width: 0; border-radius: inherit; background: linear-gradient(90deg, var(--ok), var(--db), var(--bad)); background-size: calc(100% / var(--v)) 100%; transition: width 1.6s var(--ease); }
.on .meter i, .in .meter i { width: calc(var(--v) * 100%); }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; mask: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); padding: 10px 0; }
.marquee > div { display: flex; gap: 14px; width: max-content; animation: marquee 40s linear infinite; }
.marquee.rev > div { animation-direction: reverse; }
.marquee:hover > div { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.marquee .chip { font-size: .95rem; padding: 9px 16px; }
.marquee .chip img { width: 22px; height: 22px; }

/* ---------- Copy burst particles ---------- */
.spark { position: fixed; width: 8px; height: 8px; border-radius: 50%; pointer-events: none; z-index: 100; }

/* ---------- Floating helper ---------- */
.float { animation: float 6s ease-in-out infinite; }
@keyframes float { 50% { transform: translateY(-14px); } }

/* ---------- Vertical stepper ---------- */
.stepper { position: relative; padding-left: 64px; }
.stepper::before { content: ""; position: absolute; left: 23px; top: 0; bottom: 0; width: 2px; background: var(--line); }
.stepper .fill { position: absolute; left: 23px; top: 0; width: 2px; height: calc(var(--p, 0) * 100%); background: linear-gradient(var(--fe), var(--be), var(--db)); box-shadow: 0 0 14px var(--be); }
.step { position: relative; margin-bottom: 56px; }
.step > .dot {
  position: absolute; left: -64px; top: 0; width: 48px; height: 48px; border-radius: 50%;
  display: grid; place-items: center; font: 700 1rem var(--mono);
  background: var(--bg-2); border: 2px solid var(--line); color: var(--muted);
  transition: all .7s var(--spring); transform: scale(.6);
}
.step.in > .dot { transform: none; border-color: var(--c, var(--be)); color: var(--text); box-shadow: 0 0 0 6px color-mix(in srgb, var(--c, var(--be)) 18%, transparent), 0 0 30px var(--c, var(--be)); }
.step h3 { font-size: 1.6rem; padding-top: 8px; }
.step .code { margin: 18px 0; }
@media (max-width: 600px) { .stepper { padding-left: 50px; } .stepper::before, .stepper .fill { left: 17px; } .step > .dot { left: -50px; width: 36px; height: 36px; font-size: .8rem; } }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; filter: none; }
}

/* ---------- SPA pages + curtain transition ---------- */
[data-page]:focus { outline: none; }
.curtain { position: fixed; inset: 0; z-index: 90; pointer-events: none; display: grid; place-items: center; }
.curtain i { position: absolute; inset: 0; transform: scaleX(0); }
.curtain i:nth-child(1) { background: var(--fe); }
.curtain i:nth-child(2) { background: var(--be); }
.curtain i:nth-child(3) { background: var(--bg-2); }
.curtain b { position: relative; font: 700 clamp(2rem, 6vw, 4.5rem) var(--display); letter-spacing: -.03em; opacity: 0; padding: 0 16px; text-align: center; }
.curtain.on { pointer-events: auto; }
.curtain.on b { animation: curtain-label 1.25s var(--ease) both; }
@keyframes curtain-label {
  0%, 25% { opacity: 0; transform: translateY(30px); filter: blur(10px); }
  50%, 62% { opacity: 1; transform: none; filter: none; }
  100% { opacity: 0; transform: translateY(-30px); filter: blur(10px); }
}

/* ==========================================================================
   Page: Start
   ========================================================================== */
/* ---- 3D exploded stack ---- */
.stack3d { height: 520px; perspective: 1400px; display: grid; place-items: center; }
.scene { position: relative; width: 250px; height: 250px; transform-style: preserve-3d; transform: rotateX(58deg) rotateZ(-40deg); animation: sway 12s ease-in-out infinite; }
@keyframes sway { 50% { transform: rotateX(54deg) rotateZ(-28deg); } }
.layer {
  position: absolute; inset: 0; border-radius: 26px; transform-style: preserve-3d;
  background:
    linear-gradient(color-mix(in srgb, var(--c) 18%, transparent) 1px, transparent 1px) 0 0 / 25px 25px,
    linear-gradient(90deg, color-mix(in srgb, var(--c) 18%, transparent) 1px, transparent 1px) 0 0 / 25px 25px,
    color-mix(in srgb, var(--c) 14%, rgba(10,10,20,.85));
  border: 1.5px solid var(--c);
  box-shadow: 0 0 60px -10px var(--c), inset 0 0 40px -10px var(--c);
  transform: translateZ(calc(var(--z) * 1px));
  animation: breathe 5s var(--ease) infinite alternate;
  display: grid; place-items: center; transition: box-shadow .4s;
}
.layer.fe { --z: 190; } .layer.be { --z: 95; animation-delay: -1s; } .layer.db { --z: 0; animation-delay: -2s; }
@keyframes breathe { to { transform: translateZ(calc(var(--z) * 1.35px)); } }
.layer b { font: 700 1.5rem var(--display); color: var(--c); letter-spacing: -.02em; text-shadow: 0 0 20px var(--c); }
.layer .logos { position: absolute; bottom: 18px; display: flex; gap: 10px; }
.layer .logos img { width: 30px; height: 30px; filter: drop-shadow(0 4px 8px rgba(0,0,0,.6)); }
.stack3d:hover .layer { animation-play-state: paused; }
.pk { position: absolute; left: var(--x); top: var(--y); width: 12px; height: 12px; border-radius: 50%; background: #fff; box-shadow: 0 0 16px 4px var(--c); animation: pk 2.6s var(--ease) infinite; animation-delay: var(--d); }
.pk.down { animation-direction: reverse; }
@keyframes pk { 0% { transform: translateZ(0); opacity: 0; } 15%, 85% { opacity: 1; } 100% { transform: translateZ(250px); opacity: 0; } }
.stack-legend { display: flex; justify-content: center; gap: 18px; margin-top: -30px; flex-wrap: wrap; }

/* ---- Famous stacks, layers drop in like blocks ---- */
.stackcard .bricks { display: grid; gap: 8px; margin: 18px 0 14px; }
.brick { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 12px; font-weight: 600; font-size: .92rem;
  background: color-mix(in srgb, var(--c) 12%, transparent); border: 1px solid color-mix(in srgb, var(--c) 40%, transparent);
  opacity: 0; transform: translateY(-60px) rotate(-4deg); }
.brick img { width: 22px; height: 22px; }
.brick small { margin-left: auto; font: 600 .66rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--c); }
.stackcard.in .brick { animation: drop .8s var(--spring) forwards; animation-delay: calc(var(--b) * 140ms + 300ms); }
@keyframes drop { to { opacity: 1; transform: none; } }

/* ---- Journey ---- */
.journey a.card { display: grid; grid-template-columns: auto 1fr auto; gap: 20px; align-items: center; }
.journey .n { font: 700 3rem var(--display); color: transparent; -webkit-text-stroke: 1.5px var(--c); transition: color .4s; line-height: 1; }
.journey a.card:hover .n { color: var(--c); }
.journey .go { font-size: 1.6rem; color: var(--c); transition: transform .5s var(--spring); }
.journey a.card:hover .go { transform: translateX(8px) rotate(-45deg); }
.journey h3 { margin-bottom: .2em; }

.legend .card { text-align: center; }
.legend .swatch { width: 70px; height: 70px; margin: 0 auto 16px; border-radius: 20px; background: var(--c); box-shadow: 0 0 40px var(--c); animation: morph 6s ease-in-out infinite; }
@keyframes morph { 33% { border-radius: 50%; transform: rotate(45deg); } 66% { border-radius: 30% 70% 60% 40%; transform: rotate(-20deg) scale(.9); } }

/* ---------- Language: only the active one is visible ---------- */
html:not([data-lang="en"]) [lang="en"], html[data-lang="en"] [lang="pt"] { display: none !important; }
.lang-toggle {
  position: relative; flex: none; display: grid; grid-template-columns: 1fr 1fr; padding: 3px; border-radius: 999px; cursor: pointer;
  background: var(--glass); border: 1px solid var(--line); font: 700 .75rem var(--mono); color: var(--muted);
}
.lang-toggle::before { content: ""; position: absolute; top: 3px; bottom: 3px; left: 3px; width: calc(50% - 3px); border-radius: 999px; background: linear-gradient(100deg, var(--fe), var(--be)); transition: transform .5s var(--spring); }
html[data-lang="en"] .lang-toggle::before { transform: translateX(100%); }
.lang-toggle span { position: relative; padding: 5px 9px; transition: color .3s; }
html:not([data-lang="en"]) .lang-toggle [data-l="pt"], html[data-lang="en"] .lang-toggle [data-l="en"] { color: #000; }

/* ==========================================================================
   Page: Introduction
   ========================================================================== */
.win { overflow: hidden; border-radius: 18px; background: #0b0b14; border: 1px solid var(--line); box-shadow: 0 40px 100px -40px rgba(167,139,250,.45); }
@keyframes msg-in { from { opacity: 0; transform: translateY(14px) scale(.95); } }

/* Idea → app demo (content comes from INTRO_IDEAS in app.js) */
.g-picks { justify-content: center; }
.g-picks button { position: relative; overflow: hidden; }
.g-picks button::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 3px; background: rgba(0,0,0,.4); transform: scaleX(0); transform-origin: left; }
.g-picks button.hold::after { animation: g-hold var(--hold) linear forwards; }
@keyframes g-hold { to { transform: scaleX(1); } }
.g-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 22px; }
@media (max-width: 860px) { .g-grid { grid-template-columns: 1fr; } }
.g-chat { display: flex; flex-direction: column; }
.g-msgs { flex: 1; display: flex; flex-direction: column; gap: 14px; min-height: 330px; padding: 20px; }
.g-msg { max-width: 90%; padding: 12px 16px; border-radius: 18px; line-height: 1.5; animation: msg-in .5s var(--spring) both; }
.g-msg.me { align-self: flex-end; border-bottom-right-radius: 6px; color: #000; font-weight: 500; background: linear-gradient(135deg, var(--fe), var(--be)); }
.g-msg.me.typing > span::after { content: ""; display: inline-block; width: 2px; height: 1em; margin-left: 2px; vertical-align: middle; background: #000; animation: blink 1s steps(1) infinite; }
.g-msg.ai { align-self: flex-start; border-bottom-left-radius: 6px; background: rgba(255,255,255,.06); border: 1px solid var(--line); }
.g-msg.ai .chip { flex: none; }
.g-msg.ai p { display: flex; gap: 10px; align-items: center; margin: 10px 0 0; font-size: .92rem; color: var(--muted); animation: msg-in .5s var(--spring) both; }
.g-dots { display: flex; gap: 5px; padding: 6px 2px; }
.g-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); animation: g-dot 1s ease-in-out infinite; }
.g-dots i:nth-child(2) { animation-delay: .15s; } .g-dots i:nth-child(3) { animation-delay: .3s; }
@keyframes g-dot { 30% { transform: translateY(-6px); background: var(--text); } }
.g-app { position: relative; }
.g-layer { position: relative; margin: 12px; padding: 12px; border-radius: 14px; border: 1px dashed color-mix(in srgb, var(--c) 35%, transparent); transition: border-color .6s, background .6s, box-shadow .6s; }
.g-tag { display: block; margin-bottom: 8px; font: 600 .66rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--c); }
.g-layer > div { opacity: 0; transform: translateY(10px); filter: blur(6px); transition: all .7s var(--ease); }
.g-layer::after { /* skeleton shimmer until the AI "builds" this layer */
  content: ""; position: absolute; inset: 36px 12px 12px; border-radius: 10px; pointer-events: none; transition: opacity .4s;
  background: linear-gradient(90deg, rgba(255,255,255,.03) 30%, rgba(255,255,255,.1), rgba(255,255,255,.03) 70%) 0 0 / 300% 100%;
  animation: g-skel 1.6s linear infinite;
}
@keyframes g-skel { to { background-position: -300% 0; } }
.g-layer.on { border-style: solid; border-color: color-mix(in srgb, var(--c) 60%, transparent); background: color-mix(in srgb, var(--c) 6%, transparent); box-shadow: 0 0 40px -16px var(--c); }
.g-layer.on > div { opacity: 1; transform: none; filter: none; }
.g-layer.on::after { opacity: 0; }
.g-ui { padding: 12px; border-radius: 12px; background: #fff; color: #111; }
.g-ui > b { display: block; margin-bottom: 4px; font: 700 1rem var(--display); }
.g-item { display: flex; gap: 10px; align-items: center; margin-top: 6px; padding: 7px 10px; border-radius: 10px; background: #f1f2f8; font-size: .88rem; }
.g-item small { margin-left: auto; font-weight: 700; color: #7c3aed; }
.on .g-item { animation: msg-in .6s var(--spring) both; animation-delay: calc(var(--i) * 120ms + 150ms); }
.g-rule { display: flex; gap: 10px; align-items: center; font: 500 .85rem var(--mono); color: color-mix(in srgb, var(--be) 60%, #fff); }
.g-rule b { flex: none; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--ok); color: #000; }
.on .g-rule b { animation: bump .6s var(--spring) .3s both; }
.g-db table { width: 100%; border-collapse: collapse; font: 12px var(--mono); }
.g-db caption { padding-bottom: 4px; text-align: left; font: 700 .8rem var(--display); color: var(--db); }
.g-db th, .g-db td { padding: 4px 8px; text-align: left; border-bottom: 1px solid var(--line); }
.g-db th { color: var(--muted); font-weight: 600; }
.on .g-db tbody tr { animation: row-in .6s var(--spring) both; animation-delay: calc(var(--i) * 140ms + 200ms); }
.g-toast { position: absolute; top: 7px; right: 10px; padding: 4px 12px; border-radius: 999px; background: var(--ok); color: #000; font: 700 .78rem var(--font); opacity: 0; transform: translateY(-8px) scale(.85); transition: all .5s var(--spring); pointer-events: none; }
.g-app.done .g-toast { opacity: 1; transform: none; }

/* Vague vs clear prompt */
.pcompare { padding: 24px; border-radius: 22px; background: var(--glass); border: 1px solid var(--line); }
.pc-switch { justify-content: center; }
.pcompare[data-mode="vague"] [data-pc-show="clear"], .pcompare[data-mode="clear"] [data-pc-show="vague"] { display: none; }
[data-pc-show] { animation: panel-in .6s var(--ease); }
.pcompare[data-mode="vague"] .pc-card { --c: var(--bad); }
.pcompare[data-mode="clear"] .pc-card { --c: var(--ok); }
.pc-card { padding: 22px; border-radius: 18px; background: rgba(0,0,0,.25); border: 1px solid color-mix(in srgb, var(--c) 40%, transparent); box-shadow: 0 30px 60px -40px var(--c); transition: border-color .5s, box-shadow .5s; }
.pc-prompt { margin: 12px 0 0; font: 500 1.15rem/1.9 var(--display); }
.kw { padding: 1px 5px; border-radius: 6px; white-space: nowrap; text-decoration: none; color: color-mix(in srgb, var(--c) 75%, #fff); background: color-mix(in srgb, var(--c) 14%, transparent); border-bottom: 2px solid var(--c); transition: background .3s; }
.kw::after { content: attr(data-n); margin-left: 4px; vertical-align: super; font: 700 .6rem var(--mono); color: var(--c); }
.kw:hover { background: color-mix(in srgb, var(--c) 32%, transparent); }
.pcompare[data-mode="clear"] .kw { animation: kw-in 1.2s var(--ease) .3s backwards; }
@keyframes kw-in { from { background: var(--c); color: #000; } }
.pc-out { list-style: none; display: grid; gap: 8px; margin: 12px 0 20px; padding: 0; }
.pc-out li { display: flex; gap: 10px; padding: 10px 12px; border-radius: 12px; background: color-mix(in srgb, var(--c) 9%, transparent); animation: msg-in .5s var(--spring) both; animation-delay: calc(var(--i) * 110ms); }
.pc-meter small { display: block; margin-bottom: 8px; font: 600 .72rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.pcompare[data-mode="vague"] .meter { --v: .92; }
.pcompare[data-mode="clear"] .meter { --v: .12; }

/* Myth or truth: reuses the flip cards; the front stays neutral so it doesn't give the answer away */
.myths .flip { height: 260px; }
.myths .face { padding: 22px; }
.myths .face:not(.back) { --c: var(--be); overflow: hidden; }
.myths .face:not(.back)::before { content: "?"; position: absolute; right: -10px; bottom: -50px; font: 700 12rem/1 var(--display); color: var(--be); opacity: .08; pointer-events: none; }
.myths .face p { margin: 0; font: 600 1.15rem/1.4 var(--display); }
.myths .face b { font-size: 2.2rem; }
.myths .face.back p { font: .95rem/1.55 var(--font); color: var(--muted); }
.lookout .tryme { margin-top: 4px; }

/* What's coming: the shared .stepper, zig-zag on wide screens */
.trail .step {
  display: grid; grid-template-columns: 150px 1fr; gap: 20px; align-items: center; margin-bottom: 28px; padding: 20px; border-radius: 20px;
  color: inherit; text-decoration: none; background: var(--glass); border: 1px solid color-mix(in srgb, var(--c) 30%, transparent);
  transition: opacity 1s var(--ease), transform .6s var(--ease), border-color .4s, box-shadow .5s;
}
.trail .step:hover { transform: translateY(-4px); border-color: var(--c); box-shadow: 0 30px 60px -30px var(--c); }
.trail .step h3 { margin-bottom: .3em; padding: 0; font-size: 1.35rem; }
.trail .step p { margin-bottom: 10px; font-size: .95rem; }
.trail .row { gap: 6px; }
.trail .chip { font-size: .74rem; }
@media (min-width: 861px) {
  .trail { padding-left: 0; }
  .trail::before, .trail .fill { left: calc(50% - 1px); }
  .trail .step { width: calc(50% - 48px); }
  .trail .step + .step { margin-top: -70px; }
  .trail .step:nth-of-type(even) { margin-left: auto; }
  .trail .step > .dot { left: auto; right: -72px; top: calc(50% - 24px); }
  .trail .step:nth-of-type(even) > .dot { left: -72px; right: auto; }
}
@media (max-width: 600px) { .trail .step { grid-template-columns: 1fr; } }

/* Mini previews of each page, pure CSS */
.mini { position: relative; height: 110px; overflow: hidden; border-radius: 14px; background: #0b0b14; border: 1px solid color-mix(in srgb, var(--c) 30%, transparent); }
.mini-xray i { position: absolute; inset: 0; }
.mini-xray i:first-child { background: repeating-linear-gradient(transparent 0 12px, color-mix(in srgb, var(--be) 55%, transparent) 12px 15px) 14px 4px / 70% 100% no-repeat; }
.mini-xray i:last-child {
  background: linear-gradient(135deg, var(--fe), var(--be)) 12px 12px / 46% 40px no-repeat, linear-gradient(#d9dbe8, #d9dbe8) 12px 62px / 64% 8px no-repeat,
    linear-gradient(#d9dbe8, #d9dbe8) 12px 78px / 44% 8px no-repeat, #fff;
  animation: mini-cut 4s var(--ease) infinite;
}
.mini-xray::after { content: ""; position: absolute; top: 0; bottom: 0; width: 2px; background: #fff; box-shadow: 0 0 12px var(--fe); animation: mini-line 4s var(--ease) infinite; }
@keyframes mini-cut { 0%, 100% { clip-path: inset(0 75% 0 0); } 50% { clip-path: inset(0 15% 0 0); } }
@keyframes mini-line { 0%, 100% { left: 25%; } 50% { left: 85%; } }
/* HTML → + CSS → + JS, one third of the loop each */
.mini-layers i { position: absolute; inset: 14px 38px 32px; border: 1px dashed #8a8fa8; border-radius: 3px; animation: mini-card 4.5s infinite; }
@keyframes mini-card {
  0%, 30% { background: transparent; }
  34%, 64% { background: linear-gradient(135deg, var(--fe), var(--be)); border-color: transparent; border-radius: 12px; }
  68%, 100% { background: linear-gradient(135deg, var(--fe), var(--be)); border-color: transparent; border-radius: 12px; box-shadow: 0 0 0 4px rgba(244,114,182,.45), 0 0 26px var(--pink); }
}
.mini-layers b { position: absolute; left: 0; right: 0; bottom: 8px; text-align: center; font: 700 .7rem var(--mono); letter-spacing: .1em; color: var(--c); opacity: 0; animation: mini-label 4.5s infinite; }
.mini-layers b:nth-of-type(2) { animation-delay: -3s; } .mini-layers b:nth-of-type(3) { animation-delay: -1.5s; }
@keyframes mini-label { 0%, 30% { opacity: 1; } 33%, 100% { opacity: 0; } }
.mini-term { padding-top: 6px; }
.mini-term i { display: block; width: var(--w); height: 6px; margin: 10px 14px 0; border-radius: 3px; background: var(--lc); animation: mini-type 5s steps(10) infinite backwards; animation-delay: calc(var(--k) * .45s); }
@keyframes mini-type { 0% { width: 0; } 20%, 90% { width: var(--w); opacity: 1; } 100% { width: var(--w); opacity: 0; } }
.mini-table { display: grid; gap: 5px; align-content: start; padding: 8px 12px; }
.mini-table i { height: 14px; border-radius: 4px; background: repeating-linear-gradient(90deg, rgba(255,255,255,.1) 0 28%, transparent 28% 33%); animation: mini-row 4s infinite; }
.mini-table i:first-child { background-color: rgba(251,191,36,.15); animation: none; }
.mini-table i:nth-child(3) { animation-delay: .6s; } .mini-table i:nth-child(4) { animation-delay: 1.2s; } .mini-table i:nth-child(5) { animation-delay: 1.8s; }
@keyframes mini-row { 8%, 30% { background-color: rgba(251,191,36,.4); box-shadow: inset 3px 0 var(--db); } }
.mini-steps { display: flex; align-items: center; justify-content: space-between; padding: 0 16px; }
.mini-steps::before { content: ""; position: absolute; left: 22px; right: 22px; top: calc(50% - 1px); height: 2px; background: var(--line); }
.mini-steps::after { content: ""; position: absolute; z-index: 2; left: 18px; top: calc(50% - 5px); width: 10px; height: 10px; border-radius: 50%; background: #fff; box-shadow: 0 0 14px #fff; animation: mini-run 3s ease-in-out infinite alternate; }
@keyframes mini-run { to { left: calc(100% - 28px); } }
.mini-steps i { position: relative; z-index: 1; width: 14px; height: 14px; border-radius: 50%; background: var(--c); box-shadow: 0 0 12px var(--c); }
.mini-gloss { display: flex; flex-wrap: wrap; align-content: center; justify-content: center; gap: 6px; padding: 10px; }
.mini-gloss span { flex-basis: 100%; height: 24px; padding-left: 10px; border-radius: 999px; font-size: .7rem; line-height: 24px; background: rgba(255,255,255,.07); border: 1px solid var(--line); }
.mini-gloss span::after { content: ""; display: inline-block; width: 2px; height: 11px; margin-left: 6px; vertical-align: middle; background: var(--ok); animation: blink 1s steps(1) infinite; }
.mini-gloss b { padding: 3px 8px; border-radius: 6px; font: 700 .68rem var(--mono); color: #000; background: var(--c); animation: mini-pop 4s var(--spring) infinite backwards; }
.mini-gloss b:nth-of-type(2) { animation-delay: .2s; } .mini-gloss b:nth-of-type(3) { animation-delay: .4s; } .mini-gloss b:nth-of-type(4) { animation-delay: .6s; }
@keyframes mini-pop { 0% { transform: scale(0); } 12%, 85% { transform: none; } 100% { transform: scale(0); } }
.mini-prompt { display: grid; gap: 6px; align-content: center; padding: 0 34px; }
.mini-prompt i { height: 18px; border-radius: 6px; background: color-mix(in srgb, var(--c) 30%, transparent); border: 1px solid var(--c); animation: mini-drop 4s var(--spring) infinite backwards; }
.mini-prompt i:nth-child(2) { animation-delay: .25s; } .mini-prompt i:nth-child(3) { animation-delay: .5s; }
@keyframes mini-drop { 0% { transform: translateY(-90px); opacity: 0; } 15%, 85% { transform: none; opacity: 1; } 100% { opacity: 0; } }
.mini-prompt::after { content: "✓"; position: absolute; right: 8px; bottom: 8px; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; font-weight: 800; color: #000; background: var(--ok); animation: mini-ok 4s var(--spring) infinite; }
@keyframes mini-ok { 0%, 45% { transform: scale(0); } 55%, 85% { transform: none; } 100% { transform: scale(0); } }

/* ==========================================================================
   Page: Front vs Back
   ========================================================================== */
/* X-ray slider: drag to see the back-end behind the UI */
@property --cut { syntax: '<percentage>'; inherits: true; initial-value: 55%; }
.xray { position: relative; height: 440px; border-radius: 22px; overflow: hidden; border: 1px solid var(--line); margin-top: 24px; box-shadow: 0 40px 120px -40px rgba(167,139,250,.55); }
.xray.in:not(.touched) { animation: peek 3.4s var(--ease) .5s both; }
@keyframes peek { 0% { --cut: 100%; } 45% { --cut: 15%; } 100% { --cut: 55%; } }
.xray-back { position: absolute; inset: 0; background: radial-gradient(circle at 80% 20%, rgba(167,139,250,.25), transparent 50%), #0b0918; }
.xray-back::after { content: ""; position: absolute; left: 0; right: 0; top: -90px; height: 90px; background: linear-gradient(transparent, rgba(167,139,250,.16), transparent); animation: scan 4s linear infinite; pointer-events: none; }
@keyframes scan { to { transform: translateY(640px); } }
/* The back layer reuses the shop layout so every card lines up with its "x-ray" */
.shop.xr { background: none; color: #cfc8f5; font-family: var(--mono); }
.xr .shop-nav, .xr .shop-card { background: rgba(167,139,250,.06); border: 1px dashed rgba(167,139,250,.45); box-shadow: none; color: #cfc8f5; }
.xr .shop-nav b { color: #fff; font-weight: 600; }
.xr .shop-card .pic { background: rgba(0,0,0,.35); font-size: .78rem; line-height: 1.7; place-items: center start; padding: 0 12px; color: #a5e57a; }
.xr .shop-card b { font-weight: 400; font-size: .8rem; color: var(--ok); }
.xr .shop-card > span { font-size: .78rem; font-weight: 600; }
.xr .shop-card button { background: none; border: 1px dashed var(--fe); color: var(--fe); font: 600 .75rem var(--mono); }
.xr-note { margin: 18px 4px 0; font-size: .8rem; color: var(--muted); }
.cursor { display: inline-block; width: 8px; height: 1.1em; vertical-align: middle; background: var(--be); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.gears { position: absolute; right: 30px; bottom: 16px; font-size: 96px; line-height: 1; color: rgba(167,139,250,.28); }
.gears span { display: inline-block; animation: spin 8s linear infinite; }
.gears span:nth-child(2) { font-size: 62px; margin-left: -14px; animation: spin 5.3s linear infinite reverse; }
.xray-front { position: absolute; inset: 0; clip-path: inset(0 calc(100% - var(--cut)) 0 0); }
.xray-handle { position: absolute; top: 0; bottom: 0; left: var(--cut); width: 3px; margin-left: -1.5px; background: #fff; box-shadow: 0 0 20px var(--fe), 0 0 40px var(--be); pointer-events: none; }
.xray-handle span { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; background: #fff; color: #000; font-weight: 700; box-shadow: 0 10px 30px rgba(0,0,0,.45); }
.xray:has(input:focus-visible) .xray-handle span { outline: 3px solid var(--fe); outline-offset: 3px; }
.xray input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }
.xray-tag { position: absolute; font: 700 .72rem var(--mono); letter-spacing: .12em; text-transform: uppercase; padding: 6px 12px; border-radius: 999px; background: var(--c); color: #000; }
.xray-front .xray-tag { left: 18px; bottom: 18px; }
.xray-back .xray-tag { right: 18px; top: 18px; }
.shop { height: 100%; padding: 22px; color: #111; background: linear-gradient(#fff, #eceef6); }
.shop-nav { display: flex; gap: 20px; align-items: center; padding: 12px 18px; border-radius: 14px; background: #fff; color: #555; font-size: .9rem; box-shadow: 0 4px 18px rgba(0,0,0,.06); }
.shop-nav b { color: #111; margin-right: auto; }
.shop-nav .cart { background: #111; color: #fff; padding: 4px 12px; border-radius: 999px; }
.shop-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 22px; }
.shop-card { display: grid; gap: 4px; padding: 14px; border-radius: 16px; background: #fff; box-shadow: 0 12px 30px -12px rgba(0,0,0,.18); }
.shop-card .pic { height: 150px; border-radius: 12px; display: grid; place-items: center; font-size: 3.2rem; background: linear-gradient(135deg, hsl(var(--h) 90% 88%), hsl(calc(var(--h) + 50) 90% 78%)); }
.shop-card > span { color: #7c3aed; font-weight: 700; }
.shop-card button { margin-top: 6px; padding: 9px; border: 0; border-radius: 10px; background: #111; color: #fff; font: 600 .85rem var(--font); }
@media (max-width: 700px) {
  .shop { padding: 12px; } .shop-nav > span:not(.cart) { display: none; }
  .shop-grid { gap: 8px; } .shop-card { padding: 8px; font-size: .8rem; } .shop-card .pic { height: 80px; font-size: 2rem; }
  .xr .shop-card .pic { font-size: .6rem; padding: 0 6px; } .xr .shop-card > span, .xr .shop-card b { font-size: .62rem; } .gears { display: none; }
}

/* Restaurant */
.resto { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.station { position: relative; text-align: center; padding: 22px 16px; border-radius: 18px; background: var(--glass); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); }
.station .em { position: relative; z-index: 3; width: 84px; height: 84px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center; font-size: 2.4rem; background: color-mix(in srgb, var(--c) 16%, var(--bg)); border: 2px solid var(--c); box-shadow: 0 0 30px -5px var(--c); animation: float 4s ease-in-out infinite; }
.station:nth-child(3) .em { animation-delay: -1s; } .station:nth-child(4) .em { animation-delay: -2s; } .station:nth-child(5) .em { animation-delay: -3s; }
.station b { display: block; font: 700 1.2rem var(--display); }
.station small { color: var(--c); font: 600 .72rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.station p { color: var(--muted); font-size: .9rem; margin: 10px 0 0; }
.track { position: absolute; z-index: 2; left: 12.5%; right: 12.5%; top: 64px; height: 2px; background: repeating-linear-gradient(90deg, rgba(255,255,255,.3) 0 10px, transparent 10px 18px); }
.track span { position: absolute; top: -22px; margin-left: -.9em; font-size: 1.8rem; filter: drop-shadow(0 6px 10px rgba(0,0,0,.6)); }
.track .ticket { animation: carry 7s var(--ease) infinite; }
.track .plate { animation: carry-back 7s var(--ease) infinite; }
@keyframes carry { 0% { left: 0; opacity: 0; } 6% { opacity: 1; } 44% { left: 100%; opacity: 1; } 50%, 100% { left: 100%; opacity: 0; } }
@keyframes carry-back { 0%, 50% { left: 100%; opacity: 0; } 56% { opacity: 1; } 94% { left: 0; opacity: 1; } 100% { left: 0; opacity: 0; } }
@media (max-width: 760px) { .resto { grid-template-columns: 1fr 1fr; } .track { display: none; } }

/* Request simulator */
.sim { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: start; }
@media (max-width: 900px) { .sim { grid-template-columns: 1fr; } }
.sim-stage { padding: 26px; border-radius: 20px; border: 1px solid var(--line); background: var(--glass); }
.sim-track { position: relative; display: flex; justify-content: space-between; margin: 34px 0 26px; }
.sim-track::before { content: ""; position: absolute; left: 36px; right: 36px; top: 36px; height: 2px; opacity: .45; background: linear-gradient(90deg, var(--fe), var(--pink), var(--be), var(--db)); }
.sim-node { position: relative; z-index: 1; width: 72px; text-align: center; }
.sim-node > span { display: grid; place-items: center; width: 72px; height: 72px; border-radius: 20px; font-size: 2rem; background: var(--bg-2); border: 2px solid color-mix(in srgb, var(--c) 40%, transparent); transition: all .5s var(--spring); }
.sim-node b { display: block; margin-top: 8px; font-size: .78rem; color: var(--muted); white-space: nowrap; }
.sim-node.active > span { transform: scale(1.15); border-color: var(--c); box-shadow: 0 0 0 6px color-mix(in srgb, var(--c) 20%, transparent), 0 0 40px var(--c); }
.sim-packet { position: absolute; z-index: 2; top: 36px; left: calc(36px + (100% - 72px) * var(--at) / 3); width: 18px; height: 18px; margin: -9px 0 0 -9px; border-radius: 50%; opacity: 0; background: var(--pc, #fff); box-shadow: 0 0 20px 4px var(--pc, #fff); transition: left .9s var(--ease), background .3s, opacity .3s; }
.sim-packet.live { opacity: 1; }
.sim-packet::after { content: attr(data-label); position: absolute; bottom: 48px; left: 50%; transform: translateX(-50%); padding: 3px 8px; border-radius: 6px; font: 700 .7rem var(--mono); white-space: nowrap; background: var(--pc, #fff); color: #000; }
.sim-log { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 8px; counter-reset: s; }
.sim-log li { display: flex; gap: 12px; align-items: flex-start; padding: 10px 14px; border-radius: 12px; font-size: .92rem; color: var(--muted); opacity: .5; border: 1px solid transparent; transition: all .5s var(--ease); }
.sim-log li::before { counter-increment: s; content: counter(s); flex: none; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; font: 700 .72rem var(--mono); border: 1px solid var(--line); }
.sim-log li.now { opacity: 1; color: var(--text); transform: translateX(8px); background: color-mix(in srgb, var(--c) 12%, transparent); border-color: color-mix(in srgb, var(--c) 45%, transparent); }
.sim-log li.done { opacity: .85; }
.sim-log li.done::before { content: "✓"; background: var(--ok); border-color: var(--ok); color: #000; }
.sim-inspector { position: sticky; top: 90px; }
.sim-inspector pre { min-height: 240px; }
.flash { animation: flash .7s var(--ease); }
@keyframes flash { from { background: rgba(167,139,250,.28); } }
.btn:disabled { opacity: .55; cursor: progress; transform: none; }

/* Comparison table */
.table tbody th { color: var(--text); font: 600 .92rem var(--font); text-transform: none; letter-spacing: 0; white-space: nowrap; }

/* Flip cards (HTTP verbs) */
.flip { height: 220px; perspective: 900px; cursor: pointer; outline: none; }
.flip-in { position: relative; height: 100%; transform-style: preserve-3d; transition: transform .9s var(--spring); }
.flip:hover .flip-in, .flip:focus .flip-in { transform: rotateY(180deg); }
.flip:focus-visible .face { outline: 2px solid var(--c); outline-offset: 3px; }
.face { position: absolute; inset: 0; display: grid; place-content: center; gap: 6px; text-align: center; border-radius: 20px; -webkit-backface-visibility: hidden; backface-visibility: hidden; border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); background: linear-gradient(160deg, color-mix(in srgb, var(--c) 18%, transparent), rgba(255,255,255,.02)); }
.face b { font: 700 3rem var(--display); color: var(--c); text-shadow: 0 0 30px var(--c); }
.face > span { color: var(--muted); font: 600 .8rem var(--mono); letter-spacing: .15em; text-transform: uppercase; }
.face.back { transform: rotateY(180deg); background: color-mix(in srgb, var(--c) 14%, var(--bg-2)); }
.face.back code { font-size: 1.4rem; color: var(--c); background: none; }
.face.back p { margin: 0 16px; }
.face.back small { color: var(--muted); font-family: var(--mono); }

/* Numbered flow lists */
.flow { list-style: none; padding: 0; margin: 18px 0; display: grid; gap: 10px; }
.flow li { display: flex; gap: 12px; align-items: center; padding: 10px 14px; border-radius: 12px; background: rgba(255,255,255,.03); border: 1px solid var(--line); }
.flow li > b { flex: none; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: var(--c); color: #000; font: 700 .8rem var(--mono); }

/* ==========================================================================
   Page: Front-end
   ========================================================================== */
.ld-buttons { justify-content: center; }
.ld-buttons button.on { color: #000; }
.ld-stage { position: relative; min-height: 360px; display: grid; place-items: center; padding: 30px; border-radius: 20px; overflow: hidden; background: #fff; color: #000; font-family: "Times New Roman", serif; transition: background .8s var(--ease); }
.ld-stage.mode-0 .ld-card, .ld-stage.mode-0 .ld-card * { all: revert; }
.ld-stage:not(.mode-0) { background: radial-gradient(circle at 30% 20%, #3b2f8f, #0f0f1a 70%); font-family: var(--font); }
.ld-stage:not(.mode-0) .ld-card { width: min(290px, 100%); padding: 22px; border-radius: 22px; color: #fff; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); box-shadow: 0 30px 60px -20px rgba(0,0,0,.7); animation: pop-in .8s var(--spring); }
.ld-stage:not(.mode-0) .ld-img { height: 130px; margin-bottom: 14px; border-radius: 14px; display: grid; place-items: center; font-size: 3.5rem; background: linear-gradient(135deg, var(--fe), var(--be)); }
.ld-stage:not(.mode-0) h3 { margin: 0 0 4px; font: 700 1.25rem var(--display); }
.ld-stage:not(.mode-0) p { margin: 0 0 16px; color: #c4c7da; }
.ld-stage:not(.mode-0) .ld-like { width: 100%; padding: 12px; border: 0; border-radius: 12px; background: #fff; color: #000; font: 700 .95rem var(--font); cursor: pointer; transition: transform .3s var(--spring), background .3s, color .3s; }
.ld-stage.mode-2 .ld-like:hover { transform: translateY(-2px); }
.ld-stage.mode-2 .ld-like:active { transform: scale(.94); }
.ld-stage.mode-2 .ld-like.liked { background: var(--pink); color: #fff; }
.ld-like b.bump { display: inline-block; animation: bump .5s var(--spring); }
@keyframes bump { 40% { transform: scale(1.8); } }
@keyframes pop-in { from { transform: scale(.85) rotate(-3deg); opacity: 0; } }
.ld-hint { position: absolute; left: 50%; bottom: 16px; transform: translate(-50%, 20px); opacity: 0; padding: 8px 14px; border-radius: 999px; font: 600 .82rem var(--font); background: #111; color: #fff; white-space: nowrap; pointer-events: none; }
.ld-hint.show { animation: hint 2.2s var(--ease); }
@keyframes hint { 10%, 80% { opacity: 1; transform: translate(-50%, 0); } }
.ld-say { color: var(--muted); margin-bottom: 12px; }

.chips-col { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.mixer .chip { transition: transform .4s var(--spring); }
.mixer .chip:hover { transform: translateY(-3px) scale(1.05); }


/* ==========================================================================
   Page: Back-end
   ========================================================================== */
.term { border-radius: 16px; overflow: hidden; background: #07070c; border: 1px solid var(--line); box-shadow: 0 40px 100px -30px rgba(167,139,250,.55); }
.term-body { height: 340px; padding: 20px 22px; font: 14px/1.9 var(--mono); overflow: hidden; }
.term-body p { margin: 0; white-space: pre; color: var(--c, var(--text)); animation: line-in .35s var(--ease); }
.term-body p.muted { color: var(--muted); }
.term-body p.typing::after { content: ""; display: inline-block; width: 9px; height: 1.1em; margin-left: 2px; vertical-align: middle; background: var(--be); animation: blink 1s steps(1) infinite; }
@keyframes line-in { from { opacity: 0; transform: translateX(-10px); } }
@media (max-width: 600px) { .term-body { font-size: 11.5px; padding: 16px; } }

.pipe { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.pipe-step { position: relative; padding: 20px 12px; border-radius: 16px; text-align: center; background: var(--glass); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); animation: pipe-glow 6s infinite; animation-delay: calc(var(--k) * .7s); }
.pipe-step b { display: block; margin-bottom: 4px; font: 700 1rem var(--display); }
.pipe-step small { color: var(--muted); font: .75rem var(--mono); }
.pipe-step:not(:last-child)::after { content: "→"; position: absolute; z-index: 1; right: -7px; top: 50%; transform: translate(50%, -50%); color: var(--muted); }
@keyframes pipe-glow {
  0%, 22%, 100% { transform: none; box-shadow: none; }
  8% { transform: translateY(-6px); border-color: var(--c); box-shadow: 0 0 0 4px color-mix(in srgb, var(--c) 25%, transparent), 0 0 40px var(--c); }
}
@media (max-width: 900px) {
  .pipe { grid-template-columns: 1fr; }
  .pipe-step:not(:last-child)::after { content: "↓"; right: 50%; top: auto; bottom: -7px; transform: translate(50%, 50%); }
}

.rest { display: grid; gap: 10px; }
.rest-row { display: grid; grid-template-columns: 90px 1.4fr 1fr auto; gap: 16px; align-items: center; padding: 14px 18px; border-radius: 14px; background: var(--glass); border: 1px solid var(--line); transition: all .4s var(--ease); }
.rest-row:hover { border-color: var(--c); transform: translateX(8px); }
.rest-row b { padding: 4px 0; border-radius: 8px; text-align: center; font: 700 .85rem var(--mono); color: #000; background: var(--c); }
.rest-row code { background: none; font-size: .95rem; }
.rest-row > span { color: var(--muted); }
.rest-row em { font: 600 .8rem var(--mono); font-style: normal; color: var(--c); }
@media (max-width: 700px) { .rest-row { grid-template-columns: 70px 1fr; } .rest-row > span, .rest-row em { grid-column: 2; } }

.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); }
.checklist li { display: flex; gap: 14px; align-items: flex-start; padding: 16px 18px; border-radius: 14px; background: var(--glass); border: 1px solid var(--line); }
.checklist li::before { content: "✓"; flex: none; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: var(--ok); color: #000; font-weight: 800; transform: scale(0) rotate(-90deg); transition: transform .6s var(--spring) calc(var(--i, 0) * 90ms + 300ms); }
.checklist li.in::before { transform: none; }

/* ---------- Shared beginner components ---------- */
.vibe { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.vibe-step { position: relative; text-align: center; padding: 26px 18px; border-radius: 20px; background: var(--glass); border: 1px solid color-mix(in srgb, var(--c) 35%, transparent); }
.vibe-step > span { display: grid; place-items: center; width: 70px; height: 70px; margin: 0 auto 14px; border-radius: 22px; font-size: 2rem; background: color-mix(in srgb, var(--c) 15%, transparent); border: 1px solid var(--c); animation: float 5s ease-in-out infinite; }
.vibe-step:nth-child(2) > span { animation-delay: -1.2s; } .vibe-step:nth-child(3) > span { animation-delay: -2.4s; } .vibe-step:nth-child(4) > span { animation-delay: -3.6s; }
.vibe-step b { display: block; margin-bottom: 6px; font: 700 1.1rem var(--display); }
.vibe-step small { color: var(--muted); }
.vibe-step:not(:last-child)::after { content: "→"; position: absolute; z-index: 1; right: -9px; top: 50%; transform: translate(50%, -50%); color: var(--c); font-size: 1.2rem; }
@media (max-width: 900px) { .vibe { grid-template-columns: 1fr 1fr; } .vibe-step::after { display: none; } }

.tech-head { display: flex; gap: 14px; align-items: center; margin-bottom: 14px; }
.tech-head img { flex: none; width: 46px; height: 46px; transition: transform .6s var(--spring); }
.card:hover .tech-head img { transform: rotate(-10deg) scale(1.15); }
.tech-head h3 { margin: 0 0 2px; }
img.invert { filter: invert(1); }
.pick { font-size: .92rem; }
.say { margin: 14px 0 0; padding: 10px 14px; border-radius: 12px; font: 500 .86rem/1.5 var(--mono); background: rgba(0,0,0,.3); border: 1px dashed color-mix(in srgb, var(--c, var(--be)) 55%, transparent); color: color-mix(in srgb, var(--c, var(--be)) 65%, #fff); }
.say::before { display: block; margin-bottom: 4px; font: 600 .66rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); content: "💬 Diga à IA"; }
html[data-lang="en"] .say::before { content: "💬 Tell the AI"; }

/* ==========================================================================
   Page: Databases
   ========================================================================== */
.qdemo { border-radius: 18px; overflow: hidden; background: #0a0a12; border: 1px solid color-mix(in srgb, var(--db) 35%, transparent); box-shadow: 0 40px 100px -30px rgba(251,191,36,.35); }
.qline { display: flex; gap: 10px; min-height: 56px; padding: 16px 18px; border-bottom: 1px solid var(--line); font: 14px/1.6 var(--mono); }
.qline > span { color: var(--db); font-weight: 700; }
.qline code { padding: 0; background: none; font-size: 14px; white-space: pre-wrap; }
.qline code.typing::after { content: ""; display: inline-block; width: 8px; height: 1.1em; margin-left: 2px; vertical-align: middle; background: var(--db); animation: blink 1s steps(1) infinite; }
.qdemo .scroll-x { border: 0; border-radius: 0; background: none; }
.qtable { width: 100%; border-collapse: collapse; font: 13px var(--mono); }
.qtable th { padding: 10px 16px; text-align: left; font-weight: 600; color: var(--muted); border-bottom: 1px solid var(--line); }
.qtable td { padding: 10px 16px; border-bottom: 1px solid rgba(255,255,255,.04); white-space: nowrap; transition: all .5s var(--ease) calc(var(--i, 0) * 70ms); }
.qtable tr.hit td { background: rgba(251,191,36,.13); color: #fff; }
.qtable tr.hit td:first-child { box-shadow: inset 3px 0 var(--db); }
.qtable tr.miss td { opacity: .2; filter: blur(.6px); }
.qstatus { min-height: 42px; padding: 12px 18px; font: 12px var(--mono); color: var(--ok); }

.anatomy { padding: 26px; border-radius: 22px; background: var(--glass); border: 1px solid var(--line); }
.anatomy-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.anatomy-chips button { padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--glass); color: var(--muted); font: 600 .9rem var(--font); cursor: pointer; transition: all .35s var(--ease); }
.anatomy-chips button.on { transform: translateY(-2px); background: var(--db); border-color: var(--db); color: #000; box-shadow: 0 10px 30px -10px var(--db); }
.anatomy-tables { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; }
.atable { border-collapse: separate; border-spacing: 0; font: 14px var(--mono); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; transition: box-shadow .5s var(--ease); }
.atable caption { padding: 0 0 8px; text-align: left; font: 700 .95rem var(--display); color: var(--db); }
.atable th, .atable td { padding: 10px 16px; text-align: left; border-bottom: 1px solid var(--line); transition: background .5s var(--ease), color .5s; }
.atable th { background: rgba(255,255,255,.04); color: var(--muted); font-weight: 600; }
.atable tr:last-child td { border-bottom: 0; }
.anatomy[data-active="table"] .atable { box-shadow: 0 0 0 2px var(--db), 0 0 40px -5px var(--db); }
.anatomy[data-active="col"] .main :is(th, td):nth-child(2),
.anatomy[data-active="row"] .main .r2 td,
.anatomy[data-active="pk"] .atable :is(th, td):first-child { background: rgba(251,191,36,.22); color: #fff; }
.anatomy[data-active="fk"] .main :is(th, td):nth-child(4),
.anatomy[data-active="fk"] .cat :is(th, td):first-child { background: rgba(34,211,238,.2); color: #fff; }
.fk-arrow { font-size: 2rem; color: var(--muted); transition: color .5s; }
.anatomy[data-active="fk"] .fk-arrow { color: var(--fe); animation: nudge 1s ease-in-out infinite; }
@keyframes nudge { 50% { transform: translateX(8px); } }
.anatomy-desc { min-height: 60px; margin-top: 22px; }
.anatomy-desc p { display: none; margin: 0; font-size: 1.05rem; }
.anatomy[data-active="table"] [data-for="table"], .anatomy[data-active="col"] [data-for="col"], .anatomy[data-active="row"] [data-for="row"],
.anatomy[data-active="pk"] [data-for="pk"], .anatomy[data-active="fk"] [data-for="fk"] { display: block; animation: panel-in .5s var(--ease); }
@media (max-width: 600px) { .atable { font-size: 12px; } .atable th, .atable td { padding: 8px 10px; } .fk-arrow { transform: rotate(90deg); } }

.erd { display: flex; align-items: center; overflow-x: auto; padding: 10px 4px 24px; }
.ent { flex: none; min-width: 150px; overflow: hidden; border-radius: 14px; background: var(--bg-2); border: 1px solid color-mix(in srgb, var(--db) 45%, transparent); box-shadow: 0 20px 40px -20px rgba(0,0,0,.8); animation: float 6s ease-in-out infinite; }
.ent:nth-child(3) { animation-delay: -1.5s; } .ent:nth-child(5) { animation-delay: -3s; } .ent:nth-child(7) { animation-delay: -4.5s; }
.ent b { display: block; padding: 10px 14px; background: color-mix(in srgb, var(--db) 18%, transparent); color: var(--db); font: 700 .95rem var(--display); }
.ent ul { list-style: none; margin: 0; padding: 8px 14px 12px; font: 13px/1.9 var(--mono); color: var(--muted); }
.rel { flex: 1 0 70px; display: flex; align-items: center; gap: 6px; font: 700 .8rem var(--mono); color: var(--db); }
.rel i { flex: 1; height: 2px; background: repeating-linear-gradient(90deg, var(--db) 0 8px, transparent 8px 14px); animation: dash .8s linear infinite; }
@keyframes dash { to { background-position: 14px 0; } }
@keyframes dash-v { to { background-position: 0 14px; } }
@media (max-width: 900px) {
  .erd { flex-direction: column; }
  .ent { width: min(100%, 320px); }
  .rel { flex: none; flex-direction: column; height: 70px; }
  .rel i { width: 2px; height: auto; background: repeating-linear-gradient(180deg, var(--db) 0 8px, transparent 8px 14px); animation-name: dash-v; }
}

.sqlwords .card { display: grid; gap: 8px; align-content: start; }
.sqlwords .kw { font: 700 1.8rem var(--mono); color: var(--c); text-shadow: 0 0 24px var(--c); }
.sqlwords p { margin: 0; font: 700 1.1rem var(--display); }
.sqlwords code { display: block; padding: 10px 12px; border-radius: 10px; background: rgba(0,0,0,.35); font-size: .8rem; line-height: 1.6; }
.sqlwords small { color: var(--muted); }

.joindemo { padding: 24px; border-radius: 22px; background: var(--glass); border: 1px solid var(--line); }
.jd-buttons .btn.on { color: #000; background: var(--db); border-color: var(--db); }
.jd-grid { display: grid; grid-template-columns: 1fr 1.3fr 1.5fr; gap: 18px; margin: 22px 0; align-items: start; }
@media (max-width: 900px) { .jd-grid { grid-template-columns: 1fr; } }
.jd { width: 100%; border-collapse: collapse; font: 13px var(--mono); }
.jd caption { padding-bottom: 8px; text-align: left; font: 700 .9rem var(--display); color: var(--muted); }
.jd th, .jd td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--line); }
.jd th { color: var(--muted); font-weight: 600; }
.jd tbody tr { box-shadow: inset 3px 0 var(--c, transparent); transition: opacity .5s; }
.jd tbody tr.miss { opacity: .3; }
.jd-result tbody tr { background: color-mix(in srgb, var(--c) 10%, transparent); animation: row-in .6s var(--spring) both; animation-delay: calc(var(--i) * 120ms); }
@keyframes row-in { from { opacity: 0; transform: translateX(-30px); } }
.jd td.null { color: var(--muted); font-style: italic; }
.jd-note { display: none; margin: 0 0 16px; }
.joindemo[data-kind="inner"] [data-note="inner"], .joindemo[data-kind="left"] [data-note="left"] { display: block; animation: panel-in .5s var(--ease); }

.inject { display: grid; gap: 20px; }
.inj-controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.inj-label { flex: 1 1 260px; display: grid; gap: 6px; font: 600 .8rem var(--mono); color: var(--muted); }
.inj-input { padding: 14px 16px; border-radius: 12px; border: 1px solid var(--line); background: rgba(0,0,0,.4); color: var(--text); font: 15px var(--mono); outline: none; transition: border-color .3s, box-shadow .3s; }
.inj-input:focus { border-color: var(--fe); box-shadow: 0 0 0 4px rgba(34,211,238,.15); }
.inj-q { margin: 14px 0; padding: 14px; border-radius: 12px; background: rgba(0,0,0,.4); font: 13px/1.7 var(--mono); white-space: pre-wrap; word-break: break-word; }
.inj-evil { padding: 0 3px; border-radius: 4px; background: var(--bad); color: #fff; }
.inj-data { color: var(--ok); }
.inj-result { padding: 12px 14px; border-radius: 12px; font-weight: 600; font-size: .95rem; }
.inj-result.safe { background: rgba(52,211,153,.12); color: var(--ok); }
.inj-result.pwned { background: rgba(248,113,113,.15); color: var(--bad); animation: shake .5s; }
@keyframes shake { 20%, 60% { transform: translateX(-8px); } 40%, 80% { transform: translateX(8px); } }
.inject.hacked .card.bad { box-shadow: 0 0 0 2px var(--bad), 0 0 60px -10px var(--bad); }

.orm-demo { display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: center; }
.orm-side { display: grid; gap: 10px; padding: 20px; border-radius: 16px; background: var(--glass); border: 1px solid var(--line); }
.orm-side code { background: none; padding: 0; font-size: .95rem; }
.orm-arrow { position: relative; width: 130px; height: 2px; background: linear-gradient(90deg, var(--be), var(--db)); }
.orm-arrow span { position: absolute; z-index: 1; left: 50%; top: 50%; transform: translate(-50%, -50%); padding: 6px 12px; border-radius: 999px; background: var(--bg-2); border: 1px solid var(--be); font: 700 .75rem var(--mono); }
.orm-arrow::after { content: ""; position: absolute; top: -4px; left: 0; width: 10px; height: 10px; border-radius: 50%; background: #fff; box-shadow: 0 0 12px var(--db); animation: orm-dot 2s var(--ease) infinite; }
@keyframes orm-dot { to { left: calc(100% - 10px); } }
@keyframes orm-dot-v { to { top: calc(100% - 10px); } }
@media (max-width: 760px) {
  .orm-demo { grid-template-columns: 1fr; }
  .orm-arrow { width: 2px; height: 70px; margin: 0 auto; background: linear-gradient(var(--be), var(--db)); }
  .orm-arrow::after { left: -4px; top: 0; animation-name: orm-dot-v; }
}

/* ==========================================================================
   Page: Building with AI
   ========================================================================== */
.recipe[data-stack="dotnet"] [data-s="node"], .recipe[data-stack="node"] [data-s="dotnet"] { display: none !important; }
.stack-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 40px; }
.stack-switch button { display: flex; gap: 16px; align-items: center; padding: 20px 22px; border-radius: 20px; text-align: left; color: var(--text); font: inherit; cursor: pointer; background: var(--glass); border: 1px solid var(--line); transition: all .5s var(--ease); }
.stack-switch img { width: 48px; height: 48px; transition: transform .6s var(--spring); }
.stack-switch b { display: block; font: 700 1.3rem var(--display); }
.stack-switch small { color: var(--muted); font: .78rem var(--mono); }
.stack-switch button:hover { transform: translateY(-3px); }
.stack-switch button.on { border-color: var(--be); background: linear-gradient(135deg, rgba(167,139,250,.22), rgba(34,211,238,.1)); box-shadow: 0 20px 50px -20px var(--be); }
.stack-switch button.on img { transform: rotate(-10deg) scale(1.15); }
@media (max-width: 700px) { .stack-switch { grid-template-columns: 1fr; } }

.arch { display: flex; align-items: center; padding: 30px; border-radius: 24px; background: var(--glass); border: 1px solid var(--line); }
.arch-node { flex: none; width: 170px; padding: 20px 14px; text-align: center; border-radius: 18px; background: var(--bg-2); border: 1px solid color-mix(in srgb, var(--c) 50%, transparent); box-shadow: 0 0 40px -15px var(--c); }
.arch-node img, .arch-ico { display: block; width: 46px; height: 46px; margin: 0 auto 10px; font-size: 2.2rem; line-height: 46px; }
.arch-node b { display: block; font: 700 1rem var(--display); }
.arch-node small { color: var(--c); font: 600 .7rem var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.arch-node.pop { animation: pop-in .7s var(--spring) both; animation-delay: calc(var(--i) * 90ms); }
.arch-link { position: relative; flex: 1; height: 2px; margin: 0 6px; background: linear-gradient(90deg, var(--line), rgba(255,255,255,.3), var(--line)); }
.arch-link::before, .arch-link::after { content: ""; position: absolute; top: -4px; width: 10px; height: 10px; border-radius: 50%; }
.arch-link::before { background: var(--fe); box-shadow: 0 0 12px var(--fe); animation: link-go 2.4s var(--ease) infinite; }
.arch-link::after { background: var(--ok); box-shadow: 0 0 12px var(--ok); animation: link-back 2.4s var(--ease) infinite; }
@keyframes link-go { 0% { left: 0; opacity: 0; } 10% { opacity: 1; } 50%, 100% { left: calc(100% - 10px); opacity: 0; } }
@keyframes link-back { 0%, 50% { left: calc(100% - 10px); opacity: 0; } 60% { opacity: 1; } 100% { left: 0; opacity: 0; } }
@keyframes link-go-v { 0% { top: 0; opacity: 0; } 10% { opacity: 1; } 50%, 100% { top: calc(100% - 10px); opacity: 0; } }
@keyframes link-back-v { 0%, 50% { top: calc(100% - 10px); opacity: 0; } 60% { opacity: 1; } 100% { top: 0; opacity: 0; } }
@media (max-width: 900px) {
  .arch { flex-direction: column; }
  .arch-node { width: min(100%, 260px); }
  .arch-link { flex: none; width: 2px; height: 50px; margin: 6px 0; }
  .arch-link::before { left: -4px; animation-name: link-go-v; }
  .arch-link::after { left: -4px; animation-name: link-back-v; }
}

.tree-wrap { margin-top: 70px; }
.tree { margin: 0; padding: 22px 24px; overflow-x: auto; border-radius: 18px; background: #0b0b14; border: 1px solid var(--line); font: 13.5px/1.9 var(--mono); animation: panel-in .6s var(--ease); }
.tree .c { color: var(--muted); }
.tree b { color: var(--c); }

.prompt-box { margin: 18px 0 14px; overflow: hidden; border-radius: 16px; background: #0b0b14; border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); }
.prompt-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; font: 600 .78rem var(--mono); background: color-mix(in srgb, var(--c) 12%, transparent); color: color-mix(in srgb, var(--c) 80%, #fff); }
.ptext { margin: 0; padding: 16px 18px; font: 13.5px/1.75 var(--mono); white-space: pre-wrap; color: #dfe2f5; }
.check { display: flex; gap: 10px; align-items: baseline; padding: 10px 14px; border-radius: 12px; font-size: .95rem; background: rgba(52,211,153,.08); border: 1px solid rgba(52,211,153,.3); }
.check::before { content: "✓"; color: var(--ok); font-weight: 800; }

/* ==========================================================================
   Page: Glossary
   ========================================================================== */
.gl-controls { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 28px; }
.gl-search { flex: 1 1 280px; padding: 14px 18px; border-radius: 14px; border: 1px solid var(--line); background: rgba(0,0,0,.35); color: var(--text); font: 15px var(--font); outline: none; transition: border-color .3s, box-shadow .3s; }
.gl-search:focus { border-color: var(--ok); box-shadow: 0 0 0 4px rgba(52,211,153,.15); }
.gl-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.gl-filters button { padding: 9px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--glass); color: var(--muted); font: 600 .85rem var(--font); cursor: pointer; transition: all .3s var(--ease); }
.gl-filters button.on { background: var(--c, var(--text)); border-color: transparent; color: #000; }
.gl-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 270px), 1fr)); gap: 14px; margin: 0; }
.gl-item { padding: 18px 20px; border-radius: 16px; background: var(--glass); border: 1px solid var(--line); border-top: 3px solid var(--c); transition: transform .4s var(--ease), border-color .4s; }
.gl-item:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--c) 50%, transparent); border-top-color: var(--c); }
.gl-item[hidden] { display: none; }
.gl-item dt { margin-bottom: 6px; font: 700 1.1rem var(--display); color: var(--c); }
.gl-item dd { margin: 0; color: var(--muted); font-size: .93rem; }
.gl-item.pop { animation: gl-pop .5s var(--spring) both; animation-delay: calc(var(--i) * 30ms); }
@keyframes gl-pop { from { opacity: 0; transform: translateY(16px) scale(.96); } }
.gl-empty { padding: 40px 0; text-align: center; color: var(--muted); }

/* ==========================================================================
   Page: Prompt Builder
   ========================================================================== */
.pb { display: grid; grid-template-columns: 1.05fr .95fr; gap: 28px; align-items: start; }
@media (max-width: 1000px) { .pb { grid-template-columns: 1fr; } }
.pb-form { display: grid; gap: 18px; }
.pb-presets { padding: 18px 20px; border-radius: 18px; background: linear-gradient(135deg, rgba(244,114,182,.12), rgba(167,139,250,.08)); border: 1px solid rgba(244,114,182,.3); }
.pb-preset-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.pb-preset { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: rgba(0,0,0,.25); color: var(--text); font: 600 .85rem var(--font); cursor: pointer; transition: transform .35s var(--spring), border-color .3s; }
.pb-preset:hover { transform: translateY(-3px) scale(1.04); border-color: var(--pink); }
.pb-preset img { width: 18px; height: 18px; }
.pb-group { padding: 20px 22px; border-radius: 18px; background: var(--glass); border: 1px solid var(--line); }
.pb-group h3 { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; margin-bottom: 14px; font-size: 1.1rem; }
.pb-group h3 small { font: 500 .8rem var(--font); }
.pb-group.off .pb-opts { opacity: .35; pointer-events: none; }
.pb-group.bumped { animation: bumped 1s var(--ease); }
@keyframes bumped { 0% { border-color: var(--c); box-shadow: 0 0 0 0 color-mix(in srgb, var(--c) 60%, transparent); } 100% { box-shadow: 0 0 0 16px transparent; } }
.pb-opts { display: flex; flex-wrap: wrap; gap: 8px; }
.pb-opt { display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px; border-radius: 12px; border: 1px solid var(--line); background: rgba(0,0,0,.25); color: var(--muted); font: 600 .88rem var(--font); cursor: pointer; transition: all .35s var(--spring); }
.pb-opt img { width: 20px; height: 20px; }
.pb-emoji { font-size: 1.05rem; line-height: 1; }
.pb-opt:hover { color: var(--text); transform: translateY(-2px); }
.pb-opt.on { color: #000; background: var(--c); border-color: var(--c); box-shadow: 0 10px 26px -10px var(--c); transform: scale(1.04); }
.pb-opt.on img.invert { filter: none; }
.pb-opt.dim { opacity: .45; border-style: dashed; }
.pb-opt.dim:hover { opacity: .8; }
.pb-note { margin: 12px 0 0; }
.pb-input { width: 100%; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--line); background: rgba(0,0,0,.35); color: var(--text); font: 15px/1.6 var(--font); outline: none; resize: vertical; transition: border-color .3s, box-shadow .3s; }
.pb-input:focus { border-color: var(--pink); box-shadow: 0 0 0 4px rgba(244,114,182,.15); }
.pb-desc.empty .pb-input { animation: glow-nudge 2.4s ease-in-out infinite; }
@keyframes glow-nudge { 50% { border-color: var(--pink); box-shadow: 0 0 0 4px rgba(244,114,182,.12); } }
.pb-out { position: sticky; top: 84px; display: grid; gap: 16px; }
@media (max-width: 1000px) { .pb-out { position: static; } }
.pb-stack { display: grid; gap: 8px; }
.pb-layer { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 14px; font-size: .95rem; background: color-mix(in srgb, var(--c) 12%, transparent); border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); }
.pb-layer img { width: 26px; height: 26px; }
.pb-layer::after { margin-left: auto; font: 600 .66rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--c); }
.pb-layer[data-layer="front"]::after { content: "front-end"; }
.pb-layer[data-layer="back"]::after { content: "back-end"; }
.pb-layer[data-layer="db"]::after { content: "database"; }
.pb-layer.pop { animation: layer-pop .7s var(--spring); }
@keyframes layer-pop { from { opacity: 0; transform: translateY(-24px) scale(.95); } }
.pb-count { margin-left: auto; font-style: normal; font-size: .72rem; color: var(--muted); }
.pb-result { max-height: 62vh; overflow: auto; white-space: pre-wrap; font-size: 12.5px !important; }
.pb-copy { justify-content: center; width: 100%; }