/* Aigent Mode — the free course at /learn: overview, step player, exercises, canvas and certificate. */

/* ---------- overview ---------- */
.learn-head { padding-bottom: 40px; }
.progress-note { font: 500 12.5px var(--mono); color: var(--ink-3); margin: 18px 0 10px; }
.overall { height: 4px; max-width: 320px; background: var(--line); border-radius: 4px; overflow: hidden; }
.overall i { display: block; height: 100%; width: 0; background: var(--ink); transition: width .4s; }
.learn-grid { display: grid; grid-template-columns: 1fr 340px; gap: 28px; align-items: start; }
.units { list-style: none; margin: 0; padding: 0; background: var(--white); border-radius: var(--radius); box-shadow: 0 0 0 1px var(--line); overflow: hidden; }
.units li + li { border-top: 1px solid var(--line); }
.units a { display: grid; grid-template-columns: 38px 1fr auto; gap: 14px; align-items: center; padding: 18px 20px; text-decoration: none; transition: background .2s; }
.units a:hover { background: #FBFAF8; }
.u-n { font: 500 13px var(--mono); color: var(--ink-3); }
.u-t b { display: block; font-weight: 500; letter-spacing: -.015em; }
.u-t small { display: block; color: var(--ink-2); font-size: 14px; margin-top: 2px; }
.u-state { font: 500 12px var(--mono); color: var(--ink-3); white-space: nowrap; }
.unit-row.done .u-state { color: var(--mint-ink); }
.unit-row.done .u-n { color: var(--mint-ink); }
.unit-row.started .u-state { color: var(--lav-ink); }
.learn-side { padding: 26px; position: sticky; top: 90px; }
.learn-side .sum { margin: 14px 0 16px; }
.small { font-size: 13px; color: var(--ink-2); }

/* ---------- player ---------- */
.p-wrap { max-width: 760px; padding-top: 50px; padding-bottom: 90px; }
.p-top { display: flex; justify-content: space-between; align-items: center; }
.p-unit { font: 500 12px var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; }
.p-title { font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -.04em; line-height: 1.1; margin: 14px 0 18px; }
.p-bar { display: flex; gap: 4px; margin-bottom: 26px; }
.p-bar i { flex: 1; height: 4px; border-radius: 4px; background: var(--line); }
.p-bar i.on { background: var(--ink); }
.p-bar i.now { background: var(--ink-3); }
.step { background: var(--white); border-radius: 20px; box-shadow: 0 0 0 1px var(--line), 0 18px 40px -28px rgba(17,17,17,.25); padding: 34px 36px; outline: none; }
.step h2 { font-size: 23px; letter-spacing: -.03em; line-height: 1.2; margin-bottom: 14px; font-weight: 500; }
.step p { margin: 0 0 12px; color: #2B2A27; }
.step a:not(.btn) { color: var(--lav-ink); }
.step code { font: 500 13.5px var(--mono); background: #F1EFEB; padding: 2px 6px; border-radius: 5px; }
.step ol.tight { margin: 4px 0 12px; padding-left: 22px; }
.step ol.tight li { margin: 6px 0; }
.kicker { display: inline-block; font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--lav-ink); background: var(--lav); padding: 5px 8px; border-radius: 6px; margin-bottom: 14px; }
.box { padding: 20px 22px; margin-top: 18px; border-radius: 16px; }
.box .label { display: block; margin-bottom: 8px; }
.box ol { margin: 0 0 8px; padding-left: 20px; }
.ladder { counter-reset: r; list-style: none; padding: 0; margin: 6px 0 14px; display: grid; gap: 6px; }
.ladder li { counter-increment: r; display: flex; gap: 12px; align-items: baseline; padding: 10px 14px; border-radius: 10px; background: #F6F5F3; }
.ladder li::before { content: counter(r); font: 600 12px var(--mono); color: var(--ink-3); }
.ladder li:nth-child(2), .ladder li:nth-child(3), .ladder li:nth-child(4) { background: var(--mint); }

/* email mock */
.mock { border-radius: 14px; box-shadow: 0 0 0 1px var(--line); margin: 6px 0 18px; overflow: hidden; background: #FCFBF9; }
.m-head { display: flex; flex-wrap: wrap; gap: 4px 14px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: #fff; font-size: 14px; }
.m-from { font-weight: 600; }
.m-sub { color: var(--ink-2); }
.m-body { padding: 14px 16px; font-size: 15px; color: #2B2A27; }

/* choice */
.opts-l { display: grid; gap: 10px; margin-top: 18px; }
.o { display: flex; gap: 12px; align-items: flex-start; text-align: left; width: 100%; padding: 14px 16px; border: 0; border-radius: 12px; background: #F6F5F3; box-shadow: inset 0 0 0 1px var(--line); font: 400 15.5px/1.45 var(--sans); color: var(--ink); cursor: pointer; transition: background .15s, box-shadow .15s; }
.o:hover:not(:disabled) { background: #F0EEEA; }
.o:disabled { cursor: default; }
.o-dot { flex: none; width: 18px; height: 18px; border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--line-2); margin-top: 2px; background: #fff; }
.o.right { background: var(--mint); box-shadow: inset 0 0 0 1.5px var(--mint-ink); }
.o.right .o-dot { background: var(--mint-ink); box-shadow: inset 0 0 0 4px #fff, 0 0 0 1.5px var(--mint-ink); }
.o.wrong.picked { background: #FCE7E2; box-shadow: inset 0 0 0 1.5px #D9622B; }
.o.wrong:not(.picked) { background: #F6F5F3; }
.why { margin-top: 14px; font-size: 15px; padding: 0; }
.why.ok, .why.no { padding: 14px 16px; border-radius: 12px; }
.why.ok { background: #EEF9F2; }
.why.no { background: #FDF1EC; }
.why .try { color: var(--ink-3); }

/* sort */
.sort { display: grid; gap: 10px; margin-top: 16px; }
.s-item { padding: 14px 16px; border-radius: 12px; background: #F6F5F3; box-shadow: inset 0 0 0 1px var(--line); }
.s-item p { margin: 0 0 10px; font-size: 15.5px; }
.s-btns { display: flex; flex-wrap: wrap; gap: 6px; }
.s-btns button { border: 0; border-radius: 8px; padding: 8px 12px; font: 500 13.5px var(--sans); background: #fff; box-shadow: inset 0 0 0 1px var(--line-2); cursor: pointer; color: var(--ink); }
.s-btns button:hover:not(:disabled) { box-shadow: inset 0 0 0 1.5px var(--ink); }
.s-btns button:disabled { cursor: default; opacity: .55; }
.s-btns button.ans { opacity: 1; background: var(--mint); box-shadow: inset 0 0 0 1.5px var(--mint-ink); color: #0F5133; }
.s-btns button.miss { opacity: 1; background: #FCE7E2; box-shadow: inset 0 0 0 1.5px #D9622B; text-decoration: line-through; }
.s-item.right { background: #F3FBF6; }
.s-item.wrong { background: #FEF6F2; }
.s-why { font-size: 14px; color: var(--ink-2); }
.s-why:not(:empty) { margin-top: 10px; }
.score { font: 500 13px var(--mono); color: var(--ink-2); margin: 14px 0 0 !important; }

/* build */
.build-steps { padding-left: 22px; margin: 8px 0 16px; }
.build-steps li { margin: 8px 0; }
.copy { border-radius: 14px; background: #16161A; color: #EDEBE7; margin: 14px 0; overflow: hidden; }
.c-head { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px 10px 16px; background: #222227; font: 500 12px var(--mono); color: #B9B6AF; letter-spacing: .03em; }
.copy pre { margin: 0; padding: 16px; font: 400 13px/1.55 var(--mono); white-space: pre-wrap; word-break: break-word; max-height: 300px; overflow: auto; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink-2); }
.check input { margin-top: 3px; accent-color: var(--ink); width: 16px; height: 16px; }
.did { margin-top: 18px; padding: 14px 16px; border-radius: 12px; background: #F6F5F3; color: var(--ink); font-size: 15px; font-weight: 500; cursor: pointer; }
.linkish { background: none; border: 0; padding: 0; margin-top: 12px; font: 400 13px var(--sans); color: var(--ink-3); text-decoration: underline; cursor: pointer; }

/* fields */
.fld { display: block; margin: 14px 0; }
.fld span { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; }
.fld input, .fld textarea { width: 100%; border: 0; border-radius: 10px; background: var(--paper); box-shadow: inset 0 0 0 1px var(--line); padding: 12px 13px; font: 400 15px/1.5 var(--sans); color: var(--ink); resize: vertical; }
.fld textarea { font-size: 14.5px; }
.fld input:focus, .fld textarea:focus { outline: none; box-shadow: inset 0 0 0 1.5px var(--ink); background: #fff; }
.saved-note { font: 500 12px var(--mono); color: var(--ink-3) !important; margin-top: 4px !important; }
.err { color: #C2412F; font-size: 13px; min-height: 18px; margin: 4px 0 10px; }

/* summary */
.sum { list-style: none; padding: 0; margin: 4px 0 0; display: grid; gap: 10px; }
.sum li { position: relative; padding-left: 28px; }
.sum li::before { content: '✓'; position: absolute; left: 0; top: 0; width: 19px; height: 19px; border-radius: 6px; background: var(--mint); color: var(--mint-ink); font-size: 12px; display: grid; place-items: center; margin-top: 2px; }

/* calculator */
.calc { display: grid; gap: 4px; margin: 16px 0 18px; }
.c-row { display: grid; grid-template-columns: 1fr 180px 64px; gap: 14px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.c-row input { accent-color: var(--ink); width: 100%; }
.c-row output { font: 500 14px var(--mono); text-align: right; }
.c-out { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 20px; }
.c-out div { font-size: 13px; color: var(--ink-2); }
.c-out b { display: block; font-size: 26px; font-weight: 500; letter-spacing: -.03em; color: var(--ink); }
.c-note { font-size: 14px; color: var(--ink-2) !important; margin-top: 14px !important; }

/* canvas */
.canvas { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 16px 0; }
.cv { padding: 14px 16px; border-radius: 12px; background: #F6F5F3; box-shadow: inset 0 0 0 1px var(--line); }
.cv.wide { grid-column: 1 / -1; }
.cv b { display: block; font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); margin-bottom: 6px; }
.cv p { margin: 0; font-size: 14.5px; }
.cv .cv-empty { color: var(--ink-3); font-style: italic; }

/* certificate */
.cert-form { max-width: 440px; }
.cert { text-align: center; padding: 46px 30px; border-radius: 16px; box-shadow: inset 0 0 0 1px var(--line), inset 0 0 0 10px #FBFAF8, inset 0 0 0 11px var(--line); }
.cert .label { display: block; }
.cert .c-logo { display: flex; justify-content: center; gap: 8px; align-items: center; font: 600 16px var(--sans); letter-spacing: -.03em; margin-bottom: 26px; }
.cert .c-logo svg { width: 22px; }
.cert .c-logo span { color: var(--ink-3); font-weight: 500; }
.cert h2 { font-size: clamp(30px, 5vw, 44px); letter-spacing: -.04em; margin: 16px 0 6px; font-weight: 400; }
.cert h3 { font-size: 21px; letter-spacing: -.02em; margin: 6px 0 14px; font-weight: 500; }
.cert p { color: var(--ink-2); }
.cert .c-what { max-width: 500px; margin: 0 auto 26px; font-size: 14.5px; }
.cert .c-foot { display: flex; flex-wrap: wrap; gap: 6px 16px; justify-content: space-between; font: 500 12px var(--mono); color: var(--ink-3); border-top: 1px solid var(--line); padding-top: 14px; }

/* end of unit + nav */
.end { text-align: center; padding: 50px 30px; }
.end .tick { width: 54px; height: 54px; border-radius: 14px; background: var(--mint); color: var(--mint-ink); display: grid; place-items: center; margin: 0 auto 16px; font-size: 24px; }
.end-acts { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }
.p-nav { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.p-hint { flex: 1; text-align: right; font-size: 13px; color: var(--ink-3); }
.btn:disabled { opacity: .35; cursor: not-allowed; transform: none; }

@media (max-width: 960px) {
  .learn-grid { grid-template-columns: 1fr; }
  .learn-side { position: relative; top: 0; }
}
@media (max-width: 620px) {
  .learn-head .display br { display: none; }
  .step { padding: 24px 18px; border-radius: 16px; }
  .p-wrap { padding-top: 34px; }
  .units a { grid-template-columns: 28px 1fr; padding: 16px; }
  .u-state { grid-column: 2; }
  .c-row { grid-template-columns: 1fr 56px; }
  .c-row input { grid-column: 1 / -1; grid-row: 2; }
  .c-out { grid-template-columns: 1fr; }
  .canvas { grid-template-columns: 1fr; }
  .p-hint { display: none; }
  .p-nav { justify-content: space-between; }
}


/* ---------- interactive visuals (Aigent Made video look: brick plates, robot agents, navy captions) ---------- */
.vis { margin-top: 16px; --navy: #141826; --acc: #7DF0B0; }
.vis .iso { width: 100%; height: auto; display: block; background: radial-gradient(80% 70% at 50% 45%, #F1EEE9, #E6E2DB); border-radius: 16px; font-family: 'Poppins', var(--sans); overflow: visible; }
.v-cap { margin-top: 12px; background: var(--navy); color: #E9ECF5; border-radius: 14px; padding: 14px 18px; font: 500 14.5px/1.5 var(--sans); min-height: 52px; }
.v-cap b { font: 800 13px/1 'Poppins', var(--sans); letter-spacing: .04em; color: var(--acc); margin-right: 6px; }
.v-cap b.red, .v-cap .v-bad { color: #FF8A73; }
.v-cap em { font-style: normal; color: var(--acc); font-weight: 600; }
.v-cap em.no { color: #FF8A73; }
.v-hint { font: 700 12.5px 'Poppins', var(--sans); text-transform: uppercase; letter-spacing: .05em; color: #fff; }
.v-ok { display: block; margin-top: 8px; color: var(--acc); font-weight: 600; }
.v-ok::before { content: '✓ '; }
.v-bad { display: block; margin-top: 6px; font-weight: 600; }
.v-tabs, .v-legend { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 10px; }
.v-legend { margin: 10px 0 0; }
.v-tabs button, .v-legend button { border: 0; border-radius: 999px; padding: 9px 14px; font: 700 13px 'Poppins', var(--sans); background: #fff; color: var(--navy); box-shadow: inset 0 0 0 1.5px var(--line-2); cursor: pointer; transition: background .15s, box-shadow .15s; }
.v-tabs button:hover, .v-legend button:hover { box-shadow: inset 0 0 0 1.5px var(--navy); }
.v-tabs button[aria-selected=true], .v-tabs button[aria-pressed=true], .v-legend button.on { background: var(--navy); color: #fff; box-shadow: none; }
.v-legend button b { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--navy); color: #fff; font-size: 11px; margin-right: 7px; }
.v-legend button.on b { background: var(--acc); color: var(--navy); }
.v-legend button.seen:not(.on) { background: #EEF9F2; }
.v-switch { display: flex; gap: 10px; align-items: center; margin-top: 10px; font: 600 13.5px var(--sans); cursor: pointer; }
.v-switch input { accent-color: #E5533D; width: 16px; height: 16px; }

/* hotspots */
.vis .hot { cursor: pointer; outline: none; }
.vis .hot .ring { fill: none; stroke: var(--acc); stroke-width: 3; transform-box: fill-box; transform-origin: center; animation: vpulse 1.6s ease-out infinite; }
.vis .hot:focus-visible circle:nth-child(2) { stroke: var(--lav-ink); stroke-width: 3; }
@keyframes vpulse { from { transform: scale(.9); opacity: 1; } to { transform: scale(1.9); opacity: 0; } }
.vis.v-anatomy:has(.v-legend button[data-k="0"].seen) .hot[data-k="0"] .ring,
.vis.v-anatomy:has(.v-legend button[data-k="1"].seen) .hot[data-k="1"] .ring,
.vis.v-anatomy:has(.v-legend button[data-k="2"].seen) .hot[data-k="2"] .ring,
.vis.v-anatomy:has(.v-legend button[data-k="3"].seen) .hot[data-k="3"] .ring { animation: none; opacity: 0; }
.vis .hot.on circle:nth-child(2) { fill: var(--acc); }
.vis .hot.on text { fill: var(--navy); }
.vis .agent .eye { animation: vblink 4s infinite; transform-box: fill-box; transform-origin: center; }
@keyframes vblink { 0%, 92%, 100% { transform: scaleY(1); } 95% { transform: scaleY(.1); } }
.vis .bubble { animation: vfloat 3s ease-in-out infinite; }
@keyframes vfloat { 50% { transform: translateY(-4px); } }

/* one email, three ways */
.v-stage { position: relative; }
.v-stage .who { opacity: 0; transition: opacity .35s; }
.v-stage[data-mode=chatbot] .person-g, .v-stage[data-mode=""] .person-g { opacity: 1; }
.v-stage[data-mode=agent] .agent-g { opacity: 1; }
.v-stage .belt { opacity: 0; transition: opacity .35s; }
.v-stage[data-mode=automation] .belt { opacity: 1; }
.v-stage .screen { transition: fill .3s; }
.v-stage[data-mode=chatbot] .screen { fill: #8DB4F2; }
.v-stage[data-mode=chatbot] .e1 { animation: vdesk 4.6s .3s cubic-bezier(.5,0,.2,1) forwards; }
.v-stage[data-mode=agent] .e1 { animation: vdesk 2.6s .3s cubic-bezier(.5,0,.2,1) forwards; }
.v-stage[data-mode=automation] .e1 { animation: vbelt 1.6s .2s cubic-bezier(.5,0,.2,1) forwards; }
.v-stage[data-mode=automation] .e2 { animation: vbelt 1.6s .9s cubic-bezier(.5,0,.2,1) forwards; }
@keyframes vdesk { 40%, 70% { transform: translate(var(--dx), var(--dy)); } 100% { transform: translate(var(--sx), var(--sy)); } }
@keyframes vbelt { to { transform: translate(var(--sx), var(--sy)); } }
.v-steps { position: absolute; left: 12px; right: 12px; bottom: 12px; display: flex; flex-wrap: wrap; gap: 5px; }
.v-steps span { font: 700 11.5px 'Poppins', var(--sans); padding: 6px 10px; border-radius: 999px; opacity: 0; transform: translateY(6px); animation: vin .35s forwards; animation-delay: calc(var(--i) * .45s + .6s); }
.v-steps .h { background: #F08A5D; color: #fff; }
.v-steps .a { background: var(--navy); color: var(--acc); }
.v-steps .bad { background: #E5533D; color: #fff; }
@keyframes vin { to { opacity: 1; transform: none; } }

/* ladder */
.vis .rung { cursor: pointer; outline: none; transition: transform .25s; }
.vis .rung:hover, .vis .rung:focus-visible { transform: translateY(-4px); }
.vis .rung.on { transform: translateY(-8px); }
.vis .rung.on .tag rect { fill: #7DF0B0; }
.vis .rung.on .tag text { fill: #141826; }
.vis .rung:not(.seen) .tag rect { animation: vglow 1.6s infinite; }
@keyframes vglow { 50% { fill: #3A4060; } }

/* pipeline */
.pipe .mover { transition: none; }
.pipe.go .mover { animation: vmove 1.1s .1s cubic-bezier(.5,0,.2,1) forwards; }
@keyframes vmove { to { transform: translate(calc(var(--bx) - var(--ax)), calc(var(--by) - var(--ay))) scale(.8); opacity: 0; } }
.pipe .out { opacity: 0; transform: translate(var(--bx), var(--by)); }
.pipe.go .row { animation: vout 1s 1.3s forwards; }
.pipe.go.routine .draft, .pipe.go.gas .draft { animation: vout 1s 1.2s forwards; }
.pipe.go.auto .draft { animation: vsend 1.4s 1.2s forwards; }
.pipe.go.gas .ping { animation: vout .8s 1.1s forwards; }
.pipe.go.gas .phone-glow { animation: vflash .5s 1.8s 4; }
@keyframes vout { from { opacity: 1; transform: translate(var(--bx), var(--by)); } to { opacity: 1; transform: translate(var(--x), var(--y)); } }
@keyframes vsend { 0% { opacity: 1; transform: translate(var(--bx), var(--by)); } 60% { opacity: 1; transform: translate(var(--x), var(--y)); } 100% { opacity: 0; transform: translate(calc(var(--x) + 120px), calc(var(--y) - 60px)); } }
@keyframes vflash { 50% { opacity: .2; } }
.pipe.go .worker .eye { animation: vthink .3s 3 .5s; }
@keyframes vthink { 50% { transform: scaleY(.2); } }
.pipe.risky .iso { box-shadow: inset 0 0 0 3px #E5533D; }

/* trifecta */
.vis .leg { opacity: .28; transition: opacity .3s, transform .3s; cursor: pointer; }
.vis .leg.on { opacity: 1; transform: translateY(-6px); }
.vis .lamp circle { fill: #C9C3BA; transition: fill .2s; }
.vis .danger .lamp circle { fill: #E5533D; animation: vflash .6s infinite; }
.vis .danger { box-shadow: inset 0 0 0 3px #E5533D; }
.vis .gate { opacity: 0; transition: opacity .3s; }
.vis .human .gate { opacity: 1; }
.vis .human .leg[data-k="2"] { filter: saturate(.4); }

@media (prefers-reduced-motion: reduce) {
  .vis *, .v-steps span { animation-duration: .01s !important; animation-delay: 0s !important; transition-duration: .01s !important; }
}
@media (max-width: 620px) { .v-tabs button, .v-legend button { padding: 8px 11px; font-size: 12px; } .v-steps { position: static; margin-top: 8px; } }

/* print: only the canvas or certificate */
@media print {
  body { background: #fff; }
  .nav, #foot, .p-top, .p-title, .p-bar, .p-nav, .end-acts, .kicker, .modal { display: none !important; }
  .p-wrap { padding: 0; }
  .step { box-shadow: none; padding: 0; }
}