/* Landing page.
   One bold thing: the live demo in the hero (blocks snap in, the Python writes itself, the bot answers).
   Everything else is quiet: plain text on the page, hairlines, the same block shapes as the editor. */

/* family colours for the category tabs and panels */
.cat--events { --cat: var(--cat-events); }
.cat--bot { --cat: var(--cat-bot); }
.cat--messages { --cat: var(--cat-messages); }
.cat--info { --cat: var(--cat-info); }
.cat--control { --cat: var(--cat-control); }
.cat--operators { --cat: var(--cat-operators); }
.cat--variables { --cat: var(--cat-variables); }
.cat--lists { --cat: var(--cat-lists); }
.cat--data { --cat: var(--cat-data); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(2rem, 5vw, 4rem) clamp(2.5rem, 6vw, 5rem);
  overflow: clip;
}

/* a faint workspace grid behind the demo */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, hsl(var(--hue) 8% 26%) 1px, transparent 1.6px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(70% 90% at 78% 45%, #000 15%, transparent 100%);
  mask-image: radial-gradient(70% 90% at 78% 45%, #000 15%, transparent 100%);
}

.hero-grid {
  position: relative;
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

@media (min-width: 64rem) {
  .hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7.4fr);
  }
}

.hero h1 {
  font-size: clamp(2.25rem, 1.3rem + 2.8vw, 3.6rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.hero-lead {
  max-width: 33rem;
  margin-top: 1.25rem;
  color: var(--text-2);
  font-size: var(--fs-lg);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.hero-note {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  max-width: 28rem;
  margin-top: 1.25rem;
  color: var(--text-3);
  font-size: var(--fs-sm);
}

.hero-note .ph-fill {
  margin-top: 0.12rem;
  font-size: 1.2em;
}

/* ---------- the demo window ---------- */
.demo {
  display: grid;
  min-width: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  background: var(--bg-panel);
  box-shadow: 0 0 0 1px rgb(0 0 0 / 0.45), 0 32px 70px -24px rgb(0 0 0 / 0.75);
  overflow: hidden;
}

.demo-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--line);
}

.demo-title {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-inline-end: auto;
  font-size: var(--fs-sm);
  font-weight: 600;
}

.demo-title .ph-fill {
  color: var(--accent-hi);
}

.demo-controls {
  display: flex;
  gap: 0.4rem;
}

.demo-btn {
  min-height: 2rem;
  padding: 0.25rem 0.7rem;
  font-size: 0.8125rem;
}

.demo-btn[data-act="run"] {
  --btn-bg: var(--ok);
  --btn-bg-hover: #6fd89c;
  --btn-fg: #0b2216;
  --btn-lip: color-mix(in srgb, var(--ok) 52%, #000);
}

.demo-btn[data-act="stop"] {
  --btn-bg: var(--danger-solid);
  --btn-bg-hover: #b22c37;
  --btn-fg: #fff;
  --btn-lip: #7d1d25;
}

.demo-btn.is-hint {
  animation: nudge 1.3s ease-in-out 3;
}

@keyframes nudge {
  0%,
  100% {
    box-shadow: 0 2px 0 var(--btn-lip), 0 0 0 0 rgb(69 137 255 / 0);
  }

  50% {
    box-shadow: 0 2px 0 var(--btn-lip), 0 0 0 5px rgb(69 137 255 / 0.4);
  }
}

.demo-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-field);
  color: var(--text-2);
  font-size: var(--fs-xs);
  font-weight: 500;
}

.demo-status .dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--text-3);
}

.demo-status[data-status="starting"] .dot {
  background: var(--warn);
  animation: pulse 0.9s ease-in-out infinite;
}

.demo-status[data-status="online"] .dot {
  background: var(--ok);
}

@keyframes pulse {
  50% {
    opacity: 0.3;
  }
}

.demo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
}

@media (min-width: 40rem) {
  .demo-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (max-width: 35rem) {
  .demo-bar {
    gap: 0.4rem;
  }

  .demo-title {
    display: none;
  }

  .demo-controls {
    gap: 0.3rem;
    margin-inline-end: auto;
  }

  .demo-btn {
    padding-inline: 0.55rem;
  }
}

.pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg-panel);
}

.pane-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0.5rem 0.9rem;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--line);
  color: var(--text-2);
  font-size: var(--fs-xs);
  font-weight: 600;
  line-height: 1.4;
}

.pane-title .ph-fill {
  color: var(--text-3);
}

.pane-note {
  margin-inline-start: auto;
  color: var(--text-3);
  font-weight: 400;
  text-align: end;
}

.pane-hint {
  color: var(--warn);
  font-weight: 500;
}

/* --- blocks pane --- */
.workspace {
  display: grid;
  flex: 1;
  align-content: start;
  gap: 1.4rem;
  padding: 1.2rem 1rem 1.4rem;
  background-color: var(--bg-page);
  background-image: radial-gradient(circle, hsl(var(--hue) 8% 21%) 1px, transparent 1.5px);
  background-size: 18px 18px;
}

.workspace .blk {
  font-size: 0.875rem;
}

.blk--locked {
  cursor: help;
}

.blk .blk-field input {
  grid-area: 1 / 1;
  width: 0; /* an input's default width must not widen the pill: it takes the width of the hidden text below */
  min-width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: center;
}

.blk .blk-field input:focus {
  outline: none;
}

.blk-field .blk-size {
  grid-area: 1 / 1;
  min-width: 1ch;
  padding-inline-end: 2px; /* room for the caret after the last letter */
  overflow: hidden;
  text-overflow: ellipsis;
  visibility: hidden;
}

.demo .blk-field {
  grid-template-columns: minmax(0, 1fr);
  max-width: min(100%, 14rem);
  cursor: text;
}

.demo .blk-field:focus-within {
  box-shadow: 0 0 0 2px var(--ink-on-block), 0 0 0 4px #fff;
}

.demo .blk.is-linked {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* blocks snap in one after another, then the lines they write fade in with them */
.demo:not(.is-live) .blk {
  animation: snap-in 0.55s cubic-bezier(0.2, 0.8, 0.3, 1) backwards;
  animation-delay: calc(var(--i, 0) * 0.28s + 0.25s);
}

.demo:not(.is-live) .ln {
  animation: line-in 0.4s ease-out backwards;
  animation-delay: calc(var(--i, 0) * 0.28s + 0.4s);
}

[data-block="ready"] {
  --i: 0;
}
[data-block="print"] {
  --i: 1;
}
[data-block="cmd"] {
  --i: 2;
}
[data-block="reply"] {
  --i: 3;
}
[data-block="run"] {
  --i: 4;
}

@keyframes snap-in {
  0% {
    opacity: 0;
    transform: translateY(-1.5rem) rotate(-2.5deg);
  }

  62% {
    opacity: 1;
    transform: translateY(0.2rem);
  }

  100% {
    opacity: 1;
    transform: none;
  }
}

@keyframes line-in {
  from {
    opacity: 0;
    transform: translateX(-0.4rem);
  }
}

/* --- code pane --- */
.pane-code {
  background: hsl(var(--hue) 12% 7%);
}

.pane-code .pane-title {
  background: hsl(var(--hue) 10% 9%);
}

.code {
  flex: 1;
  min-height: 0;
  padding: 0.75rem 0 1rem;
  overflow: auto;
  color: #dcdae4;
  font: 400 0.78rem / 1.55 var(--font-mono);
  tab-size: 4;
  counter-reset: ln;
}

.code:focus-visible {
  outline-offset: -2px;
}

.ln {
  display: block;
  min-height: 1.55em;
  padding-inline-end: 1rem;
  border-inline-start: 2px solid transparent;
  font-size: 1em;
  white-space: pre;
  counter-increment: ln;
  transition: background-color 0.12s;
}

.ln::before {
  content: counter(ln);
  display: inline-block;
  width: 2.5rem;
  padding-inline-end: 1rem;
  color: var(--text-3);
  text-align: end;
}

.ln.is-linked {
  background: rgb(23 109 255 / 0.18);
  border-inline-start-color: var(--accent-hi);
}

.tok-k {
  color: #c9a7ff;
}
.tok-s {
  color: #8fe0a8;
}
.tok-d {
  color: #ffd166;
}
.tok-f {
  color: #7fb7ff;
}
.tok-b {
  color: #7fd8e8;
}
.tok-c {
  color: #9a97a8;
}
.tok-n {
  color: #ffb58a;
}

/* --- chat pane --- */
.chat-log {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  flex: 1;
  height: 8.5rem;
  min-height: 8.5rem;
  max-height: 8.5rem;
  padding: 0.7rem 0.9rem;
  overflow-y: auto;
}

.msg {
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  gap: 0.6rem;
  font-size: var(--fs-sm);
  line-height: 1.4;
}

.msg-avatar {
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--bg-hover);
  color: var(--text-2);
  font-size: 0.95rem;
}

.msg-bot .msg-avatar {
  background: var(--accent-solid);
  color: #fff;
}

.msg-name {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

.msg-tag {
  padding: 0 0.35rem;
  border-radius: 0.25rem;
  background: var(--accent-solid);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  line-height: 1.55;
}

.msg-text {
  color: var(--text);
  overflow-wrap: anywhere;
}

.chat-empty {
  padding-top: 0.4rem;
  color: var(--text-3);
  font-size: var(--fs-sm);
}

.chat-note {
  padding-inline-start: 2.35rem;
  color: var(--text-3);
  font-size: var(--fs-xs);
}

.typing {
  display: inline-flex;
  gap: 0.25rem;
  padding-top: 0.45rem;
}

.typing i {
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--text-3);
  animation: bounce 0.9s ease-in-out infinite;
}

.typing i:nth-child(2) {
  animation-delay: 0.12s;
}

.typing i:nth-child(3) {
  animation-delay: 0.24s;
}

@keyframes bounce {
  50% {
    transform: translateY(-0.25rem);
    opacity: 0.5;
  }
}

.chat-form {
  display: flex;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  border-top: 1px solid var(--line);
}

.chat-input {
  flex: 1;
  min-width: 0;
  min-height: 2.125rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: var(--bg-field);
  color: var(--text);
  font-size: 0.875rem;
}

.chat-input:focus {
  outline: none;
  border-color: var(--accent-hi);
  box-shadow: 0 0 0 3px var(--accent-wash);
}

/* --- console pane (also used by the static example further down) --- */
.pane-console {
  background: hsl(var(--hue) 12% 5%);
}

.pane-console .pane-title {
  background: hsl(var(--hue) 10% 8%);
}

.console {
  padding: 0.55rem 0.9rem 0.8rem;
  overflow-y: auto;
  color: #dcdae4;
  font: 400 0.78rem / 1.55 var(--font-mono);
}

.pane-console .console {
  flex: 1;
  height: 8.5rem;
  min-height: 8.5rem;
  max-height: 8.5rem;
}

.console-empty {
  padding-top: 0.5rem;
  color: var(--text-3);
  font: 400 var(--fs-sm) / 1.5 var(--font-sans);
}

.log {
  display: grid;
  grid-template-columns: 4.1rem minmax(0, 1fr);
  gap: 0.5rem;
  padding-inline-start: 0.5rem;
  border-inline-start: 2px solid transparent;
}

.log time {
  color: var(--text-3);
}

.log span {
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.log-system span {
  color: var(--text-2);
}

.log-warn {
  border-inline-start-color: var(--warn);
}

.log-warn span {
  color: var(--warn);
}

.log-error {
  border-inline-start-color: var(--danger);
}

.log-error span {
  color: var(--danger);
}

/* ---------- sections ---------- */
.band {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.band-raised {
  background: var(--bg-raised);
  border-block: 1px solid var(--line);
}

.band-head {
  max-width: 40rem;
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.band-head h2,
.feature-copy h2,
.cta h2 {
  font-size: var(--fs-3xl);
}

.band-head p,
.feature-copy p,
.cta p {
  margin-top: 0.75rem;
  color: var(--text-2);
  font-size: var(--fs-lg);
}

/* ---------- how it works: a rail of four steps ---------- */
.rail {
  display: grid;
  gap: 2rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 52rem) {
  .rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.rail-step {
  position: relative;
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  column-gap: 1rem;
  align-content: start;
}

.rail-mark {
  grid-row: 1 / span 3;
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 0.85rem;
  background: var(--accent-solid);
  color: #fff;
  font-size: 1.45rem;
  box-shadow: 0 3px 0 var(--accent-lo);
}

.rail-step h3 {
  font-size: var(--fs-lg);
}

.rail-step p {
  color: var(--text-2);
  font-size: var(--fs-sm);
}

.rail-step .rail-count {
  color: var(--text-3);
  line-height: 1.3;
}

/* the line that joins one step to the next (down on small screens, across on wide ones) */
.rail-step:not(:last-child)::before {
  content: "";
  position: absolute;
  inset-inline-start: 1.4375rem;
  top: 3.5rem;
  bottom: -1.5rem;
  width: 2px;
  background: var(--line-strong);
}

@media (min-width: 52rem) {
  .rail-step {
    grid-template-columns: minmax(0, 1fr);
    row-gap: 0.15rem;
  }

  .rail-mark {
    grid-row: auto;
    margin-bottom: 0.9rem;
  }

  .rail-step:not(:last-child)::before {
    inset-inline-start: 3.75rem;
    inset-inline-end: -0.75rem;
    top: 1.4rem;
    bottom: auto;
    width: auto;
    height: 2px;
  }
}

/* ---------- block explorer: a palette on the left, the blocks on the right ---------- */
.explorer {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 52rem) {
  .explorer {
    grid-template-columns: 15rem minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
  }
}

.tabs {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.explorer:not(.is-enhanced) .tabs {
  display: none;
}

.explorer:not(.is-enhanced) .stage {
  display: grid;
  gap: 2.5rem;
  grid-column: 1 / -1;
}

.tab {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.6rem 0.8rem;
  border: 0;
  border-radius: var(--r-md);
  background: transparent;
  color: var(--text-2);
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: start;
  cursor: pointer;
}

.tab:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.tab[aria-selected="true"] {
  background: var(--bg-hover);
  color: #fff;
  box-shadow: inset 3px 0 0 var(--cat);
}

.tab-chip {
  flex: none;
  width: 1rem;
  height: 1rem;
  border-radius: 0.3rem;
  background: var(--cat);
  box-shadow: 0 2px 0 color-mix(in srgb, var(--cat) 58%, #000);
}

@media (max-width: 51.99rem) {
  .tabs {
    flex-direction: row;
    padding-bottom: 0.5rem;
    overflow-x: auto;
  }

  .tab {
    flex: none;
    width: auto;
    white-space: nowrap;
  }

  .tab[aria-selected="true"] {
    box-shadow: inset 0 -3px 0 var(--cat);
  }
}

.stage {
  min-width: 0;
  min-height: 21rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  background-color: var(--bg-page);
  background-image: radial-gradient(circle, hsl(var(--hue) 8% 21%) 1px, transparent 1.5px);
  background-size: 18px 18px;
}

.cat-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--fs-2xl);
}

.cat-title .ph-fill {
  color: var(--cat);
}

.cat-blurb {
  max-width: 34rem;
  margin-top: 0.5rem;
  color: var(--text-2);
}

.cat-blocks {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.1rem;
  margin-top: 1.75rem;
}

.cat-blocks .blk {
  font-size: 1rem;
}

/* ---------- files + console ---------- */
.features {
  display: grid;
  gap: clamp(3rem, 7vw, 5.5rem);
}

.feature {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 52rem) {
  .feature {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 4rem;
  }

  .feature-flip {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .feature-flip .feature-copy {
    order: 2;
  }
}

.feature-copy p {
  max-width: 32rem;
}

.mock {
  min-width: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-lg);
  background: var(--bg-panel);
  box-shadow: 0 24px 50px -26px rgb(0 0 0 / 0.75);
  overflow: hidden;
}

.mock-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--line);
  color: var(--text-2);
  font-size: var(--fs-sm);
  font-weight: 600;
}

.mock-head .ph-fill {
  color: var(--text-3);
}

.mock-filters {
  display: inline-flex;
  gap: 0.2rem;
  margin-inline-start: auto;
  font-size: var(--fs-xs);
  font-weight: 500;
}

.mock-filters span {
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
  color: var(--text-3);
}

.mock-filters .is-on {
  background: var(--bg-hover);
  color: var(--text);
}

.asset-list {
  display: grid;
  gap: 0.15rem;
  margin: 0;
  padding: 0.5rem;
  list-style: none;
}

.asset-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.6rem;
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
}

.asset-list .ph-fill {
  color: var(--cat-data);
  font-size: 1.35rem;
}

.asset-name {
  flex: 1;
  font-weight: 500;
}

.asset-size {
  color: var(--text-3);
  font-size: var(--fs-xs);
}

.drop {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin: 0.25rem 0.9rem 1rem;
  padding: 0.9rem;
  border: 1.5px dashed var(--line-strong);
  border-radius: var(--r-md);
  color: var(--text-2);
  font-size: var(--fs-sm);
}

.mock-blocks {
  display: grid;
  gap: 1rem;
  justify-items: start;
  padding: 1.25rem 1rem 1.4rem;
  border-top: 1px solid var(--line);
  background-color: var(--bg-page);
  background-image: radial-gradient(circle, hsl(var(--hue) 8% 21%) 1px, transparent 1.5px);
  background-size: 18px 18px;
}

.mock-blocks .blk {
  font-size: 0.875rem;
}

.mock .console {
  background: hsl(var(--hue) 12% 5%);
}

/* ---------- safety: a plain ruled list ---------- */
.safety {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 52rem) {
  .safety {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 4rem;
  }
}

.safety li {
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  gap: 1rem;
  padding-block: 1.4rem;
  border-top: 1px solid var(--line-strong);
}

.safety .ph-fill {
  margin-top: 0.1rem;
  color: var(--accent-hi);
  font-size: 1.5rem;
}

.safety h3 {
  font-size: var(--fs-lg);
}

.safety p {
  margin-top: 0.3rem;
  color: var(--text-2);
}

.safety-more {
  margin-top: 1.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line-strong);
}

/* ---------- closing call to action ---------- */
.cta {
  position: relative;
  z-index: 1;
  padding-block: clamp(3.5rem, 9vw, 6.5rem);
  border-top: 1px solid var(--line);
  text-align: center;
}

.cta-inner {
  display: grid;
  justify-items: center;
  gap: 0.25rem;
}

.cta p {
  max-width: 30rem;
  margin-bottom: 1.5rem;
}

/* a quiet line under the button: where to ask for help */
.cta .cta-community {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  max-width: 34rem;
  margin: 1.5rem 0 0;
  color: var(--text-3);
  font-size: var(--fs-md);
  text-align: start;
}

.cta .cta-community .ph-fill {
  flex: none;
  font-size: 1.35rem;
  color: var(--accent-hi);
}

/* the bump from the logo, hanging off the bottom edge */
.cta::after {
  content: "";
  position: absolute;
  inset-inline-start: 50%;
  bottom: -0.95rem;
  width: 3rem;
  height: 1rem;
  margin-inline-start: -1.5rem;
  background: var(--accent-solid);
  clip-path: polygon(0 0, 100% 0, 82% 100%, 18% 100%);
}

@media (prefers-reduced-motion: reduce) {
  .demo .blk,
  .demo .ln,
  .demo-btn.is-hint {
    animation: none !important;
  }
}