/* /workshop-start, /workshop-kit and /workshop-builder. Look borrowed from vlad.ro/matsuyama: dark green, mint glow, seigaiha waves, scanlines. */
:root {
  --bg: #020706;
  --ink: #effff8;
  --mint: #a6ffdb;
  --glow: #3dffb4;
  --wave: #0b2a20;
  --dim: rgba(166, 255, 219, 0.55);
  --line: rgba(166, 255, 219, 0.22);
  --field: rgba(166, 255, 219, 0.05);
  --progress: 0;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
html {
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  color: var(--ink);
  background: var(--bg);
  font-family: "Red Hat Display", "Avenir Next", "Avenir", "Hiragino Sans", "Noto Sans JP", "Segoe UI", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}
:lang(ja) {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  word-break: auto-phrase;
}
.ws-bg, .ws-glow, .ws-lines {
  position: fixed;
  inset: 0;
  pointer-events: none;
}
.ws-bg {
  z-index: 0;
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 100% 150%, var(--bg) 24%, var(--wave) 24%, var(--wave) 28%, var(--bg) 28%, var(--bg) 36%, var(--wave) 36%, var(--wave) 40%, transparent 40%, transparent),
    radial-gradient(circle at 0 150%, var(--bg) 24%, var(--wave) 24%, var(--wave) 28%, var(--bg) 28%, var(--bg) 36%, var(--wave) 36%, var(--wave) 40%, transparent 40%, transparent),
    radial-gradient(circle at 50% 100%, var(--wave) 10%, var(--bg) 10%, var(--bg) 23%, var(--wave) 23%, var(--wave) 30%, var(--bg) 30%, var(--bg) 43%, var(--wave) 43%, var(--wave) 50%, var(--bg) 50%, var(--bg) 63%, var(--wave) 63%, var(--wave) 71%, transparent 71%, transparent),
    radial-gradient(circle at 100% 50%, var(--wave) 5%, var(--bg) 5%, var(--bg) 15%, var(--wave) 15%, var(--wave) 20%, var(--bg) 20%, var(--bg) 29%, var(--wave) 29%, var(--wave) 34%, var(--bg) 34%, var(--bg) 44%, var(--wave) 44%, var(--wave) 49%, transparent 49%, transparent),
    radial-gradient(circle at 0 50%, var(--wave) 5%, var(--bg) 5%, var(--bg) 15%, var(--wave) 15%, var(--wave) 20%, var(--bg) 20%, var(--bg) 29%, var(--wave) 29%, var(--wave) 34%, var(--bg) 34%, var(--bg) 44%, var(--wave) 44%, var(--wave) 49%, transparent 49%, transparent);
  background-size: 120px 60px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 35%, transparent 20%, #000 85%);
  mask-image: radial-gradient(ellipse at 50% 35%, transparent 20%, #000 85%);
  animation: drift 60s linear infinite;
}
.ws-glow {
  z-index: 1;
  background: radial-gradient(ellipse 60% 40% at 50% 20%, rgba(61, 255, 180, 0.14), rgba(61, 255, 180, 0.03) 55%, transparent 75%);
  animation: pulse 7s ease-in-out infinite;
}
.ws-lines {
  z-index: 3;
  background: repeating-linear-gradient(to bottom, transparent 0, transparent 3px, rgba(0, 0, 0, 0.22) 3px, rgba(0, 0, 0, 0.22) 4px);
}
.ws-main {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 36rem;
  margin: 0 auto;
  padding: calc(1.5rem + env(safe-area-inset-top)) 1rem 7rem;
}
.ws-lang {
  display: flex;
  justify-content: flex-end;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
}
.ws-head {
  text-align: center;
  margin-bottom: 2.5rem;
}
.ws-title {
  margin: 0;
  font-size: clamp(2.5rem, 11vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
  color: var(--ink);
  text-shadow:
    0 0 0.03em #fff,
    0 0 0.1em var(--mint),
    0 0 0.3em var(--glow),
    0 0 0.8em rgba(61, 255, 180, 0.45),
    0 0 1.6em rgba(61, 255, 180, 0.25);
}
.ws-title:lang(ja), .ws-title:lang(ko), .ws-title:lang(zh-Hant) {
  letter-spacing: 0;
  font-size: clamp(2rem, 9vw, 3.5rem);
  word-break: keep-all;
  line-break: strict;
}
.ws-desc {
  margin: 1.25rem auto 0;
  max-width: 30rem;
  color: var(--ink);
  opacity: 0.85;
  white-space: pre-line;
}
.ws-field {
  margin: 0 0 1.5rem;
}
.ws-field label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--mint);
}
.ws-field input, .ws-field textarea {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--field);
  color: var(--ink);
  font: inherit;
  line-height: 1.5;
  caret-color: var(--glow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.ws-field textarea {
  min-height: 6rem;
  resize: none;
  overflow: hidden;
  field-sizing: content;
}
.ws-field input:focus, .ws-field textarea:focus {
  outline: none;
  border-color: var(--glow);
  box-shadow: 0 0 0 1px var(--glow), 0 0 18px rgba(61, 255, 180, 0.35);
}
.ws-error {
  margin: 0 0 1.25rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid rgba(255, 157, 157, 0.5);
  border-radius: 0.5rem;
  background: rgba(255, 157, 157, 0.08);
  color: #ffd1d1;
  font-size: 0.95rem;
}
.ws-button {
  appearance: none;
  display: inline-block;
  width: 100%;
  padding: 0.9rem 1.5rem;
  border: 0;
  border-radius: 0.5rem;
  background: var(--mint);
  color: var(--bg);
  font: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  box-shadow: 0 0 18px rgba(61, 255, 180, 0.35);
  transition: box-shadow 0.2s ease, transform 0.1s ease;
}
.ws-button:hover, .ws-button:focus-visible {
  outline: none;
  box-shadow: 0 0 28px rgba(61, 255, 180, 0.6);
}
.ws-button:active {
  transform: translateY(1px);
}
.ws-button:disabled {
  opacity: 0.6;
  cursor: wait;
}
.ws-button--ghost {
  width: auto;
  background: none;
  color: var(--mint);
  border: 1px solid var(--line);
  box-shadow: none;
  font-weight: 500;
}
.ws-hud {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 2.5rem 1.5rem calc(1.25rem + env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--bg) 40%, transparent);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--dim);
  pointer-events: none;
}
.ws-hud span {
  white-space: nowrap;
}
.ws-hud-bar {
  position: relative;
  flex: 1;
  height: 1px;
  background: rgba(166, 255, 219, 0.15);
}
.ws-hud-bar span {
  position: absolute;
  inset: 0;
  background: var(--mint);
  box-shadow: 0 0 8px var(--glow);
  transform: scaleX(var(--progress));
  transform-origin: left;
  transition: transform 0.6s ease;
}

/* Form bits shared with the skill builder */
.ws-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 1.25rem;
}
.ws-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.5rem;
}
.ws-remove {
  appearance: none;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: none;
  color: var(--dim);
  font: inherit;
  font-size: 0.8rem;
  white-space: nowrap;
  cursor: pointer;
}

@keyframes pulse {
  0%, 100% { opacity: 0.75; }
  50% { opacity: 1; }
}
@keyframes drift {
  to { background-position: 120px 0; }
}
@media (min-width: 640px) {
  .ws-main {
    padding-top: calc(3rem + env(safe-area-inset-top));
  }
  .ws-button {
    width: auto;
    min-width: 12rem;
  }
  .ws-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ws-bg, .ws-glow { animation: none; }
  .ws-hud-bar span { transition: none; }
}

/* Slides (/workshop-start): every slide on one scrolling page */
.ws-main--slides {
  max-width: 72rem;
  padding-bottom: 5rem;
}
.slide {
  display: grid;
  align-content: center;
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  padding: 4rem 0;
  text-align: center;
}
.slide + .slide {
  border-top: 1px solid var(--line);
}
.slide-kicker {
  margin: 0 0 1rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  text-wrap: balance;
  color: var(--dim);
}
.slide-text {
  max-width: 34rem;
  margin: 0.75rem auto 0;
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  line-height: 1.45;
  text-wrap: pretty;
}
.slide-text a {
  color: var(--mint);
  text-decoration: none;
  text-shadow: 0 0 0.4em rgba(61, 255, 180, 0.5);
}
.slide-qr {
  display: inline-block;
  margin: 2rem auto 0;
  padding: 4%;
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0 0 2em rgba(61, 255, 180, 0.4);
}
.slide-qr img {
  display: block;
  width: min(78vw, 45vh, 30rem);
  height: auto;
}
.slide-url {
  margin: 2rem 0 0;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: clamp(1.4rem, 5.2vw, 4.2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.1;
  white-space: nowrap;
  color: var(--ink);
  text-shadow:
    0 0 0.03em #fff,
    0 0 0.1em var(--mint),
    0 0 0.3em var(--glow),
    0 0 0.8em rgba(61, 255, 180, 0.45);
}
@media (min-width: 900px) {
  .slide--intro {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 3rem 4rem;
    text-align: left;
  }
  .slide--intro .slide-text {
    margin-left: 0;
  }
  .slide--intro .slide-qr {
    margin-top: 0;
  }
  .slide--intro .slide-qr img {
    width: min(52vh, 36vw, 30rem);
  }
  .slide--intro .slide-url {
    grid-column: 1 / -1;
    text-align: center;
    margin-top: 0;
  }
}

/* Slide content blocks, also used by /workshop-kit */
.slide-h {
  font-size: clamp(2rem, 5.5vw, 4rem);
  margin-bottom: 0.5rem;
  color: var(--mint);
  text-shadow: 0 0 0.12em rgba(166, 255, 219, 0.35), 0 0 0.6em rgba(61, 255, 180, 0.2);
}
.slide a, .kit a {
  color: var(--mint);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
.slide-url a {
  text-decoration: none;
}
.slide-code {
  max-width: 48rem;
  margin: 1.25rem auto 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(0, 0, 0, 0.45);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: clamp(0.8rem, 1.55vw, 1.05rem);
  line-height: 1.5;
  text-align: left;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--ink);
}
.slide-code:lang(ja) {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", ui-monospace, Menlo, monospace;
}
.slide-code:lang(ko) {
  font-family: "Apple SD Gothic Neo", "Noto Sans KR", ui-monospace, Menlo, monospace;
}
.slide-code:lang(zh-Hant) {
  font-family: "PingFang TC", "Hiragino Sans CNS", "Noto Sans TC", ui-monospace, Menlo, monospace;
}
.slide--intro .slide-code {
  margin-left: 0;
}
.l {
  display: none;
}
html:not([data-lang]) .l.en,
html[data-lang="en"] .l.en, html[data-lang="ja"] .l.ja, html[data-lang="ko"] .l.ko, html[data-lang="it"] .l.it, html[data-lang="zh"] .l.zh {
  display: block;
}
.ws-lang--select {
  position: relative;
}
.ws-lang--select::after {
  content: "";
  position: absolute;
  right: 0.9rem;
  top: 50%;
  width: 0.45rem;
  height: 0.45rem;
  margin-top: -0.4rem;
  border-right: 1px solid var(--mint);
  border-bottom: 1px solid var(--mint);
  transform: rotate(45deg);
  pointer-events: none;
}
.ws-lang-select {
  appearance: none;
  -webkit-appearance: none;
  margin: 0;
  padding: 0.35rem 2rem 0.35rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(2, 7, 6, 0.6);
  color: var(--mint);
  font: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-shadow: 0 0 0.4em rgba(61, 255, 180, 0.5);
  cursor: pointer;
}
.ws-lang-select:focus-visible {
  outline: 1px solid var(--mint);
  outline-offset: 2px;
}
.ws-lang-select option {
  color: var(--ink);
  background: var(--bg);
  text-shadow: none;
}
:lang(ko) {
  font-family: "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", system-ui, sans-serif;
  word-break: keep-all;
}
:lang(zh-Hant) {
  font-family: "PingFang TC", "Hiragino Sans CNS", "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
}
.ws-main--slides :lang(ja), .kit :lang(ja), .ws-main--slides :lang(ko), .kit :lang(ko), .ws-main--slides :lang(zh-Hant), .kit :lang(zh-Hant) {
  word-break: normal;
  line-break: normal;
}
.slide-list li, .slide-steps li, .slide-text, .slide-note, .slide-card p, .slide-h, .slide-kicker {
  min-width: 0;
  overflow-wrap: anywhere;
  text-wrap: pretty;
}
.ws-lang--fixed {
  position: fixed;
  top: calc(0.75rem + env(safe-area-inset-top));
  right: 0.75rem;
  z-index: 5;
  margin: 0;
}
.ws-main--slides .l {
  width: 100%;
}
.slide-blank {
  margin: 1.5rem 0 0;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: clamp(1.4rem, 4.5vw, 3rem);
  color: var(--mint);
  text-shadow: 0 0 0.4em rgba(61, 255, 180, 0.5);
}
.slide-list, .slide-steps {
  list-style: none;
  padding: 0;
  margin: 1.5rem auto 0;
  max-width: 44rem;
  text-align: left;
  font-size: clamp(1.05rem, 2.2vw, 1.55rem);
  line-height: 1.4;
}
.slide-list li, .slide-steps li {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 0.55rem 0;
  border-top: 1px solid var(--line);
}
.slide-list li:first-child, .slide-steps li:first-child {
  border-top: 0;
}
.slide-list li::before {
  content: "";
  flex: none;
  margin: calc(0.7em - 0.275rem) 0 0 0.2rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 8px var(--glow);
}
.slide-steps {
  counter-reset: step;
}
.slide-steps li::before {
  counter-increment: step;
  content: counter(step);
  flex: none;
  margin-top: calc(0.7em - 0.9rem);
  width: 1.8rem;
  height: 1.8rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.8rem;
  text-align: center;
  color: var(--mint);
}
.slide-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.5rem auto 0;
  max-width: 64rem;
}
.slide-card {
  padding: 1rem 1.25rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--field);
  text-align: left;
}
.slide-card h3 {
  margin: 0 0 0.4rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint);
}
.slide-card p {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.3rem);
  line-height: 1.4;
}
.slide-card .slide-list, .slide-card .slide-steps {
  margin-top: 0.25rem;
  font-size: clamp(1rem, 1.9vw, 1.3rem);
}
.slide-card .slide-list li {
  padding: 0.35rem 0;
  gap: 0.7rem;
}
.slide-card--note {
  margin: 1rem auto 0;
  max-width: 44rem;
}
.slide-note {
  max-width: 44rem;
  margin: 1.5rem auto 0;
  color: var(--dim);
  font-size: clamp(0.95rem, 1.8vw, 1.2rem);
}
.slide-url--small {
  margin-top: 1.5rem;
  font-size: clamp(1.2rem, 3.2vw, 2.4rem);
}
.slide--intro .slide-list {
  margin-left: 0;
}
.kit {
  max-width: 40rem;
  padding-bottom: 6rem;
}
.kit .ws-head {
  margin-bottom: 1.5rem;
}
.kit .slide-card {
  margin-top: 1rem;
}
.kit .slide-card p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
}
.kit .slide-note {
  font-size: 0.95rem;
  text-align: left;
}
@media (min-width: 720px) {
  .slide-cols {
    grid-template-columns: 1fr 1fr;
  }
  .slide-cols--3 {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.slide-qa {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
}
.slide-qa + .slide-qa {
  margin-top: 0.35rem;
}
.slide-qa span {
  flex: none;
  min-width: 1.4rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.9;
  letter-spacing: 0.1em;
  color: var(--mint);
}
.slide-qa--wrong span {
  color: #ff9c9c;
}

/* Prompt tools, copy feedback, skill builder */
.slide-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  max-width: 48rem;
  margin: 0.5rem auto 0;
}
.slide--intro .slide-tools {
  justify-content: flex-start;
  margin-left: 0;
}
.slide-tools .ws-remove {
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}
.slide-code {
  cursor: copy;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.slide-code.is-copied {
  border-color: var(--mint);
  box-shadow: 0 0 0.8em rgba(61, 255, 180, 0.35);
}
.ws-toast {
  position: fixed;
  left: 50%;
  bottom: 5rem;
  z-index: 6;
  padding: 0.5rem 1rem;
  border: 1px solid var(--mint);
  border-radius: 999px;
  background: var(--bg);
  color: var(--mint);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  opacity: 0;
  transform: translate(-50%, 1rem);
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
}
.ws-toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
}
.ws-offscreen {
  position: fixed;
  top: -1000px;
  left: -1000px;
  opacity: 0;
}
.builder {
  max-width: 48rem;
}
.builder .ws-head {
  margin-bottom: 1.25rem;
}
.builder .ws-desc {
  margin-top: 0.75rem;
}
.builder-presets {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.6rem;
  margin: 0 0 1.5rem;
  font-size: 0.85rem;
  color: var(--dim);
}
.builder-presets a {
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--mint);
  text-decoration: none;
}
.builder-presets a.is-current {
  background: var(--mint);
  border-color: var(--mint);
  color: var(--bg);
}
.builder .ws-field textarea {
  min-height: 7rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}
.builder .slide-card {
  margin-top: 1.25rem;
}
.builder .slide-card .ws-field {
  margin-bottom: 0.75rem;
}
.builder-actions {
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.builder-actions .ws-button {
  width: auto;
  min-width: 0;
  padding: 0.8rem 1.1rem;
}
.builder-preview {
  max-width: none;
  margin: 0;
  font-size: 0.85rem;
}
.builder .slide-note {
  margin-top: 1rem;
  text-align: left;
}
.builder-phone {
  color: var(--mint);
}