/*
 * Perxona Connect Kit — 對外介紹頁。
 *
 * 作品在最上面，截圖說明它是什麼；介紹與說明排在後面。分隔用髮絲線，
 * 層級用字級與留白。每個作品各自帶一個重點色，頁面本身沒有主色——
 * 主角是作品，不是這張頁面。作品清單是 grid，多一個就多一格。
 *
 * 深淺兩套色票都定義在 :root 上，`prefers-color-scheme` 提供預設，
 * `[data-theme]` 讓手動切換蓋過系統設定（兩個方向都要蓋得掉）。
 */

:root {
  --paper: #fbfaf8;
  --ink: #17171a;
  --ink-soft: #55555c;
  --ink-faint: #8b8b93;
  --rule: #e4e1db;
  --rule-strong: #cfcbc3;
  --tarot: #2f6b34;
  --dating: #a8365c;
  --rageroom: #5b3dc9;
  --manabi: #0f7a6c;
  --antifraud: #c2410c;
  --interview: #1f6feb;
  --code-bg: rgba(23, 23, 26, 0.055);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f0f12;
    --ink: #eceaea;
    --ink-soft: #a5a5ad;
    --ink-faint: #76767f;
    --rule: #26262c;
    --rule-strong: #3a3a43;
    --tarot: #8ede6c;
    --dating: #ff92b3;
    --rageroom: #b9a3ff;
    --manabi: #5eead4;
    --antifraud: #ffb37a;
    --interview: #79c0ff;
    --code-bg: rgba(236, 234, 234, 0.08);
  }
}

:root[data-theme="dark"] {
  --paper: #0f0f12;
  --ink: #eceaea;
  --ink-soft: #a5a5ad;
  --ink-faint: #76767f;
  --rule: #26262c;
  --rule-strong: #3a3a43;
  --tarot: #8ede6c;
  --dating: #ff92b3;
  --rageroom: #b9a3ff;
  --manabi: #5eead4;
  --antifraud: #ffb37a;
  --interview: #79c0ff;
  --code-bg: rgba(236, 234, 234, 0.08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  color-scheme: light dark;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.95;
  -webkit-font-smoothing: antialiased;
  padding: 0 24px 96px;
}

code {
  background: var(--code-bg);
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 0.87em;
  padding: 2px 6px;
  white-space: nowrap;
}

/* One column for everything, wide enough for two screenshots side by side.
   Prose caps itself with max-width on the text, not on the section, so the
   hairline rules above each heading all run the same width. */
.masthead,
main > section {
  margin: 0 auto;
  max-width: 1040px;
}

/* ── Masthead ─────────────────────────────────────────────────────────── */

.masthead {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 40px 0 0;
}

.wordmark {
  align-items: center;
  display: flex;
  gap: 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.wordmark span {
  color: var(--ink-faint);
  font-weight: 500;
  white-space: nowrap;
}

/* Two logo files, one per theme; same override order as the colour tokens. */
.wordmark__logo {
  height: 22px;
  width: auto;
}

.wordmark__logo--white {
  display: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .wordmark__logo--black {
    display: none;
  }

  :root:not([data-theme="light"]) .wordmark__logo--white {
    display: block;
  }
}

:root[data-theme="dark"] .wordmark__logo--black {
  display: none;
}

:root[data-theme="dark"] .wordmark__logo--white {
  display: block;
}

.controls {
  align-items: center;
  display: flex;
  gap: 10px;
}

/* Three small buttons in one pill; the current language is filled in. */
.lang {
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  display: inline-flex;
  overflow: hidden;
}

.lang__btn {
  background: none;
  border: 0;
  color: var(--ink-soft);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  line-height: 1;
  padding: 8px 12px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.lang__btn + .lang__btn {
  border-left: 1px solid var(--rule-strong);
}

.lang__btn:hover {
  color: var(--ink);
}

.lang__btn.is-on {
  background: var(--ink);
  color: var(--paper);
}

.toggle {
  align-items: center;
  background: none;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  color: var(--ink-soft);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 13px;
  gap: 7px;
  line-height: 1;
  padding: 7px 13px 7px 11px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.toggle:hover {
  border-color: var(--ink-soft);
  color: var(--ink);
}

.toggle__dot {
  background: currentColor;
  border-radius: 50%;
  height: 9px;
  width: 9px;
}

:root[data-theme="dark"] .toggle__dot,
:root:not([data-theme="light"]) .toggle__dot {
  background: none;
  box-shadow: inset 0 0 0 1.5px currentColor;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .toggle__dot {
    background: currentColor;
    box-shadow: none;
  }
}

:root[data-theme="light"] .toggle__dot {
  background: currentColor;
  box-shadow: none;
}

/* ── Shared section heading ───────────────────────────────────────────── */

main h2 {
  border-top: 1px solid var(--rule);
  color: var(--ink-faint);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  padding-top: 18px;
  text-transform: uppercase;
}

/* ── Works ────────────────────────────────────────────────────────────── */

.works {
  padding-top: 40px;
}

.work-list {
  display: grid;
  gap: 40px 32px;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr));
  list-style: none;
  margin-top: 26px;
}

.work {
  color: inherit;
  display: block;
  text-decoration: none;
}

.work--tarot {
  --accent: var(--tarot);
}

.work--dating {
  --accent: var(--dating);
}

.work--rageroom {
  --accent: var(--rageroom);
}

.work--manabi {
  --accent: var(--manabi);
}

.work--antifraud {
  --accent: var(--antifraud);
}

.work--interview {
  --accent: var(--interview);
}

.work__shot {
  aspect-ratio: 16 / 10;
  background: var(--code-bg);
  border: 1px solid var(--rule);
  border-radius: 10px;
  display: block;
  height: auto;
  object-fit: cover;
  transition: border-color 0.18s ease, transform 0.18s ease;
  width: 100%;
}

.work:hover .work__shot {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.work__body {
  padding-top: 18px;
}

.work__body h3 {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.work__en {
  color: var(--ink-faint);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  margin-left: 7px;
}

.work__lede {
  color: var(--ink-soft);
  margin-top: 8px;
}

.work__go {
  color: var(--accent);
  display: inline-block;
  font-size: 14.5px;
  font-weight: 700;
  margin-top: 12px;
}

.work__go::after {
  content: " →";
  transition: margin-left 0.18s ease;
}

.work:hover .work__go::after {
  margin-left: 4px;
}

/* ── Closing ──────────────────────────────────────────────────────────── */

.cta {
  padding-top: 84px;
}

.cta p {
  color: var(--ink-soft);
  margin-top: 24px;
  max-width: 36em;
}

.cta__link {
  border-bottom: 1px solid var(--rule-strong);
  color: var(--ink);
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 15px;
  margin-top: 20px;
  padding-bottom: 3px;
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.cta__link:hover {
  border-color: var(--ink);
}

/* ── Narrow ───────────────────────────────────────────────────────────── */

@media (max-width: 560px) {
  body {
    padding: 0 20px 72px;
  }

  .wordmark {
    gap: 8px;
    letter-spacing: 0.08em;
  }

  .wordmark__logo {
    height: 17px;
  }

  .works {
    padding-top: 32px;
  }

  .work-list {
    gap: 32px;
  }

  .cta {
    padding-top: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}