/* vibedesign.tips: the home page and each tip's page. Lumno cream, light only. */

@font-face {
  font-family: 'Lumno Open Sans';
  src: url('/_base/fonts/OpenSans-VariableFont-wdth-wght.woff2') format('woff2');
  font-weight: 300 800;
  font-stretch: 75% 100%;
  font-display: swap;
}

:root {
  --paper: #f5f2e9;
  --paper-deep: #ece8dc;
  --card: #ffffff;
  --ink: #14161b;
  --ink-soft: #5b616e;
  --ink-faint: #8b919c;
  --line: rgba(20, 22, 27, 0.09);
  --accent-ink: linear-gradient(100deg, #6a5a3c 0%, #a08559 45%, #5f6f86 100%);
  --sans: 'Lumno Open Sans', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --accent: 'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --mono: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, monospace;
  --gutter: clamp(16px, 4vw, 48px);
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  color-scheme: light;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

em {
  padding: 0 0.06em 0.08em 0.02em;
  font-family: var(--accent);
  font-size: 1.12em;
  font-style: italic;
  font-weight: 600;
  letter-spacing: -0.01em;
  background: var(--accent-ink);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Home ---------- */

.home {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(56px, 10vw, 120px) var(--gutter) 40px;
}

.hero { max-width: 760px; margin-bottom: clamp(48px, 7vw, 88px); }

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(44px, 7vw, 76px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.hero-series {
  margin: 0 0 14px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 600;
}

.hero-lede {
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 16px;
  text-wrap: pretty;
}

.hero-en { color: var(--ink-faint); font-size: 15px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: clamp(32px, 4vw, 48px) clamp(16px, 2.4vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.card {
  display: block;
  text-decoration: none;
  outline: none;
}

.card-poster {
  display: block;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 20px;
  background: var(--paper-deep);
  box-shadow: 0 0 0 1px var(--line);
  transition: transform 220ms var(--ease-out), box-shadow 220ms var(--ease-out);
}

.card-poster img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card:hover .card-poster,
.card:focus-visible .card-poster {
  transform: translateY(-4px);
  box-shadow: 0 0 0 1px var(--line), 0 18px 40px -16px rgba(30, 36, 50, 0.28);
}

.card:focus-visible .card-poster { box-shadow: 0 0 0 2px var(--ink), 0 18px 40px -16px rgba(30, 36, 50, 0.28); }

.card-meta {
  display: flex;
  gap: 10px;
  align-items: baseline;
  margin-top: 16px;
  color: var(--ink-faint);
  font-size: 14px;
}

.card-issue { font-family: var(--mono); font-size: 13px; font-weight: 500; }

.card-title {
  display: block;
  margin-top: 2px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
}

/* ---------- Tip page ---------- */

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1320px;
  margin: 0 auto;
  padding: 20px var(--gutter);
  font-size: 15px;
}

.topbar a { color: var(--ink-soft); text-decoration: none; }
.topbar a:hover { color: var(--ink); }
.topbar .topbar-home { color: var(--ink); font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }

.tip {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
  max-width: 1320px;
  margin: 0 auto;
  padding: 12px var(--gutter) 40px;
}

.demo {
  position: sticky;
  top: 24px;
  margin: 0;
}

.demo-frame {
  aspect-ratio: 3 / 4;
  max-height: calc(100vh - 96px);
  margin: 0 auto;
  overflow: hidden;
  border-radius: 24px;
  background: var(--paper-deep);
  box-shadow: 0 0 0 1px var(--line);
}

.demo-frame iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.demo figcaption {
  margin-top: 12px;
  font-size: 14px;
  text-align: center;
}

.demo figcaption a { color: var(--ink-faint); text-decoration: none; }
.demo figcaption a:hover { color: var(--ink); }

.detail { padding-top: clamp(0px, 3vw, 40px); }

.detail-issue {
  margin: 0 0 12px;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
}

.detail h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.detail-desc {
  margin: 0 0 36px;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.75;
  text-align: justify;
  text-wrap: pretty;
}

.prompt {
  padding: 20px;
  border-radius: 20px;
  background: var(--card);
  box-shadow: 0 0 0 1px var(--line);
}

.prompt header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.prompt h2 { margin: 0; font-size: 17px; font-weight: 700; }

.prompt-note { margin: 4px 0 14px; color: var(--ink-faint); font-size: 14px; }

.copy {
  min-width: 76px;
  height: 36px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font: 600 14px/1 var(--sans);
  cursor: pointer;
  transition: transform 120ms var(--ease-out), background-color 160ms ease;
}

.copy:hover { background: #2b2f38; }
.copy:active { transform: scale(0.96); }
.copy:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.copy[data-done] { background: #2f6b4f; }

.prompt pre {
  max-height: 440px;
  margin: 0;
  padding: 16px;
  overflow: auto;
  border-radius: 12px;
  background: #f7f6f2;
  color: #2a2d34;
  font: 12.5px/1.65 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.prompt pre:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

.skill { margin: 16px 4px 0; font-size: 14px; }
.skill a { color: var(--ink-soft); }
.skill a:hover { color: var(--ink); }

.pager {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.pager a {
  display: block;
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.pager a span {
  display: block;
  color: var(--ink-faint);
  font-size: 13px;
  font-weight: 500;
}

.pager a:hover { color: var(--ink-soft); }
.pager-next { text-align: right; }

/* ---------- Footer and 404 ---------- */

.site-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  max-width: 1320px;
  margin: 0 auto;
  padding: 40px var(--gutter) 56px;
  color: var(--ink-faint);
  font-size: 14px;
}

.site-foot p { margin: 0; }
.site-foot a { margin-left: 20px; color: var(--ink-soft); text-decoration: none; }
.site-foot a:first-child { margin-left: 0; }
.site-foot a:hover { color: var(--ink); }

.missing { padding: 20vh var(--gutter); text-align: center; }
.missing h1 { margin: 0 0 12px; font-size: 32px; }

/* ---------- Narrow screens ---------- */

@media (max-width: 860px) {
  .tip { grid-template-columns: minmax(0, 1fr); }
  .demo { position: static; }
  .demo-frame { max-height: none; }
  .detail-desc { text-align: start; }
}

@media (max-width: 560px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 12px; }
  .card-poster { border-radius: 14px; }
  .card-meta { margin-top: 10px; font-size: 12px; gap: 6px; }
  .card-name { display: none; }
  .card-title { font-size: 15px; }
  .prompt { padding: 16px; }
  .pager { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .card-poster, .copy { transition: none; }
  .card:hover .card-poster, .card:focus-visible .card-poster { transform: none; }
}