/* The AI Mastery Vault: same brand tokens as storein3days.com/launch/ (black, charcoal, lime, Inter Tight) */
:root {
  --black: #080808;
  --black-2: #0B0B0B;
  --panel: #111113;
  --panel-2: #161618;
  --lime: #D3FE01;
  --border-dark: #26262A;
  --border-2: #2E2E32;
  --text: #fff;
  --text-light: #D6D6D8;
  --sub: #C8C8CB;
  --grey: #7C7C80;
  --hgrey: #B3B3B6;
  --mark-bg: rgba(255, 221, 0, .16);
  --mark: #FFE14D;
  --radius: 10px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--black); color: var(--text-light);
  font-family: "Inter Tight", system-ui, sans-serif; font-size: 16px; line-height: 1.6; letter-spacing: -.01em;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.wrap { width: min(1240px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(820px, 100% - 32px); margin-inline: auto; }

/* Top bar */
.topbar { position: sticky; top: 0; z-index: 30; background: rgba(0, 0, 0, .82); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-dark); }
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 68px; }
.brand { font-weight: 600; font-size: 15px; letter-spacing: .14em; text-decoration: none; white-space: nowrap; color: #fff; }
.brand span { color: var(--lime); }
.nav { display: flex; gap: 28px; font-size: 15px; color: var(--hgrey); }
.nav a { text-decoration: none; transition: color .2s; }
.nav a:hover { color: #fff; }

/* Buttons: lime, 4px radius, like /launch/ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 42px; padding: 0 18px; white-space: nowrap; border: 0; border-radius: 4px;
  background: var(--lime); color: #000; text-decoration: none;
  font: 500 15px "Inter Tight", system-ui, sans-serif; letter-spacing: -.01em;
  cursor: pointer; transition: transform .2s ease, filter .2s ease;
}
.btn:hover { filter: brightness(1.06); transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(.98); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Hero: charcoal spotlight */
.hero {
  text-align: center; padding: 88px 0 72px;
  background: radial-gradient(65% 60% at 50% 40%, #3D3D41 0%, #26262A 40%, #121213 75%, var(--black) 100%);
}
.badge { display: inline-flex; padding: 6px 16px; border-radius: 999px; font-size: 14px; color: #CFCFD2; background: #141416; border: 1px solid var(--border-2); }
.hero h1 {
  color: #fff; font-weight: 400; letter-spacing: -.05em;
  font-size: clamp(40px, 7vw, 84px); line-height: 1.02; margin: 24px auto 20px; max-width: 980px; text-wrap: balance;
}
.hero h1 .hl { color: var(--lime); }
.hero .sub { color: var(--sub); font-size: clamp(17px, 2vw, 21px); max-width: 640px; margin: 0 auto 36px; text-wrap: balance; }
.search { position: relative; max-width: 580px; margin: 0 auto; }
.search svg { position: absolute; left: 18px; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--grey); pointer-events: none; }
.search input {
  width: 100%; height: 56px; padding: 0 18px 0 48px; border-radius: 8px;
  background: rgba(8, 8, 8, .75); border: 1px solid var(--border-2); color: #fff;
  font: 400 16px "Inter Tight", system-ui, sans-serif; outline: none; transition: border-color .2s, box-shadow .2s;
}
.search input::placeholder { color: var(--grey); }
.search input:focus { border-color: var(--lime); box-shadow: 0 0 0 3px rgba(211, 254, 1, .18); }

/* Sections */
.section { padding: 48px 0; scroll-margin-top: 76px; }
.section h2 { color: #fff; font-weight: 400; font-size: clamp(30px, 4vw, 44px); line-height: 1.05; letter-spacing: -.045em; margin: 0 0 8px; }
.section .lead { color: var(--grey); font-size: 17px; margin: 0 0 26px; }

/* Start here */
.start-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.start-card {
  position: relative; display: block; padding: 26px; border-radius: var(--radius); text-decoration: none;
  background: var(--panel); border: 1px solid var(--border-dark); transition: transform .25s ease, border-color .25s;
}
.start-card:hover { transform: translateY(-3px); border-color: var(--lime); }
.start-card .num { position: absolute; top: 24px; right: 26px; font-size: 13px; font-weight: 600; letter-spacing: .14em; color: var(--grey); }
.start-card .emoji { font-size: 30px; line-height: 1; }
.start-card h3 { color: #fff; font-size: 21px; font-weight: 500; letter-spacing: -.02em; margin: 16px 0 6px; }
.start-card p { margin: 0; color: var(--hgrey); font-size: 15px; }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; height: 38px; padding: 0 15px; border-radius: 999px;
  background: #141416; border: 1px solid var(--border-2); color: var(--text-light);
  font: 400 15px "Inter Tight", system-ui, sans-serif; cursor: pointer; transition: border-color .2s, background .2s, color .2s;
}
.chip:hover { border-color: #4a4a50; }
.chip[aria-pressed="true"] { background: var(--lime); color: #000; border-color: var(--lime); font-weight: 500; }
.cat-desc { color: var(--hgrey); font-size: 15px; max-width: 760px; margin: 0 0 22px; }
.result-note { color: var(--grey); font-size: 14px; margin: 0 0 14px; }

/* Prompt cards */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.pcard {
  display: flex; flex-direction: column; border-radius: var(--radius); overflow: hidden; text-decoration: none;
  background: var(--panel); border: 1px solid var(--border-dark); transition: transform .25s ease, border-color .25s;
}
.pcard[hidden] { display: none; }
.pcard:hover { transform: translateY(-3px); border-color: var(--lime); }
.pcard .art {
  height: 108px; display: grid; place-items: center; font-size: 42px;
  background: radial-gradient(70% 90% at 50% 30%, #3D3D41 0%, #26262A 45%, #161618 100%);
  border-bottom: 1px solid var(--border-dark);
}
.pcard .body { padding: 18px 18px 20px; display: flex; flex-direction: column; flex: 1; }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--grey); margin: 0 0 6px; }
.pcard h3 { color: #fff; font-size: 18px; font-weight: 500; line-height: 1.25; letter-spacing: -.02em; margin: 0 0 6px; }
.pcard p { margin: 0; color: var(--hgrey); font-size: 14.5px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tags { display: flex; gap: 6px; margin-top: auto; padding-top: 14px; }
.tag { font-size: 12px; padding: 2px 9px; border-radius: 4px; background: #1C1C1F; border: 1px solid var(--border-dark); color: var(--hgrey); }
.empty { display: none; text-align: center; color: var(--hgrey); padding: 40px 0; }

/* Footer */
.footer { margin-top: 56px; padding: 28px 0 40px; text-align: center; color: var(--grey); font-size: 15px; border-top: 1px solid var(--border-dark); }
.footer a { color: var(--text-light); text-decoration: none; }
.footer a:hover { color: var(--lime); }

/* Detail page */
body.detail { background: radial-gradient(70% 480px at 50% 0%, #2E2E32 0%, #18181A 55%, var(--black) 100%) no-repeat, var(--black); }
.back { display: inline-flex; align-items: center; gap: 6px; margin: 36px 0 26px; color: var(--hgrey); text-decoration: none; font-size: 15px; }
.back:hover { color: #fff; }
.phead { display: flex; align-items: center; gap: 20px; margin-bottom: 32px; }
.phead .art { flex: none; width: 76px; height: 76px; border-radius: 12px; display: grid; place-items: center; font-size: 38px; border: 1px solid var(--border-2);
  background: radial-gradient(70% 90% at 50% 30%, #3D3D41 0%, #26262A 50%, #161618 100%); }
.phead h1 { color: #fff; font-weight: 400; font-size: clamp(34px, 5vw, 54px); line-height: 1.02; letter-spacing: -.045em; margin: 0; text-wrap: balance; }
.content { font-size: 17px; line-height: 1.7; color: var(--text-light); }
.content p { margin: 0 0 16px; }
.content h2 { color: #fff; font-size: 27px; font-weight: 400; letter-spacing: -.035em; line-height: 1.2; margin: 44px 0 12px; }
.content h3 { color: #fff; font-size: 20px; font-weight: 500; letter-spacing: -.02em; line-height: 1.3; margin: 32px 0 10px; }
.content ul, .content ol { margin: 0 0 18px; padding-left: 22px; }
.content li { margin-bottom: 6px; }
.content li::marker { color: var(--lime); }
.content a { color: #fff; text-decoration: underline; text-decoration-color: var(--lime); text-decoration-thickness: 2px; text-underline-offset: 3px; overflow-wrap: anywhere; }
.content strong { color: #fff; font-weight: 600; }
.content blockquote { margin: 0 0 18px; padding: 14px 18px; border-left: 3px solid var(--lime); background: var(--panel); border-radius: 0 8px 8px 0; font-style: italic; }
.content hr { border: 0; height: 1px; background: var(--border-dark); margin: 30px 0; }
.content figure { margin: 18px 0 24px; }
.content figure img { border-radius: 10px; border: 1px solid var(--border-dark); }
mark.fill { background: var(--mark-bg); color: var(--mark); border-radius: 3px; padding: 0 3px; font-weight: 600; }

.prompt { margin: 0 0 22px; border-radius: var(--radius); border: 1px solid var(--border-2); background: var(--panel); overflow: hidden; }
.prompt-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px 10px 20px; border-bottom: 1px solid var(--border-dark); background: var(--panel-2); }
.prompt-head .label { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--hgrey); }
.copy {
  display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px; border-radius: 4px; border: 0; cursor: pointer;
  background: var(--lime); color: #000; font: 500 14px "Inter Tight", sans-serif; flex: none; transition: transform .15s ease, filter .2s;
}
.copy:hover { filter: brightness(1.06); }
.copy:active { transform: scale(.96); }
.copy.done { background: #fff; }
.copy svg { width: 14px; height: 14px; }
.prompt-text { margin: 0; padding: 18px 20px 20px; white-space: pre-wrap; overflow-wrap: anywhere; font: 400 16px/1.7 "Inter Tight", system-ui, sans-serif; color: #EDEDEF; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; }
.pager a { display: block; padding: 18px 20px; border-radius: var(--radius); border: 1px solid var(--border-dark); background: var(--panel); text-decoration: none; transition: border-color .2s, transform .2s; }
.pager a:hover { border-color: var(--lime); transform: translateY(-2px); }
.pager small { display: block; color: var(--grey); font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 4px; }
.pager span { color: #fff; font-weight: 500; font-size: 17px; }
.pager .next { text-align: right; grid-column: 2; }
.notfound { text-align: center; padding: 80px 0; color: var(--hgrey); }
.notfound h1 { color: #fff; font-weight: 400; letter-spacing: -.04em; }

/* Responsive */
@media (max-width: 1080px) { .grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 860px) {
  .nav { display: none; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .start-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .topbar .wrap { height: 60px; }
  .brand { font-size: 12.5px; letter-spacing: .1em; }
  .topbar .btn { height: 36px; padding: 0 12px; font-size: 13.5px; }
  .hero { padding: 56px 0 44px; }
  .badge { font-size: 12.5px; padding: 5px 12px; }
  .grid { grid-template-columns: 1fr; }
  .pcard .art { height: 88px; }
  .chips { flex-wrap: nowrap; overflow-x: auto; margin-inline: -16px; padding: 0 16px 4px; scrollbar-width: none; }
  .chips::-webkit-scrollbar { display: none; }
  .chip { flex: none; }
  .phead { gap: 14px; }
  .phead .art { width: 60px; height: 60px; font-size: 30px; }
  .prompt-head { padding-left: 16px; }
  .prompt-text { padding: 16px; font-size: 15.5px; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; }
}
@media (max-width: 380px) { .topbar .btn { padding: 0 10px; font-size: 12.5px; } .brand { font-size: 11px; letter-spacing: .06em; } }