/* ───────────────────── pptVibe — redesigned ───────────────────── */

:root {
  --bg: #F2EDE4;
  --bg-deep: #E9E2D5;
  --ink: #18171A;
  --ink-soft: #3a3631;
  --muted: #6b6358;
  --quiet: #9a8f80;
  --rule: rgba(24, 23, 26, 0.10);
  --rule-strong: rgba(24, 23, 26, 0.20);
  --accent: #D94030;
  --good: #2a7a4a;
  --display-font: 'Instrument Serif', 'Times New Roman', serif;
  --sans: 'Geist', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'ss01' on, 'cv11' on;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }

/* ───────────── Shared bits ───────────── */
.mono-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--quiet);
  font-weight: 400;
}

.section-h {
  font-family: var(--display-font);
  font-weight: 500;
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-wrap: balance;
}
.section-h em { font-style: italic; color: var(--accent); }

.section-head {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 56px;
  padding: 0 56px;
  align-items: baseline;
  margin-bottom: 64px;
}
.section-head .section-h { max-width: 16ch; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: var(--bg);
  padding: 14px 22px 14px 24px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 999px;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn-primary:hover { background: var(--accent); transform: translateY(-1px); }

.btn-ghost {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--rule-strong);
  padding-bottom: 2px;
}
.btn-ghost:hover { color: var(--ink); border-color: var(--ink); }

/* ───────────── Nav ───────────── */
.nav {
  position: sticky;
  top: 0;
  background: color-mix(in oklab, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
  z-index: 100;
}
.nav__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 64px;
  padding: 20px 32px;
  max-width: 1400px;
  margin: 0 auto;
}
.logo {
  font-family: var(--display-font);
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
  display: inline-flex;
}
.logo__ppt { color: var(--ink); }
.logo__vibe { color: var(--accent); }

.nav__links {
  display: flex;
  gap: 32px;
  justify-self: center;
}
.nav__links a {
  font-size: 14px;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
}
.nav__links a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav__links a:hover::after { transform: scaleX(1); }

.nav__cta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--ink);
  padding: 11px 18px;
  border-radius: 999px;
  transition: background 0.2s;
}
.nav__cta:hover { background: var(--accent); }

/* ───────────── Hero ───────────── */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 56px;
  padding: 80px 56px 96px;
  border-bottom: 1px solid var(--rule);
  align-items: start;
  max-width: 1400px;
  margin: 0 auto;
}
.hero__left { max-width: 560px; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  color: var(--accent);
  margin-bottom: 36px;
}
.hero__eyebrow-rule {
  width: 36px; height: 1px; background: var(--accent); display: block;
}

.hero__h1 {
  font-family: var(--display-font);
  font-weight: 500;
  font-size: clamp(48px, 6.4vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 28px;
  text-wrap: balance;
}
.hero__h1 em { font-style: italic; color: var(--accent); }

.hero__sub {
  font-size: 17px;
  line-height: 1.55;
  color: var(--muted);
  margin-bottom: 44px;
  max-width: 48ch;
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.hero__meta-item {
  padding: 18px 0;
  border-right: 1px solid var(--rule);
  font-size: 13px;
  color: var(--muted);
  display: flex; flex-direction: column; gap: 4px;
  padding-left: 16px;
}
.hero__meta-item:first-child { padding-left: 0; }
.hero__meta-item:last-child { border-right: none; }
.hero__meta-item strong {
  font-family: var(--display-font);
  font-weight: 500;
  font-size: 26px;
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1;
}

/* ───────────── Quiz Card ───────────── */
.hero__right { container-type: inline-size; padding-top: 52px; }

.quiz-card {
  background: var(--bg);
  border: 1px solid var(--rule-strong);
  border-radius: 14px;
  padding: 22px;
}

.quiz-card__meta {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px;
}
.quiz-card__meta strong { color: var(--ink); font-weight: 500; }

.streak {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--quiet);
  display: inline-flex; align-items: center; gap: 8px;
}
.streak strong { color: var(--accent); font-weight: 500; }
.streak__dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}

.quiz-card__prompt {
  font-family: var(--display-font);
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 18px;
  text-wrap: balance;
}

.quiz-card__slides {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}

.slide-pick {
  position: relative;
  display: block;
  text-align: left;
  border-radius: 8px;
  padding: 0;
  background: transparent;
  transition: transform 0.18s ease;
  outline: none;
}
.slide-pick:not(:disabled):hover { transform: translateY(-2px); }
.slide-pick:not(:disabled):hover .slide-pick__frame {
  box-shadow: 0 0 0 2px var(--ink), 0 16px 40px -24px rgba(24,23,26,0.4);
}
.slide-pick__letter {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--quiet);
  margin-bottom: 8px;
}
.slide-pick__frame {
  border-radius: 8px;
  overflow: hidden;
  container-type: inline-size;
  transition: box-shadow 0.2s ease, opacity 0.25s ease;
  box-shadow: 0 0 0 1px var(--rule);
}

.slide-pick.is-revealed .slide-pick__frame { opacity: 0.55; }
.slide-pick.is-correct .slide-pick__frame {
  box-shadow: 0 0 0 2px var(--good), 0 16px 40px -24px rgba(42,122,74,0.5);
  opacity: 1;
}
.slide-pick.is-wrong .slide-pick__frame {
  box-shadow: 0 0 0 2px var(--accent);
  opacity: 1;
}

.slide-pick__tag {
  position: absolute;
  top: 30px;
  right: 10px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 999px;
  color: #fff;
  animation: tagIn 0.3s ease both;
}
@keyframes tagIn {
  from { opacity: 0; transform: translateY(-4px) scale(0.92); }
  to { opacity: 1; transform: none; }
}
.slide-pick__tag--ok { background: var(--good); }
.slide-pick__tag--no { background: var(--accent); }

.quiz-card__feedback {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, margin 0.3s ease;
}
.quiz-card__feedback.is-open { max-height: 220px; margin-bottom: 12px; }

.feedback__head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 6px;
}
.feedback__verdict {
  font-family: var(--display-font);
  font-size: 22px;
  letter-spacing: -0.01em;
}
.feedback__verdict.ok { color: var(--good); }
.feedback__verdict.no { color: var(--accent); }
.feedback__next {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}
.feedback__next:hover { color: var(--accent); border-color: var(--accent); }
.feedback__body {
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 56ch;
}

.quiz-card__progress {
  display: flex; gap: 4px;
  margin-top: 6px;
}
.prog { flex: 1; height: 3px; border-radius: 2px; background: var(--rule); }
.prog--hit { background: var(--good); }
.prog--miss { background: var(--accent); }
.prog--cur { background: var(--ink); }

/* end state */
.quiz-card--done { padding: 28px 26px; }
.quiz-card__done-headline {
  font-family: var(--display-font);
  font-size: 38px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 8px 0 12px;
}
.quiz-card__done-headline em { color: var(--accent); font-style: italic; }
.quiz-card__done-sub {
  font-size: 15px; color: var(--muted); line-height: 1.5;
  margin-bottom: 18px;
}
.quiz-card__history {
  display: flex; gap: 6px; margin-bottom: 22px;
}
.hist {
  width: 28px; height: 28px; border-radius: 999px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 12px;
  color: #fff;
}
.hist--hit { background: var(--good); }
.hist--miss { background: var(--accent); }

.quiz-card__actions { display: flex; gap: 18px; align-items: center; }

/* ───────────── Marquee ───────────── */
.marquee {
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
  background: var(--bg-deep);
  padding: 22px 0;
}
.marquee__track {
  display: flex;
  gap: 48px;
  animation: scroll 50s linear infinite;
  width: max-content;
}
.marquee__item {
  font-family: var(--display-font);
  font-style: italic;
  font-size: 30px;
  color: var(--ink);
  letter-spacing: -0.01em;
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 36px;
}
.marquee__star {
  color: var(--accent);
  font-style: normal;
  font-size: 18px;
}
@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ───────────── How ───────────── */
.how {
  padding: 96px 0;
  border-bottom: 1px solid var(--rule);
  max-width: 1400px;
  margin: 0 auto;
}
.how__head { padding: 0 56px; margin-bottom: 64px; max-width: 880px; }
.how__head .mono-label { display: block; margin-bottom: 14px; }

.how__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule);
}
.how__step {
  padding: 40px 48px 48px;
  border-right: 1px solid var(--rule);
  position: relative;
}
.how__step:last-child { border-right: none; }
.how__num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 28px;
}
.how__title {
  font-family: var(--display-font);
  font-size: 32px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
  text-wrap: balance;
}
.how__body {
  font-size: 15px;
  line-height: 1.55;
  color: var(--muted);
  max-width: 34ch;
}

/* ───────────── Packs ───────────── */
.packs { padding: 96px 0; border-bottom: 1px solid var(--rule); max-width: 1400px; margin: 0 auto; }
.packs__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding: 0 56px;
}

.pack {
  display: block;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.pack:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 60px -40px rgba(24,23,26,0.3);
  border-color: var(--rule-strong);
}
.pack--soon { opacity: 0.7; }
.pack--soon:hover { transform: none; box-shadow: none; }

.pack__head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--rule);
}
.pack__pill {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: 999px;
}
.pack__pill--free { background: #E1ECDF; color: #2a5a3e; }
.pack__pill--soon { background: var(--bg-deep); color: var(--muted); }

.pack__preview {
  height: 200px;
  background: var(--bg-deep);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
}

.pack__body { padding: 24px 22px 26px; }
.pack__title {
  font-family: var(--display-font);
  font-weight: 500;
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.pack__blurb {
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
  margin-bottom: 18px;
  max-width: 48ch;
}
.pack__meta {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--quiet);
}
.pack__arrow { margin-left: auto; color: var(--ink); font-size: 14px; }

/* Pack previews */
.preview {
  width: 80%;
  height: 78%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.preview--stack {
  position: relative;
  display: block;
}
.preview__card {
  position: absolute;
  width: 60%;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 14px;
}
.preview__card--a {
  left: 0; top: 18%;
  transform: rotate(-3deg);
  height: 64%;
}
.preview__card--a .dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; margin-bottom: 10px; }
.preview__card--a .line { height: 4px; background: var(--bg-deep); border-radius: 2px; margin-bottom: 6px; }
.preview__card--a .line--short { width: 40%; }
.preview__card--a .line--med { width: 70%; }

.preview__card--b {
  right: 0; top: 18%;
  transform: rotate(3deg);
  height: 64%;
  display: flex; align-items: center; justify-content: center;
}
.preview__card--b .big {
  font-family: var(--display-font);
  font-weight: 500;
  font-size: 44px;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.preview--type {
  display: flex; gap: 20px; align-items: center;
}
.type-big {
  font-family: var(--display-font);
  font-size: 96px;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--ink);
}
.type-stack { display: flex; flex-direction: column; gap: 6px; }
.type-row {
  font-family: var(--sans);
  font-weight: 500;
  color: var(--muted);
  letter-spacing: -0.01em;
  line-height: 1;
}

.preview--color {
  display: flex; gap: 8px;
}
.swatch {
  width: 36px; height: 80px; border-radius: 4px;
  background: var(--bg);
  border: 1px solid var(--rule);
}
.swatch--accent { background: var(--accent); border: none; height: 110px; }
.s1 { background: #E4DBC9; }
.s2 { background: #C9BFAA; }
.s3 { background: #9a8f80; }
.s5 { background: #18171A; }

.preview--grid { display: flex; gap: 12px; width: 90%; }
.g { flex: 1; display: grid; gap: 4px; padding: 8px; background: #fff; border: 1px solid var(--rule); border-radius: 6px; }
.g--dense { grid-template-columns: repeat(4, 1fr); }
.g--airy { grid-template-columns: repeat(2, 1fr); padding: 18px; gap: 10px; }
.g__cell { aspect-ratio: 1; background: var(--bg-deep); border-radius: 2px; }
.g--airy .g__cell:first-child { background: var(--accent); }

/* ───────────── Today's challenge ───────────── */
.today {
  padding: 96px 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  max-width: 1400px;
  margin: 0 auto;
  align-items: center;
  border-bottom: 1px solid var(--rule);
}
.today__left { max-width: 520px; }
.today__left .mono-label { display: block; margin-bottom: 14px; }
.today__left .section-h { margin-bottom: 20px; }
.today__body {
  font-size: 16px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 28px;
  max-width: 50ch;
}
.today__right {
  display: flex; justify-content: center;
}
.today__mock {
  width: 100%;
  max-width: 480px;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 30px 60px -40px rgba(24,23,26,0.25);
}
.today__mock-head {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 14px;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--rule);
}
.today__mock-head .dot { width: 10px; height: 10px; border-radius: 50%; }
.dot--r { background: #E96B5A; }
.dot--y { background: #E8C45E; }
.dot--g { background: #6FB073; }
.today__mock-title {
  margin-left: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}
.today__mock-body {
  padding: 28px 26px;
  display: flex; gap: 26px; align-items: center;
}
.today__mock-pie {
  width: 160px; height: 160px; border-radius: 50%;
  flex-shrink: 0;
  background: conic-gradient(
    #245c4a 0 12%, #2e6b56 12% 22%, #387a62 22% 30%, #4a8975 30% 38%,
    #5d9889 38% 46%, #71a89c 46% 54%, #86b8af 54% 62%, #9bc7c1 62% 70%,
    #afd6d3 70% 78%, #c3e5e5 78% 86%, #2a7a4a 86% 94%, #1f5e3b 94% 100%);
}
.today__mock-legend {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 12px;
  font-size: 11px;
  color: var(--ink-soft);
}
.legend-row { display: flex; align-items: center; gap: 6px; }
.legend-row__swatch { width: 8px; height: 8px; border-radius: 1px; flex-shrink: 0; }

/* ───────────── Footer ───────────── */
.footer { padding: 64px 56px 36px; max-width: 1400px; margin: 0 auto; }
.footer__row {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--rule);
}
.footer__row--bot {
  padding-top: 24px;
  padding-bottom: 0;
  border-bottom: none;
}
.footer .logo { font-size: 36px; }
.footer__tag {
  font-family: var(--display-font);
  font-size: 22px;
  font-style: italic;
  color: var(--muted);
  letter-spacing: -0.01em;
}
.footer__links {
  display: flex; gap: 28px; list-style: none;
}
.footer__links a {
  font-size: 13px;
  color: var(--muted);
  transition: color 0.2s;
}
.footer__links a:hover { color: var(--ink); }

/* ───────────── Responsive ───────────── */
@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr; gap: 48px; padding: 64px 32px 80px; }
  .hero__h1 { font-size: clamp(44px, 8vw, 72px); }
  .section-head, .how__head, .packs__grid, .today, .footer { padding-left: 32px; padding-right: 32px; }
  .section-head { grid-template-columns: 1fr; gap: 16px; }
  .today { grid-template-columns: 1fr; gap: 48px; padding-top: 72px; padding-bottom: 72px; }
  .nav__inner { display: flex; justify-content: space-between; align-items: center; padding: 18px 24px; gap: 24px; }
  .nav__links { display: none; }
}

@media (max-width: 720px) {
  .hero__h1 { font-size: 48px; }
  .hero__meta { grid-template-columns: repeat(2, 1fr); }
  .hero__meta-item:nth-child(2) { border-right: none; }
  .hero__meta-item:nth-child(3), .hero__meta-item:nth-child(4) { border-top: 1px solid var(--rule); }
  .quiz-card__slides { grid-template-columns: 1fr; }
  .how__list { grid-template-columns: 1fr; }
  .how__step { border-right: none; border-bottom: 1px solid var(--rule); }
  .how__step:last-child { border-bottom: none; }
  .packs__grid { grid-template-columns: 1fr; }
  .footer__row { flex-direction: column; gap: 18px; text-align: center; }
  .footer__links { flex-wrap: wrap; justify-content: center; }
  .marquee__item { font-size: 22px; }
  .today__mock-body { flex-direction: column; }
  .today__mock-pie { width: 200px; height: 200px; }
}