/* server/public/styles/home.css
 * Per-section composition styles. Populated in subsequent tasks.
 */

/* ── Site nav ── */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-s) var(--s-l);
  /* Fully opaque — transparent nav let bold headlines bleed through
     the 12% gap and visually mutilated the logo. */
  background: var(--paper);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-quick) var(--ease-out-expo);
}
/* Show a hair-line only once the user has scrolled past the hero, so the
   nav has a gentle separator from content but no border at the top. */
.site-nav.is-scrolled {
  border-bottom-color: var(--ink-faint);
}

.site-nav__brand {
  display: inline-flex;
  align-items: center;
  transition: opacity var(--dur-quick) var(--ease-out-expo);
}
.site-nav__brand:hover { opacity: 0.72; }

.site-nav__logo {
  display: block;
  height: 52px;
  width: auto;
}

@media (max-width: 720px) {
  .site-nav { padding: var(--s-2xs) var(--s-m); }
  .site-nav__logo { height: 32px; }
}

/* ── Site footer ── */

.site-footer {
  padding: var(--s-2xl) var(--s-l);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-xl);
  max-width: var(--w-wide);
  margin: 0 auto var(--s-xl);
}
.site-footer__divider {
  max-width: var(--w-wide);
  margin: 0 auto;
  border: none;
  border-top: 1px solid var(--paper-faint-on-ink);
}
.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--w-wide);
  margin: var(--s-xl) auto 0;
  flex-wrap: wrap;
  gap: var(--s-m);
}
.site-footer__links {
  display: flex;
  gap: var(--s-l);
}

@media (max-width: 720px) {
  .site-footer__grid { grid-template-columns: 1fr; }
  .site-footer__bottom { flex-direction: column; text-align: center; }
}

/* ── Hero ── */

.hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--s-3xl) var(--s-m);
  position: relative;
}

.hero__island-wrap {
  position: absolute;
  top: var(--s-3xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-s);
}

.hero__island {
  position: relative;
  transition: transform var(--dur-quick) var(--ease-spring);
}
.hero__island:hover { transform: scale(1.02); }

.hero__island-glow {
  position: absolute;
  inset: -32px;
  border-radius: 9999px;
  background: var(--brand-gradient);
  opacity: 0;
  filter: blur(40px);
  transition: opacity var(--dur-flow) var(--ease-out-expo);
  pointer-events: none;
}
.hero__island[data-state="incoming"] .hero__island-glow,
.hero__island[data-state="expanded"] .hero__island-glow {
  opacity: 0.28;
}

.hero__island-pill {
  position: relative;
  background: #0A0A0A;
  border-radius: 9999px;
  padding: 12px 16px;
  min-width: 126px;
  min-height: 37px;
  transition:
    min-width var(--dur-flow) var(--ease-out-expo),
    min-height var(--dur-flow) var(--ease-out-expo),
    padding var(--dur-flow) var(--ease-out-expo);
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
}

.hero__island[data-state="expanded"] .hero__island-pill {
  min-width: 370px;
  min-height: 84px;
  padding: 12px 20px;
}

.hero__island-content {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  opacity: 0;
  /* Fade out quickly when collapsing */
  transition: opacity 160ms var(--ease-out-expo);
}
/* Fade in only after the pill has finished expanding — avoids the text
   overflowing the still-collapsing shape. */
.hero__island[data-state="expanded"] .hero__island-content {
  opacity: 1;
  transition: opacity 280ms var(--ease-out-expo) 380ms;
}

.hero__island-avatar {
  width: 44px;
  height: 44px;
  border-radius: 9999px;
  background: linear-gradient(135deg, #FFB800, #FF6363);
  flex-shrink: 0;
}

.hero__island-text { flex: 1; color: var(--paper); min-width: 0; }
.hero__island-sender {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.56;
}
.hero__island-message {
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hero__island-timer {
  font-size: 13px;
  font-weight: 600;
  color: var(--paper);
  opacity: 0.72;
}

.hero__island-hint { opacity: 0; transition: opacity var(--dur-flow) var(--ease-out-expo); }
.hero__island-hint.is-visible { opacity: 0.56; }

.hero__headline {
  text-align: center;
  margin-top: var(--s-2xl);
  margin-bottom: var(--s-l);
  max-width: 12ch;
}
.hero__headline-line {
  display: block;
  /* t-display-xl has line-height: 0.9 which is too tight — descenders on
     the gradient line (y/g in "only says one thing") fall outside the
     background-clip: text paint region and render transparent. */
  line-height: 1.04;
  padding-bottom: 0.08em;
}

.hero__subhead {
  text-align: center;
  max-width: 520px;
  margin-bottom: var(--s-xl);
}

.hero__cta {
  margin-top: var(--s-m);
}

@media (max-width: 720px) {
  .hero {
    justify-content: flex-start;
    padding: var(--s-xl) var(--s-m) var(--s-2xl);
    min-height: auto;
    gap: var(--s-l);
  }
  /* The base rule uses absolute + left:50% + translateX(-50%). Reset ALL
     of those on mobile, otherwise translateX(-50%) survives and pushes the
     island half off the left edge. */
  .hero__island-wrap {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    margin: 0 auto;
  }
  .hero__island[data-state="expanded"] .hero__island-pill {
    min-width: min(300px, 88vw);
    min-height: 72px;
  }
  .hero__headline {
    margin: 0;
    max-width: 100%;
    font-size: clamp(44px, 12vw, 64px);
  }
  .hero__headline-line { line-height: 1.04; padding-bottom: 0.08em; }
  .hero__subhead {
    font-size: 16px;
    margin-bottom: var(--s-m);
  }
  .hero__cta { margin-top: 0; }
}

/* ── 01 Wave ── */

.wave__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-2xl);
  align-items: start;
}

.wave__sticky {
  position: sticky;
  top: var(--s-xl);
  align-self: start;
}

.wave__sticky img {
  /* drop-shadow respects the PNG alpha silhouette — box-shadow would
     render a rounded-rect halo that looks like a white backing plane. */
  filter: drop-shadow(0 24px 48px rgba(14, 18, 46, 0.22));
}

.wave__scroll {
  display: flex;
  flex-direction: column;
  gap: var(--s-2xl);
  padding-top: var(--s-xl);
}

.wave__title { max-width: 16ch; }
.wave__body { max-width: 48ch; }
.wave__quote {
  max-width: 20ch;
  line-height: 1.05;
  font-style: normal;
  padding-top: var(--s-xl);
  border-top: 1px solid var(--ink-faint);
}

@media (max-width: 960px) {
  .wave__grid { grid-template-columns: 1fr; gap: var(--s-xl); }
  .wave__sticky { position: static; max-width: 420px; margin: 0 auto; }
}

/* ── 02 Streaks ── */

.streaks {
  min-height: 240vh; /* reserve room for scroll-driven set-piece */
}

.streaks__header {
  max-width: var(--w-text);
  margin: 0 auto var(--s-2xl);
  text-align: center;
}

.streaks__title { max-width: 22ch; margin: 0 auto var(--s-l); }
.streaks__body { max-width: 56ch; margin: 0 auto; }

.streaks__stage {
  position: sticky;
  top: 15vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-2xl);
  align-items: center;
  min-height: 70vh;
  max-width: var(--w-wide);
  margin: 0 auto;
}

.streaks__counter {
  display: flex;
  flex-direction: column;
  gap: var(--s-2xs);
  align-items: flex-start;
}
.streaks__counter-value {
  font-size: var(--t-display-xl-size);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.88;
  margin-bottom: var(--s-3xs);
}
.streaks__counter-label {
  opacity: 0.48;
}
.streaks__counter-annotation {
  margin-top: var(--s-s);
  padding-top: var(--s-s);
  border-top: 1px solid var(--ink-faint);
  color: var(--ink);
  opacity: 0.72;
}

.streaks__phone {
  position: relative;
  aspect-ratio: 1220 / 2494; /* match actual streak-* PNG dimensions */
  max-width: 420px;
  justify-self: center;
  width: 100%;
}

.streaks__phone picture {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--dur-flow) var(--ease-out-expo);
}
.streaks__phone picture.is-active { opacity: 1; }
.streaks__phone img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 48px rgba(14, 18, 46, 0.22));
}

@media (max-width: 960px) {
  .streaks { min-height: auto; }
  .streaks__stage {
    position: static;
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--s-xl);
  }
  .streaks__counter { align-items: center; }
}

/* ── 03 Wall ── */

.wall__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-2xl);
  align-items: center;
  margin-bottom: var(--s-3xl);
}

.wall__phone {
  max-width: 420px;
  justify-self: center;
  width: 100%;
}
.wall__phone img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 48px rgba(14, 18, 46, 0.22));
}

.wall__text { display: flex; flex-direction: column; gap: var(--s-l); }
.wall__title { max-width: 18ch; }
.wall__body { max-width: 52ch; }
.wall__quote {
  max-width: 28ch;
  padding-top: var(--s-xl);
  border-top: 1px solid var(--ink-faint);
  color: var(--brand);
  font-style: italic;
}
.wall__quote span { font-style: normal; display: block; margin-top: var(--s-2xs); }

.wall__canvas-wrap {
  position: relative;
  max-width: var(--w-wide);
  margin: 0 auto;
  height: 420px;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--ink-faint);
  box-shadow: 0 32px 64px rgba(14, 18, 46, 0.08);
  background:
    radial-gradient(circle at 1px 1px, rgba(17, 17, 17, 0.14) 1.2px, transparent 1.2px) 0 0 / 20px 20px,
    var(--paper-pure);
}
.wall__canvas {
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}
.wall__canvas-hint {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: var(--ink-muted);
  pointer-events: none;
  transition: opacity var(--dur-quick) var(--ease-out-expo);
}
.wall__canvas-hint.is-hidden { opacity: 0; }

@media (max-width: 960px) {
  .wall__grid { grid-template-columns: 1fr; gap: var(--s-xl); }
  .wall__canvas-wrap { height: 280px; }
}

/* ── 04 Groups ── */

.groups__header {
  text-align: center;
  margin-bottom: var(--s-2xl);
}
.groups__title { margin: 0 auto var(--s-l); max-width: 14ch; }
.groups__body { max-width: 56ch; margin: 0 auto; }

.groups__stage {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  height: 720px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}

.groups__phone {
  position: relative;
  z-index: 2;
  max-width: 320px;
  width: 100%;
}
.groups__phone img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 48px rgba(14, 18, 46, 0.22));
}

.groups__salvo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.groups__salvo .pill {
  will-change: transform, opacity;
}
.groups__salvo .pill rect { fill: var(--paper-pure); stroke: var(--ink-faint); stroke-width: 1; }
.groups__salvo .pill text { fill: var(--ink); font-family: var(--font-body); font-size: 14px; font-weight: 600; }
.groups__salvo .pill .emoji { font-size: 20px; }

/* ── 05 Widgets ── */

.widgets {
  padding: var(--s-4xl) var(--s-m);
  color: var(--paper-on-ink);
}

.widgets__inner {
  max-width: var(--w-wide);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-2xl);
  text-align: center;
}

.widgets__text--top, .widgets__text--bottom {
  max-width: var(--w-text);
}
.widgets__title { max-width: 14ch; margin: 0 auto; }
.widgets__body {
  max-width: 52ch;
  margin: 0 auto;
  color: var(--paper-muted-on-ink);
}

.widgets__phone {
  max-width: 360px;
  width: 100%;
}
.widgets__phone img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 40px 120px rgba(80, 96, 220, 0.45));
}

/* Legacy annotations — hidden everywhere (the 3-column grid layout they were
   designed for got replaced with a simpler vertical stack that reads better). */
.widgets__annotations { display: none; }

/* ── 06 Custom Emoji ── */

.emoji__header { text-align: center; margin-bottom: var(--s-2xl); }
.emoji__title { max-width: 16ch; margin: 0 auto var(--s-l); }
.emoji__body { max-width: 56ch; margin: 0 auto; }

.emoji__phones {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--s-xl);
  align-items: center;
  justify-items: center;
  margin-bottom: var(--s-3xl);
}
.emoji__phone { max-width: 320px; width: 100%; }
.emoji__phone--left { transform: translateY(20px); }
.emoji__phone--right { transform: translateY(-20px); }
.emoji__phone img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 48px rgba(14, 18, 46, 0.22));
}
.emoji__arrow {
  align-self: center;
  opacity: 0.56;
}

.emoji__tiers {
  list-style: none;
  max-width: var(--w-text);
  margin: 0 auto;
  padding: 0;
}
.emoji__tier {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: var(--s-2xs) var(--s-m);
  padding: var(--s-l) 0;
  border-top: 1px solid var(--ink-faint);
  position: relative;
}
.emoji__tier:last-child { border-bottom: 1px solid var(--ink-faint); }

.emoji__tier-label { grid-row: 1; grid-column: 1; }
.emoji__tier-price { grid-row: 1 / 3; grid-column: 2; align-self: center; }
.emoji__tier-desc { grid-row: 2; grid-column: 1; max-width: 48ch; }

.emoji__tier::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 2px;
  width: 0%;
  background: var(--brand-gradient);
  transition: width var(--dur-quick) var(--ease-out-expo);
}
.emoji__tier:hover::after { width: 100%; }

@media (max-width: 720px) {
  .emoji__phones { grid-template-columns: 1fr; }
  .emoji__phone--left, .emoji__phone--right { transform: none; }
  .emoji__arrow { transform: rotate(90deg); }
}

/* ── 07 FAQ ── */

.faq__title { margin: 0 0 var(--s-2xl); max-width: 20ch; }

.faq__list { list-style: none; padding: 0; margin: 0; }

.faq__item {
  border-bottom: 1px solid var(--ink-faint);
}
.faq__item:first-child { border-top: 1px solid var(--ink-faint); }

.faq__question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-m);
  width: 100%;
  padding: var(--s-l) 0;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur-quick) var(--ease-out-expo);
}
.faq__question:hover { background: rgba(17, 17, 17, 0.02); }

.faq__toggle {
  font-size: 28px;
  font-weight: 400;
  transition: transform var(--dur-flow) var(--ease-out-expo);
}
.faq__question[aria-expanded="true"] .faq__toggle {
  transform: rotate(45deg);
}

.faq__answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-flow) var(--ease-out-expo);
  overflow: hidden;
}
.faq__answer > p {
  min-height: 0;
  opacity: 0;
  transition: opacity var(--dur-flow) var(--ease-out-expo);
  padding-bottom: var(--s-l);
  max-width: 56ch;
}
.faq__item[data-open] .faq__answer { grid-template-rows: 1fr; }
.faq__item[data-open] .faq__answer > p { opacity: 1; }

/* ── Closing CTA ── */

.closing {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--s-3xl) var(--s-m);
  color: var(--paper-on-ink);
}

.closing__inner {
  text-align: center;
  max-width: var(--w-wide);
}

.closing__headline {
  margin-bottom: var(--s-2xl);
}
.closing__line { display: block; }

.closing__punchline {
  margin-bottom: var(--s-xl);
}

.closing__cta { margin-bottom: var(--s-m); }

.closing__label {
  color: var(--paper-muted-on-ink);
  opacity: 0.6;
}