/* =====================================================================
   LANDING.CSS: layout and look of the landing page (index.html)
   ===================================================================== */


/* ---------- Page layout: one centered column ---------- */

/* The page is at least one screen tall, so the footer always sits at the very bottom */
.landing {
  display: flex;
  flex-direction: column;
}

.landing__main {
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding:
    calc(28px + env(safe-area-inset-top))
    calc(16px + env(safe-area-inset-right))
    28px
    calc(16px + env(safe-area-inset-left));
}


/* ---------- Hero ---------- */

.hero {
  position: relative;
  text-align: center;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 17vw, 5.6rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: 0.02em;
  color: var(--text);
  text-shadow: 3px 3px 0 var(--red);
}

.hero__line {
  display: block;
}

.hero__badge {
  position: absolute;
  right: 2%;
  top: calc(clamp(3.4rem, 17vw, 5.6rem) * 0.78);
  width: clamp(68px, 19vw, 90px);
  height: auto;
  transform: rotate(10deg);
  overflow: visible;
}

.hero__badge-text {
  font-family: var(--font-display);
  font-size: 27px;
  fill: #1B1B1F;
  letter-spacing: 0.02em;
}

.hero__tagline {
  max-width: 24ch;
  margin: 18px auto 0;
  color: var(--text-soft);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.35;
}


/* ---------- Panels (the cards) ---------- */

.panel {
  position: relative;
  padding: 18px 18px 20px;
}

.panel__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.04em;
}


/* ---------- Button style carousel ---------- */

.picker .panel__title {
  text-align: center;
}

.carousel {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}

.carousel__stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 196px;
  touch-action: pan-y;           /* vertical scroll still works, sideways swipes change style */
  cursor: pointer;
}

.carousel__stage .game-button {
  --size: 164px;
  cursor: inherit;
}

/* A small spring when the style changes */
.carousel__stage .game-button.is-popping {
  animation: carousel-pop 260ms var(--ease-spring);
}

@keyframes carousel-pop {
  0% { transform: scale(0.86); }
  100% { transform: scale(1); }
}

.carousel__stage.is-locked .game-button {
  filter: grayscale(0.85);
  opacity: 0.6;
}

.carousel__lock {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border: var(--outline-width) solid var(--line);
  border-radius: 50%;
  background: var(--yellow);
  color: #1B1B1F;
  box-shadow: var(--shadow-small);
}

.carousel__lock svg {
  width: 26px;
  height: 26px;
}

.carousel__name {
  margin-top: 8px;
  text-align: center;
  font-size: 1.25rem;
  font-weight: 900;
}

.carousel__hint {
  margin-top: 2px;
  text-align: center;
  color: var(--text-soft);
  font-size: 0.95rem;
  font-weight: 700;
}

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  min-height: 12px;
  margin-top: 10px;
}

.carousel__dot {
  width: 12px;
  height: 12px;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  transition: background-color 150ms var(--ease-out), transform 150ms var(--ease-out);
}

.carousel__dot.is-active {
  background: var(--red);
  transform: scale(1.15);
}


/* ---------- Difficulty ---------- */

/* The ⓘ sits right after the heading (not at the far right, where the
   trophy button could cover it on small phones) */
.difficulty__header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-toggle[aria-expanded="true"] {
  background: var(--blue);
  color: var(--on-color);
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.segmented__option {
  position: relative;
  display: block;
}

/* The real radio button is invisible but still works with keyboard and screen readers */
.segmented__option input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.segmented__option span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  border: var(--outline-width) solid var(--line);
  border-radius: var(--radius-small);
  background: var(--surface-muted);
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 900;
  transition: transform 120ms var(--ease-out), box-shadow 120ms var(--ease-out), background-color 120ms var(--ease-out);
  pointer-events: none;
}

.segmented__option input:checked + span {
  background: var(--red-strong);
  color: var(--on-color);
  box-shadow: var(--shadow-small);
  transform: translate(-1px, -1px);
}

.segmented__option input:focus-visible + span {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

/* The ⓘ explanation bubble */
.popover {
  position: absolute;
  z-index: 20;
  top: 70px;
  left: 10px;
  width: min(310px, calc(100% - 20px));
  padding: 14px 16px;
  border: var(--outline-width) solid var(--line);
  border-radius: var(--radius-small);
  background: var(--surface);
  box-shadow: var(--shadow);
  font-size: 0.98rem;
  line-height: 1.4;
  animation: popover-in 180ms var(--ease-spring);
}

/* The little tail pointing at the ⓘ button (which sits right after the heading) */
.popover::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 139px;
  width: 16px;
  height: 16px;
  border-top: var(--outline-width) solid var(--line);
  border-left: var(--outline-width) solid var(--line);
  background: var(--surface);
  transform: rotate(45deg);
}

@keyframes popover-in {
  0% { opacity: 0; transform: translateY(-6px) scale(0.96); }
  100% { opacity: 1; transform: none; }
}


/* ---------- PLAY ---------- */

.play-button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80px;
  margin-top: 4px;
  border: var(--outline-width) solid var(--line);
  border-radius: 999px;
  background: var(--red-strong);
  color: var(--on-color);
  box-shadow: 6px 6px 0 var(--line);
  font-family: var(--font-display);
  font-size: 2.8rem;
  line-height: 1;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  text-shadow: 2px 2px 0 var(--line);
  transition: transform 120ms var(--ease-out), box-shadow 120ms var(--ease-out);
  -webkit-user-select: none;
  user-select: none;
}

.play-button:active {
  transform: translate(5px, 5px);
  box-shadow: 1px 1px 0 var(--line);
}


/* ---------- Friend banner (from a shared link) ---------- */

.friend-banner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px 16px 16px;
  background: var(--yellow);
  color: #1B1B1F;
}

.friend-banner__text {
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.35;
}

.friend-banner__text strong {
  color: var(--red-dark);
  font-weight: 900;
}

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

.friend-banner__actions .btn {
  flex: 1;
}

.friend-banner .icon-button {
  flex-shrink: 0;
  background: #FFFFFF;
  color: #1B1B1F;
}


/* ---------- How to play ---------- */

.howto {
  margin-top: 14px;
}

/* Big comic heading used by "How to play" and "See it in action" */
.section-heading {
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.04em;
  text-align: center;
}

.howto__steps {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.howto__step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
}

.howto__number {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border: var(--outline-width) solid var(--line);
  border-radius: 50%;
  background: var(--yellow);
  color: #1B1B1F;
  box-shadow: var(--shadow-small);
  font-family: var(--font-display);
  font-size: 1.6rem;
  line-height: 1;
}

.howto__step-title {
  font-size: 1.15rem;
  font-weight: 900;
  line-height: 1.2;
}

.howto__step p {
  margin-top: 2px;
  color: var(--text-soft);
  font-weight: 700;
  line-height: 1.4;
}


/* ---------- Showcase (screenshots in phone frames) ---------- */

.showcase {
  margin-top: 14px;
}

/* Mobile: a row you can swipe sideways, reaching the screen edges */
.showcase__list {
  display: flex;
  gap: 16px;
  margin: 16px -16px 0;
  padding: 4px 16px 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding: 0 16px;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.showcase__list::-webkit-scrollbar {
  display: none;
}

.showcase__item {
  flex: 0 0 62%;
  max-width: 240px;
  scroll-snap-align: start;
}

.showcase__item figure {
  margin: 0;
}

/* A simple phone drawn in CSS around each screenshot */
.phone {
  padding: 7px;
  border: var(--outline-width) solid var(--line);
  border-radius: 30px;
  background: #1B1B1F;
  box-shadow: var(--shadow);
}

.phone img {
  width: 100%;
  height: auto;
  border-radius: 22px;
  background: var(--paper);
}

.showcase figcaption {
  margin-top: 12px;
  font-weight: 900;
  text-align: center;
}


/* ---------- Personal Bests: trophy button (bottom right) + modal ---------- */

.corner-trophy {
  position: fixed;
  z-index: 30;
  right: calc(16px + env(safe-area-inset-right));
  bottom: calc(16px + env(safe-area-inset-bottom));
  background: var(--yellow);
  color: #1B1B1F;
}

.bests__subtitle {
  margin-top: 6px;
  color: var(--text-soft);
  font-weight: 700;
}

.bests__table {
  width: 100%;
  margin-top: 14px;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.bests__table th {
  padding: 0 4px 8px;
  color: var(--text-soft);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.bests__table td {
  padding: 10px 4px;
  border-top: 2px dashed var(--surface-muted);
  font-weight: 800;
}

.bests__rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: var(--surface-muted);
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1;
}

.bests__rank--first {
  background: var(--yellow);
  color: #1B1B1F;
}

.bests__levels {
  color: var(--red);
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.04em;
}

.bests__empty {
  padding: 28px 8px 10px;
  color: var(--text-soft);
  font-size: 1.1rem;
  font-weight: 800;
  text-align: center;
}


/* ---------- Footer ---------- */

/* Bottom of the page: the "Free to play" line, then the credits */
.footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding:
    28px
    calc(16px + env(safe-area-inset-right))
    env(safe-area-inset-bottom)
    calc(16px + env(safe-area-inset-left));
  color: var(--text-soft);
  text-align: center;
  text-wrap: balance;
}

/* One line wherever it fits; on narrow phones it wraps into two even lines */
.footer__note {
  font-weight: 700;
  line-height: 1.4;
}

/* The credits share the bottom row with the two corner buttons,
   so they keep room on both sides and line up with them */
.footer__credits {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 76px;
  padding: 8px 56px;
  font-size: 0.95rem;
  line-height: 1.4;
}

.footer a {
  display: inline-block;
  padding: 10px 2px;                 /* bigger tap target… */
  margin: -10px 0;                   /* …without making the line taller */
  color: var(--text);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}


/* ---------- Language menu (bottom left) ---------- */

.lang {
  position: fixed;
  z-index: 30;
  left: calc(16px + env(safe-area-inset-left));
  bottom: calc(16px + env(safe-area-inset-bottom));
}

.lang__toggle[aria-expanded="true"] {
  background: var(--blue);
  color: var(--on-color);
}

.lang__menu {
  position: absolute;
  bottom: 58px;
  left: 0;
  width: 240px;
  padding: 6px;
  border-radius: var(--radius-small);
  animation: popover-in 180ms var(--ease-spring);
}

.lang__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  min-height: 44px;
  padding: 8px 12px;
  border: 0;
  border-radius: 10px;
  background: none;
  color: var(--text);
  font-size: 1rem;
  font-weight: 800;
  text-align: left;
}

.lang__item.is-current {
  background: var(--surface-muted);
}

.lang__item.is-soon {
  color: var(--text-soft);
  cursor: not-allowed;
}

.lang__item.is-soon > span {
  opacity: 0.6;
}

.lang__check {
  width: 20px;
  height: 20px;
  color: var(--red);
}

.lang__soon {
  flex-shrink: 0;
  padding: 2px 8px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--yellow);
  color: #1B1B1F;
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1.3;
}


/* ---------- Wide screens: two columns, so PLAY is visible without scrolling ---------- */

@media (min-width: 880px) {
  .landing__main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "banner banner"
      "hero picker"
      "play difficulty"
      "howto howto"
      "showcase showcase";
    align-items: center;
    column-gap: 56px;
    row-gap: 24px;
    max-width: 960px;
    padding-top: calc(min(9vh, 72px) + env(safe-area-inset-top));
  }

  .hero {
    grid-area: hero;
  }

  .picker {
    grid-area: picker;
  }

  .difficulty {
    grid-area: difficulty;
  }

  .play-button {
    grid-area: play;
    margin-top: 0;
  }

  .friend-banner {
    grid-area: banner;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
  }

  .friend-banner__actions .btn {
    flex: none;
  }

  .howto {
    grid-area: howto;
    margin-top: 40px;
  }

  .howto__steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .showcase {
    grid-area: showcase;
    margin-top: 40px;
  }

  /* Desktop: the 3 phones side by side, no scrolling */
  .showcase__list {
    justify-content: center;
    gap: 40px;
    margin: 20px 0 0;
    padding: 4px 0 8px;
    overflow: visible;
  }

  .showcase__item {
    flex: 0 1 240px;
  }
}


/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .carousel__stage .game-button.is-popping,
  .popover,
  .lang__menu {
    animation: none;
  }
}