@import url("https://fonts.googleapis.com/css2?family=Share+Tech+Mono&display=swap");

:root {
  --bg: #03070d;
  --panel: rgba(7, 14, 25, 0.88);
  --panel-soft: rgba(9, 20, 34, 0.74);
  --line: rgba(0, 255, 170, 0.32);
  --line-strong: rgba(0, 255, 170, 0.72);
  --text: #ecfff9;
  --muted: #aacbc4;
  --dim: #7f9f98;
  --mint: #00ffaa;
  --cyan: #00d5ff;
  --purple: #b36cff;
  --amber: #ffe66b;
  --danger: #ff5b7b;
  --shadow: 0 0 24px rgba(0, 255, 170, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(180deg, rgba(0, 255, 170, 0.05), transparent 520px),
    linear-gradient(135deg, rgba(179, 108, 255, 0.08), transparent 42%),
    var(--bg);
  color: var(--text);
  font-family: "Share Tech Mono", Consolas, monospace;
  line-height: 1.6;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  z-index: 0;
  opacity: 0.16;
  background-image:
    linear-gradient(to right, rgba(0, 255, 170, 0.12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 255, 170, 0.12) 1px, transparent 1px);
  background-size: 48px 48px;
}

body::after {
  z-index: 1;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 4px;
}

.site-header,
.page-shell,
.site-footer {
  position: relative;
  z-index: 2;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(1, 5, 10, 0.84);
  backdrop-filter: blur(14px);
}

.header-inner,
.page-shell,
.footer-inner {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand-link,
.nav-link {
  text-decoration: none;
}

.brand-link {
  color: var(--mint);
  font-size: 1.05rem;
  text-shadow: 0 0 12px rgba(0, 255, 170, 0.46);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 16px;
}

.nav-link {
  color: var(--muted);
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}

.nav-link:hover {
  color: var(--mint);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  gap: 44px;
  align-items: center;
  padding: 64px 0 58px;
}

.kicker {
  margin: 0 0 12px;
  color: var(--cyan);
  text-transform: uppercase;
  font-size: 0.88rem;
}

h1,
h2,
h3 {
  color: #ffffff;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: 3rem;
  text-shadow:
    0 0 14px rgba(0, 255, 170, 0.42),
    0 0 24px rgba(179, 108, 255, 0.24);
}

.hero-lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--text);
  font-size: 1.14rem;
  overflow-wrap: anywhere;
}

.hero-actions,
.tool-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.primary-cta,
.secondary-cta,
.tool-button {
  max-width: 100%;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 12px 18px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  text-align: center;
  overflow-wrap: anywhere;
}

.primary-cta,
.tool-button.primary {
  border: 1px solid rgba(0, 255, 170, 0.86);
  background: linear-gradient(90deg, var(--mint), var(--cyan));
  color: #00130d;
  box-shadow: var(--shadow);
}

.secondary-cta,
.tool-button.secondary {
  border: 1px solid var(--line-strong);
  background: rgba(0, 255, 170, 0.05);
  color: var(--mint);
}

.primary-cta:hover,
.secondary-cta:hover,
.tool-button:hover {
  transform: translateY(-2px);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-visual .tool-card {
  width: 100%;
}

.app-icon {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(0, 255, 170, 0.42));
}

.tool-card,
.preview-card,
.faq-list details,
.text-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 0 18px rgba(0, 213, 255, 0.12);
}

.tool-card {
  padding: 22px;
}

.tool-card h2,
.section-heading h2 {
  margin: 0;
  font-size: 2rem;
}

.tool-card p,
.section-heading p,
.text-panel p,
.faq-list p {
  color: var(--muted);
}

.mini-result {
  min-height: 32px;
  margin: 16px 0 0;
  color: var(--amber);
  font-size: 1.05rem;
}

.install-result {
  margin-top: 18px;
  border: 1px solid rgba(255, 230, 107, 0.46);
  border-radius: 8px;
  padding: 16px;
  background:
    linear-gradient(135deg, rgba(255, 230, 107, 0.1), rgba(0, 213, 255, 0.06)),
    rgba(0, 0, 0, 0.24);
}

.install-result[hidden] {
  display: none;
}

.install-result strong {
  display: block;
  color: #ffffff;
  font-size: 1.16rem;
}

.install-result p {
  margin: 8px 0 0;
}

.install-result .primary-cta {
  margin-top: 14px;
}

.timer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 18px 0 14px;
}

.timer-value {
  color: var(--amber);
  font-size: 1.7rem;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 9px;
}

.color-cell {
  min-height: 58px;
  border: 2px solid transparent;
  border-radius: 7px;
  background: var(--tile-color, #39e6c1);
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.color-cell:hover {
  transform: translateY(-2px);
}

.color-cell.is-correct {
  border-color: var(--amber);
  box-shadow: 0 0 18px rgba(255, 230, 107, 0.64);
}

.classic-game {
  position: relative;
  margin-top: 18px;
}

.classic-game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #ffffff;
}

.classic-game-header strong {
  font-size: 1.18rem;
}

.classic-game-header span {
  color: var(--amber);
  font-size: 1.28rem;
  font-weight: 700;
}

.classic-progress {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 6px;
  margin: 14px 0;
  border: 1px solid rgba(255, 230, 107, 0.24);
  border-radius: 999px;
  padding: 9px 12px;
  background: rgba(255, 230, 107, 0.08);
}

.classic-progress-segment {
  height: 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
}

.classic-progress-segment.is-current {
  background: #ffffff;
}

.classic-progress-segment.is-correct {
  background: var(--amber);
}

.classic-progress-segment.is-wrong {
  background: var(--danger);
}

.classic-combo {
  min-height: 0;
  position: absolute;
  z-index: 4;
  top: 96px;
  left: 50%;
  border: 1px solid rgba(255, 230, 107, 0.72);
  border-radius: 8px;
  padding: 10px 18px;
  background: rgba(0, 0, 0, 0.68);
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 8px) scale(0.94);
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.classic-combo.is-visible {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

.classic-feedback {
  min-height: 32px;
  margin: 0 0 12px;
  color: var(--amber);
}

.classic-memory-card,
.classic-choice-tile {
  width: 100%;
  border: 2px solid rgba(255, 255, 255, 0.42);
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, opacity 0.24s ease;
}

.classic-memory-card[hidden],
.classic-choice-stage[hidden] {
  display: none;
}

.classic-memory-card {
  min-height: 310px;
  display: flex;
  align-items: flex-start;
  padding: 20px;
  background: var(--answer-color, #5c4bb3);
  box-shadow: inset 0 0 22px rgba(255, 255, 255, 0.08);
}

.classic-memory-card span {
  max-width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 8px;
  padding: 9px 13px;
  background: rgba(11, 8, 38, 0.68);
  color: #ffffff;
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.18;
}

.classic-memory-card:hover,
.classic-choice-tile:hover {
  border-color: var(--amber);
  box-shadow: 0 0 18px rgba(255, 230, 107, 0.34);
}

.classic-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.classic-choice-tile {
  position: relative;
  min-height: 138px;
  overflow: hidden;
}

.choice-count-6 .classic-choice-tile {
  min-height: 104px;
}

.classic-choice-tile.is-correct-choice,
.classic-choice-tile.is-answer-reveal {
  border-color: var(--amber);
  box-shadow: 0 0 0 6px rgba(255, 230, 107, 0.42), 0 0 18px rgba(255, 230, 107, 0.32);
}

.classic-check {
  width: 58px;
  height: 58px;
  position: absolute;
  top: 50%;
  left: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: #ffffff;
  color: #4b3c9d;
  font-family: Arial, sans-serif;
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
  transform: translate(-50%, -50%) scale(0);
  animation: classicCheckPop 0.24s ease forwards;
}

.classic-choice-tile.is-breaking {
  border-color: rgba(255, 91, 123, 0.66);
  background: rgba(255, 91, 123, 0.08) !important;
}

.classic-choice-tile.is-breaking::after {
  content: "";
  position: absolute;
  inset: 13%;
  border: 2px solid rgba(255, 91, 123, 0.52);
  border-radius: 8px;
  background: rgba(179, 108, 255, 0.14);
  animation: classicWrongCoreFade 1.05s ease forwards;
}

.classic-tile-fragments {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 10px;
  pointer-events: none;
}

.classic-tile-fragments span {
  border-radius: 6px;
  background: var(--piece-color);
  opacity: 0.72;
  box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.14);
  animation: classicBreakPiece 1.04s ease forwards;
}

.classic-tile-fragments span:nth-child(1) { --x: -20px; --y: -24px; --r: -18deg; }
.classic-tile-fragments span:nth-child(2) { --x: 4px; --y: -22px; --r: 13deg; }
.classic-tile-fragments span:nth-child(3) { --x: 22px; --y: -24px; --r: -9deg; }
.classic-tile-fragments span:nth-child(4) { --x: -24px; --y: 2px; --r: 8deg; }
.classic-tile-fragments span:nth-child(5) { --x: 0; --y: 6px; --r: 0deg; }
.classic-tile-fragments span:nth-child(6) { --x: 24px; --y: 2px; --r: 11deg; }
.classic-tile-fragments span:nth-child(7) { --x: -20px; --y: 24px; --r: 12deg; }
.classic-tile-fragments span:nth-child(8) { --x: 6px; --y: 23px; --r: -15deg; }
.classic-tile-fragments span:nth-child(9) { --x: 24px; --y: 24px; --r: 17deg; }

.classic-choice-preview {
  grid-template-columns: repeat(2, 72px);
  gap: 12px;
}

.classic-choice-preview span {
  width: 72px;
  height: 72px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 8px;
  background: #5c4bb3;
}

.classic-choice-preview span:nth-child(2) {
  background: #6f1e7b;
}

.classic-choice-preview span:nth-child(3) {
  background: #63afd0;
}

.classic-choice-preview span:nth-child(4) {
  border-color: var(--amber);
  background: #5c4bb3;
  box-shadow: 0 0 16px rgba(255, 230, 107, 0.4);
}

@keyframes classicCheckPop {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.54);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes classicWrongCoreFade {
  to {
    opacity: 0.08;
    transform: scale(0.88);
  }
}

@keyframes classicBreakPiece {
  to {
    opacity: 0;
    transform: translate(var(--x), var(--y)) rotate(var(--r));
  }
}

.text-input,
.alien-output {
  width: 100%;
  min-height: 112px;
  border: 1px solid rgba(0, 213, 255, 0.34);
  border-radius: 8px;
  padding: 14px;
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
  resize: vertical;
}

.alien-output {
  overflow-wrap: anywhere;
  color: var(--mint);
  font-size: 1.08rem;
}

.ufo-stage {
  position: relative;
  min-height: 330px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(0, 213, 255, 0.28);
  border-radius: 8px;
  background:
    radial-gradient(circle at center, rgba(0, 255, 170, 0.12), transparent 35%),
    rgba(0, 0, 0, 0.28);
}

.ufo-button {
  width: 148px;
  height: 148px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: radial-gradient(circle, var(--mint), #016b5a 65%, #001a18);
  color: #00130d;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 0 24px rgba(0, 255, 170, 0.44);
}

.ufo-ring {
  position: absolute;
  width: 170px;
  height: 170px;
  border: 1px solid rgba(0, 255, 170, 0.46);
  border-radius: 999px;
  opacity: 0;
}

.ufo-stage.is-calling .ufo-ring {
  animation: signalRing 1.3s ease-out infinite;
}

.ufo-stage.is-calling .ufo-ring:nth-child(2) {
  animation-delay: 0.38s;
}

.ufo-log {
  min-height: 28px;
  color: var(--amber);
}

@keyframes signalRing {
  from {
    opacity: 0.82;
    transform: scale(0.72);
  }
  to {
    opacity: 0;
    transform: scale(2.4);
  }
}

.section {
  padding: 64px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 24px;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.preview-card {
  min-height: 250px;
  padding: 18px;
}

.phone-preview {
  min-height: 170px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(0, 213, 255, 0.24);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.28);
}

.preview-card h3 {
  margin: 14px 0 6px;
}

.preview-card p {
  margin: 0;
  color: var(--muted);
}

.mock-grid {
  width: min(170px, 80%);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.mock-grid span {
  aspect-ratio: 1;
  border-radius: 5px;
  background: var(--mint);
}

.mock-grid span:nth-child(9) {
  background: #1fb797;
  box-shadow: 0 0 12px rgba(255, 230, 107, 0.62);
}

.mock-message,
.mock-signal {
  color: var(--mint);
  font-size: 1.2rem;
  text-align: center;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list summary {
  min-height: 54px;
  display: flex;
  align-items: center;
  padding: 15px 18px;
  color: #ffffff;
  cursor: pointer;
}

.faq-list p {
  margin: 0;
  padding: 0 18px 18px;
}

.text-panel {
  padding: 20px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 30px 0;
  background: rgba(1, 5, 10, 0.84);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
}

.footer-inner p {
  margin: 4px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 16px;
}

.footer-inner a {
  color: var(--mint);
  text-decoration: none;
}

.mobile-sticky-cta {
  display: none;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 40px 0 56px;
  }

  .hero-visual {
    justify-content: flex-start;
  }

  .preview-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  h1 {
    font-size: 1.72rem;
    line-height: 1.22;
  }

  .tool-card h2,
  .section-heading h2 {
    font-size: 1.58rem;
  }

  .hero-actions,
  .tool-actions,
  .section-actions {
    flex-direction: column;
  }

  .primary-cta,
  .secondary-cta,
  .tool-button {
    width: 100%;
  }

  .color-cell {
    min-height: 48px;
  }

  .classic-memory-card {
    min-height: 250px;
    padding: 16px;
  }

  .classic-memory-card span {
    font-size: 1.18rem;
  }

  .classic-choice-grid {
    gap: 10px;
  }

  .classic-choice-tile {
    min-height: 106px;
  }

  .choice-count-6 .classic-choice-tile {
    min-height: 88px;
  }

  .classic-check {
    width: 48px;
    height: 48px;
    font-size: 2.45rem;
  }
}

@media (max-width: 380px) {
  h1 {
    font-size: 1.58rem;
  }
}

@media (max-width: 768px) {
  body.has-mobile-sticky {
    padding-bottom: 96px;
  }

  .mobile-sticky-cta.is-visible {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 30;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    padding: 10px;
    background: rgba(3, 7, 13, 0.96);
    box-shadow: 0 0 24px rgba(0, 255, 170, 0.3);
    color: #ffffff;
  }

  .mobile-sticky-close {
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.04);
    color: #ffffff;
    cursor: pointer;
  }

  .mobile-sticky-link {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    padding: 10px 14px;
    background: linear-gradient(90deg, var(--mint), var(--cyan));
    color: #00130d;
    font-weight: 700;
    text-decoration: none;
  }
}

@media (max-width: 420px) {
  .mobile-sticky-cta.is-visible {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .mobile-sticky-link {
    grid-column: 1 / -1;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}