/* ==========================================================================
   NationCheckPoint — design system
   Inspired by the long-scroll, dusk-to-dawn gradient world of Alto's Odyssey:
   layered parallax silhouettes, generous whitespace, rounded friendly type.
   ========================================================================== */

:root {
  --ink: #1c1330;
  --ink-soft: #4a3f66;
  --cloud: #fff7ef;
  --cloud-dim: #f3e9de;

  --dusk-1: #1b1140;
  --dusk-2: #4a2472;
  --dusk-3: #93379e;
  --dusk-4: #e2568c;

  --sunset-1: #ff7a59;
  --sunset-2: #ff9a56;
  --sunset-3: #ffb347;
  --sunset-4: #ffd97a;

  --dawn-1: #2a5fd6;
  --dawn-2: #28c7f5;
  --dawn-3: #7bdff2;

  --violet: #7b3fe4;
  --coral: #ff7a59;
  --gold: #ffb347;
  --sky: #28c7f5;

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;

  --shadow-soft: 0 20px 45px -20px rgba(27, 17, 64, 0.35);
  --shadow-pop: 0 12px 30px -10px rgba(27, 17, 64, 0.4);

  --max-width: 1180px;

  --font-display: "Quicksand", "Nunito", system-ui, sans-serif;
  --font-body: "Nunito", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cloud);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.5em;
}

p {
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 0 0 1em;
}

a {
  color: inherit;
  text-decoration: none;
}

img, svg {
  max-width: 100%;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------------------------- Buttons ---------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 30px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
}

.btn-primary {
  background: linear-gradient(120deg, var(--coral), var(--violet));
  color: #fff;
  box-shadow: var(--shadow-pop);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 35px -12px rgba(123, 63, 228, 0.55);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(6px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.26);
  transform: translateY(-3px);
}

.btn-dark {
  background: var(--ink);
  color: #fff;
}

.btn-dark:hover {
  transform: translateY(-3px);
  opacity: 0.9;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* ---------------------------- Header ---------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: background 0.35s ease, box-shadow 0.35s ease, padding 0.35s ease;
}

.site-header.is-scrolled {
  background: rgba(28, 19, 48, 0.72);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px -14px rgba(0, 0, 0, 0.5);
  padding: 12px 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: #fff;
  letter-spacing: 0.01em;
}

.brand .brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--sunset-3), var(--violet));
  display: grid;
  place-items: center;
  box-shadow: 0 6px 16px -6px rgba(0,0,0,0.5);
}

.brand .brand-mark svg {
  width: 20px;
  height: 20px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 16px;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  background: rgba(255,255,255,0.14);
  border: none;
  border-radius: 10px;
  width: 42px;
  height: 42px;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    inset: 0 0 auto auto;
    top: 0;
    height: 100vh;
    width: min(80vw, 320px);
    flex-direction: column;
    align-items: stretch;
    background: linear-gradient(180deg, var(--dusk-1), var(--dusk-2));
    padding: 100px 26px 40px;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    gap: 6px;
  }
  .main-nav.is-open {
    transform: translateX(0);
  }
  .main-nav a {
    padding: 14px 18px;
    font-size: 1.05rem;
  }
  .nav-toggle {
    display: grid;
    place-items: center;
  }
}

/* ---------------------------- Parallax scenes ---------------------------- */

.scene {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.scene-sky {
  position: absolute;
  inset: 0;
  z-index: -3;
}

.scene-layers {
  position: absolute;
  inset: 0;
  z-index: -2;
  pointer-events: none;
}

.scene-layer {
  position: absolute;
  left: -5%;
  right: -5%;
  bottom: 0;
  width: 110%;
  will-change: transform;
}

.scene-stars {
  position: absolute;
  inset: 0;
  z-index: -3;
  opacity: 0.7;
}

.scene-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  z-index: -3;
}

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  background: linear-gradient(180deg, var(--dusk-1) 0%, var(--dusk-2) 38%, var(--dusk-3) 68%, var(--sunset-1) 100%);
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 20px;
  text-align: center;
  justify-items: center;
  padding-bottom: 14vh;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255,255,255,0.35);
  padding: 8px 18px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  backdrop-filter: blur(6px);
}

.hero h1 {
  color: #fff;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  max-width: 16ch;
  text-shadow: 0 10px 40px rgba(0,0,0,0.25);
}

.hero .lede {
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.2rem;
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}

.hero-stats {
  display: flex;
  gap: 34px;
  margin-top: 30px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-stats div {
  text-align: center;
}

.hero-stats strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: #fff;
}

.hero-stats span {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.sun {
  position: absolute;
  border-radius: 50%;
  z-index: -1;
}

/* ---------------------------- Sections ---------------------------- */

section {
  position: relative;
}

.section-pad {
  padding: 100px 0;
  background: #e8d5b8;
}

.section-head {
  max-width: 620px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head .kicker {
  display: inline-block;
  color: var(--violet);
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
}

.on-dark .section-head h2,
.on-dark .section-head p {
  color: #fff;
}
.on-dark .section-head p {
  color: rgba(255,255,255,0.75);
}

/* ---------------------------- Game cards ---------------------------- */

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 26px;
}

.game-card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 30px 26px 26px;
  background: #fff;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  display: flex;
  flex-direction: column;
  min-height: 300px;
}

.game-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 55px -20px rgba(27,17,64,0.45);
}

.game-card .card-glow {
  position: absolute;
  inset: -40% -40% auto auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  filter: blur(10px);
  opacity: 0.5;
  z-index: 0;
}

.game-card .card-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  color: #fff;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-pop);
}

.game-card .card-icon svg {
  width: 30px;
  height: 30px;
}

.game-card h3 {
  font-size: 1.3rem;
  position: relative;
  z-index: 1;
}

.game-card p {
  font-size: 0.95rem;
  position: relative;
  z-index: 1;
  flex: 1;
}

.game-card .card-meta {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.pill {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--cloud-dim);
  color: var(--ink-soft);
}

.pill-new {
  background: linear-gradient(120deg, var(--sunset-3), var(--coral));
  color: #fff;
}

.card-play {
  margin-top: auto;
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  color: var(--violet);
  font-family: var(--font-display);
}

.card-play svg {
  width: 16px;
  height: 16px;
  transition: transform 0.25s ease;
}

.game-card:hover .card-play svg {
  transform: translateX(4px);
}

/* ---------------------------- Feature list ---------------------------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
}

.feature {
  text-align: center;
  padding: 10px;
}

.feature .feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 20px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(255,255,255,0.16), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
}

.feature h3 {
  font-size: 1.1rem;
}

.on-dark .feature p {
  color: rgba(255,255,255,0.72);
}

/* ---------------------------- CTA band ---------------------------- */

.cta-band {
  padding: 90px 0;
  text-align: center;
  background: linear-gradient(180deg, var(--dawn-1), var(--dawn-2));
}

.cta-band h2 {
  color: #fff;
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  max-width: 20ch;
  margin: 0 auto 14px;
}

.cta-band p {
  color: rgba(255,255,255,0.85);
  max-width: 46ch;
  margin: 0 auto 30px;
}

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

.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.7);
  padding: 70px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-grid h4 {
  color: #fff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.footer-grid a:hover {
  color: #fff;
}

.footer-brand p {
  color: rgba(255,255,255,0.6);
  max-width: 34ch;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 26px;
  font-size: 0.85rem;
}

.footer-bottom .legal-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------------------------- Game play page ---------------------------- */

.game-hero {
  padding-top: 150px;
  padding-bottom: 60px;
  color: #fff;
}

.game-hero .container {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  color: rgba(255,255,255,0.75);
  font-size: 0.88rem;
  margin-bottom: 18px;
}

.breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}

.game-hero h1 {
  color: #fff;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
}

.game-hero .lede {
  color: rgba(255,255,255,0.85);
  max-width: 60ch;
  font-size: 1.1rem;
}

.game-tags {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.game-tags .pill {
  background: rgba(255,255,255,0.16);
  color: #fff;
}

.game-stage-wrap {
  background: #fff;
  padding: 26px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  margin-top: -30px;
  position: relative;
  z-index: 3;
}

.game-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #0d0a1c;
  display: flex;
  align-items: center;
  justify-content: center;
}

.game-stage canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.game-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: rgba(13, 10, 28, 0.72);
  color: #fff;
  text-align: center;
  padding: 20px;
  transition: opacity 0.3s ease;
}

.game-overlay.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.game-overlay h3 {
  color: #fff;
  font-size: 1.6rem;
  margin-bottom: 0;
}

.game-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
}

.scoreboard {
  display: flex;
  gap: 22px;
  font-family: var(--font-display);
  font-weight: 700;
}

.scoreboard .score-item {
  text-align: center;
}

.scoreboard .score-item span {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  font-weight: 700;
}

.scoreboard .score-item strong {
  font-size: 1.6rem;
  color: var(--ink);
}

.game-info-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  margin-top: 70px;
  align-items: start;
}

@media (max-width: 860px) {
  .game-info-grid {
    grid-template-columns: 1fr;
  }
}

.how-to-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.how-to-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow-soft);
}

.how-to-list .step-num {
  flex: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--coral), var(--violet));
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
}

.info-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-soft);
  margin-bottom: 20px;
}

.info-card h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--violet);
}

.related-games {
  margin-top: 90px;
}

/* ---------------------------- Prose / legal pages ---------------------------- */

.prose-page {
  padding-top: 150px;
  padding-bottom: 90px;
}

.prose-page .page-title {
  margin-bottom: 6px;
}

.prose-page .updated {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin-bottom: 40px;
  display: block;
}

.prose {
  max-width: 760px;
}

.prose h2 {
  font-size: 1.3rem;
  margin-top: 2em;
}

.prose ul {
  color: var(--ink-soft);
  line-height: 1.8;
}

.prose a {
  color: var(--violet);
  font-weight: 700;
  text-decoration: underline;
}

/* ---------------------------- About / Contact ---------------------------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

@media (max-width: 860px) {
  .split {
    grid-template-columns: 1fr;
  }
}

.stat-row {
  display: flex;
  gap: 40px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.stat-row strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  background: linear-gradient(120deg, var(--coral), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.value-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-soft);
}

.value-card h3 {
  font-size: 1.1rem;
}

.team-note {
  background: linear-gradient(135deg, rgba(123,63,228,0.08), rgba(255,122,89,0.08));
  border-radius: var(--radius-lg);
  padding: 34px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

@media (max-width: 860px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-soft);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.contact-card .contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--coral), var(--violet));
  display: grid;
  place-items: center;
  color: #fff;
  flex: none;
}

form.contact-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 18px;
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row label {
  font-weight: 700;
  font-size: 0.9rem;
}

.form-row input,
.form-row textarea,
.form-row select {
  border: 1.5px solid #e7e0f5;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 1rem;
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
  outline: none;
  border-color: var(--violet);
}

.form-success {
  background: linear-gradient(120deg, rgba(40,199,245,0.14), rgba(123,63,228,0.14));
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-weight: 700;
  color: var(--ink);
}

/* ---------------------------- 404 ---------------------------- */

.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  background: linear-gradient(180deg, var(--dusk-1), var(--dusk-3), var(--sunset-2));
  padding: 40px 20px;
}

.error-page h1 {
  font-size: clamp(4rem, 12vw, 8rem);
  color: #fff;
  margin-bottom: 0;
}

/* ---------------------------- Reveal-on-scroll ---------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------------------------- Age / footer note ---------------------------- */

.footnote-strip {
  background: #120b26;
  color: rgba(255,255,255,0.5);
  font-size: 0.78rem;
  padding: 16px 0;
  text-align: center;
}