/* Sparkfall Games — design system.
   Dark neon: near-black base, violet/cyan spark gradient, glow accents.
   System fonts only. No third-party assets. */

:root {
  --bg: #07070f;
  --bg-2: #0b0b18;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-hi: rgba(255, 255, 255, 0.18);
  --text: #eceaf6;
  --text-2: #a7a3bd;
  --text-3: #6f6b88;
  --violet: #8b5cf6;
  --violet-hi: #a78bfa;
  --cyan: #22d3ee;
  --magenta: #f472b6;
  --spark: linear-gradient(100deg, #a78bfa 0%, #60a5fa 45%, #22d3ee 100%);
  --radius: 18px;
  --radius-sm: 12px;
  --wrap: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", "PingFang SC", "Hiragino Sans", "Noto Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: var(--cyan); }

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 7, 15, 0.75);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 60px;
}

.brand {
  font-weight: 800;
  font-size: 1.06rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  background: var(--spark);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
}

.nav nav {
  display: flex;
  align-items: center;
  gap: 4px 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav nav a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}

.nav nav a:hover { color: var(--text); }

.lang-switch {
  max-width: 132px;
  background: var(--surface-2);
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 9px;
  font: inherit;
  font-size: 0.82rem;
  padding: 5px 8px;
}

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

.hero {
  position: relative;
  padding: 108px 0 96px;
  text-align: center;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(52% 44% at 24% 8%, rgba(139, 92, 246, 0.28), transparent 68%),
    radial-gradient(44% 40% at 82% 22%, rgba(34, 211, 238, 0.16), transparent 66%),
    radial-gradient(40% 46% at 55% 96%, rgba(244, 114, 182, 0.10), transparent 70%),
    var(--bg);
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(167, 139, 250, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(167, 139, 250, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(70% 62% at 50% 40%, #000 30%, transparent 100%);
  mask-image: radial-gradient(70% 62% at 50% 40%, #000 30%, transparent 100%);
}

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

.hero-inner { position: relative; }

.hero-kicker {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--violet-hi);
  border: 1px solid rgba(167, 139, 250, 0.35);
  background: rgba(139, 92, 246, 0.10);
  border-radius: 99px;
  padding: 6px 16px;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(2.3rem, 6.4vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0 0 18px;
  font-weight: 800;
}

.hero h1 .grad {
  background: var(--spark);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  color: var(--text-2);
  font-size: clamp(1rem, 2vw, 1.16rem);
  max-width: 620px;
  margin: 0 auto 34px;
}

.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

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

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 14px;
  font-size: 0.97rem;
  font-weight: 650;
  text-decoration: none;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.btn:hover { transform: translateY(-1px); border-color: var(--border-hi); }

.btn-primary {
  background: linear-gradient(100deg, #7c4dff, #4f46e5 55%, #0891b2);
  border: none;
  color: #fff;
  box-shadow: 0 0 22px rgba(124, 77, 255, 0.35);
}

.btn-primary:hover { box-shadow: 0 0 34px rgba(124, 77, 255, 0.55); }

.btn-store {
  background: linear-gradient(100deg, var(--aa, #7c4dff), var(--ab, #0891b2));
  border: none;
  color: #fff;
  box-shadow: 0 0 20px color-mix(in srgb, var(--aa, #7c4dff) 40%, transparent);
}

.btn-soon {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 14px;
  font-size: 0.97rem;
  font-weight: 650;
  color: var(--text-2);
  background: var(--surface);
  border: 1px dashed var(--border-hi);
  cursor: default;
}

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

.sec { padding: 30px 0 10px; }

.sec-head { margin: 46px 0 26px; }

.sec-head h2 {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  font-weight: 800;
}

.sec-head h2 .grad {
  background: var(--spark);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sec-head p { color: var(--text-2); margin: 0; max-width: 560px; }

/* ---------- Game cards (featured) ---------- */

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(420px, 100%), 1fr));
  gap: 22px;
}

.game-card {
  position: relative;
  display: flex;
  gap: 22px;
  align-items: center;
  padding: 30px;
  border-radius: var(--radius);
  background:
    linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
    linear-gradient(135deg, color-mix(in srgb, var(--aa, #8b5cf6) 55%, transparent),
      rgba(255, 255, 255, 0.06) 45%, color-mix(in srgb, var(--ab, #22d3ee) 45%, transparent)) border-box;
  border: 1px solid transparent;
  text-decoration: none;
  color: var(--text);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.game-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 90% at 18% 0%,
    color-mix(in srgb, var(--aa, #8b5cf6) 16%, transparent), transparent 70%);
  pointer-events: none;
}

.game-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.5),
    0 0 40px color-mix(in srgb, var(--aa, #8b5cf6) 22%, transparent);
}

.game-copy { flex: 1; min-width: 0; position: relative; }

.game-copy h3 { font-size: 1.5rem; margin: 14px 0 6px; letter-spacing: -0.01em; }

.game-tagline { color: var(--text); font-weight: 600; margin: 0 0 6px; }

.game-desc { color: var(--text-2); font-size: 0.95rem; margin: 0 0 16px; }

.game-shot {
  flex: 0 0 clamp(120px, 22%, 170px);
  position: relative;
}

.game-shot img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 22px;
  border: 1px solid var(--border-hi);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.55);
  transform: rotate(4deg);
  transition: transform 0.25s ease;
}

.game-card:hover .game-shot img { transform: rotate(1deg) scale(1.03); }

/* Coming-soon teaser card */

.tease-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: 30px;
  border-radius: var(--radius);
  border: 1px dashed rgba(167, 139, 250, 0.4);
  background:
    radial-gradient(70% 100% at 50% 0%, rgba(139, 92, 246, 0.12), transparent 75%),
    var(--surface);
  overflow: hidden;
}

.tease-card h3 {
  margin: 12px 0 2px;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

.tease-card p { color: var(--text-2); margin: 0; font-size: 0.95rem; }

.tease-glyph {
  position: absolute;
  inset-inline-end: -22px;
  bottom: -34px;
  font-size: 9rem;
  line-height: 1;
  opacity: 0.07;
  user-select: none;
  pointer-events: none;
}

/* ---------- Tool cards ---------- */

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: 18px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--aa, #8b5cf6) 55%, var(--border));
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45),
    0 0 24px color-mix(in srgb, var(--aa, #8b5cf6) 14%, transparent);
}

.tool-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }

.app-icon {
  width: 52px;
  height: 52px;
  border-radius: 13px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.45);
}

.badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 11px;
  border-radius: 99px;
  color: color-mix(in srgb, var(--aa, #a78bfa) 80%, #fff);
  background: color-mix(in srgb, var(--aa, #8b5cf6) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--aa, #8b5cf6) 36%, transparent);
  white-space: nowrap;
}

.tool-card h3 { margin: 8px 0 0; font-size: 1.12rem; }

.tool-tagline { color: var(--text-2); font-size: 0.92rem; margin: 0; flex: 1; }

.card-more { color: var(--violet-hi); font-size: 0.88rem; font-weight: 600; }

/* ---------- Values / About ---------- */

.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 18px;
  padding-top: 56px;
  padding-bottom: 8px;
}

.value {
  padding: 22px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
}

.value-ic { font-size: 1.5rem; margin-bottom: 8px; }

.value h3 { margin: 0 0 6px; font-size: 1.02rem; }

.value p { margin: 0; color: var(--text-2); font-size: 0.92rem; }

.about {
  margin: 64px 0 30px;
  padding: 34px;
  border-radius: var(--radius);
  background:
    radial-gradient(80% 120% at 85% 0%, rgba(34, 211, 238, 0.07), transparent 70%),
    var(--surface);
  border: 1px solid var(--border);
}

.about h2 { margin: 0 0 10px; font-size: 1.35rem; letter-spacing: -0.01em; }

.about p { margin: 0; color: var(--text-2); max-width: 720px; }

/* ---------- App detail pages ---------- */

.app-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 56px;
  background:
    radial-gradient(56% 70% at 18% 0%, color-mix(in srgb, var(--aa, #8b5cf6) 22%, transparent), transparent 68%),
    radial-gradient(40% 52% at 92% 30%, color-mix(in srgb, var(--ab, #22d3ee) 14%, transparent), transparent 70%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}

.app-hero-inner {
  display: flex;
  align-items: center;
  gap: 44px;
}

.app-hero-copy { flex: 1; min-width: 0; }

.app-icon-lg {
  width: 88px;
  height: 88px;
  border-radius: 21px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5),
    0 0 30px color-mix(in srgb, var(--aa, #8b5cf6) 26%, transparent);
  margin-bottom: 18px;
}

.app-hero h1 {
  font-size: clamp(1.9rem, 4.6vw, 2.9rem);
  letter-spacing: -0.02em;
  margin: 0 0 10px;
  font-weight: 800;
}

.lede { color: var(--text-2); font-size: 1.08rem; margin: 0 0 26px; max-width: 520px; }

.phone { flex: 0 0 clamp(180px, 26%, 250px); }

.phone-frame {
  border-radius: 34px;
  padding: 10px;
  background: linear-gradient(160deg, var(--pa, #8b5cf6), var(--pb, #22d3ee));
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.55),
    0 0 44px color-mix(in srgb, var(--pa, #8b5cf6) 30%, transparent);
}

.phone-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 26px;
}

.features-sec { padding: 54px 0 8px; }

.features-sec h2 { font-size: 1.5rem; letter-spacing: -0.01em; margin: 0 0 22px; }

.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(250px, 100%), 1fr));
  gap: 16px;
}

.feat {
  padding: 20px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
}

.feat h3 { margin: 0 0 6px; font-size: 1rem; }

.feat p { margin: 0; color: var(--text-2); font-size: 0.92rem; }

.privacy-strip {
  margin: 44px 0;
  padding: 26px;
  border-radius: var(--radius);
  background: rgba(34, 211, 238, 0.05);
  border: 1px solid rgba(34, 211, 238, 0.18);
}

.privacy-strip h2 { margin: 0 0 8px; font-size: 1.15rem; }

.privacy-strip p { margin: 0; color: var(--text-2); }

.disclaimer { font-size: 0.84rem; color: var(--text-3); margin-top: 12px !important; }

/* ---------- Legal hub ---------- */

.legal-hub { min-height: 52vh; padding-top: 22px; }

.legal-list { display: flex; flex-direction: column; gap: 12px; max-width: 640px; }

.legal-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
}

.legal-row .app-icon { width: 44px; height: 44px; border-radius: 11px; }

.legal-row h3 { margin: 0; font-size: 1.02rem; flex: 1; }

.legal-links { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

.legal-links a {
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-2);
  padding: 6px 13px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--surface-2);
}

.legal-links a:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--aa, #8b5cf6) 55%, var(--border));
}

@media (max-width: 480px) {
  .legal-row { flex-wrap: wrap; }
  .legal-links { justify-content: flex-start; width: 100%; }
}

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

.foot {
  margin-top: 60px;
  border-top: 1px solid var(--border);
  padding: 30px 0 44px;
  color: var(--text-3);
  font-size: 0.88rem;
  background: var(--bg-2);
}

.foot a { color: var(--text-2); }

.foot-links { margin-top: 6px; }

/* ---------- Reveal animation ---------- */

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }

.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .game-card, .tool-card, .game-shot img { transition: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .app-hero-inner { flex-direction: column; text-align: center; }
  .app-hero .cta-row { justify-content: center; }
  .app-icon-lg { margin-inline: auto; }
  .lede { margin-inline: auto; }
  .phone { flex-basis: auto; width: min(240px, 62vw); }
}

@media (max-width: 640px) {
  .hero { padding: 76px 0 64px; }
  .game-card { flex-direction: column; text-align: center; padding: 24px; }
  .game-shot { width: min(150px, 44vw); }
  .nav-inner { height: auto; padding: 10px 0; flex-wrap: wrap; }
  .nav nav { gap: 4px 14px; }
}