/* kidenv design system — the polished, kid-friendly baseline every app starts from.
   Build to these tokens and components: it's how a generated app reaches "app-store" polish.
   See DESIGN.md for the rules and CHECKLIST.md for the gate. Vanilla CSS, zero deps. */

:root {
  color-scheme: light dark;

  /* --- Palette: bright and friendly, never harsh. Tuned for AA contrast on --surface. --- */
  --brand:        #5b4bff;   /* primary action / identity */
  --brand-ink:    #ffffff;   /* text on --brand */
  --accent:       #ff5fa2;   /* playful highlight */
  --sun:          #ffb020;   /* warm secondary (amber) */

  /* Feedback colors — encouraging, not shaming. "Try again" is a calm slate, never red. */
  --go:           #1faa59;   /* start / correct / success (green) */
  --go-ink:       #ffffff;
  --stop:         #ff6b5e;   /* stop / pause (warm coral, not alarm-red) */
  --stop-ink:     #3a0d09;
  --calm:         #6b7a99;   /* gentle "try again" — neutral, low-anxiety */

  /* Surfaces & ink — DEEP SPACE JEWEL CAVE theme */
  --surface:      #0d0820;   /* deep space */
  --card:         #17123a;   /* cavern alcove */
  --ink:          #f3f0ff;   /* white-ish on dark */
  --ink-soft:     #bfb6e0;   /* muted on dark */
  --line:         #2a1f5a;   /* borders */

  /* Shape, space, type. Generous and rounded reads as friendly. */
  --radius:       18px;
  --radius-lg:    28px;
  --tap-min:      64px;
  --tap-primary:  clamp(72px, 11vh, 104px);
  --gap:          clamp(0.75rem, 2.5vw, 1.25rem);
  --pad:          clamp(1rem, 4vw, 1.5rem);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --shadow:    0 6px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 14px 40px rgba(0, 0, 0, 0.65);

  /* Jewel cave custom */
  --gem-glow: 0 0 18px rgba(160, 100, 255, 0.6);
  --slot-bg: #1a1340;
  --slot-selected-glow: 0 0 0 3px #ffd700, 0 0 20px rgba(255, 215, 0, 0.5);
  --gold: #ffd700;
  --gold-dark: #b8860b;
}

* { box-sizing: border-box; }
html { height: 100%; overflow-x: hidden; }
body { height: 100%; }

body {
  margin: 0;
  min-height: 100svh;
  font: clamp(14px, 2.2vw, 17px)/1.5 var(--font);
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(91, 75, 255, 0.3), transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(155, 93, 229, 0.2), transparent 50%),
    radial-gradient(ellipse 50% 30% at 20% 60%, rgba(0, 180, 216, 0.15), transparent 50%),
    var(--surface);
  padding:
    max(var(--pad), env(safe-area-inset-top))
    max(var(--pad), env(safe-area-inset-right))
    max(var(--pad), env(safe-area-inset-bottom))
    max(var(--pad), env(safe-area-inset-left));
  display: grid;
  place-items: start center;
  overflow-x: hidden;
}

/* ── Layout helpers ── */
.app {
  width: min(40rem, 100%);
  max-width: 100%;
  display: grid;
  gap: var(--gap);
  justify-items: center;
  text-align: center;
  overflow: hidden;
}

.stack { display: grid; gap: var(--gap); }
.row { display: flex; flex-wrap: wrap; gap: var(--gap); justify-content: center; }

.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: var(--pad);
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--line);
  overflow: hidden;
}

/* ── Typography ── */
h1 { font-size: clamp(1.8rem, 6vw, 2.8rem); line-height: 1.1; margin: 0 0 0.25em; }
h2 { font-size: clamp(1.1rem, 3.5vw, 1.5rem); margin: 0 0 0.4em; }
p  { color: var(--ink-soft); margin: 0.4em 0; }
.lead { font-size: 1.1em; color: var(--ink-soft); }

/* ── Buttons ── */
.btn {
  -webkit-tap-highlight-color: transparent;
  appearance: none;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  color: var(--brand-ink);
  background: var(--brand);
  min-height: var(--tap-min);
  min-width: var(--tap-min);
  padding: 0 clamp(1.1rem, 4vw, 1.8rem);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  transition: transform 0.08s ease, box-shadow 0.15s ease, filter 0.15s ease;
}
.btn:hover { filter: brightness(1.1); box-shadow: var(--shadow-lg); }
.btn:active { transform: translateY(2px) scale(0.97); }
.btn:focus-visible { outline: 4px solid rgba(255, 215, 0, 0.7); outline-offset: 3px; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.4; cursor: not-allowed; box-shadow: none; filter: none; transform: none; }
.btn-xl { min-height: var(--tap-primary); font-size: clamp(1.1rem, 3.5vw, 1.4rem); border-radius: var(--radius-lg); padding: 0 clamp(1.5rem, 6vw, 2.5rem); }
.btn-go   { background: var(--go); color: var(--go-ink); }
.btn-stop { background: var(--stop); color: var(--stop-ink); }
.btn-cool { background: linear-gradient(135deg, #ffb020, #ff8c00); color: #1a0a00; font-weight: 900; }
.btn-ghost { background: rgba(255,255,255,0.07); color: var(--ink-soft); box-shadow: none; border: 1px solid var(--line); min-height: var(--tap-min); font-size: 0.85em; }
.btn-sm { min-height: var(--tap-min); padding: 0 1rem; font-size: 0.85em; }

/* ── Big readout ── */
.display {
  font-variant-numeric: tabular-nums;
  font-weight: 900;
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}

/* ── Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

@keyframes pop { 0% { transform: scale(1); } 40% { transform: scale(1.18); } 100% { transform: scale(1); } }
.pop { animation: pop 0.35s cubic-bezier(0.34, 1.56, 0.64, 1); }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: var(--gem-glow); }
  50% { box-shadow: 0 0 30px rgba(160, 100, 255, 0.9); }
}

/* ═══════════════════════════════════════════════════════════
   GAME-SPECIFIC STYLES — Jewel Tycoon / Deep Space Cave
   ═══════════════════════════════════════════════════════════ */

/* ── Particle canvas ── */
#particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
}

/* ── HUD header ── */
.hud-header {
  width: 100%;
  text-align: center;
  overflow: hidden;
}

.game-title {
  font-size: clamp(1.6rem, 6vw, 2.6rem);
  font-weight: 900;
  margin: 0 0 0.3em;
  background: linear-gradient(135deg, #ffd700, #ff5fa2, #9b5de5, #00b4d8);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: title-shimmer 4s ease infinite;
  letter-spacing: 0.02em;
  max-width: 100%;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

@keyframes title-shimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hud-row {
  display: flex;
  gap: clamp(0.4rem, 1.5vw, 0.75rem);
  justify-content: center;
  flex-wrap: nowrap;
  width: 100%;
}

.hud-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.4rem 0.5rem;
  flex: 1 1 0;
  min-width: 0;
  box-shadow: var(--shadow);
}

.hud-icon { font-size: 1.3rem; line-height: 1; }

.hud-val {
  font-weight: 900;
  font-size: clamp(1.1rem, 4vw, 1.6rem);
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

/* Override display on hud-val */
.hud-stat .display {
  font-size: clamp(1.3rem, 5vw, 2rem);
}

.hud-label {
  font-size: 0.7rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.1em;
}

/* Countdown to the next 20-second coin payout */
.payout-meter {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.6rem;
}

.payout-icon { font-size: 1.1rem; line-height: 1; }

.payout-bar-wrap {
  flex: 1 1 auto;
  height: 12px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 99px;
  overflow: hidden;
}

.payout-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #ffb347, var(--gold));
  border-radius: 99px;
}

.payout-text {
  font-size: 0.7rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

/* ── Gem grid section ── */
.grid-section { padding: var(--pad); }

.grid-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.grid-label {
  font-weight: 800;
  font-size: 1rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.merge-hint {
  font-size: 0.8rem;
  color: var(--gold);
  font-weight: 700;
  animation: hint-pulse 1.5s ease infinite;
}

@keyframes hint-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ── Gem grid ── */
.gem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(0.5rem, 2vw, 0.875rem);
}

@media (min-width: 420px) {
  .gem-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 560px) {
  .gem-grid { grid-template-columns: repeat(5, 1fr); }
}

/* ── Gem slot ── */
.gem-slot {
  aspect-ratio: 1;
  border-radius: var(--radius);
  background: var(--slot-bg);
  border: 2px solid var(--line);
  cursor: pointer;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  transition: transform 0.12s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  min-height: var(--tap-min);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  padding: 4px;
}

.gem-slot:hover {
  border-color: rgba(255, 215, 0, 0.4);
  transform: translateY(-2px);
}

.gem-slot:focus-visible {
  outline: 4px solid var(--gold);
  outline-offset: 2px;
}

.gem-slot.selected {
  box-shadow: var(--slot-selected-glow);
  border-color: var(--gold);
  transform: scale(1.06) translateY(-2px);
  z-index: 2;
  animation: selected-bounce 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes selected-bounce {
  0% { transform: scale(1); }
  60% { transform: scale(1.1) translateY(-3px); }
  100% { transform: scale(1.06) translateY(-2px); }
}

.gem-slot.empty {
  border-style: dashed;
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(26, 19, 64, 0.5);
}

.empty-slot-icon {
  font-size: 1.8rem;
  color: rgba(255, 255, 255, 0.15);
  line-height: 1;
  pointer-events: none;
}

.gem-slot-label {
  font-size: 0.6rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  pointer-events: none;
  position: absolute;
  top: 3px;
  left: 4px;
  line-height: 1;
}

.gem-cps-label {
  font-size: 0.55rem;
  font-weight: 700;
  color: var(--gold);
  pointer-events: none;
  position: absolute;
  bottom: 3px;
  left: 0;
  right: 0;
  text-align: center;
  line-height: 1;
}

/* ── Gem visual (CSS gem shape) ── */
.gem-visual {
  width: 52%;
  aspect-ratio: 0.8;
  position: relative;
  pointer-events: none;
  clip-path: polygon(50% 0%, 100% 35%, 85% 100%, 15% 100%, 0% 35%);
  background: linear-gradient(
    135deg,
    var(--gem-shine) 0%,
    var(--gem-color) 35%,
    var(--gem-dark) 100%
  );
  filter: drop-shadow(0 0 8px var(--gem-color));
  animation: gem-float 3s ease-in-out infinite;
  flex-shrink: 0;
}

.gem-visual::after {
  content: '';
  position: absolute;
  top: 8%;
  left: 20%;
  width: 25%;
  height: 30%;
  background: rgba(255, 255, 255, 0.5);
  clip-path: polygon(0 0, 100% 0, 60% 100%, 0 80%);
  border-radius: 2px;
}

@keyframes gem-float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-3px) scale(1.02); }
}

.gem-sparkle {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 25%, rgba(255,255,255,0.6) 0%, transparent 40%);
  pointer-events: none;
}

/* Tier-specific colors using CSS custom properties */
.tier-1  { --gem-color: #ff4d6d; --gem-dark: #c9184a; --gem-shine: #ffb3c1; }
.tier-2  { --gem-color: #ff8c00; --gem-dark: #e65100; --gem-shine: #ffd180; }
.tier-3  { --gem-color: #ffd700; --gem-dark: #f59e0b; --gem-shine: #fff9c4; }
.tier-4  { --gem-color: #6bcb77; --gem-dark: #2d6a4f; --gem-shine: #b7e4c7; }
.tier-5  { --gem-color: #00b4d8; --gem-dark: #0077b6; --gem-shine: #90e0ef; }
.tier-6  { --gem-color: #4361ee; --gem-dark: #1b2a8a; --gem-shine: #a8c0ff; }
.tier-7  { --gem-color: #9b5de5; --gem-dark: #5a0080; --gem-shine: #d5a6fa; }
.tier-8  { --gem-color: #ff70a6; --gem-dark: #c9006a; --gem-shine: #ffc8dd; }
.tier-9  { --gem-color: #e0e0e0; --gem-dark: #9e9e9e; --gem-shine: #ffffff; }
.tier-10 { --gem-color: #b8ffff; --gem-dark: #00bcd4; --gem-shine: #ffffff; }
.tier-11 { --gem-color: #fffbcc; --gem-dark: #f5c518; --gem-shine: #ffffff; }
.tier-12 { --gem-color: #ff6fff; --gem-dark: #b000b0; --gem-shine: #ffffff; }
.tier-13 { --gem-color: #cfe8ff; --gem-dark: #79a6cf; --gem-shine: #ffffff; }
.tier-14 { --gem-color: #10c95f; --gem-dark: #066b34; --gem-shine: #86ffbb; }
.tier-15 { --gem-color: #19ddcb; --gem-dark: #0b857a; --gem-shine: #a6fff2; }
.tier-16 { --gem-color: #6d5cff; --gem-dark: #2c2a9c; --gem-shine: #c6bdff; }
.tier-17 { --gem-color: #e22452; --gem-dark: #7f0f28; --gem-shine: #ff9aae; }
.tier-18 { --gem-color: #4b3f7a; --gem-dark: #1c1733; --gem-shine: #9be7ff; }
.tier-19 { --gem-color: #ff8fd6; --gem-dark: #c43a93; --gem-shine: #ffffff; }
.tier-20 { --gem-color: #2b2b3d; --gem-dark: #0a0a12; --gem-shine: #cfe0ff; }

/* ── Shop ── */
.shop-section { padding: var(--pad); }

.shop-header {
  margin-bottom: 0.75rem;
}

.shop-title {
  font-size: clamp(1.1rem, 3.5vw, 1.4rem);
  font-weight: 900;
  color: var(--gold);
  margin: 0 0 0.2em;
}

.shop-sub {
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.shop-items {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 400px) {
  .shop-items { grid-template-columns: 1fr 1fr; }
}

.shop-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.shop-item:not(.shop-item--disabled):hover {
  border-color: rgba(255, 215, 0, 0.3);
  background: rgba(255, 215, 0, 0.05);
}

.shop-item--disabled {
  opacity: 0.55;
}

.shop-gem {
  width: 44px !important;
  aspect-ratio: 0.8;
  flex-shrink: 0;
  animation: none !important;
}

.shop-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-align: left;
  min-width: 0;
}

.shop-name {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.shop-cps {
  font-size: 0.75rem;
  color: var(--gold);
  font-weight: 700;
}

.shop-buy-btn {
  min-height: var(--tap-min);
  min-width: 80px;
  font-size: 0.85rem;
  padding: 0 0.75rem;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Progress section ── */
.progress-section { padding: var(--pad); }

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.progress-label {
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.progress-val {
  font-size: 0.8rem;
  color: var(--gold);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.progress-bar-wrap {
  height: 14px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #4361ee, #9b5de5, #ffd700);
  border-radius: 99px;
  transition: width 0.5s ease;
  min-width: 4px;
}

.progress-tip {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin: 0;
}

/* ── Footer ── */
.game-footer {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.5rem;
}

.reset-confirm {
  width: 100%;
  background: rgba(255, 107, 94, 0.12);
  border: 1px solid rgba(255, 107, 94, 0.35);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  text-align: center;
}

.reset-confirm[hidden] { display: none; }

.reset-confirm-msg {
  margin: 0 0 0.6rem;
  font-weight: 700;
  color: var(--ink);
  font-size: 0.9rem;
}

.reset-confirm-btns {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Level-up toast ── */
.levelup-toast {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  background: linear-gradient(135deg, #17123a, #2a1f5a);
  border: 2px solid var(--gold);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  text-align: center;
  z-index: 1000;
  box-shadow: 0 0 40px rgba(255, 215, 0, 0.4), var(--shadow-lg);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.levelup-toast.toast-show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.levelup-text {
  display: block;
  font-size: clamp(2rem, 8vw, 3rem);
  font-weight: 900;
  color: var(--gold);
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.6);
  line-height: 1;
}

.levelup-sub {
  display: block;
  font-size: 1rem;
  color: var(--ink-soft);
  margin-top: 0.4rem;
}

/* ── Away modal ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 3, 18, 0.85);
  display: grid;
  place-items: center;
  z-index: 2000;
  padding: var(--pad);
}

.modal-backdrop[hidden] { display: none; }

.modal-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 22rem;
  width: 100%;
  text-align: center;
  box-shadow: 0 0 60px rgba(91, 75, 255, 0.4), var(--shadow-lg);
  animation: modal-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modal-in {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.modal-card h2 {
  color: var(--gold);
  font-weight: 900;
  font-size: clamp(1.4rem, 5vw, 1.8rem);
  margin: 0.75rem 0 0.5rem;
}

.modal-card p {
  color: var(--ink-soft);
  margin: 0.3rem 0;
}

.away-coins {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--gold) !important;
  text-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
  margin: 0.5rem 0 1rem !important;
}

.modal-card .gem-visual {
  width: 64px;
  margin: 0 auto 0.5rem;
}

/* ── Stars background decoration ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1.5px 1.5px at 15% 20%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 35% 8%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(2px 2px at 55% 15%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 75% 5%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 90% 25%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 5% 45%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 25% 55%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 65% 70%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(2px 2px at 85% 60%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 45% 85%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 10% 90%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 90%, rgba(255,255,255,0.3) 0%, transparent 100%);
  z-index: 0;
}

.app { position: relative; z-index: 1; }