/* ============================================================
   NZOPAC // GRID 64  —  interface skin
   Palette variables are injected at runtime from the seed.
   ============================================================ */

:root {
  --c-primary: #4fc3ff;
  --c-accent:  #ffab4a;
  --c-danger:  #ff3b6b;
  --c-bg:      #070b10;
  --c-ink:     #e6f2fb;
  --c-dim:     #6b8398;
  --c-line:    rgba(120, 180, 220, 0.16);
  --c-line-hi: rgba(140, 200, 240, 0.34);
  --font-ui: "Chakra Petch", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "Space Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --pad: clamp(12px, 2.1vw, 26px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-ui);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overscroll-behavior: none;
}

#app { position: fixed; inset: 0; }

#scene {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

/* ---------- full-screen effects ---------- */
.fx { position: absolute; inset: 0; pointer-events: none; z-index: 5; }

.scanlines {
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.04) 0 1px,
    transparent 1px 3px
  );
  mix-blend-mode: overlay;
  opacity: 0.55;
}

.vignette {
  background: radial-gradient(
    125% 105% at 50% 44%,
    transparent 38%,
    rgba(0, 0, 0, 0.62) 100%
  );
}

/* ---------- HUD ---------- */
.hud {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--pad);
  padding-bottom: calc(var(--pad) + env(safe-area-inset-bottom, 0px));
}

.topbar, .bottombar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.topbar { align-items: flex-start; }

/* brand */
.brand { display: flex; align-items: center; gap: 12px; }

.logo {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-auto-rows: 1fr;
  gap: 1px;
  width: 46px;
  height: 46px;
  flex: none;
  filter: drop-shadow(0 0 6px color-mix(in srgb, var(--c-primary) 45%, transparent));
}
.logo i {
  display: block;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 1px;
  transition: background 0.25s ease;
}
.logo i.c-up    { background: var(--c-primary); }
.logo i.c-low   { background: color-mix(in srgb, var(--c-primary) 32%, transparent); }
.logo i.c-digit { background: var(--c-accent); }

.brand-text { line-height: 1.05; }
.wordmark {
  font-weight: 700;
  font-size: clamp(16px, 2.2vw, 21px);
  letter-spacing: 0.34em;
  margin-left: -0.02em;
}
.sub {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--c-dim);
  margin-top: 3px;
  text-transform: uppercase;
}
.slash { color: var(--c-accent); }
.dot { opacity: 0.5; }

/* stats */
.stats { display: flex; gap: clamp(14px, 3vw, 34px); text-align: right; }
.stat { display: flex; flex-direction: column; line-height: 1; }
.stat .k, .readout .k {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--c-dim);
  margin-bottom: 5px;
}
.stat .v {
  font-weight: 700;
  font-size: clamp(20px, 3.4vw, 30px);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 18px color-mix(in srgb, var(--c-primary) 55%, transparent);
}

/* readouts */
.readouts {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: clamp(14px, 2.6vw, 32px);
}
.readout { display: flex; flex-direction: column; line-height: 1; }
.readout .v {
  font-weight: 600;
  font-size: clamp(15px, 2vw, 20px);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}
.readout .v i { color: var(--c-dim); font-style: normal; font-size: 0.7em; }
.readout .v.bump { animation: bump 0.35s ease; }
.readout.seed { max-width: 34vw; }
.readout.seed .v {
  font-size: 10px;
  color: color-mix(in srgb, var(--c-ink) 70%, transparent);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
}
.mono { font-family: var(--font-mono); letter-spacing: 0.06em; }

/* lives pips */
.lives { display: flex; gap: 5px; align-items: center; height: 20px; }
.lives b {
  width: 11px;
  height: 11px;
  display: block;
  background: var(--c-primary);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  box-shadow: 0 0 10px var(--c-primary);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.lives b.off {
  background: transparent;
  border: 1px solid color-mix(in srgb, var(--c-dim) 70%, transparent);
  box-shadow: none;
  opacity: 0.5;
}
.lives b.lost { animation: pipLost 0.5s ease; }

@keyframes pipLost {
  0% { transform: scale(1.16); }
  100% { transform: scale(1); }
}

/* buttons */
.actions { display: flex; gap: 8px; pointer-events: auto; flex-wrap: wrap; justify-content: flex-end; }
.btn {
  appearance: none;
  border: 1px solid var(--c-line-hi);
  background: linear-gradient(180deg, rgba(20, 34, 46, 0.55), rgba(8, 14, 20, 0.55));
  color: color-mix(in srgb, var(--c-ink) 82%, transparent);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.18s ease;
  backdrop-filter: blur(4px);
}
.btn:hover {
  border-color: var(--c-primary);
  color: var(--c-ink);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--c-primary) 40%, transparent),
              0 0 20px -4px var(--c-primary);
}
.btn:active { transform: translateY(1px); }

/* ---------- overlays ---------- */
.overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: var(--pad);
  background: radial-gradient(circle at 50% 42%, rgba(12, 24, 34, 0.66), rgba(3, 6, 10, 0.93));
  backdrop-filter: blur(7px);
  transition: opacity 0.38s ease, visibility 0.38s ease;
}
.overlay.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.panel {
  width: min(640px, 94vw);
  max-height: 92vh;
  overflow: auto;
  border: 1px solid var(--c-line);
  border-radius: 14px;
  padding: clamp(22px, 4.2vw, 44px);
  text-align: center;
  background:
    linear-gradient(180deg, rgba(14, 24, 33, 0.82), rgba(6, 10, 15, 0.86));
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.03) inset,
    0 40px 90px -40px rgba(0, 0, 0, 0.95),
    0 0 60px -20px color-mix(in srgb, var(--c-primary) 40%, transparent);
  animation: panelIn 0.5s cubic-bezier(0.2, 0.9, 0.2, 1) both;
}

@keyframes panelIn {
  from { opacity: 0; transform: translateY(14px) scale(0.985); }
  to   { opacity: 1; transform: none; }
}

.logo-lg {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 2px;
  width: clamp(84px, 15vw, 116px);
  height: clamp(84px, 15vw, 116px);
  margin: 0 auto clamp(14px, 2.4vw, 22px);
  filter: drop-shadow(0 0 14px color-mix(in srgb, var(--c-primary) 55%, transparent));
}
.logo-lg i { display: block; background: rgba(255, 255, 255, 0.05); border-radius: 2px; }
.logo-lg i.c-up    { background: var(--c-primary); }
.logo-lg i.c-low   { background: color-mix(in srgb, var(--c-primary) 30%, transparent); }
.logo-lg i.c-digit { background: var(--c-accent); box-shadow: 0 0 12px var(--c-accent); }

.panel h1 {
  margin: 0;
  font-weight: 700;
  font-size: clamp(38px, 9vw, 74px);
  letter-spacing: 0.2em;
  margin-left: 0.2em;
  line-height: 0.98;
  text-shadow: 0 0 34px color-mix(in srgb, var(--c-primary) 55%, transparent);
}
.panel h1.sm { font-size: clamp(26px, 6vw, 46px); letter-spacing: 0.14em; }

.tag {
  font-family: var(--font-mono);
  font-size: clamp(9px, 1.5vw, 11px);
  letter-spacing: 0.36em;
  color: var(--c-accent);
  margin: 14px 0 0;
}
.lede {
  color: color-mix(in srgb, var(--c-ink) 74%, transparent);
  font-size: clamp(13px, 1.8vw, 15px);
  line-height: 1.65;
  margin: 20px auto 0;
  max-width: 46ch;
}

.keys {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin: 26px auto 0;
  padding: 16px 0;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  max-width: 400px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--c-dim);
}
.key { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.key b { color: var(--c-ink); font-weight: 700; letter-spacing: 0.14em; }
.key span { opacity: 0.6; }
.key span:first-of-type { color: var(--c-primary); opacity: 0.8; }

.cta {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: clamp(10px, 1.6vw, 12px);
  letter-spacing: 0.28em;
  color: var(--c-ink);
  animation: pulse 2.1s ease-in-out infinite;
}
.cta b { color: var(--c-accent); }

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; text-shadow: 0 0 18px color-mix(in srgb, var(--c-primary) 60%, transparent); }
}

.start-actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 22px;
}

.seedbox {
  margin-top: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--c-dim);
}
.seedbox code {
  color: color-mix(in srgb, var(--c-ink) 66%, transparent);
  word-break: break-all;
  max-width: 100%;
}

.over-mark {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--c-danger);
  margin-bottom: 12px;
  text-shadow: 0 0 20px color-mix(in srgb, var(--c-danger) 60%, transparent);
}

.final {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 5vw, 50px);
  margin-top: 28px;
}
.stat.big .v { font-size: clamp(26px, 5.5vw, 44px); }

/* banner */
.banner {
  position: absolute;
  z-index: 15;
  left: 50%;
  top: 38%;
  transform: translate(-50%, -50%) scale(0.96);
  pointer-events: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(16px, 3.6vw, 34px);
  letter-spacing: 0.3em;
  color: var(--c-ink);
  text-shadow: 0 0 30px color-mix(in srgb, var(--c-primary) 80%, transparent);
  opacity: 0;
  transition: opacity 0.28s ease, transform 0.28s ease;
  white-space: nowrap;
  text-align: center;
}
.banner.show { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.banner.accent { color: var(--c-accent); text-shadow: 0 0 30px color-mix(in srgb, var(--c-accent) 80%, transparent); }
.banner.danger { color: var(--c-danger); text-shadow: 0 0 30px color-mix(in srgb, var(--c-danger) 80%, transparent); }

/* toast */
.toast {
  position: absolute;
  z-index: 16;
  left: 50%;
  bottom: calc(var(--pad) + 64px);
  transform: translateX(-50%) translateY(8px);
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--c-ink);
  background: rgba(8, 14, 20, 0.72);
  border: 1px solid var(--c-line);
  padding: 8px 14px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* damage flash */
#app.hit::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 12;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, transparent 30%, color-mix(in srgb, var(--c-danger) 55%, transparent) 100%);
  animation: hitFlash 0.42s ease-out;
}
@keyframes hitFlash { from { opacity: 1; } to { opacity: 0; } }

@media (max-width: 680px) {
  .readout.seed { display: none; }
  .brand-text .sub { display: none; }
  .logo { width: 36px; height: 36px; }
  .keys { font-size: 9px; }
}