/* ===========================================================
   PLAYGROUND · Snake & Pong
   Editorial dark, coherent with portfolio
   =========================================================== */

:root {
  --ink: #0d0c0a;
  --ink-2: #161410;
  --cream: #efe9dc;
  --cream-dim: #cfc8b9;
  --muted: #857f73;
  --line: rgba(239, 233, 220, 0.10);
  --line-strong: rgba(239, 233, 220, 0.18);
  --accent: #ff5e2b;
  --pad-x: clamp(1rem, 4vw, 3rem);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ink);
  color: var(--cream);
  font-family: 'Manrope', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100dvh;
}

body {
  display: flex;
  flex-direction: column;
  touch-action: manipulation;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--accent); color: var(--ink); }

.font-display { font-family: 'Instrument Serif', serif; font-weight: 400; }
.font-mono    { font-family: 'JetBrains Mono', monospace; }
.dim          { color: var(--muted); }

/* ============== GRAIN ============== */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='200' height='200' filter='url(%23n)' opacity='1'/></svg>");
}

/* ============== NAV ============== */
.play-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem var(--pad-x);
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.play-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  transition: color 0.3s, gap 0.3s;
}
.play-back:hover { color: var(--cream); gap: 0.75rem; }
.back-arrow { font-size: 14px; }

.play-nav-mark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  justify-self: center;
}
.play-nav-mark .font-display { font-size: 1.1rem; line-height: 1; letter-spacing: -0.01em; }
.play-nav-mark .font-mono    { color: var(--muted); font-size: 9px; letter-spacing: 0.3em; }

.play-nav-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  justify-self: end;
  color: var(--cream);
  font-size: 11px;
  letter-spacing: 0.25em;
}
.status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  animation: pulse 2.5s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255,94,43,0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(255,94,43,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,94,43,0); }
}

@media (max-width: 720px) {
  .play-nav { grid-template-columns: auto 1fr; gap: 0.5rem; }
  .play-nav-mark { display: none; }
  .play-back { font-size: 9px; letter-spacing: 0.15em; }
  .back-text { display: none; }
  .play-nav-meta { font-size: 9px; letter-spacing: 0.15em; }
}

/* ============== MAIN ============== */
.play-main {
  flex: 1;
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) var(--pad-x);
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.play-head {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.play-eyebrow {
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
}

.play-title {
  font-size: clamp(3rem, 9vw, 6.5rem);
  line-height: 0.95;
  letter-spacing: -0.025em;
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: clamp(0.5rem, 2vw, 1.25rem);
  flex-wrap: wrap;
}
.play-title em {
  font-style: italic;
  color: var(--accent);
}

.play-sub {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--cream-dim);
  max-width: 60ch;
  margin: 0;
}

/* ============== TABS ============== */
.game-tabs {
  display: flex;
  gap: 0.75rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0;
}

.tab {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.85rem 1.25rem 0.85rem 1rem;
  border: 1px solid var(--line);
  border-bottom: 0;
  border-radius: 6px 6px 0 0;
  background: transparent;
  color: var(--muted);
  position: relative;
  top: 1px;
  transition: color 0.3s, background 0.3s, border-color 0.3s;
}
.tab:hover { color: var(--cream-dim); }
.tab.is-active {
  color: var(--cream);
  background: var(--ink-2);
  border-color: var(--line-strong);
}
.tab.is-active::after {
  content: '';
  position: absolute;
  inset: auto 0 -1px 0;
  height: 1px;
  background: var(--ink-2);
}
.tab-num {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--accent);
}
.tab-name {
  font-size: 1.5rem;
  letter-spacing: -0.015em;
  font-style: italic;
}
.tab-desc {
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  align-self: center;
  transition: color 0.3s;
}
.tab.is-active .tab-desc { color: var(--cream-dim); }
@media (max-width: 720px) {
  .game-tabs { gap: 0.3rem; }
  .tab {
    flex: 1 1 0;
    min-width: 0;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.55rem 0.35rem 0.6rem;
    border-radius: 6px 6px 0 0;
  }
  .tab-num { font-size: 8px; letter-spacing: 0.15em; line-height: 1; }
  .tab-name { font-size: 1rem; line-height: 1.1; white-space: nowrap; }
  .tab-desc { display: none; }
}

/* ============== HUD ============== */
.game-stage {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-strong);
  background: var(--ink-2);
  border-radius: 8px;
  overflow: hidden;
}

.game-hud {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-bottom: 1px solid var(--line);
}

.hud-cell {
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  border-right: 1px solid var(--line);
}
.hud-cell:last-child { border-right: 0; }

.hud-mid { align-items: center; }
.hud-end { align-items: flex-end; }

.hud-label {
  font-size: 9px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
}

.hud-value {
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

/* ============== CANVAS FRAME ============== */
.game-frame {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,94,43,0.04), transparent 60%),
    var(--ink);
  padding: clamp(0.5rem, 2vw, 1.5rem);
  min-height: 320px;
}

#game {
  display: block;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 4px;
  max-width: 100%;
  max-height: 70vh;
  touch-action: none;
}

/* ============== OVERLAY ============== */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 12, 10, 0.78);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 10;
  transition: opacity 0.4s ease;
}
.overlay.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.overlay-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
  padding: 1.5rem;
  max-width: 90%;
}

.overlay-tag {
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
}

.overlay-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1;
  font-style: italic;
  letter-spacing: -0.02em;
  margin: 0;
}

.overlay-msg {
  font-size: 0.9rem;
  color: var(--cream-dim);
  margin: 0;
}

.overlay-btn {
  margin-top: 0.5rem;
  padding: 0.85rem 1.75rem;
  background: var(--accent);
  color: var(--ink);
  border-radius: 100px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-weight: 500;
  transition: transform 0.3s, background 0.3s;
}
.overlay-btn:hover {
  background: var(--cream);
  transform: translateY(-2px);
}
.overlay-btn:active { transform: translateY(0); }

/* ============== CONTROLS ============== */
.game-controls {
  border-top: 1px solid var(--line);
  padding: 0.85rem 1rem;
  font-size: 11px;
  background: rgba(13,12,10,0.4);
}

.controls-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 10px;
  color: var(--cream-dim);
}

.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.6rem;
  height: 1.6rem;
  padding: 0 0.4rem;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--ink);
  color: var(--cream);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0;
  text-transform: none;
}

.ctrl-sep { color: var(--muted); margin: 0 0.25rem; }

@media (max-width: 720px) {
  .controls-row { font-size: 9px; gap: 0.4rem; }
  .ctrl-sep { display: none; }
}

/* ============== FOOTER ============== */
.play-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem var(--pad-x);
  border-top: 1px solid var(--line);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
}
.foot-link { transition: color 0.3s; }
.foot-link:hover { color: var(--cream); }

@media (max-width: 720px) {
  .play-foot { flex-direction: column; gap: 0.5rem; align-items: flex-start; font-size: 9px; }
}

/* hide cursor custom on touch */
@media (hover: none), (pointer: coarse), (max-width: 880px) {
  body { cursor: auto; }
}