/* ============================================================
   NOSTALGIA.EXE — Shared Arcade Chrome
   Common CSS variables + chrome used by all games in the hub.
   Game-specific colors (--brick-*, --ball, --paddle, etc.) are
   defined inside each game's own <style> block so they can
   diverge without touching shared code.
   ============================================================ */

:root {
  --bg:            #0a0a10;
  --bg-alt:        #111119;
  --panel:         #14141e;
  --panel-2:       #1b1b27;
  --border:        #2a2a3a;
  --text:          #e6e6f0;
  --text-dim:      #8a8aa0;
  --accent:        #4ea5ff;
  --accent-2:      #00e5ff;
  --accent-3:      #b388ff;
  --accent-hot:    #ff4fa1;
  --shadow-off:    #00e5ff;
  --scan-opacity:  0.1;
  --grid-line:     rgba(78, 165, 255, 0.06);
}

[data-theme="light"] {
  --bg:            #f2ecd8;
  --bg-alt:        #e7dfc4;
  --panel:         #fffaee;
  --panel-2:       #f7eeda;
  --border:        #2a2a3a;
  --text:          #1a1a28;
  --text-dim:      #5a5a6a;
  --accent:        #ff7aa8;
  --accent-2:      #4ab8c8;
  --accent-3:      #b8a5e8;
  --accent-hot:    #ff9f6b;
  --shadow-off:    #1a1a28;
  --scan-opacity:  0.03;
  --grid-line:     rgba(26, 26, 40, 0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg);
  color: var(--text);
  transition: background 0.4s, color 0.4s;
  position: relative;
}

/* ---------- Global overlays ---------- */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at center, black 50%, transparent 95%);
}
.scanlines {
  position: fixed; inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0,0,0,var(--scan-opacity)) 0 1px,
    transparent 1px 3px
  );
  pointer-events: none;
  z-index: 500;
  mix-blend-mode: overlay;
}
[data-theme="light"] .scanlines { mix-blend-mode: multiply; }

/* ---------- Top bar ---------- */
.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 10px 16px;
  display: flex; justify-content: space-between; align-items: center;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.back {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none;
  font-size: 12px;
  letter-spacing: 1px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  transition: all 0.2s;
  text-transform: uppercase;
}
.back:hover {
  border-color: var(--accent-2);
  color: var(--accent-2);
  box-shadow: 3px 3px 0 var(--shadow-off);
  transform: translate(-1px,-1px);
}

.title-tag {
  font-family: 'Press Start 2P', monospace;
  font-size: 12px;
  color: var(--accent-2);
  letter-spacing: 2px;
}
.title-tag .ver { color: var(--text-dim); font-size: 10px; margin-left: 10px; }

.theme-toggle {
  width: 60px; height: 26px;
  border: 1px solid var(--border);
  background: var(--panel);
  position: relative;
  cursor: pointer;
  padding: 0;
}
.theme-toggle::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 20px; height: 20px;
  background: var(--accent-2);
  transition: transform 0.3s cubic-bezier(0.68,-0.55,0.27,1.55);
  box-shadow: 2px 2px 0 var(--shadow-off);
}
[data-theme="light"] .theme-toggle::after { transform: translateX(34px); }

/* ---------- HUD ---------- */
.hud {
  position: fixed;
  top: 48px;
  left: 0; right: 0;
  padding: 8px 16px;
  z-index: 60;
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px;
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 1px;
}
.hud-col { display: flex; gap: 16px; align-items: center; }
.hud-stat strong {
  display: block;
  font-family: 'Press Start 2P', monospace;
  font-size: 12px;
  color: var(--text);
  margin-top: 3px;
  letter-spacing: 1px;
}
.hud-stat.score strong { color: var(--accent-2); }
.hud-stat.best  strong { color: var(--accent-3); }
.hud-stat.lives strong { color: var(--accent-hot); letter-spacing: 2px; }

.powerup-stack { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; }
.pu-badge {
  min-width: 28px; height: 28px; padding: 0 6px;
  border: 1px solid var(--text);
  background: var(--panel);
  display: grid; place-items: center;
  font-family: 'Press Start 2P', monospace;
  font-size: 9px;
  color: var(--accent-2);
}
.pu-badge.active {
  background: var(--accent-2);
  color: var(--bg);
  box-shadow: 2px 2px 0 var(--text);
}
.pu-badge .lv { font-size: 7px; color: var(--text-dim); margin-left: 4px; }
.pu-badge.active .lv { color: var(--bg); }

/* ---------- Stage / canvas ---------- */
.stage {
  position: fixed;
  top: 108px;
  bottom: 48px;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  padding: 8px;
}
canvas {
  display: block;
  background: var(--bg-alt);
  border: 2px solid var(--text);
  box-shadow:
    6px 6px 0 var(--text),
    inset 0 0 40px color-mix(in srgb, var(--accent-2) 6%, transparent);
  image-rendering: pixelated;
  touch-action: none;
}

/* ---------- Bottom bar ---------- */
.bottombar {
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 60;
  padding: 8px 16px;
  display: flex; justify-content: space-between; align-items: center;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 1px;
  min-height: 40px;
}
.keys { display: flex; gap: 14px; flex-wrap: wrap; }
kbd {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--text);
  background: var(--panel);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  margin-right: 4px;
  box-shadow: 2px 2px 0 var(--text);
}

/* ---------- Overlays / cards ---------- */
.overlay {
  position: fixed; inset: 108px 0 48px 0;
  display: grid; place-items: center;
  z-index: 200;
  padding: 20px;
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  backdrop-filter: blur(4px);
  overflow: auto;
}
.overlay.hidden { display: none; }
.card {
  background: var(--panel);
  border: 2px solid var(--text);
  box-shadow: 8px 8px 0 var(--accent-2);
  padding: 32px;
  max-width: 520px;
  width: 100%;
  text-align: center;
  position: relative;
}
.card.wide { max-width: 920px; }
.card-head {
  display: flex; justify-content: space-between; align-items: center;
  margin: -32px -32px 24px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--text);
  background: var(--panel-2);
  font-size: 10px;
  color: var(--text-dim);
}
.dots { display: flex; gap: 5px; }
.dots span { width: 10px; height: 10px; border: 1px solid var(--text); }
.dots span:nth-child(1) { background: var(--accent-hot); }
.dots span:nth-child(2) { background: var(--accent-2); }
.dots span:nth-child(3) { background: var(--accent-3); }

.card h1 {
  font-family: 'Press Start 2P', monospace;
  font-size: 28px;
  letter-spacing: -1px;
  margin-bottom: 10px;
  color: var(--accent-2);
  text-shadow: 0 0 18px color-mix(in srgb, var(--accent-2) 60%, transparent);
}
.card h2 {
  font-family: 'Press Start 2P', monospace;
  font-size: 20px;
  margin-bottom: 16px;
}
.card p {
  color: var(--text-dim);
  margin-bottom: 20px;
  font-size: 13px;
  line-height: 1.6;
}
.card .stat-row {
  display: flex; justify-content: space-around;
  margin: 20px 0;
  padding: 14px;
  border: 1px dashed var(--border);
}
.card .stat-row div { font-size: 10px; color: var(--text-dim); letter-spacing: 1px; }
.card .stat-row strong {
  display: block;
  font-family: 'Press Start 2P', monospace;
  font-size: 18px;
  color: var(--accent-2);
  margin-top: 6px;
}
/* Status line used by shared/scores.js to report public-scoreboard
   submission state ("Posting…", "Posted", "Sign in to post", …).
   The module sets the color per state; this rule handles layout only. */
.card .score-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.5px;
  min-height: 1.3em;
  margin: 6px 0 10px;
  opacity: 0.95;
}
.card .score-status[data-state="loading"]::after {
  content: ' █';
  animation: score-status-blink 0.9s steps(2, end) infinite;
}
@keyframes score-status-blink { 50% { opacity: 0; } }

/* ---------- Buttons ---------- */
.btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 14px 22px;
  border: 2px solid var(--text);
  background: var(--accent-2);
  color: var(--bg);
  cursor: pointer;
  box-shadow: 5px 5px 0 var(--text);
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 10px;
  transition: transform 0.15s, box-shadow 0.15s;
  margin: 4px;
}
.btn:hover { transform: translate(-2px,-2px); box-shadow: 7px 7px 0 var(--text); }
.btn:active { transform: translate(2px,2px); box-shadow: 2px 2px 0 var(--text); }
.btn.ghost { background: transparent; color: var(--text); box-shadow: 5px 5px 0 var(--border); }
.btn.ghost:hover { box-shadow: 7px 7px 0 var(--border); }

/* ---------- Touch controls ---------- */
.touch {
  position: fixed;
  bottom: 48px; left: 0; right: 0;
  z-index: 80;
  display: none;
  justify-content: space-between;
  padding: 16px;
  pointer-events: none;
}
.touch button {
  pointer-events: auto;
  width: 76px; height: 76px;
  border: 2px solid var(--text);
  background: color-mix(in srgb, var(--panel) 80%, transparent);
  color: var(--accent-2);
  font-family: 'Press Start 2P', monospace;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--text);
}
.touch .right-cluster { display: flex; gap: 10px; }

.blink { animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

::selection { background: var(--accent-2); color: var(--bg); }

/* ---------- Mobile / touch layout ---------- */
/* Three-tier scale-down for game pages.
     780  large phone landscape / small tablet
     480  iPhone-class portrait
     380  compact / older phones                                          */
@media (max-width: 780px) {
  .hud { font-size: 9px; padding: 6px 10px; }
  .hud-stat strong { font-size: 10px; }
  .keys { display: none; }
  .card h1 { font-size: 20px; }
  .card h2 { font-size: 16px; }
  .touch { display: flex; }
  .stage { bottom: 140px; }
  .overlay { inset: 98px 0 140px 0; }
}

@media (max-width: 480px) {
  /* Top bar: shorter back-button label, smaller version tag, less padding. */
  .topbar { padding: 8px 12px; }
  .back { font-size: 11px; padding: 6px 10px; letter-spacing: 0.5px; }
  .title-tag { font-size: 10px; letter-spacing: 1px; }
  .title-tag .ver { font-size: 8px; margin-left: 6px; }
  .theme-toggle { width: 50px; height: 24px; }
  .theme-toggle::after { width: 18px; height: 18px; }
  [data-theme="light"] .theme-toggle::after { transform: translateX(28px); }

  /* HUD: shrink the stat blocks, reduce gap, allow wrap if needed. */
  .hud { padding: 5px 10px; gap: 8px; }
  .hud-col { gap: 10px; }
  .hud-stat strong { font-size: 9px; }
  .pu-badge { min-width: 22px; height: 22px; font-size: 8px; padding: 0 4px; }
  .pu-badge .lv { font-size: 6px; margin-left: 2px; }

  /* Game-over / pause card: narrower padding so all the buttons +
     stat row fit at 360px without horizontal pinch. */
  .card { padding: 22px 18px; }
  .card-head { margin: -22px -18px 18px; padding: 8px 12px; font-size: 9px; }
  .card h1 { font-size: 18px; margin-bottom: 8px; }
  .card h2 { font-size: 14px; margin-bottom: 12px; }
  .card p { font-size: 12px; margin-bottom: 16px; }
  .card .stat-row { padding: 10px; gap: 8px; }
  .card .stat-row strong { font-size: 14px; }
  .card .score-status { font-size: 10px; }
  .btn { font-size: 11px; padding: 11px 16px; letter-spacing: 1px; box-shadow: 4px 4px 0 var(--text); margin: 3px; }
  .btn:hover { box-shadow: 6px 6px 0 var(--text); }

  /* Touch buttons — slightly smaller so they don't dominate the
     bottom of the screen, but still hit-target ≥ 44px. */
  .touch { padding: 12px; bottom: 44px; }
  .touch button { width: 64px; height: 64px; font-size: 18px; box-shadow: 3px 3px 0 var(--text); }
  .touch .right-cluster { gap: 8px; }
  .stage { bottom: 124px; padding: 4px; }
  .overlay { inset: 92px 0 124px 0; padding: 14px; }

  /* Bottom bar — tighter so it doesn't crowd the touch buttons. */
  .bottombar { padding: 6px 10px; min-height: 36px; font-size: 9px; }
}

@media (max-width: 380px) {
  /* Older / compact phones: hide the version tag in the topbar so the
     game title doesn't fight the back button for space. */
  .title-tag .ver { display: none; }
  .back { letter-spacing: 0; }
  .card { padding: 18px 14px; }
  .card-head { margin: -18px -14px 14px; }
  .touch button { width: 56px; height: 56px; font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}