/* ── Pixel Dash — design tokens ───────────────────────────── */
:root {
  --bg:          #0b1020;
  --bg-deep:     #070a14;
  --bg-card:     rgba(255,255,255,.045);
  --border:      rgba(255,255,255,.09);
  --border-hi:   rgba(255,255,255,.18);
  --text:        #eef2ff;
  --muted:       #93a0c4;
  --primary:     #dc2626;
  --primary-hi:  #f43f3f;
  --secondary:   #2563eb;
  --accent:      #22c55e;
  --gold:        #fbbf24;
  --violet:      #a855f7;
  --radius-sm:   8px;
  --radius:      14px;
  --radius-lg:   22px;
  --shadow:      0 10px 30px rgba(0,0,0,.45);
  --shadow-lg:   0 24px 60px rgba(0,0,0,.6);
  --font-pixel:  'Press Start 2P', ui-monospace, monospace;
  --font-body:   'VT323', ui-monospace, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  min-height: 100dvh;
  background:
    radial-gradient(ellipse 70% 55% at 50% -10%, rgba(220,38,38,.22), transparent 65%),
    radial-gradient(ellipse 60% 45% at 15% 5%, rgba(37,99,235,.20), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 20px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--primary); color: #fff; }

.scanlines {
  position: fixed; inset: 0; z-index: 60; pointer-events: none; opacity: .28;
  background: repeating-linear-gradient(to bottom, rgba(0,0,0,.28) 0 1px, transparent 1px 3px);
  mix-blend-mode: multiply;
}

.app { max-width: 1180px; margin: 0 auto; padding: 0 18px 60px; }

/* ── Top bar ──────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 12px 16px; margin: 0 -18px 22px;
  background: rgba(9,13,26,.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark {
  width: 38px; height: 38px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 0 0 2px rgba(0,0,0,.4), 0 0 22px rgba(220,38,38,.5);
  position: relative;
}
.brand__mark::after {
  content: ''; position: absolute; inset: 6px;
  background:
    linear-gradient(#fff, #fff) 0 0 / 100% 6px no-repeat,
    linear-gradient(#fff, #fff) 0 40% / 26% 34% no-repeat,
    linear-gradient(#fff, #fff) 100% 40% / 26% 34% no-repeat,
    linear-gradient(#fff, #fff) 0 100% / 100% 6px no-repeat;
  opacity: .85;
}
.brand h1 { font-family: var(--font-pixel); font-size: 15px; letter-spacing: .5px; line-height: 1.4; }
.brand p { font-size: 15px; color: var(--muted); letter-spacing: 2px; text-transform: uppercase; }

/* ── HUD ──────────────────────────────────────────────────── */
.hud { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
.hud__item { display: flex; flex-direction: column; gap: 2px; }
.hud__label { font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }
.hud__value { font-family: var(--font-pixel); font-size: 12px; color: #fff; text-shadow: 2px 2px 0 rgba(0,0,0,.6); }
.hud__value--coin { display: flex; align-items: center; gap: 6px; color: var(--gold); }
.pip-coin {
  width: 11px; height: 13px; border-radius: 3px; display: inline-block;
  background: linear-gradient(180deg, #fde68a, var(--gold) 55%, #b45309);
  box-shadow: inset 0 0 0 1.5px rgba(120,53,15,.75);
}
.hud__item--lives .hud__value { color: var(--primary-hi); }

.topbar__actions { display: flex; gap: 8px; }
.icon-btn {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  padding: 9px 12px; border-radius: 10px; color: var(--text);
  background: rgba(255,255,255,.05); border: 1px solid var(--border);
  font-family: var(--font-pixel); font-size: 9px; letter-spacing: .5px;
  transition: transform .15s ease, background .2s ease, border-color .2s ease, opacity .2s;
}
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn:hover { background: rgba(255,255,255,.11); border-color: var(--border-hi); transform: translateY(-2px); }
.icon-btn:active { transform: translateY(0); }
.icon-btn.is-off { opacity: .45; }

/* ── Stage / canvas ───────────────────────────────────────── */
.stage { position: relative; }
.stage__frame {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 10px;
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border: 1px solid var(--border-hi);
  box-shadow: var(--shadow-lg), 0 0 90px rgba(37,99,235,.16);
}
#game {
  display: block; width: 100%; height: auto; aspect-ratio: 2 / 1;
  border-radius: var(--radius); background: #5c94fc;
  image-rendering: pixelated; image-rendering: crisp-edges;
  touch-action: none;
}

/* ── Overlay + panels ─────────────────────────────────────── */
.overlay {
  position: absolute; inset: 10px; border-radius: var(--radius);
  display: grid; place-items: center; padding: 20px;
  background: radial-gradient(ellipse at 50% 30%, rgba(11,16,32,.82), rgba(4,6,14,.94));
  backdrop-filter: blur(6px); z-index: 5; overflow: auto;
  transition: opacity .2s ease;
}
.overlay[data-screen="none"] { display: none; }

.panel { display: none; flex-direction: column; align-items: center; gap: 14px; max-width: 620px; text-align: center; animation: pop .28s ease both; }
.overlay[data-screen="start"]    [data-panel="start"],
.overlay[data-screen="pause"]    [data-panel="pause"],
.overlay[data-screen="gameover"] [data-panel="gameover"],
.overlay[data-screen="clear"]    [data-panel="clear"],
.overlay[data-screen="win"]      [data-panel="win"] { display: flex; }

.panel__eyebrow { font-size: 15px; letter-spacing: 3px; text-transform: uppercase; color: var(--accent); }
.panel__title {
  font-family: var(--font-pixel); font-size: clamp(20px, 4.4vw, 40px); line-height: 1.25;
  text-shadow: 3px 3px 0 var(--primary), 6px 6px 0 rgba(0,0,0,.45);
  letter-spacing: 1px;
}
.panel__title--sm { font-size: clamp(18px, 3.4vw, 30px); }
.panel__lead { font-size: 21px; color: #d5dcf5; max-width: 52ch; }
.panel__note { font-size: 17px; color: var(--muted); letter-spacing: 1px; }
.panel__note strong { font-family: var(--font-pixel); font-size: 11px; color: var(--gold); }
.panel__row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 12px 22px; border: none; border-radius: 12px; cursor: pointer;
  font-family: var(--font-pixel); font-size: 11px; letter-spacing: .5px; color: #fff;
  transition: transform .15s ease, box-shadow .15s ease, background .2s ease;
}
.btn svg { width: 17px; height: 17px; }
.btn--primary { background: linear-gradient(180deg, var(--primary-hi), var(--primary)); box-shadow: 0 6px 0 #7f1010, 0 12px 26px rgba(220,38,38,.35); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 8px 0 #7f1010, 0 16px 34px rgba(220,38,38,.45); }
.btn--primary:active { transform: translateY(3px); box-shadow: 0 3px 0 #7f1010; }
.btn--ghost { background: rgba(255,255,255,.06); border: 1px solid var(--border-hi); box-shadow: 0 6px 0 rgba(0,0,0,.35); }
.btn--ghost:hover { background: rgba(255,255,255,.13); transform: translateY(-2px); }
.btn--lg { padding: 15px 30px; font-size: 13px; }
.btn:focus-visible, .icon-btn:focus-visible, .touch__btn:focus-visible { outline: 3px solid var(--violet); outline-offset: 3px; }

/* ── Stats block ──────────────────────────────────────────── */
.stats { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.stats__item {
  display: flex; flex-direction: column; gap: 4px; min-width: 118px; padding: 10px 16px;
  background: rgba(255,255,255,.05); border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.stats__item span { font-size: 14px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }
.stats__item strong { font-family: var(--font-pixel); font-size: 11px; color: var(--gold); }

/* ── Key hints ────────────────────────────────────────────── */
.keys { display: flex; flex-direction: column; gap: 7px; margin-top: 4px; }
.keys__row { display: flex; align-items: center; gap: 7px; justify-content: center; font-size: 17px; color: var(--muted); }
.keys__row em { font-style: normal; margin-left: 4px; }
.key {
  font-family: var(--font-pixel); font-size: 9px; color: #fff; padding: 6px 8px;
  background: rgba(255,255,255,.08); border: 1px solid var(--border-hi);
  border-radius: 6px; box-shadow: 0 2px 0 rgba(0,0,0,.5);
}

/* ── Touch controls ───────────────────────────────────────── */
.touch { position: absolute; inset: auto 0 0 0; display: none; justify-content: space-between; padding: 12px; z-index: 6; pointer-events: none; }
.touch > * { pointer-events: auto; }
.touch__pad { display: flex; gap: 10px; }
.touch__btn {
  width: 66px; height: 66px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(11,16,32,.55); border: 2px solid var(--border-hi); color: #fff;
  backdrop-filter: blur(6px); cursor: pointer; touch-action: none;
}
.touch__btn svg { width: 26px; height: 26px; }
.touch__btn--jump { background: rgba(220,38,38,.55); border-color: rgba(255,255,255,.35); }
.touch__btn.is-down { transform: scale(.92); background: rgba(255,255,255,.25); }
body.touch-mode .touch { display: flex; }

/* ── How to play ──────────────────────────────────────────── */
.howto { margin-top: 46px; }
.howto__title {
  font-family: var(--font-pixel); font-size: clamp(14px, 2.4vw, 20px); letter-spacing: 1px;
  margin-bottom: 14px; text-shadow: 2px 2px 0 rgba(0,0,0,.5);
}
.howto__lead { font-size: 21px; color: #ccd5f2; max-width: 78ch; margin-bottom: 24px; }
.howto__foot { display: flex; align-items: center; gap: 10px; margin-top: 22px; font-size: 19px; color: var(--muted); }
.howto__foot svg { width: 20px; height: 20px; color: var(--violet); flex: none; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.card {
  position: relative; padding: 22px 20px; border-radius: var(--radius);
  background: var(--bg-card); border: 1px solid var(--border);
  backdrop-filter: blur(10px); box-shadow: var(--shadow);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  animation: fadeUp .5s ease both;
}
.card::before {
  content: ''; position: absolute; inset: 0 0 auto 0; height: 3px; border-radius: var(--radius) var(--radius) 0 0;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  opacity: .8;
}
.card:hover { transform: translateY(-4px); border-color: var(--border-hi); box-shadow: var(--shadow-lg); }
.card svg { width: 26px; height: 26px; color: var(--accent); margin-bottom: 12px; }
.card h3 { font-family: var(--font-pixel); font-size: 11px; letter-spacing: .5px; line-height: 1.6; margin-bottom: 9px; }
.card p { font-size: 19px; color: var(--muted); }
.card:nth-child(2) svg { color: var(--secondary); }
.card:nth-child(3) svg { color: var(--primary-hi); }
.card:nth-child(4) svg { color: var(--gold); }
.card:nth-child(5) svg { color: var(--violet); }
.card:nth-child(2) { animation-delay: .06s; }
.card:nth-child(3) { animation-delay: .12s; }
.card:nth-child(4) { animation-delay: .18s; }
.card:nth-child(5) { animation-delay: .24s; }
.card:nth-child(6) { animation-delay: .3s; }

/* ── Footer ───────────────────────────────────────────────── */
.foot { margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--border); color: var(--muted); font-size: 18px; }
.foot__small { font-size: 16px; margin-top: 6px; opacity: .8; }
.foot strong { color: var(--text); font-family: var(--font-pixel); font-size: 10px; }

/* ── Motion ───────────────────────────────────────────────── */
@keyframes pop { from { opacity: 0; transform: scale(.94) } to { opacity: 1; transform: none } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px) } to { opacity: 1; transform: none } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
  .brand__text p { display: none; }
  .hud { gap: 14px; margin-left: 0; width: 100%; justify-content: space-between; }
  .topbar__actions { margin-left: auto; }
  .icon-btn span { display: none; }
  .icon-btn { padding: 10px; }
}

@media (max-width: 620px) {
  body { font-size: 18px; }
  .app { padding: 0 10px 44px; }
  .topbar { margin: 0 -10px 16px; padding: 10px; gap: 10px; }
  .brand h1 { font-size: 12px; }
  .brand__mark { width: 30px; height: 30px; }
  .stage__frame { padding: 6px; border-radius: 16px; }
  .overlay { inset: 6px; padding: 12px; }
  .panel__lead { font-size: 18px; }
  .panel__row { flex-direction: column; width: 100%; }
  .panel__row .btn { width: 100%; }
  .stats__item { min-width: 92px; padding: 8px 12px; }
  .touch__btn { width: 58px; height: 58px; }
  .howto__lead { font-size: 18px; }
  .card p { font-size: 17px; }
}

@media (max-width: 900px) and (orientation: landscape) {
  .overlay { align-items: center; }
  .panel__title { font-size: 22px; }
  .panel__lead { display: none; }
  .keys { display: none; }
}