/* =====================================================================
   Flappy Bird — fixed bright "sunny arcade" theme.
   Like Super Plumber & Tunnel Flyer, this page deliberately ignores the
   center's light/dark mode and its shared glass chrome (no glass.css is
   loaded); every color is hardcoded, taken straight from the game's own
   canvas palette: teal sky, pipe green, sand ground, gold bird, ink
   outlines.
   ===================================================================== */
:root {
  --fl-sky:    #3ec3cc;   /* canvas sky teal */
  --fl-sky2:   #8fdde0;
  --fl-sky3:   #c9f0e8;
  --fl-pipe:   #2fb068;   /* pipe green */
  --fl-pipe2:  #27a15c;
  --fl-pipedk: #145c36;   /* deep pipe green for text accents */
  --fl-sand:   #ded895;   /* ground sand */
  --fl-sand2:  #c9ad54;
  --fl-gold:   #ffd83a;   /* the bird */
  --fl-ink:    #1c2233;   /* outline ink — main text color */
  --fl-line:   rgba(28, 34, 51, .8);
}

html, body { height: 100%; }
body.fl-page {
  margin: 0;
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  /* iOS: touch-action doesn't inherit — every directly-tapped element needs
     its own opt-out of double-tap zoom (see #screen / .fl-overlay below). */
  touch-action: manipulation;
  background: linear-gradient(180deg, var(--fl-sky) 0%, var(--fl-sky2) 55%, var(--fl-sky3) 100%);
  color: var(--fl-ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
body.fl-page *,
body.fl-page *::before,
body.fl-page *::after { box-sizing: border-box; }

/* ---------- App frame ---------- */
.c-app {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

/* ---------- Top bar ---------- */
.c-bar {
  flex: none;
  display: flex;
  align-items: center;
  gap: 10px 18px;
  flex-wrap: wrap;
  padding: 12px clamp(12px, 3vw, 28px);
  padding-top: max(12px, env(safe-area-inset-top));
  background: rgba(255, 255, 255, .38);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--fl-pipe);
  z-index: 20;
}
.c-bar__brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.c-bar__brand svg { filter: drop-shadow(0 2px 0 rgba(28, 34, 51, .18)); }
.c-bar__title {
  margin: 0;
  font-size: clamp(19px, 3.4vw, 26px);
  font-weight: 800;
  letter-spacing: .03em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--fl-ink);
  text-shadow: 2px 2px 0 rgba(255, 255, 255, .55);
}
.c-bar__stats { display: flex; align-items: center; gap: 8px 18px; margin-left: auto; }
.c-bar__controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.stat { font-size: 14px; font-weight: 700; letter-spacing: .03em; white-space: nowrap; color: rgba(28, 34, 51, .72); }
.stat b { color: var(--fl-pipedk); font-size: 16px; }

/* ---------- Buttons (chunky arcade style, mario-like) ---------- */
.c-btn {
  appearance: none;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .03em;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-block;
  padding: 9px 16px;
  border-radius: 12px;
  border: 2px solid var(--fl-line);
  background: #fff;
  color: var(--fl-ink);
  box-shadow: 0 3px 0 rgba(28, 34, 51, .35);
  transition: transform .06s ease, background .15s ease, box-shadow .15s ease;
}
.c-btn:hover { background: #eafff3; border-color: var(--fl-pipe); }
.c-btn:active { transform: translateY(2px); box-shadow: 0 1px 0 rgba(28, 34, 51, .35); }
.c-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(47, 176, 104, .5); }
.c-btn--primary {
  background: linear-gradient(140deg, var(--fl-pipe), var(--fl-pipe2));
  border-color: var(--fl-line);
  color: #fff;
  text-shadow: 1px 1px 0 rgba(0, 0, 0, .2);
}
.c-btn--primary:hover { background: linear-gradient(140deg, #38c476, var(--fl-pipe)); }

/* ---------- Table / stage ---------- */
.c-table {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(10px, 2.4vh, 22px);
}
.fl-stage {
  position: relative;
  /* 2:3 portrait; capped by viewport height minus the chrome, no fixed
     floor — small screens just get a smaller board (no horizontal scroll). */
  width: min(92vw, calc((100vh - 170px) * 0.6667), 420px);
  aspect-ratio: 2 / 3;
  border-radius: 14px;
  overflow: hidden;
  background: var(--fl-sky);
  border: 3px solid var(--fl-line);
  box-shadow: 0 10px 0 rgba(28, 34, 51, .22), 0 22px 48px rgba(28, 34, 51, .35);
  touch-action: manipulation;
  cursor: pointer;
}
#screen {
  display: block; width: 100%; height: 100%;
  /* The canvas is the real tap target while playing — Safari iOS does not
     reliably honour the stage's touch-action for gestures landing on a
     child, so fast flaps could still trigger page zoom. */
  touch-action: manipulation;
}

/* ---------- Ready / game-over overlays ---------- */
.fl-overlay {
  touch-action: manipulation;
  position: absolute; inset: 0; z-index: 5;
  display: flex; align-items: center; justify-content: center;
  padding: 18px;
  background: rgba(28, 34, 51, .28);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  touch-action: manipulation;    /* ready/over states are tapped too */
}
.fl-overlay[hidden] { display: none; }
.fl-card {
  touch-action: manipulation;
  max-width: 300px;
  text-align: center;
  padding: 22px 24px 20px;
  border-radius: 16px;
  background: linear-gradient(160deg, #f2ecc2, var(--fl-sand));
  border: 2px solid var(--fl-line);
  box-shadow: 0 8px 0 rgba(28, 34, 51, .25), 0 22px 50px rgba(28, 34, 51, .4);
  color: var(--fl-ink);
  animation: flPop .3s ease;
  touch-action: manipulation;    /* the card body is a tap surface too */
}
@keyframes flPop { from { transform: scale(.88); opacity: 0; } }
.fl-card__big { font-size: 40px; line-height: 1.1; }
.fl-card h2 {
  margin: 6px 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--fl-ink);
  text-shadow: 2px 2px 0 rgba(255, 255, 255, .5);
}
.fl-card p { margin: 0 0 14px; color: #5a5636; font-size: 13.5px; line-height: 1.55; }
.fl-card p b { color: var(--fl-pipedk); }
.fl-card .c-btn { font-size: 14px; }
.fl-card kbd, .c-modal kbd {
  display: inline-block;
  min-width: 18px;
  padding: 1px 6px;
  margin: 0 1px;
  font: 700 12px/1.5 ui-monospace, "Segoe UI", monospace;
  text-align: center;
  color: var(--fl-ink);
  background: #fff;
  border: 1px solid var(--fl-line);
  border-radius: 6px;
  box-shadow: 0 2px 0 rgba(28, 34, 51, .3);
}
.c-win__actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ---------- Rules modal ---------- */
.c-modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; }
.c-modal[hidden] { display: none; }
.c-modal__backdrop {
  position: absolute; inset: 0;
  background: rgba(28, 34, 51, .5);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.c-modal__panel {
  position: relative;
  width: min(92vw, 470px);
  max-height: 86vh;
  overflow: auto;
  background: linear-gradient(160deg, #2aa7b1, #177a84);
  color: #eafffb;
  border-radius: 16px;
  border: 2px solid rgba(255, 255, 255, .65);
  box-shadow: 0 8px 0 rgba(28, 34, 51, .3), 0 24px 60px rgba(28, 34, 51, .55);
}
.c-modal__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .3);
}
.c-modal__head h2 {
  margin: 0; font-size: 18px; font-weight: 800;
  text-transform: uppercase; letter-spacing: .04em;
  color: #fff; text-shadow: 2px 2px 0 rgba(0, 0, 0, .25);
}
.c-modal__x {
  appearance: none; border: 0; background: none;
  color: #eafffb; font-size: 26px; line-height: 1;
  cursor: pointer; padding: 0 4px;
}
.c-modal__x:hover { color: var(--fl-gold); }
.c-modal__body { padding: 8px 20px 4px; font-size: 14px; line-height: 1.55; }
.c-modal__body h3 {
  margin: 16px 0 6px; font-size: 13px;
  text-transform: uppercase; letter-spacing: .06em;
  color: var(--fl-gold);
}
.c-modal__body ul { margin: 0; padding-left: 20px; }
.c-modal__body li { margin: 4px 0; }
.c-modal__body b { color: var(--fl-gold); }
.c-modal__lead { margin: 12px 0; }
.c-modal__note {
  margin: 14px 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .35);
  font-size: 13px;
  color: #dff7f2;
}
.c-modal__foot { display: flex; justify-content: flex-end; padding: 12px 20px 16px; }
.c-modal .c-btn { border-color: rgba(255, 255, 255, .8); box-shadow: 0 3px 0 rgba(0, 0, 0, .3); }
.c-modal .c-btn--primary { border-color: var(--fl-line); }

/* ---------- Responsive ---------- */
/* Phones and short windows: tighten the bar's type and padding. The old rule
   pinned it to one row with flex-wrap: nowrap, which starved the control
   group — its buttons then wrapped into a tower taller than the header itself
   while the nowrap title spilled over the score readout. */
@media (max-width: 700px), (max-height: 560px) {
  .c-bar { gap: 5px 12px; padding: 7px clamp(10px, 3vw, 18px); padding-top: max(7px, env(safe-area-inset-top)); }
  .c-bar__brand { gap: 8px; }
  .c-bar__title { font-size: 16px; }
  .c-bar__stats { gap: 4px 12px; margin-left: auto; }
  .stat { font-size: 12px; }
  .stat b { font-size: 13px; }
  .c-btn { padding: 8px 10px; font-size: 12px; }
  .c-bar__controls { gap: 6px; }
  .c-bar__controls .c-btn { padding: 9px 10px; white-space: nowrap; }
}
/* Narrow screens only: the buttons drop to a row of their own and split it
   evenly into full-width thumb targets. A landscape phone still has the width
   for one compact row, so it keeps the shorter header. */
@media (max-width: 700px) {
  .c-bar__controls { flex: 1 1 100%; flex-wrap: nowrap; }
  .c-bar__controls .c-btn { flex: 1 1 auto; min-width: 0; padding: 9px 6px; overflow: hidden; text-overflow: ellipsis; }
}
/* Smallest phones: four buttons no longer fit side by side, and letting them
   wrap would double the header's height again — so the labels scale down with
   the viewport instead of stacking or clipping. */
@media (max-width: 380px) {
  .c-bar { gap: 5px 8px; }
  .c-bar__title { font-size: 15px; }
  .stat { font-size: 11px; }
  .stat b { font-size: 12px; }
  .c-bar__controls { gap: 4px; }
  .c-bar__controls .c-btn { font-size: clamp(10px, 3.2vw, 12px); padding: 9px 4px; letter-spacing: .01em; }
}

@media (prefers-reduced-motion: reduce) {
  .c-btn, .fl-card { transition: none; animation: none; }
}