* { box-sizing: border-box; }

:root {
  --bg: #0e1116;
  --card-bg: rgba(20, 24, 32, 0.92);
  --accent: #ffd23f;
  --text: #f4f4f4;
  font-family: "Vazirmatn", "Tahoma", "Segoe UI", sans-serif;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  --reserved: 0px; /* vertical space taken by things other than the canvas */
  --vpad: calc(env(safe-area-inset-top, 0px) + env(safe-area-inset-bottom, 0px));
}

/* fixed to the viewport (not 100% height) so mobile browser toolbars
   showing/hiding can never push the game off-screen */
#game-wrap {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px)
           env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
}

/* The canvas is limited by BOTH width and height, so it always fits fully
   on screen (the old version got cropped on landscape phones).
   vh first as a fallback for browsers without dvh. */
#canvas-stage {
  position: relative;
  width: min(100%, 1100px, calc((100vh - var(--vpad) - var(--reserved)) * 2.2));
  width: min(100%, 1100px, calc((100dvh - var(--vpad) - var(--reserved)) * 2.2));
  aspect-ratio: 1100 / 500;
  margin: 0 auto;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
  background: #ffffff;
}

body.is-fullscreen #canvas-stage { border-radius: 0; box-shadow: none; }

canvas#game {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: pointer;
}

/* ---- start / audio-unlock overlay ---- */
#start-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 12, 16, 0.78);
  backdrop-filter: blur(2px);
  z-index: 20;
  cursor: pointer;
  transition: opacity 0.25s ease;
}
#start-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}
#start-card {
  text-align: center;
  color: var(--text);
  padding: 24px 34px;
  background: var(--card-bg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
}
#start-title {
  font-size: clamp(20px, 4vw, 32px);
  font-weight: 800;
  margin-bottom: 8px;
}
#start-sub {
  font-size: clamp(13px, 2.4vw, 16px);
  opacity: 0.85;
  margin-bottom: 14px;
}
#start-spinner {
  width: 26px;
  height: 26px;
  margin: 0 auto;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.25);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
  display: none;
}
#start-overlay.loading #start-spinner { display: block; }
#start-overlay.loading #start-sub { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- fullscreen button (top corner) ---- */
#btn-fullscreen {
  position: fixed;
  top: max(8px, env(safe-area-inset-top, 0px));
  left: max(8px, env(safe-area-inset-left, 0px));
  z-index: 40;
  width: 40px;
  height: 40px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: rgba(20, 24, 32, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 10px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s ease;
}
#btn-fullscreen[hidden] { display: none; }
#btn-fullscreen:hover { background: rgba(20, 24, 32, 0.8); }
#btn-fullscreen:active { background: rgba(255, 255, 255, 0.3); }
#btn-fullscreen .ico-exit { display: none; }
body.is-fullscreen #btn-fullscreen .ico-enter { display: none; }
body.is-fullscreen #btn-fullscreen .ico-exit { display: block; }

/* ---- portrait hint (phones only) ---- */
#rotate-hint {
  display: none;
  position: fixed;
  top: max(8px, env(safe-area-inset-top, 0px));
  left: 60px;
  right: 12px;
  height: 40px;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: rgba(255, 255, 255, 0.75);
  font-size: 13px;
  pointer-events: none;
}

/* ---- mobile touch controls ---- */
#touch-controls {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  justify-content: space-between;
  gap: 14px;
  padding: 12px max(14px, env(safe-area-inset-right, 0px))
           calc(12px + env(safe-area-inset-bottom, 0px))
           max(14px, env(safe-area-inset-left, 0px));
  pointer-events: none; /* only the buttons themselves catch touches */
}
body.show-controls #touch-controls { display: flex; }

.touch-btn {
  pointer-events: auto;
  flex: 1;
  max-width: 260px;
  height: 88px;
  padding: 0 10px;
  font-family: inherit;
  font-size: clamp(16px, 4.4vw, 22px);
  font-weight: 700;
  color: var(--text);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 16px;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}
.touch-btn:active { background: rgba(255, 255, 255, 0.28); }
.touch-btn-primary {
  background: rgba(255, 210, 63, 0.92);
  color: #201a02;
  border-color: rgba(255, 210, 63, 1);
}
.touch-btn-primary:active { background: #ffd23f; }

/* ---------- phone / touch layout (body.is-mobile is set by game.js) ---------- */

/* Portrait: fullscreen button + hint live in a top bar, the game sits under
   it, big buttons sit at the bottom where thumbs are. */
@media (orientation: portrait) {
  body.is-mobile #game-wrap {
    justify-content: flex-start;
    padding-top: calc(env(safe-area-inset-top, 0px) + 56px);
  }
  body.is-mobile #rotate-hint { display: flex; }
}

/* Landscape: the game takes the whole screen and the buttons float over the
   empty ground area at the bottom corners (duck = left, jump = right). */
@media (orientation: landscape) {
  body.is-mobile .touch-btn {
    flex: 0 0 auto;
    width: clamp(110px, 18vw, 170px);
    height: 62px;
    font-size: 18px;
    background: rgba(0, 0, 0, 0.38);
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
  }
  body.is-mobile .touch-btn:active { background: rgba(255, 255, 255, 0.35); }
  body.is-mobile .touch-btn-primary {
    background: rgba(255, 210, 63, 0.85);
    border-color: rgba(255, 210, 63, 1);
    color: #201a02;
  }
  body.is-mobile #touch-controls { padding-top: 6px; padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px)); }
}

/* ---------- tiny faint footer ---------- */
#site-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: max(3px, env(safe-area-inset-bottom, 0px));
  z-index: 2;
  text-align: center;
  font: 500 10px/1 "Vazirmatn", "Segoe UI", Tahoma, sans-serif;
  letter-spacing: 0.04em;
  color: #8a8f98;
  opacity: 0.32;
  pointer-events: none;
  direction: ltr;
}
body.show-controls #site-footer { opacity: 0; }

/* ---------- remote control: lock overlay, banner, messages ---------- */
#kg-lock {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(10, 12, 16, 0.96);
  color: var(--text);
  text-align: center;
  touch-action: auto;
}
.kg-lock-card { max-width: 420px; }
.kg-lock-icon { font-size: 60px; }
.kg-lock-title { font-size: clamp(20px, 5vw, 26px); font-weight: 800; margin: 10px 0 8px; }
.kg-lock-text { opacity: 0.8; line-height: 1.9; font-size: 15px; }

.kg-note {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  max-width: min(92vw, 520px);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.7;
  background: rgba(20, 24, 32, 0.95);
  border: 1px solid rgba(255, 210, 63, 0.55);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
  touch-action: auto;
  -webkit-user-select: text;
  user-select: text;
}
.kg-banner { top: max(8px, env(safe-area-inset-top, 0px)); }
.kg-dm { bottom: calc(60px + env(safe-area-inset-bottom, 0px)); border-color: rgba(120, 200, 255, 0.6); }
.kg-note-x {
  flex: none;
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  cursor: pointer;
  touch-action: manipulation;
}