/* GORILLAS — page shell + DOM overlays. World rendering is all canvas;
   these styles never affect what is visible in the world (SPEC §9.1, §14.1). */

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #000;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  position: fixed;
  inset: 0;
}

:root {
  --yellow: #ffe14d;
  --ink: #e8ecf5;
  --dim: #8a93a8;
  --panel: rgba(3, 10, 34, 0.88);
  --mono: ui-monospace, Consolas, "Cascadia Mono", "Courier New", monospace;
  color-scheme: dark;   /* native widgets (select popups, spinners) render dark */
}

/* faint CRT scanlines — pure flourish */
#scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0 2px,
    rgba(0, 0, 0, 0.14) 2px 3px
  );
  opacity: 0.5;
  z-index: 5;
}

#ui {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 10;
  font-family: var(--mono);
  color: var(--ink);
}

.hidden { display: none !important; }

/* ---------------------------------------------------------- full screens */

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.panel {
  pointer-events: auto;
  background: var(--panel);
  border: 3px double var(--yellow);
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.35), 0 12px 60px rgba(0, 0, 0, 0.6);
  padding: clamp(18px, 4vmin, 44px) clamp(24px, 6vmin, 64px);
  text-align: center;
  max-width: min(88vw, 560px);
}

h1 {
  margin: 0 0 4px;
  color: var(--yellow);
  font-size: clamp(28px, 7vmin, 56px);
  letter-spacing: 0.08em;
  text-shadow: 3px 3px 0 rgba(0, 0, 0, 0.55);
}

h2 {
  margin: 0 0 14px;
  color: var(--yellow);
  font-size: clamp(16px, 3.4vmin, 26px);
  letter-spacing: 0.12em;
}

.tag {
  margin: 0 0 22px;
  color: var(--dim);
  font-size: clamp(11px, 2vmin, 15px);
  letter-spacing: 0.2em;
}

.hint {
  margin: 18px 0 0;
  color: var(--dim);
  font-size: clamp(10px, 1.8vmin, 13px);
}

.btnrow {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 10px;
}

button {
  pointer-events: auto;
  font-family: var(--mono);
  font-size: clamp(13px, 2.4vmin, 17px);
  letter-spacing: 0.1em;
  color: var(--yellow);
  background: transparent;
  border: 3px double var(--yellow);
  padding: 10px 22px;
  cursor: pointer;
  text-transform: uppercase;
}
button:hover, button:focus-visible {
  background: var(--yellow);
  color: #0a1030;
  outline: none;
}

/* ------------------------------------------------------------- setup form */

.form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
  text-align: left;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: clamp(12px, 2.2vmin, 15px);
  color: var(--dim);
  letter-spacing: 0.08em;
}

input[type="text"], input[type="number"], select {
  font-family: var(--mono);
  /* never below 16px: smaller text makes iOS Safari auto-zoom on focus,
     which is how the viewport ends up stuck mis-scaled mid-game */
  font-size: clamp(16px, 2.4vmin, 18px);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 225, 77, 0.5);
  padding: 6px 8px;
  width: 12em;
}
input[type="number"] { width: 5em; }
select { width: 12.5em; }
input:focus, select:focus {
  outline: 2px solid var(--yellow);
}

/* The dropdown popup is native UI: without explicit colors some browsers
   paint it white while the options inherit light text — unreadable. */
select option {
  background-color: #0a1030;
  color: var(--ink);
}

/* -------------------------------------------------------------- aim panel */

#aim {
  position: absolute;
  top: max(58px, 9vh);
  left: 14px;
  pointer-events: auto;
  background: var(--panel);
  border: 2px solid rgba(255, 225, 77, 0.6);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  max-width: min(92vw, 560px);
  font-size: clamp(11px, 2vmin, 14px);
}
#aim.side-right {
  left: auto;
  right: 14px;
}
#aim label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--dim);
  letter-spacing: 0.08em;
}
#aim-name {
  color: var(--yellow);
  letter-spacing: 0.08em;
  font-weight: bold;
}
#aim button {
  padding: 6px 14px;
  border-width: 2px;
}
#aim .hint {
  margin: 0;
  flex-basis: 100%;
}

/* ----------------------------------------------------------------- banner */

#banner {
  position: absolute;
  top: 26%;
  left: 0;
  right: 0;
  text-align: center;
  pointer-events: none;
}
#banner-title {
  color: var(--yellow);
  font-size: clamp(24px, 6vmin, 52px);
  font-weight: bold;
  letter-spacing: 0.1em;
  text-shadow: 3px 3px 0 rgba(0, 0, 0, 0.6);
}
#banner-sub {
  margin-top: 8px;
  color: var(--ink);
  font-size: clamp(12px, 2.6vmin, 18px);
  letter-spacing: 0.15em;
  text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.6);
}
#banner-buttons {
  margin-top: 20px;
  pointer-events: auto;
}

/* ------------------------------------------------------------------- mute */

#mute, #pause-btn {
  position: absolute;
  border: none;
  background: transparent;
  font-size: clamp(18px, 3vmin, 26px);
  padding: 6px;
  filter: drop-shadow(2px 2px 1px rgba(0, 0, 0, 0.6));
}
#mute { top: 10px; right: 12px; }
#pause-btn { bottom: 10px; left: 12px; }
#mute:hover, #pause-btn:hover { background: transparent; }

@media (max-width: 640px) {
  #aim { gap: 6px; padding: 6px 8px; }
  #aim .hint { display: none; }
}