/* Delve — a lantern in a cave.

   Gravity Golf is glass, Castle Defense carved wood, Pentakeover an engraved
   plate, Tank Duel painted steel. This one is wet stone: brown-slate panels,
   a glow-moss green for anything that guides you, and the player's cyan for
   anything that is yours. Everything outside the canvas stays dim so the
   lantern-lit cave is the brightest thing on the page. */

:root {
  --ground: #0a0908;
  --plate: #15130f;
  --edge: #2e2a22;
  --ink: #e6e1d6;
  --muted: #8f877a;
  --moss: #8fdc6a;
  --cyan: #5fe3f0;
  --ember: #f08a3c;
  --hurt: #e0503c;

  --num: ui-monospace, "Cascadia Mono", Consolas, monospace;
}

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

html, body { height: 100%; }

body {
  background: radial-gradient(ellipse at 50% -20%, #1d1a14, var(--ground) 70%);
  color: var(--ink);
  font: 14px/1.5 ui-sans-serif, system-ui, "Segoe UI", Roboto, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 16px 16px;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}

/* Back to the landing page. Same corner and size as the other games. */
.back {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 20;
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 1px;
  padding: 7px 11px;
  border: 1px solid var(--edge);
  border-radius: 3px;
  background: var(--plate);
  color: var(--muted);
  text-decoration: none;
}

.back:hover, .back:focus-visible { color: var(--moss); border-color: var(--moss); outline: none; }

/* The canvas keeps 960x544 and scales down to whatever the window allows,
   leaving room for the HUD above and the tray below. */
#app {
  width: min(960px, calc(100vw - 32px), calc((100vh - 150px) * 960 / 544));
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#hud {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

h1 {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .5em;
  text-transform: uppercase;
  color: var(--moss);
  text-shadow: 0 0 12px #8fdc6a55;
  padding-left: .5em;
}

.lbl {
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.hp { display: flex; align-items: center; gap: 8px; min-width: 0; }

.track {
  flex: 1;
  max-width: 220px;
  height: 10px;
  background: #241f19;
  border: 1px solid var(--edge);
  border-radius: 2px;
  overflow: hidden;
}

#hpFill {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #3fb7c4, var(--cyan));
  transition: width .15s ease;
}

#hpFill.low { background: linear-gradient(90deg, #a8382a, var(--hurt)); }

.hp b, .stat b { font-family: var(--num); font-size: 14px; color: var(--ink); }

.stats { display: flex; justify-content: flex-end; gap: 16px; flex-wrap: wrap; }

#stage {
  position: relative;
  border: 1px solid var(--edge);
  border-radius: 4px;
  overflow: hidden;
  background: #050404;
  aspect-ratio: 960 / 544;
}

#canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

#tray {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  min-height: 26px;
  flex-wrap: wrap;
}

#powers, #relics { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

.chip {
  font-size: 12px;
  line-height: 1;
  padding: 5px 8px;
  border: 1px solid var(--c, var(--edge));
  border-radius: 3px;
  background: var(--plate);
  color: var(--c, var(--muted));
  white-space: nowrap;
}

.chip b { font-family: var(--num); color: var(--ink); margin-left: 4px; }

.relic { --c: var(--ember); }

/* Overlays: title, relic pick, pause, death and victory share one panel. */
#overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 24px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 40%, #0a0908c0, #050404f2 75%);
}

#overlay[hidden] { display: none; }

#overlay h2 {
  font-size: clamp(26px, 5vw, 44px);
  font-weight: 800;
  letter-spacing: .35em;
  text-transform: uppercase;
  padding-left: .35em;
  color: var(--moss);
  text-shadow: 0 0 18px #8fdc6a66;
}

#overlay h2.bad { color: var(--hurt); text-shadow: 0 0 18px #e0503c66; }
#overlay h2.good { color: var(--cyan); text-shadow: 0 0 18px #5fe3f066; }
#overlay p.paused { margin-top: -10px; font-size: 12px; font-weight: 700; letter-spacing: .3em; text-transform: uppercase; color: var(--ink); }

#overlay p { color: var(--muted); max-width: 560px; }
#overlay p b { color: var(--ink); font-family: var(--num); }

#overlay .keys { font-size: 12px; line-height: 2; }

kbd {
  font-family: var(--num);
  font-size: 11px;
  padding: 1px 5px;
  border: 1px solid var(--edge);
  border-bottom-width: 2px;
  border-radius: 3px;
  background: var(--plate);
  color: var(--ink);
}

#overlay button {
  font: inherit;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 10px 22px;
  border: 1px solid var(--moss);
  border-radius: 3px;
  background: #1b2414;
  color: var(--moss);
  cursor: pointer;
}

#overlay button:hover, #overlay button:focus-visible { background: #26361b; outline: none; }
#overlay button.quiet { border-color: var(--edge); background: var(--plate); color: var(--muted); }

.row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }

/* Relic cards: three across, each a button. */
.relics { display: grid; grid-template-columns: repeat(3, minmax(0, 200px)); gap: 12px; }

#overlay .card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-transform: none;
  letter-spacing: 0;
  text-align: left;
  padding: 14px;
  border-color: var(--ember);
  background: #1d150e;
  color: var(--ink);
}

#overlay .card:hover, #overlay .card:focus-visible { background: #2a1d12; }
.card .name { font-weight: 800; color: var(--ember); }
.card .what { font-weight: 400; font-size: 13px; color: var(--muted); }
.card .owned { font-size: 12px; font-weight: 700; color: var(--moss); }
.card kbd { align-self: flex-start; }

@media (max-width: 640px) {
  .relics { grid-template-columns: 1fr; }
  #overlay { gap: 8px; padding: 12px; }
  #overlay .keys { display: none; }
  h1 { display: none; }
  #hud { grid-template-columns: 1fr auto; }
}

/* Phones and tablets. The canvas takes as much of a landscape screen as it
   can: the back link moves beside it, the title and the tray go, and the
   stage swallows touches so dragging a stick never scrolls or zooms. */
#stage { touch-action: none; }
#rotate { display: none; }

@media (pointer: coarse) {
  /* The side padding clears the notch and the home bar when the page runs
     edge to edge (viewport-fit=cover). */
  body { padding: 8px max(8px, env(safe-area-inset-right)) 8px max(8px, env(safe-area-inset-left)); gap: 8px; align-items: flex-start; }
  .back { position: static; flex: none; white-space: nowrap; }
  /* A blank twin of the back link on the right keeps the game centred. It
     gives way first when the screen is too narrow for both. */
  body::after { content: ''; flex: 0 1000 107px; }
  #app { width: auto; flex: 0 1 calc((100vh - 48px) * 960 / 544); flex-basis: calc((100dvh - 48px - env(safe-area-inset-bottom)) * 960 / 544); min-width: 0; gap: 4px; }
  #overlay { overflow-y: auto; justify-content: safe center; }

  /* No room below the canvas, so the powerups float over its top-left corner
     (the pause button has the top-right) and let touches through. They hide
     while a menu is open; relics are listed in the pause menu instead. */
  #app { display: grid; grid-template-columns: minmax(0, 1fr); }
  #stage { grid-row: 2; grid-column: 1; }
  #relics { display: none; }
  #tray {
    grid-row: 2; grid-column: 1;
    align-self: start;
    flex-direction: column;
    justify-content: flex-start;
    gap: 3px;
    min-height: 0;
    margin: 6px;
    max-width: 45%;
    z-index: 1;
    pointer-events: none;
  }
  #powers { gap: 3px; }
  #tray .chip { font-size: 10px; padding: 3px 5px; background: #15130fcc; }
  #app:has(#overlay:not([hidden])) #tray { display: none; }
}

@media (pointer: coarse) and (max-height: 520px) {
  h1 { display: none; }
  #hud { grid-template-columns: 1fr auto; }
  #overlay { gap: 6px; padding: 10px; }
  #overlay h2 { font-size: 24px; }
  #overlay p { font-size: 13px; }
  /* The sticks are labelled on screen and the tutorial teaches them, so the
     title spends its little height on the game, not the controls. */
  #overlay .keys { display: none; }
}

@media (pointer: coarse) and (orientation: portrait) {
  #rotate {
    display: flex;
    position: fixed;
    inset: 0;
    z-index: 30;
    align-items: center;
    justify-content: center;
    padding: 32px;
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--moss);
    background: var(--ground);
  }
}

/* Fullscreen on a phone: the back link goes (leaving fullscreen is the way
   out) and the game takes the whole screen less the HUD. */
:fullscreen body { padding: 4px; }
:fullscreen .back, :fullscreen body::after { display: none; }
:fullscreen #app { flex: 0 1 calc((100vh - 36px) * 960 / 544); }

/* Difficulty: one segmented row, the chosen one lit. */
.diffs { display: flex; flex-wrap: wrap; justify-content: center; }
#overlay .diff {
  padding: 6px 12px;
  font-size: 12px;
  border-color: var(--edge);
  border-radius: 0;
  margin-left: -1px;
  background: var(--plate);
  color: var(--muted);
}
#overlay .diff:first-child { border-radius: 3px 0 0 3px; margin-left: 0; }
#overlay .diff:last-child { border-radius: 0 3px 3px 0; }
#overlay .diff[aria-checked="true"] { position: relative; border-color: var(--moss); background: #1b2414; color: var(--moss); }

/* Relics held, listed on the pause screen. */
#overlay .held { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; max-width: 560px; }
#overlay .held .chip { font-size: 12px; line-height: 1.3; white-space: normal; }

/* Admin panel (?admin only): a dense testing sheet pinned to the right. */
#admin {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  width: min(300px, 70vw);
  overflow-y: auto;
  padding: 8px 10px 16px;
  background: #0d0c0aee;
  border-left: 1px solid var(--edge);
  font-size: 12px;
  -webkit-user-select: text;
  user-select: text;
}
#admin[hidden] { display: none; }
#admin header { display: flex; justify-content: space-between; align-items: center; color: var(--moss); letter-spacing: .2em; text-transform: uppercase; }
#admin header span { display: flex; gap: 4px; letter-spacing: 0; text-transform: none; }
#admin section { margin-top: 10px; }
#admin h3 { font-size: 10px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
#admin .btns { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 4px; }
#admin button, #admin input {
  font: inherit;
  font-size: 11px;
  padding: 4px 7px;
  border: 1px solid var(--edge);
  border-radius: 3px;
  background: var(--plate);
  color: var(--ink);
}
#admin button { cursor: pointer; }
#admin button:hover { border-color: var(--moss); }
#admin button.on { border-color: var(--moss); background: #1b2414; color: var(--moss); }
#admin input { width: 70px; }
#admin .relicRows { display: grid; grid-template-columns: 1fr auto auto auto; gap: 3px 6px; align-items: center; }
#admin .relicRows b { font-family: var(--num); text-align: right; min-width: 1ch; }
#admin .relicRows button { padding: 2px 8px; }
#admin pre { font-family: var(--num); font-size: 10.5px; line-height: 1.45; white-space: pre-wrap; word-break: break-all; color: var(--muted); }
/* With a mouse there is usually room: the game moves over rather than under. */
@media (pointer: fine) {
  body:has(#admin:not([hidden])) { padding-right: 316px; }
  body:has(#admin:not([hidden])) #app { width: min(960px, calc(100vw - 348px), calc((100vh - 150px) * 960 / 544)); }
}