/* Stormwind Trebuchet Simulator - field manual interface.
   Two schemes: parchment (light) and iron (dark). */

:root {
  --panel-bg: rgba(246, 238, 220, 0.95);
  --panel-bg-solid: #f4ecda;
  --panel-border: #7a5f36;
  --panel-rule: rgba(122, 95, 54, 0.35);
  --ink: #241c12;
  --ink-soft: #5c4a32;
  --gold: #a8791d;
  --blue: #1f3b73;
  --accent: #d1621a;
  --accent-strong: #a8460c;
  --shadow: 0 2px 10px rgba(20, 14, 6, 0.35);
  --btn-bg: #e6dac0;
  --btn-bg-hover: #f3e9d3;
  --btn-border: #85673c;
  --focus: #ff9a2e;
  --font-ui: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --font-num: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --panel-bg: rgba(24, 25, 30, 0.94);
    --panel-bg-solid: #1b1d23;
    --panel-border: #6f7787;
    --panel-rule: rgba(140, 150, 168, 0.30);
    --ink: #eceff5;
    --ink-soft: #a9b2c2;
    --gold: #dfb154;
    --blue: #8fb2ef;
    --accent: #ffa23a;
    --accent-strong: #ffbe70;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
    --btn-bg: #2b2f38;
    --btn-bg-hover: #3a404c;
    --btn-border: #8a94a6;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #0d1016;
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.35;
}

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

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------------------------------------------ boot */

#boot {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(#182033, #0d1016);
  color: #f0e6cf;
  font-size: 18px;
  letter-spacing: 0.04em;
  z-index: 30;
  transition: opacity 0.4s ease;
}
#boot.hidden { opacity: 0; pointer-events: none; }
#boot.error { background: #3a1414; }

/* ------------------------------------------------------------------- hud */

#hud {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  padding: 12px;
  display: grid;
  grid-template-columns: 268px 1fr 288px;
  grid-template-rows: auto 1fr auto;
  gap: 10px;
}

.panel {
  pointer-events: auto;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 3px;
  box-shadow: var(--shadow);
  padding: 9px 11px 10px;
  /* a field-manual corner cut */
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.panel h2 {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid var(--panel-rule);
  padding-bottom: 4px;
}

.panel--setup { grid-column: 1; grid-row: 1; align-self: start; }
.panel--result { grid-column: 3; grid-row: 1; align-self: start; }
.panel--energy { grid-column: 1; grid-row: 3; align-self: end; }
.panel--tuning { grid-column: 3; grid-row: 2 / 4; align-self: start; max-height: 100%; overflow-y: auto; }
.panel--controls { grid-column: 2; grid-row: 3; align-self: end; justify-self: center; }

.readouts { margin: 0; display: grid; gap: 2px; }
.readouts > div { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.readouts dt { color: var(--ink-soft); font-size: 12.5px; }
.readouts dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}
.readouts--tight dt, .readouts--tight dd { font-size: 12px; }

.damage { margin: 7px 0 0; font-size: 12.5px; border-top: 1px solid var(--panel-rule); padding-top: 5px; }
.damage strong { font-family: var(--font-num); color: var(--accent); }

.phase { margin: 7px 0 0; font-size: 12.5px; border-top: 1px solid var(--panel-rule); padding-top: 5px; }
.phase strong { text-transform: uppercase; letter-spacing: 0.08em; color: var(--blue); }

.shot-note {
  grid-column: 2;
  grid-row: 2;
  justify-self: center;
  align-self: end;
  margin: 0 0 6px;
  font-size: 13px;
  color: #fff4e0;
  background: rgba(20, 14, 6, 0.55);
  border-left: 3px solid var(--accent);
  padding: 4px 10px;
  border-radius: 2px;
  max-width: 460px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.shot-note.show { opacity: 1; }

/* ---------------------------------------------------------------- tuning */

.control-list { display: grid; gap: 6px; }

.control {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  column-gap: 8px;
  row-gap: 1px;
}
.control label { font-size: 12.5px; color: var(--ink-soft); }
.control output {
  font-family: var(--font-num);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.control input[type="range"] {
  grid-column: 1 / 3;
  width: 100%;
  margin: 0;
  height: 20px;
  background: transparent;
  accent-color: var(--accent);
  cursor: pointer;
}
.control input[type="range"]::-webkit-slider-runnable-track {
  height: 5px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--accent) 100%);
  border-radius: 3px;
  border: 1px solid var(--panel-rule);
}
.control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px; height: 15px;
  margin-top: -6px;
  border-radius: 50%;
  background: var(--btn-bg-solid, #f4ecda);
  border: 2px solid var(--accent-strong);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}
.control input[type="range"]::-moz-range-track {
  height: 5px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--accent) 100%);
  border-radius: 3px;
}
.control input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #f4ecda;
  border: 2px solid var(--accent-strong);
}

#advanced { margin-top: 8px; font-size: 12.5px; }
#advanced summary { cursor: pointer; color: var(--gold); letter-spacing: 0.06em; }
#advanced .control-list { margin-top: 6px; }

.hint { margin: 8px 0 0; font-size: 11.5px; color: var(--ink-soft); }

/* --------------------------------------------------------------- buttons */

.buttons { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.buttons--small { margin-top: 6px; }

.btn {
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--ink);
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  border-radius: 3px;
  padding: 7px 14px;
  cursor: pointer;
  transition: background 0.12s ease, transform 0.06s ease;
}
.btn:hover { background: var(--btn-bg-hover); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn--fire {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff5e6;
  background: linear-gradient(#d9701f, #a8460c);
  border-color: #6d2c05;
  padding: 9px 30px;
  box-shadow: 0 2px 0 #6d2c05;
}
.btn--fire:hover { background: linear-gradient(#ea8130, #bb5412); }
.btn--fire:disabled { background: #8a8a86; border-color: #6a6a68; box-shadow: none; }

.btn--ghost { font-size: 12px; padding: 4px 9px; background: transparent; }
.btn--ghost:hover { background: var(--panel-rule); }
.btn--tune { display: none; }

.btn:focus-visible, summary:focus-visible, input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.panel--controls .hint { text-align: center; }

/* --------------------------------------------------------- small screens */

@media (max-width: 1120px) {
  #hud { grid-template-columns: 232px 1fr 250px; }
  .readouts dt, .readouts dd { font-size: 11.5px; }
}

@media (max-width: 900px) {
  #hud {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto 1fr auto;
    padding: 8px;
    gap: 8px;
  }
  .panel--setup { grid-column: 1; grid-row: 1; max-width: 60vw; }
  .panel--result { grid-column: 2; grid-row: 1; }
  .panel--energy { display: none; }
  .panel--tuning {
    grid-column: 1 / 3;
    grid-row: 2;
    display: none;
    max-height: 52vh;
    overscroll-behavior: contain;
  }
  .panel--tuning.open { display: block; }
  .panel--controls { grid-column: 1 / 3; grid-row: 4; justify-self: stretch; }
  .btn--tune { display: inline-block; }
}

@media (max-width: 560px) {
  body { font-size: 14px; }
  .panel--setup { max-width: 54vw; }
  .panel--setup .readouts > div:nth-child(n+5) { display: none; }
  .panel--result .readouts > div:nth-child(n+5) { display: none; }
  .btn { padding: 9px 12px; font-size: 15px; }
  .btn--fire { padding: 10px 26px; font-size: 16px; }
}

/* ------------------------------------------------------- reduced motion */

@media (prefers-reduced-motion: reduce) {
  #boot { transition: none; }
  .shot-note { transition: none; }
  .btn { transition: none; }
}