/* Stormwind Trebuchet Simulator — field-manual HUD.
 * Parchment cards, iron hardware, Stormwind blue and gold, one warm ember
 * accent for the trajectory and the Fire control. */

:root {
  --ink: #2b2115;
  --ink-soft: #4c3d28;
  --parchment: #ead9b2;
  --parchment-deep: #d9c28f;
  --iron: #262119;
  --iron-edge: #4a3e2c;
  --gold: #c99a2e;
  --gold-bright: #e8c25a;
  --blue: #274f9e;
  --ember: #e8862e;
  --shadow: rgba(12, 9, 4, 0.45);
}

@media (prefers-color-scheme: light) {
  :root {
    --parchment: #f4e8c8;
    --parchment-deep: #e6d3a4;
    --shadow: rgba(30, 24, 12, 0.3);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #10141c;
  font-family: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
  color: var(--ink);
}

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

/* ------------------------------------------------------------------ */
/* Loading veil                                                         */
/* ------------------------------------------------------------------ */
#loading {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  background:
    radial-gradient(ellipse at 50% 60%, rgba(0,0,0,0) 40%, rgba(10,8,4,0.5) 100%),
    linear-gradient(#20242e, #141821);
  color: #d9c28f;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  z-index: 40;
  transition: opacity 0.5s ease;
}
#loading.done { opacity: 0; pointer-events: none; }

/* ------------------------------------------------------------------ */
/* Panels                                                               */
/* ------------------------------------------------------------------ */
#hud { position: fixed; inset: 0; pointer-events: none; z-index: 10; }
#hud > * { pointer-events: auto; }

.panel {
  position: absolute;
  background:
    radial-gradient(circle at 8px 8px, var(--iron-edge) 2.2px, transparent 2.6px),
    radial-gradient(circle at calc(100% - 8px) 8px, var(--iron-edge) 2.2px, transparent 2.6px),
    radial-gradient(circle at 8px calc(100% - 8px), var(--iron-edge) 2.2px, transparent 2.6px),
    radial-gradient(circle at calc(100% - 8px) calc(100% - 8px), var(--iron-edge) 2.2px, transparent 2.6px),
    linear-gradient(160deg, var(--parchment) 0%, var(--parchment-deep) 130%);
  border: 2px solid var(--iron);
  border-radius: 6px;
  box-shadow:
    inset 0 0 0 1px rgba(255, 244, 214, 0.35),
    0 8px 22px var(--shadow);
  padding: 10px 14px 12px;
  font-size: 13px;
  line-height: 1.35;
}

.panel h2 {
  margin: 0 0 7px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--blue);
  border-bottom: 1px solid rgba(43, 33, 21, 0.35);
  padding-bottom: 4px;
}

.rows { margin: 0; display: grid; grid-template-columns: auto 1fr; column-gap: 12px; }
.rows dt { color: var(--ink-soft); font-size: 12px; padding: 1.5px 0; }
.rows dd {
  margin: 0;
  text-align: right;
  font-family: ui-monospace, 'Cascadia Mono', Menlo, Consolas, monospace;
  font-size: 12px;
  padding: 1.5px 0;
  white-space: nowrap;
}

/* Top left — shot setup */
#panel-setup { top: 14px; left: 14px; width: 252px; }

/* Top right — predicted / actual */
#panel-result { top: 14px; right: 14px; width: 256px; }
.target-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin: 0 0 6px;
  font-weight: 700;
  color: var(--ink);
}
.target-line span:last-child {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  color: var(--blue);
}
.damage { margin: 8px 0 0; font-size: 12px; color: var(--ink-soft); }
.damage strong {
  color: var(--ember);
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 14px;
  margin-left: 6px;
}

/* Right column under result — engineering panel */
#panel-tune { top: 300px; right: 14px; width: 256px; max-height: calc(100% - 316px); display: flex; flex-direction: column; }
.tune-body { overflow-y: auto; scrollbar-width: thin; padding-right: 4px; }
.ctl { margin: 0 0 5px; display: grid; grid-template-columns: 1fr auto; row-gap: 1px; }
.ctl label { font-size: 12px; color: var(--ink); }
.ctl output {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 11px;
  color: var(--blue);
  text-align: right;
}
.ctl input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--gold);
  cursor: pointer;
  height: 17px;
}
#advanced { margin: 2px 0 8px; }
#advanced summary {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  letter-spacing: 0.04em;
  padding: 2px 0;
}
#advanced[open] summary { margin-bottom: 8px; }
.ctl-note { margin: 4px 0 0; font-size: 11px; color: var(--ink-soft); font-style: italic; }

/* Bottom left — energy & mechanism */
#panel-energy { bottom: 14px; left: 14px; width: 262px; }
.phase { margin: 0 0 8px; font-size: 12px; color: var(--ink-soft); }
.phase strong { color: var(--ink); margin-left: 6px; text-transform: uppercase; letter-spacing: 0.06em; font-size: 11.5px; }
.bar { display: grid; grid-template-columns: 1fr auto; row-gap: 3px; margin-bottom: 7px; font-size: 11.5px; }
.bar span { color: var(--ink-soft); }
.bar b { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 11px; }
.bar i {
  grid-column: 1 / -1;
  display: block;
  height: 7px;
  background: rgba(43, 33, 21, 0.25);
  border: 1px solid rgba(43, 33, 21, 0.45);
  border-radius: 3px;
  overflow: hidden;
}
.bar u {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--ember));
}
.ring { margin: 2px 0 0; font-size: 11.5px; color: var(--ink-soft); }
.ring strong { color: var(--ink); font-family: ui-monospace, Menlo, Consolas, monospace; }

/* Bottom centre — primary controls */
#controls {
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
  max-width: min(720px, calc(100% - 580px));
}

button {
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--parchment);
  background: linear-gradient(#3a332a, #262119);
  border: 2px solid var(--iron);
  border-radius: 5px;
  padding: 8px 14px;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 240, 205, 0.18), 0 3px 8px rgba(8, 6, 2, 0.4);
}
button:hover:not(:disabled) { border-color: var(--gold); }
button:disabled { opacity: 0.45; cursor: default; }
button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 3px solid var(--gold-bright);
  outline-offset: 2px;
}

#btn-fire {
  font-size: 17px;
  padding: 11px 34px;
  color: #221302;
  background: linear-gradient(#f5a54e, var(--ember) 55%, #c96a17);
  border-color: #7c3f0c;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
#btn-fire:hover:not(:disabled) { border-color: var(--gold-bright); }

#hints {
  width: 100%;
  margin: 2px 0 0;
  text-align: center;
  font-size: 11px;
  color: rgba(234, 217, 178, 0.92);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
}
#hints b { color: var(--gold-bright); font-weight: 600; }

#status {
  position: absolute;
  left: 50%;
  bottom: 96px;
  transform: translateX(-50%);
  margin: 0;
  max-width: min(640px, calc(100% - 600px));
  text-align: center;
  font-size: 13px;
  font-style: italic;
  color: #f0e3c2;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.85);
  pointer-events: none;
}

#tune-toggle { display: none; }

/* ------------------------------------------------------------------ */
/* Small screens: collapse tuning into a drawer                         */
/* ------------------------------------------------------------------ */
@media (max-width: 759px) {
  .panel { font-size: 12px; padding: 8px 10px 10px; }
  #panel-setup { top: 10px; left: 10px; width: 186px; }
  #panel-result { top: 10px; right: 10px; width: 190px; }
  #panel-energy { bottom: 10px; left: 10px; width: 200px; }
  .bar span { font-size: 10.5px; }

  #tune-toggle {
    display: block;
    position: absolute;
    right: 10px;
    bottom: 74px;
    z-index: 20;
    background: linear-gradient(#4a3e2c, #33291a);
  }

  #panel-tune {
    top: auto;
    bottom: 0;
    right: 0;
    width: min(320px, 86vw);
    max-height: 78vh;
    border-radius: 6px 0 0 0;
    transform: translateX(105%);
    transition: transform 0.25s ease;
    z-index: 30;
  }
  #panel-tune.open { transform: translateX(0); }

  #controls { max-width: calc(100vw - 20px); bottom: 10px; }
  #hints { display: none; }
  #status { bottom: 130px; max-width: calc(100vw - 220px); font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  #loading { transition: none; }
  #panel-tune { transition: none; }
}