/* ============ GliderForge ============ */
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --sky1: #aedcff; --sky2: #eaf7ff;
  --ink: #1d3244; --ink2: #557089;
  --panel: rgba(255,255,255,.72);
  --accent: #ff6b4a; --accent2: #ff8f5e;
  --blue: #2f7fd0; --balsa: #ecd3a3;
  --good: #2e9e6b; --warn: #d98a12; --bad: #d0453a;
  --radius: 16px;
  font-size: 15px;
}
html, body { height: 100%; }
body {
  font-family: "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, var(--sky1), var(--sky2) 70%, #f7f2e4);
  overflow: hidden;
}
#app { display: flex; flex-direction: column; height: 100vh; }

/* ---------- header ---------- */
header {
  display: flex; align-items: center; gap: 18px;
  padding: 10px 18px;
  background: rgba(255,255,255,.55);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(29,50,68,.08);
}
.logo { display: flex; align-items: baseline; gap: 8px; font-size: 21px; }
.logo b { letter-spacing: -.5px; }
.logoPlane { font-size: 24px; transform: translateY(2px); display: inline-block; }
.logo .tag { font-size: 12px; color: var(--ink2); }
.nameWrap { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.nameWrap label { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--ink2); }
#planeName {
  font: 700 16px/1 "Avenir Next", system-ui, sans-serif;
  letter-spacing: 2px; text-transform: uppercase;
  border: 2px solid rgba(29,50,68,.15); border-radius: 10px;
  padding: 7px 12px; width: 190px; background: rgba(255,255,255,.85); color: var(--ink);
  outline: none; transition: border-color .15s;
}
#planeName:focus { border-color: var(--blue); }
button {
  font: 600 14px/1 inherit; color: var(--ink);
  border: none; border-radius: 12px; padding: 10px 16px;
  background: rgba(255,255,255,.9); cursor: pointer;
  box-shadow: 0 1px 3px rgba(29,50,68,.15);
  transition: transform .08s, box-shadow .15s, background .15s;
}
button:hover { transform: translateY(-1px); box-shadow: 0 3px 8px rgba(29,50,68,.18); }
button:active { transform: translateY(0); }
button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; font-weight: 700;
}
button.mini { padding: 7px 11px; font-size: 13px; border-radius: 10px; }
button.on { background: var(--blue); color: #fff; }

/* ---------- layout ---------- */
#body { flex: 1; display: flex; min-height: 0; }
#panel {
  width: 302px; min-width: 302px; overflow-y: auto;
  padding: 14px 14px 24px;
  background: var(--panel); backdrop-filter: blur(10px);
  border-right: 1px solid rgba(29,50,68,.08);
}
#stage { flex: 1; display: flex; flex-direction: column; min-width: 0; }
#cwrap { flex: 1; position: relative; min-height: 0; }
#cv { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

/* ---------- tabs ---------- */
#tabs { display: flex; gap: 6px; padding: 10px 14px 4px; }
#tabs button {
  border-radius: 999px; padding: 9px 18px; font-weight: 600;
  background: rgba(255,255,255,.6); color: var(--ink2); box-shadow: none;
}
#tabs button.on { background: var(--ink); color: #fff; }

/* ---------- sliders ---------- */
.sgroup { margin-bottom: 6px; }
.sgroup h3 {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1.6px;
  color: var(--ink2); margin: 14px 4px 8px;
}
.srow {
  background: rgba(255,255,255,.65); border-radius: 14px;
  padding: 9px 12px 7px; margin-bottom: 8px;
}
.srow .top { display: flex; justify-content: space-between; align-items: baseline; }
.srow .lbl { font-size: 13.5px; font-weight: 600; }
.srow .val { font-size: 12.5px; color: var(--blue); font-weight: 700; font-variant-numeric: tabular-nums; }
.srow .ends { display: flex; justify-content: space-between; font-size: 11px; color: var(--ink2); margin-top: -2px; }
input[type=range] { -webkit-appearance: none; width: 100%; height: 26px; background: transparent; }
input[type=range]::-webkit-slider-runnable-track {
  height: 6px; border-radius: 3px;
  background: linear-gradient(90deg, #cfe3f5, #9ec9ec);
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 20px; height: 20px; margin-top: -7px;
  border-radius: 50%; background: #fff; border: 3px solid var(--accent);
  box-shadow: 0 1px 4px rgba(29,50,68,.3); cursor: grab;
}
input[type=range]:active::-webkit-slider-thumb { cursor: grabbing; transform: scale(1.12); }

/* ---------- readouts ---------- */
#readouts { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin-top: 16px; }
.chip {
  background: rgba(255,255,255,.8); border-radius: 12px; padding: 8px 10px;
}
.chip .k { font-size: 10.5px; text-transform: uppercase; letter-spacing: .8px; color: var(--ink2); }
.chip .v { font-size: 16px; font-weight: 700; margin-top: 1px; font-variant-numeric: tabular-nums; }
.chip .v small { font-size: 11px; font-weight: 600; color: var(--ink2); }
.chip.wide { grid-column: span 2; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; color: #fff; font-size: 12.5px; font-weight: 700; }
#warnings { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.warnItem {
  background: #fff3e2; border: 1px solid #f2c98d; color: #8a5b13;
  border-radius: 10px; padding: 8px 10px; font-size: 12.5px;
}

/* ---------- bottom bar ---------- */
#bar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 16px; min-height: 58px;
  background: rgba(255,255,255,.6); backdrop-filter: blur(8px);
  border-top: 1px solid rgba(29,50,68,.08);
}
#bar .barSlider { display: flex; align-items: center; gap: 8px; }
#bar .barSlider label { font-size: 12.5px; font-weight: 600; color: var(--ink2); white-space: nowrap; }
#bar .barSlider input[type=range] { width: 130px; }
#bar .barSlider .bval { font-size: 12.5px; font-weight: 700; color: var(--blue); min-width: 44px; font-variant-numeric: tabular-nums; }
#bar select {
  font: 600 13px/1 inherit; padding: 8px 10px; border-radius: 10px;
  border: 1px solid rgba(29,50,68,.18); background: #fff; color: var(--ink);
}
#bar input[type=text] {
  font: 600 14px/1 inherit; padding: 8px 10px; border-radius: 10px;
  border: 2px solid rgba(29,50,68,.15); background: #fff; color: var(--ink); width: 140px; outline: none;
}
button.fly {
  background: linear-gradient(135deg, #ffd23f, var(--accent));
  color: #5b2000; font-size: 17px; font-weight: 800; padding: 12px 30px;
  border-radius: 999px; letter-spacing: 1px;
  box-shadow: 0 4px 14px rgba(255,107,74,.45);
}
button.fly:hover { transform: translateY(-2px) scale(1.03); }
.spacer { flex: 1; }
.stampBtn { font-size: 18px; padding: 7px 10px; }
.hint { font-size: 12px; color: var(--ink2); }

/* ---------- hud / overlays ---------- */
#hud { position: absolute; inset: 0; pointer-events: none; }
.resultCard {
  position: absolute; left: 50%; top: 44%; transform: translate(-50%,-50%);
  background: rgba(255,255,255,.94); border-radius: 22px; padding: 26px 40px;
  text-align: center; pointer-events: auto;
  box-shadow: 0 12px 50px rgba(29,50,68,.28);
  animation: pop .35s cubic-bezier(.2,1.6,.4,1);
}
@keyframes pop { from { transform: translate(-50%,-40%) scale(.7); opacity: 0; } }
.resultCard .big { font-size: 44px; font-weight: 800; letter-spacing: -1px; }
.resultCard .stars { font-size: 26px; margin: 4px 0; letter-spacing: 4px; }
.resultCard .sub { color: var(--ink2); font-size: 14px; margin-bottom: 6px; }
.resultCard .tip { font-size: 12.5px; color: var(--ink2); max-width: 300px; margin: 6px auto 12px; }
.settingsCard .setGrid { display: flex; flex-direction: column; gap: 10px; text-align: left; margin: 4px 0; }
.settingsCard .setRow { display: flex; align-items: center; justify-content: space-between; gap: 14px; font-size: 13px; }
.settingsCard .setRow label { font-weight: 600; color: var(--ink2); }
.settingsCard .setRow input[type=number] {
  font: 600 14px/1 inherit; padding: 7px 9px; border-radius: 10px;
  border: 2px solid rgba(29,50,68,.15); background: #fff; color: var(--ink);
  width: 90px; outline: none;
}
.settingsCard .setRow select {
  font: 600 13px/1 inherit; padding: 7px 9px; border-radius: 10px;
  border: 2px solid rgba(29,50,68,.15); background: #fff; color: var(--ink); outline: none;
}
.settingsCard .setRow input[type=number]:focus,
.settingsCard .setRow select:focus { border-color: var(--blue); }
#toast {
  position: absolute; left: 50%; bottom: 18px;
  transform: translate(-50%, 16px);
  background: rgba(29,50,68,.93); color: #fff;
  font: 600 13.5px/1 "Avenir Next", system-ui, sans-serif;
  padding: 13px 22px; border-radius: 999px;
  opacity: 0; transition: opacity .25s, transform .25s;
  pointer-events: none; z-index: 60; white-space: nowrap;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }
#errbox {
  position: absolute; left: 8px; bottom: 8px; right: 8px; display: none;
  background: #c0392b; color: #fff; font: 12px/1.4 monospace;
  padding: 8px 10px; border-radius: 8px; white-space: pre-wrap; z-index: 50;
}
::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-thumb { background: rgba(29,50,68,.18); border-radius: 5px; }
@media (max-width: 900px) {
  #body { flex-direction: column; }
  #panel { width: 100%; min-width: 0; max-height: 38vh; order: 2; }
}