/* War Dogs Mortar Calc — dark tactical, tuned to stay readable in a small
   overlay window next to the game. No frameworks, no external fonts. */

:root {
  --bg: #0b0e0b;
  --panel: #11160f;
  --panel-2: #161d12;
  --line: #263020;
  --line-hot: #3a4a2e;
  --text: #d8e4cf;
  --dim: #83947a;
  --accent: #9dff57;
  --accent-dim: #5c8f3a;
  --amber: #ffb454;
  --red: #ff6b5e;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  font-family: var(--sans);
  background:
    radial-gradient(1100px 500px at 50% -10%, #131a10 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 20px 40px;
}

/* ---------- header ---------- */

h1 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-size: clamp(20px, 4vw, 30px);
  letter-spacing: 0.12em;
  font-weight: 800;
}

.reticle {
  width: 22px;
  height: 22px;
  flex: none;
  border: 2px solid var(--accent);
  border-radius: 50%;
  position: relative;
}
.reticle::before, .reticle::after {
  content: "";
  position: absolute;
  background: var(--accent);
}
.reticle::before { left: 50%; top: -6px; bottom: -6px; width: 2px; transform: translateX(-50%); }
.reticle::after  { top: 50%; left: -6px; right: -6px; height: 2px; transform: translateY(-50%); }

.tagline {
  margin: 8px 0 24px;
  color: var(--dim);
  font-size: 14px;
  max-width: 60ch;
}
.tagline a { color: var(--accent); text-decoration: none; border-bottom: 1px dotted var(--accent-dim); }
.tagline a:hover { border-bottom-style: solid; }

/* ---------- inputs ---------- */

.inputs {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 14px;
  align-items: start;
}

.point {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
}

label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 10px;
}
label small {
  display: block;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--dim);
  font-weight: 400;
  margin-top: 5px;
  font-size: 11px;
  line-height: 1.5;
}
label em { color: var(--text); font-style: normal; }

.step {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  margin-right: 7px;
  border: 1px solid var(--accent-dim);
  border-radius: 3px;
  font-size: 11px;
  color: var(--accent);
  background: #0e130b;
}

input {
  width: 100%;
  font: 600 17px/1.4 var(--mono);
  color: var(--text);
  background: #0c100a;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.15s;
}
input:focus { border-color: var(--accent-dim); box-shadow: 0 0 0 3px #9dff5722; }
input::placeholder { color: #4c5a45; font-weight: 400; }

.feedback {
  margin: 8px 2px 0;
  font: 12px/1.5 var(--mono);
  min-height: 18px;
}
.feedback.ok    { color: var(--accent); }
.feedback.info  { color: var(--amber); }
.feedback.error { color: var(--red); }

.swap {
  margin-top: 34px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line-hot);
  background: var(--panel-2);
  color: var(--dim);
  font-size: 17px;
  cursor: pointer;
  transition: all 0.15s;
}
.swap:hover { color: var(--accent); border-color: var(--accent-dim); }
.swap:active { transform: rotate(180deg); }

/* ---------- result ---------- */

.result {
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  padding: 22px;
  min-height: 120px;
}

.waiting {
  margin: 14px auto;
  text-align: center;
  color: var(--dim);
  font: 13px/1.4 var(--mono);
  letter-spacing: 0.18em;
  animation: pulse 2s infinite;
}
@keyframes pulse { 50% { opacity: 0.45; } }

.range {
  display: flex;
  align-items: baseline;
  gap: 12px;
  justify-content: center;
}
.meters {
  font: 800 clamp(56px, 12vw, 92px)/1 var(--mono);
  color: var(--accent);
  text-shadow: 0 0 24px #9dff5733;
  font-variant-numeric: tabular-nums;
}
.unit { font: 700 24px var(--mono); color: var(--accent-dim); }
.rng {
  font: 12px var(--mono);
  letter-spacing: 0.14em;
  color: var(--dim);
  border: 1px solid var(--line-hot);
  border-radius: 5px;
  padding: 4px 9px;
}
.rng b { color: var(--amber); font-size: 14px; }

.advice {
  text-align: center;
  margin: 10px 0 18px;
  font-size: clamp(15px, 2.6vw, 18px);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.advice.warn { color: var(--amber); }
.advice.stop { color: var(--red); }

.weapons {
  list-style: none;
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}
.weapons li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 6px 14px;
  background: #0d120b;
}
.weapons b { font-weight: 700; }
.envelope { color: var(--dim); font-family: var(--mono); font-size: 11.5px; }
.status {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  border-radius: 4px;
  padding: 2px 7px;
}
li.in  .status { color: #0b0e0b; background: var(--accent); }
li.out .status { color: var(--red); border: 1px solid #ff6b5e55; }

.bearing {
  text-align: center;
  margin: 16px 0 0;
  color: var(--dim);
  font: 12.5px var(--mono);
}

/* ---------- footer ---------- */

footer {
  margin-top: 22px;
  color: var(--dim);
  font-size: 12.5px;
  line-height: 1.7;
}
.tips { margin: 8px 0; }
kbd {
  font: 11px var(--mono);
  border: 1px solid var(--line-hot);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text);
  background: var(--panel-2);
}

/* ---------- narrow screens ---------- */

@media (max-width: 640px) {
  .inputs { grid-template-columns: 1fr; }
  .swap {
    margin: -2px auto;
    transform: rotate(90deg);
  }
  .swap:active { transform: rotate(270deg); }
}