:root {
  --bg: #edf2f7;
  --bg-strong: #dfe9f5;
  --card: rgba(255, 255, 255, 0.8);
  --panel: rgba(255, 255, 255, 0.72);
  --ink: #101827;
  --muted: #5f6b7d;
  --accent: #d92d2d;
  --accent-2: #1d4ed8;
  --border: rgba(148, 163, 184, 0.35);
  --input-bg: rgba(255, 255, 255, 0.8);
  --shadow: rgba(15, 23, 42, 0.12);
  --button-muted: rgba(148, 163, 184, 0.18);
  --glow-1: rgba(125, 211, 252, 0.35);
  --glow-2: rgba(59, 130, 246, 0.22);
  --surface-glow-1: rgba(59, 130, 246, 0.08);
  --surface-glow-2: rgba(168, 85, 247, 0.08);
}

body[data-theme="dark"] {
  --bg: #111827;
  --bg-strong: #0f172a;
  --card: rgba(17, 24, 39, 0.85);
  --panel: rgba(15, 23, 42, 0.9);
  --ink: #e5edf8;
  --muted: #9caec5;
  --accent: #ff5d5d;
  --accent-2: #7bb7ff;
  --border: rgba(148, 163, 184, 0.22);
  --input-bg: rgba(15, 23, 42, 0.9);
  --shadow: rgba(2, 6, 23, 0.38);
  --button-muted: rgba(148, 163, 184, 0.12);
  --glow-1: rgba(30, 64, 175, 0.24);
  --glow-2: rgba(15, 23, 42, 0.4);
  --surface-glow-1: rgba(59, 130, 246, 0.12);
  --surface-glow-2: rgba(168, 85, 247, 0.1);
}

body[data-theme="ocean"] {
  --bg: #e7f4f8;
  --bg-strong: #b8dce5;
  --card: rgba(247, 252, 253, 0.86);
  --panel: rgba(232, 247, 250, 0.82);
  --ink: #123047;
  --muted: #527080;
  --accent: #c2413b;
  --accent-2: #087f8c;
  --border: rgba(14, 116, 144, 0.25);
  --input-bg: rgba(255, 255, 255, 0.86);
  --shadow: rgba(12, 74, 110, 0.18);
  --button-muted: rgba(14, 116, 144, 0.1);
  --glow-1: rgba(45, 212, 191, 0.28);
  --glow-2: rgba(14, 116, 144, 0.2);
  --surface-glow-1: rgba(14, 116, 144, 0.1);
  --surface-glow-2: rgba(45, 212, 191, 0.1);
}

body[data-theme="night-ops"] {
  --bg: #111512;
  --bg-strong: #273229;
  --card: rgba(25, 32, 26, 0.92);
  --panel: rgba(30, 40, 31, 0.88);
  --ink: #e5eadb;
  --muted: #aab69b;
  --accent: #d36a38;
  --accent-2: #a9bd7c;
  --border: rgba(169, 189, 124, 0.28);
  --input-bg: rgba(13, 20, 15, 0.86);
  --shadow: rgba(3, 8, 4, 0.5);
  --button-muted: rgba(169, 189, 124, 0.12);
  --glow-1: rgba(105, 128, 68, 0.2);
  --glow-2: rgba(211, 106, 56, 0.14);
  --surface-glow-1: rgba(105, 128, 68, 0.14);
  --surface-glow-2: rgba(211, 106, 56, 0.1);
}

body[data-theme="desert-ops"] {
  --bg: #eee1c7;
  --bg-strong: #c9ad7d;
  --card: rgba(250, 243, 225, 0.88);
  --panel: rgba(244, 231, 202, 0.82);
  --ink: #35271d;
  --muted: #75624b;
  --accent: #a43f25;
  --accent-2: #7c692c;
  --border: rgba(124, 105, 44, 0.3);
  --input-bg: rgba(255, 249, 235, 0.9);
  --shadow: rgba(92, 61, 30, 0.2);
  --button-muted: rgba(124, 105, 44, 0.12);
  --glow-1: rgba(230, 174, 83, 0.3);
  --glow-2: rgba(164, 63, 37, 0.14);
  --surface-glow-1: rgba(164, 63, 37, 0.1);
  --surface-glow-2: rgba(230, 174, 83, 0.12);
}

body[data-theme="wardogs"] {
  --bg: #211812;
  --bg-strong: #5a3824;
  --card: rgba(45, 29, 20, 0.92);
  --panel: rgba(57, 36, 24, 0.9);
  --ink: #f3e5c7;
  --muted: #c4a477;
  --accent: #d65f32;
  --accent-2: #d8ae61;
  --border: rgba(216, 174, 97, 0.3);
  --input-bg: rgba(29, 19, 15, 0.9);
  --shadow: rgba(13, 7, 4, 0.55);
  --button-muted: rgba(216, 174, 97, 0.14);
  --glow-1: rgba(201, 148, 69, 0.28);
  --glow-2: rgba(110, 55, 31, 0.28);
  --surface-glow-1: rgba(201, 148, 69, 0.14);
  --surface-glow-2: rgba(110, 55, 31, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at top left, var(--glow-1), transparent 35%),
    radial-gradient(circle at bottom right, var(--glow-2), transparent 30%),
    linear-gradient(135deg, var(--bg), var(--bg-strong));
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink);
  transition: background 0.25s ease, color 0.25s ease;
}

.app {
  width: min(900px, 92vw);
  padding: 28px 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: 0 28px 60px var(--shadow);
  padding: 24px;
  backdrop-filter: blur(12px);
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: left;
}

.theme-toggle {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid var(--border);
}

.theme-btn {
  border: none;
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  background: transparent;
  color: var(--muted);
}

.theme-btn.active {
  background: var(--accent-2);
  color: white;
  box-shadow: 0 8px 18px rgba(29, 78, 216, 0.35);
}

.weapon-accordion {
  display: grid;
  gap: 14px;
}

.weapon-section {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.weapon-section summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--surface-glow-1), var(--surface-glow-2));
}

.weapon-section summary::-webkit-details-marker {
  display: none;
}

.weapon-section summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--muted);
}

.weapon-section[open] summary::after {
  content: '−';
}

.range-pill {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  color: var(--muted);
}

.weapon-content {
  padding: 16px 18px 18px;
}

.formula-box {
  background: linear-gradient(135deg, var(--surface-glow-1), var(--surface-glow-2));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 16px;
  margin-bottom: 18px;
}

.formula-label {
  display: block;
  font-size: 0.84rem;
  color: var(--muted);
}

.formula {
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  margin-top: 6px;
  font-weight: 700;
  color: var(--accent-2);
}

.form-grid {
  display: grid;
  gap: 18px;
}

.point-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.point-panel h2 {
  margin: 0 0 12px 0;
  font-size: 1.1rem;
}

.point-panel label {
  display: grid;
  grid-template-columns: 26px 1fr;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-weight: 600;
}

.coordinate-panel {
  grid-column: 1 / -1;
}

.coordinate-panel label {
  grid-template-columns: 1fr;
  gap: 8px;
}

.single-column-form {
  grid-template-columns: 1fr;
}

input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 1rem;
  background: var(--input-bg);
  color: var(--ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
  outline: none;
  border-color: rgba(59, 130, 246, 0.8);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.input-hint {
  grid-column: 1 / -1;
  margin: -6px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  background: rgba(148, 163, 184, 0.14);
  color: var(--ink);
}

button {
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, box-shadow 0.15s ease;
}

button:hover {
  transform: translateY(-1px);
}

.secondary-btn {
  background: var(--button-muted);
  color: var(--ink);
  border: 1px solid var(--border);
}

.primary-btn {
  background: var(--accent-2);
  color: white;
  box-shadow: 0 8px 18px rgba(29, 78, 216, 0.22);
}

.history-panel {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.history-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.history-heading h2 {
  margin: 0;
  font-size: 1rem;
}

.text-btn {
  padding: 4px 0;
  border: 0;
  background: transparent;
  color: var(--accent-2);
  font-size: 0.8rem;
}

.history-empty {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.history-empty[hidden] {
  display: none;
}

.history-list {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: rgba(148, 163, 184, 0.08);
  color: var(--ink);
  font-size: 0.82rem;
  text-align: left;
}

.history-item span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-item strong {
  flex: 0 0 auto;
  color: var(--accent);
}

.history-item:hover {
  border-color: var(--accent-2);
  transform: none;
}

.result-box {
  margin-top: 22px;
  border: 2px solid rgba(217, 45, 45, 0.8);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 92, 92, 0.1), rgba(255, 255, 255, 0.05));
  padding: 18px 16px;
  text-align: center;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.result-box.warning {
  border-color: #ff8a00;
  background: linear-gradient(135deg, rgba(255, 138, 0, 0.16), rgba(255, 255, 255, 0.05));
  box-shadow: 0 0 0 4px rgba(255, 138, 0, 0.12);
}

.result-label {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  color: var(--muted);
}

.result-value {
  margin-top: 8px;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--accent);
  text-shadow: 0 4px 16px rgba(217, 45, 45, 0.2);
}

.warning-text {
  margin-top: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #ff8a00;
}

.distance-relation {
  margin-top: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.mortar-result-box .range-meter-wrap {
  margin-top: 18px;
}

.mortar-meter-wrap .range-meter-labels {
  justify-content: space-between;
}

.range-meter-wrap {
  margin-top: 16px;
}

.range-meter-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.range-meter-track {
  position: relative;
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.15);
  border: 1px solid var(--border);
  overflow: hidden;
}

.range-meter-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, #22c55e, #f59e0b, #ef4444);
  box-shadow: 0 0 12px rgba(96, 165, 250, 0.3);
}

.range-meter-marker {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 2px;
  height: 18px;
  transform: translate(-50%, -50%);
  background: white;
  box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.7);
}

.warning-text.hidden {
  display: none;
}

.artillery-content {
  display: grid;
  gap: 12px;
}

.weapon-section[open] .artillery-content {
  display: grid;
}

.range-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border);
}

.range-status {
  margin-top: 6px;
  font-weight: 700;
  color: var(--muted);
}

.range-status.warning {
  color: #ff8a00;
}

.range-status.good {
  color: #16a34a;
}

@media (min-width: 680px) {
  .form-grid {
    grid-template-columns: repeat(2, minmax(220px, 1fr));
  }

  .actions {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .app {
    width: min(100% - 20px, 900px);
    padding: 10px 0;
  }

  .card {
    padding: 16px;
    border-radius: 16px;
  }

  .top-bar {
    align-items: flex-start;
  }

  .theme-toggle {
    width: 100%;
  }

  .theme-btn {
    flex: 1;
  }

  .weapon-section summary {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .range-pill {
    order: 3;
    width: 100%;
  }

  .actions > button {
    flex: 1 1 130px;
  }

  .history-item {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }
}