:root {
  --bg: #050b12;
  --panel: rgba(7, 18, 31, 0.76);
  --panel-strong: #091522;
  --border: #263f5e;
  --border-soft: rgba(55, 83, 119, 0.62);
  --text: #eaf1ff;
  --text-dim: #8295b0;
  --amber: #ffb020;
  --cyan: #2ce0ff;
  --green: #50e39a;
  --coral: #ff7584;
  --wind: #9ab8e8;
  --red: #ff5d67;
  --font-display: 'Rajdhani', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

* { box-sizing: border-box; }

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  -webkit-tap-highlight-color: transparent;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

[hidden] {
  display: none !important;
}

.arcade-nav {
  position: relative;
  z-index: 20;
  width: 100%;
  min-height: 76px;
  padding: 0 clamp(18px, 5vw, 72px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid rgba(255, 176, 32, 0.25);
  background: rgba(5, 24, 35, 0.96);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
}

.arcade-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  white-space: nowrap;
}

.arcade-brand img {
  display: block;
  width: 78px;
  height: auto;
  filter: drop-shadow(0 0 8px rgba(44, 224, 255, 0.25));
}

.arcade-brand strong {
  color: var(--amber);
}

.all-missions {
  min-height: 38px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border: 1px solid rgba(255, 176, 32, 0.5);
  border-radius: 4px;
  background: rgba(255, 176, 32, 0.08);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.all-missions:hover,
.all-missions:focus-visible {
  color: #161000;
  background: var(--amber);
  box-shadow: 0 0 20px rgba(255, 176, 32, 0.3);
  outline: 0;
}

.app-stage {
  position: relative;
  min-height: calc(100vh - 76px);
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 45% 20%, rgba(31, 139, 174, 0.14), transparent 31%),
    linear-gradient(180deg, rgba(6, 29, 42, 0.58), transparent 44%),
    var(--bg);
}

.app-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(44, 224, 255, 0.17) 1px, transparent 1px),
    linear-gradient(90deg, rgba(44, 224, 255, 0.17) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 78% 65% at 50% 34%, black 4%, transparent 79%);
}

.app-stage::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 90px;
  left: 39%;
  width: min(76vw, 880px);
  aspect-ratio: 1;
  transform: translateX(-50%);
  border-radius: 50%;
  opacity: 0.18;
  background:
    repeating-radial-gradient(circle, transparent 0 92px, rgba(44, 224, 255, 0.2) 93px 94px),
    conic-gradient(from 0deg, transparent 0 24.5%, rgba(255, 176, 32, 0.18) 25% 25.3%, transparent 25.5% 49.5%, rgba(44, 224, 255, 0.14) 50% 50.3%, transparent 50.5% 74.5%, rgba(44, 224, 255, 0.14) 75% 75.3%, transparent 75.5%);
  mask-image: radial-gradient(circle, black 0 48%, transparent 74%);
}

.app {
  position: relative;
  z-index: 1;
  width: min(100%, 1280px);
  margin: 0 auto;
  padding: 34px 24px 58px;
}

.app-header {
  text-align: center;
}

.mission-id,
.panel-kicker {
  margin: 0;
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.57rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.app-header h1 {
  max-width: 850px;
  margin: 8px auto 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--cyan);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  letter-spacing: 0.11em;
  text-transform: uppercase;
  text-shadow: 0 0 14px rgba(44, 224, 255, 0.32);
}

.brand-hair {
  flex: 1;
  max-width: 95px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(44, 224, 255, 0.48));
}

.brand-hair:last-child {
  background: linear-gradient(90deg, rgba(44, 224, 255, 0.48), transparent);
}

.subtitle {
  margin: 7px 0 0;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.lab-modes {
  width: fit-content;
  margin: 24px auto 22px;
  display: flex;
  gap: 8px;
  padding: 4px;
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  background: rgba(5, 14, 24, 0.72);
}

.mode-btn {
  min-height: 38px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  cursor: pointer;
}

.mode-btn.active {
  color: #171000;
  border-color: var(--amber);
  background: linear-gradient(180deg, #ffd06b, var(--amber));
  box-shadow: 0 0 15px rgba(255, 176, 32, 0.3);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(340px, 0.85fr);
  gap: 22px;
  align-items: start;
}

.display-panel,
.control-panel > section {
  border: 1px solid var(--border-soft);
  background: var(--panel);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(8px);
}

.display-panel {
  padding: 18px;
}

.display-topline,
.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.display-topline h2,
.panel-heading h2 {
  margin: 3px 0 0;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
}

.drag-hint {
  margin: 4px 0 0;
  color: var(--coral);
  font-family: var(--font-mono);
  font-size: 0.57rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.canvas-shell {
  position: relative;
  margin-top: 14px;
  overflow: hidden;
  border: 1px solid #294563;
  border-radius: 5px;
  background: #06101b;
  box-shadow: inset 0 0 55px rgba(0, 0, 0, 0.38), 0 0 22px rgba(44, 224, 255, 0.06);
}

#vector-canvas {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  min-height: 340px;
  touch-action: none;
  cursor: crosshair;
}

.canvas-readout {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 8px;
  pointer-events: none;
}

.canvas-readout span {
  padding: 5px 7px;
  border: 1px solid #28435f;
  background: rgba(5, 15, 26, 0.88);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
}

.canvas-readout strong {
  color: var(--text);
}

.success-burst {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 230px;
  padding: 14px 18px;
  border: 1px solid var(--green);
  background: rgba(5, 22, 26, 0.95);
  color: var(--green);
  text-align: center;
  box-shadow: 0 0 30px rgba(80, 227, 154, 0.3);
  pointer-events: none;
  transform: translate(-50%, -50%);
  animation: capture-pop 1.8s ease-out forwards;
}

.success-burst strong,
.success-burst span {
  display: block;
}

.success-burst strong {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.11em;
}

.success-burst span {
  margin-top: 4px;
  color: var(--text-dim);
  font-size: 0.74rem;
}

@keyframes capture-pop {
  0% { opacity: 0; transform: translate(-50%, -44%) scale(0.88); }
  12%, 76% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -57%) scale(0.97); }
}

.vector-deck {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.vector-card {
  min-width: 0;
  padding: 10px;
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) auto;
  align-items: center;
  gap: 9px;
  border: 1px solid #263d59;
  border-radius: 4px;
  background: rgba(8, 21, 35, 0.72);
  text-align: left;
  cursor: pointer;
  transition: opacity 0.18s, border-color 0.18s, background 0.18s;
}

.vector-card:not(.active) {
  opacity: 0.42;
}

.vector-card:focus-visible {
  outline: 1px solid currentColor;
  outline-offset: 2px;
}

.vector-swatch {
  width: 18px;
  height: 3px;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
}

.vector-card span:nth-child(2) {
  min-width: 0;
}

.vector-card strong,
.vector-card small {
  display: block;
}

.vector-card strong {
  font-family: var(--font-mono);
  font-size: 0.59rem;
  letter-spacing: 0.08em;
}

.vector-card small {
  margin-top: 2px;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 0.68rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vector-card b {
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.vector-card.heading { color: var(--amber); }
.vector-card.track { color: var(--cyan); }
.vector-card.course { color: var(--green); }
.vector-card.bearing { color: var(--coral); }

.control-panel {
  display: grid;
  gap: 12px;
}

.control-panel > section {
  padding: 18px;
}

.reset-scene,
.new-scenario {
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid rgba(255, 176, 32, 0.42);
  border-radius: 3px;
  background: rgba(255, 176, 32, 0.07);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.control-stack {
  margin-top: 17px;
  display: grid;
  gap: 15px;
}

.control {
  display: block;
}

.control > span {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.control strong {
  font-size: 0.84rem;
  letter-spacing: 0.03em;
}

.control output {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
}

.control small {
  display: block;
  margin-top: 1px;
  color: var(--text-dim);
  font-size: 0.68rem;
}

.control input[type="range"] {
  --range-color: var(--amber);
  width: 100%;
  height: 4px;
  margin: 10px 0 0;
  appearance: none;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--range-color) var(--range-progress, 0%), #23364f var(--range-progress, 0%));
  outline: none;
}

.control input[type="range"]::-webkit-slider-thumb {
  width: 17px;
  height: 17px;
  appearance: none;
  border: 2px solid #07111d;
  border-radius: 50%;
  background: var(--range-color);
  box-shadow: 0 0 10px color-mix(in srgb, var(--range-color) 60%, transparent);
  cursor: ew-resize;
}

.control input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: 2px solid #07111d;
  border-radius: 50%;
  background: var(--range-color);
  box-shadow: 0 0 10px color-mix(in srgb, var(--range-color) 60%, transparent);
  cursor: ew-resize;
}

.heading-control input { --range-color: var(--amber) !important; }
.course-control input { --range-color: var(--green) !important; }
.wind-control input { --range-color: var(--wind) !important; }
.speed-control input { --range-color: var(--cyan) !important; }

.challenge-copy {
  margin: 15px 0;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.5;
}

.assignment-strip,
.challenge-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
  background: rgba(4, 13, 23, 0.66);
}

.assignment-strip span,
.challenge-stats span {
  min-width: 0;
  padding: 10px 7px;
  text-align: center;
}

.assignment-strip span + span,
.challenge-stats span + span {
  border-left: 1px solid var(--border);
}

.assignment-strip span {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.51rem;
  letter-spacing: 0.08em;
}

.assignment-strip strong {
  display: block;
  margin-top: 4px;
  color: var(--text);
  font-size: 0.68rem;
}

.challenge-heading {
  margin-top: 22px;
}

.capture-meter {
  margin-top: 20px;
}

.capture-track {
  position: relative;
  height: 8px;
  overflow: hidden;
  border: 1px solid #28425e;
  background:
    linear-gradient(90deg, transparent 49.5%, rgba(80, 227, 154, 0.85) 49.5% 50.5%, transparent 50.5%),
    #091625;
}

.capture-track span {
  position: absolute;
  top: 0;
  left: 50%;
  width: 10px;
  height: 100%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  transform: translateX(-50%);
  transition: left 0.12s;
}

.capture-meter p {
  margin: 7px 0 0;
  color: var(--text-dim);
  font-size: 0.7rem;
  text-align: center;
}

.challenge-stats {
  margin-top: 16px;
}

.challenge-stats small,
.challenge-stats strong {
  display: block;
}

.challenge-stats small {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.09em;
}

.challenge-stats strong {
  margin-top: 3px;
  color: var(--cyan);
  font-family: var(--font-mono);
}

.relationship-panel {
  border-left: 2px solid var(--cyan) !important;
}

.relationship-panel > p:last-child {
  margin: 8px 0 0;
  color: #aab8cb;
  font-size: 0.78rem;
  line-height: 1.5;
}

.app-footer {
  margin-top: 22px;
  padding-top: 14px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid rgba(45, 70, 99, 0.55);
  color: #657a97;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.04em;
}

.app-footer p {
  margin: 0;
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .control-panel {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.62fr);
    align-items: start;
  }

  .control-panel > section:first-child {
    grid-row: span 2;
  }

  .app-stage::after {
    left: 50%;
  }
}

@media (max-width: 680px) {
  .arcade-nav {
    min-height: 68px;
    padding: 0 14px;
  }

  .arcade-brand {
    gap: 8px;
    font-size: 0.61rem;
    letter-spacing: 0.2em;
  }

  .arcade-brand img {
    width: 58px;
  }

  .all-missions {
    padding: 0 10px;
    font-size: 0.58rem;
  }

  .app {
    padding: 22px 10px 42px;
  }

  .app-header h1 {
    font-size: 1.12rem;
  }

  .brand-hair {
    max-width: 30px;
  }

  .lab-modes {
    width: 100%;
    margin: 19px auto 14px;
  }

  .mode-btn {
    flex: 1;
    padding: 0 8px;
  }

  .display-panel,
  .control-panel > section {
    padding: 12px;
  }

  .display-topline h2 {
    font-size: 1.02rem;
  }

  #vector-canvas {
    min-height: 300px;
    aspect-ratio: 1 / 1;
  }

  .canvas-readout {
    top: 8px;
    left: 8px;
  }

  .vector-deck {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .vector-card {
    padding: 8px 7px;
    grid-template-columns: 12px minmax(0, 1fr) auto;
    gap: 5px;
  }

  .vector-swatch {
    width: 12px;
  }

  .vector-card strong {
    font-size: 0.52rem;
    letter-spacing: 0.04em;
  }

  .vector-card small {
    display: none;
  }

  .vector-card b {
    font-size: 0.58rem;
  }

  .control-panel {
    grid-template-columns: 1fr;
  }

  .control-panel > section:first-child {
    grid-row: auto;
  }

  .app-footer {
    flex-direction: column;
    gap: 7px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}