:root {
  color-scheme: dark;
  --font-display: "Baloo 2", "Trebuchet MS", "Arial Rounded MT Bold", sans-serif;
  --font-body: Inter, "Segoe UI", Tahoma, Arial, sans-serif;

  --space-1: 0.35rem;
  --space-2: 0.65rem;
  --space-3: 0.9rem;
  --space-4: 1.2rem;
  --space-5: 1.6rem;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;

  --bg-top: #11244c;
  --bg-mid: #1a2f5f;
  --bg-bottom: #28113f;
  --panel: #1f2f63;
  --panel-soft: #253973;
  --panel-border: #7bc5ff;
  --text: #f4fbff;
  --muted: #c9defc;
  --accent: #ffd35a;
  --accent-2: #7ef0ff;
  --good: #73f3a7;
  --danger: #ff8f95;
  --chip-bg: rgba(126, 240, 255, 0.16);
  --shadow: 0 14px 36px rgba(3, 8, 24, 0.46);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 16% 18%, rgba(255, 255, 255, 0.22) 0 2px, transparent 2px 100%),
    radial-gradient(circle at 82% 10%, rgba(255, 255, 255, 0.2) 0 1.5px, transparent 1.5px 100%),
    radial-gradient(circle at 68% 66%, rgba(126, 240, 255, 0.12), transparent 45%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 50%, var(--bg-bottom) 100%);
  color: var(--text);
}

.game-shell {
  width: min(1000px, 100vw);
  margin: 0 auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
}

.controls {
  background: linear-gradient(155deg, rgba(31, 47, 99, 0.95), rgba(21, 33, 73, 0.95));
  border: 1px solid color-mix(in srgb, var(--panel-border) 62%, #1c2f61);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow);
  flex: 0 0 auto;
}

.canvas-wrap {
  margin: var(--space-4) 0;
  border: 2px solid color-mix(in srgb, var(--panel-border) 70%, #1f2f62);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(123, 197, 255, 0.22), 0 22px 44px rgba(2, 8, 28, 0.46);
}

canvas {
  width: 100%;
  display: block;
  background: #263e7f;
}

.controls {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.35;
}

.controls strong {
  color: var(--accent);
  font-family: var(--font-display);
  letter-spacing: 0.01em;
}

.hidden {
  display: none;
}

.intel-modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: var(--space-4);
}

.intel-modal[hidden] {
  display: none;
}

.intel-modal__backdrop {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(3, 7, 22, 0.72), rgba(10, 8, 28, 0.8));
}

.intel-modal__panel {
  position: relative;
  width: min(980px, 96vw);
  max-height: min(88vh, 920px);
  overflow: auto;
  background: linear-gradient(160deg, rgba(37, 57, 115, 0.98), rgba(24, 38, 87, 0.98));
  border: 1px solid color-mix(in srgb, var(--panel-border) 65%, #243772);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-5) var(--space-4);
  box-shadow: 0 22px 56px rgba(2, 8, 25, 0.6);
}

.intel-modal__panel h2 {
  margin: 0 42px var(--space-2) 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 2.25rem);
  color: var(--accent);
}

.intel-modal__panel p {
  margin: 0 0 var(--space-3);
  color: var(--text);
  font-size: 1.01rem;
}

.intel-modal__panel ul {
  margin: 0 0 var(--space-3);
  padding-left: 1.35rem;
  color: var(--muted);
  line-height: 1.4;
}

.intel-modal__body {
  display: grid;
  grid-template-columns: minmax(0, 330px) minmax(0, 1fr);
  gap: 16px;
}

.intel-modal__media {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.intel-modal__image {
  width: 100%;
  min-height: 220px;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--panel-border) 68%, #243a75);
  background: #283e7d;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.intel-modal__video {
  display: grid;
  gap: var(--space-1);
}

.intel-modal__video-embed {
  position: relative;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--panel-border) 68%, #243a75);
  background: rgba(12, 24, 58, 0.95);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.intel-modal__video-embed::before {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.intel-modal__video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.intel-modal__video-fallback {
  margin: 0;
  padding: 0.45rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px dashed color-mix(in srgb, var(--panel-border) 65%, #223970);
  background: rgba(24, 40, 84, 0.85);
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

.intel-modal__details {
  margin: 0 0 12px;
  display: grid;
  gap: var(--space-1);
}

.intel-modal__details > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-2);
  margin: 0;
  background: rgba(126, 240, 255, 0.08);
  border: 1px solid color-mix(in srgb, var(--panel-border) 45%, #1f3468);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.65rem;
}

.intel-modal__details dt {
  color: var(--muted);
  font-weight: 700;
}

.intel-modal__details dd {
  margin: 0;
  font-weight: 600;
}

.intel-modal__subhead {
  margin: var(--space-3) 0 var(--space-1);
  color: var(--accent-2);
  font-size: 1.1rem;
  font-family: var(--font-display);
}

.intel-modal__source {
  font-size: 0.9rem;
  color: var(--muted);
}

.intel-modal__quiz {
  margin: var(--space-3) 0;
  padding: 0.7rem;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--panel-border) 48%, #243b76);
  background: rgba(126, 240, 255, 0.08);
}

.intel-modal__quiz-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.intel-modal__quiz-option {
  border: 1px solid color-mix(in srgb, var(--panel-border) 56%, #2a407e);
  background: rgba(20, 34, 78, 0.95);
  color: var(--text);
  border-radius: 999px;
  padding: 0.42rem 0.88rem;
  font: 700 0.95rem var(--font-body);
  cursor: pointer;
}

.intel-modal__quiz-option:hover {
  background: rgba(255, 211, 90, 0.2);
}

.intel-modal__quiz-feedback {
  margin: 0;
  min-height: 1.2em;
  font-weight: 700;
}

.intel-modal__quiz-feedback--error {
  color: var(--danger);
}

.intel-modal__quiz-feedback--success {
  color: var(--good);
}

.intel-modal__source a {
  color: #b9f5ff;
}

.intel-modal__close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  border: 1px solid color-mix(in srgb, var(--panel-border) 60%, #2a3f7d);
  background: rgba(126, 240, 255, 0.15);
  color: var(--text);
  border-radius: 999px;
  cursor: pointer;
  width: 36px;
  height: 36px;
  font-size: 24px;
  line-height: 1;
}

.intel-modal__close:hover {
  background: rgba(255, 211, 90, 0.18);
}

@media (max-width: 800px) {
  .game-shell {
    padding: var(--space-3);
  }

  .controls {
    padding: var(--space-3);
  }

  .intel-modal__body {
    grid-template-columns: 1fr;
  }

  .intel-modal__details > div {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}