:root {
  --bg: #07111f;
  --panel: rgba(7, 17, 31, 0.84);
  --panel-strong: rgba(13, 26, 48, 0.94);
  --accent: #7fffd4;
  --accent-2: #ffcf5a;
  --danger: #ff6b6b;
  --ink: #eff7ff;
  --grid: rgba(127, 255, 212, 0.1);
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 18px 0;
  background:
    radial-gradient(circle at top, rgba(127, 255, 212, 0.12), transparent 30%),
    radial-gradient(circle at bottom, rgba(255, 207, 90, 0.1), transparent 22%),
    linear-gradient(180deg, #040913 0%, #07111f 48%, #040913 100%);
  color: var(--ink);
  font-family: "Trebuchet MS", "Gill Sans", sans-serif;
  overflow: auto;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  opacity: 0.4;
}

.shell {
  width: min(96vw, 980px);
  padding: 18px;
  border: 1px solid rgba(127, 255, 212, 0.24);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.titlebar,
.footerbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.title {
  margin: 0;
  font-family: "Copperplate", "Palatino Linotype", serif;
  font-size: clamp(1.4rem, 4vw, 2.4rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.subtitle {
  margin: 4px 0 0;
  color: rgba(239, 247, 255, 0.72);
  font-size: 0.95rem;
}

.hud {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 18px 0 14px;
}

.card {
  border: 1px solid rgba(127, 255, 212, 0.18);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
}

.label {
  display: block;
  color: rgba(239, 247, 255, 0.62);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}

.value {
  font-size: clamp(1rem, 2.8vw, 1.5rem);
  font-weight: 700;
}

.arena {
  position: relative;
  border-radius: 24px;
  overflow: auto;
  border: 1px solid rgba(127, 255, 212, 0.2);
  background:
    radial-gradient(circle at 50% 15%, rgba(127, 255, 212, 0.08), transparent 32%),
    linear-gradient(180deg, rgba(17, 34, 61, 0.96), rgba(5, 11, 20, 0.98));
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 18px;
  overflow-y: auto;
  background: rgba(3, 7, 15, 0.74);
  text-align: center;
}

.overlay.hidden {
  display: none;
}

 .panel {
  width: min(100%, 700px);
  max-height: calc(100% - 4px);
  padding: 26px;
  border-radius: 24px;
  border: 1px solid rgba(127, 255, 212, 0.24);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.panel h2,
.panel p {
  margin-top: 0;
}

.panel h2 {
  margin-bottom: 10px;
  font-family: "Copperplate", "Palatino Linotype", serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.panel p {
  color: rgba(239, 247, 255, 0.82);
  line-height: 1.5;
}

.pill-row,
.diploma-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 18px 0;
}

.pill,
.metric {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  font-size: 0.95rem;
}

.metric strong {
  color: var(--accent-2);
  margin-left: 6px;
}

.actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

button {
  border: none;
  border-radius: 999px;
  padding: 12px 20px;
  font: inherit;
  font-weight: 700;
  color: #031019;
  background: linear-gradient(135deg, var(--accent) 0%, #b9fff0 100%);
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease;
  box-shadow: 0 10px 24px rgba(127, 255, 212, 0.24);
}

button.secondary {
  background: linear-gradient(135deg, #ffcf5a 0%, #ffe8a0 100%);
  box-shadow: 0 10px 24px rgba(255, 207, 90, 0.2);
}

button:active {
  transform: translateY(1px) scale(0.99);
}

.touch-controls {
  display: none;
  gap: 12px;
  justify-content: center;
  margin-top: 16px;
}

.touch-controls button {
  min-width: 88px;
  padding: 14px 18px;
}

.footerbar {
  margin-top: 14px;
  color: rgba(239, 247, 255, 0.68);
  font-size: 0.9rem;
}

.diploma {
  position: relative;
  overflow: auto;
  border: 1px solid rgba(255, 207, 90, 0.28);
  background:
    radial-gradient(circle at top right, rgba(255, 207, 90, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(23, 29, 42, 0.95), rgba(10, 14, 23, 0.98));
}

.diploma::before,
.diploma::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 207, 90, 0.3);
  inset: 12px;
  border-radius: 18px;
  pointer-events: none;
}

.diploma::after {
  inset: 22px;
  border-color: rgba(127, 255, 212, 0.18);
}

.rank {
  display: inline-block;
  margin: 10px 0 16px;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255, 207, 90, 0.12);
  border: 1px solid rgba(255, 207, 90, 0.3);
  font-family: "Copperplate", "Palatino Linotype", serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#diplomaCanvas {
  width: 100%;
  max-width: 500px;
  margin: 0 auto 8px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: linear-gradient(180deg, rgba(255, 249, 227, 0.94), rgba(230, 216, 176, 0.98));
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.24);
}

.copy-status {
  min-height: 1.4em;
  margin-bottom: 0;
  color: rgba(239, 247, 255, 0.74);
}

@media (max-width: 720px) {
  .shell {
    padding: 14px;
    border-radius: 20px;
  }

  .hud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .touch-controls {
    display: flex;
  }

  .footerbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .panel {
    padding: 20px;
  }
}