* { box-sizing: border-box; }
body {
  font-family: -apple-system, Segoe UI, Roboto, sans-serif;
  background: #1a1a1e;
  color: #eee;
  margin: 0;
  padding: 24px 16px 60px;
}
.wrap { max-width: 520px; margin: 0 auto; }
h1 { font-size: 20px; font-weight: 600; margin: 0 0 4px; }
.sub { color: #9a9a9f; font-size: 14px; margin: 0 0 20px; }
.panel {
  font-family: "SF Mono", Consolas, monospace;
  font-size: 13px;
  background: #232328;
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.row label { color: #9a9a9f; }
input[type=text], input:not([type]) {
  width: 64px;
  background: #1a1a1e;
  border: 1px solid #3a3a40;
  border-radius: 6px;
  color: #eee;
  padding: 4px 8px;
  font-family: inherit;
  font-size: 13px;
}
input:focus { outline: none; border-color: #5a8fdd; }
.err { color: #e2504a; font-size: 12px; display: none; }
.note { font-size: 12px; color: #7a7a80; margin: 2px 0 0; }
.stage {
  position: relative;
  width: 100%;
  height: 260px;
  background: #232328;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 16px;
}
.progress {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
}
.dot { width: 10px; height: 10px; border-radius: 50%; background: #3a3a40; }
.dot.on { background: #4caf6f; }
.msg {
  display: none;
  background: #1f3324;
  border: 1px solid #2f5a3a;
  color: #7fd99a;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
  margin-bottom: 16px;
}
a.btn, button.btn {
  display: inline-block;
  background: #2a2a30;
  border: 1px solid #3a3a40;
  color: #eee;
  padding: 8px 14px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 14px;
  cursor: pointer;
}
a.btn:hover, button.btn:hover { background: #34343a; }
.back { display: inline-block; margin-bottom: 16px; color: #9a9a9f; font-size: 13px; text-decoration: none; }
.locked { opacity: 0.4; pointer-events: none; }
.levelcard {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #232328;
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 10px;
  text-decoration: none;
  color: #eee;
}
.levelcard .status { font-size: 12px; color: #9a9a9f; }
.levelcard.done .status { color: #4caf6f; }

/* Code editor display */
.code {
  font-family: "SF Mono", Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
  background: #1e1e22;
  border: 1px solid #2f2f36;
  border-radius: 10px;
  padding: 16px 18px;
  margin-bottom: 16px;
  overflow-x: hidden;
  white-space: pre-wrap;
  word-break: break-word;
}
.code .kw { color: #c586c0; }
.code .fn { color: #5a8fdd; }
.code .cm { color: #6a6a72; font-style: italic; }
.code .pn { color: #ccc; }
.code .str { color: #ce9178; }
.code input.editval {
  font-family: inherit;
  font-size: 13px;
  background: #2a2a30;
  border: 1px solid #4a4a55;
  border-radius: 4px;
  color: #f0c674;
  padding: 0 5px;
  margin: 0 1px;
  width: 46px;
}
.code input.editval:focus { outline: none; border-color: #5a8fdd; background: #30303a; }
.code input.editval.wide { width: 70px; }
.err.inline { display: none; margin-left: 6px; }

.lesson {
  background: #1f2a33;
  border: 1px solid #2c4a5a;
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 16px;
  font-size: 13px;
  color: #cde3ee;
}
.lesson h4 { margin: 0 0 8px; font-size: 13px; color: #7fc4e8; text-transform: uppercase; letter-spacing: 0.5px; }
.lesson ul { margin: 0; padding-left: 18px; }
.lesson li { margin-bottom: 6px; }
.lesson li:last-child { margin-bottom: 0; }
.lesson code { background: #14202a; padding: 1px 5px; border-radius: 4px; color: #f0c674; }

.locked-card {
  background: #232328;
  border: 1px dashed #4a4a55;
  border-radius: 10px;
  padding: 16px;
  margin-top: 18px;
  text-align: center;
}
.locked-card p { margin: 0 0 10px; color: #9a9a9f; font-size: 13px; }
.locked-card .btn { background: #5a8fdd; border-color: #5a8fdd; color: #111; font-weight: 600; }
.locked-card .btn:hover { background: #6f9ee3; }

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.game-preview-card {
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  display: block;
  background: #14202e;
  border: 1px solid #2c5a8a;
}
.game-preview-card.locked { border: 1px dashed #3a3a40; opacity: 0.75; }
.game-preview-card .scene { width: 100%; height: 110px; display: block; background: #05143c; }
.game-preview-card .locked .scene { background: #1c1c22; }
.game-preview-card, .game-preview-card:visited, .game-preview-card:hover { color: inherit; text-decoration: none; }
.game-preview-card .info { padding: 10px 12px; }
.game-preview-card .name { font-size: 14px; font-weight: 600; color: #ffffff !important; margin-bottom: 2px; }
.game-preview-card .cta { font-size: 12px; color: #f0c674 !important; }
.game-preview-card.locked .cta { color: #8a8a90 !important; }