:root {
  --bg-1: #090816;
  --bg-2: #120e29;
  --panel: rgba(20, 18, 42, 0.88);
  --line: rgba(110, 240, 255, 0.28);
  --cyan: #71f6ff;
  --pink: #ff4fd8;
  --yellow: #ffd66b;
  --orange: #ff8a3d;
  --text: #f7f2ff;
  --muted: #c6bcf3;
  --ok: #82ffbc;
  --error: #ff8a9c;
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #2e1f59 0%, var(--bg-1) 45%, #05040d 100%);
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(113, 246, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(113, 246, 255, 0.08) 1px, transparent 1px);
  background-size: 34px 34px;
  transform: perspective(800px) rotateX(70deg) scale(1.4);
  transform-origin: center bottom;
  opacity: 0.25;
  pointer-events: none;
}

.page-shell {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 16px 48px;
  display: grid;
  gap: 18px;
}

.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.35), 0 0 20px rgba(113, 246, 255, 0.08);
  overflow: hidden;
}

.hero-panel::before,
.panel::after {
  content: '';
  position: absolute;
  inset: auto -20% -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--pink), var(--cyan), transparent);
  opacity: 0.75;
}

.kicker,
.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: var(--yellow);
}

h1, h2, p { margin-top: 0; }
h1 {
  margin-bottom: 10px;
  font-size: 2rem;
  line-height: 1.05;
  text-shadow: 0 0 10px rgba(255, 79, 216, 0.45);
}

h2 {
  margin-bottom: 10px;
  font-size: 1.5rem;
}

.lead, p { color: var(--muted); line-height: 1.5; }
.hero-glow {
  position: absolute;
  top: -40px;
  right: -20px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 79, 216, 0.4), transparent 70%);
  pointer-events: none;
}

.score-row,
.meta-row,
.admin-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.score-box,
.pill {
  border: 1px solid rgba(255, 214, 107, 0.35);
  background: rgba(255, 214, 107, 0.08);
  padding: 10px 14px;
  border-radius: 14px;
}

.score-label { display: block; color: var(--yellow); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; }
.score-value { display: block; font-size: 1.7rem; font-weight: 700; color: #fff; }

.primary-button,
.secondary-button,
.text-input {
  width: 100%;
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 1rem;
}

.primary-button,
.secondary-button {
  border: 0;
  color: #140b20;
  font-weight: 700;
  cursor: pointer;
}

.primary-button {
  background: linear-gradient(135deg, var(--yellow), var(--orange));
  box-shadow: 0 0 18px rgba(255, 214, 107, 0.28);
}

.secondary-button {
  background: linear-gradient(135deg, var(--cyan), #88a8ff);
}

.text-input {
  border: 1px solid rgba(113, 246, 255, 0.35);
  background: rgba(8, 10, 20, 0.75);
  color: var(--text);
}

.text-input::placeholder { color: #9389bd; }
.stack-gap { display: grid; gap: 12px; }
.status-message { min-height: 24px; margin: 12px 0 0; color: var(--cyan); }
.riddle-question { font-size: 1.1rem; color: var(--text); }
.hint-box {
  border-left: 4px solid var(--pink);
  background: rgba(255, 79, 216, 0.09);
  padding: 12px 14px;
  border-radius: 12px;
  margin-bottom: 14px;
  color: var(--text);
}
.scanner-wrapper { margin-top: 14px; display: grid; gap: 12px; }
#reader {
  width: 100%;
  background: rgba(0,0,0,0.45);
  border-radius: 18px;
  overflow: hidden;
  padding: 8px;
}
.table-wrapper { overflow-x: auto; }
.ranking-table { width: 100%; border-collapse: collapse; }
.ranking-table th, .ranking-table td {
  padding: 12px 10px;
  border-bottom: 1px solid rgba(113, 246, 255, 0.12);
  text-align: left;
}
.ranking-table th { color: var(--yellow); }
.compact-hero { padding-bottom: 16px; }
.admin-shell { max-width: 920px; }
.hidden { display: none !important; }
.success { color: var(--ok); }
.error { color: var(--error); }

@media (min-width: 768px) {
  .page-shell { padding-top: 32px; }
  .primary-button, .secondary-button { width: auto; min-width: 220px; }
  #registerForm, #answerForm { max-width: 420px; }
}