:root {
  --bg-1: #071318;
  --bg-2: #10222b;
  --panel: rgba(12, 26, 33, 0.86);
  --text: #ebf4f7;
  --muted: #9eb8c1;
  --accent: #34c2f8;
  --accent-2: #12e0a4;
  --danger: #ff6978;

  --bronze: #b86d3f;
  --silver: #c3d3de;
  --gold: #ffd95a;
  --platinum: #7ef7e0;
  --diamond: #63a0ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, #1a3f4f 0%, transparent 40%),
    radial-gradient(circle at 90% 0%, #1e2f6a 0%, transparent 35%),
    linear-gradient(170deg, var(--bg-1), var(--bg-2));
}

.page-noise {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 0);
  background-size: 3px 3px;
  pointer-events: none;
}

.hero,
main,
footer {
  position: relative;
  z-index: 1;
}

.hero {
  padding: 4rem 1.25rem 2.5rem;
  max-width: 980px;
  margin: 0 auto;
  text-align: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-2);
  margin: 0;
  font-size: 0.75rem;
}

h1 {
  margin: 0.4rem 0 0;
  font-size: clamp(2.2rem, 5vw, 3.9rem);
  line-height: 1.05;
}

.lead {
  margin: 1rem auto 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 1.08rem;
}

.cta-row {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  margin-top: 1.4rem;
  flex-wrap: wrap;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1rem 3rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(122, 166, 181, 0.25);
  border-radius: 14px;
  padding: 1rem;
  backdrop-filter: blur(6px);
}

.panel h2 {
  margin-top: 0;
}

.tiers {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.6rem;
}

.tier {
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 0.7rem;
  min-height: 108px;
}

.tier h4 {
  margin: 0;
  font-size: 1rem;
}

.tier p {
  margin: 0.3rem 0 0;
  color: #e8eff2;
  font-size: 0.85rem;
}

.tier.bronze { background: linear-gradient(150deg, rgba(184,109,63,0.35), rgba(184,109,63,0.1)); }
.tier.silver { background: linear-gradient(150deg, rgba(195,211,222,0.3), rgba(195,211,222,0.1)); }
.tier.gold { background: linear-gradient(150deg, rgba(255,217,90,0.28), rgba(255,217,90,0.08)); }
.tier.platinum { background: linear-gradient(150deg, rgba(126,247,224,0.28), rgba(126,247,224,0.1)); }
.tier.diamond { background: linear-gradient(150deg, rgba(99,160,255,0.3), rgba(99,160,255,0.1)); }

.btn {
  border: 0;
  border-radius: 10px;
  padding: 0.72rem 1.15rem;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #071318;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.score-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  flex-wrap: wrap;
}

.score-value {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 800;
}

.rank-pill {
  margin: 0;
  display: inline-block;
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.14);
}

.muted {
  color: var(--muted);
  margin: 0;
}

.progress-wrap {
  margin: 0.8rem 0 1rem;
}

.progress-track {
  margin-top: 0.4rem;
  height: 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  transition: width 260ms ease;
}

.kv-list,
.list {
  margin: 0.5rem 0 0;
  padding-left: 1rem;
}

.state-note {
  color: var(--muted);
}

.error-banner {
  margin: 0 0 0.75rem;
  border: 1px solid rgba(255, 105, 120, 0.4);
  background: rgba(255, 105, 120, 0.16);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  color: #ffe3e6;
}

.retry-row {
  margin-bottom: 0.75rem;
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.issue-card {
  margin: 1rem 0;
  border-top: 1px dashed rgba(255, 255, 255, 0.25);
  padding-top: 0.9rem;
}

.issue-card label {
  display: block;
  margin: 0.5rem 0;
  color: var(--muted);
}

.issue-card input {
  margin-top: 0.2rem;
  width: 100%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
  border-radius: 8px;
  padding: 0.55rem 0.6rem;
}

.token-output {
  width: 100%;
  min-height: 100px;
  margin-top: 0.6rem;
  background: #0d1820;
  color: #d4edf5;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 0.6rem;
}

.mono {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}

.hidden {
  display: none !important;
}

footer {
  text-align: center;
  padding: 1rem 1rem 2rem;
  color: var(--muted);
}

@media (max-width: 850px) {
  .tiers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .tiers {
    grid-template-columns: 1fr;
  }
}