:root {
  --rr-deep:    #1e4d6b;
  --rr-teal:    #2ec4b6;
  --rr-bg:      #f6f8fb;
  --rr-card:    #ffffff;
  --rr-text:    #15293a;
  --rr-muted:   #6b7c8c;
  --rr-border:  #dde5ee;
  --rr-danger:  #c0392b;
  --rr-radius:  10px;
  --rr-shadow:  0 1px 2px rgba(21,41,58,.06), 0 8px 24px rgba(21,41,58,.06);
  --rr-font:    system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--rr-bg);
  color: var(--rr-text);
  font-family: var(--rr-font);
  line-height: 1.5;
}

.topbar {
  border-bottom: 1px solid var(--rr-border);
  background: white;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  text-decoration: none;
  color: var(--rr-deep);
}
.brand img { display: block; }
.brand-name {
  font-weight: 700;
  font-size: 18px;
}
.brand-tag {
  color: var(--rr-muted);
  font-size: 13px;
  margin-left: 6px;
}

.page {
  max-width: 640px;
  margin: 40px auto;
  padding: 0 16px;
}

.card {
  background: var(--rr-card);
  border-radius: var(--rr-radius);
  box-shadow: var(--rr-shadow);
  padding: 32px;
}
.card.center { text-align: center; }
.card h1 {
  margin: 0 0 12px;
  font-size: 24px;
  color: var(--rr-deep);
}
.lede {
  color: var(--rr-muted);
  margin-bottom: 24px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.stack label {
  font-weight: 600;
  font-size: 14px;
}
.stack input[type="number"],
.stack input[type="text"] {
  padding: 10px 12px;
  font-size: 16px;
  border: 1px solid var(--rr-border);
  border-radius: 8px;
  font-family: var(--rr-font);
}
.stack input:focus {
  outline: none;
  border-color: var(--rr-teal);
  box-shadow: 0 0 0 3px rgba(46,196,182,.18);
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--rr-border);
  background: white;
  color: var(--rr-deep);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  font-family: var(--rr-font);
  font-size: 15px;
}
.btn:hover { border-color: var(--rr-teal); }
.btn.primary {
  background: var(--rr-teal);
  border-color: var(--rr-teal);
  color: white;
}
.btn.primary:hover { background: #25a89c; border-color: #25a89c; }

.share {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 16px 0 24px;
  flex-wrap: wrap;
}
.share label {
  flex-basis: 100%;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}
.share input {
  flex: 1 1 320px;
  padding: 10px 12px;
  border: 1px solid var(--rr-border);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  background: var(--rr-bg);
  color: var(--rr-deep);
}

.status {
  font-size: 15px;
  color: var(--rr-muted);
  padding: 12px 0;
  border-top: 1px solid var(--rr-border);
  border-bottom: 1px solid var(--rr-border);
  margin-bottom: 16px;
}
.status #count { font-weight: 700; color: var(--rr-deep); }

.submissions {
  list-style: none;
  padding: 0;
  margin: 0;
}
.submissions li {
  padding: 12px 0;
  border-bottom: 1px solid var(--rr-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  animation: rr-fadein .2s ease;
}
.submissions li:last-child { border-bottom: 0; }
.submissions .name { font-weight: 600; color: var(--rr-deep); }
.submissions time { color: var(--rr-muted); font-size: 13px; }

@keyframes rr-fadein {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: none; }
}

.banner {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 8px;
  background: #eef9f7;
  color: var(--rr-deep);
  border: 1px solid #cdebe6;
}
.banner.hidden, .hidden { display: none; }

.footnote {
  margin-top: 24px;
  color: var(--rr-muted);
  font-size: 13px;
}

.bottom {
  max-width: 640px;
  margin: 40px auto;
  padding: 0 16px 32px;
  text-align: center;
  color: var(--rr-muted);
  font-size: 13px;
}