:root {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --accent1: #2563eb;
  --accent2: #0ea5e9;
  --text: #111827;
  --muted: #6b7280;
  --card: rgba(0,0,0,0.02);
  --border: rgba(0,0,0,0.08);
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(180deg, #e2e8f0, #f8fafc);
  color: var(--text);
  display: flex;
  justify-content: center;
  padding: 24px;
  min-height: 100vh;
}

.wrapper {
  width: 100%;
  max-width: 900px;
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  padding: 24px;
  border: 1px solid var(--border);
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  width: 48px; height: 48px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  color: white;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(14,165,233,0.4);
}

.brand h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 20px;
  color: var(--text);
  letter-spacing: 1px;
}

.hero {
  background: linear-gradient(90deg, rgba(37,99,235,0.08), rgba(14,165,233,0.06));
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
}

.hero h2 {
  font-size: 18px;
  margin-bottom: 4px;
  color: var(--text);
}

.hero p {
  color: var(--muted);
  font-size: 14px;
}

.services {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  transition: all 0.25s ease;
}

.service:hover {
  background: rgba(14,165,233,0.1);
  transform: translateY(-2px);
}

label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-weight: 600;
}

input[type="checkbox"] {
  width: 18px; height: 18px;
  accent-color: var(--accent1);
}

.price {
  color: var(--text);
  font-weight: 700;
}

.actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  flex-wrap: wrap;
  gap: 10px;
}

.total {
  font-size: 18px;
  font-weight: 700;
}

.btn {
  border: none;
  border-radius: 10px;
  padding: 12px 20px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  color: white;
  box-shadow: 0 8px 18px rgba(14,165,233,0.25);
}
.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(14,165,233,0.35);
}
.btn.secondary {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}

.leaderboard, .feedbacks {
  margin-top: 30px;
}

.leaderboard h3, .feedbacks h3 {
  margin-bottom: 10px;
  font-size: 16px;
  color: var(--text);
  border-left: 3px solid var(--accent1);
  padding-left: 8px;
}

.lb-item, .fb {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 8px;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.fb small {
  color: var(--muted);
  margin-top: 4px;
}

@media (max-width: 600px) {
  body { padding: 16px; }
  .wrapper { padding: 18px; }
  .hero h2 { font-size: 16px; }
  .hero p { font-size: 13px; }
  .brand h1 { font-size: 18px; }
  .total { font-size: 16px; }
  .btn { padding: 10px 14px; font-size: 14px; }
}

.payment_box {
  margin-top: 1rem;
  display: none;
}