:root {
  --purple: #69e2a0;
  --silver: #c0c0c0;
  --text-dark: #ffffff;
  --text-light: #121212;
  --glass-blur: 12px;
  --glass-border: rgba(255,255,255,0.2);
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #000000;

  background-size: cover;
  color: var(--text-dark);
  overflow-x: hidden;
  position: relative;
}

body.light { background-color: #f5f5f5; color: var(--text-light); }

header { text-align: center; margin-bottom: 20px; }
.logo { width: 150px; margin: 0 auto 10px; display: block; }
.main-heading { margin-bottom: 20px; color: #c0c0c0; }

.card {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  padding: 25px;
  margin: 20px auto;
  max-width: 500px;
  border-radius: 20px;
  transition: background 0.3s, color 0.3s;
  position: relative;
  overflow: hidden;
}

/* Subtle water-like overlay for glass cards */
.glass-card::before {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  top: -50%;
  left: -50%;
  background: radial-gradient(rgba(255,255,255,0.05), transparent 70%);
  pointer-events: none;
  animation: waterMove 12s linear infinite;
  border-radius: 50%;
}
@keyframes waterMove {
  0% { transform: translate(0,0); }
  50% { transform: translate(20px,10px); }
  100% { transform: translate(0,0); }
}

.input-group { margin: 15px 0; }
.input-group input,
.input-group select {
  width: 100%; /* uniform width */
  max-width: 100%;
  padding: 12px 15px;
  border-radius: 15px;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  color: inherit;
  display: block;
  box-sizing: border-box;
}

.input-group input:focus,
.input-group select:focus {
  border-color: var(--purple);
  outline: none;
}

.results p, .results li { font-size: 1.1em; margin: 10px 0; }
.lot-size { font-weight: bold; color: #39FF14; }

.note { font-size: 0.9em; color: var(--purple); text-align: center; }

.contact-btn { margin-right: 10px; margin-top: 5px; padding: 8px 15px; border-radius: 20px; background: var(--purple); color: #fff; border: none; cursor: pointer; }

/* Side floating buttons */
.side-toggle-buttons {
  position: fixed;
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 15px;
  z-index: 1000;
}

.side-btn {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.1);
  color: inherit;
  cursor: pointer;
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, background 0.3s;
}
.side-btn:hover { transform: scale(1.1); background: rgba(255,255,255,0.2); }

body.light .side-btn {
  border: 1px solid rgba(0,0,0,0.2);
  background: rgba(255,255,255,0.15);
}

/* WhatsApp icon inside button */
.whatsapp-icon { width: 24px; height: 24px; }

/* Particle Canvas */
#particleCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1; /* behind cards */
}