/* ==== GLOBAL ==== */
body {
  margin: 0;
  background: linear-gradient(135deg, #e9fff1 0%, #d8ffea 45%, #ccffe3 100%);
  font-family: "Inter", Arial, sans-serif;
  color: #10472b;
  text-align: center;
}

/* ==== TITLE ==== */
.title {
  margin: 28px 0 18px;
  font-size: 38px;
  font-weight: 800;
  letter-spacing: 1px;
  background: linear-gradient(90deg, #009e44, #00c661);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==== GRID WRAPPER ==== */
.dashboard {
  display: grid;
  grid-template-columns: repeat(3, minmax(280px, 1fr));
  gap: 26px;
  width: 88%;
  margin: auto;
  padding-bottom: 30px;
}

/* ==== SENSOR CARD ==== */
.card {
  background: rgba(255, 255, 255, 0.65);
  padding: 26px;
  border-radius: 18px;
  font-size: 23px;
  box-shadow: 0 12px 24px rgba(0, 88, 29, 0.13);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.75);
  transition: 0.32s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 35px rgba(0, 111, 45, 0.26);
}

/* ==== HIGHLIGHT CARDS ==== */
.status {
  border-left: 6px solid #00a84e;
  background: rgba(0, 168, 78, 0.10);
}

.buzzer {
  border-left: 6px solid #d42f2f;
  background: rgba(212, 47, 47, 0.12);
}

/* ==== SIMULATE BUTTON ==== */
#simulateBtn {
  margin-top: 35px;
  padding: 16px 44px;
  border-radius: 14px;
  font-size: 21px;
  font-weight: 700;
  border: none;
  background: linear-gradient(135deg, #00c76d, #009647);
  color: #fff;
  cursor: pointer;
  letter-spacing: 0.4px;
  transition: 0.25s ease;
  box-shadow: 0 6px 18px rgba(0, 155, 74, 0.35);
}

#simulateBtn:hover {
  transform: translateY(-4px);
  background: linear-gradient(135deg, #55e896, #45c46f);
  box-shadow: 0 10px 26px rgba(0, 155, 74, 0.55);
}