body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: url('images/antenna.JPG') no-repeat center center fixed;
  background-size: cover;
  color: #e0e0e0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  z-index: 0;
}

header, .container, footer {
  position: relative;
  z-index: 1;
}

header {
  text-align: center;
  padding: 40px 20px;
  color: #00bcd4;
}

.logo {
  background-color: #00bcd4;
  color: #121212;
  font-weight: bold;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  line-height: 60px;
  text-align: center;
  font-size: 1.3em;
  margin: 0 auto 15px;
  box-shadow: 0 0 15px rgba(0,188,212,0.8);
}

.container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  padding: 20px 50px;
  gap: 20px;
  flex: 1;
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.btn {
  display: inline-block;
  padding: 15px 30px;
  background-color: rgba(0, 188, 212, 0.9);
  color: #121212;
  text-decoration: none;
  font-weight: bold;
  border-radius: 6px;
  transition: 0.2s;
  text-align: center;
  width: 200px;
  box-shadow: 0 0 15px rgba(0,188,212,0.3);
}
.btn:hover {
  background-color: #0097a7;
  box-shadow: 0 0 20px rgba(0,188,212,0.7);
}

.dashboard-mini {
  background-color: rgba(20, 20, 20, 0.85);
  border: 1px solid #333;
  border-radius: 10px;
  padding: 15px 25px;
  width: 320px;
  box-shadow: 0 0 20px rgba(0,188,212,0.25);
  text-align: center;
}

.dashboard-mini h2 {
  color: #00bcd4;
  text-align: center;
  margin-top: 0;
}

.stat {
  display: flex;
  justify-content: space-between;
  margin: 10px 0;
  font-size: 1.1em;
}

.rx, .tx {
  width: 80px;
  height: 30px;
  border-radius: 5px;
  text-align: center;
  line-height: 30px;
  font-weight: bold;
  color: #fff;
}

.rx.active {
  background-color: #4caf50;
  box-shadow: 0 0 10px #4caf50;
}
.tx.active {
  background-color: #f44336;
  box-shadow: 0 0 10px #f44336;
}

.activate-btn {
  margin-top: 20px;
  background-color: #4caf50;
  color: #fff;
  border: none;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: bold;
  cursor: pointer;
  width: 100%;
  transition: 0.3s;
}

.activate-btn:hover {
  background-color: #66bb6a;
  box-shadow: 0 0 15px rgba(76,175,80,0.7);
}

#timer {
  margin-top: 10px;
  font-size: 1.3em;
  color: #ffeb3b;
  font-weight: bold;
}

footer {
  text-align: center;
  padding: 15px;
  border-top: 1px solid #333;
  color: #ccc;
  font-size: 0.9em;
  background-color: rgba(15, 15, 15, 0.7);
}

footer a {
  color: #ffeb3b;
  text-decoration: none;
  font-weight: bold;
}
footer a:hover {
  text-decoration: underline;
  color: #fff176;
}