/* Base */
body {
  font-family: 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top left, #001f29, #0a2a33, #004d61);
  color: #e0e0e0;
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

/* Contenedor */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Barra superior */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.top-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

/* Header */
header {
  text-align: center;
  flex: 1;
}
header h1 {
  font-size: 2.5rem;
  background: linear-gradient(90deg, #00b7c2, #00ff99, #007a99);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 15px rgba(0,183,194,0.6);
  text-transform: uppercase;
  letter-spacing: 2px;
}
header p {
  color: #7fa99b;
  font-weight: 500;
}

/* Menú en mosaico */
.menu ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: 20px;
}
.menu li {
  flex: 1;
}
.menu a {
  display: block;
  padding: 30px;
  border-radius: 12px;
  background: linear-gradient(45deg, #004d61, #00b7c2);
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  text-transform: uppercase;
  border: 2px solid #00b7c2;
  transition: all 0.3s ease;
  font-size: 1.2rem;
}
.menu a:hover {
  transform: translateY(-4px);
  background: #00b7c2;
  color: #001f29;
  box-shadow: 0 6px 16px rgba(0,183,194,0.6);
}

/* Login y reloj */
.login, .clock {
  background: rgba(0, 77, 97, 0.2);
  border: 2px solid #004d61;
  padding: 15px;
  border-radius: 8px;
  margin-top: 10px;
  text-align: right;
}
.login h2, .clock h2 {
  color: #00b7c2;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.login input {
  display: block;
  margin: 5px 0;
  width: 200px;
}

/* Botones */
.btn {
  background: #004d61;
  color: #fff;
  border: 2px solid #00b7c2;
  padding: 10px 20px;
  margin-top: 5px;
  font-weight: bold;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s ease;
}
.btn:hover {
  background: #00b7c2;
  color: #001f29;
  box-shadow: 0 0 10px #00b7c2;
}
.btn i {
  margin-right: 8px;
  color: #00b7c2;
  transition: transform 0.2s ease;
}
.btn:hover i {
  transform: scale(1.2);
}

/* Barra inferior */
.bottom-bar {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
}
.contact, .message {
  background: rgba(0, 77, 97, 0.2);
  border: 2px solid #004d61;
  padding: 20px;
  border-radius: 8px;
  width: 45%;
}
.contact h2, .message h2 {
  color: #00b7c2;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.hero-image {
  display: block;          /* Permite usar margin auto */
  max-width: 80%;          /* Reduce el ancho para que no tape todo */
  height: auto;
  margin: 20px auto;       /* Centra horizontalmente */
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
}