body {
    background-image: url("BGRADIO.jpeg");
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    font-family: 'Share Tech', sans-serif;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #2c2c2c;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("BGRADIO.jpeg");
    background-size: cover;
    background-position: center;
    filter: blur(2px);
    z-index: -1;
}
.navbar {
    display: flex;
    justify-content: space-between; /* kiri-kanan */
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px; /* sesuaikan */
    background-color: rgba(73, 61, 51, 0.9);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    backdrop-filter: blur(10);
    padding: 0 20px;
    z-index: 100;
}

.navbar .left h1 {
    color: #f0ad4e;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0;
}

.navbar .right.icon {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    height: 40px;
}

.navbar .right.icon {
    height: 100%;
    width: auto;
    display: block;
    filter: drop-shadow(0 0 5px rgba(239, 131, 80, 0.5));
}

.navbar .right.icon #osis {
    height: 100%;
}

.navbar .right.icon #it {
    height: 100%;
}


footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px; /* sesuaikan */
    background-color: #493d33;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

footer h1 { 
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ec971f;
    font-size: 18px;
    margin: 0;
    position: static; /* hapus fixed */
}

.radio-request-card {
    background-color: rgba(73, 61, 51, 0.9);
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    width: 350px;
    padding: 30px;
    backdrop-filter: blur(10px);
}

.card-header h2 {
    color: #f0f0f0;
    text-align: center;
    margin-bottom: 25px;
    font-size: 24px;
    letter-spacing: 1px;
}

.radio-form .form-group {
    position: relative;
    margin-bottom: 20px;
}

.radio-form .form-control {
    background-color: rgba(192, 173, 159, 0.2);
    border: none;
    color: #f0f0f0;
    padding: 12px 15px;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.radio-form .form-control::placeholder {
    color: rgba(240, 240, 240, 0.7);
}

.radio-form .form-control:focus {
    outline: none;
    background-color: rgba(192, 173, 159, 0.3);
}

.input-highlight {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 100%;
    background: linear-gradient(to right, transparent, #f0ad4e, transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.radio-form .form-control:focus + .input-highlight {
    opacity: 1;
}

.btn-submit {
    width: 100%;
    padding: 12px;
    background-color: #f0ad4e;
    color: #493d33;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    background-color: #ec971f;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.radio-form select {
    appearance: none; 
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M1 4l5 5 5-5z' fill='%23f0f0f0'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
}

.radio-form select:focus {
    outline: none;
    box-shadow: none;
}

.radio-form select option {
    background-color: #493d33;
    color: #f0f0f0;
    padding: 10px;
}

.radio-form select option:checked {
    background-color: #f0ad4e;
    color: #493d33;
}

@supports (-webkit-touch-callout: none) {
    .radio-form select option {
        background-color: #ffffff;
        color: #000000;
    }
}

#loader {
  display: none; 
  padding: 20px;
  border-radius: 12px;
  background: #f8f9fa;
  box-shadow: 0 0 20px rgba(0, 123, 255, 0.1);
  max-width: 300px;
  margin: 20px auto;
  transition: all 0.3s ease;
  animation: fadeIn 0.5s ease-in-out;
}

.spinner-border {
  width: 3rem;
  height: 3rem;
}

#loader p {
  font-weight: 500;
  color: #0d6efd;
  margin-top: 12px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}