{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: #f5f7fa;
    color: #222;
}

.hero {
    position: relative;
    background: url('../images/banner.jpg') center/cover no-repeat;
    min-height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    padding: 20px;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 15px;
}

.subtitle {
    font-size: 20px;
    margin-bottom: 30px;
}

.course-box {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.course-item {
    background: rgba(255,255,255,0.15);
    padding: 20px;
    border-radius: 12px;
    min-width: 220px;
    backdrop-filter: blur(5px);
}

.course-item span {
    display: block;
    font-size: 14px;
    margin-bottom: 8px;
}

.course-item strong {
    font-size: 24px;
}

.price-box {
    background: #00a86b;
}

.participant-box {
    margin-top: 30px;
    font-size: 20px;
}

.form-container {
    width: 95%;
    max-width: 600px;
    margin: -60px auto 50px;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    position: relative;
    z-index: 5;
}

.form-container h2 {
    text-align: center;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.form-group input {
    width: 80%;
    padding: 14px;
    border: 1px solid #ccc;
    border-radius: 10px;
    font-size: 16px;
}

.register-btn {
    width: 100%;
    padding: 16px;
    border: none;
    background: #111827;
    color: white;
    border-radius: 10px;
    font-size: 18px;
    cursor: pointer;
    transition: 0.3s;
}

.register-btn:hover {
    background: #000;
}

.payment-info {
    margin-top: 30px;
    background: #f3f4f6;
    padding: 20px;
    border-radius: 12px;
}

.payment-info h3 {
    margin-bottom: 15px;
}

.whatsapp-btn {
    display: block;
    text-align: center;
    margin-top: 25px;
    background: #25D366;
    color: white;
    padding: 15px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: bold;
}

.success-box {
    width: 90%;
    max-width: 600px;
    margin: 120px auto;
    background: white;
    padding: 50px;
    text-align: center;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.back-btn {
    display: inline-block;
    margin-top: 25px;
    padding: 14px 30px;
    background: #111827;
    color: white;
    border-radius: 10px;
    text-decoration: none;
}

.admin-container {
    width: 95%;
    margin: 40px auto;
}

.admin-container h1 {
    margin-bottom: 30px;
}

.search-box {
    margin-bottom: 20px;
    display: flex;
    gap: