* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 20px 0;
}

.invitation-card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-header-custom {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 40px 30px;
    text-align: center;
    color: white;
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    backdrop-filter: blur(10px);
}

.icon-wrapper i {
    font-size: 40px;
}

.form-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}

.form-subtitle {
    font-size: 16px;
    opacity: 0.9;
    margin: 0;
}

.card-body-custom {
    padding: 40px 30px;
}

.form-group-custom {
    margin-bottom: 25px;
}

.form-label-custom {
    display: block;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-label-custom i {
    color: #667eea;
    margin-right: 5px;
}

.required {
    color: #e74c3c;
}

.form-control-custom {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.form-control-custom:focus {
    outline: none;
    border-color: #667eea;
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-control-custom::placeholder {
    color: #999;
}

.btn-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-submit:active {
    transform: translateY(0);
}

.btn-submit i {
    margin-right: 8px;
}

.btn-download {
    padding: 10px 30px;
    background: #ffffff;
    color: #667eea;
    border: 2px solid #667eea;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.btn-download i {
    margin-right: 8px;
}

hr {
    border: 0;
    border-top: 2px solid #e0e0e0;
    margin: 20px 0;
}

.text-muted {
    color: #999;
    font-size: 12px;
    display: block;
    margin-top: 5px;
}

.toast {
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

@media (max-width: 576px) {
    .card-header-custom {
        padding: 30px 20px;
    }
    
    .card-body-custom {
        padding: 30px 20px;
    }
    
    .form-title {
        font-size: 24px;
    }
    
    .icon-wrapper {
        width: 70px;
        height: 70px;
    }
    
    .icon-wrapper i {
        font-size: 35px;
    }
}