body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(145deg, #0f2027, #203a43, #2c5364);
    display: flex;
    justify-content: center;
    align-items: start;
    padding: 40px 20px;
    min-height: 100vh;
    margin: 0;
    color: #fff;
}

.card {
    background: #1e1e2f;
    padding: 30px 25px;
    border-radius: 20px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    box-shadow: 0 0 25px rgba(0,0,0,0.3);
    animation: fadeIn 1s ease-out;
}

.logo-box {
    margin-top: -60px;
    margin-bottom: 20px;
}

.profile-logo {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

input {
    padding: 14px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    outline: none;
    background: #f4f4f4;
    color: #333;
}

button {
    padding: 14px;
    background: #28a745;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 10px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s ease;
}

button:hover {
    background: #218838;
}

.last-step {
    font-weight: bold;
    margin-top: 18px;
}

.hidden {
    display: none;
}

.username-display {
    background: #2a2a40;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: bold;
}

.instruction {
    font-size: 15px;
    color: #ccc;
    margin-bottom: 20px;
}

.offer-btn {
    background: #343456;
    border-radius: 8px;
    padding: 12px;
    margin: 10px 0;
    cursor: pointer;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    transition: background 0.3s;
}

.offer-btn:hover {
    background: #3f3f6f;
}

.offer-badge {
    background: #17a2b8;
    padding: 5px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
    color: #fff;
}

.incomplete-btn {
    margin-top: 20px;
    background: #dc3545;
    color: white;
    padding: 12px;
    border-radius: 8px;
    font-weight: bold;
    font-size: 16px;
    border: none;
    width: 100%;
}

.pulse {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 500px) {
    .card {
        padding: 25px 20px;
    }

    .input-wrapper {
        gap: 10px;
    }
}