body {
    background: #0a0d1a;
    will-change: background-color;
}

.container {
    margin-top: 1rem;
    min-height: calc(100vh - 76px);
    padding: 0 0.75rem;
}

.contact-card {
    background: #181c2f;
    border-radius: 1.5rem;
    box-shadow: 0 4px 32px rgba(0,0,0,0.25);
    padding: 2rem 1.5rem;
    margin-top: 1.5rem;
    color: #fff;
    width: 100%;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.form-label {
    color: #ffd600;
    font-weight: 500;
}

.form-control {
    background: #23284a;
    border: 1px solid #444;
    color: #fff;
}

.form-control:focus {
    border-color: #ffd600;
    box-shadow: 0 0 0 0.2rem rgba(255,214,0,.25);
}

.btn-primary {
    background: linear-gradient(90deg, #ffd600 0%, #ff9800 100%);
    border: none;
    color: #222;
    font-weight: bold;
    font-size: 1.1rem;
}

.btn-primary:hover {
    background: linear-gradient(90deg, #ff9800 0%, #ffd600 100%);
    color: #222;
}

.captcha-container {
    display: flex;
    align-items: center;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    background: #23284a;
    padding: 15px;
    border-radius: 10px;
    border: 2px solid #ffd600;
    margin-bottom: 15px;
}

.captcha-container img {
    max-width: 240px;
    height: auto;
    border-radius: 5px;
    background: #fff;
    padding: 5px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.captcha-container img.loaded {
    opacity: 1;
}

.refresh-button {
    padding: 8px 12px;
    height: 40px;
    min-width: 40px;
    background: linear-gradient(90deg, #ffd600 0%, #ff9800 100%);
    border: none;
    color: #222;
    font-weight: bold;
}

.refresh-button:hover {
    background: linear-gradient(90deg, #ff9800 0%, #ffd600 100%);
}

.form-control::placeholder {
    color: #6c757d;
    opacity: 0.7;
}

.form-control:focus::placeholder {
    opacity: 0.5;
}

@media (max-width: 768px) {
    .container {
        padding: 0 0.5rem;
    }
}