/* هنا التنسيقات الخاصة بك */
.checker-container {
    max-width: 500px;
    margin: 50px auto;
    padding: 30px;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    font-family: 'Segoe UI', sans-serif;
    transition: all 0.3s ease;
}

.checker-container h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 25px;
    text-align: center;
    color: #1e293b;
}

.checker-container input[type="text"] {
    width: 100%;
    padding: 14px;
    font-size: 17px;
    border-radius: 12px;
    border: 2px solid #cbd5e1;
    margin-bottom: 20px;
    transition: border 0.3s ease;
}

.checker-container input[type="text"]:focus {
    border-color: #6366f1;
    outline: none;
}

.checker-container button {
    width: 100%;
    padding: 14px;
    background-color: #4f46e5;
    color: white;
    font-size: 17px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.checker-container button:hover {
    background-color: #4338ca;
}

#result-message {
    margin-top: 25px;
    text-align: center;
    font-size: 16px;
    padding: 16px;
    border-radius: 14px;
    display: none;
    line-height: 1.6;
    font-weight: 500;
    animation: fadeIn 0.4s ease;
}

.success {
    background-color: #dcfce7;
    color: #15803d;
    border: 1px solid #86efac;
}

.warning {
    background-color: #fef9c3;
    color: #92400e;
    border: 1px solid #fde047;
}

.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}