.sdc-container {
    max-width: 500px;
    margin: 40px auto;
    padding: 30px;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    text-align: center;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: #333;
}

.sdc-heading {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 25px;
    color: #1a1a1a;
}

.sdc-input-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.sdc-container input[type="text"] {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #eef2f7;
    border-radius: 12px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.sdc-container input[type="text"]:focus {
    outline: none;
    border-color: #007cff;
}

.sdc-container button {
    background: #007cff;
    color: white;
    border: none;
    padding: 15px 25px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.sdc-container button:hover {
    background: #0066d6;
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(0, 124, 255, 0.2);
}

.sdc-container button:active {
    transform: translateY(0);
}

.sdc-result {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

#sdc-message {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
}

.sdc-prob-bar {
    height: 10px;
    background: #f0f0f0;
    border-radius: 10px;
    overflow: hidden;
    width: 100%;
}

.sdc-prob-fill {
    height: 100%;
    background: linear-gradient(90deg, #007cff, #00c6ff);
    width: 0%;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.sdc-error {
    margin-top: 15px;
    color: #ff4d4d;
    font-size: 14px;
}

/* Loading state */
.sdc-loading button {
    opacity: 0.7;
    cursor: not-allowed;
}