.iccid-checker-container {
    max-width: 75%;
    margin: 40px auto;
    padding: 0 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.iccid-title-wrapper {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.iccid-title {
    font-family: 'Roboto' !important;
    font-size: 32px !important;
    font-weight: 500 !important;
    color: #000 !important;
    margin: 0 !important;
    line-height: 1.2 !important;
}

.iccid-info-wrapper {
    position: relative;
    display: inline-block;
}

.iccid-info-icon {
    color: #FFA500;
    font-size: 20px;
    font-weight: bold;
    margin-top: -10px;
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.iccid-info-icon:hover {
    transform: scale(1.1);
}

.iccid-info-icon svg {
    transition: all 0.2s ease;
}

.iccid-info-icon:hover svg circle {
    fill: #ff9500;
}

.iccid-tooltip {
    position: absolute;
    top: -70px;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border-radius: 12px;
    padding: 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    border: 1px solid #e8e8e8;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.iccid-tooltip.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(8px);
}

.tooltip-arrow {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid white;
    z-index: 1;
}

.tooltip-arrow::before {
    content: '';
    position: absolute;
    bottom: -4px;
    left: -9px;
    width: 0;
    height: 0;
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-top: 9px solid #fff;
    z-index: -1;
}

.tooltip-content {
    padding: 10px;
    color: #636363;
    font-size: 14px;
    line-height: 1.2;
    text-align: center;
    font-weight: 300;
}

.tooltip-content strong {
    color: #333;
    font-weight: 600;
}

.iccid-form-container {
    width: 70%;
    background: #ffffff;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    border: 1px solid #f0f0f0;
}

.iccid-form {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.iccid-input-wrapper {
    display: flex;
    align-items: center;
    flex: 1;
    gap: 32px;
}

.iccid-sim-icon {
    left: 16px;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sim-card {
    width: 20px;
    height: 16px;
    background: #FFA500;
    border-radius: 2px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sim-card::after {
    content: '';
    position: absolute;
    top: 2px;
    right: 2px;
    width: 3px;
    height: 3px;
    background: white;
    border-radius: 1px;
}

.sim-card::before {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 2px;
    width: 8px;
    height: 2px;
    background: white;
    border-radius: 1px;
}

#iccid-input-text {
    width: 100%;
    border: none;
    padding: 0;
    border-bottom: 1px solid #e8e8e8;
    font-size: 18px;
    font-weight: 300;
    color: #1F1F1F;
    background: #ffffff;
    box-sizing: border-box;
    box-shadow: none;
    font-family: 'Roboto';
}

.iccid-input::placeholder {
    color: #999;
}

.iccid-input:focus {
    outline: none;
    border-color: #FFA500;
    box-shadow: 0 0 0 3px rgba(255, 165, 0, 0.1);
}

.iccid-input.error,
#iccid-input-text.error {
    border-bottom-color: #dc3545 !important;
    background: #fef5f5;
}

#iccid-input-text.success {
    border-color: #FFA500 !important;
    background: #ffffff;
}

.input-text-container {
    display: flex;
    flex-direction: column;
    width: 75%;
}

.error-message {
    color: #dc3545 !important;
    font-weight: 300 !important;
    font-size: 14px !important;
    margin-top: 8px !important;
    line-height: 1.4 !important;
    flex: 100% !important;
    order: 3 !important;
}

.iccid-button {
    padding: 10px 20px;
    background: #D9D9D6;
    border-radius: 6px;
    font-size: 14px;
    text-decoration: none;
    color: white;
}

.iccid-button.disabled {
    background: #cccccc;
    color: #ffffff;
    cursor: not-allowed;
}

.iccid-button.success {
    background: #FFA500 !important;
    color: #ffffff;
    cursor: pointer;
}

.iccid-button.success:hover {
    background: #ff9500;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 165, 0, 0.3);
}

.iccid-button.success:active {
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .iccid-checker-container {
        margin: 20px auto;
        padding: 0px;
        max-width: 100%;
    }
    
    .iccid-title {
        font-size: 22px;
    }
    
    .iccid-form-container {
        width: 100%;
        padding: 24px 20px;
    }
    
    .iccid-input {
        padding: 16px 18px 16px 48px;
        font-size: 16px;
    }
    
    .error-message {
        margin-left: 0;
    }
    
    .iccid-button {
        padding: 16px 24px;
        font-size: 15px;
        width: 100%;
        flex-shrink: 1;
        text-align: center;
    }

    .iccid-form {
        flex-direction: column;
        align-items: stretch;
        gap: 24px;
    }

    .iccid-input-wrapper {
        flex-direction: column;
    }

    .error-message {
        order: 0;
        margin-top: -16px;
        flex: none;
    }
    
    .iccid-tooltip {
        top: -75px;
        min-width: 200px;
        left: -80px;
        transform: translateX(0);
    }
    
    .iccid-tooltip.show {
        transform: translateX(0) translateY(-5px);
    }
    
    .tooltip-arrow {
        left: 90px;
    }
    
    .tooltip-arrow::before {
        left: -9px;
    }
}