* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    padding: 20px;
    background-color: #ffffff;
    color: #000000;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 500px;
    margin-top: 40px;
}

.row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 30px 0;
    border-bottom: 2px solid #eeeeee;
}

.info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.label {
    font-size: 1.2rem;
    color: #666666;
}

.value {
    font-size: 2rem;
    font-weight: bold;
    word-break: break-all;
}

.timer {
    font-size: 1rem;
    color: #999999;
    margin-left: 8px;
}

.copy-btn {
    font-size: 1.5rem;
    font-weight: bold;
    padding: 15px 25px;
    background-color: #ffffff;
    color: #000000;
    border: 3px solid #000000;
    border-radius: 12px;
    cursor: pointer;
    min-width: 120px;
    transition: all 0.2s ease;
}

.copy-btn.success {
    color: #28a745;
    border-color: #28a745;
}