*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.logo-bar {
    background-color: #ffffff;
    padding: 16px 32px;
    border-bottom: 1px solid #e0e0e0;
}

.logo-bar a {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.logo-bar img {
    height: 94px;
    width: auto;
}

header {
    background-color: #0066cc;
    padding: 14px 32px;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

header h1 {
    color: #ffffff;
    font-size: 1.6rem;
    font-weight: bold;
    letter-spacing: 0.5px;
}

main {
    flex: 1;
    padding: 48px 32px;
    max-width: 860px;
    margin: 0 auto;
    width: 100%;
}

footer {
    background-color: #0066cc;
    color: #ffffff;
    text-align: center;
    padding: 14px 32px;
    font-size: 1rem;
    position: relative;
}

.btn-refresh {
    position: absolute;
    right: 32px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 4px;
    color: #ffffff;
    font-size: 1.1rem;
    line-height: 1;
    padding: 4px 10px;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.btn-refresh:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: #ffffff;
}

.card {
    background: #fff;
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card + .card {
    margin-top: 32px;
}

.card__title {
    color: #0066cc;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.card__title--spaced {
    margin-bottom: 20px;
}

.ip-display {
    font-size: 1.6rem;
    font-weight: bold;
    font-family: monospace;
    color: #333;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    background-color: #ff6600;
    color: #fff;
    text-decoration: none;
    padding: 14px 24px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: bold;
    transition: background-color 0.2s ease;
}

.btn-download:hover {
    background-color: #cc5200;
}

.btn-download__icon {
    height: 36px;
    width: auto;
}