* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
}

body {
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Arial,
        sans-serif;

    background: #f3f5f7;
    color: #202124;
}

.page {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 20px;
}

.card {
    width: 100%;
    max-width: 430px;

    background: #ffffff;

    border-radius: 16px;

    padding: 40px;

    box-shadow:
        0 10px 30px rgba(0, 0, 0, 0.08);
}

.icon {
    width: 58px;
    height: 58px;

    margin: 0 auto 20px;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 50%;

    font-size: 28px;
}

.computer-icon {
    background: #eef3f8;
}

.success-icon {
    background: #e9f7ef;

    color: #198754;

    font-size: 30px;
    font-weight: 600;
}

h1 {
    margin: 0;

    text-align: center;

    font-size: 26px;
    font-weight: 600;
}

.description {
    margin: 12px 0 30px;

    text-align: center;

    color: #6b7280;

    font-size: 15px;

    line-height: 1.5;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;

    margin-bottom: 7px;

    font-size: 14px;

    font-weight: 500;
}

input {
    width: 100%;

    padding: 13px 14px;

    border: 1px solid #d1d5db;

    border-radius: 8px;

    background: #ffffff;

    color: #202124;

    font-size: 16px;

    outline: none;

    transition:
        border-color 0.15s,
        box-shadow 0.15s;
}

input:focus {
    border-color: #6b7280;

    box-shadow:
        0 0 0 3px rgba(107, 114, 128, 0.12);
}

input::placeholder {
    color: #9ca3af;
}

.button {
    display: flex;

    align-items: center;
    justify-content: center;

    width: 100%;

    min-height: 48px;

    padding: 12px 18px;

    border: none;

    border-radius: 8px;

    background: #202124;

    color: #ffffff;

    font-size: 15px;

    font-weight: 500;

    text-decoration: none;

    cursor: pointer;

    transition:
        background 0.15s,
        transform 0.05s;
}

.button:hover {
    background: #303134;
}

.button:active {
    transform: translateY(1px);
}

.computer-box {
    margin: 25px 0;

    padding: 24px;

    text-align: center;

    background: #f7f8fa;

    border: 1px solid #e5e7eb;

    border-radius: 12px;
}

.computer-label {
    margin-bottom: 8px;

    color: #6b7280;

    font-size: 14px;
}

.computer-name {
    font-size: 28px;

    font-weight: 600;

    letter-spacing: 0.5px;
}

.secondary-link {
    display: block;

    margin-top: 18px;

    text-align: center;

    color: #6b7280;

    font-size: 14px;

    text-decoration: none;
}

.secondary-link:hover {
    color: #202124;

    text-decoration: underline;
}

.info {
    margin-top: 28px;

    padding: 15px 16px;

    border-radius: 8px;

    background: #f7f8fa;

    color: #6b7280;

    font-size: 13px;

    line-height: 1.5;
}

.info strong {
    color: #404040;
}

.info p {
    margin: 5px 0 0;
}

.message {
    margin-top: 20px;

    padding: 12px 14px;

    border-radius: 8px;

    background: #fff1f2;

    color: #b42318;

    font-size: 14px;

    text-align: center;

    line-height: 1.4;
}

@media (max-width: 480px) {

    .page {
        padding: 15px;
    }

    .card {
        padding: 30px 22px;

        border-radius: 12px;
    }

    h1 {
        font-size: 23px;
    }

    .computer-name {
        font-size: 25px;
    }
}