* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Trebuchet MS", "Segoe UI", Arial, sans-serif;
    background: linear-gradient(135deg, #dff6ff, #fff7cc);
    color: #111111;
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.card {
    width: 100%;
    max-width: 820px;
    background: #fff8d6;
    border: 3px solid #111111;
    border-radius: 22px;
    padding: 42px;
    box-shadow: 10px 10px 0 #111111;
}

.header {
    margin-bottom: 30px;
}

.badge {
    display: inline-block;
    margin: 0 0 14px;
    padding: 8px 14px;
    border: 2px solid #111111;
    border-radius: 999px;
    background: #bdeeff;
    color: #111111;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.4px;
}

h1 {
    margin: 0;
    font-size: 44px;
    color: #111111;
    line-height: 1.1;
}

.subtitle {
    margin-top: 12px;
    color: #2f2f2f;
    font-size: 17px;
    line-height: 1.6;
}

.monitor-form {
    display: flex;
    gap: 14px;
    margin-top: 28px;
}

.monitor-form input {
    flex: 1;
    padding: 15px 16px;
    border: 3px solid #111111;
    border-radius: 12px;
    background: #ffffff;
    color: #111111;
    font-size: 16px;
}

.monitor-form input::placeholder {
    color: #6b7280;
}

.monitor-form input:focus {
    outline: none;
    background: #f0fbff;
    box-shadow: 5px 5px 0 #111111;
}

.monitor-form button {
    padding: 15px 24px;
    border: 3px solid #111111;
    border-radius: 12px;
    background: #8ee6ff;
    color: #111111;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 4px 4px 0 #111111;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.monitor-form button:hover {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 #111111;
    background: #67dcff;
}

.result-card {
    margin-top: 32px;
    padding: 26px;
    border: 3px solid #111111;
    border-radius: 18px;
    background: #e9f9ff;
    box-shadow: 6px 6px 0 #111111;
}

.result-card h2 {
    margin-top: 0;
    margin-bottom: 20px;
    color: #111111;
    font-size: 26px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 14px 0;
    border-bottom: 2px solid #111111;
}

.result-row span {
    color: #222222;
    font-weight: 700;
}

.result-row strong {
    text-align: right;
    color: #111111;
    word-break: break-word;
}

.status {
    display: inline-block;
    padding: 7px 14px;
    border: 2px solid #111111;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 900;
    letter-spacing: 0.5px;
}

.status.up {
    background: #c8f7c5;
    color: #111111;
}

.status.down {
    background: #ffc9c9;
    color: #111111;
}

.status.invalid {
    background: #ffe680;
    color: #111111;
}

.message {
    margin-top: 20px;
    padding: 16px;
    border: 2px solid #111111;
    border-radius: 12px;
    background: #fff8d6;
    color: #111111;
    font-weight: 600;
    line-height: 1.5;
}

.history-card {
    margin-top: 32px;
    padding: 26px;
    border: 3px solid #111111;
    border-radius: 18px;
    background: #fff8d6;
    box-shadow: 6px 6px 0 #111111;
}

.history-card h2 {
    margin-top: 0;
    margin-bottom: 20px;
    color: #111111;
    font-size: 26px;
}

.table-wrapper {
    width: 100%;
    overflow-x: auto;
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    border: 2px solid #111111;
}

.history-table th,
.history-table td {
    padding: 12px;
    border-bottom: 2px solid #111111;
    text-align: left;
    color: #111111;
    font-size: 14px;
}

.history-table th {
    background: #bdeeff;
    font-weight: 900;
}

.history-table tr:last-child td {
    border-bottom: none;
}

@media (max-width: 640px) {
    .page-wrapper {
        padding: 20px;
    }

    .card {
        padding: 28px;
        box-shadow: 6px 6px 0 #111111;
    }

    h1 {
        font-size: 34px;
    }

    .monitor-form {
        flex-direction: column;
    }

    .monitor-form button {
        width: 100%;
    }

    .result-row {
        flex-direction: column;
        gap: 6px;
    }

    .result-row strong {
        text-align: left;
    }
}