:root {
    --color-bg: #eef1f6;
    --color-card: #ffffff;
    --color-text: #1f2a44;
    --color-muted: #5a6478;
    --color-accent: #2f57d6;
    --color-accent-hover: #2545b0;
    --color-border: #e1e5ee;
    --radius-card: 16px;
    --radius-control: 10px;
    --shadow-card: 0 18px 48px rgba(31, 42, 68, 0.12);
}

* {
    box-sizing: border-box;
}

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

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

.page {
    min-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.card {
    width: 100%;
    max-width: 480px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 40px 36px;
    text-align: center;
}

.card__heading {
    font-family: "Kanit", "Inter", sans-serif;
    font-weight: 600;
    font-size: 1.6rem;
    margin: 0 0 20px;
    color: var(--color-text);
}

.card__message {
    font-size: 1.05rem;
    color: var(--color-muted);
    margin: 0 0 28px;
}

.card__message strong {
    color: var(--color-text);
    font-weight: 600;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f7fb;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-control);
    padding: 20px;
    margin: 0 auto 28px;
    max-width: 320px;
}

.logo__img {
    max-width: 240px;
    max-height: 96px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.button {
    display: inline-block;
    background: var(--color-accent);
    color: #ffffff;
    font-family: "Inter", sans-serif;
    font-weight: 600;
    font-size: 1.05rem;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: var(--radius-control);
    transition: background-color 0.15s ease-in-out, transform 0.05s ease-in-out;
}

.button:hover {
    background: var(--color-accent-hover);
}

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

.button:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
}

@media (max-width: 520px) {
    .card {
        padding: 32px 24px;
    }

    .card__heading {
        font-size: 1.4rem;
    }
}