:root {
    --brand: #159bd7;
    --brand-dark: #0872a4;
    --ink: #071425;
    --muted: #607089;
    --line: #dbe8f2;
    --soft: #f4f9fc;
    --danger: #dc2626;
    --warning: #d97706;
    --ok: #059669;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--ink);
    background:
        linear-gradient(135deg, rgba(21, 155, 215, 0.12), rgba(255, 255, 255, 0) 34%),
        linear-gradient(180deg, #f8fbfd 0%, #edf4f8 100%);
}

.shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 28px;
}

.panel {
    width: min(720px, 100%);
    padding: clamp(28px, 5vw, 56px);
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--line);
    border-radius: 28px;
    box-shadow: 0 28px 80px rgba(15, 23, 42, 0.12);
}

.logo {
    display: block;
    height: 58px;
    width: auto;
    margin-bottom: 36px;
}

.status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.status-ok {
    background: #ecfdf5;
    color: var(--ok);
    border: 1px solid #bbf7d0;
}

.status-warning {
    background: #fffbeb;
    color: var(--warning);
    border: 1px solid #fde68a;
}

.status-danger {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

h1 {
    margin: 18px 0 10px;
    font-size: clamp(32px, 6vw, 52px);
    line-height: 0.98;
    letter-spacing: -0.04em;
}

.lead {
    max-width: 620px;
    margin: 0 0 28px;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.55;
}

.secret {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    min-height: 170px;
    max-height: 420px;
    overflow: auto;
    margin: 0;
    padding: 22px;
    color: #0f172a;
    background: var(--soft);
    border: 1px solid var(--line);
    border-left: 6px solid var(--brand);
    border-radius: 18px;
    font: 600 15px/1.55 Consolas, "Liberation Mono", monospace;
}

.button {
    width: 100%;
    margin-top: 22px;
    border: 0;
    border-radius: 18px;
    padding: 16px 20px;
    background: var(--ink);
    color: #ffffff;
    font-weight: 900;
    font-size: 15px;
    cursor: pointer;
    box-shadow: 0 16px 28px rgba(7, 20, 37, 0.18);
}

.button:hover {
    background: #111d31;
}

.hint {
    margin: 18px 0 0;
    color: var(--muted);
    font-size: 13px;
    text-align: center;
}

@media (max-width: 560px) {
    .shell {
        padding: 14px;
    }

    .panel {
        border-radius: 22px;
        padding: 24px;
    }

    .logo {
        height: 46px;
        margin-bottom: 26px;
    }
}