:root {
    --cp-bg: #0b1020;
    --cp-card: #121a30;
    --cp-border: #24304f;
    --cp-text: #e6ebf5;
    --cp-muted: #9aa7c2;
    --cp-accent: #4fb3ff;
    --cp-pass: #3ddc97;
    --cp-fail: #ff6b6b;
}

.cp-body {
    margin: 0;
    background: var(--cp-bg);
    color: var(--cp-text);
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.55;
}

/* ── Header: the site's logo, title and subtitle ─────────────────────── */

.cp-site-header {
    position: relative;
    z-index: 2;
    border-bottom: 1px solid var(--cp-border);
    padding: 28px 0;
    background: rgba(11, 16, 32, 0.82);
    backdrop-filter: blur(2px);
}

.header-container,
.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 18px;
}

.logo-link {
    flex-shrink: 0;
    line-height: 0;
}

.logo-image {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    border: 1px solid var(--cp-border);
}

.page-title {
    margin: 0;
    font-size: clamp(1.5rem, 3.6vw, 2.1rem);
    font-weight: 700;
    letter-spacing: -0.022em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--cp-accent), var(--cp-pass));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.page-subtitle {
    margin: 4px 0 0;
    color: var(--cp-muted);
    font-size: 0.95rem;
}

/* ── Main ───────────────────────────────────────────────────────────── */

.cp-main {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

.cp-intro p,
.cp-card p {
    color: var(--cp-muted);
}

.cp-intro a,
.cp-card a {
    color: var(--cp-accent);
}

.cp-note {
    font-size: 0.9rem;
    border-left: 3px solid var(--cp-border);
    padding-left: 12px;
}

/* ── Footer: the line the rest of pqcrypta.com closes with ───────────── */

.cp-footer {
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--cp-border);
    padding: 28px 0 48px;
    background: rgba(11, 16, 32, 0.82);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
    margin: 0 0 12px;
    padding: 0;
}

.footer-link {
    color: var(--cp-accent);
    font-size: 0.9rem;
}

.footer-copyright {
    margin: 14px 0 0;
    font-size: 0.8rem;
    color: var(--cp-muted);
}

@media (max-width: 640px) {
    .cp-main {
        padding: 24px 16px 48px;
    }

    .header-container,
    .footer-container {
        padding: 0 16px;
    }
}

.cp-card {
    background: rgba(18, 26, 48, 0.92);
    border: 1px solid var(--cp-border);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
}

.cp-card h2 {
    margin: 0 0 8px;
    font-size: 1.25rem;
}

.cp-label {
    display: block;
    margin: 12px 0 4px;
    font-weight: 600;
}

.cp-input {
    width: 100%;
    max-width: 420px;
    padding: 8px 10px;
    border: 1px solid var(--cp-border);
    border-radius: 8px;
    background: var(--cp-bg);
    color: var(--cp-text);
}

.cp-button {
    margin-top: 12px;
    padding: 9px 18px;
    border: 0;
    border-radius: 8px;
    background: var(--cp-accent);
    color: #04121f;
    font-weight: 700;
    cursor: pointer;
}

.cp-button:disabled {
    opacity: 0.6;
    cursor: progress;
}

.cp-status {
    min-height: 1.5em;
    margin: 12px 0;
    color: var(--cp-text);
}

.cp-error {
    color: var(--cp-fail);
}

.cp-table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
    font-size: 0.92rem;
}

.cp-table th,
.cp-table td {
    padding: 6px 8px;
    border-bottom: 1px solid var(--cp-border);
    text-align: left;
    vertical-align: top;
    overflow-wrap: anywhere;
}

.cp-table th {
    color: var(--cp-muted);
    font-weight: 600;
}

.cp-pass {
    color: var(--cp-pass);
    font-weight: 600;
}

.cp-fail {
    color: var(--cp-fail);
    font-weight: 600;
}

.cp-mono,
.cp-card code {
    font-family: ui-monospace, 'SFMono-Regular', Menlo, monospace;
    overflow-wrap: anywhere;
}

@media (max-width: 640px) {
    .cp-table {
        font-size: 0.8rem;
    }
}