:root {
    --bg: #050505;
    --panel: #121212;
    --line: #3b1212;
    --text: #f3e9e9;
    --muted: #c59a9a;
    --accent: #b30000;
    --hint-bg: #220909;
    --hint-line: #8e0000;
    --glow-rgb: 179, 0, 0;
    --radius: 4px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background: var(--bg);
}

.topbar {
    border-bottom: 1px solid var(--line);
    background: #070707;
}

.topbar-inner {
    width: min(980px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 0.8rem 0;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.topbar a {
    color: var(--muted);
    text-decoration: none;
    font-weight: 600;
}

.topbar a:hover {
    color: var(--text);
}

.layout {
    width: min(980px, calc(100% - 2rem));
    margin: 1.2rem auto 2rem;
    display: grid;
    gap: 0.9rem;
}

.intro-panel,
.terminal {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.intro-panel {
    padding: 0.95rem;
}

.intro-panel h1 {
    margin: 0;
    font-size: 1.35rem;
}

.intro-panel p {
    margin: 0.55rem 0 0;
    color: var(--muted);
}

.terminal {
    padding: 0.95rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--muted);
    font-size: 0.86rem;
}

input {
    width: 100%;
    background: #0b0b0b;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0.75rem;
    color: var(--text);
    font-size: 0.98rem;
}

input:focus {
    outline: 1px solid var(--accent);
    border-color: var(--accent);
}

.error-msg {
    margin-top: 0.45rem;
    color: #ff8e8e;
    display: none;
}

.result-box {
    margin-top: 1rem;
    display: none;
}

.verdict {
    font-size: 1.02rem;
    margin-bottom: 0.8rem;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.65rem;
}

.data-item {
    background: #0d0d0d;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0.78rem;
}

.label {
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    margin-bottom: 0.3rem;
}

.value {
    font-family: "Cascadia Mono", Consolas, monospace;
    font-size: 0.93rem;
}

.hint-box {
    margin-top: 0.8rem;
    background: var(--hint-bg);
    border-left: 2px solid var(--hint-line);
    border-radius: var(--radius);
    padding: 0.78rem;
}

@media (max-width: 640px) {
    .topbar-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}