* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, Segoe UI, Arial, sans-serif;
    background: #f5f7fb;
    color: #111827;
}

.shell {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: #ffffff;
    border-right: 1px solid #e5e7eb;
    padding: 24px;
}

.logo {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 36px;
}

.logo .mark {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: white;
    display: grid;
    place-items: center;
    font-weight: 800;
}

.logo strong {
    display: block;
    letter-spacing: 1px;
}

.logo span {
    font-size: 11px;
    color: #6b7280;
}

nav a {
    display: block;
    padding: 12px 14px;
    margin-bottom: 6px;
    color: #374151;
    text-decoration: none;
    border-radius: 10px;
    font-size: 14px;
}

nav a.active,
nav a:hover {
    background: #eef2ff;
    color: #2563eb;
}

.main {
    flex: 1;
    padding: 32px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}

h1 {
    margin: 0;
    font-size: 30px;
}

p {
    color: #6b7280;
}

button {
    background: #2563eb;
    color: white;
    border: 0;
    padding: 12px 18px;
    border-radius: 10px;
    cursor: pointer;
}

.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 22px;
}

.card,
.panel {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.card {
    padding: 22px;
}

.card span {
    display: block;
    color: #6b7280;
    margin-bottom: 10px;
}

.card strong {
    display: block;
    font-size: 34px;
    margin-bottom: 8px;
}

.card small {
    color: #9ca3af;
}

.panel {
    padding: 22px;
    margin-bottom: 22px;
}

.panel h2 {
    margin-top: 0;
}

.status-row {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #e5e7eb;
    padding: 14px 0;
}

.status-row strong {
    color: #2563eb;
}

pre {
    background: #111827;
    color: #d1d5db;
    padding: 18px;
    border-radius: 12px;
    overflow-x: auto;
}

@media (max-width: 1000px) {
    .cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .sidebar {
        display: none;
    }
}