:root {
    color-scheme: light;
    --bg: #f4f7fb;
    --panel: #ffffff;
    --border: #d9e2ef;
    --text: #122033;
    --muted: #5c6b7f;
    --accent: #2153cc;
    --accent-2: #163a8a;
    --success: #0d7a4a;
    --warning: #b26b00;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(180deg, #eef3fb 0%, var(--bg) 100%);
    color: var(--text);
}

.shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.topbar h1 {
    margin: 0;
    font-size: 28px;
}

.topbar p {
    margin: 4px 0 0;
    color: var(--muted);
}

.topbar nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.topbar a,
.topbar button {
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    padding: 10px 14px;
    border-radius: 10px;
    text-decoration: none;
    cursor: pointer;
}

.content {
    display: grid;
    gap: 18px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 12px 28px rgba(18, 32, 51, 0.05);
}

.card h2 {
    margin-top: 0;
}

.stat span {
    display: block;
    color: var(--muted);
    margin-bottom: 8px;
}

.stat strong {
    font-size: 32px;
}

.form {
    display: grid;
    gap: 12px;
    max-width: 520px;
}

.form input,
.form textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px;
    font-size: 15px;
}

.form button {
    justify-self: start;
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 12px 18px;
    border-radius: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.success {
    border-color: rgba(13, 122, 74, 0.25);
    background: rgba(13, 122, 74, 0.06);
}

.alert.warning {
    border: 1px solid rgba(178, 107, 0, 0.3);
    background: rgba(178, 107, 0, 0.08);
    color: var(--warning);
    padding: 12px 14px;
    border-radius: 12px;
}

.inline {
    display: inline;
}

code {
    background: #eef3fb;
    border: 1px solid var(--border);
    padding: 2px 6px;
    border-radius: 6px;
}