:root {
    --bg: #f5f7f8;
    --panel: #ffffff;
    --line: #d8e0e4;
    --text: #1d2b33;
    --muted: #64747d;
    --primary: #0b6f8f;
    --primary-dark: #084f66;
    --danger: #b3261e;
    --ok: #1b7f4f;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.45 Arial, Helvetica, sans-serif;
}

a {
    color: var(--primary);
    text-decoration: none;
}

.topbar {
    align-items: center;
    background: #12313d;
    color: #fff;
    display: flex;
    justify-content: space-between;
    min-height: 58px;
    padding: 0 28px;
}

.brand {
    color: #fff;
    font-size: 18px;
    font-weight: 700;
}

.topbar nav {
    display: flex;
    gap: 18px;
}

.topbar nav a {
    color: #d9eef4;
    font-size: 14px;
}

.shell {
    margin: 0 auto;
    max-width: 1180px;
    padding: 28px;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 6px;
    margin-bottom: 20px;
    padding: 22px;
}

.grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.login {
    margin: 80px auto;
    max-width: 420px;
}

h1, h2 {
    margin: 0 0 16px;
}

label {
    color: var(--muted);
    display: block;
    font-size: 13px;
    font-weight: 700;
    margin: 12px 0 6px;
}

input, select, textarea {
    border: 1px solid var(--line);
    border-radius: 5px;
    font: inherit;
    padding: 10px 11px;
    width: 100%;
}

textarea {
    min-height: 130px;
    resize: vertical;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

button, .button {
    background: var(--primary);
    border: 0;
    border-radius: 5px;
    color: #fff;
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-weight: 700;
    justify-content: center;
    padding: 10px 14px;
}

button:hover, .button:hover {
    background: var(--primary-dark);
    color: #fff;
}

.button.secondary, button.secondary {
    background: #e7eef1;
    color: var(--text);
}

.button.danger, button.danger {
    background: var(--danger);
}

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

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

th {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
}

.stat {
    border-left: 4px solid var(--primary);
    padding-left: 14px;
}

.stat strong {
    display: block;
    font-size: 28px;
}

.muted {
    color: var(--muted);
}

.flash {
    border-radius: 5px;
    margin-bottom: 16px;
    padding: 12px 14px;
}

.flash.ok {
    background: #e4f4ec;
    color: var(--ok);
}

.flash.error {
    background: #fbe9e8;
    color: var(--danger);
}

@media (max-width: 720px) {
    .topbar {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
        padding: 14px 18px;
    }

    .topbar nav {
        flex-wrap: wrap;
        gap: 10px 14px;
    }

    .shell {
        padding: 18px;
    }
}