body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f6f7fb;
    color: #1f2933;
}

header {
    background: #111827;
    color: #fff;
    padding: 12px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

a {
    color: #0f62fe;
    text-decoration: none;
}

main {
    max-width: 1080px;
    margin: 24px auto;
    padding: 0 16px 32px;
}

.card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.grid {
    display: grid;
    gap: 12px;
}

.grid.two {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

label {
    display: block;
    font-size: 14px;
    margin-bottom: 4px;
}

input[type="text"],
input[type="password"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 14px;
    box-sizing: border-box;
}

button, .button {
    background: #0f62fe;
    color: #fff;
    border: none;
    padding: 10px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

button.secondary, .button.secondary {
    background: #e5e7eb;
    color: #111827;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    border-bottom: 1px solid #e5e7eb;
    padding: 8px;
    text-align: left;
}

.flash {
    padding: 10px 12px;
    border-radius: 6px;
    margin-bottom: 12px;
    background: #eef2ff;
    color: #1f2937;
}

.flash.error {
    background: #fee2e2;
    color: #991b1b;
}

.nav-links a {
    margin-right: 12px;
    color: #cbd5e1;
}

.nav-links a.active {
    color: #fff;
    font-weight: 700;
}

.muted {
    color: #6b7280;
}