body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f7fb;
    color: #222;
}

.container {
    width: 1100px;
    max-width: calc(100% - 40px);
    margin: 30px auto;
}

.topbar {
    background: #111827;
    color: #fff;
    padding: 15px 0;
}

.topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar a {
    color: #fff;
    text-decoration: none;
    margin-left: 18px;
}

h1, h2, h3 {
    margin-top: 0;
}

.card {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 18px rgba(0,0,0,.06);
}

.card.small {
    width: 420px;
    margin: 80px auto;
}

.grid-2, .grid-3 {
    display: grid;
    gap: 18px;
}

.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }

.full { grid-column: 1 / -1; }

label {
    display: block;
    font-weight: bold;
    margin-bottom: 6px;
}

input, select, button {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid #cdd5df;
    border-radius: 8px;
    box-sizing: border-box;
}

button, .btn {
    display: inline-block;
    width: auto;
    text-decoration: none;
    background: #2563eb;
    color: #fff;
    border: none;
    cursor: pointer;
    padding: 10px 16px;
    border-radius: 8px;
}

.btn.danger {
    background: #dc2626;
}

.actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.alert {
    padding: 12px 14px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.alert.success {
    background: #dcfce7;
    color: #166534;
}

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

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

table th, table td {
    border-bottom: 1px solid #e5e7eb;
    padding: 10px;
    text-align: left;
}

.big {
    font-size: 32px;
    font-weight: bold;
    margin: 0;
}

.login-page {
    background: linear-gradient(135deg, #dbeafe, #eff6ff);
}
.footer {
    margin-top: 40px;
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: #6b7280;
}

.footer a {
    color: #2563eb;
    text-decoration: none;
}