* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    color: #1f2937;
    background: #f3f4f6;
}

a {
    color: inherit;
}

.app-layout {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 250px 1fr;
}

.sidebar {
    background: #111827;
    color: #f9fafb;
    padding: 22px 16px;
}

.brand {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 24px;
}

.menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 6px;
}

.menu a {
    display: block;
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 8px;
    color: #d1d5db;
}

.menu a:hover,
.menu a.active {
    background: #1f2937;
    color: #ffffff;
}

.main-content {
    padding: 24px;
}

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

.topbar p {
    margin: 4px 0 0;
    color: #6b7280;
}

.cards {
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(4, minmax(160px, 1fr));
    gap: 12px;
}

.card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 16px;
}

.card-label {
    color: #6b7280;
    margin-bottom: 6px;
}

.card-value {
    font-size: 28px;
    font-weight: 700;
}

.panel {
    margin-top: 20px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 16px;
}

.panel h2 {
    margin: 0 0 12px;
}

.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
}

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

th {
    background: #f9fafb;
    color: #6b7280;
    font-weight: 600;
}

.row-best td {
    background: #ecfdf5;
}

.row-out td {
    background: #fee2e2;
}

.login-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: #e5e7eb;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 12px;
    padding: 24px;
}

.login-card h1 {
    margin: 0;
}

.login-subtitle {
    margin: 6px 0 16px;
    color: #6b7280;
}

.login-form {
    display: grid;
    gap: 10px;
}

.login-form input {
    padding: 10px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
}

.form-grid {
    display: grid;
    gap: 10px;
    max-width: 720px;
}

.form-grid input,
.form-grid select,
.inline-form input,
.inline-form select {
    padding: 9px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
}

.inline-form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.btn {
    border: 1px solid #2563eb;
    border-radius: 8px;
    padding: 10px 12px;
    cursor: pointer;
    font-weight: 600;
}

.btn-primary {
    background: #2563eb;
    color: #ffffff;
}

.btn-full {
    width: 100%;
}

.alert {
    margin-bottom: 12px;
    padding: 10px;
    border-radius: 8px;
    font-size: 14px;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.muted {
    color: #6b7280;
    margin-top: 8px;
}

pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 12px;
}

@media (max-width: 900px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .cards {
        grid-template-columns: repeat(2, minmax(140px, 1fr));
    }
}