* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
    background: #fafafa;
    color: #222;
    line-height: 1.5;
}

.navbar {
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
    padding: 14px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 17px;
    font-weight: 600;
    color: #222;
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    gap: 4px;
    align-items: center;
}

.navbar-nav a {
    color: #555;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 14px;
}

.navbar-nav a:hover {
    background: #f0f0f0;
    color: #222;
}

.user-info {
    color: #888;
    font-size: 13px;
    margin: 0 8px;
}

.container {
    max-width: 1100px;
    margin: 32px auto;
    padding: 0 24px;
}

.card {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    padding: 24px;
    margin-bottom: 20px;
}

.page-title {
    font-size: 22px;
    font-weight: 600;
    color: #222;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid #d4d4d4;
    border-radius: 4px;
    font-size: 14px;
    background: #fff;
}

.form-control:focus {
    border-color: #222;
    outline: none;
}

.btn {
    display: inline-block;
    padding: 9px 18px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    background: #fff;
    color: #222;
    font-weight: 500;
}

.btn-primary {
    background: #222;
    color: #fff;
    border-color: #222;
}

.btn-primary:hover {
    background: #000;
}

.btn-success {
    background: #1f8a4c;
    color: #fff;
    border-color: #1f8a4c;
}

.btn-success:hover {
    background: #176b3a;
}

.btn-danger {
    background: #fff;
    color: #c33;
    border-color: #d4d4d4;
}

.btn-danger:hover {
    background: #fbecec;
    border-color: #c33;
}

.btn-secondary {
    background: #fff;
    color: #555;
    border-color: #d4d4d4;
}

.btn-secondary:hover {
    background: #f0f0f0;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

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

table.data-grid th {
    background: #fafafa;
    color: #555;
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 1px solid #e5e5e5;
    font-size: 13px;
}

table.data-grid td {
    padding: 10px 12px;
    border-bottom: 1px solid #f0f0f0;
}

table.data-grid tr:hover td {
    background: #fafafa;
}

.alert {
    padding: 10px 14px;
    border-radius: 4px;
    margin-bottom: 14px;
    font-size: 14px;
    border: 1px solid transparent;
}

.alert-success {
    background: #f0f9f3;
    color: #1f6b3a;
    border-color: #cfe9d9;
}

.alert-danger {
    background: #fdf2f2;
    color: #a33;
    border-color: #f0d0d0;
}

.alert-info {
    background: #f3f7fb;
    color: #2c5f8a;
    border-color: #d0dde9;
}

.login-box {
    max-width: 380px;
    margin: 70px auto;
    background: #fff;
    padding: 32px;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
}

.login-box h2 {
    text-align: center;
    color: #222;
    margin-bottom: 22px;
    font-size: 22px;
    font-weight: 600;
}

.text-center { text-align: center; }
.text-right { text-align: right; }

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.stat-box {
    background: #fff;
    padding: 18px;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
}

.stat-box .stat-label {
    font-size: 12px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.stat-box .stat-value {
    font-size: 24px;
    font-weight: 600;
    color: #222;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.menu-card {
    background: #fff;
    padding: 22px;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    text-align: center;
    text-decoration: none;
    color: #222;
}

.menu-card:hover {
    border-color: #222;
}

.menu-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.menu-card p {
    font-size: 13px;
    color: #888;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.product-card {
    background: #fff;
    padding: 18px;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
}

.product-card h4 {
    color: #222;
    font-size: 15px;
    margin-bottom: 6px;
}

.product-card .price {
    font-size: 20px;
    color: #222;
    font-weight: 600;
    margin: 8px 0;
}

.product-card .stock {
    font-size: 12px;
    color: #888;
    margin-bottom: 10px;
}

.timestamp {
    color: #888;
    font-size: 13px;
    margin-bottom: 14px;
}

.summary-box {
    background: #fafafa;
    padding: 14px 16px;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    margin-top: 14px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    font-size: 14px;
}

.summary-row.total {
    border-top: 1px solid #d4d4d4;
    margin-top: 8px;
    padding-top: 10px;
    font-weight: 600;
    font-size: 16px;
}