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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 14px;
}

.breadcrumb a {
    color: #667eea;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 5px;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: #777;
}

.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 15px 20px;
    text-align: center;
}

.card-header h2 {
    font-size: 24px;
    font-weight: 600;
}

.card-header.menu {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
}

.card-body {
    padding: 25px;
}

@media (min-width: 768px) {
    .container {
        max-width: 900px;
    }
}

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

table td {
    padding: 12px;
    vertical-align: middle;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
}

select.form-control {
    height: 40px;
    cursor: pointer;
}

.btn {
    display: inline-block;
    padding: 10px 25px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s;
}

.btn-primary {
    background: #667eea;
    color: #fff;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-secondary {
    background: #95a5a6;
    color: #fff;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-danger {
    background: #e74c3c;
    color: #fff;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-block {
    width: 100%;
}

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

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

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }

.nav-menu {
    list-style: none;
}

.nav-menu li {
    border-bottom: 1px solid #eee;
}

.nav-menu li:last-child {
    border-bottom: none;
}

.nav-menu a {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    transition: background 0.3s;
}

.nav-menu a:hover {
    background: #f8f9fa;
    color: #667eea;
}

.nav-menu a .highlight {
    color: #e74c3c;
    font-weight: 600;
}

.highlight {
    color: #e74c3c;
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

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

.table th {
    background: #667eea;
    color: #fff;
}

.table tr:nth-child(even) {
    background: #f9f9f9;
}

.table-bordered {
    border: 1px solid #ddd;
}

.alert {
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-error {
    background: #fee;
    border: 1px solid #fcc;
    color: #c00;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.menu-container {
    padding: 10px 0;
}

.welcome-box {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 25px;
}

.welcome-icon {
    font-size: 40px;
    margin-right: 15px;
}

.welcome-text p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
}

.welcome-text strong {
    font-size: 20px;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.menu-card {
    display: block;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 20px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
}

.menu-card:hover {
    border-color: #667eea;
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.2);
}

.menu-icon {
    font-size: 32px;
    margin-bottom: 10px;
}

.menu-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.menu-desc {
    font-size: 13px;
    color: #777;
}

.menu-footer {
    text-align: center;
}

.btn-logout {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    padding: 15px 40px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-logout:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(231, 76, 60, 0.4);
}