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

:root {
    --primary-color: #2c5530;
    --secondary-color: #4a7c59;
    --accent-color: #8fbc8f;
    --danger-color: #dc3545;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --dark-color: #333;
    --light-color: #f8f9fa;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: white;
    box-shadow: var(--shadow);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--primary-color);
    white-space: nowrap;
    flex-shrink: 0;
    text-decoration: none;
    transition: opacity 0.3s;
    cursor: pointer;
}

.nav-brand:hover {
    opacity: 0.8;
}

.nav-brand i {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    margin: 0;
    padding: 0;
    align-items: center;
    flex-wrap: nowrap;
    overflow-x: auto;
    flex: 1;
    justify-content: flex-end;
}

.nav-menu li {
    flex-shrink: 0;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-color);
    padding: 8px 12px;
    border-radius: 5px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    white-space: nowrap;
}

.nav-menu a i {
    font-size: 1rem;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: var(--primary-color);
    color: white;
}

.user-menu {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-shrink: 0;
    margin-left: 10px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
}

.role-badge {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 500;
    white-space: nowrap;
}

.role-badge.role-admin {
    background: #dc3545;
    color: white;
}

.role-badge.role-manager {
    background: #ffc107;
    color: #333;
}

.role-badge.role-staff {
    background: #28a745;
    color: white;
}

.logout-btn {
    background: var(--danger-color);
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    font-size: 0.85rem;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logout-btn:hover {
    background: #c82333;
}

/* Ẩn text trên màn hình nhỏ, chỉ hiện icon */
@media (max-width: 1024px) {
    .nav-menu a span.nav-text {
        display: none;
    }
    
    .nav-menu a {
        padding: 8px 10px;
        min-width: 40px;
        justify-content: center;
    }
    
    .user-info span:not(.role-badge) {
        display: none;
    }
    
    .logout-btn span,
    .user-menu a span.nav-text {
        display: none;
    }
    
    .user-menu a.btn {
        padding: 8px 10px;
        min-width: 40px;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-wrap: wrap;
    }
    
    .nav-menu {
        width: 100%;
        order: 3;
        margin-top: 10px;
        padding-bottom: 5px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu::-webkit-scrollbar {
        height: 4px;
    }
    
    .nav-menu::-webkit-scrollbar-thumb {
        background: #ccc;
        border-radius: 2px;
    }
    
    .user-menu {
        margin-left: auto;
        order: 2;
    }
}

/* Main Content */
.main-content {
    padding: 30px 0;
}

/* Cards */
.card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.card-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--primary-color);
}

.stat-card.income::before {
    background: var(--success-color);
}

.stat-card.expense::before {
    background: var(--danger-color);
}

.stat-card.profit::before {
    background: var(--primary-color);
}

.stat-card.revenue::before {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--dark-color);
}

.stat-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
    opacity: 0.2;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

small {
    display: block;
    margin-top: 5px;
}

small i {
    margin-right: 5px;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(44, 85, 48, 0.3);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover {
    background: #218838;
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-2px);
}

/* Table */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--light-color);
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.table tbody tr:hover {
    background: var(--light-color);
}

.text-success {
    color: var(--success-color);
    font-weight: 600;
}

.text-danger {
    color: var(--danger-color);
    font-weight: 600;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid var(--danger-color);
}

/* Statistics Filters */
.filter-group {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--dark-color);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.filter-tabs input[type="radio"] {
    display: none;
}

.filter-tab {
    padding: 12px 20px;
    border: none;
    background: transparent;
    border-radius: 5px 5px 0 0;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--dark-color);
    font-weight: 500;
    position: relative;
    bottom: -2px;
}

.filter-tab:hover {
    background: var(--light-color);
    color: var(--primary-color);
}

.filter-tabs input[type="radio"]:checked + .filter-tab {
    background: white;
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
    font-weight: 600;
}

.filter-content {
    padding: 20px 0;
    background: white;
    border-radius: 0 0 5px 5px;
}

/* Footer */
.footer {
    background: white;
    padding: 20px 0;
    text-align: center;
    color: #666;
    margin-top: 50px;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .filter-group {
        flex-direction: column;
    }

    .filter-btn {
        width: 100%;
    }
}