:root {
    --primary-color: #2b6cb0;
    --primary-dark: #2c5282;
    --secondary-color: #2d3748;
    --text-color: #4a5568;
    --bg-color: #f7fafc;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --success-color: #48bb78;
    --warning-color: #ecc94b;
    --danger-color: #f56565;
    --sidebar-width: 250px;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.5;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

ul {
    list-style: none;
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--white);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100%;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    max-width: 150px;
    height: auto;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.sidebar-nav ul li a {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 0.95rem;
    border-left: 3px solid transparent;
}

.sidebar-nav ul li a:hover,
.sidebar-nav ul li a.active {
    background-color: #ebf8ff;
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.sidebar-nav ul li a i {
    width: 24px;
    margin-right: 10px;
    text-align: center;
}

.logout-link {
    margin-top: auto;
    color: var(--danger-color) !important;
}

.logout-link:hover {
    background-color: #fff5f5 !important;
    border-left-color: var(--danger-color) !important;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
}

.top-bar {
    background-color: var(--white);
    padding: 15px 30px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.content-wrapper {
    padding: 30px;
    flex: 1;
}

/* Components */
.card {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    padding: 25px;
    margin-bottom: 25px;
    border: 1px solid var(--border-color);
}

.card-header {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--secondary-color);
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
    transform: translateY(1px);
}

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--secondary-color);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.1);
}

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

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 600;
    color: var(--secondary-color);
    background-color: #f8fafc;
}

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-admin { background-color: #c3dafe; color: #434190; }
.badge-manager { background-color: #feebc8; color: #744210; }
.badge-employee { background-color: #c6f6d5; color: #22543d; }

.badge-pending { background-color: #feebc8; color: #744210; }
.badge-approved { background-color: #c6f6d5; color: #22543d; }
.badge-rejected { background-color: #fed7d7; color: #822727; }

/* Alerts */
.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.alert-success { background-color: #f0fff4; color: #276749; border-color: #c6f6d5; }
.alert-error { background-color: #fff5f5; color: #c53030; border-color: #fed7d7; }

/* Dashboard Utilities */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-left: 5px solid var(--primary-color);
}

.stat-title {
    color: var(--text-color);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary-color);
}

/* Login Page */
.login-body {
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-card {
    background: var(--white);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    text-align: center;
}

.login-logo {
    max-width: 180px;
    margin-bottom: 30px;
}

.login-footer {
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--text-color);
}

/* Responsive */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-menu-toggle {
        display: block;
        margin-left: auto;
    }
    
    .user-info {
        display: none;
    }
}