:root {
    --primary: #4F46E5; /* Indigo 600 */
    --primary-light: #EEF2FF;
    --primary-dark: #3730A3;
    --success: #10B981;
    --success-light: #D1FAE5;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --danger: #EF4444;
    --danger-light: #FEE2E2;
    --text-main: #111827; /* Gray 900 */
    --text-muted: #6B7280; /* Gray 500 */
    --bg-main: #F9FAFB;
    --bg-card: #FFFFFF;
    --border: #E5E7EB;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-premium: rgba(17, 12, 46, 0.15) 0px 48px 100px 0px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow-x: hidden;
}

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

/* Sidebar styling */
.sidebar {
    width: 260px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    position: relative;
    z-index: 50;
    transition: width var(--transition);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px 24px 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), #818CF8);
    color: white;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.logo h2 {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-main), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-muted);
    cursor: pointer;
}

/* Role Badge in Sidebar */
.user-role-badge {
    margin: 0 24px 24px 24px;
    background-color: var(--primary-light);
    color: var(--primary);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px dashed var(--primary);
}

/* Navigation Menu */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0 16px;
}

.sidebar-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    padding: 12px 16px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    text-decoration: none;
}

.nav-item:hover {
    background-color: rgba(79, 70, 229, 0.05);
    color: var(--primary);
    transform: translateX(4px);
}

.nav-item.active {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 24px;
    border-top: 1px solid var(--border);
}
.sidebar-footer .nav-link {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}
.sidebar-footer .nav-link:hover {
    color: var(--primary);
}

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Header */
.top-header {
    height: 80px;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-main);
}

/* Role Selector */
.role-switcher {
    margin-right: 16px;
    position: relative;
}

.role-select {
    appearance: none;
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    padding: 8px 36px 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
    cursor: pointer;
    outline: none;
    transition: var(--transition);
}

.role-select:hover {
    border-color: var(--primary);
}

.role-select:focus {
    box-shadow: 0 0 0 3px var(--primary-light);
    border-color: var(--primary);
}

.role-switcher::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-muted);
}

/* Header Right Side Buttons */
.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.icon-btn {
    background: var(--bg-main);
    border: 1px solid var(--border);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.icon-btn:hover {
    color: var(--primary);
    border-color: var(--primary-light);
    background-color: var(--primary-light);
    transform: scale(1.05);
}

.badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: var(--danger);
    color: white;
    font-size: 0.65rem;
    font-weight: bold;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 2px solid var(--bg-card);
}

/* User Profile Dropdown Button */
.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 4px;
    border-radius: 30px;
    transition: var(--transition);
}
.user-profile:hover {
    background-color: var(--bg-main);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-sm);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.user-profile i {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-left: 4px;
}

/* Dynamic View Container */
.view-container {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
    background-color: var(--bg-main);
}

/* Section Wrapper (Dynamic Content) */
.section {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}
.section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Widgets / Dashboard Cards */
.widgets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.widget-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.widget-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--primary-light);
}

.widget-info h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 8px;
}

.widget-info .value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.widget-trend {
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.trend-up {
    color: var(--success);
}
.trend-down {
    color: var(--danger);
}

.widget-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}
.icon-blue { background: var(--primary-light); color: var(--primary); }
.icon-green { background: var(--success-light); color: var(--success); }
.icon-orange { background: var(--warning-light); color: var(--warning); }
.icon-red { background: var(--danger-light); color: var(--danger); }

/* Common Table Styles */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 24px;
}

.panel-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
    transform: translateY(-2px);
}

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

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

th, td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background-color: var(--bg-main);
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    font-size: 0.95rem;
    color: var(--text-main);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: var(--bg-main);
}

.status-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}
.status-active {
    background-color: var(--success-light);
    color: var(--success);
}
.status-inactive {
    background-color: var(--danger-light);
    color: var(--danger);
}
.status-pending {
    background-color: var(--warning-light);
    color: var(--warning);
}

/* Action Buttons */
.action-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 4px;
}
.action-btn:hover {
    background: var(--bg-main);
    color: var(--primary);
    border-color: var(--primary);
}
.action-btn.delete:hover {
    color: var(--danger);
    border-color: var(--danger);
}

/* Specific Views Containers */
.setting-tabs {
    display: flex;
    gap: 32px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
}
.setting-tab {
    padding-bottom: 12px;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
}
.setting-tab.active {
    color: var(--primary);
}
.setting-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
}

.setting-form-group {
    margin-bottom: 20px;
}
.setting-form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
}
.setting-form-group input, .setting-form-group select, .setting-form-group textarea {
    width: 100%;
    max-width: 480px;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
}
.setting-form-group input:focus, .setting-form-group select:focus, .setting-form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* Blank Slate Info */
.blank-slate {
    text-align: center;
    padding: 64px 20px;
    color: var(--text-muted);
}
.blank-slate i {
    font-size: 4rem;
    color: var(--border);
    margin-bottom: 16px;
}
.blank-slate h4 {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 8px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -260px;
        height: 100vh;
    }
    .sidebar.open {
        left: 0;
        box-shadow: var(--shadow-premium);
    }
    .mobile-toggle {
        display: block;
    }
    .top-header {
        padding: 0 16px;
    }
    .view-container {
        padding: 16px;
    }
}