/* CSS Variables for easy theming */
:root {
    --color-primary: #0066cc;
    --color-primary-hover: #0052a3;
    --color-primary-light: #e6f2ff;
    
    --color-surface: #ffffff;
    --color-background: #f8f9fa;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    
    --color-text: #1a1a1a;
    --color-text-secondary: #6b7280;
    --color-text-tertiary: #9ca3af;
    
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;
    
    --header-height: 64px;
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 64px;
    
    --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);
    
    --transition-base: 150ms ease;
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
}


/* Fix for content overlap with fixed header */
main.col-md-9.ms-sm-auto,
main.col-lg-10 {
    margin-top: var(--header-height);
    padding-top: 1.5rem;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Modern Header */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.header-container {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 24px;
    gap: 24px;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.sidebar-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--color-text);
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-base);
}

.sidebar-toggle:hover {
    background-color: var(--color-border-light);
}

.brand-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.brand-logo {
    height: 60px;
    width: auto;
}

/* Header Search */
.header-search {
    flex: 1;
    max-width: 600px;
    margin: 0 auto;
}

.search-wrapper {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-tertiary);
    pointer-events: none;
}

.search-input {
    width: 100%;
    height: 40px;
    padding: 0 16px 0 44px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background-color: var(--color-background);
    font-size: 14px;
    transition: all var(--transition-base);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.action-button {
    position: relative;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-button:hover {
    background-color: var(--color-border-light);
    color: var(--color-text);
}

.notification-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 18px;
    height: 18px;
    background-color: var(--color-danger);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-button {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 12px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-base);
}

.user-menu-button:hover {
    background-color: var(--color-border-light);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.user-role {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.dropdown-arrow {
    color: var(--color-text-tertiary);
    transition: transform var(--transition-base);
}

.user-menu-button[aria-expanded="true"] .dropdown-arrow {
    transform: rotate(180deg);
}

.user-dropdown {
    min-width: 240px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 8px;
    margin-top: 8px;
}

.dropdown-header {
    padding: 12px 16px;
}

.dropdown-item {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    color: var(--color-text);
    text-decoration: none;
    border-radius: 8px;
    transition: background-color var(--transition-base);
}

.dropdown-item:hover {
    background-color: var(--color-border-light);
}

.dropdown-divider {
    margin: 8px 0;
    border: none;
    border-top: 1px solid var(--color-border);
}

/* Modern Sidebar */
.app-sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--color-surface);
    border-right: 1px solid var(--color-border);
    z-index: 999;
    transition: transform var(--transition-base);
}

.sidebar-content {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav {
    flex: 1;
    padding: 24px 16px;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--transition-base);
    position: relative;
}

.nav-link:hover {
    background-color: var(--color-border-light);
    color: var(--color-text);
}

.nav-link.active {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 600;
}

.nav-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.nav-link:hover .nav-icon {
    transform: translateX(2px);
}

.nav-text {
    flex: 1;
    font-size: 14px;
}

.nav-badge {
    font-size: 12px;
    font-weight: 600;
    padding: 2px 8px;
    background-color: var(--color-danger);
    color: white;
    border-radius: 12px;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--color-border);
}

.test-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background-color: var(--color-warning);
    color: white;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 8px;
    margin-bottom: 16px;
}

/* Main Content Area */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: 20px;
    min-height: calc(100vh - var(--header-height));
    padding: 32px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar-toggle {
        display: flex;
    }
    
    .app-sidebar {
        transform: translateX(-100%);
    }
    
    .app-sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .header-search {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 16px;
    }
    
    .user-info {
        display: none;
    }
    
    .main-content {
        padding: 16px;
    }
}

/* Utility Classes */
.d-none { display: none !important; }
.d-flex { display: flex !important; }
.d-md-flex { 
    @media (min-width: 768px) {
        display: flex !important;
    }
}
.d-lg-none {
    @media (min-width: 1024px) {
        display: none !important;
    }
}

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

.dropdown-menu {
    animation: fadeIn 200ms ease;
}

/* Custom Scrollbar */
.sidebar-content::-webkit-scrollbar {
    width: 6px;
}

.sidebar-content::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background-color: var(--color-border);
    border-radius: 3px;
}

.sidebar-content::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-text-tertiary);
}

/* Cards and Components */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.stat-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
}

/* Tables */
.table {
    width: 100%;
    background-color: var(--color-surface);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table thead th {
    background-color: var(--color-background);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
}

.table tbody td {
    padding: 16px;
    border-bottom: 1px solid var(--color-border-light);
}

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

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

/* Forms */
.form-control,
.form-select {
    width: 100%;
    padding: 10px 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    transition: all var(--transition-base);
    background-color: var(--color-surface);
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-background);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-border-light);
}

@media (min-width: 1264px) {
    .col-lg-9-5 {
        flex: 0 0 79.1667%; /* 9.5/12 = 79.1667% */
        max-width: 79.1667%;
    }
}

@media (min-width: 1024px) and (max-width: 1263.98px) {
    .col-md-8-5 {
        flex: 0 0 70.8333%; /* 8.5/12 = 70.8333% */
        max-width: 70.8333%;
    }
}

.d-hide-above-1024 {
    display: block; /* Show by default */
}

@media (min-width: 1025px) {
    .d-hide-above-1024 {
        display: none; /* Hide for screens larger than 1024px */
    }
}

.main-content {
    margin-left: var(--sidebar-width, 260px);
    width: calc(100% - var(--sidebar-width, 260px));
}

@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
        width: 100%;
    }
}