:root {
    --primary-color: #FF007A;
    --secondary-color: #FFF1F8;
    --background-color: #F7F8FA;
    --card-background: #FFFFFF;
    --text-primary: #000000;
    --text-secondary: #666666;
    --sidebar-width: 280px;
    --header-height: 70px;
    --mobile-nav-height: 60px;
    --border-radius: 12px;
    --shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* Base Layout */
body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--card-background);
    padding: 20px;
    box-shadow: var(--shadow);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
}

.sidebar-header {
    padding: 20px 0;
    text-align: center;
}

.logo {
    height: 40px;
}

.sidebar-nav {
    margin-top: 30px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius);
    margin-bottom: 8px;
    transition: all 0.3s ease;
    flex-direction: column;
}

.nav-item:hover, .nav-item.active {
    background: #4b5563;
    color: var(--primary-color);
}

.nav-item i {
    margin-right: 12px;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 0;
    transition: margin-left 0.3s ease;
}

@media (min-width: 992px) {
    .main-content {
        margin-left: var(--sidebar-width);
    }
}

/* Headers */
.mobile-header {
    height: var(--header-height);
    background: var(--card-background);
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow);
}

.desktop-header {
    height: var(--header-height);
    background: var(--card-background);
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow);
}

.mobile-logo {
    height: 30px;
}

.menu-toggle {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
}

/* Page Content */
.page-content {
    padding: 20px;
    margin-bottom: var(--mobile-nav-height);
}

@media (min-width: 992px) {
    .page-content {
        padding: 30px;
        margin-bottom: 0;
    }
}

/* Cards */
.card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--shadow);
}

.stats-card {
    padding: 20px;
}

.stats-card .title {
    color: var(--text-secondary);
    font-size: 14px;
}

.stats-card .value {
    font-size: 24px;
    font-weight: 600;
    margin: 10px 0;
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--mobile-nav-height);
    background: var(--card-background);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
    padding: 0 20px;
}

.mobile-nav .nav-item {
    flex-direction: column;
    text-align: center;
    margin: 0;
    padding: 8px;
}

.mobile-nav .nav-item i {
    margin: 0 0 5px;
    font-size: 20px;
}

.mobile-nav .nav-item span {
    font-size: 12px;
}

/* Tables */
.table-responsive {
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.table {
    margin-bottom: 0;
}

/* Forms */
.form-control {
    border-radius: var(--border-radius);
    border: 1px solid rgba(0,0,0,0.1);
    padding: 10px 15px;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--secondary-color);
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    padding: 10px 20px;
}

.btn-primary {
    background: var(--primary-color);
    border: none;
}

.btn-primary:hover {
    background: var(--primary-color);
    opacity: 0.9;
}

/* Utilities */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

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

.username {
    font-weight: 500;
}

/* Mobile Offcanvas Specific Styles */
@media (max-width: 991.98px) {
    .offcanvas {
        z-index: 1045;
    }
    
    .offcanvas-backdrop {
        z-index: 1040;
    }
    
    /* Ensure mobile navbar is properly positioned */
    .navbar.navbar-dark.bg-dark.d-lg-none {
        position: sticky;
        top: 0;
        z-index: 1030;
    }
    
    /* Hide desktop sidebar on mobile */
    .d-none.d-lg-block {
        display: none !important;
    }
}

/* Ensure proper spacing for mobile content */
@media (max-width: 991.98px) {
    .col {
        padding-left: 0;
        padding-right: 0;
    }
    
    /* Add top margin to content to account for mobile navbar */
    .col > div > .row:first-child {
        margin-top: 0;
    }
}