/* ============================================
   Welfare Association Management System
   Master Stylesheet
   Version: 1.0.0
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Poppins:wght@300;400;500;600;700&display=swap');

/* ============================================
   CSS Variables & Root Styles
   ============================================ */
:root {
    /* Primary Colors */
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #8a9ef0;
    --secondary: #764ba2;
    --secondary-dark: #6a3d91;
    --secondary-light: #8e63b5;
    
    /* Status Colors */
    --success: #28a745;
    --success-dark: #218838;
    --success-light: #71d68c;
    --danger: #dc3545;
    --danger-dark: #c82333;
    --danger-light: #e4606d;
    --warning: #ffc107;
    --warning-dark: #e0a800;
    --warning-light: #ffd449;
    --info: #17a2b8;
    --info-dark: #138496;
    --info-light: #4bc0d0;
    
    /* Neutral Colors */
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 1rem;
    --spacing-4: 1.5rem;
    --spacing-5: 3rem;
    
    /* Fonts */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-circle: 50%;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   Base Styles & Reset
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--gray-900);
    background-color: var(--gray-100);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-3);
    color: var(--gray-800);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-3);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

/* ============================================
   Layout & Container
   ============================================ */
.container-fluid {
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
}

/* ============================================
   Navbar Styles
   ============================================ */
.navbar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    height: 60px;
    position: fixed;
    top: 0;
    right: 0;
    left: 250px;
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-md);
    padding: 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-4);
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: 0.5px;
    color: white !important;
    height: 100%;
    background: rgba(0, 0, 0, 0.1);
    width: 250px;
}

.navbar-toggler {
    border: none;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.15);
    color: white;
    margin-left: var(--spacing-3);
}

.navbar-toggler:hover {
    background: rgba(255, 255, 255, 0.25);
}

.navbar-toggler:focus {
    outline: none;
    box-shadow: none;
}

.navbar-nav {
    height: 100%;
}

.navbar-nav .nav-item {
    height: 100%;
    display: flex;
    align-items: center;
}

.navbar-nav .dropdown-toggle {
    color: white !important;
    padding: 0 var(--spacing-4);
    height: 100%;
    display: flex;
    align-items: center;
    background: transparent;
    border: none;
}

.navbar-nav .dropdown-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.navbar-nav .dropdown-toggle::after {
    margin-left: var(--spacing-2);
}

.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: var(--spacing-2) 0;
    margin-top: var(--spacing-2);
}

.dropdown-item {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: 0.875rem;
    color: var(--gray-700);
}

.dropdown-item:hover {
    background-color: var(--gray-100);
    color: var(--primary);
}

.dropdown-item i {
    margin-right: var(--spacing-2);
    width: 18px;
    text-align: center;
}

/* ============================================
   Sidebar Styles
   ============================================ */
.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 250px;
    z-index: var(--z-fixed);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    color: white;
    transition: left var(--transition-normal);
}

.sidebar-wrapper {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.5) rgba(255,255,255,0.1);
}

/* Custom scrollbar for sidebar */
.sidebar-wrapper::-webkit-scrollbar {
    width: 5px;
}

.sidebar-wrapper::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.1);
}

.sidebar-wrapper::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.5);
    border-radius: var(--radius-lg);
}

.sidebar-wrapper::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.8);
}

/* Sidebar Logo Section */
.sidebar .text-center {
    padding: var(--spacing-4) var(--spacing-3) var(--spacing-3);
}

.sidebar .text-center img {
    max-width: 100px;
    margin-bottom: var(--spacing-2);
}

.sidebar .text-center h6 {
    color: white;
    margin: var(--spacing-2) 0 0;
    font-weight: 600;
}

.sidebar .text-center small {
    color: rgba(255,255,255,0.7);
}

/* Sidebar User Info */
.sidebar .user-info {
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    margin: 0 var(--spacing-3) var(--spacing-3);
    padding: var(--spacing-3) !important;
    backdrop-filter: blur(5px);
}

.sidebar .avatar {
    width: 45px;
    height: 45px;
    background: white !important;
    color: var(--primary) !important;
    border-radius: var(--radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.sidebar .user-info .fw-bold {
    color: white;
    font-size: 0.9rem;
}

.sidebar .user-info .text-white-50 {
    color: rgba(255,255,255,0.7) !important;
    font-size: 0.75rem;
}

/* Sidebar Navigation */
.sidebar .nav {
    padding: 0 var(--spacing-2);
}

.sidebar .nav-item {
    margin-bottom: 2px;
    list-style: none;
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.85);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    font-weight: 500;
    position: relative;
}

.sidebar .nav-link i {
    margin-right: var(--spacing-3);
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
    transition: transform var(--transition-fast);
}

.sidebar .nav-link span {
    flex: 1;
    white-space: nowrap;
}

.sidebar .nav-link:hover {
    background: rgba(255,255,255,0.15);
    color: white;
    transform: translateX(5px);
}

.sidebar .nav-link:hover i {
    transform: scale(1.1);
}

.sidebar .nav-link.active {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.sidebar .nav-link.active i {
    color: var(--primary);
}

.sidebar .nav-link .ms-auto i {
    margin-right: 0;
    font-size: 0.8rem;
    opacity: 0.8;
}

/* Sidebar Footer */
.sidebar-footer {
    margin-top: auto;
    padding: var(--spacing-3) 0;
}

.sidebar-footer hr {
    margin: var(--spacing-2) var(--spacing-3);
    border-color: rgba(255,255,255,0.2);
}

.sidebar-footer .small {
    color: rgba(255,255,255,0.6) !important;
    font-size: 0.7rem;
}

.sidebar-footer i {
    margin-right: 4px;
}

/* Sidebar Close Button (Mobile) */
#sidebarClose {
    position: absolute;
    top: var(--spacing-3);
    right: var(--spacing-3);
    z-index: var(--z-modal);
    background: rgba(255,255,255,0.2) !important;
    opacity: 1;
    padding: var(--spacing-2);
    border-radius: var(--radius-circle);
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#sidebarClose:hover {
    background: rgba(255,255,255,0.3) !important;
}

/* Sidebar Overlay (Mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: calc(var(--z-fixed) - 1);
    backdrop-filter: blur(3px);
}

.sidebar-overlay.show {
    display: block;
}

/* ============================================
   Main Content Area
   ============================================ */
main {
    margin-left: 250px;
    padding: 70px var(--spacing-4) var(--spacing-4);
    min-height: 100vh;
    background-color: var(--gray-100);
    transition: margin-left var(--transition-normal);
}

/* ============================================
   Cards
   ============================================ */
.card {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    margin-bottom: var(--spacing-4);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-header {
    background-color: white;
    border-bottom: 1px solid var(--gray-200);
    padding: var(--spacing-3) var(--spacing-4);
    font-weight: 600;
    color: var(--gray-700);
}

.card-header:first-child {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card-body {
    padding: var(--spacing-4);
}

.card-footer {
    background-color: white;
    border-top: 1px solid var(--gray-200);
    padding: var(--spacing-3) var(--spacing-4);
}

/* Dashboard Cards */
.dashboard-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    transition: all var(--transition-normal);
    height: 100%;
    border: none;
    box-shadow: var(--shadow-md);
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.dashboard-card .icon {
    font-size: 2.5rem;
    opacity: 0.8;
}

.dashboard-card .value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}

.dashboard-card .label {
    font-size: 0.9rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Stats Cards */
.stats-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    transition: all var(--transition-normal);
    height: 100%;
    border: none;
    box-shadow: var(--shadow-md);
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stats-card .icon {
    font-size: 2.5rem;
    opacity: 0.8;
}

.stats-card .value {
    font-size: 1.8rem;
    font-weight: 700;
}

.stats-card .label {
    font-size: 0.9rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================
   Tables
   ============================================ */
.table-responsive {
    border-radius: var(--radius-lg);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    margin-bottom: 0;
    background-color: white;
}

.table thead th {
    background-color: var(--gray-100);
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--gray-300);
    white-space: nowrap;
    padding: var(--spacing-3) var(--spacing-2);
    vertical-align: middle;
}

.table tbody td {
    padding: var(--spacing-3) var(--spacing-2);
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-200);
}

.table tbody tr:hover {
    background-color: rgba(102, 126, 234, 0.05);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0,0,0,0.02);
}

.table-bordered {
    border: 1px solid var(--gray-300);
}

.table-bordered th,
.table-bordered td {
    border: 1px solid var(--gray-300);
}

/* Fixed first column for horizontal scroll */
.table th:first-child,
.table td:first-child {
    position: sticky;
    left: 0;
    background-color: white;
    z-index: 2;
    box-shadow: 2px 0 5px -2px rgba(0,0,0,0.1);
}

.table thead th:first-child {
    background-color: var(--gray-100);
    z-index: 3;
}

/* Fixed second column for better navigation */
.table th:nth-child(2),
.table td:nth-child(2) {
    position: sticky;
    left: 50px;
    background-color: white;
    z-index: 1;
    box-shadow: 2px 0 5px -2px rgba(0,0,0,0.1);
}

.table thead th:nth-child(2) {
    background-color: var(--gray-100);
    z-index: 2;
}

/* DataTables Customization */
.dataTables_wrapper {
    padding: var(--spacing-3);
}

.dataTables_length select,
.dataTables_filter input {
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: var(--spacing-2) var(--spacing-3);
    margin: 0 var(--spacing-2);
}

.dataTables_length select:focus,
.dataTables_filter input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.dataTables_info {
    padding: var(--spacing-3) 0;
    color: var(--gray-600);
}

.dataTables_paginate {
    padding: var(--spacing-3) 0;
}

.paginate_button {
    padding: var(--spacing-2) var(--spacing-3);
    margin: 0 2px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: white;
    color: var(--gray-700);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.paginate_button:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
}

.paginate_button.current {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* ============================================
   Forms
   ============================================ */
.form-label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-2);
    font-size: 0.9rem;
}

.form-label i {
    margin-right: var(--spacing-1);
    color: var(--gray-600);
}

.form-label.required:after {
    content: " *";
    color: var(--danger);
    font-weight: bold;
}

.form-control,
.form-select {
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-control.is-valid,
.form-select.is-valid {
    border-color: var(--success);
}

.input-group-text {
    background-color: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-right: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    color: var(--gray-700);
}

.input-group .form-control {
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.input-group .form-control:focus {
    border-left: none;
    box-shadow: none;
    border-color: var(--gray-300);
}

.input-group:focus-within .input-group-text {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    border-right: none;
}

.input-group:focus-within .form-control {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    border-left: none;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    border-radius: var(--radius-md);
    padding: var(--spacing-2) var(--spacing-4);
    font-weight: 500;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    border: none;
}

.btn i {
    font-size: 1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.5);
}

/* Button Variants */
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #34ce57 100%);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--success-dark) 0%, #28a745 100%);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #e74c3c 100%);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--danger-dark) 0%, #c0392b 100%);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #ffdb6e 100%);
    color: var(--gray-900);
}

.btn-warning:hover {
    background: linear-gradient(135deg, var(--warning-dark) 0%, #e0a800 100%);
}

.btn-info {
    background: linear-gradient(135deg, var(--info) 0%, #41c0d0 100%);
    color: white;
}

.btn-info:hover {
    background: linear-gradient(135deg, var(--info-dark) 0%, #138496 100%);
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

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

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-1) var(--spacing-2);
    font-size: 0.75rem;
}

.btn-sm i {
    font-size: 0.8rem;
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-5);
    font-size: 1rem;
}

.btn-lg i {
    font-size: 1.2rem;
}

/* Button Groups */
.btn-group {
    gap: 2px;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* ============================================
   Badges
   ============================================ */
.badge {
    padding: var(--spacing-1) var(--spacing-2);
    font-weight: 500;
    border-radius: var(--radius-md);
    font-size: 0.7rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge i {
    font-size: 0.7rem;
}

.badge.bg-primary { background: var(--primary) !important; color: white; }
.badge.bg-success { background: var(--success) !important; color: white; }
.badge.bg-danger { background: var(--danger) !important; color: white; }
.badge.bg-warning { background: var(--warning) !important; color: var(--gray-900); }
.badge.bg-info { background: var(--info) !important; color: white; }
.badge.bg-secondary { background: var(--gray-600) !important; color: white; }

/* ============================================
   Alerts
   ============================================ */
.alert {
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--spacing-3) var(--spacing-4);
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.alert i {
    font-size: 1.2rem;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success-dark);
    border-left: 4px solid var(--success);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger-dark);
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning-dark);
    border-left: 4px solid var(--warning);
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    color: var(--info-dark);
    border-left: 4px solid var(--info);
}

.alert-dismissible .btn-close {
    padding: var(--spacing-3) var(--spacing-4);
}

/* ============================================
   Progress Bars
   ============================================ */
.progress {
    height: 8px;
    border-radius: var(--radius-lg);
    background-color: var(--gray-200);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-lg);
    transition: width 0.6s ease;
}

/* ============================================
   Modals
   ============================================ */
.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-bottom: none;
    padding: var(--spacing-4);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.modal-header .btn-close:hover {
    opacity: 1;
}

.modal-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.modal-body {
    padding: var(--spacing-4);
}

.modal-footer {
    border-top: 1px solid var(--gray-200);
    padding: var(--spacing-3) var(--spacing-4);
}

/* ============================================
   Tabs
   ============================================ */
.nav-tabs {
    border-bottom: 1px solid var(--gray-300);
    margin-bottom: var(--spacing-4);
}

.nav-tabs .nav-link {
    color: var(--gray-700);
    font-weight: 500;
    padding: var(--spacing-2) var(--spacing-4);
    border: none;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.nav-tabs .nav-link:hover {
    color: var(--primary);
    border-bottom-color: var(--primary-light);
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: transparent;
    font-weight: 600;
}

.nav-tabs .nav-link i {
    margin-right: var(--spacing-2);
}

.tab-content {
    padding: var(--spacing-4) 0;
}

/* ============================================
   Icons & Icon Circles
   ============================================ */
.icon-circle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-circle i {
    font-size: 1.2rem;
}

.icon-circle-sm {
    width: 30px;
    height: 30px;
}

.icon-circle-sm i {
    font-size: 0.9rem;
}

.icon-circle-lg {
    width: 50px;
    height: 50px;
}

.icon-circle-lg i {
    font-size: 1.5rem;
}

/* ============================================
   Utilities
   ============================================ */
/* Text Colors */
.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }

/* Backgrounds */
.bg-primary-subtle { background-color: rgba(102, 126, 234, 0.1); }
.bg-success-subtle { background-color: rgba(40, 167, 69, 0.1); }
.bg-danger-subtle { background-color: rgba(220, 53, 69, 0.1); }
.bg-warning-subtle { background-color: rgba(255, 193, 7, 0.1); }
.bg-info-subtle { background-color: rgba(23, 162, 184, 0.1); }

/* Spacing Utilities */
.mt-auto { margin-top: auto; }
.mb-auto { margin-bottom: auto; }
.ms-auto { margin-left: auto; }
.me-auto { margin-right: auto; }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }
.cursor-not-allowed { cursor: not-allowed; }

/* ============================================
   Responsive Design
   ============================================ */
@media (min-width: 768px) {
    .sidebar {
        left: 0;
    }
    
    .navbar-toggler,
    #sidebarClose {
        display: none !important;
    }
}

@media (max-width: 767px) {
    .sidebar {
        left: -280px;
        width: 85%;
        max-width: 300px;
    }
    
    .sidebar.show {
        left: 0;
    }
    
    .navbar {
        left: 0;
    }
    
    .navbar-brand {
        width: auto;
        background: transparent;
        margin: 0 auto;
    }
    
    main {
        margin-left: 0;
        padding: 70px var(--spacing-3) var(--spacing-3);
    }
    
    .table th:first-child,
    .table td:first-child,
    .table th:nth-child(2),
    .table td:nth-child(2) {
        position: static;
        box-shadow: none;
    }
    
    .dashboard-card .value {
        font-size: 1.5rem;
    }
    
    .stats-card .value {
        font-size: 1.4rem;
    }
    
    .card-body {
        padding: var(--spacing-3);
    }
}

@media (max-width: 767px) and (orientation: portrait) {
    .sidebar .nav-link {
        padding: var(--spacing-3) var(--spacing-4);
        font-size: 1rem;
    }
    
    .sidebar .nav-link i {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .btn-group {
        flex-wrap: wrap;
    }
    
    .btn-group .btn {
        flex: 1 1 auto;
        margin: 2px;
        border-radius: var(--radius-md) !important;
    }
    
    .table-responsive {
        font-size: 0.8rem;
    }
    
    .badge {
        font-size: 0.65rem;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .sidebar,
    .navbar,
    .btn-toolbar,
    .no-print {
        display: none !important;
    }
    
    main {
        margin-left: 0;
        padding: 20px;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
    
    .table {
        border-collapse: collapse;
    }
    
    .table th,
    .table td {
        border: 1px solid var(--gray-300);
    }
}

/* ============================================
   Custom Scrollbar for Tables
   ============================================ */
.table-responsive::-webkit-scrollbar {
    height: 8px;
    background-color: var(--gray-200);
}

.table-responsive::-webkit-scrollbar-thumb {
    background-color: var(--gray-500);
    border-radius: var(--radius-lg);
}

.table-responsive::-webkit-scrollbar-thumb:hover {
    background-color: var(--gray-600);
}

.table-responsive::-webkit-scrollbar-track {
    background-color: var(--gray-200);
    border-radius: var(--radius-lg);
}

/* ============================================
   Animation Keyframes
   ============================================ */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner {
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--primary);
    border-radius: var(--radius-circle);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 4px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}