/* CSS Document */

/* 
 * Student Union Election System - Main Stylesheet
 * Version: 1.0.0
 * Author: Election System Team
 */

/* ==============================================
   CSS Variables (Custom Properties)
   ============================================== */
:root {
    /* Color Palette */
    --primary-color: #4e54c8;
    --primary-dark: #3a3fa5;
    --primary-light: #8f94fb;
    --secondary-color: #667eea;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --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;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-warning: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-dark: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    
    /* Typography */
    --font-family-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-family-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.25rem;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow: 0 5px 15px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition: 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
   ============================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-base);
    color: var(--gray-800);
    background-color: var(--gray-100);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

h1 {
    font-size: 2.5rem;
    line-height: 1.2;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

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

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

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

.text-primary {
    color: var(--primary-color) !important;
}

.text-success {
    color: var(--success-color) !important;
}

.text-warning {
    color: var(--warning-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

.text-info {
    color: var(--info-color) !important;
}

.text-muted {
    color: var(--gray-600) !important;
}

.lead {
    font-size: 1.25rem;
    font-weight: var(--font-weight-light);
}

/* ==============================================
   Layout & Container
   ============================================== */
.container-custom {
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
    position: relative;
}

.section-title {
    position: relative;
    padding-bottom: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
}

.section-title.text-center::after {
    left: 50%;
    transform: translateX(-50%);
}

/* ==============================================
   Navigation
   ============================================== */
.navbar-brand {
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-brand .brand-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.nav-link {
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transition: all var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
}

.dropdown-item {
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 2px 0;
    transition: all var(--transition-fast);
}

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

/* ==============================================
   Cards
   ============================================== */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: all var(--transition);
    overflow: hidden;
    background: white;
}

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

.card-header {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: var(--spacing-lg);
    font-weight: var(--font-weight-bold);
    font-size: 1.25rem;
}

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

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

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

.card-gradient .card-title,
.card-gradient .card-text {
    color: white;
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.card-stat {
    text-align: center;
    padding: var(--spacing-xl);
}

.card-stat .stat-number {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==============================================
   Buttons
   ============================================== */
.btn {
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: left var(--transition);
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), #5a3f8c);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border-radius: var(--border-radius-lg);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-rounded {
    border-radius: 50px;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ==============================================
   Forms
   ============================================== */
.form-control,
.form-select {
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-size: var(--font-size-base);
    transition: all var(--transition);
    background: white;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(78, 84, 200, 0.25);
    outline: none;
}

.form-label {
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

.form-text {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.input-group {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.input-group .form-control {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.input-group .btn {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* ==============================================
   Tables
   ============================================== */
.table {
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table thead th {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody td {
    padding: 1rem;
    border-top: 1px solid var(--gray-200);
    vertical-align: middle;
}

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

.table-hover tbody tr:hover {
    background-color: rgba(78, 84, 200, 0.05);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--gray-100);
}

/* ==============================================
   Alerts & Notifications
   ============================================== */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.alert::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.alert-success::before {
    background-color: var(--success-color);
}

.alert-warning::before {
    background-color: var(--warning-color);
}

.alert-danger::before {
    background-color: var(--danger-color);
}

.alert-info::before {
    background-color: var(--info-color);
}

.alert-primary::before {
    background-color: var(--primary-color);
}

.toast {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    background: white;
}

.toast-header {
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: var(--spacing-md);
}

.toast-body {
    padding: var(--spacing-md);
}

/* ==============================================
   Badges & Labels
   ============================================== */
.badge {
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: var(--font-weight-bold);
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-pill {
    border-radius: 50px;
}

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

.badge-success {
    background: var(--gradient-success);
    color: white;
}

.badge-warning {
    background: var(--gradient-warning);
    color: var(--gray-900);
}

.badge-danger {
    background: linear-gradient(135deg, #ff6b6b, #ff8e8e);
    color: white;
}

.badge-info {
    background: linear-gradient(135deg, #4ecdc4, #44a08d);
    color: white;
}

/* ==============================================
   Progress Bars
   ============================================== */
.progress {
    height: 0.75rem;
    border-radius: 50px;
    background-color: var(--gray-200);
    overflow: hidden;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}

.progress-bar {
    border-radius: 50px;
    background: var(--gradient-primary);
    transition: width var(--transition-slow);
}

.progress-bar-striped {
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 1rem 1rem;
}

.progress-bar-animated {
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    0% { background-position: 1rem 0; }
    100% { background-position: 0 0; }
}

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

.modal-header {
    background: var(--gradient-primary);
    color: white;
    border-bottom: none;
    padding: var(--spacing-lg);
}

.modal-title {
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
}

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

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

/* ==============================================
   Tabs & Navigation
   ============================================== */
.nav-tabs {
    border-bottom: 2px solid var(--gray-200);
}

.nav-tabs .nav-link {
    border: none;
    background: none;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
    padding: 0.75rem 1.5rem;
    margin: 0;
    position: relative;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.nav-tabs .nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;

    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.nav-tabs .nav-link:hover::after,
.nav-tabs .nav-link.active::after {
    transform: scaleX(1);
}

.nav-tabs .nav-link:hover,
.nav-tabs .nav-link.active {
    color: var(--primary-color);
    background: none;
    border: none;
}

.tab-content {
    padding: var(--spacing-lg);
    background: white;
    border-radius: 0 var(--border-radius) var(--border-radius) var(--border-radius);
    box-shadow: var(--shadow);
}

/* ==============================================
   Pagination
   ============================================== */
.pagination {
    display: flex;
    gap: var(--spacing-xs);
}

.page-link {
    border: none;
    color: var(--gray-700);
    background: white;
    border-radius: var(--border-radius) !important;
    padding: 0.75rem 1rem;
    transition: all var(--transition);
    font-weight: var(--font-weight-medium);
}

.page-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.page-item.active .page-link {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.page-item.disabled .page-link {
    background: var(--gray-200);
    color: var(--gray-600);
}

/* ==============================================
   Utility Classes
   ============================================== */
.bg-gradient-primary {
    background: var(--gradient-primary) !important;
    color: white;
}

.bg-gradient-secondary {
    background: var(--gradient-secondary) !important;
    color: white;
}

.bg-gradient-success {
    background: var(--gradient-success) !important;
    color: white;
}

.bg-gradient-warning {
    background: var(--gradient-warning) !important;
    color: var(--gray-900);
}

.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow {
    box-shadow: var(--shadow) !important;
}

.shadow-lg {
    box-shadow: var(--shadow-lg) !important;
}

.rounded {
    border-radius: var(--border-radius) !important;
}

.rounded-lg {
    border-radius: var(--border-radius-lg) !important;
}

.rounded-xl {
    border-radius: var(--border-radius-xl) !important;
}

.overflow-hidden {
    overflow: hidden;
}

.position-relative {
    position: relative !important;
}

.position-absolute {
    position: absolute !important;
}

.z-index-1 {
    z-index: 1;
}

.z-index-2 {
    z-index: 2;
}

.z-index-3 {
    z-index: 3;
}

/* ==============================================
   Animations
   ============================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

.float {
    animation: float 3s ease-in-out infinite;
}

/* ==============================================
   Custom Components
   ============================================== */
/* Candidate Card */
.candidate-card {
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition);
    overflow: hidden;
    background: white;
    height: 100%;
}

.candidate-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.candidate-photo {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 3px solid var(--primary-color);
}

.candidate-info {
    padding: var(--spacing-lg);
}

.candidate-name {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
}

.candidate-position {
    color: var(--primary-color);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
}

.candidate-department {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

/* Voting Progress */
.voting-progress {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.progress-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition);
}

.progress-step.active {
    background: rgba(78, 84, 200, 0.1);
    border-left: 4px solid var(--primary-color);
}

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

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: var(--gray-700);
}

.progress-step.active .step-number {
    background: var(--primary-color);
    color: white;
}

.progress-step.completed .step-number {
    background: var(--success-color);
    color: white;
}

/* Election Stats */
.election-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-primary);
    color: white;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-lg);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -9px;
    top: 0;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--primary-color);
}

.timeline-date {
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.timeline-content {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

/* ==============================================
   Responsive Design
   ============================================== */
@media (max-width: 1200px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 992px) {
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .navbar-nav {
        margin-top: var(--spacing-md);
    }
    
    .election-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .container-custom {
        padding: 0 var(--spacing-sm);
    }
    
    .card-stat .stat-number {
        font-size: 2rem;
    }
    
    .election-stats {
        grid-template-columns: 1fr;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .table-responsive {
        margin: 0 -0.75rem;
        padding: 0 0.75rem;
    }
}

@media (max-width: 576px) {
    :root {
        --font-size-base: 0.9375rem;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.375rem; }
    h3 { font-size: 1.125rem; }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .card-body,
    .card-header,
    .card-footer {
        padding: var(--spacing-md);
    }
    
    .stat-item {
        padding: var(--spacing-lg);
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* ==============================================
   Print Styles
   ============================================== */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
        font-size: 12pt;
    }
    
    .container {
        width: 100% !important;
        max-width: none !important;
    }
    
    .card {
        border: 1px solid #ddd !important;
        box-shadow: none !important;
    }
    
    .btn,
    .navbar,
    .footer {
        display: none !important;
    }
    
    a {
        color: black !important;
        text-decoration: underline;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        font-weight: normal;
    }
}

/* ==============================================
   Accessibility
   ============================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.focus-visible:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    z-index: var(--z-popover);
    transition: top var(--transition);
}

.skip-to-content:focus {
    top: 0;
}

/* ==============================================
   Dark Mode Support (Future Enhancement)
   ============================================== */
@media (prefers-color-scheme: dark) {
    :root {
        --gray-100: #212529;
        --gray-200: #343a40;
        --gray-300: #495057;
        --gray-400: #6c757d;
        --gray-500: #adb5bd;
        --gray-600: #ced4da;
        --gray-700: #dee2e6;
        --gray-800: #e9ecef;
        --gray-900: #f8f9fa;
    }
    
    body {
        background-color: #121212;
        color: var(--gray-800);
    }
    
    .card,
    .modal-content,
    .tab-content,
    .stat-item,
    .timeline-content {
        background: var(--gray-100);
    }
    
    .table {
        background: var(--gray-100);
        color: var(--gray-800);
    }
    
    .table thead th {
        background: var(--gray-200);
        color: var(--gray-800);
    }
}

/* ==============================================
   Loading States
   ============================================== */
.loading {
    position: relative;
    min-height: 100px;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid var(--gray-300);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-300) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}