/* CSS Variables */
:root {
    --primary-color: #3B82F6;
    --primary-dark: #2563EB;
    --primary-light: #93C5FD;
    --secondary-color: #14B8A6;
    --secondary-dark: #0F766E;
    --accent-color: #F97316;
    --success-color: #22C55E;
    --warning-color: #EAB308;
    --error-color: #EF4444;
    --info-color: #06B6D4;
    
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    --white: #FFFFFF;
    --black: #000000;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 0.75rem;
    
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
}

/* Base Styles */
* {
    margin: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--gray-800);
    background-color: var(--gray-50);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--gray-600);
}

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

a:hover {
    color: var(--primary-dark);
}

/* Highlight specifically the Interest Calculation menu */
.nav-link.interest-link.active {
  background-color: #007bff; /* Blue highlight */
  color: #fff !important;
  font-weight: 600;
  border-left: 4px solid #ffc107; /* Yellow accent */
  box-shadow: 0 0 10px rgba(0, 123, 255, 0.3);
}

/* Icon and text color fix */
.nav-link.interest-link.active i,
.nav-link.interest-link.active .nav-text {
  color: #fff !important;
}

/* On hover, keep same highlight */
.nav-link.interest-link:hover {
  background-color: #0069d9;
  color: #fff !important;
}


/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border: 1px solid transparent;
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

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

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

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

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

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

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

.btn-danger {
    background-color: var(--error-color);
    color: var(--white);
    border-color: var(--error-color);
}

.btn-outline {
    background-color: transparent;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-outline:hover {
    background-color: var(--gray-50);
    border-color: var(--gray-400);
    color: var(--gray-800);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-6);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
    margin-bottom: var(--spacing-2);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
input[type="date"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-family: inherit;
    background-color: var(--white);
    transition: all var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

/* Checkbox Styles */
.checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    cursor: pointer;
    font-size: var(--font-size-sm);
}

.checkbox input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkmark {
    position: relative;
    width: 18px;
    height: 18px;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    background-color: var(--white);
    transition: all var(--transition-fast);
}

.checkbox input[type="checkbox"]:checked + .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-size: 12px;
    font-weight: bold;
}

/* Toggle Switch Styles */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.toggle-input {
    opacity: 0;
    width: 0;
    height: 0;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.toggle-label {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #dc3545; /* Red for overdue */
    transition: .4s;
    border-radius: 34px;
}

.toggle-label:before {
    position: absolute;
    content: "";
    height: 17px !important;
    width: 17px !important;
    left: 4px !important;
    bottom: 4px !important;
    background-color: white !important;
    transition: .4s !important;
    border-radius: 50%;
}

.toggle-input:checked + .toggle-label {
    background-color: #28a745; /* Green for paid */
}

.toggle-input:checked + .toggle-label:before {
    transform: translateX(30px);
}

.toggle-text {
    position: absolute;
    color: white;
    font-size: 10px;
    top: 50%;
    transform: translateY(-50%);
}

.toggle-text-on {
    right: 6px;
    display: none;
}

.toggle-text-off {
    left: 6px;
}

.toggle-input:checked + .toggle-label .toggle-text-on {
    display: block;
}

.toggle-input:checked + .toggle-label .toggle-text-off {
    display: none;
}

/* Status Toggle Switch */
.toggle-switch.status-switch {
    width: 100px;
    height: 32px;
}

.toggle-switch.status-switch .toggle-label:before {
    height: 26px;
    width: 26px;
    left: 3px;
    bottom: 3px;
}

.toggle-switch.status-switch .toggle-input:checked + .toggle-label:before {
    transform: translateX(68px);
}

.toggle-switch.status-switch .toggle-text {
    font-size: 12px;
    font-weight: 500;
}

.toggle-switch.status-switch .toggle-text-on {
    right: 30px;
}

.toggle-switch.status-switch .toggle-text-off {
    left: 30px;
}

/* Compact Toggle Switch for Modal Header */
.toggle-switch.compact {
    width: 40px;
    height: 20px;
    margin: 0 15px;
}

.toggle-switch.compact .toggle-label:before {
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
}

.toggle-switch.compact .toggle-input:checked + .toggle-label:before {
    transform: translateX(20px);
}

.modal-header .toggle-switch {
    order: 2; /* Places between title and close button */
}

/* Authentication Pages */
.auth-body {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.auth-container {
    width: 100%;
    max-width: 450px;
}

.auth-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-10);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.auth-header i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-4);
}

.auth-header h1 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-2);
}

.auth-header p {
    color: var(--gray-600);
    margin-bottom: 0;
}

.auth-form {
    margin-bottom: var(--spacing-6);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
}

.forgot-link {
    font-size: var(--font-size-sm);
    color: var(--primary-color);
}

.auth-footer {
    text-align: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--gray-200);
}

.auth-footer p {
    margin: 0;
    color: var(--gray-600);
}

.auth-footer a {
    font-weight: var(--font-weight-medium);
}

/* Admin Layout */
.admin-layout {
    display: flex;
    min-height: 100vh;
    background-color: var(--gray-50);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 30;
    transition: all var(--transition-normal);
}

.sidebar-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.logo i {
    font-size: 1.5rem;
}

.sidebar-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--border-radius-md);
    color: var(--gray-500);
    transition: all var(--transition-fast);
    display: none;
}

.sidebar-toggle:hover {
    background-color: var(--gray-100);
    color: var(--gray-700);
}

.sidebar-content {
    flex: 1;
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background-color: var(--gray-50);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-8);
}

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-light);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.visible-hidden {
    visibility: hidden;
}

.user-name {
    font-weight: var(--font-weight-semibold);
    color: var(--gray-800);
    font-size: var(--font-size-sm);
}

.user-role {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.sidebar-nav {
    flex: 1;
}

.nav-list {
    list-style: none;
    margin-bottom: var(--spacing-8);
}

.nav-item {
    margin-bottom: var(--spacing-2);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--border-radius-lg);
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.nav-link:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateX(4px);
}

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

.nav-link i {
    width: 20px;
    font-size: 1.1rem;
}

.nav-divider {
    height: 1px;
    background-color: var(--gray-200);
    margin: var(--spacing-6) 0;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.breadcrumb {
    display: flex;
    align-items: center;
    font-size:  25px;
    gap: 6px;
    color: #555;
}

.breadcrumb-item {
    white-space: nowrap;
}

.breadcrumb-item.current {
    font-weight: 600;
    color: #007bff;
}

.breadcrumb-separator {
    color: #999;
    font-size: 12px;
}


.main-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--spacing-4) var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 20;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.mobile-sidebar-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--border-radius-md);
    color: var(--gray-500);
    display: none;
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--gray-800);
    margin: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.user-menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    border-radius: 50%;
    overflow: hidden;
    width: 40px;
    height: 40px;
}

.user-menu-toggle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-content {
    flex: 1;
    padding: var(--spacing-6);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-8);
}

.page-actions {
    display: flex;
    gap: var(--spacing-4);
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.stat-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    transition: all var(--transition-fast);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.stat-content h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--gray-800);
    margin: 0;
}

.stat-content p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin: 0;
}

.dashboard-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
}

.chart-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

.chart-card h3 {
    margin-bottom: var(--spacing-6);
    color: var(--gray-800);
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.activity-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background-color: var(--gray-50);
    border-radius: var(--border-radius-lg);
}

.activity-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.activity-item span {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--gray-700);
}

.activity-item time {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.quick-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3);
}

.quick-action {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background-color: var(--gray-50);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    color: var(--gray-700);
    transition: all var(--transition-fast);
}

.quick-action:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateX(4px);
}

.quick-action i {
    color: var(--primary-color);
    transition: color var(--transition-fast);
}

.quick-action:hover i {
    color: var(--white);
}

/* Data Tables */
.data-table-container {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.table-controls {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-4);
}

.search-container {
    position: relative;
    max-width: 300px;
    flex: 1;
}

.search-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-3) var(--spacing-3) var(--spacing-10);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-sm);
}

.search-container i {
    position: absolute;
    left: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

.table-info {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

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

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

.data-table th,
.data-table td {
    padding: var(--spacing-4) var(--spacing-6);
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.data-table th {
    background-color: var(--gray-50);
    font-weight: var(--font-weight-semibold);
    color: var(--gray-700);
    font-size: var(--font-size-sm);
    cursor: pointer;
    user-select: none;
    position: relative;
}

.data-table th:hover {
    background-color: var(--gray-100);
}

.data-table th i {
    margin-left: var(--spacing-2);
    color: var(--gray-400);
    font-size: 0.8rem;
}

.data-table td {
    font-size: var(--font-size-sm);
    color: var(--gray-700);
}

.data-table tbody tr:hover {
    background-color: var(--gray-50);
}

.table-actions {
    display: flex;
    gap: var(--spacing-2);
}

.table-actions .btn {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.pagination {
    padding: var(--spacing-6);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-3);
    border-top: 1px solid var(--gray-200);
}

.page-numbers {
    display: flex;
    gap: var(--spacing-2);
}

.page-number {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    background-color: var(--white);
    color: var(--gray-700);
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.page-number:hover,
.page-number.active {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3) !important;
    border-radius: var(--border-radius-lg) !important;
    font-size: var(--font-size-xs) !important;
    font-weight: var(--font-weight-medium) !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
}

.badge-success {
    background-color: rgb(34 197 94 / 0.1);
    color: var(--success-color);
}

.badge-warning {
    background-color: rgb(234 179 8 / 0.1);
    color: var(--warning-color);
}

.badge-danger {
    background-color: rgb(239 68 68 / 0.1);
    color: var(--error-color);
}

.badge-info {
    background-color: rgb(6 182 212 / 0.1);
    color: var(--info-color);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

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

.modal-content {
    background: #ffffff;
    margin: 10vh auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transform: translateY(-20px);
    animation: slideUp 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    
}

@keyframes slideUp {
    to { transform: translateY(0); }
}

.modal-header {
    padding: 20px 25px;
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

.close {
    font-size: 1.8rem;
    font-weight: 300;
    color: rgba(255,255,255,0.8);
    cursor: pointer;
    transition: all 0.2s;
}

.close:hover {
    color: white;
    transform: scale(1.1);
}

.modal-body {
    padding: 25px;
    max-height: calc(80vh - 150px);
    overflow-y: auto;
}

.modal-body h3 {
    color: #2c3e50;
    margin: 20px 0 10px 0;
    font-size: 1.2rem;
    font-weight: 500;
    position: relative;
    padding-left: 15px;
}

.modal-body h3:before {
    content: '';
    position: absolute;
    left: 0;
    top: 5px;
    height: 18px;
    width: 4px;
    background: #3498db;
    border-radius: 2px;
}

.modal-body p {
    margin-bottom: 15px;
    line-height: 1.7;
    color: #555;
}

.modal-footer {
    padding: 15px 25px;
    background: #f9f9f9;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: flex-end;
}

.modal-footer .btn {
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s;
    margin-left: 25px;
}

.modal-footer .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Modal Header Layout */
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

.modal-header-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Toggle Switch in Header */
.modal-header .toggle-switch {
    margin: 0;
    order: 1;
}

.modal-header .close {
    order: 2;
}

/* Detail Pages */
.detail-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.detail-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.detail-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.detail-title {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.detail-title h2,
.detail-title h3 {
    margin: 0;
    color: var(--gray-800);
}

.detail-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    background-color: var(--success-color);
    color: var(--white);
}

.detail-actions {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.detail-content {
    padding: var(--spacing-6);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.detail-item label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0;
}

.detail-item span {
    font-size: var(--font-size-base);
    color: var(--gray-800);
    font-weight: var(--font-weight-medium);
}

/* Form Pages */
.form-container {
    max-width: 800px;
    margin: 0 auto;
}

.form-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.form-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
    text-align: center;
}

.form-header h2 {
    margin-bottom: var(--spacing-2);
    color: var(--gray-800);
}

.form-header p {
    margin: 0;
    color: var(--gray-600);
}

.payment-form {
    padding: var(--spacing-6);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--gray-200);
}

/* Invoice Details */
.invoice-details {
    background-color: var(--gray-50);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-6);
    margin: var(--spacing-6) 0;
}

.invoice-details h4 {
    margin-bottom: var(--spacing-4);
    color: var(--gray-800);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
}

.details-grid .detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--gray-200);
}

.details-grid .detail-item:last-child {
    border-bottom: none;
}

.details-grid .detail-item label {
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
    margin: 0;
}

.details-grid .detail-item span {
    font-weight: var(--font-weight-semibold);
    color: var(--gray-800);
}

/* Interest Calculation */
.interest-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.interest-rate {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    background-color: var(--gray-100);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--border-radius-lg);
}

.interest-summary {
    padding: var(--spacing-6);
    background-color: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-6);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3);
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--gray-200);
}

.summary-item label {
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
    margin: 0;
}

.summary-item span {
    font-weight: var(--font-weight-bold);
    color: var(--gray-800);
    font-size: var(--font-size-lg);
}

/* Settings Page */
.settings-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
}

.settings-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.settings-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
}

.settings-header h3 {
    margin-bottom: var(--spacing-2);
    color: var(--gray-800);
}

.settings-header p {
    margin: 0;
    color: var(--gray-600);
}

.settings-form {
    padding: var(--spacing-6);
}

.profile-photo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
    padding: var(--spacing-6);
    background-color: var(--gray-50);
    border-radius: var(--border-radius-lg);
}

.current-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-light);
}

.current-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    cursor: pointer;
    margin-bottom: var(--spacing-2);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkbox-label small {
    display: block;
    color: var(--gray-500);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-1);
}

/* Table Headers */
.table-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-header h3 {
    margin: 0;
    color: var(--gray-800);
}

/* Toast Notifications */
.toast {
    position: fixed;
    top: var(--spacing-6);
    right: var(--spacing-6);
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    padding: var(--spacing-4) var(--spacing-6);
    z-index: 1001;
    transform: translateX(400px);
    transition: transform var(--transition-normal);
}

.toast.show {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.toast-icon {
    font-size: 1.2rem;
}

.toast.success .toast-icon {
    color: var(--success-color);
}

.toast.error .toast-icon {
    color: var(--error-color);
}

.toast.warning .toast-icon {
    color: var(--warning-color);
}

.toast.info .toast-icon {
    color: var(--info-color);
}

.toast-message {
    font-weight: var(--font-weight-medium);
    color: var(--gray-800);
}

/* Sidebar Overlay */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 25;
    display: none;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-charts {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-sidebar-toggle {
        display: block;
    }
    
    .sidebar-toggle {
        display: block;
    }
    
    .page-content {
        padding: var(--spacing-4);
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        gap: var(--spacing-4);
        align-items: flex-start;
    }
    
    .page-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .table-controls {
        flex-direction: column;
        gap: var(--spacing-4);
        align-items: stretch;
    }
    
    .detail-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .detail-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .modal-content {
        margin: var(--spacing-4);
        max-height: calc(100vh - 2rem);
    }
    
    .auth-card {
        padding: var(--spacing-6);
    }
    
    .profile-photo-section {
        flex-direction: column;
        text-align: center;
    }
    
    .interest-summary {
        grid-template-columns: 1fr;
    }
    
    .pagination {
        flex-wrap: wrap;
        gap: var(--spacing-2);
    }
}

@media (max-width: 480px) {
    .page-content {
        padding: var(--spacing-3);
    }
    
    .data-table-container {
        border-radius: var(--border-radius-lg);
    }
    
    .table-wrapper {
        overflow-x: scroll;
    }
    
    .data-table {
        min-width: 600px;
    }
    
    .btn {
        padding: var(--spacing-3) var(--spacing-4);
        font-size: var(--font-size-xs);
    }
    
    .toast {
        top: var(--spacing-4);
        right: var(--spacing-4);
        left: var(--spacing-4);
        transform: translateY(-100px);
    }
    
    .toast.show {
        transform: translateY(0);
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .main-header,
    .page-actions,
    .table-actions,
    .pagination,
    .modal,
    .toast {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .page-content {
        padding: 0;
    }
    
    .data-table-container,
    .detail-card,
    .form-card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}

.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 Styles */
button:focus,
input:focus,
textarea:focus,
select:focus,
a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --gray-100: #000000;
        --gray-200: #333333;
        --gray-300: #666666;
        --gray-400: #999999;
        --gray-500: #CCCCCC;
        --gray-600: #FFFFFF;
        --gray-700: #FFFFFF;
        --gray-800: #FFFFFF;
        --gray-900: #FFFFFF;
    }
    
    .data-table th,
    .data-table td {
        border: 2px solid var(--gray-800);
    }
    
    .btn {
        border-width: 2px;
    }
}

/* Error Text Styling */
.error-text {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Alert Styling */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 0.9rem;
    position: relative;
    animation: fadeIn 0.3s ease-in-out;
}

.alert-success {
    color: #3c763d;
    background-color: #dff0d8;
    border-color: #d6e9c6;
}

.alert-error, .alert-danger {
    color: #a94442;
    background-color: #f2dede;
    border-color: #ebccd1;
}

.alert-warning {
    color: #8a6d3b;
    background-color: #fcf8e3;
    border-color: #faebcc;
}

.alert-info {
    color: #31708f;
    background-color: #d9edf7;
    border-color: #bce8f1;
}

/* Alert close button */
.alert .close {
    position: absolute;
    top: 5px;
    right: 10px;
    color: inherit;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    background: transparent;
    border: 0;
    -webkit-appearance: none;
}

/* Alert icons */
.alert-success:before, 
.alert-error:before, 
.alert-warning:before, 
.alert-info:before {
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    margin-right: 10px;
}

.alert-success:before {
    content: '\f058';
}

.alert-error:before, .alert-danger:before {
    content: '\f057';
}

.alert-warning:before {
    content: '\f071';
}

.alert-info:before {
    content: '\f05a';
}

/* Expandable table styles */
.expandable-table {
    width: 100%;
    border-collapse: collapse;
}

.expandable-table .parent-row {
    cursor: pointer;
    transition: background-color 0.2s;
}

.expandable-table .parent-row:hover {
    background-color: #f5f5f5;
}

.expandable-table .child-row {
    background-color: #f9f9f9;
}

.expandable-table .child-row td {
    padding: 0 !important;
}

.payment-details {
    padding: 1rem;
}

.payment-details h4 {
    margin-bottom: 1rem;
    color: var(--gray-700);
}

.payment-details .inner-table {
    width: 100%;
    border-collapse: collapse;
}

.payment-details .inner-table th,
.payment-details .inner-table td {
    padding: 0.5rem 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.payment-details .inner-table th {
    background-color: #f0f0f0;
}

.toggle-details {
    padding: 0.25rem 0.5rem;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-5);
}

th, td {
    border: 1px solid var(--gray-300);
    padding: var(--spacing-3);
    text-align: center;
}

th {
    background-color: var(--gray-100);
    font-weight: var(--font-weight-semibold);
}

.total-row {
    font-weight: var(--font-weight-bold);
    background-color: var(--gray-100);
}

/* Demo Page Specific Styles */
.demo-header {
    margin-bottom: var(--spacing-5);
    text-align: center;
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 var(--spacing-4);
}

.demo-header h1 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2);
}

.demo-header h2 {
    font-size: var(--font-size-lg);
    margin-top: var(--spacing-5);
    margin-bottom: var(--spacing-3);
    text-decoration: underline;
    color: var(--gray-700);
}

.demo-header h3 {
    font-size: var(--font-size-base);
    margin-top: var(--spacing-4);
    margin-bottom: var(--spacing-3);
    color: var(--gray-600);
}

/* hide sub‑menus by default */
.has-submenu .submenu {
    display: none;
    padding-left: 1rem;          /* optional indent */
    flex-direction: column;
}

/* show sub‑menu when parent <li> has .open */
.has-submenu.open .submenu {
    display: flex;
}

/* animate the chevron */
.has-submenu .submenu-toggle {
    margin-left: auto;
    transition: transform .2s ease;
}
.has-submenu.open .submenu-toggle {
    transform: rotate(180deg);
}
/* remove bullets and extra left‑indent on every nav list */
.sidebar-nav ul,
.sidebar-nav .submenu {
    list-style: none;   /* no bullets */
    margin: 0;          /* remove browser default */
    padding: 0;         /* …and its indent */
}

/* --- Sidebar header container --- */
.sidebar-header {
    display: flex;
    align-items: center;     /* vertical centering */
    justify-content: space-between;
    padding: 19px 36px;
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
  }
  
  /* --- Logo box --- */
  .sidebar-header .logo {
    height: 40px;            /* adjust to taste */
    max-width: 160px;        /* optional: constrain width */
    display: flex;           /* so <img> can use object-fit */
    align-items: center;
  }
  
  /* --- Logo image --- */
  .sidebar-header .logo img {
    max-height: 100%;        /* never taller than .logo box */
    max-width: 100%;         /* scale down if too wide */
    object-fit: contain;     /* keep aspect ratio */
  }
  
  /* --- Hamburger button --- */
  .sidebar-toggle {
    background: none;
    border: none;
    font-size: 20px;
    color: #333;
    cursor: pointer;
  }
  
  .sidebar-toggle:focus { outline: none; }