/* Microsoft Dynamics-inspired Fuel Management System CSS */

:root {
    --primary-blue: #0078d4;
    --primary-dark-blue: #106ebe;
    --secondary-blue: #deecf9;
    --light-blue: #f3f9fd;
    --dark-gray: #323130;
    --medium-gray: #605e5c;
    --light-gray: #f3f2f1;
    --border-gray: #edebe9;
    --success-green: #107c10;
    --warning-orange: #d83b01;
    --error-red: #d13438;
    --white: #ffffff;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.15);
}

* {
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    margin: 0;
    padding: 0;
    line-height: 1.5;
}

/* Header Styles - Mobile First */
.navbar {
    background-color: var(--primary-blue) !important;
    box-shadow: var(--shadow);
    border: none;
    padding: 0.5rem 1rem;
    min-height: 56px;
}

.navbar-brand {
    color: var(--white) !important;
    font-weight: 600;
    font-size: 1.1rem;
}

.navbar-text {
    color: var(--secondary-blue) !important;
    font-size: 0.85rem;
}

.navbar-toggler {
    border: 1px solid var(--secondary-blue);
    padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.25);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Header Navigation Styles */
.navbar-nav .nav-link {
    color: var(--secondary-blue) !important;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    margin: 0 0.25rem;
    transition: all 0.2s ease;
}

/* Mobile-First Responsive Design */
/* Mobile Form Sections */
.mobile-form-section {
    padding: 1rem 0.5rem;
    margin-bottom: 1rem;
}

.section-header {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-gray);
}

/* Mobile Form Controls */
.form-control-mobile {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 0.75rem;
    border-radius: 8px;
    border: 2px solid var(--border-gray);
    transition: border-color 0.2s ease;
}

.form-control-mobile:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 120, 212, 0.25);
}

.form-select-mobile {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 0.75rem;
    border-radius: 8px;
    border: 2px solid var(--border-gray);
    background-size: 16px 12px;
}

.form-select-mobile:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 120, 212, 0.25);
}

/* Mobile Meter Sections */
.mobile-meter-section {
    margin-top: 1rem;
}

.meter-card {
    background-color: #f8f9fa;
    border: 2px solid var(--border-gray);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.meter-card-header {
    background-color: #e9ecef;
    border-bottom: 2px solid var(--border-gray);
    padding: 1rem;
    border-radius: 10px 10px 0 0;
}

.meter-row {
    margin-bottom: 1.5rem;
    padding: 0.5rem;
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
}

.meter-label {
    text-align: center;
    margin-bottom: 0.5rem;
}

/* Odometer-style Inputs */
.odometer-input {
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    font-weight: bold;
    border: 2px solid #999;
    border-radius: 6px;
    padding: 0.75rem;
    text-align: center;
}

.odometer-readonly {
    background-color: #e6e6e6;
    color: #000;
    border: 2px solid #999;
}

/* Total Display Section */
.total-section {
    margin-top: 1.5rem;
}

.total-display {
    background-color: #e9ecef;
    border-radius: 12px;
    border: 2px solid var(--primary-blue);
}

.total-input {
    max-width: 180px;
    font-size: 1.2rem;
}

/* Mobile Button Section */
.mobile-button-section {
    padding: 1.5rem 0.5rem 1rem;
    margin-top: 2rem;
    border-top: 2px solid var(--border-gray);
}

.btn-mobile-primary {
    font-size: 1.1rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    min-height: 56px; /* Touch-friendly size */
}

.btn-mobile-secondary {
    font-size: 1rem;
    padding: 0.75rem 2rem;
    border-radius: 12px;
    min-height: 48px; /* Touch-friendly size */
}

/* Responsive Breakpoints */
@media (max-width: 576px) {
    .mobile-form-section {
        padding: 1rem 0.25rem;
    }
    
    .section-header {
        font-size: 0.95rem;
    }
    
    .form-control-mobile,
    .form-select-mobile {
        font-size: 16px;
        padding: 0.875rem;
    }
    
    .odometer-input {
        font-size: 1rem;
        padding: 0.875rem;
    }
    
    .meter-card-header h6 {
        font-size: 0.9rem;
    }
    
    .meter-label h6 {
        font-size: 0.85rem;
    }
    
    .form-label {
        font-size: 0.85rem;
        font-weight: 600;
    }
    
    .btn-mobile-primary {
        font-size: 1rem;
        padding: 1rem 1.5rem;
    }
    
    .btn-mobile-secondary {
        font-size: 0.9rem;
        padding: 0.75rem 1.5rem;
    }
}

@media (min-width: 768px) {
    .mobile-button-section .d-grid {
        display: flex !important;
        flex-direction: row-reverse;
        gap: 1rem;
    }
    
    .mobile-button-section .btn {
        width: auto;
    }
}

/* Touch-friendly improvements */
@media (pointer: coarse) {
    .form-control,
    .form-select,
    .btn {
        min-height: 44px; /* Apple's recommended touch target size */
    }
    
    .form-control-mobile,
    .form-select-mobile {
        min-height: 48px;
    }
    
    .odometer-input {
        min-height: 48px;
    }
}

/* Improved focus states for accessibility */
.form-control:focus,
.form-select:focus,
.btn:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Loading states for mobile */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Mobile-specific card adjustments */
@media (max-width: 768px) {
    .card {
        border-radius: 12px;
        box-shadow: var(--shadow);
        margin-bottom: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .card-header {
        padding: 1rem;
        font-size: 1rem;
    }
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white) !important;
}

.navbar-nav .nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--white) !important;
    font-weight: 600;
}

.navbar-nav .nav-link i {
    margin-right: 0.375rem;
    width: 14px;
    font-size: 0.85rem;
}

/* Mobile Navigation Responsiveness */
@media (max-width: 991px) {
    .navbar-collapse {
        background-color: var(--primary-blue);
        margin-top: 0.5rem;
        border-radius: 6px;
        padding: 0.5rem;
        box-shadow: var(--shadow);
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        margin: 0.125rem 0;
        border-radius: 4px;
    }
    
    .navbar-text {
        padding: 0.75rem 1rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        margin-top: 0.5rem;
    }
}

/* Legacy sidebar nav-pills styles - now unused */

/* Main Content Area - Mobile First */
.main-content {
    padding: 1rem;
    background-color: var(--light-gray);
}

/* Page Headers - Compact Mobile First */
.page-header {
    background-color: var(--white);
    padding: 1rem;
    border-radius: 6px;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
    border: 1px solid var(--border-gray);
}

.page-title {
    color: var(--dark-gray);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.page-subtitle {
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin: 0.25rem 0 0 0;
}

/* Progress Bar */
.progress-container {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-gray);
    padding: 0;
    height: 4px;
}

.progress-container .progress {
    height: 4px;
    border-radius: 0;
    background-color: var(--secondary-blue);
}

.progress-container .progress-bar {
    background-color: var(--primary-blue);
}

/* Toast Notifications */
.toast {
    background-color: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    box-shadow: var(--shadow-hover);
    max-width: 350px;
}

.toast-header {
    background-color: var(--light-blue);
    border-bottom: 1px solid var(--border-gray);
    padding: 0.5rem 0.75rem;
}

.toast-body {
    padding: 0.75rem;
    font-size: 0.9rem;
}

.toast.success .toast-header {
    background-color: #d4edda;
    color: var(--success-green);
}

.toast.error .toast-header {
    background-color: #f8d7da;
    color: var(--error-red);
}

.toast.warning .toast-header {
    background-color: #fff3cd;
    color: var(--warning-orange);
}

/* Cards - Compact Mobile First */
.card {
    border: 1px solid var(--border-gray);
    border-radius: 6px;
    box-shadow: var(--shadow);
    background-color: var(--white);
    transition: box-shadow 0.2s ease;
    margin-bottom: 1rem;
}

.card-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-gray);
    background-color: var(--primary-blue);
    color: var(--white);
    border-radius: 6px 6px 0 0;
    font-weight: 600;
    font-size: 0.95rem;
}

.card-body {
    padding: 1rem;
}

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

/* Metrics Cards - Compact Mobile First */
.metrics-card {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark-blue));
    color: var(--white);
    border: none;
    text-align: center;
    padding: 1rem;
    margin-bottom: 0.75rem;
}

.metrics-card .card-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    line-height: 1.2;
}

.metrics-card .card-subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 500;
}

/* Inventory Cards */
.inventory-card {
    background-color: var(--white);
    border-left: 4px solid var(--primary-blue);
}

.inventory-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-gray);
}

.inventory-item:last-child {
    border-bottom: none;
}

.inventory-name {
    font-weight: 600;
    color: var(--dark-gray);
}

.inventory-details {
    font-size: 0.9rem;
    color: var(--medium-gray);
}

.inventory-amount {
    font-weight: 600;
    color: var(--primary-blue);
}

/* Compact Form Styles */
.form-section {
    margin-bottom: 1.5rem;
}

.form-section:last-child {
    margin-bottom: 1rem;
}

.form-section h6 {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--border-gray);
}

.form-section h6 i {
    color: var(--primary-blue);
    margin-right: 0.5rem;
}

.form-label {
    font-weight: 500;
    color: var(--dark-gray);
    font-size: 0.85rem;
    margin-bottom: 0.375rem;
}

.form-control, .form-select {
    border: 1px solid var(--border-gray);
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background-color: var(--white);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.1);
    outline: none;
}

.form-control:disabled, .form-select:disabled {
    background-color: var(--light-gray);
    color: var(--medium-gray);
}

.mb-3 {
    margin-bottom: 0.75rem !important;
}

.btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.2s ease;
    border: none;
}

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

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

.btn-outline-primary {
    border: 1px solid var(--primary-blue);
    color: var(--primary-blue);
    background-color: transparent;
}

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

.alert-info {
    background-color: var(--light-blue);
    border: 1px solid var(--secondary-blue);
    color: var(--primary-dark-blue);
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0;
    font-size: 0.85rem;
}

/* Breadcrumb Compact */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--medium-gray);
}

/* Reports Page Styles */
.date-filter-section .form-control-mobile {
    min-height: 48px;
    font-size: 1rem;
}

.nav-tabs {
    border-bottom: 2px solid var(--border-gray);
    margin-bottom: 0;
}

.nav-tabs .nav-link {
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--medium-gray);
    font-weight: 500;
    padding: 0.75rem 1rem;
    background: none;
}

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

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

.tab-content {
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-top: none;
}

.transaction-id {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    background: var(--light-gray);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    color: var(--dark-gray);
}

/* Odometer-style readings */
.odometer-reading {
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    font-weight: 600;
    color: #000;
    background: #e6e6e6;
    padding: 0.3rem 0.5rem;
    border-radius: 4px;
    text-align: center;
    min-width: 80px;
}

/* Filter Sidebar Styles */
.filter-sidebar {
    position: fixed;
    top: 0;
    right: -350px;
    width: 350px;
    height: 100vh;
    background: #fff;
    box-shadow: -2px 0 10px rgba(0,0,0,0.1);
    z-index: 1050;
    transition: right 0.3s ease-in-out;
    overflow-y: auto;
}

.filter-sidebar.active {
    right: 0;
}

.filter-sidebar-header {
    background: var(--primary-color);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.filter-sidebar-body {
    padding: 1.5rem;
}

.filter-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.5);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}

.filter-sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

body.filter-sidebar-open {
    overflow: hidden;
}

/* Mobile responsiveness for filter sidebar */
@media (max-width: 768px) {
    .filter-sidebar {
        width: 100vw;
        right: -100vw;
    }
}

/* DataTables Custom Styling */
.dataTables_wrapper {
    font-family: var(--font-family);
}

.dataTables_length select,
.dataTables_filter input {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    background-color: white;
}

.dataTables_filter input {
    margin-left: 0.5rem;
    width: auto;
    min-width: 200px;
}

.dataTables_length label,
.dataTables_filter label {
    font-weight: 500;
    color: var(--dark-gray);
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dataTables_info {
    color: var(--text-muted);
    font-size: 0.875rem;
    padding-top: 0.75rem;
}

.dataTables_paginate {
    padding-top: 0.5rem;
}

.dataTables_paginate .paginate_button {
    border: 1px solid var(--border-color);
    background: white;
    color: var(--primary-color) !important;
    padding: 0.375rem 0.75rem;
    margin-left: 2px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.875rem;
}

.dataTables_paginate .paginate_button:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white !important;
}

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

.dataTables_paginate .paginate_button.disabled {
    color: var(--text-muted) !important;
    background: var(--light-gray);
    border-color: var(--border-color);
    cursor: not-allowed;
}

table.dataTable thead th {
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    color: var(--primary-color);
    padding: 0.75rem;
}

table.dataTable tbody tr:hover {
    background-color: rgba(40, 120, 180, 0.05);
}

/* Mobile responsive adjustments for DataTables */
@media (max-width: 768px) {
    .dataTables_filter input {
        min-width: 150px;
        width: 100%;
        margin-left: 0;
        margin-top: 0.25rem;
    }
    
    .dataTables_length label,
    .dataTables_filter label {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .dataTables_wrapper .row {
        margin: 0;
    }
    
    .dataTables_wrapper .row > div {
        padding: 0.25rem;
    }
}

/* Mobile optimizations for reports */
@media (max-width: 768px) {
    .nav-tabs .nav-link {
        font-size: 0.8rem;
        padding: 0.5rem 0.75rem;
    }

    .table-responsive {
        max-height: 400px;
        overflow-y: auto;
    }

    /* Hide some table columns on mobile for reports */
    .table th:nth-child(n+7),
    .table td:nth-child(n+7) {
        display: none;
    }
}

.breadcrumb-item a {
    color: var(--primary-blue);
    text-decoration: none;
}

.breadcrumb-item.active {
    color: var(--dark-gray);
}

/* Progress Bars - Compact */
.fuel-progress {
    height: 6px;
    background-color: var(--light-gray);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 0.375rem;
}

.fuel-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--success-green), var(--primary-blue));
    transition: width 0.3s ease;
}

/* Breadcrumb Styles */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin: 0;
    font-size: 0.85rem;
}

.breadcrumb-item {
    font-weight: 500;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--medium-gray);
    font-weight: bold;
}

.breadcrumb-item a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb-item a:hover {
    color: var(--primary-dark-blue);
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--medium-gray);
}

/* Page Title Styles */
h2.mb-4 {
    color: var(--dark-gray);
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 1.5rem !important;
}

/* Forms */
.form-label {
    color: var(--dark-gray);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    border: 1px solid var(--border-gray);
    border-radius: 4px;
    padding: 0.75rem;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 120, 212, 0.25);
}

.form-control.is-invalid {
    border-color: var(--error-red);
}

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

/* Buttons */
.btn {
    border-radius: 4px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.2s ease;
    border: none;
}

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

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

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

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

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

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

/* Tables */
.table {
    background-color: var(--white);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table thead th {
    background-color: var(--light-gray);
    border-bottom: 2px solid var(--border-gray);
    color: var(--dark-gray);
    font-weight: 600;
    padding: 1rem;
}

.table tbody td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-gray);
    vertical-align: middle;
}

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

/* Activity Log */
.activity-log {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-gray);
    transition: background-color 0.2s ease;
}

.activity-item:hover {
    background-color: var(--light-blue);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-type {
    font-weight: 600;
    color: var(--primary-blue);
    font-size: 0.9rem;
    text-transform: uppercase;
}

.activity-description {
    color: var(--dark-gray);
    margin: 0.25rem 0;
}

.activity-meta {
    font-size: 0.8rem;
    color: var(--medium-gray);
}

/* Alerts */
.alert {
    border-radius: 6px;
    border: none;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
}

.alert-success {
    background-color: #d4edda;
    color: var(--success-green);
    border-left: 4px solid var(--success-green);
}

.alert-danger {
    background-color: #f8d7da;
    color: var(--error-red);
    border-left: 4px solid var(--error-red);
}

.alert-warning {
    background-color: #fff3cd;
    color: var(--warning-orange);
    border-left: 4px solid var(--warning-orange);
}

/* Date Filters */
.date-filter-section {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 6px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.filter-row {
    display: flex;
    gap: 1rem;
    align-items: end;
}

/* Loading States */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--medium-gray);
}

.spinner-border {
    color: var(--primary-blue);
}

/* Mobile-First Responsive Design */
@media (max-width: 576px) {
    /* Extra small devices (phones) */
    .navbar-brand {
        font-size: 1rem;
    }
    
    .nav-pills .nav-link {
        padding: 0.4rem 0.6rem;
        margin: 0.1rem 0.5rem;
        font-size: 0.85rem;
    }
    
    .page-header {
        padding: 0.75rem;
        margin-bottom: 0.75rem;
    }
    
    .page-title {
        font-size: 1.1rem;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    .inventory-item {
        padding: 0.5rem 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .inventory-amount {
        align-self: flex-end;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .table {
        font-size: 0.85rem;
    }
    
    .table thead th, .table tbody td {
        padding: 0.5rem;
    }
    
    .date-filter-section {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .form-control, .form-select {
        padding: 0.6rem;
        font-size: 0.9rem;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    /* Small devices (tablets) */
    .sidebar {
        width: 200px;
        padding: 0.75rem 0;
    }
    
    .nav-pills .nav-link {
        padding: 0.6rem 0.75rem;
        margin: 0.15rem 0.6rem;
    }
    
    .main-content {
        padding: 1.25rem;
    }
    
    .page-header {
        padding: 1.25rem;
    }
    
    .card-body {
        padding: 1.25rem;
    }
    
    .inventory-item {
        padding: 0.6rem 0;
    }
    
    .btn {
        padding: 0.6rem 1.25rem;
    }
    
    .filter-row {
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .filter-row .col-auto {
        flex: 1;
        min-width: 150px;
    }
}

@media (min-width: 769px) and (max-width: 992px) {
    /* Medium devices (small laptops) */
    .sidebar {
        width: 220px;
    }
    
    .main-content {
        padding: 1.5rem;
    }
    
    .page-header {
        padding: 1.5rem;
    }
    
    .inventory-item {
        padding: 0.75rem 0;
    }
}

@media (min-width: 993px) {
    /* Large devices (desktops) */
    .main-content {
        padding: 2rem;
    }
    
    .page-header {
        padding: 2rem;
        margin-bottom: 2rem;
    }
    
    .page-title {
        font-size: 1.75rem;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .date-filter-section {
        padding: 2rem;
        margin-bottom: 2rem;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--border-gray);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--medium-gray);
}

/* Form Validation Feedback */
.valid-feedback {
    color: var(--success-green);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.invalid-feedback {
    color: var(--error-red);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Transaction ID Display */
.transaction-id {
    font-family: 'Courier New', monospace;
    background-color: var(--light-gray);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    border: 1px solid var(--border-gray);
}

/* Microsoft Dynamics Style Cards */
.dynamics-card {
    border-radius: 6px;
    padding: 1.5rem;
    color: var(--white);
    display: flex;
    align-items: center;
    height: 140px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.dynamics-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.dynamics-card-icon {
    font-size: 2.5rem;
    margin-right: 1rem;
    opacity: 0.9;
    flex-shrink: 0;
}

.dynamics-card-content {
    flex: 1;
}

.dynamics-card-value {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.25rem;
}

.dynamics-card-unit {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.dynamics-card-count {
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.dynamics-card-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
}

/* Card Color Variants */
.dynamics-card-green {
    background: linear-gradient(135deg, #28a745, #20c997);
}

.dynamics-card-blue {
    background: linear-gradient(135deg, #0078d4, #106ebe);
}

.dynamics-card-purple {
    background: linear-gradient(135deg, #6f42c1, #563d7c);
}

.dynamics-card-orange {
    background: linear-gradient(135deg, #fd7e14, #e68900);
}

.dynamics-card-red {
    background: linear-gradient(135deg, #dc3545, #c82333);
}

.dynamics-card-dark {
    background: linear-gradient(135deg, #495057, #343a40);
}

.dynamics-card-welcome {
    background: linear-gradient(135deg, #007bff, #0056b3);
}

.dynamics-card-blue-light {
    background: linear-gradient(135deg, #17a2b8, #138496);
}

/* Breakdown styles for multi-line card content */
.adjustment-breakdown,
.fuel-breakdown {
    font-size: 0.75rem;
    line-height: 1.3;
}

.adjustment-breakdown div,
.fuel-breakdown div {
    margin-bottom: 0.125rem;
}

/* Center align the card row for better presentation */
.row.justify-content-center {
    justify-content: center !important;
}

/* Responsive adjustments */
@media (max-width: 991px) {
    .dynamics-card {
        height: 130px;
        padding: 1.25rem;
    }
    
    .dynamics-card-icon {
        font-size: 2rem;
    }
    
    .dynamics-card-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 575px) {
    .dynamics-card {
        height: 120px;
        padding: 1rem;
    }
    
    .dynamics-card-icon {
        font-size: 1.5rem;
        margin-right: 0.75rem;
    }
    
    .dynamics-card-value {
        font-size: 1.3rem;
    }
    
    .dynamics-card-unit,
    .dynamics-card-count {
        font-size: 0.75rem;
    }
    
    .dynamics-card-label {
        font-size: 0.7rem;
    }
}