/* Variables - Mantener consistencia con el sistema existente */
:root {
    --primary: #135bec;
    --primary-light: rgba(19, 91, 236, 0.1);
    --primary-dark: #0d4ac4;
    --bg-light: #f6f6f8;
    --bg-dark: #101622;
    --surface-light: #ffffff;
    --surface-dark: #1a1f2e;
    --text-light: #0d121b;
    --text-dark: #f8f9fc;
    --text-muted-light: #4c669a;
    --text-muted-dark: #a0b3d7;
    --border-light: #e2e8f0;
    --border-dark: #334155;
    --success: #28A745;
    --success-light: rgba(40, 167, 69, 0.1);
    --warning: #FFC107;
    --warning-light: rgba(255, 193, 7, 0.1);
    --danger: #DC3545;
    --danger-light: rgba(220, 53, 69, 0.1);
    --info: #17a2b8;
    --info-light: rgba(23, 162, 184, 0.1);
    --resting: #6f42c1;
    --resting-light: rgba(111, 66, 193, 0.1);
    --vacation: #6c757d;
    --vacation-light: rgba(108, 117, 125, 0.1);
    --chart-1: #135bec;
    --chart-2: #28A745;
    --chart-3: #FFC107;
    --chart-4: #DC3545;
    --chart-5: #6f42c1;
    --chart-6: #17a2b8;
    --chart-7: #fd7e14;
    --chart-8: #20c997;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-light);
    transition: background-color 0.3s, color 0.3s;
}

body.dark {
    background-color: var(--bg-dark);
    color: var(--text-dark);
}

/* Container Layout */
.container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar - Manteniendo consistencia */
.sidebar {
    width: 256px;
    background-color: var(--surface-light);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

body.dark .sidebar {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
}

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

.logo-icon svg {
    width: 24px;
    height: 24px;
}

.logo-text h1 {
    font-size: 1rem;
    font-weight: 700;
}

.logo-text p {
    font-size: 0.875rem;
    color: var(--text-muted-light);
}

body.dark .logo-text p {
    color: var(--text-muted-dark);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--text-muted-light);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

body.dark .nav-item {
    color: var(--text-muted-dark);
}

.nav-item:hover {
    background-color: var(--primary-light);
}

.nav-item.active {
    background-color: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.nav-icon {
    font-size: 1.25rem;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* Page Header */
.page-header {
    background-color: var(--surface-light);
    border-bottom: 1px solid var(--border-light);
    padding: 2rem;
}

body.dark .page-header {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    flex-wrap: wrap;
}

.header-text h1 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.header-text p {
    font-size: 1rem;
    color: var(--text-muted-light);
}

body.dark .header-text p {
    color: var(--text-muted-dark);
}

/* Buttons */
.btn-primary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(19, 91, 236, 0.3);
}

.btn-secondary {
    padding: 0.625rem 1.5rem;
    background-color: var(--border-light);
    color: var(--text-light);
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

body.dark .btn-secondary {
    background-color: var(--border-dark);
    color: var(--text-dark);
}

.btn-secondary:hover {
    background-color: var(--text-muted-light);
    color: white;
}

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

/* Date Range Section */
.date-range-section {
    padding: 1.5rem 2rem 0;
}

.date-range-container {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    overflow: hidden;
}

body.dark .date-range-container {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.date-range-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

body.dark .date-range-header {
    border-color: var(--border-dark);
}

.date-range-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.date-range-controls {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.date-range-picker {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background-color: var(--bg-light);
    color: var(--text-light);
}

body.dark .date-range-picker {
    border-color: var(--border-dark);
    background-color: #1e293b;
    color: var(--text-dark);
}

.date-range-picker i {
    color: var(--text-muted-light);
}

body.dark .date-range-picker i {
    color: var(--text-muted-dark);
}

.date-range-picker input {
    border: none;
    background: none;
    color: inherit;
    font-family: inherit;
    font-size: 0.875rem;
    outline: none;
    min-width: 250px;
}

.quick-periods {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.period-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-light);
    border-radius: 0.375rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

body.dark .period-btn {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.period-btn:hover {
    background-color: var(--bg-light);
}

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

/* KPI Dashboard */
.kpi-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    padding: 2rem;
}

.kpi-card {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: all 0.2s;
}

body.dark .kpi-card {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.kpi-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.kpi-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.kpi-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted-light);
}

body.dark .kpi-title {
    color: var(--text-muted-dark);
}

.kpi-body {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 0.5rem;
}

.kpi-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.kpi-change {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.kpi-change.positive {
    color: var(--success);
}

.kpi-change.negative {
    color: var(--danger);
}

.kpi-footer {
    font-size: 0.75rem;
    color: var(--text-muted-light);
}

body.dark .kpi-footer {
    color: var(--text-muted-dark);
}

/* Charts Section */
.charts-section {
    padding: 0 2rem 2rem;
}

.chart-row {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.chart-row:first-child {
    grid-template-columns: 1fr;
}

.chart-row:nth-child(2) {
    grid-template-columns: repeat(2, 1fr);
}

.chart-row:nth-child(3) {
    grid-template-columns: repeat(3, 1fr);
}

.chart-card {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.2s;
}

body.dark .chart-card {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.chart-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.chart-card.full-width {
    grid-column: 1 / -1;
}

.chart-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

body.dark .chart-header {
    border-color: var(--border-dark);
}

.chart-header h3 {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chart-actions {
    display: flex;
    gap: 0.5rem;
}

.chart-action-btn {
    width: 2rem;
    height: 2rem;
    border: 1px solid var(--border-light);
    border-radius: 0.375rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

body.dark .chart-action-btn {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.chart-action-btn:hover {
    background-color: var(--bg-light);
}

.chart-body {
    padding: 1.5rem;
    height: 300px;
    position: relative;
}

/* Reports Section */
.reports-section {
    padding: 0 2rem 2rem;
}

.reports-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
}

body.dark .reports-header {
    border-color: var(--border-dark);
}

.reports-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.reports-filter select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    font-size: 0.875rem;
    outline: none;
}

body.dark .reports-filter select {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.reports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.report-card {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.2s;
    cursor: pointer;
}

body.dark .report-card {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.report-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.report-card-header {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 1px solid var(--border-light);
}

body.dark .report-card-header {
    border-color: var(--border-dark);
}

.report-type {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
}

.report-type.operational {
    background-color: var(--primary-light);
    color: var(--primary);
}

.report-type.financial {
    background-color: var(--success-light);
    color: var(--success);
}

.report-type.maintenance {
    background-color: var(--warning-light);
    color: var(--warning);
}

.report-type.crew {
    background-color: var(--resting-light);
    color: var(--resting);
}

.report-type.safety {
    background-color: var(--danger-light);
    color: var(--danger);
}

.report-card-body {
    padding: 1.5rem;
}

.report-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.report-description {
    font-size: 0.875rem;
    color: var(--text-muted-light);
    margin-bottom: 1rem;
    line-height: 1.5;
}

body.dark .report-description {
    color: var(--text-muted-dark);
}

.report-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-muted-light);
    margin-bottom: 1rem;
}

body.dark .report-meta {
    color: var(--text-muted-dark);
}

.report-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.report-stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted-light);
}

body.dark .stat-label {
    color: var(--text-muted-dark);
}

.report-card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

body.dark .report-card-footer {
    border-color: var(--border-dark);
}

.report-actions {
    display: flex;
    gap: 0.5rem;
}

.report-action-btn {
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 0.375rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

body.dark .report-action-btn {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.report-action-btn:hover {
    background-color: var(--bg-light);
}

.report-action-btn.download {
    background-color: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.report-action-btn.download:hover {
    background-color: var(--primary);
    color: white;
}

.reports-actions {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
}

body.dark .reports-actions {
    border-color: var(--border-dark);
}

/* Export Section */
.export-section {
    padding: 0 2rem 2rem;
}

.export-card {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    padding: 2rem;
}

body.dark .export-card {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.export-header {
    text-align: center;
    margin-bottom: 2rem;
}

.export-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.export-header p {
    color: var(--text-muted-light);
}

body.dark .export-header p {
    color: var(--text-muted-dark);
}

.export-options {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.export-option-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
    min-width: 120px;
}

body.dark .export-option-btn {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.export-option-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    background-color: var(--bg-light);
}

.export-option-btn i {
    font-size: 2rem;
}

.export-option-btn span {
    font-size: 0.875rem;
    font-weight: 600;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--surface-light);
    border-radius: 0.75rem;
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

body.dark .modal-content {
    background-color: var(--surface-dark);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

body.dark .modal-header {
    border-color: var(--border-dark);
}

.modal-close {
    font-size: 1.5rem;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text-muted-light);
}

body.dark .modal-close {
    color: var(--text-muted-dark);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

body.dark .modal-footer {
    border-color: var(--border-dark);
}

/* Form Styles */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

body.dark .form-group label {
    color: var(--text-dark);
}

.required {
    color: var(--danger);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background-color: var(--bg-light);
    color: var(--text-light);
    font-size: 0.875rem;
    font-family: inherit;
    transition: all 0.2s;
}

body.dark .form-group input,
body.dark .form-group select,
body.dark .form-group textarea {
    border-color: var(--border-dark);
    background-color: #1e293b;
    color: var(--text-dark);
}


/* ===========================
   ESTILOS MEDIOAMBIENTALES
   =========================== */

/* Environment Section */
.environment-section {
    padding: 1.5rem 2.5rem;
    margin-top: 1rem;
}

.environment-section .section-header {
    margin-bottom: 1.5rem;
}

.environment-section .section-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
}

body.dark .environment-section .section-header h3 {
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted-light);
    margin-top: 0.25rem;
}

body.dark .section-subtitle {
    color: var(--text-muted-dark);
}

/* Environment Stats Grid */
.environment-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Environment Cards */
.environment-card {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.2s;
}

body.dark .environment-card {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.environment-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.environment-card-header {
    padding: 1.5rem 1.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--border-light);
}

body.dark .environment-card-header {
    border-color: var(--border-dark);
}

.environment-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.environment-icon.carbon {
    background-color: rgba(52, 152, 219, 0.1);
    color: #3498db;
}

.environment-icon.fuel {
    background-color: rgba(241, 196, 15, 0.1);
    color: #f1c40f;
}

.environment-icon.sustainability {
    background-color: rgba(46, 204, 113, 0.1);
    color: #2ecc71;
}

.environment-icon.fleet {
    background-color: rgba(155, 89, 182, 0.1);
    color: #9b59b6;
}

.environment-info h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-light);
}

body.dark .environment-info h4 {
    color: var(--text-dark);
}

.environment-info p {
    font-size: 0.875rem;
    color: var(--text-muted-light);
}

body.dark .environment-info p {
    color: var(--text-muted-dark);
}

.environment-card-body {
    padding: 1.5rem;
}

/* Carbon Metrics */
.carbon-metric {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--text-light);
}

body.dark .metric-value {
    color: var(--text-dark);
}

.metric-unit {
    font-size: 0.875rem;
    color: var(--text-muted-light);
    font-weight: 500;
}

body.dark .metric-unit {
    color: var(--text-muted-dark);
}

.carbon-change {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.carbon-change.positive {
    color: var(--success);
}

.carbon-change.negative {
    color: var(--danger);
}

.carbon-change i {
    font-size: 0.75rem;
}

/* Carbon Breakdown */
.environment-card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-light);
    background-color: var(--bg-light);
}

body.dark .environment-card-footer {
    border-color: var(--border-dark);
    background-color: rgba(30, 41, 59, 0.3);
}

.carbon-breakdown {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.breakdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.breakdown-label {
    font-size: 0.75rem;
    color: var(--text-muted-light);
    text-align: center;
}

body.dark .breakdown-label {
    color: var(--text-muted-dark);
}

.breakdown-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-light);
}

body.dark .breakdown-value {
    color: var(--text-dark);
}

/* Fuel Metrics */
.fuel-metric {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.fuel-change {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--success);
}

.fuel-stats {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.fuel-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted-light);
}

body.dark .stat-label {
    color: var(--text-muted-dark);
}

.stat-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-light);
}

body.dark .stat-value {
    color: var(--text-dark);
}

.stat-value.positive {
    color: var(--success);
}

/* Sustainability Metrics */
.sustainability-metric {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.offset-progress {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.progress-bar {
    width: 100%;
    height: 0.5rem;
    background-color: var(--border-light);
    border-radius: 9999px;
    overflow: hidden;
}

body.dark .progress-bar {
    background-color: var(--border-dark);
}

.progress-fill {
    height: 100%;
    background-color: var(--success);
    border-radius: 9999px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.75rem;
    color: var(--text-muted-light);
    text-align: center;
}

body.dark .progress-text {
    color: var(--text-muted-dark);
}

.offset-programs {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.program-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

body.dark .program-item {
    color: var(--text-dark);
}

.program-item i {
    font-size: 1rem;
    color: var(--success);
}

/* Fleet Metrics */
.fleet-metric {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.fleet-composition {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.fleet-type {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background-color: var(--bg-light);
    border-radius: 0.5rem;
}

body.dark .fleet-type {
    background-color: rgba(30, 41, 59, 0.3);
}

.type-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-light);
}

body.dark .type-label {
    color: var(--text-dark);
}

.type-percent {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
}

.fleet-target {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.fleet-target span {
    font-size: 0.75rem;
    color: var(--text-muted-light);
    text-align: center;
}

body.dark .fleet-target span {
    color: var(--text-muted-dark);
}

.target-progress .progress-fill {
    background-color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .environment-stats {
        grid-template-columns: 1fr;
    }
    
    .carbon-breakdown,
    .fuel-stats,
    .offset-programs {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .breakdown-item,
    .fuel-stat {
        align-items: flex-start;
    }
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

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

.date-range-picker-modal {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background-color: var(--bg-light);
    color: var(--text-light);
}

body.dark .date-range-picker-modal {
    border-color: var(--border-dark);
    background-color: #1e293b;
    color: var(--text-dark);
}

.date-range-picker-modal i {
    color: var(--text-muted-light);
}

body.dark .date-range-picker-modal i {
    color: var(--text-muted-dark);
}

.date-range-picker-modal input {
    border: none;
    background: none;
    color: inherit;
    font-family: inherit;
    font-size: 0.875rem;
    outline: none;
    flex: 1;
}

.metrics-grid,
.recipients-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.metric-checkbox,
.recipient-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

body.dark .metric-checkbox,
body.dark .recipient-checkbox {
    color: var(--text-dark);
}

.error-message {
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: 0.25rem;
    min-height: 1rem;
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
}

.loading-overlay.show {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
    color: white;
    font-size: 1rem;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 1200px) {
    .chart-row:nth-child(3) {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 200px;
    }

    .header-content {
        flex-direction: column;
    }

    .date-range-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .quick-periods {
        justify-content: center;
    }

    .kpi-dashboard {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-row,
    .chart-row:nth-child(2),
    .chart-row:nth-child(3) {
        grid-template-columns: 1fr;
    }

    .reports-grid {
        grid-template-columns: 1fr;
    }

    .export-options {
        flex-direction: column;
        align-items: center;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .metrics-grid,
    .recipients-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .kpi-dashboard {
        grid-template-columns: 1fr;
    }
}