/* ===== CSS VARIABLES ===== */
:root {
    /* Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f1f3f5;
    --bg-hover: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --border-light: #e9ecef;

    /* Accent Colors */
    --accent: #06c167;
    --accent-dark: #05a857;
    --accent-light: #e6f7ef;
    --secondary: #5c6ac4;
    --secondary-dark: #4c5ab8;
    --secondary-light: #eef0f9;
    --danger: #e53e3e;
    --danger-dark: #c53030;
    --danger-light: #fff5f5;

    /* Calculated Fields */
    --calculated-bg: #faf5ff;
    --calculated-text: #6b46c1;
    --calculated-border: #e9d8fd;

    /* Maintenance Colors */
    --maintenance-required-bg: #fff5f5;
    --maintenance-required-border: #feb2b2;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md:
        0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg:
        0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 40px;
}

html.dark-mode {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #4a5568;
    --bg-hover: #5a6c7d;
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #cbd5e0;
    --border-color: #4a5568;
    --border-light: #4a5568;

    --accent-light: #1a3a2e;
    --secondary-light: #2d3250;
    --danger-light: #3a2020;

    --calculated-bg: #2d1b4e;
    --calculated-text: #d6bcfa;
    --calculated-border: #553c7b;

    --maintenance-required-bg: #3a2020;
    --maintenance-required-border: #9b2c2c;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md:
        0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg:
        0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
}

/* ===== MAIN STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    padding: var(--spacing-lg);
    transition:
        background-color var(--transition-base),
        color var(--transition-base);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* ===== HEADER ===== */
.header {
    position: relative;
    height: auto;
}

.header-content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

h1 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--accent);
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 svg {
    color: var(--accent);
    width: 45px;
    height: 45px;
}

.theme-toggle {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
    background: var(--bg-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.theme-toggle svg {
    color: var(--text-secondary);
}

/* ===== VIEW TOGGLE ===== */
.view-toggle-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.view-toggle {
    display: inline-flex;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
    box-shadow: var(--shadow-sm);
}

.view-toggle-option {
    padding: 8px 20px;
    border-radius: 7px;
    font-size: 0.875rem;
    font-weight: 600;
    background: transparent;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
}

.view-toggle-option:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.view-toggle-option.active {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-sm);
}

.view-toggle-option.active:hover {
    background: var(--accent-dark);
}

.maintenance-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--danger);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 9px;
    line-height: 1;
}

.view-toggle-option.active .maintenance-badge {
    background: white;
    color: var(--danger);
}

/* ===== STATS TOGGLE ===== */
.stats-toggle-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-md);
}

.stats-toggle {
    display: inline-flex;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
    box-shadow: var(--shadow-sm);
}

.toggle-option {
    padding: 8px 20px;
    border-radius: 7px;
    font-size: 0.875rem;
    font-weight: 600;
    background: transparent;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.toggle-option:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.toggle-option.active {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-sm);
}

.toggle-option.active:hover {
    background: var(--accent-dark);
}

.custom-date-range {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    animation: slideDown 0.3s ease;
}

.date-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.date-input-group label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.date-input-group input[type="date"] {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    font-family: inherit;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    min-width: 150px;
}

.date-input-group input[type="date"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* ===== STATS GRID ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.earnings-icon {
    background: var(--accent-light);
    color: var(--accent);
}

.hours-icon {
    background: var(--secondary-light);
    color: var(--secondary);
}

.rate-icon {
    background: #fff7ed;
    color: #ea580c;
}

html.dark-mode .rate-icon {
    background: #3a2817;
}

.miles-icon {
    background: #eff6ff;
    color: #2563eb;
}

html.dark-mode .miles-icon {
    background: #1e293b;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    font-variant-numeric: tabular-nums;
    transition: all var(--transition-base);
}

/* Loading state for stats */
.stat-value.loading {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-hover) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
    color: transparent;
    user-select: none;
}

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

    100% {
        background-position: -200% 0;
    }
}

@keyframes statUpdate {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.stat-value.updating {
    animation: statUpdate 0.3s ease;
}

/* ===== ACTIVE SHIFT BANNER ===== */
.active-shift-banner {
    background: linear-gradient(
        135deg,
        var(--accent) 0%,
        var(--accent-dark) 100%
    );
    color: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-md);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.banner-content strong {
    font-size: 1.125rem;
    display: block;
    margin-bottom: 4px;
}

.shift-info-text {
    font-size: 0.875rem;
    opacity: 0.95;
}

/* ===== CONTROLS SECTION ===== */
.controls-section {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.shift-controls,
.maintenance-controls {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.odo-input {
    flex: 1;
    min-width: 200px;
}

.table-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.maintenance-controls + .table-actions {
    margin-top: 0;
    padding-top: var(--spacing-md);
}

.search-box {
    flex: 1;
    min-width: 200px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-box svg {
    position: absolute;
    left: 12px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding-left: 40px;
}

/* ===== BUTTONS ===== */
button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
    font-family: inherit;
}

button:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--accent-dark);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
    background: var(--danger-dark);
    box-shadow: var(--shadow-md);
}

.btn-export {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-export:hover {
    opacity: 0.9;
}

.btn-delete-small {
    padding: 6px 10px;
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
}

.btn-delete-small:hover {
    background: var(--danger);
    color: white;
}

/* ===== INPUTS ===== */
input,
textarea {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.875rem;
    font-family: inherit;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

textarea {
    resize: vertical;
    line-height: 1.5;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    margin: 0;
}

/* ===== TABLE ===== */
.table-container {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

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

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

th,
td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-fast);
}

th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

th:hover {
    background: var(--bg-hover);
}

th[data-sort] {
    position: relative;
    padding-right: 28px;
}

.sort-icon {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.3;
}

.sort-icon::after {
    content: "⇅";
}

th.sort-asc .sort-icon::after {
    content: "↑";
    opacity: 1;
}

th.sort-desc .sort-icon::after {
    content: "↓";
    opacity: 1;
}

tbody tr {
    transition: background-color var(--transition-fast);
}

tbody tr:hover {
    background: var(--bg-hover);
}

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

td[contenteditable="true"] {
    cursor: text;
    position: relative;
}

td[contenteditable="true"]:hover {
    background: var(--accent-light);
    outline: 1px solid var(--accent);
}

td[contenteditable="true"]:focus {
    background: var(--bg-primary);
    outline: 2px solid var(--accent);
    box-shadow: inset 0 0 0 2px var(--accent);
}

.calculated {
    background: var(--calculated-bg);
    color: var(--calculated-text);
    font-weight: 600;
}

.money {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.editable-money::before {
    content: "$";
    margin-right: 2px;
    opacity: 0.6;
}

.datetime-cell {
    cursor: pointer;
    position: relative;
}

.datetime-cell:hover {
    background: var(--accent-light);
    outline: 1px solid var(--accent);
}

.notes-cell {
    max-width: 250px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.action-cell {
    text-align: center;
    width: 80px;
}

/* ===== FOOTER ===== */
.app-footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    opacity: 0.8;
}

.enabled-cell {
    cursor: pointer;
    user-select: none;
    font-weight: 600;
    text-align: center;
}

.enabled-cell:hover {
    background: var(--accent-light);
}

.enabled-yes {
    color: var(--accent);
}

.enabled-no {
    color: var(--text-muted);
}

.maintenance-required {
    background: var(--maintenance-required-bg) !important;
    border-left: 3px solid var(--danger);
}

.maintenance-required:hover {
    background: var(--danger-light) !important;
}

/* Override calculated styling for cells in overdue maintenance rows */
.maintenance-required td.calculated {
    background: var(--maintenance-required-bg) !important;
    color: var(--text-primary);
}

.maintenance-required:hover td.calculated {
    background: var(--danger-light) !important;
}

.empty-state td {
    padding: var(--spacing-xl) !important;
    text-align: center;
    border: none !important;
}

.empty-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-muted);
}

.empty-content svg {
    opacity: 0.3;
    margin-bottom: var(--spacing-sm);
}

.empty-content p {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ===== MODAL ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1001;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.modal-header h2 {
    color: var(--accent);
    font-size: 1.5rem;
    font-weight: 700;
}

.modal-close {
    background: transparent;
    padding: var(--spacing-sm);
    border-radius: 6px;
    color: var(--text-muted);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.modal-footer {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    justify-content: flex-end;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

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

.input-with-icon {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-weight: 500;
}

.input-with-icon input {
    padding-left: 32px;
}

.form-group input,
.form-group textarea {
    width: 100%;
}

/* ===== TOAST ===== */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition-base);
    z-index: 2000;
    max-width: 400px;
    font-weight: 500;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    background: var(--accent);
    color: white;
}

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

/* ===== LOADING ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--bg-primary);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== DEMO BANNER ===== */
.demo-banner {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-md);
    animation: slideDown 0.3s ease;
    position: absolute;
    z-index: 10;
    right: var(--spacing-lg);
}

.demo-banner.dismissing {
    animation: slideUp 0.3s ease forwards;
}

@keyframes slideUp {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

.demo-banner .banner-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    flex: 1;
}

.demo-banner .banner-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.demo-banner .banner-text strong {
    font-size: 16px;
    font-weight: 600;
}

.demo-banner .banner-text span {
    font-size: 14px;
    opacity: 0.95;
    line-height: 1.5;
}

.demo-banner .banner-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 6px;
    padding: var(--spacing-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
    flex-shrink: 0;
    color: white;
}

.demo-banner .banner-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.demo-banner svg {
    flex-shrink: 0;
}

/* ===== UTILITIES ===== */
.hidden {
    display: none !important;
}

/* ===== TABLE SCROLL ENHANCEMENTS =====
   These apply at any viewport size — fades and sticky column activate
   whenever the table is actually scrollable (controlled via JS classes). */

/* Fades live on .table-container (non-scrolling) so they stay pinned
   to the visible edges while content scrolls beneath them. */
.table-container {
    position: relative;
}

/* Right fade — hidden by default, shown via .can-scroll-right (set by JS).
   Only active when the table has data (.has-data). */
.table-container.has-data::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 48px;
    background: linear-gradient(to right, transparent, var(--bg-primary));
    pointer-events: none;
    border-radius: 0 12px 12px 0;
    transition: opacity var(--transition-base);
    opacity: 0;
    z-index: 3;
}

.table-container.has-data.can-scroll-right::after {
    opacity: 1;
}

.table-container.has-data.scrolled-end::after {
    opacity: 0;
}

/* Left fade — hidden by default, visible once user scrolls right.
   Offset by --sticky-col-width so it doesn't fade over the pinned column.
   Only active when the table has data (.has-data). */
.table-container.has-data::before {
    content: "";
    position: absolute;
    top: 0;
    left: var(--sticky-col-width, 0px);
    bottom: 0;
    width: 48px;
    background: linear-gradient(to left, transparent, var(--bg-primary));
    pointer-events: none;
    border-radius: 0;
    transition: opacity var(--transition-base);
    opacity: 0;
    z-index: 3;
}

.table-container.has-data.scrolled-start::before {
    opacity: 1;
}

/* Drag-to-scroll cursor states */
.table-wrapper.is-scrollable {
    cursor: grab;
}

.table-wrapper.is-dragging {
    cursor: grabbing;
    user-select: none;
}

/* Sticky first column — only when table has data */
.table-container.has-data #shiftsTable thead tr th:first-child,
.table-container.has-data #maintenanceTable thead tr th:first-child {
    position: sticky;
    left: 0;
    z-index: 11;
    background: var(--bg-tertiary);
}

.table-container.has-data #shiftsTable thead tr th:first-child:hover,
.table-container.has-data #maintenanceTable thead tr th:first-child:hover {
    background: var(--bg-hover);
}

.table-container.has-data #shiftsTable tbody tr td:first-child,
.table-container.has-data #maintenanceTable tbody tr td:first-child {
    position: sticky;
    left: 0;
    z-index: 1;
    background: var(--bg-primary);
    box-shadow: 2px 0 6px -2px rgba(0, 0, 0, 0.12);
}

/* Re-declare all interactive states for the sticky td — the explicit
   background above would otherwise win over inherited row states. */
.table-container.has-data #shiftsTable tbody tr:hover td:first-child,
.table-container.has-data #maintenanceTable tbody tr:hover td:first-child {
    background: var(--bg-hover);
}

.table-container.has-data
    #shiftsTable
    tbody
    tr
    td:first-child.datetime-cell:hover,
.table-container.has-data
    #maintenanceTable
    tbody
    tr
    td:first-child.datetime-cell:hover {
    background: var(--accent-light);
}

.table-container.has-data
    #shiftsTable
    tbody
    tr
    td:first-child[contenteditable="true"]:hover,
.table-container.has-data
    #maintenanceTable
    tbody
    tr
    td:first-child[contenteditable="true"]:hover {
    background: var(--accent-light);
}

.table-container.has-data
    #shiftsTable
    tbody
    tr
    td:first-child[contenteditable="true"]:focus,
.table-container.has-data
    #maintenanceTable
    tbody
    tr
    td:first-child[contenteditable="true"]:focus {
    background: var(--bg-primary);
}

.table-container.has-data #shiftsTable tbody tr td:first-child.calculated,
.table-container.has-data #maintenanceTable tbody tr td:first-child.calculated {
    background: var(--calculated-bg);
}

.table-container.has-data
    #maintenanceTable
    tbody
    tr.maintenance-required
    td:first-child {
    background: var(--maintenance-required-bg);
}

.table-container.has-data
    #maintenanceTable
    tbody
    tr.maintenance-required:hover
    td:first-child {
    background: var(--danger-light);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-md);
    }

    .header {
        height: auto;
        margin-bottom: var(--spacing-lg);
    }

    .header-content {
        position: static;
    }

    h1 {
        font-size: 1.5rem;
    }

    h1 svg {
        width: 30px;
        height: 30px;
    }

    .view-toggle,
    .stats-toggle {
        flex-direction: column;
        width: 100%;
    }

    .view-toggle-option,
    .toggle-option {
        width: 100%;
        text-align: center;
    }

    .custom-date-range {
        flex-direction: column;
        width: 100%;
    }

    .date-input-group {
        width: 100%;
    }

    .date-input-group input[type="date"] {
        width: 100%;
    }

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

    .stat-value {
        font-size: 1.5rem;
    }

    .active-shift-banner {
        flex-direction: column;
        align-items: flex-start;
    }

    .controls-section {
        margin-top: 0px;
    }

    .shift-controls,
    .maintenance-controls {
        flex-direction: column;
    }

    .odo-input,
    .shift-controls button,
    .maintenance-controls button {
        width: 100%;
    }

    .table-actions {
        flex-direction: column;
    }

    .search-box {
        width: 100%;
    }

    th,
    td {
        padding: 8px 12px;
        font-size: 0.8125rem;
    }

    .notes-cell {
        max-width: 150px;
    }

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

    .modal-footer {
        flex-direction: column;
    }

    .modal-footer button {
        width: 100%;
    }

    .demo-banner {
        left: var(--spacing-lg);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-md);
    }

    .demo-banner .banner-close {
        align-self: flex-end;
    }
}

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

    .stat-card {
        padding: var(--spacing-md);
    }

    .stat-icon {
        width: 40px;
        height: 40px;
    }

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

    th,
    td {
        padding: 6px 8px;
        font-size: 0.75rem;
    }

    button {
        padding: 12px 16px;
        font-size: 0.9375rem;
    }
}