/* ==========================================================================
   Design Tokens & Themes
   ========================================================================== */

/* Dark Theme (Default) */
:root, [data-theme="dark"] {
    --bg-base: #0f141c;
    --bg-gradient: radial-gradient(circle at 15% 15%, #1a2332 0%, #0d1117 100%);

    /* Glassmorphism */
    --glass-surface: rgba(22, 29, 41, 0.65);
    --glass-surface-hover: rgba(30, 41, 59, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-light: rgba(255, 255, 255, 0.16);
    --glass-blur: blur(16px);
    --topbar-bg: rgba(15, 20, 28, 0.4);
    --input-bg: rgba(13, 17, 23, 0.6);
    --table-header-bg: #161f2c;
    --table-border: rgba(255, 255, 255, 0.18);

    /* Modal specific tokens (Dark) */
    --modal-overlay-bg: rgba(0, 0, 0, 0.4);
    --modal-surface: rgba(22, 29, 41, 0.65);
    --modal-table-bg: rgba(13, 17, 23, 0.3);
    --modal-badge-bg: rgba(13, 17, 23, 0.6);

    /* Shadows (Material Elevation) */
    --elevation-1: 0 4px 12px rgba(0, 0, 0, 0.25);
    --elevation-2: 0 8px 24px rgba(0, 0, 0, 0.35);
    --elevation-3: 0 16px 36px rgba(0, 0, 0, 0.45);

    /* Text & Accents */
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-blue: #388bfd;
    --accent-blue-hover: #58a6ff;
    --accent-blue-subtle: rgba(56, 139, 253, 0.15);
    --chart-line: rgba(255, 255, 255, 0.06);
    --tooltip-bg: rgba(15, 20, 28, 0.92);
    --calendar-filter: invert(1);
}

/* Light Theme */
[data-theme="light"] {
    --bg-base: #eef2f6;
    --bg-gradient: radial-gradient(circle at 15% 15%, #f8fafc 0%, #e2e8f0 100%);

    /* Glassmorphism */
    --glass-surface: rgba(255, 255, 255, 0.75);
    --glass-surface-hover: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.07);
    --glass-border-light: rgba(0, 0, 0, 0.12);
    --glass-blur: blur(16px);
    --topbar-bg: rgba(255, 255, 255, 0.6);
    --input-bg: rgba(255, 255, 255, 0.8);
    --table-header-bg: #f1f5f9;
    --table-border: rgba(0, 0, 0, 0.12);

    /* Modal specific tokens */
    --modal-overlay-bg: rgba(15, 23, 42, 0.2);
    --modal-surface: rgba(255, 255, 255, 0.94);
    --modal-table-bg: rgba(255, 255, 255, 0.65);
    --modal-badge-bg: rgba(241, 245, 249, 0.85);

    /* Shadows */
    --elevation-1: 0 4px 16px rgba(0, 0, 0, 0.05);
    --elevation-2: 0 8px 24px rgba(0, 0, 0, 0.08);
    --elevation-3: 0 16px 36px rgba(0, 0, 0, 0.12);

    /* Text & Accents */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --accent-blue: #2563eb;
    --accent-blue-hover: #1d4ed8;
    --accent-blue-subtle: rgba(37, 99, 235, 0.1);
    --chart-line: rgba(0, 0, 0, 0.07);
    --tooltip-bg: rgba(255, 255, 255, 0.95);
    --calendar-filter: invert(0);
}

:root {
    --status-online: #22c55e;
    --status-offline: #ef4444;
    --status-offline-subtle: rgba(239, 68, 68, 0.15);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background: var(--bg-base);
    background-image: var(--bg-gradient);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Screens */
.screen {
    display: none;
    height: 100vh;
    width: 100vw;
}

.screen.active {
    display: flex;
}

/* ==========================================================================
   Login Screen
   ========================================================================== */
#login-screen {
    justify-content: center;
    align-items: center;
    position: relative;
}

.login-theme-wrapper {
    position: absolute;
    top: 24px;
    right: 24px;
}

.login-container {
    background: var(--glass-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    padding: 44px 36px;
    border-radius: 16px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--elevation-3);
    transition: background var(--transition-smooth), border-color var(--transition-smooth);
}

.login-container h2 {
    margin-bottom: 28px;
    text-align: center;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--glass-border);
    background: var(--input-bg);
    color: var(--text-primary);
    border-radius: 8px;
    outline: none;
    font-size: 15px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--accent-blue-subtle);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkbox-group label {
    margin: 0;
    text-transform: none;
    font-size: 14px;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    accent-color: var(--accent-blue);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* Buttons */
.btn {
    width: 100%;
    padding: 13px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.4px;
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    box-shadow: var(--elevation-1);
}

.btn-primary:hover {
    background: var(--accent-blue-hover);
    box-shadow: var(--elevation-2);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

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

.btn-secondary:hover {
    background: var(--glass-surface-hover);
    border-color: var(--glass-border-light);
}

.error-msg {
    color: var(--status-offline);
    margin-top: 14px;
    font-size: 13px;
    text-align: center;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: var(--glass-surface);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle-btn:hover {
    border-color: var(--glass-border-light);
    background: var(--glass-surface-hover);
}

/* ==========================================================================
   Main Application Layout
   ========================================================================== */
#main-screen {
    position: relative;
    background: transparent;
}

.sidebar {
    width: 270px;
    background: var(--glass-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: 20;
    transition: transform var(--transition-smooth), background var(--transition-smooth);
}

.sidebar-header {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-header h2 {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: 20px 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 18px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-item:hover {
    background: var(--glass-surface-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-blue-subtle);
    color: var(--accent-blue-hover);
    border-left: 3px solid var(--accent-blue);
    padding-left: 15px;
}

.sidebar-footer {
    padding: 20px 16px;
    border-top: 1px solid var(--glass-border);
}

/* Content Area */
.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.topbar {
    background: var(--topbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 16px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.topbar-left {
    display: flex;
    align-items: center;
}

.topbar-title {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.2px;
}

.mobile-menu, .mobile-close {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text-secondary);
}

.views-container {
    padding: 28px;
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.view {
    display: none;
    animation: fadeIn var(--transition-smooth);
}

.view.active {
    display: block;
}

/* Full height views for tables */
.view-full-height.active {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    height: 100%;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cards (Counters & Charts) */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.card {
    background: var(--glass-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--elevation-1);
    border: 1px solid var(--glass-border);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
    border-color: var(--glass-border-light);
    box-shadow: var(--elevation-2);
}

.card h3 {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-weight: 600;
    margin-bottom: 12px;
}

.stat-value {
    font-size: 34px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

/* Charts Grid */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 20px;
}

.chart-card {
    min-height: 250px;
    display: flex;
    flex-direction: column;
}

/* Dashboard SVG Line Charts & Scale Selector */
.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.chart-header h3 {
    margin-bottom: 0;
}

/* Time range segmented buttons */
.range-selector {
    display: flex;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    padding: 2px;
    gap: 2px;
}

.range-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 4px 9px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.range-btn:hover {
    color: var(--text-primary);
}

.range-btn.active {
    background: var(--accent-blue);
    color: #fff;
    box-shadow: var(--elevation-1);
}

/* SVG Chart Box */
.chart-wrapper {
    position: relative;
    width: 100%;
    flex: 1;
    min-height: 180px;
    display: flex;
    flex-direction: column;
}

.chart-svg-container {
    position: relative;
    width: 100%;
    height: 150px;
}

.chart-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
    display: block;
    cursor: crosshair;
}

.chart-grid-line {
    stroke: var(--chart-line);
    stroke-width: 1;
    stroke-dasharray: 4 4;
}

.chart-y-label {
    fill: var(--text-secondary);
    font-size: 10px;
    font-weight: 500;
    user-select: none;
}

.chart-path {
    fill: none;
    stroke: var(--accent-blue-hover);
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chart-area {
    opacity: 0.25;
}

/* Red-themed Chart Styling for Errors */
.chart-red .chart-path {
    stroke: var(--status-offline);
}

.chart-red .chart-hover-line {
    stroke: var(--status-offline);
}

.chart-red .chart-hover-dot {
    fill: var(--status-offline);
}

.chart-red .chart-tooltip-value {
    color: var(--status-offline);
}

/* Interactive Cursor / Hover Elements */
.chart-hover-line {
    stroke: var(--accent-blue);
    stroke-width: 1.5;
    stroke-dasharray: 3 3;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.chart-hover-dot {
    fill: var(--accent-blue-hover);
    stroke: var(--bg-base);
    stroke-width: 2.5;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.chart-hover-line.active,
.chart-hover-dot.active {
    opacity: 1;
}

/* Floating Tooltip */
.chart-tooltip {
    position: absolute;
    top: 10px;
    left: 10px;
    pointer-events: none;
    opacity: 0;
    background: var(--tooltip-bg);
    border: 1px solid var(--glass-border-light);
    border-radius: 6px;
    padding: 6px 10px;
    box-shadow: var(--elevation-2);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--text-primary);
    font-size: 12px;
    z-index: 10;
    transform: translate(-50%, -100%);
    margin-top: -8px;
    transition: opacity var(--transition-fast), transform 0.05s ease-out;
    white-space: nowrap;
}

.chart-tooltip.active {
    opacity: 1;
}

.chart-tooltip-value {
    font-weight: 700;
    color: var(--accent-blue-hover);
    margin-bottom: 2px;
}

.chart-tooltip-time {
    font-size: 10px;
    color: var(--text-secondary);
}

/* Time axis labels */
.chart-time-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 14px;
    padding-bottom: 4px;
    padding-left: 38px;
    font-size: 11px;
    color: var(--text-secondary);
    user-select: none;
}

/* ==========================================================================
   Tables
   ========================================================================== */
.table-toolbar {
    margin-bottom: 16px;
    display: flex;
    justify-content: flex-end;
    flex-shrink: 0;
}

.search-input {
    padding: 10px 16px;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-primary);
    width: 260px;
    outline: none;
    font-size: 14px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--accent-blue-subtle);
}

.table-responsive {
    overflow-x: auto;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    border: 1px solid var(--table-border);
    border-radius: 12px;
    background: var(--glass-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--elevation-1);
    position: relative;
}

/* Specific styling for Information view table: no flex stretch */
.info-table-container {
    flex: none;
    width: 100%;
    max-width: 760px;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    text-align: left;
}

.data-table th {
    position: sticky;
    top: 0;
    background: var(--table-header-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: 14px 16px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--table-border);
    cursor: pointer;
    user-select: none;
    z-index: 2;
}

.data-table th:first-child {
    border-top-left-radius: 11px;
}

.data-table th:last-child {
    border-top-right-radius: 11px;
}

.data-table th:hover {
    color: var(--text-primary);
}

.data-table td {
    padding: 14px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--glass-border);
    color: var(--text-primary);
}

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

.data-table tbody tr:last-child td:first-child {
    border-bottom-left-radius: 11px;
}

.data-table tbody tr:last-child td:last-child {
    border-bottom-right-radius: 11px;
}

.data-table tbody tr {
    cursor: pointer;
    transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
    background: var(--glass-surface-hover);
}

.info-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.info-table tr:first-child td:first-child {
    border-top-left-radius: 11px;
}

.info-table tr:first-child td:last-child {
    border-top-right-radius: 11px;
}

.info-table tr:last-child td:first-child {
    border-bottom-left-radius: 11px;
}

.info-table tr:last-child td:last-child {
    border-bottom-right-radius: 11px;
}

.info-table td {
    padding: 18px 16px;
    border-bottom: 1px solid var(--glass-border);
    font-size: 14px;
}

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

.info-table tr td:first-child {
    font-weight: 500;
    color: var(--text-secondary);
    width: 35%;
}

/* ==========================================================================
   Information View Actions & Date Picker
   ========================================================================== */
.info-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 24px;
    flex-shrink: 0;
}

.date-picker-wrapper {
    position: relative;
    display: inline-flex;
}

.date-picker-input {
    padding: 12px 16px;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.date-picker-input::-webkit-calendar-picker-indicator {
    cursor: pointer;
    filter: var(--calendar-filter);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.date-picker-input::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

.date-picker-input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--accent-blue-subtle);
}

.action-btn {
    width: auto;
    padding: 12px 24px;
}

/* ==========================================================================
   Modal Dialog
   ========================================================================== */
.modal {
    position: fixed;
    z-index: 100;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    background-color: rgba(0, 0, 0, 0);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    transition:
            opacity var(--transition-smooth),
            visibility var(--transition-smooth),
            background-color var(--transition-smooth),
            backdrop-filter var(--transition-smooth),
            -webkit-backdrop-filter var(--transition-smooth);
}

.modal.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    background-color: var(--modal-overlay-bg);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--modal-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border-light);
    box-shadow: var(--elevation-3);
    padding: 32px;
    border-radius: 14px;
    width: 90%;
    max-width: 900px;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    color: var(--text-primary);
    transform: scale(0.95) translateY(8px);
    transition: transform var(--transition-smooth), background var(--transition-smooth);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-content h2 {
    font-size: 20px;
    margin-bottom: 20px;
    font-weight: 600;
    padding-right: 30px;
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 18px;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

/* ==========================================================================
   Customer Details Modal Layout & Badges
   ========================================================================== */
.modal-badges-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}

.info-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--modal-badge-bg);
    border: 1px solid var(--glass-border);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.badge-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-value {
    color: var(--text-primary);
    font-weight: 600;
}

.modal-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-top: 24px;
    margin-bottom: 12px;
}

.modal-table-wrapper {
    background: var(--modal-table-bg);
    border: 1px solid var(--table-border);
    border-radius: 10px;
    overflow-x: auto;
    overflow-y: hidden;
    margin-bottom: 12px;
}

.modal-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 13px;
    text-align: left;
}

.modal-table th {
    background: var(--table-header-bg);
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--table-border);
    white-space: nowrap;
}

.modal-table th:first-child {
    border-top-left-radius: 9px;
}

.modal-table th:last-child {
    border-top-right-radius: 9px;
}

.modal-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--glass-border);
    color: var(--text-primary);
    white-space: nowrap;
}

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

.modal-table tbody tr:last-child td:first-child {
    border-bottom-left-radius: 9px;
}

.modal-table tbody tr:last-child td:last-child {
    border-bottom-right-radius: 9px;
}

.modal-table td.center-align {
    text-align: center;
}

.modal-empty-msg {
    text-align: center;
    color: var(--text-secondary);
    padding: 16px;
    font-size: 13px;
}

/* ==========================================================================
   Mobile & Responsive Layout
   ========================================================================== */
@media (max-width: 900px) {
    .charts-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        height: 100vh;
        z-index: 50;
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: var(--elevation-3);
    }

    .mobile-menu {
        display: block;
        margin-right: 12px;
    }

    .mobile-close {
        display: block;
    }

    .views-container {
        padding: 16px;
    }

    .topbar {
        padding: 14px 16px;
    }

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

    .chart-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .range-selector {
        width: 100%;
        justify-content: space-between;
    }

    .range-btn {
        flex: 1;
        text-align: center;
    }

    .modal-content {
        padding: 24px 18px;
        width: 95%;
    }

    .info-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .action-btn {
        width: 100%;
    }
}