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

:root {
    --primary-color: #0066cc;
    --secondary-color: #004499;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-bg: #f5f5f5;
    --darker-bg: #ffffff;
    --card-bg: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f0f0f0 0%, #e8e8e8 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: block;
}

/* Login Screen */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    padding: 20px;
}

.login-box {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.login-header h1 {
    font-size: 28px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group label i {
    margin-right: 8px;
    color: var(--primary-color);
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    width: 100%;
    justify-content: center;
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

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

.login-footer {
    margin-top: 20px;
    text-align: center;
}

.login-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* Navbar */
.navbar {
    background: var(--card-bg);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 24px;
}

.nav-menu {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.nav-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Page Container */
.page {
    display: none;
    padding: 30px;
    flex: 1;
    width: 100%;
}

.page.active {
    display: block;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-status {
    display: flex;
    gap: 15px;
    align-items: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--card-bg);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--danger-color);
    animation: pulse 2s infinite;
}

.status-dot.active {
    background: var(--success-color);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.blue {
    background: rgba(0, 102, 204, 0.2);
    color: var(--primary-color);
}

.stat-icon.green {
    background: rgba(40, 167, 69, 0.2);
    color: var(--success-color);
}

.stat-icon.orange {
    background: rgba(255, 193, 7, 0.2);
    color: var(--warning-color);
}

.stat-icon.red {
    background: rgba(220, 53, 69, 0.2);
    color: var(--danger-color);
}

.stat-content h3 {
    font-size: 32px;
    margin-bottom: 5px;
    transition: all 0.3s;
}

.stat-content h3.value-updated {
    animation: valuePulse 0.5s ease-out;
}

@keyframes valuePulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); color: var(--primary-color); }
    100% { transform: scale(1); }
}

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

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

.machines-overview {
    box-shadow: var(--shadow);
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.chart-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.chart-card h3 {
    margin-bottom: 20px;
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.chart-card canvas {
    max-height: 300px;
}

/* Machines Overview */
.machines-overview {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.machines-overview h2 {
    margin-bottom: 20px;
    font-size: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.machines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.machine-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.machine-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.machine-card.has-alert {
    border-color: var(--warning-color);
    box-shadow: 0 0 15px rgba(255, 193, 7, 0.5);
    animation: alertPulse 2s infinite;
}

.machine-card.has-error {
    border-color: var(--danger-color);
    box-shadow: 0 0 15px rgba(220, 53, 69, 0.5);
    animation: alertPulse 1s infinite;
}

@keyframes alertPulse {
    0%, 100% { box-shadow: 0 0 15px rgba(255, 193, 7, 0.5); }
    50% { box-shadow: 0 0 25px rgba(255, 193, 7, 0.8); }
}

.machine-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.machine-card-header h3 {
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.machine-status {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.machine-status.active {
    background: rgba(40, 167, 69, 0.2);
    color: var(--success-color);
}

.machine-status.warning {
    background: rgba(255, 193, 7, 0.2);
    color: var(--warning-color);
}

.machine-status.inactive {
    background: rgba(108, 117, 125, 0.2);
    color: var(--text-secondary);
}

.machine-sensors {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 15px;
}

.sensor-item {
    display: flex;
    justify-content: space-between;
    padding: 8px;
    background: #f8f9fa;
    border-radius: 6px;
    font-size: 12px;
}

.sensor-item span:first-child {
    color: var(--text-secondary);
}

.sensor-item span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* Production Line */
.production-line-container {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    min-height: 400px;
    overflow-x: auto;
    overflow-y: hidden;
}

.production-line-container::-webkit-scrollbar {
    height: 12px;
}

.production-line-container::-webkit-scrollbar-track {
    background: #f0f0f0;
    border-radius: 6px;
}

.production-line-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 6px;
}

.production-line-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

#production-line-visualization {
    display: flex;
    flex-direction: row;
    gap: 0;
    align-items: center;
    min-width: fit-content;
    padding: 20px 0;
}

.line-segment {
    display: flex;
    align-items: center;
    gap: 0;
    flex-shrink: 0;
}

.line-connector {
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    position: relative;
    margin: 0 20px;
    flex-shrink: 0;
}

.line-connector::after {
    content: '';
    position: absolute;
    right: -8px;
    top: -4px;
    width: 0;
    height: 0;
    border-left: 12px solid var(--primary-color);
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.machine-visual {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    min-width: 280px;
    width: 280px;
    flex-shrink: 0;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    box-shadow: var(--shadow);
}

.machine-visual:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.machine-visual.active {
    border-color: var(--success-color);
}

.machine-visual.warning {
    border-color: var(--warning-color);
}

.machine-visual.inactive {
    border-color: var(--text-secondary);
    opacity: 0.6;
}

.machine-visual.has-alert {
    border-color: var(--warning-color);
    box-shadow: 0 0 20px rgba(255, 193, 7, 0.6);
    animation: alertPulse 2s infinite;
}

.machine-visual.has-error {
    border-color: var(--danger-color);
    box-shadow: 0 0 20px rgba(220, 53, 69, 0.6);
    animation: alertPulse 1s infinite;
}

.machine-visual-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.machine-visual-header h3 {
    font-size: 20px;
}

.machine-visual-sensors {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.machine-visual-sensor {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 6px;
    text-align: center;
    font-size: 11px;
}

.machine-visual-sensor i {
    display: block;
    font-size: 20px;
    margin-bottom: 5px;
    color: var(--primary-color);
}

/* Machine Detail */
.machine-detail-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.machine-status-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.status-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.status-card h3 {
    margin-bottom: 15px;
    color: var(--text-secondary);
    font-size: 14px;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
}

.sensors-tabs {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 20px;
    background: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.sensor-content {
    margin-top: 20px;
}

.sensor-view-toggle {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.view-btn {
    padding: 8px 16px;
    background: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.sensor-view {
    display: none;
}

.sensor-view.active {
    display: block;
}

.sensor-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.sensor-table thead {
    background: #f8f9fa;
}

.sensor-table th {
    padding: 15px;
    text-align: left;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
    border-bottom: 2px solid var(--border-color);
}

.sensor-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.sensor-table tbody tr:hover {
    background: #f8f9fa;
}

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

#sensor-detail-chart {
    max-height: 400px;
}

/* Map */
.map-container {
    position: relative;
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    min-height: 600px;
}

#map {
    width: 100%;
    height: 600px;
    border-radius: 8px;
    overflow: hidden;
}

.map-legend {
    position: absolute;
    top: 30px;
    right: 30px;
    background: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    z-index: 1000;
}

.map-legend h3 {
    margin-bottom: 15px;
    font-size: 16px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 14px;
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.legend-dot.active {
    background: var(--success-color);
}

.legend-dot.warning {
    background: var(--warning-color);
}

.legend-dot.inactive {
    background: var(--text-secondary);
}

/* Custom Map Markers */
.custom-marker {
    background: transparent;
    border: none;
}

/* Additional Status Colors */
.machine-status.success {
    background: rgba(40, 167, 69, 0.2);
    color: var(--success-color);
}

.machine-status.danger {
    background: rgba(220, 53, 69, 0.2);
    color: var(--danger-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.machine-card,
.stat-card,
.chart-card {
    animation: fadeIn 0.3s ease-out;
}

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

::-webkit-scrollbar-track {
    background: #f0f0f0;
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Footer */
.app-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 20px 30px;
    margin-top: auto;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.05);
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
    text-align: center;
    width: 100%;
}

.footer-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-content p:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

#dashboard-screen {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

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

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

    #production-line-visualization {
        flex-direction: column;
        align-items: center;
    }

    .line-segment {
        flex-direction: column;
        width: 100%;
    }

    .line-connector {
        width: 4px;
        height: 50px;
        margin: 20px 0;
    }

    .line-connector::after {
        right: -4px;
        top: auto;
        bottom: -8px;
        border-left: 6px solid transparent;
        border-right: 6px solid transparent;
        border-top: 12px solid var(--primary-color);
        border-bottom: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 10px;
    }

    .footer-content p {
        font-size: 12px;
    }
}