/* Import modern, premium fonts optimized for Vietnamese language */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* EVN SCADA / IOC Light Theme Styles */
:root {
    --evn-blue: #005A9C;
    --evn-blue-hover: #004b87;
    --evn-blue-light: #e6f0fa;
    --bg-main: #f1f5f9;
    --bg-card: #ffffff;
    --border-color: #cbd5e1;
    --border-color-light: #e2e8f0;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-white: #ffffff;
    
    /* Status Colors */
    --status-good: #10b981;
    --status-good-bg: #d1fae5;
    --status-warning: #f59e0b;
    --status-warning-bg: #fef3c7;
    --status-danger: #ef4444;
    --status-danger-bg: #fee2e2;
    --status-info: #3b82f6;
    --status-info-bg: #dbeafe;
}

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

body {
    font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    line-height: 1.5; /* Optimized vertical spacing for Vietnamese tone marks */
}

/* App Container Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* Header Styling */
.header {
    height: 65px;
    min-height: 65px;
    max-height: 65px;
    background-color: var(--bg-card);
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
    z-index: 100;
    flex-shrink: 0;
}

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

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-evn {
    height: 45px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.logo-divider {
    width: 1px;
    height: 36px;
    background-color: var(--border-color);
    flex-shrink: 0;
}

.system-title-block {
    display: flex;
    flex-direction: column;
}

.system-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--evn-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.system-address {
    font-size: 11px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 2px;
}

.header-center {
    display: flex;
    align-items: center;
    gap: 20px;
    background-color: #f8fafc;
    border: 1px solid var(--border-color-light);
    height: 36px;
    padding: 0 16px;
    border-radius: 8px;
}

.weather-widget {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-main);
}

.weather-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.weather-item i {
    color: var(--evn-blue);
    font-size: 14px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.clock-widget {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.realtime-time {
    font-size: 16px;
    font-weight: 700;
    color: var(--evn-blue);
    font-family: monospace;
}

.realtime-date {
    font-size: 11px;
    color: var(--text-muted);
}

.status-badge {
    background-color: var(--status-good-bg);
    color: var(--status-good);
    height: 36px;
    padding: 0 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid rgba(16, 185, 129, 0.2);
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--status-good);
}

.notification-bell {
    font-size: 20px;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}

.notification-bell:hover {
    color: var(--evn-blue);
}

.bell-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: var(--status-danger);
    color: white;
    font-size: 9px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

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

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--evn-blue-light);
    color: var(--evn-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    border: 1px solid var(--border-color);
}

.status-badge-mini {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
}
.status-badge-mini.status-good { background-color: var(--status-good-bg); color: var(--status-good); }
.status-badge-mini.status-warning { background-color: var(--status-warning-bg); color: var(--status-warning); }
.status-badge-mini.status-danger { background-color: var(--status-danger-bg); color: var(--status-danger); }

/* Sidebar and Workspace Area */
.workspace {
    display: flex;
    flex-grow: 1;
    height: calc(100vh - 65px);
    width: 100vw;
}

/* Sidebar Layout */
.sidebar {
    width: 240px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 15px 10px;
    overflow-y: auto;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.menu-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    color: #475569;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 13px;
    transition: all 0.15s ease;
}

.menu-item-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-item-left i {
    font-size: 16px;
    width: 20px;
    text-align: center;
    color: var(--text-muted);
}

.menu-item:hover {
    background-color: #f1f5f9;
    color: var(--text-main);
}

.menu-item.active {
    background-color: var(--evn-blue);
    color: var(--text-white);
}

.menu-item.active i {
    color: var(--text-white);
}

.badge-new {
    background-color: var(--status-danger);
    color: white;
    font-size: 9px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
}

/* Main Dashboard Panel */
.dashboard-panel {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 15px;
    gap: 15px;
}

.tab-panel {
    display: none;
    flex-direction: column;
    gap: 15px;
    height: 100%;
}

.tab-panel.active {
    display: flex;
}

/* Forecast Tab Toolbar */
.forecast-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: 10px;
    padding: 10px 18px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.03);
    flex-shrink: 0;
}

.forecast-toolbar-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.forecast-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-main);
}

.forecast-horizon-tabs {
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: var(--bg-main);
    border-radius: 8px;
    padding: 4px;
}

.horizon-btn {
    padding: 6px 18px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.horizon-btn:hover {
    background-color: var(--evn-blue-light);
    color: var(--evn-blue);
}

.horizon-btn.active {
    background-color: var(--evn-blue);
    color: #fff;
    box-shadow: 0 2px 6px rgba(0, 90, 156, 0.3);
}

/* KPI Panel (Row of 7 Cards) */
.kpi-row {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
}

.kpi-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: 10px;
    padding: 12px 14px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100px;
    position: relative;
    overflow: hidden;
}

.kpi-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.kpi-card-header i {
    font-size: 13px;
    color: var(--evn-blue);
}

.kpi-card-body {
    margin-top: 5px;
    display: flex;
    align-items: baseline;
    gap: 5px;
}

.kpi-card-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
}

.kpi-card-unit {
    font-size: 11px;
    color: var(--text-muted);
}

.kpi-card-trend {
    font-size: 10px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 3px;
}

.kpi-card-trend.up { color: var(--status-danger); }
.kpi-card-trend.down { color: var(--status-info); }
.kpi-card-trend.stable { color: var(--text-muted); }

.kpi-card-footer {
    font-size: 9.5px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color-light);
    padding-top: 4px;
    margin-top: 4px;
    display: flex;
    justify-content: space-between;
}

.kpi-gauge-container {
    position: absolute;
    right: 4px;
    top: 10px;
    width: 60px;
    height: 60px;
}

/* Inner Layout Grid (Charts - Map - Ops) */
.inner-grid {
    display: grid;
    grid-template-columns: 320px 1fr 340px;
    gap: 15px;
    flex-grow: 1;
    overflow: hidden;
}

/* Card Styling */
.scada-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-light);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.scada-card-header {
    background-color: #f8fafc;
    border-bottom: 1px solid var(--border-color-light);
    padding: 10px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.scada-card-header h3 {
    font-size: 13px;
    font-weight: 700;
    color: var(--evn-blue);
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
}

.scada-card-header h3 i {
    font-size: 14px;
}

.scada-card-body {
    padding: 12px;
    flex-grow: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Left Column: Stacked Charts */
.left-column {
    display: flex;
    flex-direction: column;
    gap: 15px;
    overflow-y: auto;
}

.left-column .scada-card {
    min-height: 220px;
    flex-grow: 1;
}

.chart-container-mini {
    flex-grow: 1;
    width: 100%;
    height: 150px;
}

/* Center Column: GIS Map */
.center-column {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.map-container-wrapper {
    flex-grow: 1;
    position: relative;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

#map {
    width: 100%;
    height: 100%;
    background-color: #f1f5f9;
}

/* Map Toolbar */
.map-toolbar {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 10;
}

.map-btn {
    width: 36px;
    height: 36px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    color: var(--text-main);
    transition: all 0.15s;
}

.map-btn:hover {
    background-color: var(--evn-blue-light);
    color: var(--evn-blue);
    border-color: var(--evn-blue);
}

/* Map Legend */
.map-legend {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    z-index: 10;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    font-size: 11px;
}

.map-legend-title {
    font-weight: bold;
    margin-bottom: 6px;
    color: var(--evn-blue);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    border: 1px solid rgba(0,0,0,0.1);
}

/* Right Column: Operations Panel */
.right-column {
    display: flex;
    flex-direction: column;
    gap: 15px;
    overflow-y: auto;
}

.ops-section-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color-light);
    padding-bottom: 4px;
    margin-bottom: 6px;
    text-transform: uppercase;
}

/* Spillway gate item */
.gate-item {
    background-color: #f8fafc;
    border: 1px solid var(--border-color-light);
    border-radius: 8px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.gate-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gate-title {
    font-weight: bold;
    font-size: 12px;
}

.gate-status-badge {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: bold;
}

.gate-status-badge.open { background-color: var(--status-good-bg); color: var(--status-good); }
.gate-status-badge.closed { background-color: var(--border-color-light); color: var(--text-muted); }

.gate-control-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.gate-slider {
    flex-grow: 1;
    accent-color: var(--evn-blue);
    cursor: pointer;
}

.gate-value {
    font-size: 12px;
    font-weight: bold;
    width: 60px;
    text-align: right;
    color: var(--evn-blue);
}

/* Generator turbine item */
.turbine-item {
    background-color: #f8fafc;
    border: 1px solid var(--border-color-light);
    border-radius: 8px;
    padding: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.turbine-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.turbine-name {
    font-weight: bold;
    font-size: 12px;
}

.turbine-flow {
    font-size: 11px;
    color: var(--text-muted);
}

.turbine-power-badge {
    background-color: var(--evn-blue-light);
    color: var(--evn-blue);
    font-weight: bold;
    font-size: 13px;
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid rgba(0, 90, 156, 0.15);
}

.turbine-power-badge.off {
    background-color: var(--border-color-light);
    color: var(--text-muted);
    border-color: transparent;
}

/* What-if simulation box */
.simulation-box {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background-color: #f8fafc;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color-light);
}

.sim-input-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
}

.sim-input-row select, .sim-input-row input {
    background-color: white;
    border: 1px solid var(--border-color);
    padding: 4px 8px;
    border-radius: 4px;
    outline: none;
    font-family: inherit;
    font-size: 12px;
    width: 140px;
}

.sim-output-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 8px;
    border-top: 1px solid var(--border-color-light);
    padding-top: 8px;
}

.sim-out-item {
    display: flex;
    flex-direction: column;
    background-color: white;
    border: 1px solid var(--border-color-light);
    padding: 6px;
    border-radius: 4px;
    align-items: center;
}

.sim-out-label {
    font-size: 9.5px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.sim-out-val {
    font-size: 13px;
    font-weight: 700;
    color: var(--evn-blue);
}

.sim-out-val.danger {
    color: var(--status-danger);
}

/* AI Recommendation Card (light blue bg) */
.ai-recommendation-card {
    background-color: #f0f7ff;
    border: 1px solid #bae6fd;
    border-radius: 10px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ai-rec-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: bold;
    font-size: 12px;
    color: #0369a1;
}

.ai-rec-header i {
    font-size: 14px;
}

.ai-rec-content {
    font-size: 11.5px;
    color: #0c4a6e;
    line-height: 1.4;
}

.btn-ai-apply {
    align-self: flex-end;
    background-color: #0284c7;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-weight: bold;
    font-size: 11px;
    cursor: pointer;
    transition: background-color 0.15s;
}

.btn-ai-apply:hover {
    background-color: #0369a1;
}

/* Alerts / Logs feed */
.alert-feed {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.alert-feed-item {
    display: flex;
    gap: 10px;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color-light);
    font-size: 11.5px;
}

.alert-feed-item.info { background-color: var(--status-info-bg); border-color: rgba(59, 130, 246, 0.15); color: #1e3a8a; }
.alert-feed-item.warning { background-color: var(--status-warning-bg); border-color: rgba(245, 158, 11, 0.15); color: #78350f; }
.alert-feed-item.danger { background-color: var(--status-danger-bg); border-color: rgba(239, 68, 68, 0.15); color: #7f1d1d; }

.alert-feed-icon {
    font-size: 14px;
    margin-top: 2px;
}

.alert-feed-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex-grow: 1;
}

.alert-feed-time {
    font-size: 9.5px;
    color: var(--text-muted);
}

.alert-feed-more {
    text-align: center;
    font-size: 11px;
    font-weight: bold;
    color: var(--evn-blue);
    text-decoration: none;
    margin-top: 4px;
}

/* Links & Footer Bottom Bar */
.bottom-bar {
    background-color: var(--bg-card);
    border-top: 2px solid var(--border-color);
    padding: 8px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    z-index: 90;
}

.quick-links {
    display: flex;
    align-items: center;
    gap: 15px;
}

.quick-links-label {
    font-weight: bold;
    color: var(--evn-blue);
}

.quick-links-list {
    display: flex;
    gap: 10px;
}

.quick-link-item {
    color: var(--text-muted);
    text-decoration: none;
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color-light);
    transition: all 0.15s;
}

.quick-link-item:hover {
    border-color: var(--evn-blue);
    color: var(--evn-blue);
}

.footer-info {
    color: var(--text-muted);
    display: flex;
    gap: 20px;
}

.footer-info span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.footer-info i {
    color: var(--evn-blue);
}

/* Customized scrollbars for SCADA */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

/* SCADA Table Styling */
.scada-table {
    width: 100%;
    border-collapse: collapse;
}

.scada-table th {
    background-color: #f8fafc;
    color: var(--text-muted);
    font-weight: 600;
    padding: 10px 14px;
    border-bottom: 2px solid var(--border-color);
    font-size: 11.5px;
    text-transform: uppercase;
}

.scada-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color-light);
    font-size: 12px;
}

.scada-table tbody tr:hover {
    background-color: #f8fafc;
}

.text-center {
    text-align: center;
}

/* Mobile & Tablet Responsive Media Queries */
@media (max-width: 1200px) {
    .kpi-row {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 1024px) {
    #sidebar-toggle {
        display: flex !important;
    }
    
    body {
        overflow-y: auto !important;
        height: auto;
    }
    
    .app-container {
        height: auto;
        min-height: 100vh;
    }
    
    .workspace {
        height: auto;
    }
    
    .sidebar {
        position: fixed;
        left: -240px;
        top: 65px;
        bottom: 0;
        z-index: 1000;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 4px 0 10px rgba(0,0,0,0.1);
    }
    
    .sidebar.sidebar-open {
        left: 0;
    }
    
    .dashboard-panel {
        padding: 10px;
        overflow-y: visible;
        height: auto;
        width: 100%;
    }
    
    .kpi-row {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    
    .inner-grid {
        grid-template-columns: 1fr;
        height: auto;
        overflow: visible;
        gap: 15px;
    }
    
    .left-column, .right-column {
        overflow-y: visible;
        height: auto;
    }
    
    .map-container-wrapper {
        height: 350px;
    }
    
    .header-center {
        display: none; /* Hide weather center panel on tablets/mobile */
    }
    
    #tab-forecast .scada-card-body {
        flex-direction: column !important;
        height: auto;
        overflow: visible;
    }
    
    #tab-forecast #chart-ai-forecast {
        height: 300px;
    }
    
    #tab-forecast div[style*="border-left"] {
        border-left: none !important;
        border-top: 1px solid var(--border-color-light);
        padding-left: 0 !important;
        padding-top: 20px;
        margin-top: 20px;
        height: auto;
        overflow: visible;
    }
}

@media (max-width: 640px) {
    .header {
        padding: 0 10px;
    }
    
    .system-title {
        font-size: 11px;
    }
    
    .system-address {
        display: none;
    }
    
    .header-right .clock-widget {
        display: none; /* Hide clock on very small displays */
    }
    
    .kpi-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .kpi-card {
        height: 90px;
        padding: 8px 10px;
    }
    
    .kpi-card-value {
        font-size: 15px;
    }
    
    .kpi-gauge-container {
        width: 50px;
        height: 50px;
    }
    
    .bottom-bar {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
        padding: 15px 10px;
    }
    
    .quick-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }
    
    .quick-links-list {
        flex-wrap: wrap;
    }
    
    .footer-info {
        flex-direction: column;
        gap: 6px;
        width: 100%;
    }
    
    #tab-reports .scada-card-header {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    #tab-reports .scada-card-header div {
        flex-direction: column;
        align-items: stretch;
    }
}