:root {
    /* Color Palette - Modern Dim / Graphite & Teal (Light Dark) */
    --bg-base: #111827; /* Gray 900 (Graphite) */
    --bg-surface: #1F2937; /* Gray 800 (Rich Slate) */
    --bg-panel: #374151; /* Gray 700 */
    
    --primary-teal: #14B8A6; /* Teal 500 (Cyber Teal) */
    --accent-teal: #5EEAD4; /* Teal 300 */
    
    --text-main: #F9FAFB; /* Gray 50 (Pearl White) */
    --text-muted: #9CA3AF; /* Gray 400 (Muted Silver) */
    
    --success: #10B981; /* Emerald 500 */
    --danger: #EF4444; /* Red 500 */
    
    --border-light: rgba(249, 250, 251, 0.1); /* Subtle light border */
    --border-highlight: rgba(20, 184, 166, 0.4);
    
    --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-accent: 0 0 15px rgba(20, 184, 166, 0.2);

    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-teal) var(--bg-base);
}

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    /* Subtle dark grid background */
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 30px 30px;
}

/* Glassmorphism Utilities - Less blur, more solid professional look */
.glass-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    box-shadow: var(--shadow-base);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

/* Base Buttons */
.btn {
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: 4px;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
}

.primary-btn {
    background: var(--primary-teal);
    color: #fff;
    padding: 0.8rem 1.2rem;
    box-shadow: 0 4px 10px rgba(20, 184, 166, 0.2);
}
.primary-btn:hover {
    background: #0D9488;
    box-shadow: 0 6px 15px rgba(20, 184, 166, 0.4);
    transform: translateY(-1px);
}

.toggle-btn {
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    color: var(--text-muted);
    padding: 0.4rem 1rem;
}
.toggle-btn:hover {
    color: var(--text-main);
    background: #475569;
}
.toggle-btn.active {
    background: var(--primary-teal);
    border-color: var(--primary-teal);
    color: #fff;
}

.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-auto { margin-top: auto; }

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

/* Sidebar */
.sidebar {
    width: 280px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: sticky;
    top: 0;
    height: 100vh;
    border-radius: 0;
    border-top: none;
    border-bottom: none;
    border-left: none;
    background: #0B1121; /* Slightly darker than base for depth */
    border-right: 1px solid var(--border-light);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-light);
}

.brand h2 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    color: var(--text-main);
    text-transform: uppercase;
}

.brand-subtitle {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: -1rem;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.nav-links li a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.8rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.nav-links li a i {
    width: 20px;
    font-size: 1rem;
    opacity: 0.7;
    transition: transform 0.3s ease;
    text-align: center;
}

.nav-links li a:hover {
    color: var(--primary-teal);
    background: rgba(20, 184, 166, 0.05);
    transform: translateX(4px);
}

.nav-links li a:hover i {
    transform: scale(1.1);
    opacity: 1;
}

.nav-links li.active a {
    color: #fff;
    background: rgba(20, 184, 166, 0.1);
    box-shadow: inset 3px 0 0 var(--primary-teal);
}

.nav-links li.active a i {
    color: var(--primary-teal);
    opacity: 1;
}

/* Main Content */
.content {
    flex: 1;
    padding: 2rem 3rem;
    max-width: 1400px;
}

.topbar {
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 1.5rem;
}

.topbar h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.topbar .subtitle {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* Live Tracker */
.live-tracker {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    border-top: 3px solid var(--primary-teal);
    background: linear-gradient(180deg, rgba(20, 184, 166, 0.05) 0%, var(--bg-surface) 100%);
}

.live-header {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-teal);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.live-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background-color: var(--primary-teal);
    animation: blink 1s infinite alternate;
}

@keyframes blink {
    from { opacity: 1; }
    to { opacity: 0.3; }
}

.live-counter {
    font-family: 'Courier New', Courier, monospace;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1;
}

.live-counter .unit {
    font-size: 0.9rem;
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--text-muted);
}

.live-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* KPI Dashboards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.kpi-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.kpi-accent {
    border: 1px solid var(--primary-teal);
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.1), var(--bg-surface));
}

.kpi-title {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-value {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.2;
}

.kpi-trend {
    font-size: 0.85rem;
    font-weight: 500;
}

.kpi-trend.good { color: var(--success); }
.kpi-trend.bad { color: var(--danger); }

/* Charts Area */
.charts-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.info-badge {
    background: rgba(20, 184, 166, 0.1);
    color: var(--primary-teal);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid rgba(20, 184, 166, 0.2);
}

.span-full {
    grid-column: 1 / -1;
}

.chart-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.card-header {
    margin-bottom: 1.2rem;
}

.card-header h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
}

#energy-matrix-header h3 {
    color: var(--primary-teal);
}
#energy-matrix-header .card-desc {
    color: var(--primary-teal);
    opacity: 0.8;
}

.scenario-toggles {
    display: flex;
    gap: 0.5rem;
}

.chart-container {
    position: relative;
    height: 320px;
    width: 100%;
}

/* Leaflet Overrides for Modern Dim */
.leaflet-container {
    background: #020617 !important;
    font-family: var(--font-body) !important;
}
.leaflet-popup-content-wrapper, .leaflet-popup-tip {
    background: var(--bg-surface) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-light);
    border-radius: 4px;
}

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

.live-tracker, .kpi-card, .chart-card {
    animation: fadeIn 0.4s ease-out forwards;
    opacity: 0;
}
.live-tracker { animation-delay: 0.1s; }
.kpi-card:nth-child(1) { animation-delay: 0.15s; }
.kpi-card:nth-child(2) { animation-delay: 0.2s; }
.kpi-card:nth-child(3) { animation-delay: 0.25s; }
.map-wrapper { animation: fadeIn 0.4s ease-out forwards; opacity: 0; animation-delay: 0.3s; }
.chart-card:nth-child(1) { animation-delay: 0.35s; }

/* Responsive */
@media (max-width: 1024px) {
    .charts-wrapper { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .app-container { flex-direction: column; }
    .sidebar { width: 100%; height: auto; position: relative; gap: 1rem; padding: 1rem; }
    .nav-links { flex-direction: row; flex-wrap: wrap; }
    .kpi-grid { grid-template-columns: 1fr; }
    .content { padding: 1rem; }
}