/* =========================================================
   HYBRID RENEWABLE ENERGY MONITORING DASHBOARD
   Stylesheet: Modern Dark/Light Energy-Tech Dashboard
   ========================================================= */

/* --- CSS ROOT VARIABLES (THEMING & DESIGN TOKENS) --- */
:root {
  /* Dark Theme (Default) */
  --bg-primary: #0B1120;
  --bg-secondary: #0F172A;
  --bg-card: #1E293B;
  --bg-card-hover: #243248;
  --bg-card-alt: #172236;
  --bg-translucent: rgba(15, 23, 42, 0.85);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-heading: #FFFFFF;

  --border-color: #334155;
  --border-light: rgba(255, 255, 255, 0.08);

  /* Renewable Accent Colors */
  --accent-solar: #F59E0B;
  --accent-solar-glow: rgba(245, 158, 11, 0.25);
  --accent-wind: #06B6D4;
  --accent-wind-glow: rgba(6, 182, 212, 0.25);
  --accent-battery: #10B981;
  --accent-battery-glow: rgba(16, 185, 129, 0.25);
  --accent-load: #EC4899;
  --accent-load-glow: rgba(236, 72, 153, 0.25);

  --primary-green: #10B981;
  --primary-blue: #0284C7;
  --accent-cyan: #38BDF8;
  --danger-red: #EF4444;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-glow-solar: 0 0 25px rgba(245, 158, 11, 0.2);
  --shadow-glow-wind: 0 0 25px rgba(6, 182, 212, 0.2);
  --shadow-glow-battery: 0 0 25px rgba(16, 185, 129, 0.2);

  /* Dimensions & Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  --nav-height: 72px;

  /* Fonts */
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Dynamic CSS variable for turbine rotation */
  --rotor-duration: 2.0s;
}

/* --- LIGHT THEME OVERRIDES --- */
[data-theme="light"] {
  --bg-primary: #F1F5F9;
  --bg-secondary: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F8FAFC;
  --bg-card-alt: #F1F5F9;
  --bg-translucent: rgba(255, 255, 255, 0.9);

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-heading: #0B1120;

  --border-color: #E2E8F0;
  --border-light: rgba(0, 0, 0, 0.06);

  --accent-solar: #D97706;
  --accent-solar-glow: rgba(217, 119, 6, 0.15);
  --accent-wind: #0284C7;
  --accent-wind-glow: rgba(2, 132, 199, 0.15);
  --accent-battery: #059669;
  --accent-battery-glow: rgba(5, 150, 105, 0.15);
  --accent-load: #DB2777;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08);
}

/* --- BASE & RESET --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all 0.2s ease;
}

code, pre {
  font-family: var(--font-mono);
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-padding {
  padding: 5rem 0;
}

.alt-bg {
  background-color: var(--bg-secondary);
}

/* --- TYPOGRAPHY & COMMON STYLES --- */
h1, h2, h3, h4 {
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.25;
}

.gradient-text {
  background: linear-gradient(135deg, #10B981, #06B6D4, #38BDF8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #10B981;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.solar-badge {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--accent-solar);
}

.wind-badge {
  background: rgba(6, 182, 212, 0.12);
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--accent-wind);
}

.battery-badge {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--accent-battery);
}

.analytics-badge {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.3);
  color: var(--accent-cyan);
}

.calc-badge {
  background: rgba(147, 51, 234, 0.12);
  border-color: rgba(147, 51, 234, 0.3);
  color: #A855F7;
}

.about-badge {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.3);
  color: #60A5FA;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10B981;
  box-shadow: 0 0 8px #10B981;
  animation: pulseAnimation 1.8s infinite;
  display: inline-block;
}

.pulse-dot.green {
  background-color: #10B981;
  box-shadow: 0 0 8px #10B981;
}

@keyframes pulseAnimation {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.98rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #10B981, #059669);
  color: #FFFFFF;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* --- GLOBAL TOP DISCLAIMER BANNER --- */
.demo-banner {
  background: linear-gradient(90deg, #1E293B, #0F172A, #1E293B);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

[data-theme="light"] .demo-banner {
  background: #E2E8F0;
  border-color: #CBD5E1;
  color: #334155;
}

.banner-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  text-align: center;
}

/* --- NAVIGATION BAR --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--bg-translucent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1240px;
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 40px;
  height: 40px;
  filter: drop-shadow(0 0 6px rgba(16, 185, 129, 0.4));
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-heading);
}

.brand-tag {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent-battery);
  letter-spacing: 0.1em;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  padding: 0.5rem 0.85rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-heading);
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
  background: rgba(0, 0, 0, 0.05);
  color: var(--primary-green);
}

.nav-link.active {
  color: #10B981;
  font-weight: 600;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  font-size: 1.15rem;
  color: var(--text-primary);
}

.icon-btn:hover {
  border-color: var(--accent-cyan);
}

/* Light / Dark Mode Toggle Icons */
[data-theme="dark"] .light-icon { display: block; }
[data-theme="dark"] .dark-icon { display: none; }
[data-theme="light"] .light-icon { display: none; }
[data-theme="light"] .dark-icon { display: block; }

.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 38px;
  height: 38px;
  padding: 9px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.hamburger-btn .bar {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* --- PAGE 1: HERO SECTION --- */
.hero-section {
  padding: 4rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.project-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-solar);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 3rem;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 600px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

/* Live Quick Ticker in Hero */
.hero-quick-stats {
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.85rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.quick-stat {
  display: flex;
  flex-direction: column;
}

.qs-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}

.qs-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-heading);
}

.qs-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  margin-top: 0.2rem;
}

.qs-badge.charging {
  background: rgba(16, 185, 129, 0.2);
  color: #10B981;
}

.qs-badge.discharging {
  background: rgba(245, 158, 11, 0.2);
  color: #F59E0B;
}

.stat-separator {
  width: 1px;
  height: 28px;
  background: var(--border-color);
}

/* Hero Visual Card (Schematic) */
.hero-diagram-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.diagram-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 1.25rem;
}

.diagram-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.diagram-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: #10B981;
  font-weight: 600;
}

/* Microgrid Topology Layout */
.microgrid-schematic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.25rem;
  position: relative;
}

.schematic-node {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  position: relative;
  transition: all 0.25s ease;
}

.schematic-node:hover {
  transform: translateY(-2px);
  border-color: var(--accent-cyan);
}

.node-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.schematic-icon {
  width: 32px;
  height: 32px;
}

.load-box {
  font-size: 1.6rem;
}

.node-info {
  display: flex;
  flex-direction: column;
}

.node-name {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.node-val {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-heading);
}

.flow-arrow {
  position: absolute;
  font-size: 0.72rem;
  font-weight: 700;
  color: #F59E0B;
}

.flow-arrow.down { bottom: -18px; left: 50%; transform: translateX(-50%); }
.flow-arrow.right { right: -18px; top: 50%; transform: translateY(-50%); }
.flow-arrow.up-down {
  right: 0.75rem;
  top: 0.75rem;
  font-size: 0.7rem;
  color: #10B981;
}

/* Controller Node (Span both columns) */
.node-controller {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.9));
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
  justify-content: center;
}

.controller-core {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.3rem;
}

.core-icon {
  width: 36px;
  height: 36px;
}

.core-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent-cyan);
}

.core-sub {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #10B981;
  font-weight: 600;
}

/* Feature Cards */
.feature-cards-wrapper {
  margin-top: 5rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}

.feature-icon-container {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  padding: 10px;
}

.solar-accent { background: rgba(245, 158, 11, 0.15); }
.wind-accent { background: rgba(6, 182, 212, 0.15); }
.battery-accent { background: rgba(16, 185, 129, 0.15); }

.feature-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.feature-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.meta-tag {
  background: var(--bg-card);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
  font-weight: 600;
}

/* --- PAGE 2: DASHBOARD & KPI GRID --- */
.section-header-flex {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

/* Simulation Toolbar */
.sim-control-panel {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
}

.sim-status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.sim-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
}

.sim-dot.paused {
  background: #F59E0B;
}

.sim-button-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sim-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.sim-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
}

/* Dropdown */
.dropdown-container {
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 260px;
  z-index: 100;
  overflow: hidden;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.65rem 1rem;
  text-align: left;
  font-size: 0.82rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-light);
}

.dropdown-item:last-child {
  border-bottom: none;
}

.dropdown-item:hover {
  background: var(--bg-card-hover);
  color: var(--accent-cyan);
}

/* KPI Cards Layout */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.kpi-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.kpi-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.kpi-card.highlight-green {
  border-color: rgba(16, 185, 129, 0.4);
  background: linear-gradient(180deg, var(--bg-secondary) 0%, rgba(16, 185, 129, 0.05) 100%);
}

.kpi-card.highlight-cyan {
  border-color: rgba(6, 182, 212, 0.4);
  background: linear-gradient(180deg, var(--bg-secondary) 0%, rgba(6, 182, 212, 0.05) 100%);
}

.kpi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}

.kpi-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
}

.kpi-icon-wrap.solar { background: rgba(245, 158, 11, 0.15); }
.kpi-icon-wrap.wind { background: rgba(6, 182, 212, 0.15); }
.kpi-icon-wrap.renewable { background: rgba(16, 185, 129, 0.15); }
.kpi-icon-wrap.load { background: rgba(236, 72, 153, 0.15); }
.kpi-icon-wrap.battery { background: rgba(16, 185, 129, 0.15); }
.kpi-icon-wrap.co2 { background: rgba(56, 189, 248, 0.15); }

.load-card-icon, .eco-leaf-icon {
  font-size: 1.25rem;
}

.kpi-status-tag {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  color: var(--text-secondary);
  text-transform: uppercase;
}

.kpi-status-tag.green {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
}

.kpi-status-tag.cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
}

.kpi-status-tag.charging {
  background: rgba(16, 185, 129, 0.2);
  color: #10B981;
}

.kpi-status-tag.discharging {
  background: rgba(245, 158, 11, 0.2);
  color: #F59E0B;
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
  display: block;
  margin-bottom: 0.35rem;
}

.kpi-value-row {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-heading);
}

.kpi-unit {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.kpi-footer {
  border-top: 1px solid var(--border-light);
  padding-top: 0.65rem;
}

.kpi-subtext {
  font-size: 0.72rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.4rem;
}

.mini-trend-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}

.bar-fill.solar { background: #F59E0B; }
.bar-fill.wind { background: #06B6D4; }
.bar-fill.green { background: #10B981; }
.bar-fill.load { background: #EC4899; }
.bar-fill.battery { background: #10B981; }
.bar-fill.cyan { background: #38BDF8; }

/* --- ENERGY FLOW ANIMATED DIAGRAM --- */
.flow-diagram-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.flow-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.flow-card-title {
  font-size: 1.35rem;
  margin-bottom: 0.25rem;
}

.flow-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.flow-legend {
  display: flex;
  gap: 1.25rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.legend-dot.solar { background: #F59E0B; }
.legend-dot.wind { background: #06B6D4; }
.legend-dot.load { background: #EC4899; }
.legend-dot.battery { background: #10B981; }

.flow-canvas-wrapper {
  width: 100%;
  position: relative;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 1rem;
  overflow: hidden;
}

.flow-svg {
  width: 100%;
  height: auto;
  min-height: 380px;
}

/* SVG Flow Styling */
.pipe-track {
  stroke: var(--border-color);
  stroke-width: 6;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.flow-line {
  stroke-width: 5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 10 8;
  animation: flowDash 1.2s linear infinite;
}

@keyframes flowDash {
  to {
    stroke-dashoffset: -36;
  }
}

.solar-flow { stroke: #F59E0B; }
.wind-flow { stroke: #06B6D4; }
.load-flow { stroke: #EC4899; }
.battery-flow-charge { stroke: #10B981; }
.battery-flow-discharge {
  stroke: #F59E0B;
  animation: flowDashReverse 1.2s linear infinite;
}

@keyframes flowDashReverse {
  to {
    stroke-dashoffset: 36;
  }
}

.node-box {
  fill: var(--bg-card);
  stroke: var(--border-color);
  stroke-width: 1.5;
  transition: all 0.3s ease;
}

.flow-node-group:hover .node-box {
  stroke: var(--accent-cyan);
}

.hub-box {
  fill: var(--bg-card);
  stroke: var(--accent-cyan);
  stroke-width: 2.5;
}

.hub-inner-circle {
  fill: rgba(6, 182, 212, 0.1);
  stroke: var(--accent-cyan);
  stroke-width: 1.5;
}

.node-title {
  fill: var(--text-secondary);
  font-size: 11px;
  font-family: var(--font-main);
  font-weight: 700;
  text-anchor: middle;
  letter-spacing: 0.05em;
}

.node-power {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 800;
  text-anchor: middle;
}

.solar-text { fill: #F59E0B; }
.wind-text { fill: #06B6D4; }
.load-text { fill: #EC4899; }
.bat-text { fill: #10B981; }

.hub-title {
  fill: var(--text-primary);
  font-size: 11px;
  font-family: var(--font-main);
  font-weight: 800;
  text-anchor: middle;
  letter-spacing: 0.08em;
}

.hub-status-text {
  fill: #10B981;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
}

.pipe-label-bg {
  fill: var(--bg-secondary);
  stroke: var(--border-color);
  stroke-width: 1;
}

.pipe-label-text {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-anchor: middle;
}

/* Banner Alert under Flow */
.flow-logic-banner {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  background: rgba(16, 185, 129, 0.1);
  border-left: 4px solid #10B981;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.92rem;
  transition: all 0.3s ease;
}

.flow-logic-banner.discharge-mode {
  background: rgba(245, 158, 11, 0.1);
  border-left-color: #F59E0B;
}

.flow-logic-banner.deficit-mode {
  background: rgba(239, 68, 68, 0.1);
  border-left-color: #EF4444;
}

.logic-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.logic-content strong {
  color: var(--text-heading);
}

.logic-content span {
  color: var(--text-secondary);
}

/* --- COMMON 2-COLUMN SECTION GRID --- */
.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: flex-start;
}

.tech-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.tech-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 1rem;
}

.card-heading {
  font-size: 1.25rem;
  font-weight: 700;
}

.live-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-solar);
}

.live-tag.cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-wind);
}

.live-tag.green {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
}

/* Measurement 6-Tile Grid */
.measurement-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.measure-tile {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
}

.measure-tile.highlight-solar {
  border-color: rgba(245, 158, 11, 0.5);
  background: rgba(245, 158, 11, 0.06);
}

.measure-tile.highlight-wind {
  border-color: rgba(6, 182, 212, 0.5);
  background: rgba(6, 182, 212, 0.06);
}

.measure-tile.highlight-green {
  border-color: rgba(16, 185, 129, 0.5);
  background: rgba(16, 185, 129, 0.06);
}

.m-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.m-val-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-bottom: 0.25rem;
}

.m-val {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading);
}

.m-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.m-hint {
  font-size: 0.68rem;
  color: var(--text-muted);
}

.text-green { color: #10B981 !important; }
.text-solar { color: #F59E0B !important; }
.text-wind { color: #06B6D4 !important; }
.text-rose { color: #EC4899 !important; }
.text-highlight { color: #10B981 !important; font-weight: 800; }

/* Engineering Concept Card */
.concept-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.concept-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.concept-icon {
  font-size: 1.4rem;
}

.concept-header h4 {
  font-size: 1.1rem;
}

.formula-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.formula-box code {
  font-size: 1.15rem;
  color: var(--accent-cyan);
  font-weight: 700;
  display: block;
  margin-bottom: 0.4rem;
}

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

.concept-bullet-list p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
  line-height: 1.5;
}

.concept-bullet-list p strong {
  color: var(--text-primary);
}

/* Charts Containers */
.chart-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.chart-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.chart-subheading {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.time-range-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-solar);
}

.time-range-badge.cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-wind);
}

.time-range-badge.green {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
}

.chart-wrapper {
  position: relative;
  width: 100%;
  height: 320px;
  margin-bottom: 1.5rem;
}

/* Solar Panel Visual Holder */
.panel-visual-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.panel-svg-holder {
  width: 90px;
  height: 90px;
  flex-shrink: 0;
}

.panel-visual-details h4 {
  font-size: 0.98rem;
  margin-bottom: 0.5rem;
}

.panel-visual-details ul {
  list-style: none;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.panel-visual-details li {
  margin-bottom: 0.25rem;
}

/* Sample Table */
.sample-data-table-wrap {
  overflow-x: auto;
}

.sample-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  text-align: center;
}

.sample-table th, .sample-table td {
  padding: 0.6rem 0.5rem;
  border: 1px solid var(--border-color);
}

.sample-table th {
  background: var(--bg-card);
  color: var(--text-secondary);
}

.sample-table td {
  color: var(--text-heading);
  font-family: var(--font-mono);
}

/* --- PAGE 4: WIND TURBINE ANIMATION --- */
.wind-turbine-stage {
  position: relative;
  height: 240px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.wind-gust-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.gust {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.6), transparent);
  border-radius: 2px;
  animation: windGust 3s infinite linear;
}

.gust-1 { top: 25%; width: 140px; animation-duration: 2.2s; }
.gust-2 { top: 55%; width: 220px; animation-duration: 3.5s; animation-delay: 0.8s; }
.gust-3 { top: 80%; width: 180px; animation-duration: 2.7s; animation-delay: 1.4s; }

@keyframes windGust {
  0% { transform: translateX(-150px); opacity: 0; }
  50% { opacity: 0.8; }
  100% { transform: translateX(450px); opacity: 0; }
}

.turbine-assembly {
  position: relative;
  width: 120px;
  height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.rotor-blades-hub {
  position: absolute;
  top: 15px;
  width: 110px;
  height: 110px;
  animation: spinTurbine var(--rotor-duration) linear infinite;
  transform-origin: center center;
  z-index: 10;
}

@keyframes spinTurbine {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.blade {
  position: absolute;
  left: 51px;
  bottom: 55px;
  width: 8px;
  height: 50px;
  background: linear-gradient(180deg, #38BDF8, #0284C7);
  border-radius: 4px 4px 1px 1px;
  transform-origin: bottom center;
}

.blade-1 { transform: rotate(0deg); }
.blade-2 { transform: rotate(120deg); }
.blade-3 { transform: rotate(240deg); }

.hub-cap {
  position: absolute;
  left: 49px;
  top: 49px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 0 6px #38BDF8;
}

.turbine-nacelle {
  position: absolute;
  top: 60px;
  width: 32px;
  height: 14px;
  background: #CBD5E1;
  border-radius: 8px;
  border: 1px solid #94A3B8;
  z-index: 5;
}

.turbine-tower {
  position: absolute;
  top: 70px;
  width: 10px;
  height: 95px;
  background: linear-gradient(90deg, #94A3B8, #F1F5F9, #64748B);
  z-index: 2;
}

.turbine-base {
  position: absolute;
  bottom: 0;
  width: 44px;
  height: 8px;
  background: #475569;
  border-radius: 4px;
  z-index: 1;
}

.turbine-dynamic-tag {
  position: absolute;
  right: 1.25rem;
  top: 1.25rem;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--accent-wind);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.turbine-dynamic-tag span {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-wind);
  font-size: 0.95rem;
}

.turbine-dynamic-tag small {
  font-size: 0.68rem;
  color: #10B981;
}

.chart-annotation-card {
  display: flex;
  gap: 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.annotation-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.annotation-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- PAGE 5: BATTERY VISUALIZATION --- */
.battery-stage {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

/* Battery Cell Graphics */
.battery-cell-enclosure {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 140px;
}

.battery-terminal-top {
  width: 40px;
  height: 12px;
  background: #64748B;
  border-radius: 4px 4px 0 0;
  border: 1px solid #94A3B8;
}

.battery-inner-chassis {
  width: 140px;
  height: 200px;
  background: #0B1120;
  border: 3px solid #10B981;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow-battery);
}

.battery-liquid-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(180deg, #34D399, #10B981, #059669);
  transition: height 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.battery-soc-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.soc-large-number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 800;
  color: #FFFFFF;
}

.soc-status-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #D1FAE5;
}

/* Radial Gauge */
.battery-radial-stats {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.radial-gauge-container {
  position: relative;
  width: 120px;
  height: 120px;
}

.radial-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.radial-bg-track {
  fill: none;
  stroke: var(--border-color);
  stroke-width: 10;
}

.radial-fill-track {
  fill: none;
  stroke: #10B981;
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease;
}

.radial-inner-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.radial-pct {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-heading);
}

.radial-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 700;
}

.soc-limits-legend {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.limit-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.limit-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.limit-dot.red { background: #EF4444; }
.limit-dot.green { background: #10B981; }
.limit-dot.cyan { background: #06B6D4; }

.logic-code-snippet {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  overflow-x: auto;
}

.logic-code-snippet code {
  font-size: 0.82rem;
  color: #38BDF8;
  line-height: 1.6;
}

.battery-safety-notes {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.safety-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.safety-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(239, 68, 68, 0.15);
  color: #EF4444;
  margin-bottom: 0.4rem;
}

.safety-badge.green {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
}

.safety-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- PAGE 6: ANALYTICS --- */
.analytics-charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.summary-stats-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.summary-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.calc-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
}

.summary-stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.25rem;
}

.summary-stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
}

.summary-stat-box.highlight-box {
  border-color: rgba(16, 185, 129, 0.5);
  background: rgba(16, 185, 129, 0.08);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 0.25rem;
}

.stat-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* --- PAGE 7: ENERGY CALCULATOR --- */
.calc-layout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: flex-start;
}

.reset-link-btn {
  font-size: 0.82rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.reset-link-btn:hover {
  text-decoration: underline;
}

.calc-form {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.calc-group {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.calc-group-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.input-field {
  margin-bottom: 1.25rem;
}

.input-field:last-child {
  margin-bottom: 0;
}

.label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.input-val-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
  background: var(--bg-secondary);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.range-slider {
  width: 100%;
  height: 6px;
  border-radius: 4px;
  background: var(--border-color);
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #10B981;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
  transition: transform 0.15s ease;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.field-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  display: block;
  margin-top: 0.35rem;
}

/* Calc Results Grid */
.calc-result-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.result-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  gap: 0.85rem;
  align-items: center;
}

.result-card.solar-border { border-left: 4px solid var(--accent-solar); }
.result-card.wind-border { border-left: 4px solid var(--accent-wind); }
.result-card.total-border { border-left: 4px solid #10B981; }
.result-card.contrib-border { border-left: 4px solid #8B5CF6; }

.res-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.res-info {
  display: flex;
  flex-direction: column;
}

.res-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.res-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-heading);
}

.res-formula {
  font-size: 0.68rem;
  color: var(--text-muted);
}

/* Status Alert Box */
.calc-status-box {
  padding: 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  border: 1px solid transparent;
  transition: all 0.3s ease;
}

.calc-status-box.success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.4);
}

.calc-status-box.warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.4);
}

.calc-status-box.danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.4);
}

.status-box-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.status-box-icon {
  font-size: 1.3rem;
}

.status-box-header h4 {
  font-size: 1.05rem;
}

.calc-status-box p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.calc-disclaimer {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.85rem 1rem;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.disclaimer-icon {
  font-size: 1rem;
}

/* --- PAGE 8: ABOUT PROJECT --- */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
}

.about-block {
  margin-bottom: 1.5rem;
}

.about-block h4 {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-title-highlight {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-heading);
}

.about-features-list {
  list-style: none;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.about-features-list li {
  margin-bottom: 0.65rem;
  line-height: 1.5;
}

.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tech-pill {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.about-notice-box {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(245, 158, 11, 0.08);
  border-left: 4px solid var(--accent-solar);
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.about-notice-box strong {
  color: var(--accent-solar);
}

/* EEE Architecture Flow Diagram */
.eee-block-diagram {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 1.5rem 0;
}

.diagram-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.diagram-out-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--border-color);
  position: relative;
}

.diagram-down-arrow {
  position: absolute;
  top: -14px;
  right: 18%;
  color: var(--accent-cyan);
  font-size: 0.9rem;
}

.diagram-conn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: -0.1em;
}

.block-box {
  flex: 1;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.block-box span {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-heading);
}

.block-box small {
  font-size: 0.68rem;
  color: var(--text-muted);
}

.solar-bg { border-left: 3px solid #F59E0B; }
.wind-bg { border-left: 3px solid #06B6D4; }
.battery-bg { border-left: 3px solid #10B981; }
.inv-bg { border-left: 3px solid #38BDF8; }
.load-bg { border-left: 3px solid #EC4899; }
.bus-bg {
  background: rgba(6, 182, 212, 0.08);
  border-color: rgba(6, 182, 212, 0.4);
}

.viva-quick-reference {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.viva-quick-reference h4 {
  font-size: 0.92rem;
  color: #10B981;
  margin-bottom: 0.5rem;
}

.viva-quick-reference p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- SITE FOOTER --- */
.site-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.footer-logo {
  width: 36px;
  height: 36px;
}

.footer-title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-heading);
  display: block;
}

.footer-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: #10B981;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- MOBILE BACKDROP OVERLAY & SCROLL HINTS --- */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

body.menu-locked {
  overflow: hidden;
}

.mobile-scroll-hint {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  margin-bottom: 0.85rem;
  background: rgba(6, 182, 212, 0.12);
  border: 1px dashed var(--accent-wind);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-wind);
  text-align: center;
}

/* =========================================================
   COMPREHENSIVE RESPONSIVE DESIGN (ALL DEVICES)
   Tier 1: Extra Large Desktops (> 1400px)
   Tier 2: Standard Laptops & Desktops (1024px - 1399px)
   Tier 3: Tablets in Landscape & Small Laptops (880px - 1023px)
   Tier 4: Tablets in Portrait (768px - 879px)
   Tier 5: Large Phablets & Mobile Landscape (540px - 767px)
   Tier 6: Compact Mobile Devices (320px - 539px)
   ========================================================= */

/* --- TIER 1: EXTRA LARGE SCREENS (> 1400px) --- */
@media (min-width: 1400px) {
  .container {
    max-width: 1360px;
  }
  .hero-title {
    font-size: 3.4rem;
  }
  .kpi-value {
    font-size: 1.85rem;
  }
}

/* --- TIER 2: STANDARD LAPTOPS (1024px - 1280px) --- */
@media (max-width: 1280px) {
  .kpi-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.1rem;
  }
  .summary-stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.1rem;
  }
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2.5rem;
  }
}

/* --- TIER 3 & 4: TABLETS (768px - 1023px) --- */
@media (max-width: 1023px) {
  :root {
    --nav-height: 68px;
  }

  .section-padding {
    padding: 4rem 0;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-quick-stats {
    display: flex;
    justify-content: center;
    margin: 0 auto;
  }

  .hero-visual {
    max-width: 640px;
    margin: 0 auto;
    width: 100%;
  }

  .two-col-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .analytics-charts-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .calc-layout-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .eee-block-diagram {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.75rem;
  }

  .diagram-row, .diagram-out-row {
    min-width: 580px;
  }
}

/* --- TIER 4 & 5: MOBILE MENU ACTIVATION (< 860px) --- */
@media (max-width: 860px) {
  .hamburger-btn {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 2px solid var(--accent-cyan);
    padding: 1.5rem;
    transform: translateY(-160%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    max-height: calc(100vh - var(--nav-height));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
  }

  .nav-link {
    display: flex;
    align-items: center;
    padding: 0.85rem 1.25rem;
    font-size: 1.05rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    min-height: 48px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .chart-wrapper {
    height: 280px;
  }

  .mobile-scroll-hint {
    display: flex;
  }

  .flow-canvas-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 0.75rem;
  }

  .flow-svg {
    min-width: 680px;
    height: 380px;
  }

  .battery-stage {
    flex-direction: column;
    gap: 2rem;
  }
}

/* --- TIER 5: COMPACT TABLETS & PHABLETS (540px - 767px) --- */
@media (max-width: 767px) {
  .section-title {
    font-size: 1.85rem;
  }

  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .summary-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .measurement-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
  }

  .calc-result-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
  }

  .flow-legend {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
}

/* --- TIER 6: MOBILE PHONES (320px - 539px) --- */
@media (max-width: 539px) {
  :root {
    --nav-height: 64px;
  }

  .container {
    padding: 0 1rem;
  }

  .section-padding {
    padding: 3rem 0;
  }

  .brand-title {
    font-size: 1rem;
  }

  .brand-tag {
    font-size: 0.6rem;
  }

  .brand-logo {
    width: 32px;
    height: 32px;
  }

  .hero-title {
    font-size: 1.95rem;
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .hero-cta-group {
    flex-direction: column;
    gap: 0.85rem;
  }

  .hero-cta-group .btn {
    width: 100%;
    min-height: 48px;
  }

  .hero-quick-stats {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.85rem;
    padding: 1rem;
  }

  .stat-separator {
    display: none;
  }

  .quick-stat {
    align-items: center;
    text-align: center;
  }

  .microgrid-schematic {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .schematic-node {
    padding: 0.75rem;
  }

  .schematic-node.node-controller {
    grid-column: span 1;
  }

  .flow-arrow.right {
    display: none;
  }

  .flow-arrow.down {
    bottom: -14px;
  }

  /* Section Header Flex & Simulation Toolbar */
  .section-header-flex {
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
  }

  .sim-control-panel {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    padding: 0.85rem;
  }

  .sim-status-indicator {
    justify-content: center;
  }

  .sim-button-group {
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: 0.4rem;
  }

  .sim-btn {
    justify-content: center;
    padding: 0.6rem 0.5rem;
    min-height: 44px;
  }

  .dropdown-menu {
    right: auto;
    left: 0;
    width: 100%;
    min-width: 260px;
  }

  /* KPI Grid */
  .kpi-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .kpi-card {
    padding: 1rem 0.85rem;
  }

  .kpi-value {
    font-size: 1.35rem;
  }

  .kpi-label {
    font-size: 0.75rem;
  }

  .kpi-subtext {
    font-size: 0.68rem;
  }

  /* Measurement Grid in Solar, Wind, Battery */
  .measurement-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
  }

  .measure-tile {
    padding: 0.75rem;
  }

  .m-val {
    font-size: 1.15rem;
  }

  .panel-visual-card {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .chart-wrapper {
    height: 240px;
  }

  .chart-card {
    padding: 1.25rem 1rem;
  }

  .tech-card {
    padding: 1.25rem 1rem;
  }

  /* Battery Stage */
  .battery-stage {
    padding: 1.25rem 0.75rem;
  }

  .battery-inner-chassis {
    width: 120px;
    height: 170px;
  }

  .soc-large-number {
    font-size: 1.85rem;
  }

  .radial-gauge-container {
    width: 100px;
    height: 100px;
  }

  .radial-pct {
    font-size: 1.15rem;
  }

  /* Summary Stats in Analytics */
  .summary-stats-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .summary-stat-box {
    padding: 1rem;
  }

  /* Calculator */
  .calc-result-cards {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .range-slider::-webkit-slider-thumb {
    width: 22px;
    height: 22px;
  }

  /* Footer */
  .footer-links {
    flex-direction: column;
    gap: 0.75rem;
  }
}

/* --- TIER 7: ULTRA-COMPACT SMARTPHONES (< 360px) --- */
@media (max-width: 359px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }
  .measurement-grid {
    grid-template-columns: 1fr;
  }
  .hero-quick-stats {
    grid-template-columns: 1fr;
  }
}


/* =========================================================
   TIER 8: UNIVERSAL RESPONSIVE HARDENING LAYER
   Added last so it overrides earlier rules where needed.
   Covers: fluid typography, overflow safety, notched phones,
   landscape phones, touch devices, foldables, reduced motion,
   high-DPI text scaling and print.
   ========================================================= */

/* --- 8.1 Root behaviour: no iOS text inflation, smooth scroll offset --- */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--nav-height) + 1rem);
}

/* Anchored sections never hide under the fixed navbar */
section[id] {
  scroll-margin-top: calc(var(--nav-height) + 0.75rem);
}

/* --- 8.2 Overflow safety net ---------------------------------------
   Grid/flex children default to min-width:auto, which lets long
   monospace readouts (e.g. "1,284.55 kWh") blow the layout wider than
   the screen. Forcing min-width:0 is the single most effective fix for
   horizontal scrolling on small phones. */
.kpi-grid > *,
.measurement-grid > *,
.summary-stats-grid > *,
.calc-result-cards > *,
.feature-grid > *,
.hero-grid > *,
.two-col-grid > *,
.about-grid > *,
.calc-layout-grid > *,
.analytics-charts-grid > *,
.microgrid-schematic > *,
.footer-content > * {
  min-width: 0;
}

/* Long numbers / labels wrap instead of pushing the box */
.kpi-value, .m-val, .qs-value, .node-val, .calc-res-value,
.summary-stat-value, .soc-large-number {
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* Media never exceeds its container */
img, svg, canvas, video, iframe {
  max-width: 100%;
}

/* Anything inherently wide scrolls inside itself, not the page */
.sample-data-table-wrap,
.logic-code-snippet,
.eee-block-diagram,
.flow-canvas-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

/* --- 8.3 Fluid typography (scales smoothly between breakpoints) ----- */
.hero-title {
  font-size: clamp(1.9rem, 5.2vw + 0.4rem, 3.4rem);
  line-height: 1.15;
}

.hero-subtitle {
  font-size: clamp(0.95rem, 1.1vw + 0.72rem, 1.15rem);
}

.section-title {
  font-size: clamp(1.6rem, 3vw + 0.55rem, 2.4rem);
}

.section-subtitle {
  font-size: clamp(0.9rem, 0.8vw + 0.72rem, 1.05rem);
}

.card-heading {
  font-size: clamp(1.05rem, 1.2vw + 0.8rem, 1.3rem);
}

/* Fluid horizontal gutters instead of hard steps */
.container {
  padding-left: clamp(0.9rem, 3vw, 1.5rem);
  padding-right: clamp(0.9rem, 3vw, 1.5rem);
  width: 100%;
}

/* --- 8.4 Notched / rounded-corner phones (iPhone X+, Android cutouts) */
.navbar,
.nav-menu,
.demo-banner,
.site-footer {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.site-footer {
  padding-bottom: calc(1.5rem + env(safe-area-inset-bottom));
}

/* --- 8.5 Mobile menu height uses dynamic viewport units ------------
   100vh is wrong on mobile browsers whose URL bar collapses; dvh fixes
   it, with a vh fallback for older browsers. */
@media (max-width: 860px) {
  .nav-menu {
    max-height: calc(100vh - var(--nav-height));
    max-height: calc((var(--app-vh, 1vh) * 100) - var(--nav-height));
    max-height: calc(100dvh - var(--nav-height));
    padding-bottom: calc(1.5rem + env(safe-area-inset-bottom));
  }
}

/* --- 8.6 Landscape phones / very short viewports -------------------- */
@media (max-height: 520px) and (orientation: landscape) {
  :root { --nav-height: 56px; }

  .hero-section {
    padding-top: 1.5rem;
    padding-bottom: 2rem;
  }

  .section-padding {
    padding: 2.25rem 0;
  }

  .hero-title { font-size: clamp(1.6rem, 4vw, 2.2rem); }

  .chart-wrapper { height: 220px; }

  .battery-inner-chassis { width: 100px; height: 140px; }

  .wind-turbine-stage { height: 190px; }

  .nav-menu { padding: 0.9rem; }

  .nav-link { min-height: 40px; padding: 0.5rem 1rem; }
}

/* Keep the hero diagram usable when a landscape phone is very wide */
@media (max-height: 520px) and (orientation: landscape) and (min-width: 700px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: center;
  }
  .hero-content { text-align: left; }
  .hero-cta-group { justify-content: flex-start; }
}

/* --- 8.7 Touch devices: real 44px+ targets, no sticky hover --------- */
@media (pointer: coarse) {
  .icon-btn,
  .hamburger-btn,
  .sim-btn,
  .dropdown-toggle,
  .btn {
    min-width: 44px;
    min-height: 44px;
  }

  .nav-link,
  .footer-links a,
  .dropdown-item {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  /* Slider thumbs large enough for a fingertip */
  .range-slider {
    height: 8px;
    padding: 0.75rem 0;
    background-clip: content-box;
  }
  .range-slider::-webkit-slider-thumb {
    width: 26px;
    height: 26px;
  }
  .range-slider::-moz-range-thumb {
    width: 26px;
    height: 26px;
  }
}

@media (hover: none) {
  /* Hover-only transforms stay stuck after a tap on touchscreens */
  .kpi-card:hover,
  .tech-card:hover,
  .feature-card:hover,
  .measure-tile:hover,
  .summary-stat-box:hover {
    transform: none;
  }
  .range-slider::-webkit-slider-thumb:hover {
    transform: none;
  }
}

/* --- 8.8 Mid-size gap: large phones & small tablets (540-767px) ----- */
@media (min-width: 540px) and (max-width: 767px) {
  .hero-quick-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  .stat-separator { display: none; }

  .microgrid-schematic {
    grid-template-columns: 1fr 1fr;
  }

  .sim-button-group {
    display: flex;
    flex-wrap: wrap;
  }

  .footer-content {
    text-align: center;
  }
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* --- 8.9 Tablet portrait polish (768-1023px) ----------------------- */
@media (min-width: 768px) and (max-width: 1023px) {
  .kpi-grid { grid-template-columns: repeat(3, 1fr); }
  .summary-stats-grid { grid-template-columns: repeat(3, 1fr); }
  .calc-result-cards { grid-template-columns: repeat(2, 1fr); }
  .chart-wrapper { height: 300px; }
}

/* --- 8.10 Large tablets in landscape / small laptops --------------- */
@media (min-width: 1024px) and (max-width: 1199px) {
  .kpi-grid { grid-template-columns: repeat(3, 1fr); }
  .measurement-grid { grid-template-columns: repeat(3, 1fr); }
}

/* --- 8.11 Ultra-wide monitors & foldables unfolded ------------------ */
@media (min-width: 1800px) {
  .container { max-width: 1560px; }
  .chart-wrapper { height: 360px; }
  .hero-title { font-size: 3.6rem; }
}

/* Narrow foldable outer screens (Galaxy Fold ~280px) */
@media (max-width: 320px) {
  .container { padding-left: 0.75rem; padding-right: 0.75rem; }
  .brand-text { display: none; }
  .sim-button-group { grid-template-columns: 1fr; }
  .tech-pills { gap: 0.4rem; }
  .tech-pill { font-size: 0.68rem; }
  .chart-wrapper { height: 210px; }
}

/* --- 8.12 Users who asked for less motion -------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .spin-slow,
  .turbine-blades,
  .pulse-dot,
  .wind-gust {
    animation: none !important;
  }
}

/* --- 8.13 Print / PDF export for the report ------------------------ */
@media print {
  .navbar,
  .nav-overlay,
  .hamburger-btn,
  .sim-control-panel,
  .mobile-scroll-hint,
  .hero-cta-group,
  .site-footer .footer-links {
    display: none !important;
  }
  body { background: #fff; color: #000; }
  .section-padding { padding: 1rem 0; page-break-inside: avoid; }
  .tech-card, .chart-card, .kpi-card { break-inside: avoid; border: 1px solid #ccc; }
}