/* EMPORes Energy Intelligence Platform - Global Light Theme Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --bg-dark: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-glass: rgba(255, 255, 255, 0.9);
  --border-color: #E2E8F0;
  --border-glow: rgba(0, 168, 89, 0.3);
  
  --primary-cyan: #0EA5E9;
  --primary-blue: #0284C7;
  --accent-green: #00A859;
  --accent-emerald: #059669;
  --accent-orange: #EA580C;
  --accent-purple: #7C3AED;

  --text-main: #0F172A;
  --text-muted: #475569;
  --text-dim: #64748B;

  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  
  --shadow-glow: 0 10px 25px -5px rgba(0, 168, 89, 0.15);
  --shadow-card: 0 10px 30px -5px rgba(15, 23, 42, 0.06);
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #EFF6FF 0%, #F8FAFC 70%);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-green) 0%, var(--primary-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-blue {
  background: linear-gradient(135deg, #0284C7 0%, #0EA5E9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(0, 168, 89, 0.08);
  border: 1px solid rgba(0, 168, 89, 0.2);
  color: var(--accent-green);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.8rem 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
  transition: var(--transition-normal);
}

.navbar .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.nav-brand img {
  height: 42px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-green);
  background: rgba(0, 168, 89, 0.06);
}

.nav-link .caret {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.nav-item:hover .caret {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 40px rgba(15,23,42,0.12);
  padding: 0.75rem;
  min-width: 270px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  list-style: none;
  z-index: 1100;
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item a {
  display: flex;
  flex-direction: column;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.dropdown-item a:hover {
  background: rgba(0, 168, 89, 0.08);
  border-left: 3px solid var(--accent-green);
}

.dropdown-item .prod-title {
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
}

.dropdown-item .prod-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* Nav CTA Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-emerald) 100%);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 168, 89, 0.3);
  transition: var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 168, 89, 0.4);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  background: #FFFFFF;
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.btn-outline:hover {
  background: rgba(0, 168, 89, 0.05);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 9.5rem 0 4.5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 168, 89, 0.08) 0%, rgba(14, 165, 233, 0.04) 50%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: #0F172A;
}

.hero p.lead {
  font-size: 1.2rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2.2rem;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

/* Infographic Display Box */
.infographic-wrapper {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-card);
  margin: 2.5rem 0;
  text-align: center;
}

.infographic-wrapper img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 15px rgba(0,0,0,0.06);
}

.infographic-caption {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.8rem;
  font-weight: 500;
}

/* Card Grids */
.section {
  padding: 4.5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 3.25rem;
}

.section-header h2 {
  font-size: 2.3rem;
  margin-bottom: 0.8rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.1);
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: rgba(0, 168, 89, 0.08);
  border: 1px solid rgba(0, 168, 89, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-green);
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Feature List */
.feature-list {
  list-style: none;
  margin-top: 1rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.6rem;
}

.feature-list li::before {
  content: '✓';
  color: var(--accent-green);
  font-weight: bold;
  flex-shrink: 0;
}

/* Comparison Table */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: #FFFFFF;
  box-shadow: var(--shadow-card);
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.custom-table th, .custom-table td {
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.custom-table th {
  background: #F1F5F9;
  font-family: var(--font-heading);
  color: var(--text-main);
  font-size: 0.95rem;
}

.custom-table tr:hover {
  background: #F8FAFC;
}

.custom-table .highlight-col {
  color: var(--accent-green);
  font-weight: 600;
}

/* Telemetry Bar */
.telemetry-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  gap: 1.5rem;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  margin: 2rem 0;
}

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

.telemetry-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.telemetry-value {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-green);
}

/* Architecture Container */
.architecture-container {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.cloud-node {
  background: linear-gradient(135deg, rgba(0, 168, 89, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
  border: 1px solid var(--accent-green);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: inline-block;
  margin-bottom: 2rem;
}

.cloud-node h3 {
  color: var(--accent-green);
  font-size: 1.5rem;
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}

.node-box {
  background: #F8FAFC;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  transition: var(--transition-fast);
}

.node-box:hover {
  border-color: var(--accent-green);
  background: rgba(0, 168, 89, 0.06);
}

/* Form Styles */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-input, .form-select, .form-textarea {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 0 3px rgba(0, 168, 89, 0.15);
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
}

/* Footer */
.footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: 5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand img {
  height: 48px;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col ul li a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--accent-green);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: #FFFFFF;
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-150%);
    transition: var(--transition-normal);
  }
  .nav-menu.active {
    transform: translateY(0);
  }
  .dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    background: #F8FAFC;
    margin-top: 0.5rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.full-width {
    grid-column: span 1;
  }
}

@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
  }
}