/* Modern Dark Glassmorphism Stylesheet for CarbonZero Duo */
:root {
  --bg-primary: #0a0d14;
  --bg-surface: rgba(18, 24, 38, 0.75);
  --bg-surface-hover: rgba(28, 36, 56, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 229, 153, 0.35);

  --accent-green: #00E599;
  --accent-green-dim: rgba(0, 229, 153, 0.15);
  --accent-emerald: #10B981;
  --accent-cyan: #06B6D4;
  --accent-blue: #3B82F6;
  --accent-orange: #F59E0B;
  --accent-red: #EF4444;

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

  --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 35px rgba(0, 229, 153, 0.2);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Ambient Radial Glow */
.glow-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  background: 
    radial-gradient(circle at 15% 20%, rgba(0, 229, 153, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 60%, rgba(59, 130, 246, 0.10) 0%, transparent 45%);
  z-index: 0;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  font-size: 28px;
  background: var(--accent-green-dim);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.accent-text {
  color: var(--accent-green);
}

.logo-sub {
  font-size: 12px;
  color: var(--text-secondary);
}

.header-badges {
  display: flex;
  gap: 10px;
  align-items: center;
}

.badge {
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  letter-spacing: 0.3px;
}

.badge-gitlab {
  background: rgba(226, 67, 41, 0.15);
  color: #FC6D26;
  border: 1px solid rgba(226, 67, 41, 0.3);
}

.badge-gcp {
  background: rgba(66, 133, 244, 0.15);
  color: #60A5FA;
  border: 1px solid rgba(66, 133, 244, 0.3);
}

.badge-status {
  background: var(--accent-green-dim);
  color: var(--accent-green);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  gap: 6px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Hero Section */
.hero-section {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 60px 0 40px;
}

.hero-tag {
  display: inline-block;
  background: var(--accent-green-dim);
  color: var(--accent-green);
  border: 1px solid var(--border-glow);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-heading {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-green), #38BDF8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-main);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-green), var(--accent-emerald));
  color: #032014;
  box-shadow: 0 4px 20px rgba(0, 229, 153, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 229, 153, 0.5);
}

.btn-video {
  background: linear-gradient(135deg, #3B82F6, #1D4ED8);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
}

.btn-video:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent-green);
  border: 1px solid var(--border-glow);
}

.btn-outline:hover {
  background: var(--accent-green-dim);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

/* Hero Stats Card */
.hero-stats-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(14px);
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-size: 38px;
  font-weight: 800;
  color: var(--accent-green);
  letter-spacing: -1px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

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

/* Cards & Sections */
.section {
  padding: 40px 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.section-sub {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(14px);
  border-radius: 18px;
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
}

/* Autonomous Flow Simulation Card */
.simulation-card {
  margin: 20px 0 40px;
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
  animation: slideDown 0.4s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hidden {
  display: none !important;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.flow-header-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.flow-id-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.08);
  padding: 3px 8px;
  border-radius: 6px;
  color: var(--text-secondary);
}

.btn-close {
  background: none;
  border: none;
  font-size: 26px;
  color: var(--text-secondary);
  cursor: pointer;
}

.btn-close:hover {
  color: var(--text-primary);
}

.flow-stages-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.timeline-step {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.3s ease;
}

.timeline-step.active {
  border-color: var(--accent-green);
  background: var(--accent-green-dim);
}

.timeline-step.completed {
  border-color: rgba(0, 229, 153, 0.4);
}

.timeline-step-title {
  font-size: 13px;
  font-weight: 700;
}

.timeline-step-desc {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.flow-output-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.code-box, .markdown-preview-box {
  background: #06090e;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.code-box-header {
  background: rgba(255, 255, 255, 0.04);
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.badge-mini {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
}

.badge-green {
  background: var(--accent-green-dim);
  color: var(--accent-green);
}

.code-content {
  font-family: var(--font-mono);
  font-size: 12px;
  color: #38BDF8;
  padding: 16px;
  max-height: 340px;
  overflow-y: auto;
  white-space: pre-wrap;
}

.markdown-body {
  padding: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  max-height: 340px;
  overflow-y: auto;
  line-height: 1.6;
}

.markdown-body h2, .markdown-body h3 {
  color: var(--text-primary);
  margin: 10px 0 6px;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 12px;
}

.markdown-body th, .markdown-body td {
  border: 1px solid var(--border-color);
  padding: 6px 10px;
  text-align: left;
}

/* Regional Grid Cards */
.regions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.region-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 20px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.region-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
}

.region-card.recommended {
  border-color: var(--border-glow);
  box-shadow: 0 0 25px rgba(0, 229, 153, 0.15);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.region-code {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
}

.region-loc {
  font-size: 12px;
  color: var(--text-secondary);
}

.grade-badge {
  font-size: 12px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 8px;
}

.grade-A-plus {
  background: rgba(0, 229, 153, 0.2);
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
}

.grade-A {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald);
}

.grade-B {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-orange);
}

.grade-C {
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-red);
}

.intensity-metric {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.intensity-unit {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.cfe-meter-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  margin: 12px 0 6px;
  overflow: hidden;
}

.cfe-meter-fill {
  height: 100%;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent-emerald), var(--accent-green));
}

.cfe-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-secondary);
}

/* Simulator Layout */
.simulator-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
}

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

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

.range-slider {
  width: 100%;
  accent-color: var(--accent-green);
  cursor: pointer;
}

.custom-select {
  width: 100%;
  background: #080C14;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 10px 14px;
  border-radius: 10px;
  font-family: var(--font-main);
  font-size: 14px;
}

.savings-highlight {
  background: var(--accent-green-dim);
  border: 1px solid var(--border-glow);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
  margin-bottom: 24px;
}

.savings-percent {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent-green);
  letter-spacing: -1px;
}

.savings-text {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 600;
}

.comparison-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.bar-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bar-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.bar-container {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 28px;
}

.bar {
  height: 100%;
  border-radius: 8px;
  transition: width 0.3s ease;
}

.bar-current {
  background: rgba(239, 68, 68, 0.7);
}

.bar-optimized {
  background: var(--accent-green);
  box-shadow: 0 0 15px rgba(0, 229, 153, 0.4);
}

.bar-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  min-width: 80px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.metric-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px;
  text-align: center;
}

.metric-val {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-green);
}

.metric-lbl {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* MCP Tools Grid */
.mcp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
}

.mcp-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 20px;
}

.mcp-name {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.mcp-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Architecture Card */
.arch-card {
  margin-top: 40px;
}

.arch-diagram {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  overflow-x: auto;
  padding: 20px 0;
}

.arch-step {
  flex: 1;
  min-width: 170px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 18px 14px;
  text-align: center;
}

.arch-step.highlight-step {
  border-color: var(--border-glow);
  background: var(--accent-green-dim);
}

.arch-icon {
  font-size: 26px;
  margin-bottom: 8px;
}

.arch-step-title {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 4px;
}

.arch-step p {
  font-size: 11px;
  color: var(--text-muted);
}

.arch-arrow {
  color: var(--accent-green);
  font-size: 20px;
}

/* Footer */
.footer {
  margin-top: 60px;
  border-top: 1px solid var(--border-color);
  padding: 30px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent-green);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-section {
    grid-template-columns: 1fr;
  }
  .simulator-layout {
    grid-template-columns: 1fr;
  }
  .flow-output-grid {
    grid-template-columns: 1fr;
  }
  .flow-stages-timeline {
    grid-template-columns: 1fr;
  }
}