/**
 * CARPERO™ - Master Design System Stylesheet
 * Engineered with High-Converting Landing Page Architecture
 * Version: 2.5 (Direct-Response CRO Edition)
 * Domain: carpero.com
 */

@import url('./brand-tokens.css');

/* ==========================================================================
   1. Base Reset & 8pt Spacing Scale
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* 8pt Grid Rhythm */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;
  --space-16: 128px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--carpero-bg-abyss);
  color: var(--carpero-text-primary);
  font-family: var(--carpero-font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Atmosphere Glows */
body::before {
  content: '';
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 245, 155, 0.08) 0%, rgba(0, 210, 255, 0.04) 50%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-3);
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   2. Typography Scale & Hierarchy
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--carpero-font-display);
  color: var(--carpero-text-primary);
  line-height: 1.15;
  letter-spacing: -0.025em;
  font-weight: 800;
}

p {
  color: var(--carpero-text-secondary);
}

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

/* ==========================================================================
   3. Buttons & Contextual Narrative CTAs
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--carpero-font-display);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.875rem 1.75rem;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  white-space: nowrap;
  min-height: 48px;
}

.btn-primary {
  background: var(--carpero-gradient-brand);
  color: var(--carpero-text-inverse);
  box-shadow: 0 0 24px rgba(0, 245, 155, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(0, 210, 255, 0.45);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--carpero-border);
  color: var(--carpero-text-primary);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--carpero-border-hover);
  color: var(--carpero-emerald);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.55rem 1.15rem;
  font-size: 0.85rem;
  border-radius: 8px;
  min-height: 38px;
}

.btn-lg {
  padding: 1.1rem 2.25rem;
  font-size: 1.05rem;
  border-radius: 14px;
  min-height: 54px;
}

.btn-full {
  width: 100%;
}

/* 1-Line Friction Reducers */
.friction-reducer-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  font-size: 0.8rem;
  color: var(--carpero-text-muted);
  font-weight: 600;
  margin-top: 0.5rem;
}

.friction-reducer-line span:not(:nth-child(2n)) {
  color: var(--carpero-text-secondary);
}

/* Badges & Pills */
.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: var(--carpero-emerald-soft);
  border: 1px solid rgba(0, 245, 155, 0.3);
  color: var(--carpero-emerald);
  font-size: 0.825rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-cyan {
  background: var(--carpero-cyan-soft);
  border: 1px solid rgba(0, 210, 255, 0.3);
  color: var(--carpero-cyan);
}

.badge-amber {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--carpero-status-leaking);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--carpero-emerald);
  box-shadow: 0 0 10px var(--carpero-emerald);
  animation: pulse-ring 1.8s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 245, 155, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 245, 155, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 245, 155, 0); }
}

/* Section Header Utility */
.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto var(--space-6);
}

.section-header .subtitle {
  font-size: 1.125rem;
  color: var(--carpero-text-secondary);
  margin-top: 0.85rem;
  line-height: 1.6;
}

/* ==========================================================================
   Section 1: Glassmorphism Navigation Bar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--carpero-glass-bg);
  backdrop-filter: var(--carpero-glass-blur);
  -webkit-backdrop-filter: var(--carpero-glass-blur);
  border-bottom: 1px solid var(--carpero-border);
  padding: 0.85rem 0;
  transition: background 0.2s ease;
}

.site-header.scrolled {
  background: rgba(7, 9, 14, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
}

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

.brand-logo-img {
  height: 38px;
  width: auto;
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.75rem;
}

.nav-menu a {
  color: var(--carpero-text-secondary);
  font-size: 0.925rem;
  font-weight: 600;
  transition: color 0.2s ease;
}

.nav-menu a:hover {
  color: var(--carpero-text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--carpero-cyan);
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  background: var(--carpero-cyan-soft);
  border: 1px solid rgba(0, 210, 255, 0.25);
}

.nav-phone:hover {
  color: #FFFFFF;
  border-color: var(--carpero-cyan);
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-size: 1.6rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* ==========================================================================
   Section 2: High-Conversion Hero Section (The 50% Rule)
   ========================================================================== */
.hero-section {
  padding: 5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-6);
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-title {
  font-size: clamp(2.6rem, 4.8vw, 4.1rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 900;
}

.hero-desc {
  font-size: 1.18rem;
  line-height: 1.6;
  color: var(--carpero-text-secondary);
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.25rem;
}

.social-proof-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--carpero-border);
  margin-top: 0.5rem;
}

.proof-item {
  display: flex;
  flex-direction: column;
}

.proof-number {
  font-family: var(--carpero-font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--carpero-emerald);
}

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

/* Hero Right: 3D Master Mobius Visual Card */
.hero-visual-card {
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border);
  border-radius: 28px;
  padding: 1.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.hero-visual-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--carpero-gradient-brand);
  border-radius: 28px;
  z-index: -1;
  opacity: 0.25;
  filter: blur(8px);
}

.hero-img-container {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 0 35px rgba(0, 245, 155, 0.2);
}

.hero-master-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 20px;
  transition: transform 0.4s ease;
}

.hero-visual-card:hover .hero-master-img {
  transform: scale(1.02);
}

.hero-status-pill {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  right: 1.25rem;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 245, 155, 0.3);
  padding: 0.75rem 1rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
}

/* Integrations Trust Bar */
.integrations-banner {
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--carpero-border);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.integrations-label {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--carpero-text-muted);
}

.integrations-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.integration-pill {
  font-family: var(--carpero-font-mono);
  font-size: 0.775rem;
  font-weight: 700;
  color: #CBD5E1;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--carpero-border);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.integration-pill:hover {
  border-color: var(--carpero-cyan);
  color: #FFFFFF;
  background: var(--carpero-cyan-soft);
}

/* ==========================================================================
   Section 3: The Silent Cash Bleed (Problem & Agitation)
   ========================================================================== */
.leak-section {
  padding: var(--space-8) 0;
  background: rgba(15, 19, 28, 0.5);
  border-top: 1px solid var(--carpero-border);
  border-bottom: 1px solid var(--carpero-border);
}

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

.leak-card {
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border);
  border-radius: 20px;
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  position: relative;
  transition: all 0.25s ease;
}

.leak-card:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: 0 10px 30px rgba(245, 158, 11, 0.1);
}

.leak-tag {
  font-family: var(--carpero-font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--carpero-status-leaking);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  align-self: flex-start;
}

.leak-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFFFFF;
}

.leak-card p {
  font-size: 0.925rem;
  color: var(--carpero-text-secondary);
  line-height: 1.6;
}

.leak-stat {
  padding-top: 1.25rem;
  border-top: 1px solid var(--carpero-border);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.leak-stat-num {
  font-family: var(--carpero-font-mono);
  font-size: 2rem;
  font-weight: 900;
  color: var(--carpero-status-leaking);
  line-height: 1;
}

.leak-stat-desc {
  font-size: 0.8rem;
  color: var(--carpero-text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   Section 4: The 3-Engine Recovery Architecture
   ========================================================================== */
.engines-section {
  padding: var(--space-8) 0;
}

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

.engine-card {
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border);
  border-radius: 24px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  position: relative;
  transition: all 0.25s ease;
}

.engine-card:hover {
  transform: translateY(-4px);
  border-color: var(--carpero-border-hover);
  box-shadow: var(--carpero-glow-sm);
}

.engine-num {
  font-family: var(--carpero-font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--carpero-emerald);
  background: var(--carpero-emerald-soft);
  border: 1px solid rgba(0, 245, 155, 0.25);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 1rem;
}

.engine-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--carpero-text-primary);
  margin-bottom: 0.75rem;
}

.engine-desc {
  font-size: 0.95rem;
  color: var(--carpero-text-secondary);
  line-height: 1.6;
}

.engine-outcome-badge {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--carpero-emerald);
  background: var(--carpero-emerald-soft);
  border: 1px solid rgba(0, 245, 155, 0.25);
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  margin: 0.5rem 0;
}

.engine-proof-box {
  background: #080C14;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 1rem;
  font-family: var(--carpero-font-mono);
  font-size: 0.775rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.proof-bubble {
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  line-height: 1.4;
}

.proof-bubble.ai {
  background: rgba(0, 245, 155, 0.08);
  border: 1px solid rgba(0, 245, 155, 0.2);
  color: #A7F3D0;
}

.proof-bubble.user {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #E2E8F0;
}

.proof-status-line {
  font-size: 0.725rem;
  color: var(--carpero-cyan);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding-top: 0.4rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
}

.engine-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding-top: 1rem;
  border-top: 1px solid var(--carpero-border);
}

.engine-tags li {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--carpero-cyan);
  background: var(--carpero-cyan-soft);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}

/* ==========================================================================
   Section 5: Interactive Revenue Leak Calculator
   ========================================================================== */
.calculator-section {
  padding: var(--space-8) 0;
  background: linear-gradient(180deg, transparent 0%, rgba(15, 19, 28, 0.6) 100%);
  border-top: 1px solid var(--carpero-border);
  border-bottom: 1px solid var(--carpero-border);
}

.calculator-card {
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border);
  border-radius: 24px;
  padding: 3rem;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  box-shadow: var(--carpero-card-shadow);
}

.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

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

.slider-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--carpero-text-primary);
}

.slider-val-badge {
  font-family: var(--carpero-font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--carpero-cyan);
  background: var(--carpero-cyan-soft);
  border: 1px solid rgba(0, 210, 255, 0.25);
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  background: #1C2333;
  border-radius: 4px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--carpero-emerald);
  box-shadow: 0 0 12px var(--carpero-emerald);
  cursor: pointer;
  transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.calc-results {
  background: linear-gradient(145deg, #0A0E17 0%, #131A29 100%);
  border: 1px solid var(--carpero-border-glow);
  border-radius: 20px;
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
}

.calc-metric-box {
  border-bottom: 1px solid var(--carpero-border);
  padding-bottom: 1.25rem;
}

.calc-metric-box:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.calc-metric-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--carpero-text-muted);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.calc-metric-val {
  font-family: var(--carpero-font-mono);
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1;
}

.calc-metric-val.amber { color: var(--carpero-status-leaking); }
.calc-metric-val.emerald { color: var(--carpero-emerald); }

/* ==========================================================================
   Section 6: Live Simulated ROI Feed & Proof Metrics
   ========================================================================== */
.feed-section {
  padding: 5.5rem 0;
  background: rgba(10, 14, 23, 0.4);
  border-top: 1px solid var(--carpero-border);
  border-bottom: 1px solid var(--carpero-border);
}

.feed-container {
  max-width: 900px;
  margin: 0 auto;
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--carpero-card-shadow);
}

.feed-header {
  padding: 1.25rem 1.75rem;
  background: #090D15;
  border-bottom: 1px solid var(--carpero-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.feed-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.9rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--carpero-text-primary);
}

.feed-stream {
  display: flex;
  flex-direction: column;
}

.feed-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background 0.2s ease;
}

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

.feed-item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.feed-time {
  font-family: var(--carpero-font-mono);
  font-size: 0.775rem;
  color: var(--carpero-text-muted);
  min-width: 110px;
}

.feed-action {
  font-size: 0.95rem;
  color: var(--carpero-text-primary);
  flex: 1;
  padding: 0 1rem;
}

.feed-val {
  font-family: var(--carpero-font-mono);
  font-weight: 800;
  color: var(--carpero-emerald);
  font-size: 0.95rem;
}

/* ==========================================================================
   Section 7: The 48-Hour Rapid Onboarding Blueprint
   ========================================================================== */
.roadmap-section {
  padding: var(--space-8) 0;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.roadmap-card {
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border);
  border-radius: 18px;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform 0.2s ease;
}

.roadmap-card:hover {
  transform: translateY(-3px);
  border-color: var(--carpero-border-glow);
}

.roadmap-hour {
  font-family: var(--carpero-font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--carpero-cyan);
  text-transform: uppercase;
}

.roadmap-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--carpero-text-primary);
}

.roadmap-desc {
  font-size: 0.875rem;
  color: var(--carpero-text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   Section 8: Transparent Founding Partner Pricing
   ========================================================================== */
.pricing-section {
  padding: var(--space-8) 0;
  background: rgba(10, 14, 23, 0.5);
  border-top: 1px solid var(--carpero-border);
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  max-width: 1040px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border);
  border-radius: 24px;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.pricing-card.featured {
  background: linear-gradient(145deg, #0E1422 0%, #162035 100%);
  border: 2px solid var(--carpero-emerald);
  box-shadow: var(--carpero-glow-sm);
}

.pricing-top-tag {
  position: absolute;
  top: -14px;
  left: 2.5rem;
  background: var(--carpero-gradient-brand);
  color: var(--carpero-text-inverse);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 1rem;
  border-radius: 999px;
}

.tier-name {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.4rem;
}

.tier-desc {
  font-size: 0.9rem;
  color: var(--carpero-text-secondary);
  margin-bottom: 1.5rem;
}

.tier-price {
  font-family: var(--carpero-font-mono);
  font-size: 3.25rem;
  font-weight: 900;
  color: #FFFFFF;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.tier-price span {
  font-size: 1rem;
  color: var(--carpero-text-muted);
}

.tier-setup {
  font-size: 0.875rem;
  color: var(--carpero-emerald);
  font-weight: 700;
  margin-bottom: 2rem;
}

.features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
}

.features-list li {
  font-size: 0.925rem;
  color: #CBD5E1;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.features-list li::before {
  content: '✓';
  color: var(--carpero-emerald);
  font-weight: 900;
}

/* ==========================================================================
   Section 9: Straight Answers (FAQ)
   ========================================================================== */
.faq-section {
  padding: var(--space-8) 0;
}

.faq-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item.active {
  border-color: var(--carpero-border-hover);
}

.faq-question-btn {
  width: 100%;
  padding: 1.35rem 1.5rem;
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-size: 1.05rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  font-size: 1.25rem;
  color: var(--carpero-emerald);
  transition: transform 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1.5rem;
  color: var(--carpero-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.35rem;
}

/* ==========================================================================
   Section 10: Modal Audit Form
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 13, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
  animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

.modal-box {
  background: var(--carpero-bg-card);
  border: 1px solid var(--carpero-border-glow);
  border-radius: 24px;
  width: 100%;
  max-width: 680px;
  max-height: 92vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
  position: relative;
  padding: 2.25rem 2rem;
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: none;
  color: var(--carpero-text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
}

.modal-step {
  display: none;
}

.modal-step.active {
  display: block;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: #E2E8F0;
  margin-bottom: 0.4rem;
}

.form-input, .form-select {
  width: 100%;
  background: #090E18;
  border: 1px solid var(--carpero-border);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  color: #FFFFFF;
  outline: none;
  transition: border-color 0.2s ease;
  font-family: inherit;
}

.form-input:focus, .form-select:focus {
  border-color: var(--carpero-emerald);
  box-shadow: 0 0 12px rgba(0, 245, 155, 0.2);
}

.form-select option {
  background: #0F131C;
  color: #FFFFFF;
}

/* ==========================================================================
   Section 11: Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--carpero-border);
  padding: 4rem 0 3rem;
  background: #04060A;
  font-size: 0.875rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 380px;
}

.footer-logo {
  height: 34px;
  width: auto;
}

.footer-links-group {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #FFFFFF;
  margin-bottom: 0.25rem;
}

.footer-col a {
  color: var(--carpero-text-muted);
  font-size: 0.875rem;
}

.footer-col a:hover {
  color: var(--carpero-emerald);
}

.footer-bottom {
  border-top: 1px solid var(--carpero-border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--carpero-text-muted);
  font-size: 0.8rem;
}

/* ==========================================================================
   Mobile Sticky Action Bar
   ========================================================================== */
.mobile-sticky-bar {
  display: none;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid,
  .calculator-card,
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .leak-grid,
  .engines-grid {
    grid-template-columns: 1fr;
  }
  .roadmap-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu, .nav-phone {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.35rem;
  }
  .roadmap-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    flex-direction: column;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  /* Activate Mobile Sticky Conversion Bar */
  .mobile-sticky-bar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(7, 9, 14, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--carpero-border-glow);
    padding: 0.75rem 1rem;
    gap: 0.75rem;
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.8);
  }

  .mobile-sticky-bar .btn {
    flex: 1;
    padding: 0.75rem 0.5rem;
    font-size: 0.85rem;
    text-align: center;
    white-space: nowrap;
  }

  body {
    padding-bottom: 70px; /* Offset for sticky mobile bar */
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  .calculator-card,
  .modal-box {
    padding: 1.5rem;
  }
  .pricing-card {
    padding: 2rem 1.5rem;
  }
}