/* ═══════════════════════════════════════════════
   VORQEN — Design System & Styles
   Premium B2B SaaS-level design
   ═══════════════════════════════════════════════ */

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

:root {
  /* Brand Colors */
  --indigo-50: #eef7ff;
  --indigo-100: #dcefff;
  --indigo-200: #bce0ff;
  --indigo-400: #3b9af6;
  --indigo-500: #0F72C5;
  --indigo-600: #0648A9;
  --indigo-700: #05488C;

  --violet-400: #5acdf7;
  --violet-500: #1AAEEE;
  --violet-600: #0f86be;

  /* Neutrals */
  --gray-50: #fafafa;
  --gray-100: #f4f4f5;
  --gray-200: #e4e4e7;
  --gray-300: #d4d4d8;
  --gray-400: #a1a1aa;
  --gray-500: #71717a;
  --gray-600: #52525b;
  --gray-700: #3f3f46;
  --gray-800: #27272a;
  --gray-900: #18181b;
  --gray-950: #0c0c0e;

  /* Functional */
  --white: #ffffff;
  --black: #000000;

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, var(--indigo-500), var(--violet-500));
  --gradient-brand-hover: linear-gradient(135deg, var(--indigo-600), var(--violet-600));
  --gradient-dark: linear-gradient(180deg, var(--gray-950) 0%, #111114 100%);
  --gradient-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(15, 114, 197, 0.06), transparent 60%);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 120px;
  --container-max: 1200px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--white);
  overflow-x: hidden;
}

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

ul, ol {
  list-style: none;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

/* ─── UTILITIES ─── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
}

.btn-primary {
  background: var(--gradient-brand);
  color: var(--white);
  box-shadow: 0 1px 2px rgba(0,0,0,0.05), 0 0 0 0 rgba(15, 114, 197,0);
}

.btn-primary:hover {
  background: var(--gradient-brand-hover);
  box-shadow: 0 4px 16px rgba(15, 114, 197,0.3), 0 0 0 0 rgba(15, 114, 197,0);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  color: var(--gray-600);
  border: 1.5px solid var(--gray-200);
  background: var(--white);
}

.btn-ghost:hover {
  border-color: var(--gray-300);
  color: var(--gray-900);
  background: var(--gray-50);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

.btn-xl {
  padding: 18px 40px;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.btn-full {
  width: 100%;
}

/* ─── NAVBAR ─── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.4s var(--ease-out);
}

.navbar.scrolled {
  padding: 10px 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 10;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--gray-900);
}

.nav-logo-img {
  height: 48px;
  width: auto;
  display: block;
  object-fit: contain;
  transform: scale(2.4);
  transform-origin: left center;
}

.footer-logo-img {
  height: 56px;
  width: auto;
  display: block;
  object-fit: contain;
  margin-bottom: 24px;
  transform: scale(2);
  transform-origin: left center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-500);
  transition: color 0.2s;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 1px;
  transition: width 0.3s var(--ease-out);
}

.nav-link:hover {
  color: var(--gray-900);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-400);
}

.lang-btn {
  transition: color 0.2s;
}

.lang-btn:hover,
.lang-btn.active {
  color: var(--gray-900);
}

.lang-divider {
  color: var(--gray-300);
}


/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 10;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: all 0.3s var(--ease-out);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 20px 24px;
  background: var(--white);
  border-top: 1px solid var(--gray-100);
}

.mobile-menu.active {
  display: flex;
}

.mobile-link {
  padding: 12px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-100);
}

.mobile-link:hover {
  color: var(--gray-900);
}

/* ─── HERO SECTION ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 140px 0 100px;
  overflow: hidden;
  background: var(--white);
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  pointer-events: none;
}

.hero-glow-1 {
  width: 600px;
  height: 600px;
  background: var(--indigo-200);
  top: -200px;
  right: -100px;
  animation: float 20s ease-in-out infinite;
}

.hero-glow-2 {
  width: 400px;
  height: 400px;
  background: var(--violet-400);
  bottom: -100px;
  left: -100px;
  opacity: 0.2;
  animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -30px); }
  66% { transform: translate(-20px, 20px); }
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--indigo-50);
  border: 1px solid var(--indigo-100);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--indigo-600);
  margin-bottom: 32px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--indigo-500);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
  font-size: clamp(40px, 5.5vw, 64px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: var(--gray-900);
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(17px, 1.3vw, 19px);
  line-height: 1.7;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto 40px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.hero-proof {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-number {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--gray-900);
}

.stat-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--gray-200);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--gray-300), transparent);
  position: relative;
}

.scroll-line::before {
  content: '';
  position: absolute;
  top: 0;
  left: -1px;
  width: 3px;
  height: 16px;
  background: var(--indigo-500);
  border-radius: 2px;
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0% { top: 0; opacity: 1; }
  100% { top: 60px; opacity: 0; }
}

/* ─── SECTION COMMON ─── */
.section {
  position: relative;
  padding: var(--section-padding) 0;
  overflow: hidden;
}

.section-light {
  background: var(--white);
}

.section-dark {
  background: var(--gray-950);
  color: var(--white);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 72px;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--indigo-500);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.section-dark .section-label {
  color: var(--indigo-400);
}

.section-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  margin-bottom: 20px;
}

.section-dark .section-title {
  color: var(--white);
}

.section-subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: var(--gray-500);
}

.section-dark .section-subtitle {
  color: var(--gray-400);
}

/* ─── PROBLEM SECTION ─── */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.problem-card {
  padding: 32px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  transition: all 0.4s var(--ease-out);
}

.problem-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(15, 114, 197, 0.2);
  transform: translateY(-4px);
}

.problem-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(15, 114, 197, 0.1);
  margin-bottom: 20px;
}

.problem-icon svg {
  color: var(--indigo-400);
}

.problem-card h3 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
  color: var(--white);
}

.problem-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray-400);
}

/* ─── SOLUTION SECTION ─── */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.solution-card {
  padding: 36px;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  transition: all 0.4s var(--ease-out);
  position: relative;
}

.solution-card:hover {
  border-color: var(--indigo-200);
  box-shadow: 0 8px 32px rgba(15, 114, 197, 0.08);
  transform: translateY(-4px);
}

.solution-number {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--indigo-500);
  margin-bottom: 20px;
}

.solution-content h3 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.solution-content p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray-500);
  margin-bottom: 16px;
}

.solution-features {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.solution-features li {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  padding-left: 16px;
  position: relative;
}

.solution-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--indigo-500);
}

/* ─── PROCESS SECTION ─── */
.process-timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.process-line {
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--indigo-500), var(--violet-500), rgba(26, 174, 238, 0.1));
}

.process-step {
  display: flex;
  gap: 32px;
  padding: 32px 0;
  position: relative;
}

.step-marker {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 0 6px var(--gray-950), 0 0 20px rgba(15, 114, 197, 0.3);
}

.step-number {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.step-content {
  padding-top: 8px;
}

.step-content h3 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray-400);
  max-width: 500px;
}

/* ─── AUDIT SECTION ─── */
.section-audit {
  background: var(--gradient-dark);
  position: relative;
  padding: 140px 0;
}

.audit-glow {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(15, 114, 197, 0.12) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.section-label-light {
  color: var(--indigo-400);
}

.audit-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.audit-title {
  font-size: clamp(32px, 3.5vw, 44px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--white);
  margin-bottom: 16px;
}

.audit-subtitle {
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-400);
  margin-bottom: 32px;
}

.audit-includes {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.audit-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-300);
}

.audit-item svg {
  color: var(--indigo-400);
  flex-shrink: 0;
}

/* ─── AUDIT FORM ─── */
.audit-form-container {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  padding: 40px;
  backdrop-filter: blur(20px);
}

.audit-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  z-index: 10;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-300);
  letter-spacing: 0.01em;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-size: 15px;
  transition: all 0.3s var(--ease-out);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--gray-600);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--indigo-500);
  box-shadow: 0 0 0 3px rgba(15, 114, 197, 0.15);
  background: rgba(255, 255, 255, 0.08);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2371717a' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group select option {
  background: var(--gray-900);
  color: var(--white);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-disclaimer {
  text-align: center;
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ─── INDUSTRIES SECTION ─── */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.industry-card {
  padding: 36px;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-lg);
  transition: all 0.4s var(--ease-out);
  background: var(--white);
}

.industry-card:hover {
  border-color: var(--indigo-200);
  box-shadow: 0 8px 32px rgba(15, 114, 197, 0.08);
  transform: translateY(-4px);
}

.industry-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--indigo-50);
  margin-bottom: 20px;
}

.industry-icon svg {
  color: var(--indigo-500);
}

.industry-card h3 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.industry-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray-500);
}

/* ─── CASE STUDIES SECTION ─── */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  padding: 36px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  transition: all 0.4s var(--ease-out);
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(15, 114, 197, 0.2);
  transform: translateY(-4px);
}

.case-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 12px;
  background: rgba(15, 114, 197, 0.15);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: var(--indigo-400);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.case-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 12px;
}

.case-card > p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-400);
  margin-bottom: 24px;
  flex: 1;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.case-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.metric-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--indigo-400);
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── FINAL CTA SECTION ─── */
.section-cta {
  background: var(--white);
  padding: 160px 0;
  position: relative;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
  pointer-events: none;
}

.cta-glow-1 {
  width: 500px;
  height: 500px;
  background: var(--indigo-200);
  top: -200px;
  left: -100px;
}

.cta-glow-2 {
  width: 400px;
  height: 400px;
  background: var(--violet-400);
  bottom: -200px;
  right: -100px;
  opacity: 0.15;
}

.cta-content {
  position: relative;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(36px, 4.5vw, 54px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--gray-900);
  margin-bottom: 20px;
}

.cta-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: var(--gray-500);
  margin-bottom: 40px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  margin-bottom: 24px;
}

.cta-note {
  font-size: 14px;
  color: var(--gray-400);
  font-weight: 500;
}

/* ─── FOOTER ─── */
.footer {
  background: var(--gray-950);
  padding: 80px 0 40px;
  color: var(--gray-400);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand .nav-logo {
  margin-bottom: 12px;
}

.footer-brand .logo-text {
  color: var(--white);
}

.footer-tagline {
  font-size: 14px;
  color: var(--gray-500);
}

.footer-links-group {
  display: flex;
  gap: 80px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 14px;
  color: var(--gray-400);
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--gray-600);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 13px;
  color: var(--gray-600);
  transition: color 0.2s;
}

.footer-legal a:hover {
  color: var(--gray-400);
}

/* ═══════════════════════════════════════════════
   ANIMATIONS (Intersection Observer driven)
   ═══════════════════════════════════════════════ */

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0ms; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 80ms; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 160ms; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 240ms; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 320ms; }
.stagger-children .fade-in:nth-child(6) { transition-delay: 400ms; }

/* ═══════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════ */

@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .problems-grid,
  .solutions-grid,
  .industries-grid,
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .audit-wrapper {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .footer-content {
    flex-direction: column;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 64px;
  }

  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .nav-actions .btn {
    display: none;
  }

  .hero {
    padding: 120px 0 80px;
    min-height: auto;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-proof {
    gap: 24px;
  }

  .hero-stat-divider {
    display: none;
  }

  .hero-ctas {
    flex-direction: column;
    gap: 12px;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .problems-grid,
  .solutions-grid,
  .industries-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }

  .case-metrics {
    grid-template-columns: repeat(3, 1fr);
  }

  .audit-wrapper {
    gap: 40px;
  }

  .audit-form-container {
    padding: 28px;
  }

  .footer-links-group {
    gap: 40px;
    flex-wrap: wrap;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .hero-scroll-indicator {
    display: none;
  }

  .section-cta {
    padding: 100px 0;
  }
}

@media (max-width: 480px) {
  .hero-proof {
    flex-direction: column;
    gap: 20px;
  }

  .case-metrics {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .process-step {
    gap: 20px;
  }

  .step-marker {
    width: 42px;
    height: 42px;
  }

  .process-line {
    left: 20px;
  }
}