/* ============================================
   RE-VALUE LANDING PAGE - PREMIUM SAAS DESIGN
   ============================================

   Table of Contents:
   1. CSS Variables (Design Tokens)
   2. CSS Reset & Base
   3. Typography
   4. Layout Utilities
   5. Components
   6. Sections
   7. Animations
   8. Media Queries
   9. Accessibility

   ============================================ */

/* ============================================
   1. CSS VARIABLES (DESIGN TOKENS)
   ============================================ */

:root {
  /* Primary - Arancione Premium */
  --primary-50: #FFF7ED;
  --primary-100: #FFEDD5;
  --primary-200: #FED7AA;
  --primary-300: #FDBA74;
  --primary-400: #FB923C;
  --primary-500: #F97316;
  --primary-600: #EA580C;
  --primary-700: #C2410C;
  --primary-800: #9A3412;
  --primary-900: #7C2D12;

  /* Neutrals - Refined */
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #E5E5E5;
  --gray-300: #D4D4D4;
  --gray-400: #A3A3A3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;
  --gray-950: #0A0A0A;

  /* Semantic */
  --success-500: #22C55E;
  --warning-500: #EAB308;
  --error-500: #EF4444;

  /* Surface Colors */
  --surface-ground: #FAFAFA;
  --surface-card: #FFFFFF;
  --surface-section: #F5F5F5;
  --surface-border: #E5E5E5;
  --surface-dark: #0A0A0A;

  /* Text Colors */
  --text-primary: #171717;
  --text-secondary: #525252;
  --text-tertiary: #737373;
  --text-inverse: #FFFFFF;
  --text-muted: #A3A3A3;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Container */
  --container-max: 1280px;
  --container-padding: 5%;

  /* Shadows - Refined */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.06);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 60px -15px rgba(249, 115, 22, 0.3);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   2. CSS RESET & BASE
   ============================================ */

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

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

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--surface-ground);
  overflow-x: hidden;
}

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

input,
button,
textarea,
select {
  font: inherit;
}

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

ul,
ol {
  list-style: none;
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ============================================
   4. LAYOUT UTILITIES
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ============================================
   5. COMPONENTS
   ============================================ */

/* === Skip Link === */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--primary-500);
  color: var(--text-inverse);
  padding: var(--space-3) var(--space-4);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--primary-500);
  color: var(--text-inverse);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn--primary:hover {
  background: var(--primary-600);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.btn--secondary {
  background: var(--surface-card);
  color: var(--text-primary);
  border-color: var(--surface-border);
}

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

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  font-weight: 500;
}

.btn--ghost:hover {
  color: var(--text-primary);
  background: var(--gray-100);
}

.btn--outline {
  background: transparent;
  color: var(--primary-500);
  border-color: var(--primary-200);
}

.btn--outline:hover {
  background: var(--primary-50);
  border-color: var(--primary-300);
}

.btn--white {
  background: var(--surface-card);
  color: var(--text-primary);
  font-weight: 600;
}

.btn--white:hover {
  background: var(--gray-50);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn--ghost-white {
  background: transparent;
  color: var(--text-inverse);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn--ghost-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn--dark {
  background: var(--gray-900);
  color: var(--text-inverse);
  font-weight: 600;
}

.btn--dark:hover {
  background: var(--gray-800);
  transform: translateY(-1px);
  box-shadow: var(--shadow-xl);
}

.btn--lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

.btn--block {
  width: 100%;
}

.btn i {
  font-size: 0.9em;
  transition: transform var(--transition-fast);
}

.btn:hover i {
  transform: translateX(2px);
}

/* === Section Header === */
.section-header {
  max-width: 680px;
  margin-bottom: var(--space-16);
}

.section-header--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-header__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary-600);
  margin-bottom: var(--space-4);
  padding: var(--space-1) var(--space-3);
  background: var(--primary-50);
  border-radius: var(--radius-full);
}

.section-header__title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
}

.section-header__subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* === Form Elements === */
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-group--checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.form-group--checkbox input {
  margin-top: 0.25em;
  width: 18px;
  height: 18px;
  accent-color: var(--primary-500);
}

.form-group--checkbox label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.form-group--checkbox label a {
  color: var(--primary-500);
  text-decoration: underline;
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  background: var(--surface-card);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
}

.form-input--error {
  border-color: var(--error-500);
}

.form-error {
  display: block;
  font-size: var(--text-xs);
  color: var(--error-500);
  margin-top: var(--space-1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

/* ============================================
   6. SECTIONS
   ============================================ */

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.header--scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--surface-border);
  box-shadow: var(--shadow-sm);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-4) var(--container-padding);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header__logo-text {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.header__nav {
  display: none;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.header__nav-item {
  position: relative;
}

.header__nav-item--dropdown .header__nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.header__nav-item--dropdown .header__nav-link i {
  font-size: 0.7em;
  transition: transform var(--transition-fast);
}

.header__nav-item--dropdown .header__nav-link[aria-expanded="true"] i {
  transform: rotate(180deg);
}

.header__nav-link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: transparent;
  border: none;
  cursor: pointer;
}

.header__nav-link:hover {
  color: var(--text-primary);
}

.header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 280px;
  padding: var(--space-2);
  background: var(--surface-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--surface-border);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.header__nav-item--dropdown .header__nav-link[aria-expanded="true"] + .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.header__dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  transition: background var(--transition-fast);
}

.header__dropdown-item:hover {
  background: var(--gray-50);
}

.header__dropdown-item i {
  font-size: var(--text-xl);
  color: var(--primary-500);
  margin-top: 2px;
}

.header__dropdown-title {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.header__dropdown-desc {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.header__actions {
  display: none;
  align-items: center;
  gap: var(--space-3);
}

.header__actions .btn--primary {
  font-weight: 700;
}

.header__mobile-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.header__mobile-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition-fast);
}

.header__mobile-toggle.is-active .header__mobile-toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__mobile-toggle.is-active .header__mobile-toggle-bar:nth-child(2) {
  opacity: 0;
}

.header__mobile-toggle.is-active .header__mobile-toggle-bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.header__mobile-menu {
  position: fixed;
  top: 73px;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: calc(100vh - 73px);
  background: var(--surface-card);
  padding: var(--space-6) var(--container-padding);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
  z-index: 999;
  opacity: 0;
}

.header__mobile-menu.is-open {
  transform: translateX(0);
  opacity: 1;
}

.header__mobile-nav {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.header__mobile-link {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-primary);
  border-bottom: 1px solid var(--surface-border);
}

.header__mobile-divider {
  border: none;
  border-top: 1px solid var(--surface-border);
  margin: var(--space-4) 0;
}

.header__mobile-nav .btn {
  margin-top: var(--space-2);
}

.header__mobile-nav .btn--primary {
  font-weight: 700;
}

/* === Hero === */
.hero {
  position: relative;
  padding: calc(var(--space-32) + 73px) var(--container-padding) var(--space-20);
  background: linear-gradient(180deg, var(--surface-card) 0%, var(--primary-50) 100%);
  overflow: hidden;
}

/* Grid Background with Fade */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(to right, var(--primary-200) 1px, transparent 1px),
    linear-gradient(to bottom, var(--primary-200) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: linear-gradient(to top, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.25) 50%, rgba(0,0,0,0.1) 80%, transparent 95%);
  -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.25) 50%, rgba(0,0,0,0.1) 80%, transparent 95%);
}

/* Subtle Gradient Overlay */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(circle, var(--primary-100) 0%, transparent 60%);
  opacity: 0.5;
  pointer-events: none;
}

.hero__container {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  gap: var(--space-16);
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-6);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--success-500);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.1); }
}

.hero__badge-text {
  color: var(--text-secondary);
}

.hero__badge-link {
  font-weight: 600;
  color: var(--primary-500);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.hero__badge-link:hover {
  color: var(--primary-600);
}

.hero__title {
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  letter-spacing: var(--tracking-tight);
}

.hero__title-highlight {
  display: block;
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  max-width: 540px;
  line-height: var(--leading-relaxed);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.hero__trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.hero__trust-item i {
  color: var(--success-500);
  font-size: var(--text-base);
}

/* Hero Visual */
.hero__visual {
  display: none;
}

.hero__visual-wrapper {
  position: relative;
}

.hero__mockup {
  background: var(--surface-card);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
  border: 1px solid var(--surface-border);
}

.hero__mockup-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--gray-100);
  border-bottom: 1px solid var(--surface-border);
}

.hero__mockup-dots {
  display: flex;
  gap: 6px;
}

.hero__mockup-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.hero__mockup-dots span:first-child { background: #FF5F56; }
.hero__mockup-dots span:nth-child(2) { background: #FFBD2E; }
.hero__mockup-dots span:nth-child(3) { background: #27CA40; }

.hero__mockup-title {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.hero__mockup-content {
  display: grid;
  grid-template-columns: 60px 1fr;
  min-height: 320px;
}

.hero__mockup-sidebar {
  padding: var(--space-3);
  background: var(--gray-50);
  border-right: 1px solid var(--surface-border);
}

.hero__mockup-nav-item {
  width: 100%;
  height: 36px;
  margin-bottom: var(--space-2);
  background: var(--gray-200);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.hero__mockup-nav-item.active {
  background: var(--primary-500);
}

.hero__mockup-main {
  padding: var(--space-4);
  background: var(--surface-card);
}

.hero__mockup-card {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  border: 1px solid var(--surface-border);
}

.hero__mockup-card--large {
  min-height: 160px;
}

.hero__mockup-card-header {
  height: 14px;
  width: 35%;
  background: var(--gray-200);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
}

.hero__mockup-chart {
  height: 90px;
  background: linear-gradient(90deg, var(--primary-200) 0%, var(--primary-400) 100%);
  border-radius: var(--radius-md);
}

.hero__mockup-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.hero__mockup-stat {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.hero__mockup-stat--accent {
  color: var(--success-500);
}

.hero__mockup-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

/* Floating Cards */
.hero__float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--surface-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--surface-border);
  animation: float 4s ease-in-out infinite;
}

.hero__float i {
  font-size: var(--text-xl);
  color: var(--primary-500);
}

.hero__float-value {
  display: block;
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--success-500);
}

.hero__float-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.hero__float--stats {
  top: 15%;
  right: -20px;
  animation-delay: 0s;
}

.hero__float--accuracy {
  bottom: 25%;
  left: -20px;
  animation-delay: 2s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Hero Social Proof */
.hero__social-proof {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: var(--space-20) auto 0;
  padding-top: var(--space-16);
  border-top: 1px solid var(--surface-border);
  text-align: center;
}

.hero__social-proof-text {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-8);
}

.hero__social-proof-text strong {
  color: var(--text-secondary);
}

.hero__logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
}

.hero__logo-item {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-300);
  padding: var(--space-2) var(--space-4);
  transition: color var(--transition-fast);
}

.hero__logo-item:hover {
  color: var(--gray-500);
}

/* === Features === */
.features {
  padding: var(--space-24) var(--container-padding);
  background: var(--surface-card);
}

.features__container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.feature-card {
  padding: var(--space-6);
  background: var(--surface-ground);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.feature-card__icon i {
  font-size: var(--text-xl);
}

.feature-card__icon--primary {
  background: var(--primary-100);
}

.feature-card__icon--primary i {
  color: var(--primary-600);
}

.feature-card__icon--accent {
  background: var(--primary-50);
}

.feature-card__icon--accent i {
  color: var(--primary-500);
}

.feature-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.feature-card__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.feature-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary-500);
  transition: gap var(--transition-fast);
}

.feature-card__link:hover {
  gap: var(--space-2);
}

/* === How It Works === */
.how-it-works {
  padding: var(--space-32) var(--container-padding);
  background: var(--surface-card);
}

.how-it-works__container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.how-it-works__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
}

.step__number {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--primary-500);
  color: var(--text-inverse);
  font-size: var(--text-xl);
  font-weight: 700;
  border-radius: var(--radius-xl);
}

.step__content {
  flex: 1;
  padding-top: var(--space-2);
}

.step__title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.step__description {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.step__connector {
  display: none;
}

/* === Partners === */
.partners {
  padding: var(--space-32) var(--container-padding);
  background: var(--surface-ground);
}

.partners__container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.partners__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.partner-logo span {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-400);
}

.partner-logo:hover {
  border-color: var(--gray-200);
  box-shadow: var(--shadow-md);
}

.partner-logo:hover span {
  color: var(--gray-600);
}

.partners__cta {
  text-align: center;
}

.partners__cta p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

/* === Pricing === */
.pricing {
  padding: var(--space-32) var(--container-padding);
  background: var(--surface-card);
}

.pricing__container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.pricing__toggle {
  display: flex;
  justify-content: center;
  gap: var(--space-1);
  margin-bottom: var(--space-12);
  padding: var(--space-1);
  background: var(--gray-100);
  border-radius: var(--radius-full);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.pricing__toggle-btn {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pricing__toggle-btn--active {
  background: var(--surface-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.pricing__toggle-badge {
  display: inline-block;
  padding: 2px 8px;
  margin-left: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary-600);
  background: var(--primary-100);
  border-radius: var(--radius-full);
}

.pricing__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.pricing-card {
  position: relative;
  padding: var(--space-8);
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

.pricing-card:hover {
  border-color: var(--gray-200);
  box-shadow: var(--shadow-lg);
}

.pricing-card--featured {
  border-color: var(--primary-500);
  border-width: 2px;
}

.pricing-card__badge {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: var(--space-2) var(--space-4);
  background: var(--primary-500);
  color: var(--text-inverse);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.pricing-card__header {
  margin-bottom: var(--space-6);
}

.pricing-card__name {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.pricing-card__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
}

.pricing-card__currency {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.pricing-card__amount {
  font-size: var(--text-5xl);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  letter-spacing: var(--tracking-tight);
}

.pricing-card__amount--custom {
  font-size: var(--text-2xl);
}

.pricing-card__period {
  font-size: var(--text-base);
  color: var(--text-tertiary);
}

.pricing-card__features {
  margin-bottom: var(--space-8);
}

.pricing-card__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.pricing-card__features i {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--success-500);
}

.pricing-card__feature--disabled {
  color: var(--text-muted);
}

.pricing-card__feature--disabled i {
  color: var(--gray-300);
}

/* === Testimonials === */
.testimonials {
  padding: var(--space-32) var(--container-padding);
  background: var(--surface-ground);
}

.testimonials__container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.testimonial-card {
  padding: var(--space-8);
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-2xl);
}

.testimonial-card__stars {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
}

.testimonial-card__stars i {
  color: var(--warning-500);
  font-size: var(--text-sm);
}

.testimonial-card__quote {
  font-size: var(--text-base);
  color: var(--text-primary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-card__avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--gray-100);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
}

.testimonial-card__name {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  font-style: normal;
}

.testimonial-card__role {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

/* === Contact === */
.contact {
  padding: var(--space-32) var(--container-padding);
  background: var(--surface-card);
}

.contact__container {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  gap: var(--space-12);
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.contact__info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact__info-item i {
  font-size: var(--text-xl);
  color: var(--primary-500);
  margin-top: 2px;
}

.contact__info-label {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact__info-item a,
.contact__info-item span {
  font-size: var(--text-base);
  color: var(--text-primary);
  font-weight: 500;
}

.contact__info-item a:hover {
  color: var(--primary-500);
}

.contact__form {
  background: var(--surface-ground);
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--surface-border);
}

/* === CTA === */
.cta {
  position: relative;
  padding: var(--space-32) var(--container-padding);
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  text-align: center;
  overflow: hidden;
}

.cta__container {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
}

.cta__title {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-inverse);
  margin-bottom: var(--space-4);
  letter-spacing: var(--tracking-tight);
}

.cta__subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

/* === Footer === */
.footer {
  padding: var(--space-20) var(--container-padding) var(--space-8);
  background: var(--gray-900);
  color: var(--text-inverse);
}

.footer__container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--gray-800);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.footer__logo span {
  font-size: var(--text-xl);
  font-weight: 700;
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin-bottom: var(--space-6);
  line-height: var(--leading-relaxed);
}

.footer__social {
  display: flex;
  gap: var(--space-2);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gray-800);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--gray-700);
  transform: translateY(-2px);
}

.footer__social-link i {
  font-size: var(--text-lg);
  color: var(--gray-400);
}

.footer__social-link:hover i {
  color: var(--text-inverse);
}

.footer__nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.footer__nav-title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-inverse);
}

.footer__nav-list li {
  margin-bottom: var(--space-3);
}

.footer__nav-list a {
  font-size: var(--text-sm);
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.footer__nav-list a:hover {
  color: var(--text-inverse);
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  text-align: center;
}

.footer__copyright {
  font-size: var(--text-sm);
  color: var(--gray-500);
}

.footer__badges {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
}

.footer__badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--gray-500);
}

.footer__badge i {
  color: var(--success-500);
}

/* ============================================
   7. ANIMATIONS
   ============================================ */

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation delays */
.animate-on-scroll:nth-child(1) { transition-delay: 0ms; }
.animate-on-scroll:nth-child(2) { transition-delay: 100ms; }
.animate-on-scroll:nth-child(3) { transition-delay: 200ms; }
.animate-on-scroll:nth-child(4) { transition-delay: 300ms; }
.animate-on-scroll:nth-child(5) { transition-delay: 400ms; }
.animate-on-scroll:nth-child(6) { transition-delay: 500ms; }

/* ============================================
   8. MEDIA QUERIES
   ============================================ */

/* Tablet (768px) */
@media (min-width: 768px) {
  .hero__title {
    font-size: var(--text-5xl);
  }

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

  .how-it-works__steps {
    flex-direction: row;
    align-items: flex-start;
  }

  .step {
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
  }

  .step__connector {
    display: block;
    flex: 0 0 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--gray-200) 0%, var(--gray-300) 50%, var(--gray-200) 100%);
    margin-top: 28px;
  }

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

  .pricing__grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
  }

  .pricing-card--featured {
    transform: scale(1.02);
  }

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

  .contact__container {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .footer__top {
    grid-template-columns: 1.5fr 2.5fr;
  }

  .footer__nav {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* Desktop (1024px) */
@media (min-width: 1024px) {
  .header__nav {
    display: block;
  }

  .header__actions {
    display: flex;
  }

  .header__mobile-toggle {
    display: none;
  }

  .hero {
    padding-top: calc(var(--space-32) + 80px);
    padding-bottom: var(--space-24);
  }

  .hero__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }

  .hero__title {
    font-size: var(--text-6xl);
  }

  .hero__visual {
    display: block;
  }

  .section-header__title {
    font-size: var(--text-5xl);
  }

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

  .partners__grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .cta__title {
    font-size: var(--text-4xl);
  }
}

/* Large Desktop (1280px) */
@media (min-width: 1280px) {
  .hero__title {
    font-size: var(--text-7xl);
  }

  .hero__mockup-content {
    min-height: 380px;
  }
}

/* ============================================
   9. ACCESSIBILITY
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus visible styles */
:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --surface-border: var(--gray-600);
  }

  .btn--ghost,
  .btn--secondary {
    border: 2px solid currentColor;
  }
}