/* ==========================================================================
   Movement Atlas — Global Stylesheet
   Dark SaaS theme · Pure CSS · Custom Properties
   ========================================================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ==========================================================================
   1. Custom Properties (Design Tokens)
   ========================================================================== */
:root {
  /* Backgrounds */
  --bg-primary: #0a0a0a;
  --bg-card: #111111;
  --bg-elevated: #1a1a1a;
  --bg-hover: #1f1f1f;
  --bg-input: #161616;

  /* Accent */
  --accent: #F97316;
  --accent-hover: #ea6a0e;
  --accent-light: rgba(249, 115, 22, 0.15);
  --accent-glow: rgba(249, 115, 22, 0.35);

  /* Text */
  --text-heading: #ffffff;
  --text-body: #a0a0a0;
  --text-muted: #666666;
  --text-inverse: #0a0a0a;

  /* Borders */
  --border: #222222;
  --border-light: #333333;
  --border-focus: #F97316;

  /* Status */
  --success: #22c55e;
  --success-light: rgba(34, 197, 94, 0.15);
  --error: #ef4444;
  --error-light: rgba(239, 68, 68, 0.15);
  --warning: #eab308;
  --info: #3b82f6;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 1.875rem;
  --font-4xl: 2.25rem;
  --font-5xl: 3rem;
  --font-6xl: 3.75rem;
  --font-7xl: 4.5rem;

  /* 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;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --nav-height: 72px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 20px var(--accent-glow);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

/* ==========================================================================
   2. Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

a:hover {
  color: var(--accent-hover);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  font-size: inherit;
  color: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-heading);
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: var(--font-6xl); }
h2 { font-size: var(--font-4xl); }
h3 { font-size: var(--font-2xl); }
h4 { font-size: var(--font-xl); }
h5 { font-size: var(--font-lg); }
h6 { font-size: var(--font-base); }

p {
  margin-bottom: var(--space-4);
  color: var(--text-body);
}

::selection {
  background: var(--accent);
  color: var(--text-heading);
}

/* ==========================================================================
   3. Layout & Container
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--space-20) 0;
}

.section--lg {
  padding: var(--space-24) 0;
}

.section--dark {
  background-color: var(--bg-card);
}

.section--elevated {
  background-color: var(--bg-elevated);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-16);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

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

.section-label {
  display: inline-block;
  font-size: var(--font-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: var(--space-3);
}

/* ==========================================================================
   4. Grid Layouts
   ========================================================================== */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

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

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

.grid--auto {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ==========================================================================
   5. Navigation Bar
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--duration-normal) ease,
              box-shadow var(--duration-normal) ease;
}

.navbar.scrolled {
  background: rgba(10, 10, 10, 0.96);
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-xl);
  font-weight: 800;
  color: var(--text-heading);
  text-decoration: none;
}

.navbar__logo img {
  height: 36px;
  width: auto;
}

.navbar__logo:hover {
  color: var(--text-heading);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.navbar__link {
  position: relative;
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-body);
  text-decoration: none;
  padding: var(--space-2) 0;
  transition: color var(--duration-fast) ease;
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--text-heading);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: width var(--duration-normal) var(--ease-out);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  width: 100%;
}

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

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  cursor: pointer;
  z-index: 1001;
}

.navbar__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-heading);
  border-radius: 2px;
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-fast) ease;
}

.navbar__hamburger span + span {
  margin-top: 6px;
}

.navbar__hamburger.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.navbar__hamburger.open span:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 999;
  padding: var(--space-8) var(--space-6);
  flex-direction: column;
  gap: var(--space-2);
  overflow-y: auto;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--duration-normal) ease,
              transform var(--duration-normal) var(--ease-out);
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu__link {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--font-lg);
  font-weight: 500;
  color: var(--text-body);
  border-bottom: 1px solid var(--border);
  transition: color var(--duration-fast) ease;
}

.mobile-menu__link:hover,
.mobile-menu__link.active {
  color: var(--text-heading);
}

/* ==========================================================================
   6. Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 28px;
  font-size: var(--font-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
}

.btn--primary {
  background: var(--accent);
  color: var(--text-inverse);
  border: 1px solid var(--accent);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
  color: var(--text-inverse);
}

.btn--secondary {
  background: transparent;
  color: var(--text-heading);
  border: 1px solid var(--border-light);
}

.btn--secondary:hover {
  border-color: var(--text-heading);
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-1px);
  color: var(--text-heading);
}

.btn--ghost {
  background: transparent;
  color: var(--text-body);
  border: 1px solid transparent;
  padding: 10px 20px;
}

.btn--ghost:hover {
  color: var(--text-heading);
  background: rgba(255, 255, 255, 0.05);
}

.btn--lg {
  padding: 16px 36px;
  font-size: var(--font-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: 8px 18px;
  font-size: var(--font-xs);
}

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

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ==========================================================================
   7. Hero Section
   ========================================================================== */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  filter: blur(100px);
  opacity: 0.4;
  animation: heroGlow 8s ease-in-out infinite alternate;
}

.hero__bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.15) 0%, transparent 70%);
  filter: blur(80px);
  opacity: 0.3;
  animation: heroGlow 10s ease-in-out 2s infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, -20px) scale(1.1); }
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: var(--space-16) 0;
}

.hero__content--center {
  text-align: center;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 16px;
  background: var(--accent-light);
  border: 1px solid rgba(249, 115, 22, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--accent);
  margin-bottom: var(--space-6);
}

.hero h1 {
  font-size: var(--font-7xl);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
}

.gradient-text {
  background: linear-gradient(135deg, var(--text-heading) 0%, var(--accent) 50%, var(--success) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text--orange {
  background: linear-gradient(135deg, var(--accent) 0%, #fb923c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--font-xl);
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: var(--space-10);
  max-width: 640px;
}

.hero__content--center .hero__subtitle {
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__content--center .hero__actions {
  justify-content: center;
}

/* ==========================================================================
   8. Feature Cards
   ========================================================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out);
}

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

.card--accent:hover {
  border-color: var(--accent);
  box-shadow: 0 0 30px var(--accent-glow);
}

.card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--accent-light);
  color: var(--accent);
  font-size: var(--font-2xl);
  margin-bottom: var(--space-5);
}

.card__title {
  font-size: var(--font-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.card__text {
  color: var(--text-muted);
  font-size: var(--font-sm);
  line-height: 1.7;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--duration-normal) var(--ease-out);
}

.card__link:hover {
  gap: var(--space-3);
}

/* ==========================================================================
   9. User Type Cards (Business / Instructor / Student)
   ========================================================================== */
.user-type-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.user-type-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
}

.user-type-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.user-type-card:hover::before {
  opacity: 1;
}

.user-type-card__icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  font-size: var(--font-4xl);
  margin: 0 auto var(--space-6);
  transition: transform var(--duration-normal) var(--ease-out);
}

.user-type-card:hover .user-type-card__icon {
  transform: scale(1.1);
}

.user-type-card__title {
  font-size: var(--font-2xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.user-type-card__desc {
  color: var(--text-muted);
  font-size: var(--font-sm);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.user-type-card__features {
  text-align: left;
  margin-bottom: var(--space-8);
}

.user-type-card__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: var(--font-sm);
  color: var(--text-body);
}

.user-type-card__features li::before {
  content: '\2713';
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   10. Tabbed Content
   ========================================================================== */
.tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-10);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tabs__tab {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--duration-fast) ease;
}

.tabs__tab:hover {
  color: var(--text-body);
}

.tabs__tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-content {
  display: none;
  animation: tabFadeIn var(--duration-normal) var(--ease-out);
}

.tab-content.active {
  display: block;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   11. Step / Process Indicators
   ========================================================================== */
.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  counter-reset: step;
  position: relative;
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
  padding: 0 var(--space-4);
}

.step__number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 2px solid var(--border-light);
  color: var(--text-muted);
  font-size: var(--font-xl);
  font-weight: 700;
  margin: 0 auto var(--space-5);
  position: relative;
  z-index: 2;
  transition: all var(--duration-normal) var(--ease-out);
}

.step.active .step__number,
.step.completed .step__number {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text-inverse);
}

.step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(50% + 32px);
  right: calc(-50% + 32px);
  height: 2px;
  background: var(--border-light);
  z-index: 1;
}

.step.completed:not(:last-child)::after {
  background: var(--accent);
}

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

.step__desc {
  font-size: var(--font-xs);
  color: var(--text-muted);
  line-height: 1.6;
}

/* Vertical steps variant */
.steps--vertical {
  flex-direction: column;
  gap: 0;
}

.steps--vertical .step {
  display: flex;
  align-items: flex-start;
  text-align: left;
  padding: 0 0 var(--space-8) 0;
}

.steps--vertical .step__number {
  flex-shrink: 0;
  margin: 0 var(--space-5) 0 0;
}

.steps--vertical .step:not(:last-child)::after {
  top: 56px;
  left: 28px;
  right: auto;
  width: 2px;
  height: calc(100% - 56px);
}

/* ==========================================================================
   12. Pricing Cards
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  position: relative;
  transition: all var(--duration-normal) var(--ease-out);
}

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

.pricing-card--popular {
  border-color: var(--accent);
  transform: scale(1.04);
  box-shadow: 0 0 40px var(--accent-glow);
  z-index: 2;
}

.pricing-card--popular:hover {
  transform: scale(1.04) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--text-inverse);
  font-size: var(--font-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 6px 20px;
  border-radius: var(--radius-full);
}

.pricing-card__name {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: var(--space-2);
}

.pricing-card__desc {
  font-size: var(--font-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-6);
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
}

.pricing-card__amount {
  font-size: var(--font-5xl);
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1;
}

.pricing-card__period {
  font-size: var(--font-sm);
  color: var(--text-muted);
}

.pricing-card__divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-6) 0;
}

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

.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: var(--font-sm);
  color: var(--text-body);
}

.pricing-card__features li::before {
  content: '\2713';
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-card__features li.disabled {
  color: var(--text-muted);
  text-decoration: line-through;
}

.pricing-card__features li.disabled::before {
  content: '\2715';
  color: var(--text-muted);
}

/* ==========================================================================
   13. FAQ Accordion
   ========================================================================== */
.faq-list {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6) 0;
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--text-heading);
  text-align: left;
  cursor: pointer;
  background: none;
  border: none;
  transition: color var(--duration-fast) ease;
}

.faq-item__question:hover {
  color: var(--accent);
}

.faq-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-xl);
  color: var(--text-muted);
  transition: transform var(--duration-normal) var(--ease-out);
}

.faq-item.open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out),
              padding var(--duration-slow) var(--ease-out);
}

.faq-item.open .faq-item__answer {
  max-height: 500px;
  padding-bottom: var(--space-6);
}

.faq-item__answer p {
  color: var(--text-body);
  font-size: var(--font-sm);
  line-height: 1.8;
}

/* ==========================================================================
   14. Forms
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-5);
}

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

.form-label--required::after {
  content: ' *';
  color: var(--error);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-heading);
  font-size: var(--font-sm);
  transition: border-color var(--duration-fast) ease,
              box-shadow var(--duration-fast) ease;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

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

.form-input:invalid:not(:placeholder-shown),
.form-input.error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px var(--error-light);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='%23666'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-select option {
  background: var(--bg-elevated);
  color: var(--text-heading);
}

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

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

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

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

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.form-checkbox span {
  font-size: var(--font-sm);
  color: var(--text-body);
}

/* ==========================================================================
   15. Footer
   ========================================================================== */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer__brand {
  max-width: 300px;
}

.footer__brand-name {
  font-size: var(--font-xl);
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer__brand-desc {
  font-size: var(--font-sm);
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-size: var(--font-lg);
  transition: all var(--duration-fast) ease;
}

.footer__social-link:hover {
  background: var(--accent);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

.footer__col-title {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-heading);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-5);
}

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

.footer__links a {
  font-size: var(--font-sm);
  color: var(--text-muted);
  transition: color var(--duration-fast) ease;
}

.footer__links a:hover {
  color: var(--text-heading);
}

.footer__newsletter {
  margin-top: var(--space-6);
}

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

.footer__newsletter-form input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-heading);
  font-size: var(--font-sm);
}

.footer__newsletter-form input:focus {
  outline: none;
  border-color: var(--accent);
}

.footer__newsletter-form button {
  padding: 10px 20px;
  background: var(--accent);
  color: var(--text-inverse);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-sm);
  transition: background var(--duration-fast) ease;
}

.footer__newsletter-form button:hover {
  background: var(--accent-hover);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
  font-size: var(--font-xs);
  color: var(--text-muted);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer__bottom-links a {
  color: var(--text-muted);
  font-size: var(--font-xs);
}

.footer__bottom-links a:hover {
  color: var(--text-heading);
}

/* ==========================================================================
   16. Trust Badges
   ========================================================================== */
.trust-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-8);
  padding: var(--space-10) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-sm);
  color: var(--text-muted);
}

.trust-badge__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  color: var(--accent);
  font-size: var(--font-lg);
}

.trust-badge__text {
  font-weight: 500;
}

/* ==========================================================================
   17. Statistics Counters
   ========================================================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.stat {
  text-align: center;
  padding: var(--space-8);
}

.stat__value {
  font-size: var(--font-5xl);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat__label {
  font-size: var(--font-sm);
  color: var(--text-muted);
  font-weight: 500;
}

.stat__divider {
  display: none;
  width: 1px;
  height: 60px;
  background: var(--border);
  align-self: center;
}

/* ==========================================================================
   18. Industry / Activity Grid Cards
   ========================================================================== */
.activity-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: transform var(--duration-normal) var(--ease-out);
}

.activity-card:hover {
  transform: scale(1.03);
}

.activity-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.activity-card:hover .activity-card__img {
  transform: scale(1.08);
}

.activity-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.85) 100%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-6);
}

.activity-card__name {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--text-heading);
}

.activity-card__count {
  font-size: var(--font-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* ==========================================================================
   19. Blog Post Preview Cards
   ========================================================================== */
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

.blog-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog-card__image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.blog-card__body {
  padding: var(--space-6);
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.blog-card__category {
  background: var(--accent-light);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-weight: 500;
}

.blog-card__title {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: var(--space-3);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__excerpt {
  font-size: var(--font-sm);
  color: var(--text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-4);
}

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

.blog-card__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.blog-card__author-name {
  font-size: var(--font-sm);
  font-weight: 500;
  color: var(--text-heading);
}

/* ==========================================================================
   20. Demo Request Form
   ========================================================================== */
.demo-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  max-width: 600px;
  margin: 0 auto;
}

.demo-form__title {
  font-size: var(--font-3xl);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--space-2);
}

.demo-form__subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-sm);
  margin-bottom: var(--space-8);
}

/* ==========================================================================
   21. Registration Cards (3 user types side by side)
   ========================================================================== */
.registration-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.registration-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

.registration-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.registration-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.registration-card__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  font-size: var(--font-3xl);
  margin: 0 auto var(--space-5);
}

.registration-card__title {
  font-size: var(--font-xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.registration-card__desc {
  font-size: var(--font-sm);
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   22. Sign-In Form (Centered Card with Social Auth)
   ========================================================================== */
.auth-container {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  padding-top: calc(var(--nav-height) + var(--space-8));
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  width: 100%;
  max-width: 440px;
}

.auth-card__title {
  font-size: var(--font-3xl);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--space-2);
}

.auth-card__subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-sm);
  margin-bottom: var(--space-8);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-6) 0;
  color: var(--text-muted);
  font-size: var(--font-xs);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.social-auth {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.social-auth__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  width: 100%;
  padding: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-heading);
  font-size: var(--font-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) ease;
}

.social-auth__btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.social-auth__btn img,
.social-auth__btn svg {
  width: 20px;
  height: 20px;
}

.auth-card__footer {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--font-sm);
  color: var(--text-muted);
}

.auth-card__footer a {
  color: var(--accent);
  font-weight: 500;
}

/* ==========================================================================
   23. Testimonial Cards
   ========================================================================== */
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
}

.testimonial-card__quote {
  font-size: var(--font-4xl);
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: var(--space-4);
  font-family: Georgia, serif;
}

.testimonial-card__text {
  font-size: var(--font-base);
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  font-style: italic;
}

.testimonial-card__stars {
  display: flex;
  gap: 2px;
  color: #fbbf24;
  font-size: var(--font-lg);
  margin-bottom: var(--space-5);
}

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

.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

.testimonial-card__name {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-heading);
}

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

/* ==========================================================================
   24. AI Chatbot Widget
   ========================================================================== */
.chatbot-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-2xl);
  cursor: pointer;
  z-index: 9999;
  box-shadow: 0 4px 20px var(--accent-glow);
  transition: all var(--duration-normal) var(--ease-out);
  border: none;
}

.chatbot-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px var(--accent-glow);
}

.chatbot-toggle.open {
  transform: rotate(45deg);
}

.chatbot-window {
  position: fixed;
  bottom: 100px;
  right: 24px;
  width: 380px;
  height: 520px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  z-index: 9998;
  display: none;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  animation: chatSlideUp var(--duration-normal) var(--ease-out);
}

.chatbot-window.open {
  display: flex;
}

@keyframes chatSlideUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

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

.chatbot-header__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-base);
  font-weight: 700;
}

.chatbot-header__name {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-heading);
}

.chatbot-header__status {
  font-size: var(--font-xs);
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 4px;
}

.chatbot-header__status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

.chatbot-header__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--duration-fast) ease;
  background: none;
  border: none;
}

.chatbot-header__close:hover {
  background: var(--bg-hover);
  color: var(--text-heading);
}

.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.chatbot-messages::-webkit-scrollbar {
  width: 4px;
}

.chatbot-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 2px;
}

.chat-message {
  max-width: 80%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--font-sm);
  line-height: 1.6;
  animation: msgFadeIn var(--duration-normal) var(--ease-out);
}

@keyframes msgFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.chat-message--bot {
  align-self: flex-start;
  background: var(--bg-elevated);
  color: var(--text-body);
  border-bottom-left-radius: var(--radius-sm);
}

.chat-message--user {
  align-self: flex-end;
  background: var(--accent);
  color: var(--text-inverse);
  border-bottom-right-radius: var(--radius-sm);
}

.chatbot-input {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.chatbot-input input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-heading);
  font-size: var(--font-sm);
}

.chatbot-input input:focus {
  outline: none;
  border-color: var(--accent);
}

.chatbot-input__send {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  transition: background var(--duration-fast) ease;
  flex-shrink: 0;
}

.chatbot-input__send:hover {
  background: var(--accent-hover);
}

/* ==========================================================================
   25. Breadcrumb Navigation
   ========================================================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  font-size: var(--font-sm);
  flex-wrap: wrap;
}

.breadcrumb__item {
  color: var(--text-muted);
  transition: color var(--duration-fast) ease;
}

.breadcrumb__item:hover {
  color: var(--text-heading);
}

.breadcrumb__item.active {
  color: var(--text-heading);
  font-weight: 500;
  pointer-events: none;
}

.breadcrumb__separator {
  color: var(--text-muted);
  font-size: var(--font-xs);
}

/* ==========================================================================
   26. Badge / Tag Components
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 10px;
  font-size: var(--font-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

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

.badge--success {
  background: var(--success-light);
  color: var(--success);
}

.badge--error {
  background: var(--error-light);
  color: var(--error);
}

.badge--neutral {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 12px;
  font-size: var(--font-xs);
  font-weight: 500;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-body);
  cursor: default;
  transition: all var(--duration-fast) ease;
}

.tag:hover {
  border-color: var(--border-light);
  color: var(--text-heading);
}

.tag--clickable {
  cursor: pointer;
}

.tag--active {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}

/* ==========================================================================
   27. Math Captcha Verification
   ========================================================================== */
.captcha-container {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.captcha-question {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--text-heading);
  white-space: nowrap;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  font-family: 'Courier New', monospace;
  letter-spacing: 0.05em;
  user-select: none;
}

.captcha-input {
  width: 80px;
  padding: var(--space-3);
  text-align: center;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-heading);
  font-size: var(--font-base);
  font-weight: 600;
}

.captcha-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.captcha-label {
  font-size: var(--font-xs);
  color: var(--text-muted);
}

/* ==========================================================================
   28. Back to Top Button
   ========================================================================== */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-body);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-lg);
  cursor: pointer;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--duration-normal) var(--ease-out);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

.back-to-top.with-chatbot {
  right: 96px;
}

/* ==========================================================================
   29. Animations & Transitions
   ========================================================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.animate-fade-in { animation: fadeIn 0.6s var(--ease-out) both; }
.animate-fade-in-up { animation: fadeInUp 0.6s var(--ease-out) both; }
.animate-fade-in-down { animation: fadeInDown 0.6s var(--ease-out) both; }
.animate-fade-in-left { animation: fadeInLeft 0.6s var(--ease-out) both; }
.animate-fade-in-right { animation: fadeInRight 0.6s var(--ease-out) both; }
.animate-scale-in { animation: scaleIn 0.5s var(--ease-out) both; }

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

[data-animate].in-view {
  opacity: 1;
  transform: translateY(0);
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-elevated) 25%,
    var(--bg-hover) 50%,
    var(--bg-elevated) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* Loading spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner--lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

/* ==========================================================================
   30. Utility Classes
   ========================================================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-heading { color: var(--text-heading); }
.text-body { color: var(--text-body); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-black { font-weight: 900; }

.uppercase { text-transform: uppercase; letter-spacing: 0.06em; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.pt-nav { padding-top: var(--nav-height); }

.w-full { width: 100%; }
.mx-auto { margin-left: auto; margin-right: auto; }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.overflow-hidden { overflow: hidden; }
.relative { position: relative; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.border { border: 1px solid var(--border); }
.border-b { border-bottom: 1px solid var(--border); }

.bg-primary { background: var(--bg-primary); }
.bg-card { background: var(--bg-card); }
.bg-elevated { background: var(--bg-elevated); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   31. Alert / Notification Banners
   ========================================================================== */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  border: 1px solid;
}

.alert--success {
  background: var(--success-light);
  border-color: rgba(34, 197, 94, 0.3);
  color: var(--success);
}

.alert--error {
  background: var(--error-light);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--error);
}

.alert--warning {
  background: rgba(234, 179, 8, 0.1);
  border-color: rgba(234, 179, 8, 0.3);
  color: var(--warning);
}

.alert--info {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
  color: var(--info);
}

.alert__icon {
  flex-shrink: 0;
  font-size: var(--font-lg);
  margin-top: 1px;
}

.alert__content {
  flex: 1;
}

.alert__title {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.alert__dismiss {
  flex-shrink: 0;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--duration-fast) ease;
  background: none;
  border: none;
  color: inherit;
}

.alert__dismiss:hover {
  opacity: 1;
}

/* ==========================================================================
   32. Modal / Dialog
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) ease,
              visibility var(--duration-normal) ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--duration-normal) var(--ease-out);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.modal__title {
  font-size: var(--font-xl);
  font-weight: 700;
}

.modal__close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--duration-fast) ease;
  background: none;
  border: none;
}

.modal__close:hover {
  background: var(--bg-elevated);
  color: var(--text-heading);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}

/* ==========================================================================
   33. Tooltip
   ========================================================================== */
.tooltip-wrapper {
  position: relative;
  display: inline-block;
}

.tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  color: var(--text-heading);
  font-size: var(--font-xs);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: all var(--duration-fast) ease;
  z-index: 100;
}

.tooltip-wrapper:hover .tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   34. Table
   ========================================================================== */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: var(--font-sm);
}

.table th {
  background: var(--bg-elevated);
  color: var(--text-heading);
  font-weight: 600;
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.table td {
  color: var(--text-body);
}

.table tbody tr {
  transition: background var(--duration-fast) ease;
}

.table tbody tr:hover {
  background: var(--bg-hover);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* ==========================================================================
   35. Responsive — Tablet (768px–1024px)
   ========================================================================== */
@media (max-width: 1024px) {
  :root {
    --font-7xl: 3.5rem;
    --font-6xl: 3rem;
    --font-5xl: 2.5rem;
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
    margin-left: auto;
    margin-right: auto;
  }

  .pricing-card--popular {
    transform: none;
  }

  .pricing-card--popular:hover {
    transform: translateY(-4px);
  }

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

  .footer__brand {
    grid-column: span 2;
    max-width: none;
  }

  .steps {
    flex-direction: column;
    gap: var(--space-6);
  }

  .step:not(:last-child)::after {
    top: auto;
    bottom: -18px;
    left: 28px;
    right: auto;
    width: 2px;
    height: 24px;
  }

  .registration-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* ==========================================================================
   36. Responsive — Mobile (<768px)
   ========================================================================== */
@media (max-width: 768px) {
  :root {
    --font-7xl: 2.5rem;
    --font-6xl: 2.25rem;
    --font-5xl: 2rem;
    --font-4xl: 1.75rem;
    --font-3xl: 1.5rem;
    --nav-height: 64px;
  }

  .container {
    padding: 0 var(--space-4);
  }

  .section {
    padding: var(--space-12) 0;
  }

  .section--lg {
    padding: var(--space-16) 0;
  }

  .section-header {
    margin-bottom: var(--space-10);
  }

  /* Navigation */
  .navbar__links {
    display: none;
  }

  .navbar__actions {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + var(--space-8));
    padding-bottom: var(--space-12);
  }

  .hero__content {
    padding: var(--space-8) 0;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  /* Grids */
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  /* Stats */
  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .stat {
    padding: var(--space-5);
  }

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

  /* Cards */
  .card {
    padding: var(--space-6);
  }

  .user-type-card {
    padding: var(--space-8);
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__brand {
    grid-column: 1;
  }

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

  .footer__bottom-links {
    justify-content: center;
  }

  /* Auth */
  .auth-card {
    padding: var(--space-8);
  }

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

  .demo-form {
    padding: var(--space-8);
  }

  /* Trust badges */
  .trust-badges {
    gap: var(--space-4);
  }

  /* Chatbot */
  .chatbot-window {
    right: 12px;
    left: 12px;
    width: auto;
    bottom: 90px;
    height: calc(100vh - 120px);
    max-height: 560px;
  }

  .chatbot-toggle {
    bottom: 16px;
    right: 16px;
    width: 52px;
    height: 52px;
  }

  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
  }

  .back-to-top.with-chatbot {
    right: 80px;
  }

  /* Captcha */
  .captcha-container {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .captcha-input {
    width: 100%;
  }

  /* Tabs scrollable */
  .tabs {
    margin-left: calc(-1 * var(--space-4));
    margin-right: calc(-1 * var(--space-4));
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
}

/* ==========================================================================
   37. Responsive — Small Mobile (<480px)
   ========================================================================== */
@media (max-width: 480px) {
  :root {
    --font-7xl: 2rem;
    --font-6xl: 1.875rem;
    --font-5xl: 1.75rem;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: var(--font-5xl);
  }

  .btn--lg {
    padding: 14px 28px;
    font-size: var(--font-sm);
  }

  .trust-badges {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
}

/* ==========================================================================
   38. Print Styles
   ========================================================================== */
@media print {
  body {
    background: #fff;
    color: #000;
  }

  .navbar,
  .chatbot-toggle,
  .chatbot-window,
  .back-to-top,
  .footer {
    display: none !important;
  }

  .section {
    padding: 1rem 0;
  }

  .card,
  .pricing-card,
  .blog-card {
    border: 1px solid #ccc;
    box-shadow: none;
    break-inside: avoid;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}

/* ==========================================================================
   39. Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .hero__bg::before,
  .hero__bg::after {
    animation: none;
  }
}

/* ==========================================================================
   40. Custom Scrollbar (Webkit)
   ========================================================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

html {
  scrollbar-width: thin;
  scrollbar-color: var(--border-light) var(--bg-primary);
}

/* ==========================================================================
   41. Focus Visible (Accessibility)
   ========================================================================== */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible),
input:focus:not(:focus-visible),
select:focus:not(:focus-visible),
textarea:focus:not(:focus-visible) {
  outline: none;
}

/* ==========================================================================
   42. Registration Cards & Grid Aliases
   ========================================================================== */
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.registration-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.registration-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
}

.registration-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.registration-card:hover::before {
  opacity: 1;
}

@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
}