/* ==========================================================================
   Waving Knowledge - Corporate Website Styles
   IBM-Inspired Design Theme
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Slate & Emerald Theme */
  --color-primary: #2d3748;
  --color-primary-dark: #1a202c;
  --color-accent: #10b981;
  --color-accent-dark: #059669;
  --color-black: #111827;
  --color-dark-gray: #1f2937;
  --color-white: #ffffff;
  --color-off-white: #f9fafb;
  --color-light-accent: #ecfdf5;
  --color-gray: #6b7280;
  --color-light-gray: #d1d5db;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  --font-size-4xl: 40px;
  --font-size-5xl: 48px;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;

  /* Layout */
  --max-width: 1200px;
  --header-height: 72px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-family);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul, ol {
  list-style: none;
}

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

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-black);
}

h1 {
  font-size: var(--font-size-5xl);
  font-weight: 700;
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-sm);
}

.text-gray {
  color: var(--color-gray);
}

.text-center {
  text-align: center;
}

/* --------------------------------------------------------------------------
   Layout Components
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-3xl) 0;
}

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

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

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  max-width: 700px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: 4px;
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border: 2px solid var(--color-accent);
}

.btn--primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-white);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn--white {
  background-color: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-white);
}

.btn--white:hover {
  background-color: transparent;
  color: var(--color-white);
}

.btn-group {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-white);
  z-index: 1000;
  transition: box-shadow var(--transition-normal);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-black);
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.header__logo img {
  height: 48px;
  width: auto;
}

.header__logo:hover {
  color: var(--color-black);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav__link {
  color: var(--color-black);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
}

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

.nav__cta {
  margin-left: var(--spacing-sm);
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-xs);
  z-index: 1001;
}

.nav-toggle__bar {
  width: 24px;
  height: 2px;
  background-color: var(--color-black);
  transition: all var(--transition-fast);
}

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

.nav-toggle--active .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

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

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding-top: calc(var(--header-height) + var(--spacing-xl));
  padding-bottom: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-light-accent) 100%);
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero__content {
  max-width: 600px;
}

.hero__title {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-5xl);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-gray);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.hero__cta {
  margin-top: var(--spacing-lg);
}

.hero__image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image img {
  max-width: 100%;
  height: auto;
  animation: heroFloat 6s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

/* Services uses 3 columns for 6 cards */
.services .card-grid {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.card__icon {
  width: 56px;
  height: 56px;
  background-color: var(--color-light-accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.card__icon svg {
  width: 28px;
  height: 28px;
}

.card__title {
  margin-bottom: var(--spacing-sm);
}

.card__text {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Services Section
   -------------------------------------------------------------------------- */
.services {
  background-color: var(--color-off-white);
}

.services__cta {
  text-align: center;
  margin-top: var(--spacing-xl);
}

/* Technology Stack */
.tech-stack {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.tech-stack h3 {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.tech-stack__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-sm);
}

.tech-item {
  padding: var(--spacing-sm);
  background-color: var(--color-off-white);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.tech-item:hover {
  background-color: var(--color-light-accent);
  transform: translateY(-2px);
}

.tech-item__name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  margin-bottom: 4px;
}

.tech-item__desc {
  font-size: 12px;
  color: var(--color-gray);
}

/* Services Intro */
.services-intro {
  max-width: 900px;
  margin: 0 auto var(--spacing-xl);
  text-align: center;
}

.services-intro p {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  line-height: 1.8;
}

/* Services Explainer - What Are AI Agents */
.services-explainer {
  background-color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: 8px;
  margin-bottom: var(--spacing-xl);
}

.services-explainer h3 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.explainer-image {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.explainer-image img {
  max-width: 400px;
  width: 100%;
  height: auto;
}

.explainer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.explainer-item {
  text-align: center;
}

.explainer-icon {
  width: 64px;
  height: 64px;
  background-color: var(--color-light-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-sm);
  color: var(--color-accent);
}

.explainer-icon svg {
  width: 32px;
  height: 32px;
}

.explainer-item h4 {
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-lg);
}

.explainer-item p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-bottom: 0;
}

/* Services Cards Title */
.services-cards-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* Detailed Card Variant */
.card--detailed {
  display: flex;
  flex-direction: column;
}

.card__features {
  margin-top: auto;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-off-white);
}

.card__features li {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

/* Services Process */
.services-process {
  background-color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: 8px;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.services-process h3 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(to right, var(--color-accent), var(--color-light-accent));
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.process-step__number {
  width: 56px;
  height: 56px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0 auto var(--spacing-sm);
}

.process-step__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.process-step__text {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-bottom: 0;
}

/* Services Use Cases */
.services-usecases {
  margin-bottom: var(--spacing-lg);
}

.services-usecases h3 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.usecase {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  border-left: 4px solid var(--color-accent);
}

.usecase h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
}

.usecase p {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Products Section
   -------------------------------------------------------------------------- */
.products {
  background-color: var(--color-white);
}

.product-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.product-header__logo {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.product-header__tagline {
  font-size: var(--font-size-xl);
  color: var(--color-black);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.product-header__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  max-width: 700px;
  margin: 0 auto;
}

/* Product Mockup */
.product-mockup {
  display: flex;
  justify-content: center;
  margin: var(--spacing-xl) 0;
}

.product-mockup img {
  max-width: 900px;
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}

/* Stats Row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background-color: var(--color-light-accent);
  border-radius: 8px;
}

.stat {
  text-align: center;
}

.stat__value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.stat__label {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
}

/* Features */
.product-features {
  margin-bottom: var(--spacing-xl);
}

.product-features__title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* Industries */
.product-industries {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.product-industries__title {
  margin-bottom: var(--spacing-md);
}

.industry-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.industry-tag {
  background-color: var(--color-off-white);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-black);
}

/* Product CTAs */
.product-cta {
  text-align: center;
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about {
  background-color: var(--color-off-white);
}

.about__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.about__text p {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  margin-bottom: var(--spacing-md);
}

.about__values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.value-card {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.value-card__icon {
  width: 64px;
  height: 64px;
  background-color: var(--color-light-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-sm);
  color: var(--color-accent);
}

.value-card__icon svg {
  width: 32px;
  height: 32px;
}

.value-card__title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.value-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  margin-bottom: 0;
}

/* Office Location */
.office-location {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  margin-top: var(--spacing-xl);
  background-color: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.office-location__image {
  height: 100%;
}

.office-location__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 300px;
}

.office-location__info {
  padding: var(--spacing-xl);
}

.office-location__info h3 {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.office-location__address {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  color: var(--color-gray);
  line-height: 1.8;
}

.office-location__address svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 4px;
}

.office-location__address strong {
  color: var(--color-black);
  font-size: var(--font-size-lg);
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.contact .section-header h2,
.contact .section-header p {
  color: var(--color-white);
}

.contact__simple {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.contact__simple p {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
}

.contact__methods {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.contact__method {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.contact__method:hover {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.contact__chat-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

@media (min-width: 768px) {
  .contact__methods {
    flex-direction: row;
    justify-content: center;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--color-dark-gray);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  color: var(--color-white);
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.footer__logo img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer__tagline {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.footer__column h4 {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer__links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Responsive Styles
   -------------------------------------------------------------------------- */

/* Tablet */
@media (max-width: 991px) {
  :root {
    --font-size-5xl: 40px;
    --font-size-4xl: 32px;
    --font-size-3xl: 28px;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__image {
    order: -1;
    margin-bottom: var(--spacing-md);
  }

  .hero__image img {
    max-width: 400px;
  }

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

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

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

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

  .explainer-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .process-steps::before {
    display: none;
  }

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

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

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

  .office-location {
    grid-template-columns: 1fr;
  }

  .office-location__image img {
    min-height: 250px;
  }

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

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

/* Mobile */
@media (max-width: 767px) {
  :root {
    --font-size-5xl: 32px;
    --font-size-4xl: 28px;
    --font-size-3xl: 24px;
    --spacing-3xl: 64px;
  }

  /* Header Mobile */
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--color-white);
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-normal);
  }

  .nav--open {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .nav__link {
    font-size: var(--font-size-lg);
  }

  .nav__cta {
    margin-left: 0;
  }

  /* Overlay */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
  }

  .nav-overlay--visible {
    opacity: 1;
    visibility: visible;
  }

  /* Hero Mobile */
  .hero {
    min-height: auto;
    padding-top: calc(var(--header-height) + var(--spacing-lg));
    padding-bottom: var(--spacing-lg);
  }

  .hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__subtitle {
    font-size: var(--font-size-lg);
  }

  .hero__image {
    order: -1;
    margin-bottom: var(--spacing-md);
  }

  .hero__image img {
    max-width: 280px;
  }

  .btn-group {
    flex-direction: column;
  }

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

  /* Cards Mobile */
  .card-grid,
  .services .card-grid {
    grid-template-columns: 1fr;
  }

  /* Stats Mobile */
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat__value {
    font-size: var(--font-size-2xl);
  }

  /* Services Mobile */
  .services-explainer {
    padding: var(--spacing-md);
  }

  .explainer-image img {
    max-width: 280px;
  }

  .explainer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

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

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

  .services-process {
    padding: var(--spacing-md);
  }

  /* About Mobile */
  .about__values {
    grid-template-columns: 1fr;
  }

  .office-location__info {
    padding: var(--spacing-lg);
    text-align: center;
  }

  .office-location__address {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .office-location__info .btn {
    width: 100%;
  }

  /* Footer Mobile */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .footer__brand {
    max-width: none;
    text-align: center;
  }

  .footer__logo {
    justify-content: center;
  }

  .footer__column {
    text-align: center;
  }

  .footer__links {
    align-items: center;
  }
}

/* Small Mobile */
@media (max-width: 374px) {
  .stats-row {
    grid-template-columns: 1fr;
  }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.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;
}

/* Scroll Reveal Animation */
/* Scroll Reveal - with no-JS fallback */
.reveal {
  opacity: 1;
  transform: translateY(0);
}

/* Only apply animation if JS is loaded */
.js-loaded .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-loaded .reveal--visible,
.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}