:root {
  /* Light mode colors */
  --primary-50: #f0f5ff;
  --primary-100: #e0e7ff;
  --primary-200: #c7d2fe;
  --primary-300: #a5b4fc;
  --primary-400: #818cf8;
  --primary-500: #6366f1;
  --primary-600: #4f46e5;
  --primary-700: #4338ca;
  --primary-800: #3730a3;
  --primary-900: #312e81;

  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  --accent-500: #fd7e14;
  --accent-400: #ffc107;

  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-600);
  --text-muted: var(--neutral-500);
  --text-inverse: #ffffff;

  --bg-primary: #ffffff;
  --bg-secondary: var(--neutral-50);
  --bg-alt: var(--neutral-100);
  --bg-card: #ffffff;
  --bg-header: rgba(255, 255, 255, 0.98);
  --bg-code: var(--neutral-100);

  --border-light: var(--neutral-200);
  --border-medium: var(--neutral-300);

  --shadow-color: rgba(0, 0, 0, 0.1);
  --shadow-color-heavy: rgba(0, 0, 0, 0.25);

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  --header-height: 5rem;
  --container-max: 1280px;
  --container-narrow: 1024px;
}

[data-theme="dark"] {
  --primary-50: #1e1b4b;
  --primary-100: #2e2a6b;
  --primary-200: #3f3a8b;
  --primary-300: #4f4aab;
  --primary-400: #605acb;
  --primary-500: #706aeb;
  --primary-600: #818cf8;
  --primary-700: #94a3fb;
  --primary-800: #a7b9fd;
  --primary-900: #bacffe;

  --neutral-50: #0f172a;
  --neutral-100: #1e293b;
  --neutral-200: #334155;
  --neutral-300: #475569;
  --neutral-400: #64748b;
  --neutral-500: #94a3b8;
  --neutral-600: #cbd5e1;
  --neutral-700: #e2e8f0;
  --neutral-800: #f1f5f9;
  --neutral-900: #f8fafc;

  --accent-500: #ffb347;
  --accent-400: #ffc75f;

  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-700);
  --text-muted: var(--neutral-600);
  --text-inverse: #0f172a;

  --bg-primary: #0f172a;
  --bg-secondary: #1a2436;
  --bg-alt: #1e293b;
  --bg-card: #1e293b;
  --bg-header: rgba(15, 23, 42, 0.98);
  --bg-code: #1e293b;

  --border-light: #334155;
  --border-medium: #475569;

  --shadow-color: rgba(0, 0, 0, 0.3);
  --shadow-color-heavy: rgba(0, 0, 0, 0.5);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

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

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

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

ul,
ol {
  list-style: none;
}

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

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-light);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.navbar-brand img {
  height: 2.5rem;
  width: auto;
  filter: var(--logo-filter, none);
}

.navbar-menu {
  display: flex;
  align-items: center;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 1rem;
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-600);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-600), var(--primary-400));
}

.nav-cta {
  margin-left: var(--space-sm);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-light);
}

.theme-toggle:hover {
  background: var(--primary-600);
  color: white;
  transform: translateY(-2px);
}

.mobile-menu-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  border-radius: var(--radius-md);
  position: relative;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

.mobile-menu-toggle span {
  position: absolute;
  left: 0.625rem;
  width: 1.25rem;
  height: 2px;
  background-color: white;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.mobile-menu-toggle span:nth-child(1) {
  top: 0.75rem;
}
.mobile-menu-toggle span:nth-child(2) {
  top: 1.1875rem;
}
.mobile-menu-toggle span:nth-child(3) {
  top: 1.625rem;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 1.1875rem;
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 1.1875rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  color: white;
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-600);
  border: 2px solid var(--primary-600);
}

.btn-secondary:hover {
  background: var(--primary-600);
  color: white;
  border-color: transparent;
  transform: translateY(-2px);
}

.btn-light {
  background: var(--accent-500);
  color: var(--neutral-900);
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
}

.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.3);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.badge {
  display: inline-block;
  background: var(--primary-100);
  color: var(--primary-700);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--primary-200);
  margin-bottom: var(--space-md);
}

.badge-primary {
  background: var(--primary-100);
  color: var(--primary-700);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}

.hero {
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  background: linear-gradient(
    135deg,
    var(--neutral-50) 0%,
    var(--bg-primary) 50%,
    var(--neutral-50) 100%
  );
  position: relative;
  overflow: hidden;
  transition: background var(--transition-base);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at 20% 50%,
      rgba(79, 70, 229, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 80%,
      rgba(253, 126, 20, 0.05) 0%,
      transparent 50%
    );
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  position: relative;
}

.hero-content {
  max-width: 40rem;
}

.hero-text {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin: var(--space-lg) 0 var(--space-xl);
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  padding: var(--space-lg) 0;
}

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

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.hero-card {
  background: var(--bg-card);
  border-radius: var(--radius-3xl);
  padding: var(--space-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-xl);
  transition:
    background var(--transition-base),
    border-color var(--transition-base);
}

.hero-card-icon {
  font-size: 2.5rem;
  color: var(--primary-600);
  margin-bottom: var(--space-md);
}

.hero-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.hero-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tech-pill {
  background: var(--neutral-100);
  color: var(--neutral-700);
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  border: 1px solid var(--border-light);
}

.clients-section {
  padding: var(--space-2xl) 0;
}

.clients-label {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-xl);
}

.clients-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-3xl);
  flex-wrap: wrap;
  opacity: 0.7;
  filter: grayscale(1);
}

.client-item {
  height: 2.5rem;
  display: flex;
  align-items: center;
}

.client-item img {
  max-height: 100%;
  width: auto;
  filter: var(--client-logo-filter, none);
}

.section-header {
  text-align: center;
  max-width: 48rem;
  margin: 0 auto var(--space-3xl);
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.section-lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.services-section,
.process-section,
.testimonials-section {
  padding: var(--space-3xl) 0;
}

.services-section {
  background: var(--bg-secondary);
}

.services-grid,
.process-grid,
.testimonials-grid,
.tech-grid,
.case-studies-grid {
  display: grid;
  gap: var(--space-xl);
}

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

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

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

.tech-grid {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.case-studies-grid {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-2xl);
}

.service-card,
.tech-card,
.case-card {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: var(--space-xl);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.service-card:hover,
.tech-card:hover,
.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--primary-300);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  background: linear-gradient(
    135deg,
    rgba(79, 70, 229, 0.1),
    rgba(99, 102, 241, 0.1)
  );
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-lg);
}

.card-icon i {
  font-size: 1.75rem;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.service-card h3,
.tech-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.service-card p,
.tech-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  flex-grow: 1;
}

.card-tags {
  margin-top: auto;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--primary-600);
  font-weight: 600;
  font-size: 0.9375rem;
  margin-top: var(--space-md);
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: var(--space-sm);
}

.services-footer {
  text-align: center;
  margin-top: var(--space-2xl);
}

.process-step {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: var(--space-xl);
  border: 1px solid var(--border-light);
  position: relative;
}

.step-number {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.3;
  line-height: 1;
  margin-bottom: var(--space-md);
}

.process-step h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.process-step p {
  color: var(--text-secondary);
}

.testimonial-card {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: var(--space-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
}

.testimonial-quote {
  font-size: 4rem;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-family: serif;
  margin-bottom: var(--space-xs);
}

.testimonial-text {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  font-style: italic;
}

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

.author-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  background: var(--primary-100);
  color: var(--primary-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: 600;
  font-style: normal;
  color: var(--text-primary);
}

.author-company {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.testimonials-footer {
  text-align: center;
  margin-top: var(--space-2xl);
}

.page-header {
  padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-xl);
  background: var(--bg-secondary);
}

.page-header-content {
  text-align: center;
  max-width: 48rem;
  margin: 0 auto;
}

.page-header h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.page-header-text {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.filter-section {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
  margin: var(--space-2xl) 0;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 0.6rem 1.5rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--primary-600);
  color: white;
  border-color: var(--primary-600);
}

.case-badge {
  margin-bottom: var(--space-md);
}

.case-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.case-summary {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  flex-grow: 1;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.stat-badge {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 0.25rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.case-metrics {
  display: flex;
  gap: var(--space-xl);
  border-top: 1px solid var(--border-light);
  padding-top: var(--space-lg);
  margin-top: auto;
}

.metric {
  display: flex;
  flex-direction: column;
}

.metric-value {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--primary-600);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.testimonials-alt {
  background: var(--bg-secondary);
}

.client-quote {
  background: var(--bg-card);
  border-radius: var(--radius-3xl);
  padding: var(--space-xl);
  border-left: 6px solid var(--primary-600);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-lg);
}

.client-quote:last-child {
  margin-bottom: 0;
}

.quote-icon {
  font-size: 2rem;
  color: var(--primary-600);
  margin-bottom: var(--space-sm);
}

.quote-text {
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
  font-style: italic;
}

.quote-author {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

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

.cta-card {
  background: linear-gradient(135deg, var(--accent-500), var(--primary-700));
  color: white;
  border-radius: var(--radius-3xl);
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
}

.cta-gradient {
  background: linear-gradient(135deg, var(--accent-500), var(--primary-800));
}

.cta-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: white;
}

.cta-text {
  font-size: 1.125rem;
  margin-bottom: var(--space-xl);
  opacity: 0.9;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.tech-section {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--border-light);
}

.tech-section:last-of-type {
  border-bottom: none;
}

.tech-category-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}

.category-icon {
  font-size: 2rem;
  color: var(--primary-600);
}

.tech-category-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
}

.tech-card {
  background: var(--bg-secondary);
}

.tech-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.tech-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tech-tag {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.certifications-section {
  padding: var(--space-3xl) 0;
  background: var(--bg-secondary);
}

.certifications-content {
  max-width: 48rem;
  margin: 0 auto;
  text-align: center;
}

.certifications-content h2 {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.certifications-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.certification-badges {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.cert-badge {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  color: white;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
}

.contact-section {
  padding: var(--space-3xl) 0;
  background: var(--bg-secondary);
}

.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius-3xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-xl);
  transition: background var(--transition-base);
}

.contact-form {
  max-width: 42rem;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.required {
  color: var(--accent-500);
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-fast);
  background: var(--bg-primary);
  color: var(--text-primary);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

.form-error {
  color: #dc2626;
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

.btn-submit {
  width: 100%;
  margin-top: var(--space-md);
}

.form-footer {
  text-align: center;
  margin-top: var(--space-lg);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.form-footer a {
  color: var(--text-primary);
  text-decoration: underline;
}

.site-footer {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: var(--space-3xl) 0 var(--space-xl);
  border-radius: var(--radius-3xl) var(--radius-3xl) 0 0;
  margin-top: var(--space-3xl);
  transition: background var(--transition-base);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-brand img {
  height: 3.5rem;
  width: 5rem;
  margin-bottom: var(--space-md);
}

.footer-tagline {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: white;
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  transform: translateY(-2px);
}

.footer-heading {
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.footer-links ul li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-contact address {
  font-style: normal;
  color: var(--neutral-400);
}

.footer-contact p {
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-primary);
}

.footer-contact i {
  color: var(--primary-400);
  width: 1.25rem;
}

.footer-contact a {
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.footer-contact a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.footer-legal {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.footer-legal a {
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: white;
}

.separator {
  color: var(--neutral-600);
}

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

.animate-fade-in {
  animation: fadeInUp 0.6s ease forwards;
}

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

@media (max-width: 768px) {
  :root {
    --header-height: 4rem;
    --space-3xl: 3rem;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .navbar-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-card);
    padding: var(--space-xl);
    border-bottom: 1px solid var(--border-light);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

  .navbar-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .navbar-nav {
    flex-direction: column;
    gap: var(--space-md);
  }

  .nav-link {
    display: block;
    padding: var(--space-sm) 0;
    width: 100%;
    text-align: center;
  }

  .nav-cta {
    margin: var(--space-md) 0 0;
    width: 100%;
  }

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

  .hero-stats {
    justify-content: space-between;
  }

  .hero-buttons {
    flex-direction: column;
  }

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

  .clients-grid {
    gap: var(--space-xl);
  }

  .services-grid,
  .process-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

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

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

  .filter-section {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: var(--space-xs) 0;
    justify-content: flex-start;
  }

  .filter-btn {
    flex-shrink: 0;
  }

  .case-metrics {
    flex-wrap: wrap;
  }

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

@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero-stats {
    flex-wrap: wrap;
  }

  .stat-item {
    flex: 1 1 auto;
  }

  .certification-badges {
    flex-direction: column;
    align-items: center;
  }

  .cert-badge {
    width: fit-content;
  }
}