/* ================================================================
   Agent.AI — English Static Site
   Design System & Global Styles
   ================================================================ */

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

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #050505;
  --color-bg-alt: #0a0a0a;
  --color-bg-card: #111111;
  --color-bg-elevated: #1a1a1a;
  --color-text: #ffffff;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);

  /* Accent Colors */
  --color-blue: #3b82f6;
  --color-blue-glow: rgba(59, 130, 246, 0.15);
  --color-purple: #8b5cf6;
  --color-purple-glow: rgba(139, 92, 246, 0.15);
  --color-green: #22c55e;
  --color-yellow: #eab308;
  --color-pink: #ec4899;

  /* Gradients */
  --gradient-accent: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-accent-hover: linear-gradient(135deg, #60a5fa, #a78bfa);
  --gradient-hero-bg: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.08) 0%, #050505 60%);
  --gradient-glow: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;

  /* Spacing */
  --section-py: 120px;
  --section-px: 24px;
  --max-width: 1200px;
  --max-width-narrow: 800px;

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

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

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

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

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  line-height: 1.7;
}

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

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

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--section-px);
}

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

.section {
  padding: var(--section-py) 0;
  position: relative;
}

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

.section--border-top {
  border-top: 1px solid var(--color-border);
}

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

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--section-px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 800;
}

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

.header__nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
  position: relative;
}

.header__nav a:hover,
.header__nav a.active {
  color: var(--color-text);
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: var(--transition-base);
  border-radius: 1px;
}

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

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--gradient-accent);
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

.header__cta:hover {
  background: var(--gradient-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.3);
}

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

.header__mobile-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition-base);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
}

.btn--lg {
  padding: 16px 40px;
  font-size: 1.075rem;
}

.btn--md {
  padding: 12px 28px;
  font-size: 0.95rem;
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

.btn--primary {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.25);
}

.btn--primary:hover {
  background: var(--gradient-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.4);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.05);
  color: white;
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-hover);
}

.btn--white {
  background: white;
  color: #0a0a0a;
}

.btn--white:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
}

.btn--outline-blue {
  background: transparent;
  color: var(--color-blue);
  border: 1px solid var(--color-blue);
}

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

/* --- Cards --- */
.card {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition-base);
}

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

.card__image {
  width: 100%;
  height: auto;
  opacity: 1;
  display: block;
  transition: var(--transition-slow);
}

.card:hover .card__image {
  opacity: 1;
  transform: scale(1.03);
}

.card__image-wrapper {
  overflow: hidden;
  position: relative;
  border-radius: var(--radius-xl);
  isolation: isolate;
  transform: translateZ(0);
}

.card__body {
  padding: 24px;
}

.card__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.card__desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- Badge / Tag --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge--blue {
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.badge--purple {
  background: rgba(139, 92, 246, 0.12);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.badge--yellow {
  background: rgba(234, 179, 8, 0.12);
  color: #facc15;
  border: 1px solid rgba(234, 179, 8, 0.25);
}

.badge--green {
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.25);
}

/* --- Agent Pill (Product page agent buttons) --- */
.agent-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  cursor: default;
}

.agent-pill--active {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: #c4b5fd;
}

.agent-pill--active:hover {
  background: var(--color-purple);
  color: white;
  border-color: var(--color-purple);
}

.agent-pill--passive {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: #93c5fd;
}

.agent-pill--passive:hover {
  background: var(--color-blue);
  color: white;
  border-color: var(--color-blue);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  padding-top: 180px;
  padding-bottom: var(--section-py);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero-bg);
  z-index: -1;
}

.hero__title {
  max-width: 900px;
  margin: 0 auto 24px;
}

.hero__subtitle {
  max-width: 640px;
  margin: 0 auto 48px;
  font-size: 1.2rem;
}

.hero__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__media {
  max-width: 100%;
  margin: 56px auto 0;
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  height: max-content;
  isolation: isolate;
  transform: translateZ(0);
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
  transition: var(--transition-slow);
}

.hero__media:hover img {
  opacity: 0.4;
}

.hero__media-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.hero__play-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  transition: var(--transition-base);
}

.hero__media:hover .hero__play-btn {
  transform: scale(1.1);
  background: rgba(255, 255, 255, 0.15);
}

/* --- Grid Layouts --- */
.grid {
  display: grid;
  gap: 24px;
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* --- Stats / Metrics --- */
.stat {
  text-align: center;
  padding: 32px;
}

.stat__value {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat__label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

/* --- Media with Metric Overlay --- */
.media-showcase {
  position: relative;
  width: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  height: max-content;
  isolation: isolate;
  transform: translateZ(0);
}

.media-showcase img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
  transition: var(--transition-slow);
}

.media-showcase:hover img {
  opacity: 0.8;
}

.media-showcase__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-showcase__metric {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(12px);
  padding: 24px 40px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  text-align: center;
}

.media-showcase__metric-value {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: white;
  margin-bottom: 4px;
}

.media-showcase__metric-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 700;
}

/* --- Split Section (Image + Text) --- */
.split {
  display: flex;
  align-items: center;
  gap: 64px;
}

.split--reverse {
  flex-direction: row-reverse;
}

.split__content {
  flex: 1;
}

.split__media {
  flex: 1;
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  height: max-content;
  align-self: center;
  isolation: isolate;
  transform: translateZ(0);
}

.split__media img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 1;
  transition: var(--transition-slow);
}

.split__media:hover img {
  transform: scale(1.05);
}

/* --- Logo Bar / Social Proof --- */
.logo-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 48px;
  padding: 40px 0;
  opacity: 0.5;
}

.logo-bar img {
  height: 28px;
  filter: brightness(0) invert(1);
  opacity: 0.6;
  transition: var(--transition-base);
}

.logo-bar img:hover {
  opacity: 1;
}

/* --- Footer --- */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 80px 0 40px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer__brand p {
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 280px;
}

.footer__heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

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

.footer__links a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

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

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer__social {
  display: flex;
  gap: 16px;
}

.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: var(--transition-base);
}

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

/* --- Pricing Cards --- */
.pricing-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: var(--transition-base);
}

.pricing-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
}

.pricing-card--featured {
  background: #1a1500;
  border: 2px solid var(--color-yellow);
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(234, 179, 8, 0.1);
}

.pricing-card--featured:hover {
  transform: translateY(-12px);
}

.pricing-card__popular {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--color-yellow);
  color: #0a0a0a;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 0 var(--radius-xl) 0 var(--radius-lg);
}

.pricing-card__name {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.pricing-card__price {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  margin: 16px 0;
}

.pricing-card__price span {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-card__features {
  flex: 1;
  margin: 24px 0 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.pricing-card__features li::before {
  content: '✓';
  color: var(--color-green);
  font-weight: 700;
  font-size: 0.85rem;
}

/* --- Contact Form --- */
.contact-form {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 14px 18px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition-base);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px var(--color-blue-glow);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.1rem;
}

.section-header__line {
  width: 64px;
  height: 3px;
  background: var(--gradient-accent);
  margin: 24px auto 0;
  border-radius: 2px;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* --- Skill Tag --- */
.skill-tag {
  display: inline-block;
  padding: 8px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  transition: var(--transition-base);
}

.skill-tag:hover {
  border-color: var(--color-border-hover);
  color: white;
}

/* --- Step / Process --- */
.step-badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  border: 1px solid;
  margin-bottom: 16px;
}

.step-badge--blue {
  color: var(--color-blue);
  border-color: rgba(59, 130, 246, 0.3);
}

.step-badge--purple {
  color: var(--color-purple);
  border-color: rgba(139, 92, 246, 0.3);
}

.step-badge--pink {
  color: var(--color-pink);
  border-color: rgba(236, 72, 153, 0.3);
}

/* --- FAQ Section --- */
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 24px 0;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  padding: 0;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-text-muted);
  transition: var(--transition-base);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.open .faq-question::after {
  content: '−';
  color: var(--color-blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding-top: 16px;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Contact Info Bar --- */
.contact-bar {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 24px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  padding: 20px 40px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
}

.contact-bar__item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.contact-bar__item:hover {
  color: white;
}

.contact-bar__item i {
  color: var(--color-blue);
}

.contact-bar__divider {
  width: 1px;
  height: 20px;
  background: var(--color-border);
}

/* ================================================================
   Responsive Design
   ================================================================ */

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

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

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

  .split--reverse {
    flex-direction: column;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  :root {
    --section-py: 64px;
    --section-px: 16px;
  }

  .hero {
    padding-top: 140px;
  }

  .header__nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(5, 5, 5, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
  }

  .header__nav.open {
    display: flex;
  }

  .header__nav a {
    font-size: 1.2rem;
  }

  .header__mobile-btn {
    display: flex;
  }

  .header__cta-desktop {
    display: none;
  }

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

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

  .stat__value {
    font-size: 2.5rem;
  }

  .contact-bar {
    flex-direction: column;
    border-radius: var(--radius-xl);
    padding: 24px;
  }

  .contact-bar__divider {
    display: none;
  }

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

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

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

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

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

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .hero__subtitle {
    font-size: 1rem;
  }

  .btn--lg {
    padding: 14px 32px;
    font-size: 0.95rem;
  }
}