/* Base styles, typography, and global elements */
:root {
  --brand: #0891b2;
  --brandMedium: #0284c7;
  --brandDark: #0369a1;
  --brandAccent: #06b6d4;
  --ink: #1a1a1a;
  --inkSoft: #666;
  --bg: #fff;
  --card: #f8f9fa;
  --border: #e0e0e0;
  --dark: #0a1929;
  /* Adding darkBlue variable for footer background */
  --darkBlue: #0a1929;
  --spacing-xs: .5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --radius: 12px;
  --transition: .25s cubic-bezier(0.4, 0, 0.2, 1);
  --anim-duration: 1s;
  --anim-duration-long: 1.2s;
  --anim-duration-fast: .6s;
  --anim-stagger-step: .18s;
}

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

html {
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

/* Optimize scrolling performance */
* {
  -webkit-tap-highlight-color: transparent;
}

/* GPU acceleration for smooth scrolling */
body {
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  perspective: 1000px;
  -webkit-perspective: 1000px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Improve touch targets on mobile */
@media (max-width: 768px) {

  a,
  button {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

body.menu-open {
  overflow: hidden;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: -.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

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

.text-balance {
  text-wrap: balance;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* Make images, svgs and videos responsive and prevent overflow on small screens */
@media (max-width: 768px) {

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

  /* Ensure embedded videos don't create horizontal scroll */
  .hero-video {
    max-width: 100%;
    width: 100%;
    height: auto;
  }
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  position: relative;
  overflow: hidden;
  min-height: 44px;
  /* Better touch target */
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .btn {
    padding: 0.875rem 2rem;
    font-size: 0.95rem;
    width: 100%;
    max-width: 300px;
  }
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left .5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

.btn-primary:focus,
.btn-primary:hover {
  background: var(--brandMedium);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 188, 212, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-color: #fff;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.btn-secondary:focus,
.btn-secondary:hover {
  background: #fff;
  color: var(--brand);
  border-color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.4);
}

section {
  padding: var(--spacing-xl) 0;
  scroll-margin-top: 120px;
}

@media (max-width: 768px) {
  section {
    padding: var(--spacing-lg) 0;
    scroll-margin-top: 80px;
  }
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  scroll-margin-top: 120px;
}

.gradient-divider {
  width: 80px;
  height: 5px;
  background: linear-gradient(90deg, var(--brand) 0, var(--brandMedium) 50%, var(--brandDark) 100%);
  margin: 0 auto var(--spacing-md);
  border-radius: 3px;
  scroll-margin-top: 120px;
}

.section-intro {
  font-size: 1.125rem;
  color: var(--inkSoft);
  line-height: 1.7;
}

/* Enhanced Animation Keyframes */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-40px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(60px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll-triggered animation classes */
.animate-on-scroll {
  opacity: 0;
  transition: opacity var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1),
    transform var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
}

/* Fade in from bottom */
.fade-in-up {
  opacity: 0;
  transform: translate3d(0, 50px, 0);
  will-change: opacity, transform;
  transition: opacity var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1),
    transform var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-up.visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  will-change: auto;
}

/* Fade in from left */
.fade-in-left {
  opacity: 0;
  transform: translate3d(-50px, 0, 0);
  will-change: opacity, transform;
  transition: opacity var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1),
    transform var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-left.visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  will-change: auto;
}

/* Fade in from right */
.fade-in-right {
  opacity: 0;
  transform: translate3d(50px, 0, 0);
  will-change: opacity, transform;
  transition: opacity var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1),
    transform var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-right.visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  will-change: auto;
}

/* Scale in animation */
.scale-in {
  opacity: 0;
  transform: translate3d(0, 0, 0) scale(0.85);
  will-change: opacity, transform;
  transition: opacity var(--anim-duration) cubic-bezier(0.34, 1.56, 0.64, 1),
    transform var(--anim-duration) cubic-bezier(0.34, 1.56, 0.64, 1);
}

.scale-in.visible {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
  will-change: auto;
}

/* Slide up with fade */
.slide-up {
  opacity: 0;
  transform: translate3d(0, 60px, 0);
  will-change: opacity, transform;
  transition: opacity var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1),
    transform var(--anim-duration) cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-up.visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  will-change: auto;
}

/* Section backgrounds load immediately - no animation on sections themselves */
/* .section-reveal class is used for JavaScript to detect sections, but backgrounds are always visible */

.card-animate {
  opacity: 0;
  transform: translate3d(0, 80px, 0) scale(0.95);
  will-change: opacity, transform;
  transition: opacity var(--anim-duration-long) cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform var(--anim-duration-long) cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transition-delay: var(--delay, 0s);
}

.section-reveal.visible .card-animate {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
  will-change: auto;
}

/* Staggered animation for grid items - sequential one at a time, floating up smoothly */
.services-grid .service-card:nth-child(1) {
  --delay: 0s;
}

.services-grid .service-card:nth-child(2) {
  --delay: 0.5s;
}

.services-grid .service-card:nth-child(3) {
  --delay: 1s;
}

/* Stagger item base styles */
.stagger-item {
  opacity: 0;
  transform: translate3d(0, 30px, 0);
  will-change: opacity, transform;
  transition: opacity var(--anim-duration) ease-out, transform var(--anim-duration) ease-out;
  transition-delay: var(--stagger-delay, 0s);
}

.stagger-item.visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  will-change: auto;
}