/* ============================================================
   YUGOW INFOTECH - Premium IT Company Website Stylesheet
   ============================================================
   Color Palette:
     Primary White:      #FFFFFF
     Accent Blue:        #2563EB
     Secondary Sky Blue: #0EA5E9
   ============================================================ */

/* ----------------------------------------------------------
   1. CSS Custom Properties
   ---------------------------------------------------------- */
:root {
  /* Colors */
  --clr-primary: #FFFFFF;
  --clr-primary-light: #F8FAFC;
  --clr-primary-lighter: #F1F5F9;
  --clr-accent: #2563EB;
  --clr-accent-dark: #1D4ED8;
  --clr-accent-glow: rgba(37, 99, 235, 0.35);
  --clr-blue: #0EA5E9;
  --clr-blue-dark: #0284C7;
  --clr-blue-glow: rgba(14, 165, 233, 0.3);
  --clr-white: #1E293B;
  --clr-gray-100: #F1F5F9;
  --clr-gray-200: #E2E8F0;
  --clr-gray-300: #CBD5E1;
  --clr-gray-400: #94A3B8;
  --clr-gray-500: #64748B;
  --clr-gray-600: #475569;
  --clr-text: #334155;
  --clr-text-muted: #64748B;
  --clr-body-bg: #FFFFFF;
  --clr-card-bg: rgba(255, 255, 255, 0.7);
  --clr-card-border: rgba(0, 0, 0, 0.08);
  --clr-overlay: rgba(255, 255, 255, 0.75);

  /* Footer-specific dark colors (footer stays dark) */
  --clr-footer-bg: #0F172A;
  --clr-footer-text: #E2E8F0;
  --clr-footer-muted: #94A3B8;
  --clr-footer-border: rgba(148, 163, 184, 0.12);
  --clr-footer-heading: #F8FAFC;

  /* Typography */
  --ff-heading: 'Poppins', sans-serif;
  --ff-body: 'Open Sans', sans-serif;
  --fs-h1: clamp(2.25rem, 5vw, 4rem);
  --fs-h2: clamp(1.75rem, 4vw, 3rem);
  --fs-h3: clamp(1.25rem, 2.5vw, 1.75rem);
  --fs-h4: clamp(1.1rem, 2vw, 1.35rem);
  --fs-body: clamp(0.95rem, 1.2vw, 1.1rem);
  --fs-small: 0.875rem;

  /* Spacing */
  --section-pad: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 4rem);
  --container-max: 1280px;

  /* Transitions */
  --tr-fast: 0.2s ease;
  --tr-base: 0.35s ease;
  --tr-slow: 0.6s ease;
  --tr-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-glow-accent: 0 8px 32px rgba(37, 99, 235, 0.2);
  --shadow-glow-blue: 0 8px 32px rgba(14, 165, 233, 0.2);

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 50%;

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-blur: 16px;
}

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

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

body {
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  color: var(--clr-text);
  background-color: var(--clr-body-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--tr-base), color var(--tr-base);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--clr-white);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p { margin-bottom: 1rem; }

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

a:hover { color: var(--clr-blue); }

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

ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem);
}

.section-title {
  text-align: center;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--clr-text-muted);
  max-width: 640px;
  margin: 0 auto 3rem;
}

.accent-text { color: var(--clr-accent); }
.blue-text   { color: var(--clr-blue); }

/* ----------------------------------------------------------
   3. Dark / Light Mode Toggle
   ---------------------------------------------------------- */
/* Now base is light, so .light-mode toggles to DARK */
body.light-mode {
  --clr-primary: #0F172A;
  --clr-primary-light: #1E293B;
  --clr-primary-lighter: #334155;
  --clr-body-bg: #0F172A;
  --clr-text: #E2E8F0;
  --clr-text-muted: #94A3B8;
  --clr-white: #F8FAFC;
  --clr-card-bg: rgba(30, 41, 59, 0.6);
  --clr-card-border: rgba(148, 163, 184, 0.12);
  --clr-overlay: rgba(15, 23, 42, 0.7);
  --glass-bg: rgba(30, 41, 59, 0.45);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow-accent: 0 0 25px rgba(37, 99, 235, 0.45);
  --shadow-glow-blue: 0 0 25px rgba(14, 165, 233, 0.4);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border: 2px solid var(--clr-accent);
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--clr-accent);
  transition: transform var(--tr-spring), background var(--tr-base);
}

.theme-toggle:hover {
  transform: rotate(30deg) scale(1.1);
  background: var(--clr-accent);
  color: #FFFFFF;
}

/* ----------------------------------------------------------
   4. Navigation
   ---------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: background var(--tr-base), padding var(--tr-base), box-shadow var(--tr-base);
}

.navbar.scrolled {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--glass-border);
  padding: 0.6rem 0;
  box-shadow: var(--shadow-md);
}

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

.navbar-brand {
  font-family: var(--ff-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-white);
  letter-spacing: -0.5px;
}

.navbar-brand span { color: var(--clr-accent); }

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--clr-text);
  font-weight: 500;
  font-size: var(--fs-small);
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--clr-accent);
  border-radius: 2px;
  transition: width var(--tr-base);
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-link {
  position: relative;
  padding-bottom: 4px;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(to right, #2563eb, #0ea5e9);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}
.nav-link:hover::after,
.nav-link.nav-active::after {
  transform: scaleX(1);
}

.nav-links a:hover { color: var(--clr-accent); }

.nav-cta {
  padding: 0.55rem 1.5rem;
  background: var(--clr-accent);
  color: #FFFFFF !important;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: transform var(--tr-spring), box-shadow var(--tr-base);
}

.nav-cta::after { display: none !important; }

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-accent);
  color: #FFFFFF !important;
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  width: 26px;
  height: 2.5px;
  background: var(--clr-text);
  border-radius: 4px;
  transition: transform var(--tr-base), opacity var(--tr-fast);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ----------------------------------------------------------
   5. Hero Section
   ---------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--section-pad);
  background: linear-gradient(135deg, #F8FAFC 0%, #E0F2FE 40%, #F1F5F9 100%);
  background-size: 200% 200%;
  animation: gradient-shift 12s ease infinite;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, var(--clr-accent-glow), transparent 50%),
    radial-gradient(circle at 80% 30%, var(--clr-blue-glow), transparent 50%);
  opacity: 0.25;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero-content h1 {
  margin-bottom: 1.25rem;
}

.hero-content p {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--clr-text-muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: var(--clr-accent);
  color: #FFFFFF;
  font-family: var(--ff-heading);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform var(--tr-spring), box-shadow var(--tr-base);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-accent);
  color: #FFFFFF;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: transparent;
  color: var(--clr-text);
  font-family: var(--ff-heading);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--clr-gray-500);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--tr-base), color var(--tr-base), transform var(--tr-spring);
}

.btn-outline:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-3px);
}

/* Floating animated elements in hero */
.hero-float {
  position: absolute;
  border-radius: var(--radius-full);
  opacity: 0.12;
  pointer-events: none;
}

.hero-float--1 {
  width: 350px;
  height: 350px;
  background: var(--clr-accent);
  top: 10%;
  left: -5%;
  animation: float 7s ease-in-out infinite;
}

.hero-float--2 {
  width: 250px;
  height: 250px;
  background: var(--clr-blue);
  bottom: 10%;
  right: -3%;
  animation: float 9s ease-in-out infinite reverse;
}

.hero-float--3 {
  width: 150px;
  height: 150px;
  background: var(--clr-accent);
  top: 55%;
  right: 20%;
  animation: float 6s ease-in-out 1s infinite;
}

/* ----------------------------------------------------------
   6. Services Cards
   ---------------------------------------------------------- */
.services { padding: var(--section-pad); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.75rem;
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  transition: transform var(--tr-spring), box-shadow var(--tr-base), border-color var(--tr-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: linear-gradient(135deg, transparent 40%, var(--clr-accent) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--tr-base);
}

.service-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-glow-accent);
}

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

.service-card .icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-blue));
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.service-card h3 {
  margin-bottom: 0.75rem;
  font-size: var(--fs-h4);
}

.service-card p {
  color: var(--clr-text-muted);
  font-size: var(--fs-small);
}

.service-card .learn-more {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 1rem;
  font-weight: 600;
  font-size: var(--fs-small);
  color: var(--clr-accent);
  transition: gap var(--tr-base);
}

.service-card:hover .learn-more { gap: 0.75rem; }

/* ----------------------------------------------------------
   7. Process / Timeline Section
   ---------------------------------------------------------- */
.process { padding: var(--section-pad); }

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--clr-accent), var(--clr-blue));
  border-radius: 4px;
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
  padding-left: 1.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 16px;
  height: 16px;
  background: var(--clr-accent);
  border: 3px solid var(--clr-body-bg);
  border-radius: var(--radius-full);
  z-index: 1;
  transition: box-shadow var(--tr-base), transform var(--tr-spring);
}

.timeline-item:hover::before {
  box-shadow: var(--shadow-glow-accent);
  transform: scale(1.3);
}

.timeline-item h4 {
  margin-bottom: 0.35rem;
}

.timeline-item .step-number {
  display: inline-block;
  font-size: var(--fs-small);
  font-weight: 700;
  color: var(--clr-accent);
  margin-bottom: 0.25rem;
}

.timeline-item p {
  color: var(--clr-text-muted);
  font-size: var(--fs-small);
}

/* ----------------------------------------------------------
   8. Stats / Counter Section
   ---------------------------------------------------------- */
.stats {
  padding: var(--section-pad);
  background: linear-gradient(135deg, #F1F5F9 0%, #E0F2FE 100%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat-item {
  padding: 2rem 1rem;
}

.stat-number {
  font-family: var(--ff-heading);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  color: var(--clr-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
  text-shadow: none;
}

.stat-number.animate {
  animation: counter-pop 0.6s var(--tr-spring);
}

.stat-label {
  font-size: var(--fs-small);
  color: var(--clr-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* ----------------------------------------------------------
   9. Portfolio Grid
   ---------------------------------------------------------- */
.portfolio { padding: var(--section-pad); }

.portfolio-filters {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  font-family: var(--ff-body);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--clr-text-muted);
  background: transparent;
  border: 1px solid var(--clr-card-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--tr-base);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--clr-accent);
  color: #FFFFFF;
  border-color: var(--clr-accent);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  cursor: pointer;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--tr-slow);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.85) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity var(--tr-base);
}

.portfolio-item:hover img { transform: scale(1.08); }
.portfolio-item:hover .portfolio-overlay { opacity: 1; }

.portfolio-overlay h4 {
  margin-bottom: 0.25rem;
  color: #F8FAFC;
}

.portfolio-overlay .category-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ----------------------------------------------------------
   10. Testimonials Slider
   ---------------------------------------------------------- */
.testimonials { padding: var(--section-pad); }

.testimonials-track {
  display: flex;
  gap: 1.75rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 1rem;
  scrollbar-width: none;
}

.testimonials-track::-webkit-scrollbar { display: none; }

.testimonial-card {
  flex: 0 0 min(100%, 380px);
  scroll-snap-align: start;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
}

.testimonial-card .quote-mark {
  font-size: 3rem;
  line-height: 1;
  color: var(--clr-accent);
  opacity: 0.3;
  font-family: Georgia, serif;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
}

.testimonial-card .stars {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1rem;
  color: #FBBF24;
  font-size: 0.9rem;
}

.testimonial-card blockquote {
  color: var(--clr-text);
  font-style: italic;
  margin-bottom: 1.5rem;
  font-size: var(--fs-small);
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-author img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--clr-accent);
}

.testimonial-author .author-info h5 {
  font-size: var(--fs-small);
  font-weight: 600;
}

.testimonial-author .author-info span {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

/* ----------------------------------------------------------
   11. Growth Dashboard Section
   ---------------------------------------------------------- */
.dashboard { padding: var(--section-pad); }

.dashboard-ui {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 960px;
  margin: 0 auto;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.dashboard-header h4 { font-size: var(--fs-h4); }

.dashboard-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.metric-card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
}

.metric-card .label {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.35rem;
}

.metric-card .value {
  font-family: var(--ff-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-white);
}

.metric-card .trend {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-accent);
  margin-top: 0.25rem;
}

.metric-card .trend.down { color: #EF4444; }

.chart-placeholder {
  height: 200px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg,
    rgba(37, 99, 235, 0.06) 0%,
    rgba(14, 165, 233, 0.06) 100%);
  border: 1px dashed var(--glass-border);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
  gap: 6px;
}

.chart-bar {
  flex: 1;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(to top, var(--clr-accent), var(--clr-blue));
  transition: height var(--tr-slow);
  min-height: 10px;
}

/* ----------------------------------------------------------
   12. CTA Section
   ---------------------------------------------------------- */
.cta {
  padding: var(--section-pad);
  text-align: center;
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 50%, #E0F2FE 100%);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, var(--clr-accent-glow), transparent 70%);
  opacity: 0.12;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta h2 { margin-bottom: 1rem; }

.cta p {
  color: var(--clr-text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
}

.btn-pulse {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  background: var(--clr-accent);
  color: #FFFFFF;
  font-family: var(--ff-heading);
  font-weight: 700;
  font-size: 1.05rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  animation: pulse-glow 2.5s ease-in-out infinite;
  transition: transform var(--tr-spring);
}

.btn-pulse:hover {
  transform: translateY(-3px) scale(1.04);
  color: #FFFFFF;
}

/* ----------------------------------------------------------
   13. Blog Cards
   ---------------------------------------------------------- */
.blog { padding: var(--section-pad); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.blog-card {
  background: var(--clr-card-bg);
  border: 1px solid var(--clr-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--tr-spring), box-shadow var(--tr-base);
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.blog-card .thumb {
  height: 200px;
  overflow: hidden;
}

.blog-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--tr-slow);
}

.blog-card:hover .thumb img { transform: scale(1.06); }

.blog-card .card-body {
  padding: 1.5rem;
}

.blog-card .meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

.blog-card .category-badge {
  padding: 0.2rem 0.65rem;
  background: rgba(37, 99, 235, 0.1);
  color: var(--clr-accent);
  font-weight: 600;
  border-radius: 4px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.blog-card h3 {
  font-size: var(--fs-h4);
  margin-bottom: 0.6rem;
  transition: color var(--tr-fast);
}

.blog-card:hover h3 { color: var(--clr-accent); }

.blog-card p {
  color: var(--clr-text-muted);
  font-size: var(--fs-small);
}

/* ----------------------------------------------------------
   14. Footer
   ---------------------------------------------------------- */
.footer {
  background: var(--clr-footer-bg);
  border-top: 1px solid var(--clr-footer-border);
  padding: 4rem 0 1.5rem;
  color: var(--clr-footer-text);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--clr-footer-muted);
  font-size: var(--fs-small);
  margin-top: 0.75rem;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 1.25rem;
  color: var(--clr-footer-heading);
}

.footer-col a {
  display: block;
  color: var(--clr-footer-muted);
  font-size: var(--fs-small);
  padding: 0.3rem 0;
  transition: color var(--tr-fast), padding-left var(--tr-base);
}

.footer-col a:hover {
  color: var(--clr-accent);
  padding-left: 6px;
}

.footer-socials {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.footer-socials a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--clr-footer-border);
  border-radius: var(--radius-full);
  color: var(--clr-footer-muted);
  font-size: 1rem;
  transition: all var(--tr-base);
}

.footer-socials a:hover {
  background: var(--clr-accent);
  color: #FFFFFF;
  border-color: var(--clr-accent);
  transform: translateY(-3px);
}

.footer h1, .footer h2, .footer h3, .footer h5, .footer h6 {
  color: var(--clr-footer-heading);
}

.footer a {
  color: var(--clr-footer-muted);
}

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

.footer .navbar-brand {
  color: var(--clr-footer-heading);
}

.footer-bottom {
  border-top: 1px solid var(--clr-footer-border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--clr-footer-muted);
}

/* ----------------------------------------------------------
   15. WhatsApp Floating Button
   ---------------------------------------------------------- */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 58px;
  height: 58px;
  background: #25D366;
  color: #fff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
  animation: pulse-glow-wa 2s ease-in-out infinite;
  transition: transform var(--tr-spring);
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.12);
  color: #fff;
}

/* ----------------------------------------------------------
   16. Custom Scrollbar
   ---------------------------------------------------------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #F1F5F9;
}

::-webkit-scrollbar-thumb {
  background: #93C5FD;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-accent);
}

/* Firefox */
html {
  scrollbar-width: thin;
  scrollbar-color: #93C5FD #F1F5F9;
}

/* ----------------------------------------------------------
   17. AOS-style Scroll Animations
   ---------------------------------------------------------- */
.aos-init {
  opacity: 0;
  transition: opacity var(--tr-slow), transform var(--tr-slow);
}

.aos-init.aos-animate { opacity: 1; transform: none; }

/* Fade Up */
.aos-fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--tr-slow), transform var(--tr-slow);
}

.aos-fade-up.aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* Fade Right */
.aos-fade-right {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--tr-slow), transform var(--tr-slow);
}

.aos-fade-right.aos-animate {
  opacity: 1;
  transform: translateX(0);
}

/* Fade Left */
.aos-fade-left {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--tr-slow), transform var(--tr-slow);
}

.aos-fade-left.aos-animate {
  opacity: 1;
  transform: translateX(0);
}

/* Zoom In */
.aos-zoom-in {
  opacity: 0;
  transform: scale(0.85);
  transition: opacity var(--tr-slow), transform var(--tr-slow);
}

.aos-zoom-in.aos-animate {
  opacity: 1;
  transform: scale(1);
}

/* Delay modifiers */
.aos-delay-100 { transition-delay: 0.1s; }
.aos-delay-200 { transition-delay: 0.2s; }
.aos-delay-300 { transition-delay: 0.3s; }
.aos-delay-400 { transition-delay: 0.4s; }
.aos-delay-500 { transition-delay: 0.5s; }

/* ----------------------------------------------------------
   18. Glassmorphism Utility Classes
   ---------------------------------------------------------- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

.glass-sm {
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
}

.glass-lg {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 2rem;
}

.glass-dark {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ----------------------------------------------------------
   19. Responsive Breakpoints
   ---------------------------------------------------------- */

/* Tablet */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .portfolio-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }

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

/* Mobile landscape */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100vh;
    flex-direction: column;
    background: #FFFFFF;
    padding: 5rem 2rem 2rem;
    gap: 1.5rem;
    transition: right var(--tr-base);
    box-shadow: var(--shadow-lg);
    z-index: 998;
  }

  .nav-links.open { right: 0; }

  .nav-toggle { display: flex; }

  .hero { min-height: 90vh; }

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

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

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

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

  .timeline { padding-left: 30px; }

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

/* Mobile portrait */
@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

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

  .portfolio-filters {
    gap: 0.5rem;
  }

  .filter-btn {
    padding: 0.4rem 0.9rem;
    font-size: 0.8rem;
  }

  .dashboard-metrics {
    grid-template-columns: 1fr;
  }

  .whatsapp-float {
    width: 50px;
    height: 50px;
    font-size: 1.4rem;
    bottom: 20px;
    right: 20px;
  }
}

/* ----------------------------------------------------------
   20. Lead Form with Floating Labels
   ---------------------------------------------------------- */
.lead-form {
  max-width: 560px;
  margin: 0 auto;
}

.form-group {
  position: relative;
  margin-bottom: 1.75rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 1rem 1rem 0.6rem;
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  color: var(--clr-text);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--clr-card-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--tr-base), box-shadow var(--tr-base);
  appearance: none;
}

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

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-group label {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--fs-body);
  color: var(--clr-text-muted);
  pointer-events: none;
  transition: all var(--tr-base);
  background: transparent;
  padding: 0 0.25rem;
}

.form-group textarea ~ label {
  top: 1rem;
  transform: none;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label,
.form-group select:focus ~ label,
.form-group select:valid ~ label {
  top: -0.5rem;
  font-size: 0.75rem;
  color: var(--clr-accent);
  background: var(--clr-body-bg);
}

.form-submit {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-blue));
  color: #FFFFFF;
  font-family: var(--ff-heading);
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform var(--tr-spring), box-shadow var(--tr-base);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-accent);
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ----------------------------------------------------------
   21. Loading / Preloader Animation
   ---------------------------------------------------------- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid #E2E8F0;
  border-top-color: var(--clr-accent);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.preloader-text {
  margin-top: 1.25rem;
  font-family: var(--ff-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-white);
  letter-spacing: 2px;
}

/* ============================================================
   KEYFRAME ANIMATIONS
   ============================================================ */

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33%      { transform: translateY(-20px) rotate(2deg); }
  66%      { transform: translateY(10px) rotate(-1deg); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 10px var(--clr-accent-glow); }
  50%      { box-shadow: 0 0 30px var(--clr-accent-glow), 0 0 60px rgba(37, 99, 235, 0.15); }
}

@keyframes pulse-glow-wa {
  0%, 100% { box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4); }
  50%      { box-shadow: 0 4px 25px rgba(37, 211, 102, 0.6), 0 0 50px rgba(37, 211, 102, 0.2); }
}

@keyframes gradient-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes counter-pop {
  0%   { transform: scale(0.5); opacity: 0; }
  70%  { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes slide-in-left {
  from { transform: translateX(-60px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

@keyframes slide-in-right {
  from { transform: translateX(60px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

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

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

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

/* Utility animation classes */
.anim-slide-left  { animation: slide-in-left 0.6s ease forwards; }
.anim-slide-right { animation: slide-in-right 0.6s ease forwards; }
.anim-fade-up     { animation: fade-up 0.6s ease forwards; }
.anim-float       { animation: float 6s ease-in-out infinite; }

/* ----------------------------------------------------------
   Utility Helpers
   ---------------------------------------------------------- */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap   { flex-wrap: wrap; }
.gap-1       { gap: 0.5rem; }
.gap-2       { gap: 1rem; }
.gap-3       { gap: 1.5rem; }

.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;
}

/* ------------------------------------------------------------------
   Accessibility: visible keyboard focus on all interactive elements.
   :where() keeps specificity 0; !important on outline overrides any
   Tailwind `focus:outline-none` so keyboard users always see focus.
------------------------------------------------------------------ */
:where(a, button, [role="button"], input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid #7C3AED !important;
  outline-offset: 2px;
  border-radius: 4px;
}