:root {
  --primary: #0d6efd;
  --primary-dark: #0b5ed7;
  --primary-light: #e8f0fe;
  --dark: #1a1a2e;
  --gray: #6c757d;
  --light-gray: #f8f9fa;
  --white: #ffffff;
  --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 30px 80px rgba(13, 110, 253, 0.12);
}


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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  line-height: 1.7;
  color: var(--dark);
  background: var(--white);
  padding-top: 80px;
  overflow-x: hidden;
}


.fw-600 {
  font-weight: 600;
}

.fw-700 {
  font-weight: 700;
}

.fw-800 {
  font-weight: 800;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.display-3 {
  font-weight: 800;
  letter-spacing: -0.03em;
}

.text-light-50 {
  color: rgba(255, 255, 255, 0.7);
}


.header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  z-index: 1050;
  transition: var(--transition);
}

.header .logo span {
  font-weight: 800;
}

.header .nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.5rem 1rem;
  transition: var(--transition);
  position: relative;
}

.header .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.header .nav-link:hover::after {
  width: 60%;
}

.header .nav-link:hover {
  color: var(--primary) !important;
}


.hero-section {
  min-height: calc(100vh - 80px);
  padding: 60px 0;
  background: linear-gradient(135deg, #f8faff 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(13, 110, 253, 0.04) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-text .badge {
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.hero-text .display-3 {
  font-size: clamp(2.8rem, 7vw, 4.5rem);
}

.hero-image img {
  transition: var(--transition);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.08);
}

.hero-image img:hover {
  transform: scale(1.01) translateY(-4px);
}

.stats div {
  border-right: 1px solid rgba(0, 0, 0, 0.06);
  padding-right: 1.5rem;
}

.stats div:last-child {
  border-right: none;
}

.stats .h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}


.section-padding {
  padding: 90px 0;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }
}


.card {
  border-radius: 20px;
  transition: var(--transition);
  background: var(--white);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover) !important;
}

.card .icon-box {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  transition: var(--transition);
}

.card:hover .icon-box {
  background: var(--primary) !important;
}

.card:hover .icon-box i {
  color: var(--white) !important;
}

.card .icon-box i {
  transition: var(--transition);
}


.btn {
  border-radius: 12px;
  font-weight: 600;
  transition: var(--transition);
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 8px 24px rgba(13, 110, 253, 0.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(13, 110, 253, 0.35);
}

.btn-outline-primary {
  border-width: 2px;
}

.btn-outline-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13, 110, 253, 0.15);
}

.btn-outline-dark {
  border-width: 2px;
}

.btn-outline-dark:hover {
  transform: translateY(-2px);
  background: var(--dark);
  color: var(--white);
}

.btn-lg {
  padding: 0.9rem 2.2rem;
  font-size: 1.05rem;
}


.badge.bg-primary.bg-opacity-10 {
  background: rgba(13, 110, 253, 0.08) !important;
  color: var(--primary) !important;
  font-weight: 600;
  letter-spacing: 0.02em;
}


.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.reveal:nth-child(2) {
  transition-delay: 0.1s;
}

.reveal:nth-child(3) {
  transition-delay: 0.2s;
}


#backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 56px;
  height: 56px;
  border-radius: 50% !important;
  background: var(--primary);
  border: none;
  box-shadow: 0 8px 24px rgba(13, 110, 253, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8);
  transition: var(--transition);
  z-index: 1040;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  cursor: pointer;
}

#backToTop.show {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

#backToTop:hover {
  transform: translateY(-4px) scale(1.05);
  background: var(--primary-dark);
  box-shadow: 0 12px 32px rgba(13, 110, 253, 0.45);
}

#backToTop i {
  line-height: 1;
}


.footer {
  border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.footer a {
  transition: var(--transition);
}

.footer a:hover {
  color: var(--primary) !important;
}


.navbar-toggler {
  padding: 0;
  font-size: 1.8rem;
  color: var(--dark);
}

.navbar-toggler:focus {
  box-shadow: none;
}


#mobileNav .nav-link {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  font-weight: 600;
}

#mobileNav .nav-link:hover {
  color: var(--primary) !important;
  padding-left: 0.5rem;
}


@media (max-width: 992px) {
  .hero-section {
    min-height: auto;
    padding: 40px 0 60px;
  }

  .hero-text .display-3 {
    font-size: clamp(2.4rem, 6vw, 3.2rem);
  }

  .stats div {
    border-right: none;
    padding-right: 0;
  }
}

@media (max-width: 576px) {
  .hero-text .display-3 {
    font-size: 2.2rem;
  }

  .btn-lg {
    padding: 0.7rem 1.5rem;
    font-size: 0.95rem;
  }

  #backToTop {
    width: 48px;
    height: 48px;
    bottom: 20px;
    right: 20px;
  }

  .card .icon-box {
    width: 60px;
    height: 60px;
  }
}


::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}