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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background: #0f172a;
  color: #ffffff;
  line-height: 1.6;
}

/* Light Theme */
body.light {
  background: #ffffff;
  color: #1e293b;
}

/* Theme Toggle Button */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  color: white;
  font-size: 24px;
  border: none;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
  transition: transform 0.3s;
}

.theme-toggle:hover {
  transform: scale(1.1);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #22c55e, #3b82f6);
  color: white;
  font-size: 20px;
  border: none;
  cursor: pointer;
  z-index: 999;
  display: none;
  box-shadow: 0 4px 15px rgba(34, 197, 94, 0.4);
}

.back-to-top.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Header */
header {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  padding: 20px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.logo {
  font-size: 24px;
  font-weight: 800;
}

nav {
  display: flex;
  gap: 25px;
  flex-wrap: wrap;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: 8px;
  transition: background 0.3s;
}

nav a:hover {
  background: rgba(255,255,255,0.2);
}

/* Hero Section */
.hero {
  padding: 80px 20px;
  text-align: center;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.light .hero {
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
}

.hero-text h1 {
  font-size: 48px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 18px;
  color: #94a3b8;
  max-width: 600px;
  margin: 0 auto 30px;
}

body.light .hero-text p {
  color: #64748b;
}

.btn-primary, .btn-secondary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  margin: 5px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  color: white;
}

.btn-secondary {
  border: 2px solid #3b82f6;
  color: #3b82f6;
}

.btn-primary:hover, .btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

/* Sections */
.section {
  padding: 60px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.section h2 {
  text-align: center;
  font-size: 36px;
  margin-bottom: 40px;
  color: #3b82f6;
}

/* Accordion */
.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.acc-item {
  margin-bottom: 15px;
  border-radius: 12px;
  overflow: hidden;
  background: #1e293b;
  border: 1px solid #334155;
}

body.light .acc-item {
  background: #f1f5f9;
  border-color: #e2e8f0;
}

.acc-title {
  width: 100%;
  padding: 20px;
  background: linear-gradient(135deg, #22c55e, #3b82f6);
  border: none;
  color: white;
  font-size: 18px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.acc-content {
  max-height: 0;
  overflow: hidden;
  background: #0f172a;
  transition: max-height 0.4s ease;
}

body.light .acc-content {
  background: #ffffff;
}

.acc-content p {
  padding: 20px;
  color: #94a3b8;
}

body.light .acc-content p {
  color: #64748b;
}

.acc-item.active .acc-content {
  max-height: 300px;
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}

.price-card {
  background: #1e293b;
  border-radius: 16px;
  padding: 30px;
  text-align: center;
  border: 1px solid #334155;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
}

body.light .price-card {
  background: #f1f5f9;
  border-color: #e2e8f0;
}

.price-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.price-card.featured {
  border: 2px solid #3b82f6;
}

.tag {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.price-card h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.price {
  font-size: 28px;
  font-weight: 800;
  color: #3b82f6;
  margin-bottom: 20px;
}

.price-card ul {
  text-align: left;
}

.price-card li {
  padding: 8px 0;
  color: #94a3b8;
  font-size: 14px;
}

body.light .price-card li {
  color: #64748b;
}

/* Team Grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px