/* Base styles and resets */
:root {
  --background: 0 0% 100%;
  --foreground: 222.2 84% 4.9%;
  --primary: 221.2 83.2% 53.3%;
  --primary-foreground: 210 40% 98%;
  --secondary: 226.7 70.7% 57.1%;
  --secondary-foreground: 210 40% 98%;
  --muted: 210 40% 96.1%;
  --muted-foreground: 215.4 16.3% 46.9%;
  --accent: 210 40% 96.1%;
  --accent-foreground: 222.2 47.4% 11.2%;
  --destructive: 0 84.2% 60.2%;
  --destructive-foreground: 210 40% 98%;
  --border: 214.3 31.8% 91.4%;
  --input: 214.3 31.8% 91.4%;
  --ring: 221.2 83.2% 53.3%;
  --radius: 0.5rem;
  
  /* Converting color formats for easier use */
  --color-primary: hsl(221.2, 83.2%, 53.3%);
  --color-secondary: hsl(226.7, 70.7%, 57.1%);
  --color-background: #ffffff;
  --color-text: #0f172a;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;
  --color-border: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --transition-base: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button, input {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Utility Classes */
.gradient-heading {
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

/* Section styles */
section {
  padding: 4rem 0;
}

.section-header {
  text-align: center;
  max-width: 768px;
  margin: 0 auto 4rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-description {
  font-size: 1.125rem;
  color: var(--color-gray-600);
}

/* Button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
  border: none;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-gray-700);
}

.btn-outline:hover {
  background-color: var(--color-gray-50);
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1.125rem;
}

/* Header styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 1rem 0;
  transition: var(--transition-base);
  background-color: transparent;
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-size: 1.25rem;
  font-weight: 700;
}

.main-nav {
  display: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  transition: var(--transition-base);
  padding: 0.5rem 1rem;
}

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

.header-buttons {
  display: none;
}

.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-gray-700);
  transition: var(--transition-base);
}

.mobile-menu-btn.open span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.mobile-menu-btn.open span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.open span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background-color: white;
  box-shadow: var(--shadow-md);
  padding: 1rem 0;
  z-index: 40;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

.mobile-menu.show {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  padding: 0.75rem 0;
  font-weight: 500;
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
}

.mobile-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* Hero section */
.hero {
  padding-top: 8rem;
  padding-bottom: 5rem;
  background: linear-gradient(to bottom, #eef2ff, white);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-gray-600);
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.secure-note {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-top: 1rem;
}

.hero-image {
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

/* Features section */
.features {
  background-color: var(--color-gray-50);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.feature-card {
  background-color: white;
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-description {
  color: var(--color-gray-600);
}

/* How it works section */
.steps {
  display: flex;
  flex-direction: column;
  gap: 6rem;
}

.step {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.step-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.step-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(59, 130, 246, 0.2);
}

.step-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.step-description {
  font-size: 1.125rem;
  color: var(--color-gray-600);
  margin-bottom: 1.5rem;
}

.step-benefits {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.step-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.step-benefits li i {
  color: #10b981;
  margin-top: 0.25rem;
}

.step-image {
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

/* Testimonials section */
.testimonials {
  background-color: var(--color-gray-50);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.testimonial-card {
  background-color: white;
  padding: 2rem;
  border-radius: 0.75rem;
  border: 1px solid var(--color-gray-100);
  box-shadow: var(--shadow-sm);
}

.testimonial-stars {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1rem;
  color: #f59e0b;
}

.testimonial-quote {
  font-style: italic;
  color: var(--color-gray-700);
  margin-bottom: 1.5rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-image {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
}

.author-name {
  font-weight: 600;
}

.author-title {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

/* Early access section */
.early-access {
  background: linear-gradient(to bottom right, #eff6ff, #f5f3ff, #eff6ff);
  padding: 4rem 0;
}

.early-access-card {
  background-color: white;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  max-width: 48rem;
  margin: 0 auto;
}

.early-access-content {
  padding: 2rem;
}

.early-access-form {
  margin-top: 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  font-size: 1rem;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.form-note {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-gray-500);
  margin-top: 1rem;
}

.early-access-footer {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-gray-100);
}

.users-joined {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-avatars {
  display: flex;
}

.user-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 2px solid white;
  margin-left: -0.5rem;
}

.user-avatar:first-child {
  margin-left: 0;
}

.joined-text {
  font-size: 0.875rem;
  color: var(--color-gray-600);
}

.limited-spots {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.status-dot {
  display: inline-block;
  width: 0.75rem;
  height: 0.75rem;
  background-color: #10b981;
  border-radius: 50%;
}

.spots-text {
  font-size: 0.875rem;
  color: var(--color-gray-600);
}

/* Footer styles */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: 3rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.footer-about {
  max-width: 24rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-description {
  font-size: 0.875rem;
}

.footer-heading {
  color: white;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-menu a {
  font-size: 0.875rem;
  transition: var(--transition-base);
}

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

.footer-bottom {
  border-top: 1px solid #2d3748;
  margin-top: 3rem;
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.copyright {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

.social-links {
  display: flex;
  gap: 1.5rem;
}

.social-link {
  color: var(--color-gray-400);
  transition: var(--transition-base);
}

.social-link:hover {
  color: var(--color-primary);
}

/* Toast notifications */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  min-width: 20rem;
  transform: translateY(150%);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
  z-index: 100;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast.error {
  border-left: 4px solid #ef4444;
}

.toast-content {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.toast-icon {
  font-size: 1.5rem;
  color: #10b981;
}

.toast.error .toast-icon {
  color: #ef4444;
}

.toast-message h4 {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.toast-message p {
  font-size: 0.875rem;
  color: var(--color-gray-600);
}

.toast-close {
  font-size: 1.5rem;
  color: var(--color-gray-400);
  cursor: pointer;
}

/* Media Queries */
@media (min-width: 640px) {
  .section-title {
    font-size: 2.25rem;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-buttons {
    flex-direction: row;
  }
  
  .form-group {
    flex-direction: row;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .early-access-footer {
    flex-direction: row;
    justify-content: space-between;
  }
  
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 768px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
  }
  
  .header-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .mobile-menu-btn {
    display: none;
  }
  
  .hero-content {
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .step {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .step.reverse {
    direction: rtl;
  }
  
  .step.reverse .step-content {
    direction: ltr;
  }
  
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .section-title {
    font-size: 2.5rem;
  }
  
  .hero-title {
    font-size: 3.5rem;
  }
  
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}