:root {
  /* Colors */
  --color-background: #1a1a1a;
  --color-background-secondary: #2a2a2a;
  --color-text: #ffffff;
  --color-text-muted: rgba(255, 255, 255, 0.7);
  --color-primary: #4caf50;
  --color-primary-light: rgba(76, 175, 80, 0.1);
  --color-primary-hover: #43a047;
  --color-card-bg: rgba(255, 255, 255, 0.1);
  --color-code-bg: rgba(0, 0, 0, 0.5);
  --color-code-text: #4caf50;
  --color-border: rgba(255, 255, 255, 0.2);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Effects */
  --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 -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.375rem;
  --border-radius-lg: 0.5rem;
  
  /* Animation */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

/* Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-text);
  background: linear-gradient(45deg, var(--color-background), var(--color-background-secondary));
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.app {
  min-height: 100%;
  position: relative;
  overflow: hidden;
}

.app::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, var(--color-primary-light) 0%, transparent 50%);
  animation: pulse 8s ease-in-out infinite;
  z-index: 0;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.5);
    opacity: 0.2;
  }
  100% {
    transform: scale(1);
    opacity: 0.5;
  }
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.content {
  width: 100%;
  text-align: center;
}

/* Typography */
.title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

.subtitle {
  font-size: var(--font-size-xl);
  font-weight: 400;
  margin-bottom: var(--spacing-xxl);
  color: var(--color-text-muted);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Logo */
.logo-container {
  margin-bottom: var(--spacing-lg);
}

.logo {
  width: 8rem;
  height: 8rem;
}

/* Form */
.email-form-container {
  display: flex;
  justify-content: center;
  max-width: 500px;
  margin: 0 auto var(--spacing-xxl);
  width: 100%;
}

.form-input, 
.form-select {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
  width: 100%;
  font-size: var(--font-size-base);
}

.form-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.95);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: linear-gradient(135deg, var(--color-background), #2d2d2d);
  border-radius: var(--border-radius-lg);
  width: 90%;
  max-width: 750px; /* Increased for landscape orientation */
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(76, 175, 80, 0.1);
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.19, 1, 0.22, 1);
  position: relative;
  overflow: hidden; /* Prevents scrollbar */
  border: 1px solid rgba(76, 175, 80, 0.2);
}

.modal-body {
  padding: var(--spacing-xl);
  max-height: 80vh;
  overflow-y: auto;
}

/* Form selection elements fix */
select.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234caf50' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.2em;
  padding-right: 2.5rem;
}

select.form-select option {
  background-color: #2d2d2d;
  color: var(--color-text);
  padding: 0.5rem;
}

/* Radio button alignment improvements */
.radio-table {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  border-radius: var(--border-radius-md);
  background-color: rgba(255, 255, 255, 0.03);
  padding: var(--spacing-sm);
}

.radio-label {
  display: flex;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: background-color 0.2s;
  align-items: flex-start;
}

.radio-cell {
  flex: 0 0 24px;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  margin-right: var(--spacing-md);
}

.radio-cell input[type="radio"] {
  cursor: pointer;
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  margin: 3px 0 0 0;
}

/* Responsive adjustments for landscape */
@media (min-width: 768px) {
  .modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
  
  .modal-body p {
    grid-column: span 2;
  }
  
  .form-group:nth-child(5) {
    grid-column: span 2;
  }
  
  .form-group:last-of-type {
    grid-column: span 2;
  }
}

/* Button styling */
.button-primary {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  background: linear-gradient(135deg, var(--color-primary), #38923c);
  color: white;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}

.button-primary:hover {
  background: linear-gradient(135deg, #38923c, var(--color-primary));
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.button-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(76, 175, 80, 0.2);
}

.button-full {
  width: 100%;
}

.button-primary {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  background-color: var(--color-text);
  color: #000;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-normal);
}

.button-primary:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xxl);
}

.code-block {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  background-color: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(8px);
  text-align: left;
}

.code-example {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  background: var(--color-code-bg);
  color: var(--color-code-text);
  font-family: monospace;
  font-size: var(--font-size-sm);
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  margin: 0;
}

.benefits {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
}

.benefits-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

.benefits-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.benefits-item {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.benefit-icon {
  color: var(--color-primary);
  margin-right: var(--spacing-md);
  font-size: var(--font-size-lg);
  width: 24px;
}

/* Cards */
.cards-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.card {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  background-color: var(--color-card-bg);
  backdrop-filter: blur(8px);
  text-align: left;
}

.card-icon {
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  font-size: var(--font-size-2xl);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--color-text-muted);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 1rem;
  border-radius: var(--border-radius-md);
  background-color: #2a2a2a;
  color: #fff;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease;
  min-width: 300px;
  max-width: 450px;
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast-success {
  border-left: 4px solid var(--color-primary);
}

.toast-error {
  border-left: 4px solid #f44336;
}

.toast-content {
  flex: 1;
}

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

.toast-message {
  font-size: 0.875rem;
  opacity: 0.9;
}

.toast-close {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 1.25rem;
  opacity: 0.5;
  transition: opacity 0.2s;
}

.toast-close:hover {
  opacity: 1;
}

/* Animations */
.fade-in {
  opacity: 0;
  animation: fadeIn 0.8s forwards;
}

.scale-in {
  transform: scale(0.8);
  animation: scaleIn 0.5s forwards;
}

.delay-1 {
  animation-delay: 0.3s;
}

.delay-2 {
  animation-delay: 0.5s;
}

.delay-3 {
  animation-delay: 0.7s;
}

.delay-4 {
  animation-delay: 0.9s;
}

.delay-5 {
  animation-delay: 1.1s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    transform: scale(0.8);
  }
  to {
    transform: scale(1);
  }
}

/* Responsive */
@media (min-width: 768px) {
  .title {
    font-size: var(--font-size-5xl);
  }
  
  .email-form {
    flex-direction: row;
  }
  
  .email-input {
    flex: 1;
    margin-bottom: 0;
    margin-right: var(--spacing-md);
  }
  
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .cards-container {
    grid-template-columns: repeat(3, 1fr);
  }
}