:root {
  --color-primary: #4a9d5f;
  --color-bg: #e7e9ee;
  --color-text: #0f1115;
  --color-muted: #9aa3b2;
  --color-success: #5cb574;
  --color-error: #e74c3c;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --radius: 8px;
  --transition: 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

.navbar {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-text);
  font-size: 1.25rem;
  font-weight: 600;
}

.brand img {
  width: 40px;
  height: 40px;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  animation: fadeIn 0.8s ease-out;
}

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

.hero-logo {
  width: 150px;
  height: 150px;
  margin-bottom: var(--spacing-lg);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-muted);
  max-width: 600px;
  margin-bottom: var(--spacing-xl);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.social-links a {
  color: var(--color-muted);
  transition: color var(--transition);
}

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

.footer-signup {
  position: sticky;
  bottom: 0;
  background-color: rgba(15, 17, 21, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-md) 0;
}

.signup-form {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  flex: 1;
  min-width: 250px;
}

.form-group label {
  font-size: 0.875rem;
  color: var(--color-muted);
}

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

input, textarea {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  font-size: 1rem;
  transition: all var(--transition);
  font-family: inherit;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(74, 157, 95, 0.2);
}

input.error, textarea.error {
  border-color: var(--color-error);
}

.error-message {
  color: var(--color-error);
  font-size: 0.875rem;
  display: none;
}

.form-group.has-error .error-message {
  display: block;
}

button {
  background-color: var(--color-primary);
  color: white;
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

button:hover {
  background-color: #3d8350;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(74, 157, 95, 0.3);
}

button:active {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(74, 157, 95, 0.3);
}

.toast {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background-color: var(--color-success);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 1000;
  animation: slideIn 0.3s ease-out;
  max-width: 400px;
}

.toast.error {
  background-color: var(--color-error);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.contact-section {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
}

.contact-section h1 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-form .form-group {
  min-width: 100%;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
  }

  .signup-form {
    flex-direction: column;
  }

  .form-group {
    width: 100%;
  }

  button {
    width: 100%;
  }

  .hero-logo {
    width: 120px;
    height: 120px;
  }

  .toast {
    right: var(--spacing-sm);
    left: var(--spacing-sm);
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}