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

/* CSS Variables */
:root {
  --color-bg: #1a3a2f;
  --color-btn: #2d5448;
  --color-btn-hover: #3a6b5a;
  --color-accent: #4a9b7f;
  --color-accent-hover: #5bb392;
  --color-text: #ffffff;
  --color-text-muted: rgba(255, 255, 255, 0.85);
  --color-success: #5bb392;
  --color-error: #ff6b6b;
  --max-width: 500px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --radius-btn: 12px;
  --radius-input: 8px;
}

/* Base Styles */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  min-height: 100vh;
}

/* Profile Section */
.profile {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding-top: var(--spacing-md);
}

.headshot-wrapper {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--color-text);
  background-color: var(--color-btn);
}

.headshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.name {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--spacing-sm);
}

.title {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

/* Links Section */
.links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  width: 100%;
}

.link-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-btn);
  color: var(--color-text);
  text-decoration: none;
  text-align: center;
  font-weight: 500;
  font-size: 1rem;
  border-radius: var(--radius-btn);
  border: none;
  transition: background-color 0.2s ease;
  min-height: 52px;
}

.link-btn:hover,
.link-btn:focus {
  background-color: var(--color-btn-hover);
  outline: none;
}

.link-btn:active {
  transform: scale(0.98);
}

.link-btn-accent {
  background-color: var(--color-accent);
}

.link-btn-accent:hover,
.link-btn-accent:focus {
  background-color: var(--color-accent-hover);
}

/* Newsletter Section */
.newsletter {
  width: 100%;
  padding: var(--spacing-md) 0;
}

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

.email-input {
  padding: var(--spacing-md);
  font-size: 1rem;
  background-color: var(--color-btn);
  border: 2px solid transparent;
  border-radius: var(--radius-input);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s ease;
  min-height: 48px;
}

.email-input:focus {
  border-color: var(--color-accent);
}

.email-input::placeholder {
  color: var(--color-text-muted);
}

.submit-btn {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  background-color: var(--color-accent);
  color: var(--color-text);
  border: none;
  border-radius: var(--radius-input);
  cursor: pointer;
  transition: background-color 0.2s ease;
  min-height: 48px;
}

.submit-btn:hover,
.submit-btn:focus {
  background-color: var(--color-accent-hover);
  outline: none;
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-message {
  text-align: center;
  font-size: 0.9rem;
  min-height: 1.5em;
  margin-top: var(--spacing-xs);
}

.form-message.success {
  color: var(--color-success);
}

.form-message.error {
  color: var(--color-error);
}

/* Footer */
.footer {
  margin-top: auto;
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.footer-logo {
  width: 50px;
  height: auto;
  opacity: 0.9;
}

/* Responsive adjustments */
@media (min-width: 480px) {
  .newsletter-form {
    flex-direction: row;
  }

  .email-input {
    flex: 1;
  }

  .submit-btn {
    flex-shrink: 0;
  }
}