/* ==========================================
   LUNGMAXX - Global Styles
   ========================================== */

:root {
  /* Core palette - mostly black/white */
  --black: #0a0a0a;
  --white: #ffffff;
  --off-white: #fafafa;
  
  /* Grays */
  --gray-100: #f4f4f5;
  --gray-200: #e4e4e7;
  --gray-300: #d4d4d8;
  --gray-400: #a1a1aa;
  --gray-500: #71717a;
  --gray-600: #52525b;
  --gray-700: #3f3f46;
  --gray-800: #27272a;
  --gray-900: #18181b;
  
  /* Accent - subtle, used sparingly */
  --accent: #22c55e;
  --accent-muted: #16a34a;
  --red: #E96245;
  --red-muted: #F4AC90;
  
  /* Typography */
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 18px;
  --space-xl: 20px;
  --space-2xl: 32px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-main);
  background: var(--white);
  color: var(--black);
  line-height: 1.5;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ==========================================
   TOP BANNER
   ========================================== */
.top-banner {
  background: var(--black);
  color: var(--white);
  text-align: center;
  padding: var(--space-sm) var(--space-md);
  font-size: 13px;
  font-weight: 500;
}

/* ==========================================
   HEADER
   ========================================== */
.header {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--gray-200);
}

.header .container {
  display: flex;
  justify-content: center;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--gray-400);
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn-primary {
  display: block;
  width: 100%;
  background: var(--black);
  color: var(--white);
  padding: var(--space-md) var(--space-lg);
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn-primary:hover {
  background: var(--gray-800);
}

/* ==========================================
   FORMS
   ========================================== */
.optin-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.optin-form input[type="email"] {
  padding: var(--space-md);
  font-size: 16px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  background: var(--white);
}

.optin-form input:focus {
  outline: none;
  border-color: var(--gray-400);
}

/* ==========================================
   SECTIONS
   ========================================== */
.section {
  padding: var(--space-2xl) 0;
   background: var(--off-white);

}

.section-alt {
  background: white:;
}

.section-dark {
  background: var(--black);
  color: var(--white);
}

.section h2 {
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-dark h2 {
  color: var(--white);
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--gray-200);
  text-align: center;
}

.footer .logo {
  margin-bottom: var(--space-md);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-md);
}

.footer-links a {
  color: var(--gray-500);
  text-decoration: none;
  font-size: 13px;
}

.footer-links a:hover {
  color: var(--black);
}

.disclaimer {
  font-size: 11px;
  color: var(--gray-400);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.5;
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .section {
    padding: var(--space-xl) 0;
  }
}