/* HearScribe Critical CSS - Above-the-fold styles */
/* This file contains only the essential styles needed for initial render */

/* Critical Design Tokens */
:root {
  --color-primary: hsl(210, 100%, 50%);
  --color-primary-dark: hsl(210, 100%, 40%);
  --color-bg: hsl(210, 20%, 98%);
  --color-surface: white;
  --color-text: hsl(210, 20%, 13%);
  --color-text-muted: hsl(210, 20%, 40%);
  --color-border: hsl(210, 20%, 90%);
  
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-4xl: 6rem;
  
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  --transition-base: 200ms ease-out;
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-blur: blur(10px);
}

/* Critical Base Styles */
* {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  box-sizing: border-box;
}

body {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* Critical Typography */
h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 0 0 var(--space-lg) 0;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0 0 var(--space-lg) 0;
}

p {
  margin: 0 0 var(--space-md) 0;
}

/* Critical Layout */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

/* Critical Navigation - Above the fold */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1100;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  height: 70px;
  transition: all var(--transition-base);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Critical Buttons - Above the fold */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  line-height: 1;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 44px;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

/* Critical Hero Styles - Above the fold */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 120px;
  padding-bottom: var(--space-4xl);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.hero-text {
  max-width: 600px;
}

.hero-headline {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

.hero-subtext {
  font-size: 1.25rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-xl);
}

/* Pricing Hero - Above the fold for pricing page */
.pricing-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.pricing-hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Critical Mobile Styles */
@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    text-align: center;
  }
  
  .hero-content {
    padding-top: 140px;
  }
  
  .container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
}

/* Hide non-critical content initially */
.features,
.pricing-cards,
.testimonials,
.faq-section {
  opacity: 0;
}

/* Show content when JS loads */
.js-enabled .features,
.js-enabled .pricing-cards,
.js-enabled .testimonials,
.js-enabled .faq-section {
  opacity: 1;
  transition: opacity 0.3s ease-out;
}

/* Logo transparency preservation */
.navbar-logo img,
img[src*="hearscribe-logo"],
img[alt*="HearScribe"] {
  background: transparent !important;
  background-color: transparent !important;
  backdrop-filter: none !important;
  mix-blend-mode: normal !important;
}