/* PaceMind Brand Identity CSS - Aligned with pacemind.app */
/* Inspired by Squarespace dynamic feel + Athletic brands (Brooks/Saucony) */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100..900&display=swap');

:root {
  /* Brand Colors - from pacemind.app */
  --brand-dark: #1A1A1A;
  --brand-light: #F0F0F0;
  --brand-orange: #FF6B1D;
  --brand-blue: #1E99CB;

  /* Semantic Colors */
  --color-bg-light: #FFFFFF;
  --color-bg-dark: #0E131F;
  --color-text-light: #1A1A1A;
  --color-text-dark: #F0F0F0;
  --color-accent-primary: #FF6B1D;
  --color-accent-secondary: #1E99CB;
  --color-success: #10B981;
  --color-warning: #F59E0B;

  /* Grays */
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #E5E5E5;
  --gray-300: #D4D4D4;
  --gray-400: #A3A3A3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;
  --spacing-3xl: 8rem;

  /* Sizing */
  --container-max: 1400px;
  --container-narrow: 800px;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-xl: 32px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 700ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-blur: blur(20px);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-light: var(--brand-dark);
    --color-text-light: var(--brand-light);
  }
}

/* ==========================================================================
   FIXED HEADER NAVIGATION - Universal across all pages
   ========================================================================== */

.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  padding: 1rem 2rem;
  transition: all 0.3s ease;
}

.main-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.main-nav {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-logo-icon {
  height: 32px;
  width: auto;
}

.nav-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-left: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--gray-300);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a:not(.cta-btn):hover {
  color: var(--brand-orange);
}

.nav-links a:not(.cta-btn)::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-orange);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.nav-links a:not(.cta-btn):hover::after {
  transform: scaleX(1);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: white;
  transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .main-header {
    padding: 1rem;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(26, 26, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.1rem;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-light);
  background: var(--color-bg-light);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
}

p {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.7;
  color: var(--gray-700); /* Better contrast - was gray-600 */
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Hero Section - Full Screen Video/Image */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: white;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(26, 26, 26, 0.95) 0%,
    rgba(26, 26, 26, 0.6) 50%,
    rgba(26, 26, 26, 0.3) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 1000px;
  padding: var(--spacing-xl);
  animation: heroFadeIn var(--transition-smooth) ease-out;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-logo {
  width: clamp(80px, 15vw, 150px);
  height: auto;
  margin-bottom: var(--spacing-lg);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

.hero h1 {
  color: white;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--brand-orange);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  color: var(--brand-orange);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* Platform Badges */
.platform-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  margin: var(--spacing-lg) 0;
}

.platform-badge {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: var(--transition-base);
}

.platform-badge:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

/* CTA Buttons */
.cta-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-xl);
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--border-radius-md);
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
  text-transform: none;
  letter-spacing: -0.01em;
}

.cta-btn-primary {
  background: var(--brand-orange);
  color: white;
  box-shadow: 0 4px 20px rgba(255, 107, 29, 0.3);
}

.cta-btn-primary:hover {
  background: #E55A0D;
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 107, 29, 0.4);
}

.cta-btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  color: white;
  border: 2px solid var(--glass-border);
}

.cta-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-3px);
}

.cta-btn-ghost {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.cta-btn-ghost:hover {
  background: white;
  color: var(--brand-dark);
}

/* Sections */
section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  margin-bottom: var(--spacing-md);
  color: var(--brand-dark);
}

/* Section titles on dark backgrounds need white color */
section:has(.feature-grid) .section-title,
section:has(.platform-grid) .section-title {
  color: white;
}

/* Exceptions: Some sections have light backgrounds and need dark titles */
section#features .section-title,
section#science .section-title {
  color: var(--brand-dark);
}

/* Dark background sections need white titles */
section#pricing .section-title,
section#download .section-title {
  color: white;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--brand-orange);
  line-height: 1.6;
  font-weight: 500;
}

/* Science section: 4 cards in a row on desktop */
section#science .feature-grid {
  grid-template-columns: repeat(4, 1fr);
}

/* Science cards: subtle gradient backgrounds */
section#science .glass-card {
  position: relative;
  overflow: hidden;
}

section#science .glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.08;
  z-index: 0;
  border-radius: inherit;
  transition: opacity var(--transition-base);
}

section#science .glass-card:hover::before {
  opacity: 0.12;
}

/* Individual gradients for each card */
section#science .glass-card:nth-child(1)::before {
  background: linear-gradient(135deg, #FF6B1D 0%, #1E99CB 100%);
}

section#science .glass-card:nth-child(2)::before {
  background: linear-gradient(135deg, #1E99CB 0%, #FF6B1D 100%);
}

section#science .glass-card:nth-child(3)::before {
  background: linear-gradient(135deg, #FF6B1D 0%, #764BA2 100%);
}

section#science .glass-card:nth-child(4)::before {
  background: linear-gradient(135deg, #667EEA 0%, #FF6B1D 100%);
}

/* Ensure content stays above gradient */
section#science .glass-card > * {
  position: relative;
  z-index: 1;
}

/* Science card headings in PaceMind orange */
section#science .glass-card h3 {
  color: var(--brand-orange);
}

@media (max-width: 1024px) {
  section#science .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  section#science .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* Scroll Reveal Animation */
.scroll-reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

/* Feature Cards with Photo Backgrounds */
.feature-card {
  position: relative;
  min-height: 400px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: var(--transition-base);
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(26, 26, 26, 0.95) 0%,
    rgba(26, 26, 26, 0.7) 50%,
    rgba(26, 26, 26, 0.3) 100%
  );
  z-index: 1;
  transition: var(--transition-base);
}

.feature-card:hover::before {
  background: linear-gradient(
    to top,
    rgba(26, 26, 26, 0.85) 0%,
    rgba(26, 26, 26, 0.6) 50%,
    rgba(26, 26, 26, 0.2) 100%
  );
}

.feature-card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform var(--transition-smooth);
  z-index: 0;
}

.feature-card:hover .feature-card-bg {
  transform: scale(1.05);
}

.feature-card-content {
  position: relative;
  z-index: 2;
  padding: var(--spacing-lg);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: white;
}

.feature-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: fit-content;
}

.badge-unique {
  background: linear-gradient(135deg, #FA709A 0%, #FEE140 100%);
  animation: pulse 2s ease-in-out infinite;
}

.badge-ai {
  background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
  animation: pulse 2s ease-in-out infinite;
}

.badge-app {
  background: var(--brand-orange);
}

.badge-pwa {
  background: var(--brand-blue);
}

.badge-shared {
  background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
}

.badge-premium {
  background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(250, 112, 154, 0.7);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 0 0 8px rgba(250, 112, 154, 0);
  }
}

.feature-card h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-sm);
  color: white;
}

.feature-card p {
  color: rgba(255, 255, 255, 0.95); /* Better contrast - was 0.9 */
  margin-bottom: var(--spacing-md);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3); /* Added shadow for readability */
}

.feature-card .cta-link {
  color: var(--brand-orange);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: var(--transition-fast);
}

.feature-card .cta-link:hover {
  gap: var(--spacing-sm);
}

/* Glassmorphism Cards */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition-base);
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* Pricing Cards */
.pricing-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1100px;
  margin: var(--spacing-xl) auto 0;
}

.pricing-card {
  background: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-base);
  position: relative;
  border: 2px solid transparent;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
  border-color: var(--brand-orange);
  transform: scale(1.05);
}

.pricing-card.featured::before {
  content: 'MOST POPULAR';
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-orange);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.pricing-tier {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  color: var(--brand-dark);
}

.pricing-price {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--brand-orange);
  margin-bottom: var(--spacing-xs);
  line-height: 1;
}

.pricing-price span {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-600); /* Better contrast - was gray-500 */
}

.pricing-features {
  list-style: none;
  margin: var(--spacing-lg) 0;
}

.pricing-features li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  color: #333;
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

/* Screenshot Gallery - Masonry Style */
.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.screenshot-item {
  position: relative;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
  cursor: pointer;
}

.screenshot-item:hover {
  transform: scale(1.03) rotate(1deg);
  box-shadow: var(--shadow-xl);
  z-index: 10;
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-slow);
}

.screenshot-item:hover img {
  filter: brightness(1.1);
}

/* Footer */
footer {
  background: var(--brand-dark);
  color: var(--brand-light);
  padding: var(--spacing-2xl) var(--spacing-md);
  text-align: center;
}

footer a {
  color: var(--brand-light);
  opacity: 0.8;
  transition: var(--transition-fast);
}

footer a:hover {
  opacity: 1;
  color: var(--brand-orange);
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 5rem;
  }

  section {
    padding: var(--spacing-2xl) 0;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .pricing-container {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: scale(1);
  }

  .cta-container {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-btn {
    width: 100%;
    justify-content: center;
  }
}

/* Loading State */
.loading {
  opacity: 0;
  transition: opacity var(--transition-base);
}

.loaded {
  opacity: 1;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }