/* CSS Variables for Theming */
:root {
  /* Brand Colors */
  --shopify-green: #96bf48;
  --claude-coral: #e87b5c;
  --electric-blue: #00d4ff;
  --neon-purple: #a78bfa;

  /* Typography */
  --font-display: 'Archivo', sans-serif;
  --font-display-weight: 700;
  --font-body: 'Inter', sans-serif;

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

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* Dark Theme (Default) */
[data-theme='dark'] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #0a0f1a;
  --text-primary: #f8f9fa;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --toggle-track-bg: #1e293b;
  --toggle-track-border: #1e293b;
  --toggle-thumb-bg: #f8f9fa;
  --toggle-icon-color: #1e293b;
}

/* Light Theme */
[data-theme='light'] {
  --bg-primary: #f8f9fa;
  --bg-secondary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.9);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --toggle-track-bg: #f8f9fa;
  --toggle-track-border: #cbd5e1;
  --toggle-thumb-bg: #0f172a;
  --toggle-icon-color: #f8f9fa;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Navigation */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: transparent;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background-color var(--transition-normal);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: var(--font-display-weight);
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-logo:hover {
  color: var(--electric-blue);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.theme-toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  position: relative;
  width: 52px;
  height: 28px;
  background-color: var(--toggle-track-bg);
  border: 1px solid var(--toggle-track-border);
  border-radius: 14px;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 22px;
  height: 22px;
  background-color: var(--toggle-thumb-bg);
  border-radius: 50%;
  transition:
    transform var(--transition-fast),
    background-color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--toggle-icon-color);
}

/* Light mode - thumb moves right */
[data-theme='light'] .toggle-thumb {
  transform: translateX(24px);
}

/* Icon visibility */
.icon-sun,
.icon-moon {
  position: absolute;
}

[data-theme='dark'] .icon-sun {
  display: block;
}

[data-theme='dark'] .icon-moon {
  display: none;
}

[data-theme='light'] .icon-sun {
  display: none;
}

[data-theme='light'] .icon-moon {
  display: block;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl) var(--space-md);
}

.hero-content {
  max-width: 700px;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: var(--font-display-weight);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  line-height: 1.1;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 500;
  color: var(--electric-blue);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
  min-height: 48px;
}

.btn-primary {
  background-color: var(--shopify-green);
  color: #0f172a;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(150, 191, 72, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Section Styles */
.apps,
.about {
  padding: var(--space-3xl) var(--space-md);
}

.section-title {
  font-family: var(--font-display);
  font-weight: var(--font-display-weight);
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  text-align: center;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--space-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Apps Grid */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  max-width: 800px;
  margin: 0 auto;
}

.app-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal);
  border: 1px solid transparent;
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: var(--electric-blue);
  box-shadow: 0 12px 32px rgba(0, 212, 255, 0.1);
}

.app-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-lg);
  border: 2px solid var(--electric-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
}

.app-icon span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* App Icon Placeholders */
.app-icon-picklescore {
  background: linear-gradient(135deg, var(--electric-blue) 0%, #0891b2 100%);
  border-color: var(--electric-blue);
}

.app-icon-flow {
  background: linear-gradient(135deg, var(--neon-purple) 0%, #7c3aed 100%);
  border-color: var(--neon-purple);
}

.app-name {
  font-family: var(--font-display);
  font-weight: var(--font-display-weight);
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.app-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xs);
}

.app-timeline {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.btn-notify {
  width: 100%;
  margin-top: var(--space-sm);
}

.apps-tagline {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--text-secondary);
  text-align: center;
  margin-top: var(--space-xl);
  line-height: 1.8;
}

/* About Section */
.about {
  background-color: var(--bg-card);
  transition: background-color var(--transition-normal);
}

.about .section-title {
  margin-bottom: var(--space-xl);
}

.about-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.about-content p:last-child {
  margin-bottom: 0;
}

/* Contact Section */
.contact {
  padding: var(--space-3xl) var(--space-md);
}

.contact .section-title {
  margin-bottom: var(--space-xl);
}

.contact-content {
  max-width: 500px;
  margin: 0 auto;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--electric-blue);
  text-decoration: none;
  font-size: 1.125rem;
  transition: color var(--transition-fast);
}

.contact-link:hover {
  color: var(--claude-coral);
}

.contact-link svg {
  flex-shrink: 0;
}

/* Footer */
.footer {
  padding: var(--space-xl) var(--space-md);
  border-top: 1px solid var(--bg-secondary);
}

.footer-content {
  text-align: center;
}

.footer-copyright {
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.footer-location {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.footer-email {
  font-size: 0.875rem;
  color: var(--electric-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-email:hover {
  color: var(--claude-coral);
}

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding-top: calc(var(--space-3xl) + 60px);
  }

  .apps,
  .about {
    padding: var(--space-2xl) var(--space-md);
  }

  .app-card {
    padding: var(--space-lg);
  }
}

/* Focus States for Accessibility */
.btn:focus-visible,
.theme-toggle:focus-visible,
.nav-logo:focus-visible,
.footer-email:focus-visible {
  outline: 2px solid var(--electric-blue);
  outline-offset: 2px;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}