@custom-variant dark (&:is(.dark *));

:root {
  --font-size: 18px;
  
  /* Switch & Save EPOS Brand Colors - Vibrant & Bold */
  --brand-primary: #0A1929;
  --brand-primary-dark: #000814;
  --brand-primary-light: #1F2A37;
  --brand-accent: #1877F2;
  --brand-accent-dark: #0E5FCE;
  --brand-accent-light: #4A9FF5;
  --brand-cyan: #00D4FF;
  --brand-cyan-light: #7FECFF;
  --brand-yellow: #FFD60A;
  --brand-yellow-light: #FFE566;
  --brand-purple: #7C3AED;
  --brand-pink: #EC4899;
  --brand-green: #10B981;
  --brand-green-bright: #34D399;
  --brand-orange: #F97316;
  --brand-bg-light: #F0F9FF;
  --brand-bg-white: #FFFFFF;
  --brand-bg-gray: #F3F4F6;
  --brand-text-main: #0F172A;
  --brand-text-secondary: #475569;
  --brand-text-light: #64748B;
  --brand-success: #10B981;
  --brand-warning: #F59E0B;
  --brand-error: #EF4444;
  --brand-border: #E2E8F0;
  
  --background: #ffffff;
  --foreground: var(--brand-text-main);
  --card: #ffffff;
  --card-foreground: var(--brand-text-main);
  --popover: #ffffff;
  --popover-foreground: var(--brand-text-main);
  --primary: var(--brand-accent);
  --primary-foreground: #ffffff;
  --secondary: #F1F5F9;
  --secondary-foreground: var(--brand-primary);
  --muted: #F3F4F6;
  --muted-foreground: var(--brand-text-secondary);
  --accent: var(--brand-accent);
  --accent-foreground: #ffffff;
  --destructive: var(--brand-error);
  --destructive-foreground: #ffffff;
  --border: var(--brand-border);
  --input: var(--brand-border);
  --input-background: #FFFFFF;
  --switch-background: #CBD5E1;
  --font-weight-medium: 600;
  --font-weight-normal: 400;
  --ring: var(--brand-accent);
  --radius: 1rem;
  
  /* Typography scale - Larger & More Readable */
  --text-xs: 0.875rem;
  --text-sm: 1rem;
  --text-base: 1.125rem;
  --text-lg: 1.375rem;
  --text-xl: 1.5rem;
  --text-2xl: 1.875rem;
  --text-3xl: 2.5rem;
  --text-4xl: 3.5rem;
  --text-5xl: 4.5rem;
}

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

html {
  font-size: var(--font-size);
  scroll-behavior: smooth;
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-width: 100vw;
}

/* Typography */
h1 {
  font-size: var(--text-5xl);
  font-weight: 900;
  line-height: 1.1;
  color: var(--brand-primary);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: 1.15;
  color: var(--brand-accent);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.25;
  color: var(--brand-primary);
}

h4 {
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1.4;
  color: var(--brand-primary);
}

h5 {
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.4;
  color: var(--brand-primary);
}

h6 {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.5;
  color: var(--brand-primary);
}

p {
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.7;
  color: var(--brand-text-main);
  margin-bottom: 1rem;
}

a {
  color: var(--brand-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--brand-accent-dark);
}

/* Mobile heading adjustments */
@media (max-width: 768px) {
  h1 {
    font-size: var(--text-3xl);
  }

  h2 {
    font-size: var(--text-2xl);
  }

  h3 {
    font-size: var(--text-xl);
  }

  h4 {
    font-size: var(--text-lg);
  }

  p {
    font-size: var(--text-sm);
  }
}

/* Container */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 1200px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 0.75rem;
  }
}

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

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.py-1 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2 { padding-top: 1rem; padding-bottom: 1rem; }
.py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-4 { padding-top: 2rem; padding-bottom: 2rem; }
.py-5 { padding-top: 3rem; padding-bottom: 3rem; }
.py-6 { padding-top: 4rem; padding-bottom: 4rem; }
.py-8 { padding-top: 6rem; padding-bottom: 6rem; }

/* Hide scrollbar */
.scrollbar-hide::-webkit-scrollbar {
  display: none;
}

.scrollbar-hide {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Responsive utilities */
.mobile-only {
  display: block;
}

.desktop-only {
  display: none;
}

@media (min-width: 768px) {
  .mobile-only {
    display: none;
  }
  
  .desktop-only {
    display: block;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

@keyframes cartBounce {
  0%, 100% {
    transform: scale(1);
  }
  25% {
    transform: scale(1.2);
  }
  50% {
    transform: scale(0.9);
  }
  75% {
    transform: scale(1.1);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* Focus styles for accessibility */
*:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 2px;
}

/* Image optimization */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Lazy loading - Removed opacity issue */
img[loading="lazy"] {
  transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
  opacity: 1;
}