/* Perkalate Mobile App - Premium Loyalty Platform */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap');

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

/* Root Variables - Perkalate Dark Mode Theme */
:root {
  /* Backgrounds - Dark Mode First */
  --background: #0a0a0b;
  --background-secondary: #111116;
  --background-tertiary: #1a1a22;
  --background-quaternary: #252532;
  
  /* Surfaces */
  --surface: #111116;
  --surface-elevated: #1a1a22;
  --surface-overlay: rgba(17, 17, 22, 0.95);
  --surface-glass: rgba(255, 255, 255, 0.02);
  
  /* Foreground */
  --foreground: #ffffff;
  --foreground-secondary: #e4e4e7;
  --foreground-muted: #a1a1aa;
  --foreground-disabled: #71717a;
  
  /* Perkalate Brand - Premium Purple/Blue */
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --primary-dark: #6d28d9;
  --primary-light: rgba(139, 92, 246, 0.1);
  --primary-glow: rgba(139, 92, 246, 0.4);
  
  /* Secondary Brand - Teal Accent */
  --secondary: #06b6d4;
  --secondary-hover: #0891b2;
  --secondary-light: rgba(6, 182, 212, 0.1);
  
  /* Success/Positive */
  --success: #22c55e;
  --success-light: rgba(34, 197, 94, 0.1);
  --success-dark: #16a34a;
  
  /* Danger/Negative */
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.1);
  --danger-dark: #dc2626;
  
  /* Warning */
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.1);
  
  /* Neutral Grays */
  --gray-50: #fafafa;
  --gray-100: #f4f4f5;
  --gray-800: #27272a;
  --gray-900: #18181b;
  
  /* Borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --border-accent: var(--primary);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.8);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.8), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px var(--primary-glow);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Monaco, monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  
  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  
  /* Spacing - Mobile First */
  --space-0: 0;
  --space-1: 0.25rem;    /* 4px */
  --space-2: 0.5rem;     /* 8px */
  --space-3: 0.75rem;    /* 12px */
  --space-4: 1rem;       /* 16px */
  --space-5: 1.25rem;    /* 20px */
  --space-6: 1.5rem;     /* 24px */
  --space-8: 2rem;       /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  --space-20: 5rem;      /* 80px */
  
  /* Border Radius */
  --radius-sm: 0.375rem;  /* 6px */
  --radius: 0.5rem;       /* 8px */
  --radius-md: 0.75rem;   /* 12px */
  --radius-lg: 1rem;      /* 16px */
  --radius-xl: 1.5rem;    /* 24px */
  --radius-2xl: 2rem;     /* 32px */
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 350ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Base Styles */
html {
  font-family: var(--font-sans);
  line-height: var(--leading-normal);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  background: var(--background);
  color: var(--foreground);
  font-size: var(--text-base);
  min-height: 100vh;
  min-height: 100dvh; /* Dynamic viewport height for mobile */
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* Mobile App Container */
.app {
  max-width: 428px; /* iPhone 13 Pro Max width */
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--background);
  position: relative;
  overflow: hidden;
}

/* Screen Container */
.screen {
  padding: var(--space-4);
  padding-bottom: calc(var(--space-20) + env(safe-area-inset-bottom, 0));
  min-height: 100vh;
  min-height: 100dvh;
}

/* Navigation */
.nav-bar {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 428px;
  z-index: 1000;
  background: var(--surface-overlay);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: env(safe-area-inset-top, 0) var(--space-4) var(--space-4);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
}

.nav-title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--foreground);
}

.nav-back {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--foreground);
  text-decoration: none;
  transition: all var(--transition-normal);
}

.nav-back:hover {
  background: var(--background-tertiary);
  transform: scale(1.05);
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 428px;
  background: var(--surface-overlay);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom, 0));
  z-index: 1000;
}

.bottom-nav-content {
  display: flex;
  justify-content: space-around;
  align-items: center;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2);
  color: var(--foreground-muted);
  text-decoration: none;
  transition: all var(--transition-normal);
  border-radius: var(--radius);
  min-width: 60px;
}

.nav-item.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-item:hover {
  color: var(--foreground);
  background: var(--surface-glass);
}

.nav-item i {
  font-size: var(--text-xl);
}

.nav-item span {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
}

/* Content with top padding for nav */
.content {
  padding-top: calc(60px + env(safe-area-inset-top, 0));
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card-hover {
  transition: all var(--transition-normal);
}

.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

.card-glow {
  position: relative;
}

.card-glow::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  background: linear-gradient(45deg, var(--primary), var(--secondary), var(--primary));
  border-radius: inherit;
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card-glow:hover::before {
  opacity: 0.5;
}

.card-header {
  padding: var(--space-5) var(--space-5) var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-content {
  padding: 0 var(--space-5) var(--space-5);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border: none;
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  min-height: 48px;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
  background: var(--surface-elevated);
  color: var(--foreground);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background: var(--background-tertiary);
  border-color: var(--primary);
}

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

.btn-ghost:hover {
  background: var(--primary-light);
  border-color: var(--primary);
}

.btn-full {
  width: 100%;
}

.btn-lg {
  padding: var(--space-5) var(--space-8);
  min-height: 56px;
  font-size: var(--text-lg);
}

/* Typography */
.heading-1 {
  font-size: var(--text-4xl);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  color: var(--foreground);
  margin-bottom: var(--space-2);
}

.heading-2 {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--foreground);
  margin-bottom: var(--space-2);
}

.heading-3 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
  color: var(--foreground);
  margin-bottom: var(--space-2);
}

.text-balance {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  font-family: var(--font-mono);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: var(--leading-tight);
}

.text-muted {
  color: var(--foreground-muted);
}

.text-success {
  color: var(--success);
}

.text-danger {
  color: var(--danger);
}

/* Grid & Layout */
.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Utilities */
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

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

/* Premium Components */
.balance-card {
  background: linear-gradient(135deg, var(--surface-elevated) 0%, var(--background-tertiary) 100%);
  border: 1px solid var(--border-strong);
  position: relative;
  overflow: hidden;
}

.balance-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--primary) 50%, transparent 100%);
}

.brand-card {
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: all var(--transition-normal);
}

.brand-card:hover {
  border-color: var(--primary);
  background: var(--background-tertiary);
}

.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: var(--background-quaternary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--foreground-muted);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-3);
}

.points-display {
  font-family: var(--font-mono);
  font-weight: var(--font-semibold);
  font-size: var(--text-lg);
  color: var(--primary);
}

.activity-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border);
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

/* Wallet Pass Preview */
.wallet-pass {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--border-strong);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.wallet-pass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.pass-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.pass-logo {
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pass-code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--foreground-muted);
  background: var(--background-quaternary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.animate-slide-up {
  animation: slideUp var(--transition-normal) ease-out;
}

.animate-fade-in {
  animation: fadeIn var(--transition-normal) ease-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* Form Elements */
.input {
  width: 100%;
  padding: var(--space-4);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--foreground);
  font-size: var(--text-base);
  transition: all var(--transition-normal);
}

.input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.input::placeholder {
  color: var(--foreground-muted);
}

/* Loading States */
.skeleton {
  background: linear-gradient(90deg, var(--surface) 25%, var(--background-tertiary) 50%, var(--surface) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--radius);
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Status Indicators */
.status-connected {
  color: var(--success);
}

.status-disconnected {
  color: var(--danger);
}

.status-pending {
  color: var(--warning);
}

/* Responsive adjustments for larger screens */
@media (min-width: 480px) {
  .app {
    box-shadow: var(--shadow-lg);
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible for keyboard navigation */
.btn:focus-visible,
.nav-item:focus-visible,
.input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}