/* ==========================================================================
   NEUMORPHISM DESIGN SYSTEM - OFF-WHITE & BORDÔ (WINE)
   Guia de Vinhos por Sommelier Ângelo Luchese Jr.
   Ultra-lightweight, 100% Vanilla CSS3 with zero external dependencies
   ========================================================================== */

:root {
  /* Color Tokens */
  --bg-color: #F5F3ED;          /* Off-white velvet base background */
  --surface-color: #F5F3ED;     /* Neumorphic element surface color */
  --surface-alt: #EFECE4;       /* Slightly deeper background for contrasts */
  
  /* Primary Accent - Bordô / Burgundy / Wine */
  --primary: #6E1A24;           /* Deep burgundy red */
  --primary-hover: #56131B;     /* Darker burgundy on hover */
  --primary-light: #8E2331;     /* Vibrant wine accent */
  --primary-glow: rgba(110, 26, 36, 0.25);
  
  /* Secondary Accent - Gold / Rating */
  --accent-gold: #C5A059;       /* Sommelier gold */
  --accent-gold-dark: #A4813B;
  
  /* Text & Contrast */
  --text-main: #2A2325;         /* High-contrast charcoal text */
  --text-muted: #665D5F;        /* Muted secondary body text */
  --text-light: #8C8284;        /* Caption text */
  --text-on-primary: #FFFFFF;   /* Crisp white text for primary CTA */

  /* Neumorphic Shadow Engine */
  --shadow-distance: 8px;
  --shadow-blur: 16px;
  --shadow-dark: #E0DDD4;       /* Dark shadow component */
  --shadow-light: #FFFFFF;      /* Light highlight component */

  /* Convex / Extruded Neumorphic Shadows */
  --neu-flat: 
    8px 8px 16px var(--shadow-dark), 
    -8px -8px 16px var(--shadow-light);

  --neu-flat-sm: 
    4px 4px 10px var(--shadow-dark), 
    -4px -4px 10px var(--shadow-light);

  --neu-flat-lg: 
    12px 12px 24px var(--shadow-dark), 
    -12px -12px 24px var(--shadow-light);

  /* Concave / Pressed Inset Neumorphic Shadows */
  --neu-inset: 
    inset 4px 4px 8px var(--shadow-dark), 
    inset -4px -4px 8px var(--shadow-light);

  --neu-inset-deep: 
    inset 6px 6px 12px var(--shadow-dark), 
    inset -6px -6px 12px var(--shadow-light);

  /* Bordô Accent Neumorphic Button Shadows */
  --neu-button-primary: 
    6px 6px 14px var(--primary-glow),
    6px 6px 16px var(--shadow-dark),
    -6px -6px 16px var(--shadow-light);

  /* Typography Fonts */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Spacing Scale (4/8dp system) */
  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;

  /* Border Radii */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Motion Timing */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Base Neumorphic Cards & Surfaces */
.neu-card {
  background: var(--surface-color);
  border-radius: var(--radius-md);
  box-shadow: var(--neu-flat);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.neu-card-inset {
  background: var(--surface-color);
  border-radius: var(--radius-md);
  box-shadow: var(--neu-inset);
  border: 1px solid rgba(225, 221, 212, 0.5);
}

.neu-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--neu-flat-lg);
}

/* Neumorphic Buttons */
.neu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition-fast);
  touch-action: manipulation;
  user-select: none;
  min-height: 52px;
}

.neu-btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--text-on-primary);
  box-shadow: var(--neu-button-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.neu-btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
  transform: translateY(-1px);
  box-shadow: 
    8px 8px 20px var(--primary-glow),
    8px 8px 20px var(--shadow-dark),
    -8px -8px 20px var(--shadow-light);
}

.neu-btn-primary:active {
  transform: translateY(1px);
  box-shadow: 
    inset 3px 3px 6px rgba(0, 0, 0, 0.3),
    inset -3px -3px 6px rgba(255, 255, 255, 0.2);
}

.neu-btn-secondary {
  background: var(--surface-color);
  color: var(--primary);
  box-shadow: var(--neu-flat);
}

.neu-btn-secondary:hover {
  box-shadow: var(--neu-flat-lg);
  color: var(--primary-hover);
}

.neu-btn-secondary:active {
  box-shadow: var(--neu-inset);
}

/* Neumorphic Badges & Pills */
.neu-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  background: var(--surface-color);
  box-shadow: var(--neu-flat-sm);
  color: var(--primary);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.neu-badge-gold {
  color: var(--accent-gold-dark);
  box-shadow: var(--neu-flat-sm);
}

/* Focus States for Accessibility */
.neu-btn:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--primary-light);
  outline-offset: 3px;
}