/* Coffee Shot Timer - Base Styles */

/* ===== DESIGN TOKENS ===== */
:root {
  /* Light theme colors (from app Material3 theme) */
  --color-primary: #B8763D; /* Warm Caramel */
  --color-primary-container: #E8DDD0; /* Soft Beige */
  --color-secondary: #7BA5A3; /* Soft Teal */
  --color-background: #F2E6D3; /* Creamy Beige */
  --color-surface: #FAF5F0; /* Light Cream */
  --color-on-background: #2D1B0F; /* Rich Espresso */
  --color-on-surface: #2D1B0F; /* Rich Espresso */
  --color-on-surface-variant: #5D3A1A; /* Medium Coffee */
  --color-error: #D32F2F;
  --color-success: var(--color-secondary);
  
  /* Spacing system (4px base unit) */
  --space-xs: 4px;
  --space-s: 8px;
  --space-m: 16px;
  --space-l: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  
  /* Border radius */
  --radius-s: 4px;
  --radius-m: 8px;
  --radius-l: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 8px rgba(0,0,0,0.15);
  --shadow-xl: 0 8px 16px rgba(0,0,0,0.2);
  
  /* Typography scale (Material Design) */
  --font-size-xs: 12px;
  --font-size-s: 14px;
  --font-size-m: 16px;
  --font-size-l: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 48px;
  
  --line-height-xs: 1.5;
  --line-height-s: 1.4;
  --line-height-m: 1.5;
  --line-height-l: 1.4;
  --line-height-xl: 1.3;
  --line-height-2xl: 1.25;
  --line-height-3xl: 1.2;
  
  /* Font weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Container sizes */
  --container-xs: 480px;
  --container-s: 640px;
  --container-m: 768px;
  --container-l: 1024px;
  --container-xl: 1200px;
  
  /* Touch targets */
  --touch-target: 44px;
}

/* Dark theme */
[data-theme="dark"] {
  --color-primary: #E6B577; /* Light Caramel */
  --color-primary-container: #5D3A1A; /* Medium Coffee */
  --color-secondary: #9BC5C3; /* Warm Teal */
  --color-background: #1A0F08; /* Deep Brown */
  --color-surface: #2D1B0F; /* Rich Espresso */
  --color-on-background: #D4C4B0; /* Dark Cream */
  --color-on-surface: #D4C4B0; /* Dark Cream */
  --color-on-surface-variant: #E6B577; /* Light Caramel */
}

/* ===== RESET & BASE STYLES ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: var(--font-size-s);
  line-height: var(--line-height-s);
  font-weight: var(--font-weight-normal);
  color: var(--color-on-background);
  background-color: var(--color-background);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, .display {
  font-size: var(--font-size-3xl);
  line-height: var(--line-height-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-on-background);
  margin-bottom: var(--space-l);
}

h2, .headline-large {
  font-size: var(--font-size-2xl);
  line-height: var(--line-height-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-background);
  margin-bottom: var(--space-m);
}

h3, .headline-medium {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-on-background);
  margin-bottom: var(--space-m);
}

h4, .title-large {
  font-size: var(--font-size-l);
  line-height: var(--line-height-l);
  font-weight: var(--font-weight-medium);
  color: var(--color-on-background);
  margin-bottom: var(--space-s);
}

h5, .title-medium {
  font-size: var(--font-size-m);
  line-height: var(--line-height-m);
  font-weight: var(--font-weight-medium);
  color: var(--color-on-background);
  margin-bottom: var(--space-s);
}

p, .body-medium {
  font-size: var(--font-size-s);
  line-height: var(--line-height-s);
  color: var(--color-on-background);
  margin-bottom: var(--space-m);
}

.body-large {
  font-size: var(--font-size-m);
  line-height: var(--line-height-m);
}

.body-small {
  font-size: var(--font-size-xs);
  line-height: var(--line-height-xs);
  color: var(--color-on-surface-variant);
}

.label-large {
  font-size: var(--font-size-s);
  line-height: var(--line-height-s);
  font-weight: var(--font-weight-medium);
}

/* ===== LAYOUT & CONTAINERS ===== */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-m);
}

.container-narrow {
  max-width: var(--container-l);
}

.container-wide {
  max-width: 100%;
  padding: 0 var(--space-l);
}

/* Section spacing */
section {
  padding: var(--space-xl) 0;
}

.section-hero {
  padding: var(--space-xl) 0 var(--space-m) 0;
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-l);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Flexbox utilities */
.flex {
  display: flex;
}

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

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

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

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

.gap-s { gap: var(--space-s); }
.gap-m { gap: var(--space-m); }
.gap-l { gap: var(--space-l); }
.gap-xl { gap: var(--space-xl); }

/* ===== MOBILE SPECIFIC ===== */
@media (max-width: 480px) {
  /* Smaller font sizes on mobile */
  h1, .display {
    font-size: var(--font-size-2xl);
  }
  
  h2, .headline-large {
    font-size: var(--font-size-xl);
  }
  
  /* Adjust section padding */
  section {
    padding: var(--space-xl) 0;
  }
  
  .section-hero {
    padding: var(--space-2xl) 0;
  }
  
  /* Stack grid items on mobile */
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ===== RESPONSIVE BREAKPOINTS ===== */
/* Mobile first approach */
@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-l);
  }
  
  /* Typography scaling */
  h1, .display {
    font-size: clamp(var(--font-size-3xl), 4vw, 64px);
  }
  
  h2, .headline-large {
    font-size: clamp(var(--font-size-2xl), 3vw, 40px);
  }
  
  section {
    padding: var(--space-3xl) 0;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-xl);
  }
  
  section {
    padding: 80px 0;
  }
  
  .section-hero {
    padding: 120px 0;
  }
}

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

*:focus:not(:focus-visible) {
  outline: none;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 2px 4px rgba(0,0,0,0.4);
    --shadow-lg: 0 4px 8px rgba(0,0,0,0.5);
  }
}

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

/* Print styles */
@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
}