/**
 * Snaxbox v2 - Base Styles
 * CSS Reset & Typography
 */

/* ========================================
   CSS RESET
   ======================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-base);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  min-height: 100dvh; /* Dynamic viewport height for mobile */
}

/* Remove list styles */
ul,
ol {
  list-style: none;
}

/* Images */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Form elements inherit font */
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

/* Remove button styles */
button {
  background: none;
  border: none;
  cursor: pointer;
}

/* Tables */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* Prevent textarea resize */
textarea {
  resize: vertical;
}

/* Remove anchor underlines by default */
a {
  text-decoration: none;
  color: inherit;
}

/* ========================================
   TYPOGRAPHY - HEADINGS
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-gray-900);
}

h1 {
  font-size: var(--text-4xl);
  letter-spacing: var(--tracking-tight);
}

h2 {
  font-size: var(--text-3xl);
  letter-spacing: var(--tracking-tight);
}

h3 {
  font-size: var(--text-2xl);
}

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

h5 {
  font-size: var(--text-lg);
}

h6 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
}

/* Responsive headings */
@media (max-width: 640px) {
  h1 {
    font-size: var(--text-3xl);
  }

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

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

/* ========================================
   TYPOGRAPHY - BODY TEXT
   ======================================== */

p {
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

p:last-child {
  margin-bottom: 0;
}

/* Links */
a {
  color: var(--color-primary-500);
  transition: var(--transition-colors);
}

a:hover {
  color: var(--color-primary-600);
}

a:active {
  color: var(--color-primary-700);
}

/* Inline text styles */
strong,
b {
  font-weight: var(--font-bold);
}

em,
i {
  font-style: italic;
}

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

mark {
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
  padding: 0 var(--space-1);
  border-radius: var(--radius-sm);
}

/* Code */
code {
  font-family: var(--font-family-mono);
  font-size: 0.875em;
  background-color: var(--color-gray-100);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-family-mono);
  font-size: var(--text-sm);
  background-color: var(--color-gray-900);
  color: var(--color-gray-100);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

/* Blockquote */
blockquote {
  border-left: 4px solid var(--color-primary-500);
  padding-left: var(--space-4);
  margin: var(--space-4) 0;
  color: var(--color-gray-600);
  font-style: italic;
}

/* Horizontal rule */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

/* ========================================
   ACCESSIBILITY - FOCUS STYLES
   ======================================== */

/* Remove default outline */
:focus {
  outline: none;
}

/* Custom focus ring for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Focus ring for buttons and interactive elements */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary-500);
  color: var(--color-white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ========================================
   SELECTION STYLING
   ======================================== */

::selection {
  background-color: var(--color-primary-200);
  color: var(--color-primary-900);
}

::-moz-selection {
  background-color: var(--color-primary-200);
  color: var(--color-primary-900);
}

/* ========================================
   SCROLLBAR STYLING
   ======================================== */

/* Webkit browsers */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-300);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-400);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-gray-300) var(--color-gray-100);
}

/* ========================================
   REDUCED MOTION
   ======================================== */

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

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  body {
    background: white;
    color: black;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  .no-print {
    display: none !important;
  }
}