/*-----------------------------------------------------------------------------------
	Hintlab Base Styles
	About: Reset, normalize and base styles for Hintlab.org
	Author: Mateusz Pozar
	Version: 2.0
-----------------------------------------------------------------------------------*/

/* Reset & Normalize */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-family-primary);
  line-height: var(--line-height-normal);
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

body {
  margin: 0;
  padding: 0;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip Links for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: var(--color-secondary);
  padding: 8px;
  z-index: var(--z-tooltip);
  text-decoration: none;
  border-radius: var(--border-radius-md);
}

.skip-link:focus {
  top: 6px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: var(--space-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-top: 0;
  margin-bottom: var(--space-md);
  line-height: var(--line-height-relaxed);
}

/* Links */
a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover,
a:focus {
  color: var(--color-text-hover);
  text-decoration: none;
}

/* Lists */
ul, ol {
  margin-top: 0;
  margin-bottom: var(--space-md);
  padding-left: var(--space-xl);
}

li {
  margin-bottom: var(--space-xs);
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

/* Forms */
button,
input,
optgroup,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  margin: 0;
}

button {
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: all var(--transition-normal);
}

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.page-container {
  overflow: hidden; /* Prevents unwanted scroll space when scroll FX used */
}

/* Screen Reader Only */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Responsive Utilities */
@media (max-width: 575.98px) {
  .container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
  
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
}

/* High contrast mode adjustments */
@media (prefers-contrast: high) {
  *:focus,
  *:focus-visible {
    outline-width: 3px;
  }
}

/* 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;
  }
}