/**
 * The Language Hub - Base Styles
 * Resets, Typography, Layout Foundation
 *
 * @version 1.0.0
 */

/* ============================================
 * CSS RESET - Modern Reset
 * ============================================ */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* Remove default link styles */
a {
  color: inherit;
  text-decoration: none;
}

/* Reset button styles */
button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  background: none;
  border: none;
  outline: none;
}

/* Reset form elements */
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

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

/* Inherit fonts for form elements */
input,
button,
textarea,
select {
  font: inherit;
}

/* Remove animations for reduced motion preference */
@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;
  }
}

/* ============================================
 * TYPOGRAPHY - Base Styles
 * ============================================ */

/* Headings */
h1, .h1,
h2, .h2,
h3, .h3,
h4, .h4,
h5, .h5,
h6, .h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-primary);
}

h1, .h1 {
  font-size: var(--font-size-6xl);
  margin-bottom: var(--space-4);
}

h2, .h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

h3, .h3 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-3);
}

h4, .h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-3);
}

h5, .h5 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

h6, .h6 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

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

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

/* Text utilities */
.text-large {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-relaxed);
}

.text-small {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
}

.text-xs {
  font-size: var(--font-size-xs);
  line-height: var(--line-height-normal);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  font-weight: var(--font-weight-semibold);
}

/* Text accent - Yellow highlight */
.text-accent {
  color: var(--color-primary);
}

/* Text highlight - Markeerstift effect */
.text-highlight {
  position: relative;
  display: inline-block;
}

.text-highlight::after {
  content: '';
  position: absolute;
  bottom: 0.1em;
  left: -0.1em;
  right: -0.1em;
  height: 0.4em;
  background: var(--color-primary);
  opacity: 0.3;
  z-index: -1;
}

/* Section Labels */
.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  padding: var(--space-1) var(--space-2);
  background: var(--color-primary-light);
  border-left: 3px solid var(--color-primary);
}

/* Section Title */
.section-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-3);
}

/* Section Subtitle */
.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-6);
}

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

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

/* Strong and emphasis */
strong, b {
  font-weight: var(--font-weight-semibold);
}

em, i {
  font-style: italic;
}

/* ============================================
 * LAYOUT - Container System
 * ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-mobile);
  padding-right: var(--container-padding-mobile);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--container-padding-tablet);
    padding-right: var(--container-padding-tablet);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--container-padding-desktop);
    padding-right: var(--container-padding-desktop);
  }
}

.container-wide {
  max-width: var(--container-wide);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-mobile);
  padding-right: var(--container-padding-mobile);
}

@media (min-width: 768px) {
  .container-wide {
    padding-left: var(--container-padding-tablet);
    padding-right: var(--container-padding-tablet);
  }
}

.container-narrow {
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-mobile);
  padding-right: var(--container-padding-mobile);
}

/* ============================================
 * SECTIONS - Base Section Styling
 * ============================================ */

.section {
  padding-top: var(--section-padding-mobile);
  padding-bottom: var(--section-padding-mobile);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--section-padding-tablet);
    padding-bottom: var(--section-padding-tablet);
  }
}

@media (min-width: 1024px) {
  .section {
    padding-top: var(--section-padding-desktop);
    padding-bottom: var(--section-padding-desktop);
  }
}

.section--dark {
  background-color: var(--color-bg-primary);
}

.section--light {
  background-color: var(--color-bg-secondary);
}

/* ============================================
 * GRID SYSTEM
 * ============================================ */

.grid {
  display: grid;
  gap: var(--gap-4);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--gap-4);
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap-6);
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--gap-4);
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap-6);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--gap-4);
}

@media (min-width: 480px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

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

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================
 * UTILITY CLASSES
 * ============================================ */

/* Screen reader only */
.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;
}

/* Hide/Show */
.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

/* Text alignment */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

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

/* Margin utilities */
.mt-auto {
  margin-top: auto;
}

.mb-auto {
  margin-bottom: auto;
}

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

::selection {
  background-color: var(--color-primary);
  color: var(--color-text-on-accent);
}

::-moz-selection {
  background-color: var(--color-primary);
  color: var(--color-text-on-accent);
}

/* ============================================
 * FOCUS STYLES - Accessibility
 * ============================================ */

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

/* ============================================
 * SCROLLBAR STYLING (Dark Theme)
 * ============================================ */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-text-tertiary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-text-tertiary) var(--color-bg-secondary);
}