/* ==========================================================================
   base.css — Reset & Global Styles
   Huawai Vexis Inc Official Website

   Contains: universal reset, box-sizing, typography defaults,
   utility classes, and global element styling.
   Loaded after variables.css, before components.css.
   ========================================================================== */

/* ----------------------------------------------------------------------
   Modern CSS Reset
   ---------------------------------------------------------------------- */

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

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Prevent body scroll when mobile menu is open */
body.menu-open {
  overflow: hidden;
}

/* ----------------------------------------------------------------------
   Typography Defaults
   ---------------------------------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-heading);
  color: var(--color-text-dark);
}

h1 {
  font-size: var(--fs-hero);
  font-weight: var(--fw-extrabold);
}

h2 {
  font-size: var(--fs-h2);
}

h3 {
  font-size: var(--fs-h3);
}

p {
  line-height: var(--lh-body);
}

a {
  color: var(--color-brand);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-brand-dark);
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ----------------------------------------------------------------------
   Selection styling
   ---------------------------------------------------------------------- */

::selection {
  background-color: var(--color-brand);
  color: #FFFFFF;
}

/* ----------------------------------------------------------------------
   Focus visibility — accessibility
   ---------------------------------------------------------------------- */

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

/* ----------------------------------------------------------------------
   Utility Classes
   ---------------------------------------------------------------------- */

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

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

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

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

/* Spacing utilities */
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }

/* Display utilities */
.hidden {
  display: none !important;
}

.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;
}

/* Eyebrow text — small uppercase label above headings */
.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--color-brand);
}

/* Text gradient utility */
.text-gradient {
  background: var(--color-gradient-cta);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Section default spacing */
.section {
  padding-block: var(--space-7);
}

.section--tight {
  padding-block: var(--space-6);
}

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

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: var(--color-text-light);
}

.section--dark .eyebrow {
  color: var(--color-accent);
}

.section--alt {
  background-color: var(--color-bg-white);
}

/* ----------------------------------------------------------------------
   Scrollbar styling
   ---------------------------------------------------------------------- */

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

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

::-webkit-scrollbar-thumb {
  background: var(--color-text-muted-dark);
  border-radius: var(--radius-full);
}

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

/* ----------------------------------------------------------------------
   Respect 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;
  }
}