/* ==========================================================================
   BIZWAVE ERP — BASE CSS (Reset, Typography, Utilities)
   ========================================================================== */

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

html {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
}

body {
  font-family: var(--font);
  font-size: var(--fs-md);
  line-height: var(--lh-base);
  color: var(--c-text);
  background-color: var(--c-bg);
  min-height: 100vh;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--c-text);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-lg); }

p {
  margin-bottom: var(--sp-2);
}

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

a:hover {
  color: var(--c-link-hover);
  text-decoration: underline;
}

img, svg {
  vertical-align: middle;
}

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

/* Accessibility: Focus visible */
:focus-visible {
  outline: 2px solid var(--c-link);
  outline-offset: 2px;
}

.visually-hidden {
  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;
}

/* Flex utilities */
.u-flex { display: flex; }
.u-flex-col { display: flex; flex-direction: column; }
.u-flex-center { display: flex; align-items: center; justify-content: center; }
.u-flex-between { display: flex; align-items: center; justify-content: space-between; }
.u-flex-align-center { display: flex; align-items: center; }
.u-flex-wrap { display: flex; flex-wrap: wrap; }
.u-gap-1 { gap: var(--sp-1); }
.u-gap-2 { gap: var(--sp-2); }
.u-gap-3 { gap: var(--sp-3); }
.u-gap-4 { gap: var(--sp-4); }

/* Grid utilities */
.u-grid { display: grid; }
.u-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.u-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
.u-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }

/* Spacing utilities */
.u-m-0 { margin: 0; }
.u-mt-1 { margin-top: var(--sp-1); }
.u-mt-2 { margin-top: var(--sp-2); }
.u-mt-3 { margin-top: var(--sp-3); }
.u-mt-4 { margin-top: var(--sp-4); }
.u-mb-1 { margin-bottom: var(--sp-1); }
.u-mb-2 { margin-bottom: var(--sp-2); }
.u-mb-3 { margin-bottom: var(--sp-3); }
.u-mb-4 { margin-bottom: var(--sp-4); }

.u-p-2 { padding: var(--sp-2); }
.u-p-3 { padding: var(--sp-3); }
.u-p-4 { padding: var(--sp-4); }

/* Text utilities */
.u-text-muted { color: var(--c-text-2); }
.u-text-right { text-align: right; }
.u-text-center { text-align: center; }
.u-text-bold { font-weight: var(--fw-bold); }
.u-text-semibold { font-weight: var(--fw-semibold); }
.u-text-sm { font-size: var(--fs-sm); }
.u-text-xs { font-size: var(--fs-xs); }
.u-text-danger { color: var(--c-danger); }
.u-text-success { color: var(--c-success); }
.u-text-warning { color: var(--c-warning); }

.u-font-mono { font-family: var(--font-mono); }
.u-nowrap { white-space: nowrap; }

/* Display helpers */
.u-hidden { display: none !important; }
.u-block { display: block; }