/* public/CSS/global.css */

/* Base styles, utilities, and small layout primitives shared by public and admin pages. */

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-100);
  line-height: 1.5;
  background-color: var(--color-bg);
  color: var(--color-text);
}

main {
  display: block;
}

a {
  color: var(--color-link);
  text-underline-offset: 0.16em;
  text-decoration-thickness: 0.08em;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-strong);
}

h1 {
  font-size: var(--font-size-600);
}

h2 {
  font-size: var(--font-size-500);
}

h3 {
  font-size: var(--font-size-400);
}

h4 {
  font-size: var(--font-size-300);
}

p,
ul,
ol {
  max-width: var(--size-reading);
}

small {
  font-size: var(--font-size-050);
  color: var(--color-text-muted);
}

code,
pre,
kbd,
samp {
  font-family: ui-monospace, SFMono-Regular, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

::selection {
  background: var(--color-brand-soft);
  color: var(--color-text-strong);
}

/* Global visible focus state */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
}

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  top: -10rem;
  left: var(--space-4);
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  color: var(--color-text-strong);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

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

/* Containers */
.container {
  width: min(100% - 2rem, var(--size-content));
  margin-inline: auto;
}

.container--wide {
  width: min(100% - 2rem, var(--size-wide));
  margin-inline: auto;
}

.container--reading {
  width: min(100% - 2rem, var(--size-reading));
  margin-inline: auto;
}

/* Flow / stack helpers */
.flow > * + * {
  margin-top: var(--flow-space, var(--space-4));
}

.stack > * + * {
  margin-top: var(--stack-space, var(--space-4));
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--cluster-gap, var(--space-3));
}

/* Grid helpers */
.grid {
  display: grid;
  gap: var(--grid-gap, var(--space-4));
}

.grid--2 {
  grid-template-columns: 1fr;
}

.grid--3 {
  grid-template-columns: 1fr;
}

.grid--auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(min(18rem, 100%), 1fr));
}

@media (min-width: 48rem) {
  .grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Reusable surfaces */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.card--padded {
  padding: var(--space-5);
}

.card--highlight {
  background-color: var(--color-surface-muted);
}

/* Text helpers */
.u-text-left {
  text-align: left;
}

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

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

.u-text-muted {
  color: var(--color-text-muted);
}

.u-text-subtle {
  color: var(--color-text-subtle);
}

.u-max-reading {
  max-width: var(--size-reading);
}

/* Display helpers */
.u-flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.u-hidden {
  display: none !important;
}

.u-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  white-space: nowrap;
  border: 0;
  clip-path: inset(50%);
}

/* Spacing helpers */
.u-mt-0 {
  margin-top: 0 !important;
}

.u-mt-2 {
  margin-top: var(--space-2) !important;
}

.u-mt-4 {
  margin-top: var(--space-4) !important;
}

.u-mt-6 {
  margin-top: var(--space-6) !important;
}

.u-mb-0 {
  margin-bottom: 0 !important;
}

.u-mb-2 {
  margin-bottom: var(--space-2) !important;
}

.u-mb-4 {
  margin-bottom: var(--space-4) !important;
}

.u-mb-6 {
  margin-bottom: var(--space-6) !important;
}

.u-p-4 {
  padding: var(--space-4) !important;
}

.u-p-6 {
  padding: var(--space-6) !important;
}

.u-gap-2 {
  gap: var(--space-2) !important;
}

.u-gap-4 {
  gap: var(--space-4) !important;
}