@import url('https://fonts.googleapis.com/css2?family=Public+Sans:wght@400;500;600&display=swap');

/* ─ Design Tokens ─ */
:root {
  --color-primary: #0B289D;
  --color-primary-dark: #0a2285;
  --color-black: #000000;
  --color-white: #ffffff;
  --color-text-secondary: rgba(0, 0, 0, 0.70);
  --color-border-light: rgba(0, 0, 0, 0.15);
  --color-surface-muted: rgba(0, 0, 0, 0.06);
  --color-surface-hover: rgba(0, 0, 0, 0.10);

  --font-family: 'Public Sans', sans-serif;
  --radius-sm: 4px;

  --touch-min: 44px;
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  color: var(--color-black);
  background: var(--color-white);
  line-height: 1.3;
  width: 100%;
}

img {
  display: block;
  max-width: 100%;
}

/* ─ Layout Containers ─ */
.page-content,
#main-content {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
}

#main-content {
  padding: 0 16px;
}

/* ─ Navigations ─ */
.site-nav,
.page-nav {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 60px;
  padding: 12px 16px;
}

.site-nav {
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border-light);
  gap: 16px;
}

/* ─ Branding ─ */
.site-logo {
  display: flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
}

.logo-icon {
  width: auto;
  height: 28px;
  flex-shrink: 0;
}

.logo-wordmark {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

/* ─ Focus Indicators ─ */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ─ Skip Navigation ─ */
.skip-nav {
  position: absolute;
  top: -9999px;
  left: 0;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.skip-nav:focus {
  top: 0;
}

.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;
}

/* ─ Back Nav wrapper ─ */
.back-nav {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 24px 0 24px;
}

/* ─ Breadcrumb Nav ─ */
.breadcrumb-nav {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 24px 0;
}

.breadcrumb {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 0;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  font-size: 16px;
  line-height: 1.5;
}

.breadcrumb-sep {
  margin: 0 6px;
  color: #000;
  font-size: 16px;
  line-height: 1.5;
}

.breadcrumb-link {
  color: #000;
  text-decoration: underline;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.breadcrumb-link:hover {
  text-decoration: none;
}

.breadcrumb-link:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.breadcrumb-current {
  color: #000;
  font-size: 16px;
  line-height: 1.5;
}

/* ─ Back / Navigation Button ─ */
.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-black);
  cursor: pointer;
  min-height: var(--touch-min);
  text-decoration: none;
  line-height: 1.5;
}

.btn-nav .material-icons-round {
  font-size: 24px;
  flex-shrink: 0;
}

/* ─ Shared Button Base ─ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 2px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.25;
  cursor: pointer;
  min-width: var(--touch-min);
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.15s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-surface-muted);
  color: #27272a;
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
}

.btn .material-icons-round {
  font-size: 20px;
  flex-shrink: 0;
}