/* USWDS / USA.gov Official Design System Theme */
:root {
  --usa-dark-blue: #112e51;
  --usa-light-blue: #205493;
  --usa-red: #d9381e;
  --usa-red-dark: #b50900;
  --usa-bg: #f1f1f1;
  --usa-white: #ffffff;
  --usa-text: #212121;
  --usa-border: #aeb0b5;
  --usa-focus: #3e94cf;
  --usa-font: "Source Sans Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--usa-font);
  color: var(--usa-text);
  background-color: var(--usa-bg);
  line-height: 1.6;
}

/* OFFICIAL TOP BANNER */
.usa-banner {
  background-color: #f0f0f0;
  border-bottom: 1px solid #d6d7d9;
  padding: 0.35rem 2rem;
  font-size: 0.8rem;
  color: #323a45;
  display: flex;
  align-items: center;
  gap: 8px;
}

.usa-banner svg { width: 18px; height: 18px; }

/* HEADER & NAVBAR */
header.usa-header {
  background-color: var(--usa-white);
  border-bottom: 4px solid var(--usa-dark-blue);
}

.usa-header-nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.usa-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--usa-dark-blue);
}

.usa-logo svg { width: 42px; height: 42px; }

.usa-logo-title {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1;
}

.usa-logo-sub {
  font-size: 0.8rem;
  color: #5b616b;
  display: block;
  font-weight: 400;
}

.usa-search-box {
  display: flex;
  align-items: center;
  border: 2px solid var(--usa-dark-blue);
  border-radius: 4px;
  overflow: hidden;
  width: 100%;
  max-width: 380px;
}

.usa-search-box input {
  border: none;
  padding: 0.55rem 0.85rem;
  font-size: 0.95rem;
  width: 100%;
  outline: none;
}

.usa-search-box button {
  background-color: var(--usa-dark-blue);
  color: white;
  border: none;
  padding: 0.55rem 1rem;
  font-weight: 700;
  cursor: pointer;
}

.usa-nav-links {
  background-color: var(--usa-dark-blue);
  padding: 0 2rem;
}

.usa-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 2rem;
}

.usa-nav-inner a {
  color: var(--usa-white);
  text-decoration: none;
  padding: 0.85rem 0;
  font-size: 1rem;
  font-weight: 600;
  display: inline-block;
  border-bottom: 3px solid transparent;
}

.usa-nav-inner a:hover {
  border-bottom: 3px solid var(--usa-red);
}

/* HERO SECTION MATCHING USA.gov */
.usa-hero {
  background: linear-gradient(135deg, #112e51 0%, #205493 100%);
  color: white;
  padding: 3.5rem 2rem;
  text-align: center;
  border-bottom: 5px solid var(--usa-red);
}

.usa-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.usa-hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto 1.5rem auto;
  color: #e1f3f8;
}

.usa-hero-btn {
  display: inline-block;
  background-color: var(--usa-red);
  color: white;
  padding: 0.85rem 1.75rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 4px;
  font-size: 1.05rem;
  transition: background-color 0.2s;
}

.usa-hero-btn:hover {
  background-color: var(--usa-red-dark);
}

/* BREADCRUMB */
.usa-breadcrumb {
  max-width: 1200px;
  margin: 1.25rem auto 0 auto;
  padding: 0 2rem;
  font-size: 0.9rem;
  color: #5b616b;
}

.usa-breadcrumb a {
  color: var(--usa-light-blue);
  text-decoration: underline;
}

/* GRID & CARDS */
.usa-main-container {
  max-width: 1200px;
  margin: 2rem auto 4rem auto;
  padding: 0 2rem;
}

.usa-section-heading {
  font-size: 1.8rem;
  color: var(--usa-dark-blue);
  margin-bottom: 1.5rem;
  border-bottom: 3px solid var(--usa-dark-blue);
  padding-bottom: 0.5rem;
}

.usa-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.usa-card {
  background: var(--usa-white);
  border: 1px solid var(--usa-border);
  border-top: 4px solid var(--usa-light-blue);
  border-radius: 4px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.usa-card-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--usa-red);
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.usa-card h3 a {
  font-size: 1.25rem;
  color: var(--usa-dark-blue);
  text-decoration: underline;
  font-weight: 700;
  line-height: 1.35;
}

.usa-card h3 a:hover {
  color: var(--usa-light-blue);
}

.usa-card p {
  margin-top: 0.75rem;
  color: #323a45;
  font-size: 0.95rem;
  flex-grow: 1;
}

.usa-card-date {
  font-size: 0.85rem;
  color: #757575;
  margin-top: 1rem;
  border-top: 1px solid #e6e6e6;
  padding-top: 0.5rem;
}

/* POST DETAIL PAGE */
.usa-post-wrapper {
  max-width: 820px;
  margin: 2rem auto 4rem auto;
  background: var(--usa-white);
  padding: 2.5rem;
  border-radius: 4px;
  border: 1px solid var(--usa-border);
  border-top: 5px solid var(--usa-dark-blue);
}

.usa-post-wrapper h1 {
  font-size: 2.4rem;
  color: var(--usa-dark-blue);
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.usa-post-meta {
  font-size: 0.9rem;
  color: #5b616b;
  border-bottom: 2px solid var(--usa-bg);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.usa-post-content p {
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  color: #212121;
}

.usa-post-content h2 {
  font-size: 1.5rem;
  color: var(--usa-dark-blue);
  margin: 1.75rem 0 0.85rem 0;
}

.usa-post-content ul {
  margin-left: 1.75rem;
  margin-bottom: 1.5rem;
}

.usa-post-content li {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

/* FOOTER */
footer.usa-footer {
  background-color: var(--usa-dark-blue);
  color: white;
  padding: 3rem 2rem 2rem 2rem;
  border-top: 6px solid var(--usa-red);
}

.usa-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.usa-footer-inner a {
  color: #e1f3f8;
  text-decoration: underline;
}

@media (max-width: 900px) {
  .usa-card-grid { grid-template-columns: 1fr; }
  .usa-header-nav { flex-direction: column; gap: 1rem; }
  .usa-search-box { max-width: 100%; }
}