/* MHCP USA Base Styles: accessible, responsive, fast */
:root{
  --bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --accent: #0ea5e9;
  --accent-strong: #0284c7;
  --surface: #f8fafc;
  --ring: #93c5fd;
  --success:#16a34a;
  --warning:#f59e0b;
  --danger:#dc2626;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b1220;
    --text:#e5e7eb;
    --muted:#9ca3af;
    --accent:#38bdf8;
    --accent-strong:#0ea5e9;
    --surface:#0f172a;
    --ring:#60a5fa;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  text-rendering:optimizeLegibility;
  font-size:16px;
}
@media (min-width: 768px){
  body{font-size:18px}
}
a{
  color:var(--accent);
  text-decoration:none;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}
a:hover{color:var(--accent-strong); text-decoration:underline}
.container{max-width:1200px;margin:0 auto;padding:0 1.25rem}
@media (min-width: 768px){
  .container{padding:0 2rem}
}
header{
  position:sticky; top:0; z-index:50; background:var(--bg);
  border-bottom:1px solid rgba(0,0,0,.06);
  box-shadow: var(--shadow);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:.75rem 0}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:700}
.brand .logo{width:36px;height:36px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent-strong));display:inline-block}
nav ul{display:flex;gap:1rem;list-style:none;padding:0;margin:0}
nav a{
  padding:.5rem .75rem;
  border-radius:8px;
  transition: background-color 0.2s ease, color 0.2s ease;
}
nav a:hover{
  background:rgba(14,165,233,.08);
  text-decoration:none;
}
nav a[aria-current="page"]{background:var(--surface)}
.btn{
  display:inline-block; font-weight:600; padding:0.875rem 1.5rem; border-radius:10px;
  background:var(--accent); color:white; border:none; cursor:pointer; box-shadow:var(--shadow);
  font-size:1rem; transition: all 0.2s ease;
}
.btn:hover{
  background:var(--accent-strong);
  color: white;
  text-decoration:none;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(14,165,233,.3);
}
.btn:active{
  transform: scale(0.98);
  transition-duration: 0.1s;
}
.btn-ghost{
  background:transparent;border:2px solid rgba(0,0,0,.15);color:var(--text);
  transition: all 0.2s ease;
}
.btn-ghost:hover{
  background:var(--surface);border-color:var(--accent);transform:none;
  box-shadow:none;
}
.btn-ghost:active{
  transform: scale(0.98);
  transition-duration: 0.1s;
}
.btn-block{display:block;width:100%}
[data-nav-toggle]{display:none}
.hero{
  background:linear-gradient(180deg, var(--surface), transparent);
  padding:3rem 0 3rem;
}
.hero h1{font-size:clamp(2rem,4vw,3.5rem);line-height:1.15;margin:.5rem 0 1rem;font-weight:800}
.hero p{color:var(--muted);font-size:1.15rem;line-height:1.7;max-width:800px}
.grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.card{
  background:var(--surface);
  padding:1.5rem;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  border:1px solid rgba(0,0,0,.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover{
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 4px 6px rgba(0,0,0,.08), 0 8px 16px rgba(0,0,0,.06);
}
footer{margin-top:4rem;padding:2.5rem 0;background:var(--surface);border-top:1px solid rgba(0,0,0,.08)}
h2{font-size:clamp(1.75rem,3vw,2.5rem); margin-top:3rem; margin-bottom:1.5rem; font-weight:700}
h3{font-size:1.25rem; margin-top:1rem; margin-bottom:0.75rem; font-weight:600}
.kicker{letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--muted);font-size:.8rem}
.pros-cons{display:grid;grid-template-columns: 1fr 1fr; gap:1rem}
ul.check{list-style:none;padding:0}
ul.check li{margin:.35rem 0;padding-left:1.5rem;position:relative}
ul.check li::before{content:"✓";position:absolute;left:0;color:var(--success);font-weight:700}
.notice{border-left:4px solid var(--accent);padding:.75rem 1rem;background:rgba(14,165,233,.08);border-radius:10px}
.warning{border-left:4px solid var(--warning);background:rgba(245,158,11,.08)}
small.help{color:var(--muted)}
.skip{position:absolute;left:-1000px;top:-1000px}
.skip:focus{left:1rem;top:1rem;background:var(--surface);padding:.5rem;border-radius:8px}
.input, input, select, textarea{
  width:100%; padding:.875rem 1rem; border:1px solid rgba(0,0,0,.15); border-radius:10px;
  background:var(--bg); color:var(--text); font-size:1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.input:focus, input:focus, select:focus, textarea:focus{
  outline:none; border-color:var(--accent);
  box-shadow: 0 0 0 3px rgba(14,165,233,.1);
}
label{font-weight:600;display:block;margin:.75rem 0 .5rem; font-size:0.95rem}
.form-row{display:grid;grid-template-columns:1fr 1fr; gap:.75rem}
.form-row > *{min-width:0}
.table{width:100%; border-collapse: collapse; background:var(--surface); border-radius:10px; overflow:hidden}
.table th, .table td{padding:.75rem 1rem;border-bottom:1px solid rgba(0,0,0,.08); text-align:left; vertical-align:top}
.badge{display:inline-block;padding:.25rem .5rem;border-radius:999px;background:rgba(99,102,241,.15)}
.toc{position:sticky; top:5rem}
kbd{font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; background:var(--surface); padding:.15rem .35rem; border-radius:6px; border:1px solid rgba(0,0,0,.12)}
blockquote{border-left:4px solid rgba(0,0,0,.12); margin:1rem 0; padding:.5rem 1rem; color:var(--muted)}
section{margin-bottom:3rem}
section:last-of-type{margin-bottom:0}
@media (max-width: 768px){
  .pros-cons{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .grid{grid-template-columns: 1fr; gap:1.25rem}
  h2{margin-top:2rem}
  .hero{padding:2rem 0}
  .hero h1{font-size:clamp(1.75rem,5vw,2.5rem)}
}
@media (max-width: 900px){
  [data-nav-toggle]{display:inline-block}
  nav[data-nav-menu]{
    position:absolute; top:100%; left:0; right:0;
    background:var(--bg); border-top:1px solid rgba(0,0,0,.08);
    box-shadow:var(--shadow); padding:1rem;
    display:none; flex-direction:column;
    max-height:0;
    opacity:0;
    overflow:hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
  }
  nav[data-nav-menu][data-open="true"]{
    display:flex;
    max-height:1000px;
    opacity:1;
  }
  nav[data-nav-menu] ul{flex-direction:column; gap:.75rem}
  nav[data-nav-menu] a.btn{display:block; text-align:center; margin-top:.75rem}
}

/* Hero entrance animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  animation: fadeUp 0.6s ease-out forwards;
}

.hero > p {
  animation: fadeUp 0.6s ease-out 0.1s forwards;
  opacity: 0;
}

.hero .btn {
  animation: fadeUp 0.6s ease-out 0.2s forwards;
  opacity: 0;
}

/* Ensure form buttons in hero are always visible */
.hero form .btn {
  opacity: 1 !important;
  animation: none !important;
}

/* Logo hover interaction */
.brand .logo {
  transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.brand:hover .logo {
  transform: scale(1.05) rotate(5deg);
}

/* Moving Kit card emoji animations */
.card h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card:hover h3::first-letter {
  display: inline-block;
  animation: bounce 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

/* Primary CTA pulse glow (subtle) */
@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 4px 8px rgba(14,165,233,.2);
  }
  50% {
    box-shadow: 0 4px 12px rgba(14,165,233,.4), 0 0 0 3px rgba(14,165,233,.1);
  }
}

.hero .btn:not(.btn-ghost),
[href*="newsletter"] .btn:not(.btn-ghost) {
  animation: pulseGlow 3s ease-in-out infinite;
}

/* Download button icon animation */
a[href$=".pdf"] .btn::after,
a[download] .btn::after {
  content: " ↓";
  display: inline-block;
  transition: transform 0.3s ease;
}

a[href$=".pdf"] .btn:hover::after,
a[download] .btn:hover::after {
  transform: translateY(2px);
}

/* Reduced motion support */
@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;
  }

  .hero h1, .hero > p, .hero .btn {
    opacity: 1 !important;
    animation: none !important;
  }
}

/* Breadcrumbs */
.breadcrumbs {
  margin: 1rem 0;
  padding: 0;
}

.breadcrumbs ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs li:not(:last-child)::after {
  content: "›";
  color: var(--muted);
  font-size: 1.2em;
}

.breadcrumbs a {
  color: var(--muted);
  transition: color 0.2s ease;
}

.breadcrumbs a:hover {
  color: var(--accent);
  text-decoration: none;
}

.breadcrumbs li[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}