/* OzBrief production styles — replaces Tailwind CDN */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}
img, video { max-width: 100%; height: auto; display: block; }
svg { display: block; flex-shrink: 0; max-width: none; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button, input { font: inherit; }

:root {
  --oz-bg: #121a24;
  --oz-card: #1a2532;
  --oz-accent: #38BDF8;
}

.bg-ozbrief-bg { background: var(--oz-bg); }
.bg-ozbrief-card { background: var(--oz-card); }
.bg-ozbrief-card\/80 { background: rgba(26, 37, 50, 0.8); }
.text-ozbrief-accent { color: var(--oz-accent); }
.bg-ozbrief-accent { background: var(--oz-accent); }
.text-ozbrief-bg { color: var(--oz-bg); }
.text-white { color: #fff; }
.text-gray-100 { color: #f3f4f6; }
.text-gray-200 { color: #e5e7eb; }
.text-gray-300 { color: #d1d5db; }
.text-gray-400 { color: #9ca3af; }
.text-gray-500 { color: #6b7280; }
.border-white\/10 { border-color: rgba(255,255,255,0.1); }
.border-white\/15 { border-color: rgba(255,255,255,0.15); }
.border-white\/20 { border-color: rgba(255,255,255,0.2); }
.border-ozbrief-accent { border-color: var(--oz-accent); }
.border-ozbrief-accent\/50 { border-color: rgba(56,189,248,0.5); }
.hover\:text-white:hover { color: #fff; }
.hover\:text-gray-300:hover { color: #d1d5db; }
.hover\:underline:hover { text-decoration: underline; }
.hover\:opacity-90:hover { opacity: 0.9; }
.hover\:bg-white\/5:hover { background: rgba(255,255,255,0.05); }
.hover\:border-ozbrief-accent\/50:hover { border-color: rgba(56,189,248,0.5); }

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-1 { flex: 1 1 0%; }
.shrink-0 { flex-shrink: 0; }
.shrink { flex-shrink: 1; }
.items-center { align-items: center; }
.items-stretch { align-items: stretch; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.space-y-1 > * + * { margin-top: 0.25rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-4 > * + * { margin-top: 1rem; }

.min-h-screen { min-height: 100vh; }
.w-full { width: 100%; }
.w-auto { width: auto; }
.h-8 { height: 2rem; }
.h-9 { height: 2.25rem; }
.h-10 { height: 2.5rem; }
.h-11 { height: 2.75rem; }
.h-14 { height: 3.5rem; }
.h-16 { height: 4rem; }
.h-auto { height: auto; }
.h-full { height: 100%; }
.w-2\.5 { width: 0.625rem; }
.h-2\.5 { height: 0.625rem; }
.w-3 { width: 0.75rem; }
.w-3\.5 { width: 0.875rem; }
.h-3\.5 { height: 0.875rem; }
.w-4 { width: 1rem; }
.h-4 { height: 1rem; }
.w-5 { width: 1.25rem; }
.h-5 { height: 1.25rem; }
.w-6 { width: 1.5rem; }
.h-6 { height: 1.5rem; }
.w-12 { width: 3rem; }
.h-12 { height: 3rem; }
.w-44 { width: 11rem; }
.w-52 { width: 13rem; }
.w-56 { width: 14rem; }
.min-w-0 { min-width: 0; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-5xl { max-width: 64rem; }
.max-w-6xl { max-width: 72rem; }
.max-w-sm { max-width: 24rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mt-10 { margin-top: 2.5rem; }
.mt-auto { margin-top: auto; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-1\.5 { padding-top: 0.375rem; padding-bottom: 0.375rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.pb-4 { padding-bottom: 1rem; }
.pb-24 { padding-bottom: 6rem; }
.pt-1 { padding-top: 0.25rem; }
.pl-3 { padding-left: 0.75rem; }
.pl-5 { padding-left: 1.25rem; }

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-base { font-size: 1rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.uppercase { text-transform: uppercase; }
.tracking-wide { letter-spacing: 0.025em; }
.leading-relaxed { line-height: 1.625; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.whitespace-nowrap { white-space: nowrap; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.break-all { word-break: break-all; }
.list-disc { list-style-type: disc; }

.border-2 { border-width: 2px; }
.border-white\/20 { border-color: rgba(255,255,255,0.2); }
.ring-1 { box-shadow: 0 0 0 1px rgba(255,255,255,0.1); }
.ring-white\/10 { box-shadow: 0 0 0 1px rgba(255,255,255,0.1); }
.bg-ozbrief-accent\/20 { background: rgba(56, 189, 248, 0.2); }
.bg-slate-600\/50 { background: rgba(71, 85, 105, 0.5); }
.bg-emerald-500 { background: #10b981; }
.bg-slate-400 { background: #94a3b8; }
.bg-rose-500 { background: #f43f5e; }
.object-contain { object-fit: contain; }
.transition-transform { transition: transform 0.15s ease; }
.aspect-\[473\/1024\] { aspect-ratio: 473 / 1024; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.z-\[200\] { z-index: 200; }
.border { border-width: 1px; border-style: solid; }
.border-b { border-bottom-width: 1px; border-bottom-style: solid; }
.border-t { border-top-width: 1px; border-top-style: solid; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-3xl { border-radius: 1.5rem; }
.rounded-full { border-radius: 9999px; }
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.3); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); }
.overflow-hidden { overflow: hidden; }
.overflow-x-auto { overflow-x: auto; }
.backdrop-blur { backdrop-filter: blur(8px); }
.transition { transition: color 0.15s, background 0.15s, border 0.15s, opacity 0.15s; }
.cursor-pointer { cursor: pointer; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.inset-0 { inset: 0; }
.top-full { top: 100%; }
.right-0 { right: 0; }
.object-cover { object-fit: cover; }
.opacity-60 { opacity: 0.6; }
.block { display: block; }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

header { border-bottom: 1px solid rgba(255,255,255,0.1); }
nav ul { list-style: none; margin: 0; padding: 0; }
.prose p { margin-bottom: 1rem; }
code { font-family: ui-monospace, monospace; font-size: 0.875em; }

@media (min-width: 640px) {
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sm\:w-52 { width: 13rem; }
}
@media (min-width: 768px) {
  .md\:flex { display: flex; }
  .md\:hidden { display: none; }
  .md\:h-9 { height: 2.25rem; }
  .md\:h-12 { height: 3rem; }
  .md\:h-16 { height: 4rem; }
  .md\:py-12 { padding-top: 3rem; padding-bottom: 3rem; }
  .md\:py-16 { padding-top: 4rem; padding-bottom: 4rem; }
  .md\:py-24 { padding-top: 6rem; padding-bottom: 6rem; }
  .md\:text-2xl { font-size: 1.5rem; }
  .md\:text-3xl { font-size: 1.875rem; }
  .md\:text-4xl { font-size: 2.25rem; }
  .md\:text-xl { font-size: 1.25rem; }
  .md\:gap-4 { gap: 1rem; }
  .md\:gap-6 { gap: 1.5rem; }
  .md\:w-auto { width: auto; }
  .md\:w-56 { width: 14rem; }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .md\:flex-row { flex-direction: row; }
  .md\:p-5 { padding: 1.25rem; }
}
@media (min-width: 1024px) {
  .lg\:gap-4 { gap: 1rem; }
  .lg\:px-4 { padding-left: 1rem; padding-right: 1rem; }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 767px) {
  .max-md\:absolute { position: absolute; }
  .max-md\:top-full { top: 100%; }
  .max-md\:left-0 { left: 0; }
  .max-md\:right-0 { right: 0; }
  .max-md\:bg-ozbrief-card { background: var(--oz-card); }
  .max-md\:border-b { border-bottom-width: 1px; border-bottom-style: solid; }
  .max-md\:border-white\/10 { border-color: rgba(255,255,255,0.1); }
  .max-md\:py-4 { padding-top: 1rem; padding-bottom: 1rem; }
  .max-md\:px-4 { padding-left: 1rem; padding-right: 1rem; }
  .max-md\:flex-col { flex-direction: column; }
  .max-md\:items-stretch { align-items: stretch; }
  .max-md\:shadow-lg { box-shadow: 0 10px 15px -3px rgba(0,0,0,0.3); }
  .max-md\:flex-wrap { flex-wrap: wrap; }
  .max-md\:text-base { font-size: 1rem; }
  .max-md\:pt-1 { padding-top: 0.25rem; }
  .max-md\:w-full { width: 100%; }
}

#oz-store-chooser.flex { display: flex; }
#nav-menu summary { list-style: none; }
#nav-menu summary::-webkit-details-marker { display: none; }
#nav-about-menu[open] .nav-about-chevron { transform: rotate(180deg); }
@media (min-width: 768px) {
  #nav-about-panel {
    position: absolute; top: 100%; right: 0; margin-top: 0.25rem;
    min-width: 11rem; padding: 0.35rem 0; border-radius: 0.75rem;
    border: 1px solid rgba(255,255,255,0.1); background: var(--oz-card);
    box-shadow: 0 12px 32px rgba(0,0,0,0.35); z-index: 50;
  }
}
@media (max-width: 767px) {
  #nav-menu:not(.hidden) {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--oz-card); border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 1rem; flex-direction: column; align-items: stretch;
    box-shadow: 0 10px 15px rgba(0,0,0,0.3);
  }
}

.max-w-none { max-width: none; }
.max-w-xl { max-width: 36rem; }
.rounded-\[2px\] { border-radius: 2px; }
.hover\:bg-white\/10:hover { background: rgba(255,255,255,0.1); }