/* about.php — static CSS (no Tailwind CDN) */
*,:after,:before{box-sizing:border-box;border:0 solid #e5e7eb}
html{line-height:1.5;-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,system-ui,sans-serif;background:#f9fafb;color:#1f2937}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:inherit}
blockquote,h1,h2,h3,p{margin:0}
article{display:block}

:root{
  --primary:#1a5276;
  --secondary:#3498db;
  --accent:#f39c12;
}

.content-auto{content-visibility:auto}
.text-shadow{text-shadow:0 2px 4px rgba(0,0,0,.1)}
.bg-gradient-hero{background:linear-gradient(135deg,#1a5276 0%,#3498db 100%)}
.admin-card-hover{transition:all .3s ease}
.admin-card-hover:hover{
  transform:translateY(-8px);
  box-shadow:0 12px 20px -10px rgba(26,82,118,.25)
}

.container{width:100%;margin-left:auto;margin-right:auto}
@media(min-width:640px){.container{max-width:640px}}
@media(min-width:768px){.container{max-width:768px}}
@media(min-width:1024px){.container{max-width:1024px}}
@media(min-width:1280px){.container{max-width:1280px}}

.absolute{position:absolute}
.relative{position:relative}
.inset-0{inset:0}
.top-0{top:0}
.bottom-0{bottom:0}
.left-4{left:1rem}
.-bottom-1{bottom:-.25rem}
.-right-1{right:-.25rem}
.z-10{z-index:10}
.block{display:block}
.inline-block{display:inline-block}
.flex{display:flex}
.inline-flex{display:inline-flex}
.grid{display:grid}
.hidden{display:none}
.flex-col{flex-direction:column}
.flex-wrap{flex-wrap:wrap}
.items-start{align-items:flex-start}
.items-center{align-items:center}
.justify-center{justify-content:center}
.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}
.gap-3{gap:.75rem}
.gap-4{gap:1rem}
.gap-8{gap:2rem}
.space-y-5>:not([hidden])~:not([hidden]){margin-top:1.25rem}
.h-full{height:100%}
.h-1\.5{height:.375rem}
.h-8{height:2rem}
.h-16{height:4rem}
.h-28{height:7rem}
.w-full{width:100%}
.w-0\.5{width:.125rem}
.w-8{width:2rem}
.w-16{width:4rem}
.w-28{width:7rem}
.max-w-2xl{max-width:42rem}
.max-w-3xl{max-width:48rem}
.max-w-4xl{max-width:56rem}
.mx-auto{margin-left:auto;margin-right:auto}
.my-2{margin-top:.5rem;margin-bottom:.5rem}
.mt-1{margin-top:.25rem}
.mt-4{margin-top:1rem}
.mr-1{margin-right:.25rem}
.mr-2{margin-right:.5rem}
.mb-2{margin-bottom:.5rem}
.mb-3{margin-bottom:.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}
.p-6{padding:1.5rem}
.p-8{padding:2rem}
.p-10{padding:2.5rem}
.px-2{padding-left:.5rem;padding-right:.5rem}
.px-3{padding-left:.75rem;padding-right:.75rem}
.px-4{padding-left:1rem;padding-right:1rem}
.px-6{padding-left:1.5rem;padding-right:1.5rem}
.py-1{padding-top:.25rem;padding-bottom:.25rem}
.py-1\.5{padding-top:.375rem;padding-bottom:.375rem}
.py-2{padding-top:.5rem;padding-bottom:.5rem}
.py-3{padding-top:.75rem;padding-bottom:.75rem}
.py-16{padding-top:4rem;padding-bottom:4rem}
.pl-5{padding-left:1.25rem}
.pt-6{padding-top:1.5rem}
.text-left{text-align:left}
.text-center{text-align:center}
.text-right{text-align:right}
.text-xs{font-size:.75rem;line-height:1rem}
.text-sm{font-size:.875rem;line-height:1.25rem}
.text-\[15px\]{font-size:15px}
.text-lg{font-size:1.125rem;line-height:1.75rem}
.text-xl{font-size:1.25rem;line-height:1.75rem}
.text-2xl{font-size:1.5rem;line-height:2rem}
.text-3xl{font-size:1.875rem;line-height:2.25rem}
.text-5xl{font-size:3rem;line-height:1}
.font-sans{font-family:Inter,system-ui,sans-serif}
.font-display{font-family:Poppins,sans-serif}
.font-medium{font-weight:500}
.font-semibold{font-weight:600}
.font-bold{font-weight:700}
.leading-tight{line-height:1.25}
.leading-snug{line-height:1.375}
.leading-relaxed{line-height:1.625}
.overflow-hidden{overflow:hidden}
.overflow-x-hidden{overflow-x:hidden}
.rounded-md{border-radius:.375rem}
.rounded-lg{border-radius:.5rem}
.rounded-xl{border-radius:.75rem}
.rounded-2xl{border-radius:1rem}
.rounded-full{border-radius:9999px}
.rounded-r-lg{border-top-right-radius:.5rem;border-bottom-right-radius:.5rem}
.border{border-width:1px}
.border-4{border-width:4px}
.border-t{border-top-width:1px}
.border-l-4{border-left-width:4px}
.border-white{border-color:#fff}
.border-white\/40{border-color:rgba(255,255,255,.4)}
.border-slate-200{border-color:#e2e8f0}
.border-slate-200\/80{border-color:rgba(226,232,240,.8)}
.border-secondary{border-color:var(--secondary)}
.border-primary\/10{border-color:rgba(26,82,118,.1)}
.border-red-200{border-color:#fecaca}
.shadow-sm{box-shadow:0 1px 2px 0 rgba(0,0,0,.05)}
.shadow-md{box-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -2px rgba(0,0,0,.1)}
.object-cover{object-fit:cover}
.transform{transform:translateZ(0)}
.opacity-0{opacity:0}
.opacity-100{opacity:1}
.translate-y-0{transform:translateY(0)}
.translate-y-10{transform:translateY(2.5rem)}
.transition-all{transition:all .15s cubic-bezier(.4,0,.2,1)}
.transition-colors{transition:color .15s,background-color .15s,border-color .15s}
.duration-700{transition-duration:700ms}
.backdrop-blur-sm{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}

.text-white{color:#fff}
.text-white\/90{color:rgba(255,255,255,.9)}
.text-primary{color:var(--primary)}
.text-primary\/70{color:rgba(26,82,118,.7)}
.text-secondary{color:var(--secondary)}
.text-accent{color:var(--accent)}
.text-gray-500{color:#6b7280}
.text-gray-600{color:#4b5563}
.text-gray-700{color:#374151}
.text-gray-800{color:#1f2937}
.text-gray-900{color:#111827}
.text-red-600{color:#dc2626}
.text-red-700{color:#b91c1c}
.text-green-600{color:#16a34a}

.bg-white{background-color:#fff}
.bg-white\/20{background-color:rgba(255,255,255,.2)}
.bg-white\/90{background-color:rgba(255,255,255,.9)}
.bg-gray-50{background-color:#f9fafb}
.bg-gray-100{background-color:#f3f4f6}
.bg-blue-100{background-color:#dbeafe}
.bg-red-50{background-color:#fef2f2}
.bg-red-100{background-color:#fee2e2}
.bg-green-100{background-color:#dcfce7}
.bg-primary{background-color:var(--primary)}
.bg-accent{background-color:var(--accent)}
.bg-primary\/5{background-color:rgba(26,82,118,.05)}
.bg-primary\/10{background-color:rgba(26,82,118,.1)}
.bg-primary\/20{background-color:rgba(26,82,118,.2)}
.bg-secondary\/10{background-color:rgba(52,152,219,.1)}
.bg-sky-50\/60{background-color:rgba(240,249,255,.6)}
.bg-gradient-to-b{background-image:linear-gradient(to bottom,var(--tw-gradient-stops))}
.from-sky-50{--tw-gradient-from:#f0f9ff;--tw-gradient-stops:var(--tw-gradient-from),var(--tw-gradient-to,rgba(240,249,255,0))}
.to-white{--tw-gradient-to:#fff}
.bg-gradient-to-r{background-image:linear-gradient(to right,var(--tw-gradient-stops))}
.from-primary{--tw-gradient-from:var(--primary);--tw-gradient-stops:var(--tw-gradient-from),var(--tw-gradient-to,rgba(26,82,118,0))}
.via-secondary{--tw-gradient-to:rgba(52,152,219,0);--tw-gradient-stops:var(--tw-gradient-from),var(--secondary),var(--tw-gradient-to)}
.to-accent{--tw-gradient-to:var(--accent)}

.hover\:bg-gray-100:hover{background-color:#f3f4f6}
.hover\:bg-accent\/90:hover{background-color:rgba(243,156,18,.9)}
.hover\:text-primary:hover{color:var(--primary)}
.hover\:shadow-md:hover{box-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -2px rgba(0,0,0,.1)}
.hover\:scale-105:hover{transform:scale(1.05)}

@media(min-width:640px){
  .sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(min-width:768px){
  .md\:mb-0{margin-bottom:0}
  .md\:mr-4{margin-right:1rem}
  .md\:ml-4{margin-left:1rem}
  .md\:flex-1{flex:1 1 0%}
  .md\:flex-row{flex-direction:row}
  .md\:left-1\/2{left:50%}
  .md\:-translate-x-1\/2{transform:translateX(-50%)}
  .md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .md\:p-12{padding:3rem}
  .md\:py-20{padding-top:5rem;padding-bottom:5rem}
  .md\:py-24{padding-top:6rem;padding-bottom:6rem}
  .md\:text-base{font-size:1rem;line-height:1.5rem}
  .md\:text-xl{font-size:1.25rem;line-height:1.75rem}
  .md\:text-2xl{font-size:1.5rem;line-height:2rem}
  .md\:text-3xl{font-size:1.875rem;line-height:2.25rem}
  .md\:text-4xl{font-size:2.25rem;line-height:2.5rem}
  .md\:text-5xl{font-size:3rem;line-height:1}
  .md\:leading-loose{line-height:2}
}
@media(min-width:1024px){
  .lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(min-width:1280px){
  .xl\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
}

/* Changelog (GitHub commits) */
.changelog-timeline{list-style:none;margin:0;padding:0;position:relative}
.changelog-timeline:before{
  content:"";
  position:absolute;
  left:11px;
  top:.35rem;
  bottom:.35rem;
  width:2px;
  background:rgba(26,82,118,.18)
}
.changelog-item{position:relative;padding-left:2.25rem;margin-bottom:1.25rem}
.changelog-item:last-child{margin-bottom:0}
.changelog-dot{
  position:absolute;
  left:4px;
  top:1.15rem;
  width:16px;
  height:16px;
  border-radius:9999px;
  background:#fff;
  border:3px solid var(--secondary);
  box-shadow:0 0 0 3px rgba(52,152,219,.15)
}
.changelog-card{
  background:#fff;
  border:1px solid rgba(148,163,184,.35);
  border-radius:1rem;
  padding:1rem 1.15rem 1.1rem;
  box-shadow:0 1px 2px rgba(15,23,42,.04);
  transition:box-shadow .2s ease, transform .2s ease
}
.changelog-card:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 24px -16px rgba(26,82,118,.35)
}
.changelog-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.55rem .85rem;
  color:#64748b;
  font-size:.8125rem;
  margin-bottom:.45rem
}
.changelog-author i{margin-right:.25rem}
.changelog-sha{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  background:#f1f5f9;
  color:#334155;
  border-radius:.375rem;
  padding:.1rem .4rem
}
.changelog-title{
  font-size:1.05rem;
  line-height:1.45;
  font-weight:600;
  color:#1f2937;
  margin:0 0 .55rem
}
.changelog-link{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  font-size:.8125rem;
  color:var(--secondary);
  font-weight:500
}
.changelog-link:hover{color:var(--primary)}
.bg-amber-50{background:#fffbeb}
.border-amber-200{border-color:#fde68a}
.text-amber-700{color:#b45309}
.text-amber-800{color:#92400e}
.gap-3{gap:.75rem}
.mt-8{margin-top:2rem}
code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.85em;
  background:#f1f5f9;
  padding:.05rem .3rem;
  border-radius:.25rem
}