:root{
  --bg: #f7fafc;
  --card: #ffffff;
  --text: #0f1724;
  --accent: #2563eb;
  --muted: #475569;
  --ring: #bfdbfe;
}

/* Dark theme variables */
:root.dark{
  --bg: #36393e; /* user requested */
  --card: #2f3235; /* slightly darker than bg for separation */
  --accent: #8ab4f8; /* lighter blue accent for links */
  --muted: #d0d4d7; /* readable muted text */
  --text: #dbe2e6;
  --ring: rgba(138,180,248,0.16);
}

/* Smooth transition when toggling dark/light theme */
html, body, .card, .notice, .contact-block, .fixed-repo-link, .theme-controls, .theme-btn, a, .logo {
  transition: color 200ms ease, background-color 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
  -webkit-transition: color 200ms ease, background-color 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
  background: linear-gradient(180deg, #eef2ff 0%, #f8fafc 100%);
  color: var(--text);
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 24px;
}
.container{max-width:720px;width:100%}
.card{
  background: var(--card);
  border: 1px solid rgba(15, 23, 36, 0.06);
  padding: 32px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(2,6,23,0.06);
  transform: translateY(8px);
  opacity: 0;
  animation: card-enter 520ms cubic-bezier(.22,.9,.31,1) forwards 120ms;
}
.card-header h1{margin:0;font-size:26px;color:var(--accent)}
.subtitle{margin:8px 0 0;color:var(--muted);font-weight:600}
.brand{display:flex;align-items:center;gap:12px}
.logo{border-radius:8px;box-shadow:0 6px 18px rgba(2,6,23,0.06)}
.card-header{position:relative}
.header-actions{position:absolute;right:16px;top:16px}
.repo-top-link{display:inline-flex;align-items:center;gap:8px;color:var(--muted);text-decoration:none;font-weight:700}
.repo-top-link .github-icon{width:20px;height:20px}

@media (max-width:520px){
  .header-actions{position:static;margin-top:8px}
  .card-header{padding-bottom:8px}
  .brand{flex-direction:row;align-items:center}
}

/* Fixed browser-corner repo link */
.fixed-repo-link{
  position:fixed !important; right:18px !important; left:auto !important; top:18px !important; z-index:9999 !important;
  display:inline-flex;align-items:center;gap:8px;padding:8px 12px;background:rgba(255,255,255,0.96);border-radius:999px;box-shadow:0 6px 18px rgba(2,6,23,0.08);color:var(--muted);text-decoration:none;font-weight:700}
.fixed-repo-link .github-icon{width:18px;height:18px}
.fixed-repo-link .repo-name{display:inline-block}

.fixed-repo-link:hover{transform:translateY(-3px) scale(1.02);transition:transform 180ms ease}
.logo{animation: logo-float 6s ease-in-out infinite}

@keyframes card-enter{
  from{opacity:0;transform:translateY(8px) scale(0.998)}
  to{opacity:1;transform:translateY(0) scale(1)}
}

@keyframes logo-float{
  0%{transform:translateY(0)}
  50%{transform:translateY(-6px)}
  100%{transform:translateY(0)}
}

@media (prefers-reduced-motion: reduce){
  .card{animation:none;transform:none;opacity:1}
  .logo{animation:none}
  .fixed-repo-link:hover{transition:none;transform:none}
}

@media (max-width:520px){
  .fixed-repo-link{padding:8px;border-radius:10px}
  .fixed-repo-link .repo-name{display:none}
}

/* left variant */
.fixed-repo-link.fixed-left{left:18px !important; right:auto !important}

/* Theme controls (top-right buttons) */
.theme-controls{position:fixed;right:18px;top:18px;display:flex;gap:8px;z-index:10001}
.theme-btn{border:0;background:rgba(255,255,255,0.96);padding:8px;border-radius:10px;cursor:pointer;box-shadow:0 6px 18px rgba(2,6,23,0.06);color:var(--muted)}
.theme-btn[aria-pressed="true"]{background:var(--card);font-weight:700}
.theme-btn .icon{display:block}

@media (max-width:520px){
  .theme-controls{right:12px;top:12px}
  .fixed-repo-link{left:12px}
}
.content{margin-top:18px}
.notice{background: linear-gradient(90deg, rgba(37,99,235,0.06), rgba(37,99,235,0.03));
  border:1px solid rgba(37,99,235,0.08);
  padding:12px;border-radius:8px;color:var(--text)}
.contact-block{margin-top:14px;padding:12px;border-radius:8px;background:#f1f5f9;border:1px solid rgba(2,6,23,0.04)}
.contact a{color:var(--accent);font-weight:700;text-decoration:none}
.thanks{margin-top:14px;color:var(--muted);font-weight:600}

/* Theme toggle button */
.theme-toggle{display:none !important}

/* Dark mode page adjustments */
body.dark, :root.dark body{
  background: var(--bg);
}
.dark .card{box-shadow:0 10px 30px rgba(2,6,23,0.45)}
.dark .card{border:1px solid rgba(255,255,255,0.03)}
.dark .notice{background: linear-gradient(90deg, rgba(138,180,248,0.06), rgba(138,180,248,0.03));}
.dark .contact-block{background:#2a2c2f;border:1px solid rgba(255,255,255,0.02)}
.dark .subtitle,.dark .thanks,.dark .contact-block strong{color:var(--muted)}
.dark a{color:var(--accent)}

.repo-link{margin-top:12px}
.repo-link a{display:inline-flex;align-items:center;gap:8px;color:var(--muted);text-decoration:none;font-weight:600}
.github-icon{width:20px;height:20px;filter:invert(0);opacity:0.9}

@media (max-width:520px){
  .card{padding:18px}
  .card-header h1{font-size:20px}
}

/* noop: trigger deploy 2025-10-04_17.33.22 */

/* noop: trigger deploy 2025-10-04_17.33.37 */