/* felixme.de — gemeinsames Stylesheet für alle Unterseiten (Blog, Impressum, …).
   Design-Tokens gespiegelt aus public_html/index.html — Änderungen dort nachziehen. */

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

:root {
  --bg:          #09090b;
  --surface:     rgba(255, 255, 255, 0.024);
  --surface-2:   rgba(255, 255, 255, 0.045);
  --border:      rgba(255, 255, 255, 0.08);
  --border-hi:   rgba(255, 255, 255, 0.16);
  --text:        #f4f4f5;
  --text-2:      #a1a1aa;
  --text-3:      #63636b;
  --accent:      #a5b4fc;
  --radius:      14px;
  --nav-h:       64px;
  --font: "Inter", "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Code", ui-monospace, "SF Mono", Consolas, monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

::selection { background: rgba(129, 140, 248, 0.35); color: #fff; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Hintergrund-Ebenen */
.bg-grid, .bg-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}
.bg-grid {
  background-image:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 20%, transparent 75%);
}
.bg-glow {
  background: radial-gradient(ellipse 55% 40% at 50% -8%, rgba(129, 140, 248, 0.13), transparent 65%);
  animation: glowPulse 9s ease-in-out infinite alternate;
}
@keyframes glowPulse {
  from { opacity: 0.75; }
  to   { opacity: 1; }
}
/* Raster leuchtet unter dem Mauszeiger auf (nur Desktop, per JS aktiviert) */
.bg-grid-hi {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image:
    radial-gradient(220px at var(--mx, 50%) var(--my, -20%), rgba(129, 140, 248, 0.07), transparent 70%),
    linear-gradient(rgba(165, 180, 252, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(165, 180, 252, 0.09) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
  mask-image: radial-gradient(260px at var(--mx, 50%) var(--my, -20%), #000 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(260px at var(--mx, 50%) var(--my, -20%), #000 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.5s ease;
}
body.pointer-active .bg-grid-hi { opacity: 1; }
@media (hover: none) {
  .bg-grid-hi { display: none; }
}

.container {
  width: min(760px, 100% - 3rem);
  margin-inline: auto;
}

/* Navigation */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  height: var(--nav-h);
  background: rgba(9, 9, 11, 0.72);
  backdrop-filter: blur(14px) saturate(1.5);
  -webkit-backdrop-filter: blur(14px) saturate(1.5);
  border-bottom: 1px solid var(--border);
}
.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  font-weight: 650;
  font-size: 1.02rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
}
.brand span { color: var(--text-3); font-weight: 450; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}
.nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-links a[aria-current="page"] { color: var(--text); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 550;
  color: var(--text-2);
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.42rem 1rem;
  border-radius: 999px;
  text-decoration: none;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--border-hi);
  background: var(--surface);
}
.nav-right { display: flex; align-items: center; gap: 0.6rem; }

/* Burger-Button + Mobil-Menü */
.menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.2s;
}
.menu-btn:hover { border-color: var(--border-hi); }
.menu-btn span {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 1px;
  background: var(--text);
  transition: transform 0.25s ease;
}
.menu-btn[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  z-index: 49;
  flex-direction: column;
  background: rgba(9, 9, 11, 0.92);
  backdrop-filter: blur(18px) saturate(1.5);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 1.5rem 1rem;
}
.mobile-menu a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  padding: 0.95rem 0.25rem;
  border-bottom: 1px solid var(--border);
}
.mobile-menu a:last-child { border-bottom: 0; }
.mobile-menu a:hover { color: var(--text); }
.mobile-menu.open { display: flex; animation: menuIn 0.25s ease both; }
@keyframes menuIn {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: none; }
}
@media (min-width: 721px) {
  .mobile-menu { display: none !important; }
}

main {
  flex: 1;
  padding-block: calc(var(--nav-h) + 3.5rem) 5rem;
}

/* Seitenkopf */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}
h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
}
.page-head p {
  margin-top: 0.9rem;
  color: var(--text-2);
}

/* Artikel-Liste (Übersicht) */
.post-list {
  list-style: none;
  margin-top: 2.8rem;
  display: grid;
  gap: 1rem;
}
.post-list a {
  display: block;
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.post-list a::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(240px at var(--cx, 50%) var(--cy, 50%), rgba(129, 140, 248, 0.09), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.post-list a:hover::before { opacity: 1; }
.post-list a:hover {
  transform: translateY(-2px);
  border-color: var(--border-hi);
  background: var(--surface-2);
}
.post-date {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-3);
}
.post-list h2 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0.35rem 0 0.3rem;
}
.post-list p { font-size: 0.94rem; color: var(--text-2); }

/* Artikel */
.back {
  display: inline-block;
  font-size: 0.88rem;
  color: var(--text-2);
  text-decoration: none;
  margin-bottom: 2.2rem;
}
.back:hover { color: var(--accent); }
.post-meta {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text-3);
  margin-top: 0.9rem;
}
.prose { margin-top: 2.6rem; }
.prose h2 {
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 2.4rem 0 0.8rem;
}
.prose h3 {
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 1.9rem 0 0.6rem;
}
.prose p { color: var(--text-2); margin-bottom: 1.1rem; text-wrap: pretty; }
.prose strong { color: var(--text); font-weight: 550; }
.prose ul, .prose ol { color: var(--text-2); margin: 0 0 1.1rem 1.3rem; }
.prose li { margin-bottom: 0.4rem; }
.prose a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dashed var(--border-hi);
}
.prose a:hover { border-color: var(--accent); }
.prose code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.1em 0.4em;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding-block: 2rem;
}
.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.86rem;
  color: var(--text-3);
}
.footer-row .sep { margin-inline: 0.5rem; opacity: 0.5; }
.footer-row a {
  color: var(--text-3);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-row a:hover { color: var(--text); }

@media (prefers-reduced-motion: reduce) {
  .bg-glow { animation: none; }
  .bg-grid-hi { display: none; }
  .mobile-menu.open { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .menu-btn { display: inline-flex; }
}