/* Digitale Visitenkarte — Look der Homepage: JetBrains Mono, Congo-Palette
 * (violettes Primary), Schwarz im Dark-Mode, Bitmuster-Leisten oben/unten. */

@font-face {
  font-family: "JetBrains Mono";
  src:
    url("fonts/JetBrainsMono-Regular.woff2") format("woff2"),
    url("fonts/JetBrainsMono-Regular.woff") format("woff");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src:
    url("fonts/JetBrainsMono-Medium.woff2") format("woff2"),
    url("fonts/JetBrainsMono-Medium.woff") format("woff");
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src:
    url("fonts/JetBrainsMono-Bold.woff2") format("woff2"),
    url("fonts/JetBrainsMono-Bold.woff") format("woff");
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src:
    url("fonts/JetBrainsMono-ExtraBold.woff2") format("woff2"),
    url("fonts/JetBrainsMono-ExtraBold.woff") format("woff");
  font-weight: 800;
  font-display: swap;
}

:root {
  --neutral: 255 255 255;
  --neutral-100: 244 244 245;
  --neutral-300: 212 212 216;
  --neutral-400: 161 161 170;
  --neutral-500: 113 113 122;
  --neutral-700: 63 63 70;
  --neutral-800: 39 39 42;
  --neutral-900: 24 24 27;
  --primary-400: 167 139 250;
  --primary-500: 139 92 246;
  --primary-600: 124 58 237;
  --primary-700: 109 40 217;

  --bg: #000;
  --fg: rgb(var(--neutral));
  --muted: rgb(var(--neutral-400));
  --border: rgb(var(--neutral-700));
  --accent: rgb(var(--primary-400));
  --accent-strong: rgb(var(--primary-600));
  --accent-hover: rgb(var(--primary-700));
  --strip-invert: invert(1);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: rgb(var(--neutral));
    --fg: rgb(var(--neutral-900));
    --muted: rgb(var(--neutral-500));
    --border: rgb(var(--neutral-300));
    --accent: rgb(var(--primary-600));
    --strip-invert: none;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg);
  color: var(--fg);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 1.125rem;
  line-height: 1.75rem;
  -webkit-font-smoothing: antialiased;
}

.strip {
  width: 100%;
  height: 24px;
  flex: none;
  background-image: url("img/header.png");
  background-size: 300px;
  background-repeat: repeat-x;
  filter: var(--strip-invert);
}

.strip.bottom {
  background-image: url("img/footer.png");
}

.card-wrap {
  flex: 1;
  display: grid;
  place-items: center;
  width: 100%;
  padding: 2rem 1.25rem;
}

.card {
  width: 100%;
  max-width: 26rem;
  text-align: center;
}

.portrait {
  width: 10rem;
  height: 10rem;
  border-radius: 100%;
  object-fit: cover;
  box-shadow: 0 0 0 4px rgb(var(--primary-500) / 0.55);
}

h1 {
  margin: 1.25rem 0 0;
  font-size: 1.875rem;
  line-height: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.015em;
}

.subtitle {
  margin: 0.375rem 0 0;
  font-size: 1.0625rem;
  color: var(--muted);
}

.tagline {
  margin: 0.125rem 0 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

.links {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.375rem;
}

.links a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  min-width: 4.25rem;
  padding: 0.65rem 0.4rem 0.5rem;
  border-radius: 0.75rem;
  color: var(--fg);
  text-decoration: none;
  font-size: 0.78rem;
}

.links a:hover {
  background: rgb(var(--primary-500) / 0.14);
  color: var(--accent);
}

.links svg {
  width: 1.6rem;
  height: 1.6rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.links svg.brand {
  fill: currentColor;
  stroke: none;
}

.actions {
  margin-top: 1.75rem;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.button {
  appearance: none;
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--fg);
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.button.primary {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #fff;
}

.button.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.qr-toggle {
  margin-top: 1.75rem;
  appearance: none;
  border: none;
  background: none;
  padding: 0;
  color: var(--muted);
  font: inherit;
  font-size: 0.9375rem;
  cursor: pointer;
}

.qr-toggle:hover {
  color: var(--accent);
}

#qr-dialog {
  border: none;
  border-radius: 1rem;
  padding: 0;
  background: transparent;
}

#qr-dialog::backdrop {
  background: rgb(0 0 0 / 0.65);
  backdrop-filter: blur(2px);
}

.qr-box {
  padding: 1rem;
  background: #fff;
  border-radius: 1rem;
}

.qr-box img {
  display: block;
}

footer {
  margin-top: 2.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

footer a {
  color: inherit;
  text-decoration: none;
}

footer a:hover {
  color: var(--accent);
}