/*
  Projekt: Piding Intercom – Dokumentationsoberfläche
Version: 0.4.2 | 2026-08-02 23:21:06
  Datum: 2026-08-02
  Zweck: Gemeinsames, responsives Design für docs.html nach den verbindlichen
  PWA- und Web-GUI-Regeln des Projekts.
*/

@font-face {
  font-family: "Roboto Condensed";
  src: url("assets/roboto-condensed.ttf") format("truetype");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --color-background: #101214;
  --color-surface: #171a1d;
  --color-surface-raised: #1d2125;
  --color-border: #343a40;
  --color-text: #f3f4f4;
  --color-muted: #aab0b5;
  --color-accent: #f0b429;
  --color-success: #55c58a;
  --color-danger: #ef6b73;
  --color-warning: #e6b64f;
  --color-info: #70aee8;
  --shadow-raised: 0 1rem 2.5rem rgb(0 0 0 / 22%);
  --radius-large: 1rem;
  --radius-medium: .7rem;
  --content-width: 72rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 20rem;
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: "Roboto Condensed", sans-serif;
  font-size: 1.05rem;
  line-height: 1.55;
}

button, a { font: inherit; }

a { color: var(--color-info); }

a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: .18rem solid var(--color-accent);
  outline-offset: .2rem;
}

code {
  padding: .08rem .28rem;
  border: 1px solid var(--color-border);
  border-radius: .3rem;
  background: var(--color-background);
  color: var(--color-text);
  font-family: "Roboto Condensed", sans-serif;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: .75rem;
  left: .75rem;
  transform: translateY(-200%);
  padding: .55rem .8rem;
  border-radius: .4rem;
  background: var(--color-accent);
  color: var(--color-background);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.8rem;
  padding: .6rem max(1.25rem, calc((100% - var(--content-width)) / 2));
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-background) 94%, transparent);
  backdrop-filter: blur(.8rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  color: var(--color-text);
  line-height: 1.05;
  text-decoration: none;
}

.brand img { flex: 0 0 auto; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 1.2rem; }
.brand small { margin-top: .12rem; color: var(--color-muted); font-size: .82rem; }

.desktop-nav { display: flex; align-items: center; gap: 1.1rem; }
.desktop-nav a { color: var(--color-muted); font-size: .96rem; text-decoration: none; }
.desktop-nav a:hover { color: var(--color-text); }

.menu-toggle, .icon-button {
  display: inline-grid;
  place-items: center;
  min-width: 2.75rem;
  height: 2.75rem;
  padding: .45rem;
  border: 1px solid var(--color-border);
  border-radius: .55rem;
  background: var(--color-surface-raised);
  color: var(--color-text);
  cursor: pointer;
}

.menu-toggle { display: none; gap: .24rem; }
.menu-toggle span { display: block; width: 1.25rem; height: .12rem; border-radius: 1rem; background: var(--color-text); }
.icon-button { font-size: 1.55rem; line-height: 1; }

.mobile-menu {
  width: min(24rem, calc(100% - 2rem));
  max-height: min(42rem, calc(100dvh - 2rem));
  margin: 1rem 1rem 1rem auto;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-raised);
}

.mobile-menu::backdrop { background: rgb(0 0 0 / 62%); }
.mobile-menu-head { display: flex; align-items: center; justify-content: space-between; padding: 1rem; border-bottom: 1px solid var(--color-border); }
.mobile-menu nav { display: grid; max-height: calc(100dvh - 8rem); overflow: auto; padding: .6rem; }
.mobile-menu a { padding: .78rem .9rem; border-radius: .5rem; color: var(--color-text); text-decoration: none; }
.mobile-menu a:hover { background: var(--color-surface-raised); }

.section-shell { width: min(100% - 2.5rem, var(--content-width)); margin: 0 auto; padding: 4.5rem 0; }
.compact-top { padding-top: 0; padding-bottom: 1rem; }
.hero { padding-top: 5.8rem; }
.hero-grid, .two-column { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(16rem, .8fr); gap: 1.4rem; align-items: start; }
.eyebrow { margin: 0 0 .45rem; color: var(--color-accent); font-size: .88rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 17ch; margin-bottom: 1rem; font-size: clamp(2.6rem, 6vw, 5rem); line-height: .96; letter-spacing: -.025em; }
h2 { margin-bottom: .45rem; font-size: clamp(1.8rem, 3.5vw, 2.7rem); line-height: 1; }
h3 { margin-bottom: .5rem; font-size: 1.3rem; line-height: 1.1; }
p { color: var(--color-muted); }
.lead { max-width: 58ch; font-size: 1.25rem; }

.panel, .release-card, .history-card, .callout {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
}
.panel { padding: 1.25rem; }
.panel p:last-child, .panel ul:last-child { margin-bottom: 0; }
.panel ul { margin: .65rem 0 0; padding-left: 1.2rem; color: var(--color-muted); }
.panel li + li { margin-top: .38rem; }
.release-card { padding: 1.2rem; background: var(--color-surface-raised); }
.release-card dl { display: grid; gap: .7rem; margin: 1rem 0 0; }
.release-card dl div { display: flex; justify-content: space-between; gap: 1rem; }
.release-card dt { color: var(--color-muted); }
.release-card dd { margin: 0; text-align: right; }

.status { display: inline-flex; align-items: center; width: fit-content; padding: .22rem .55rem; border-radius: 999px; color: var(--color-background); font-size: .85rem; font-weight: 700; line-height: 1.2; }
.status.info { background: var(--color-info); }
.status.success { background: var(--color-success); }
.status.warning { background: var(--color-warning); }
.status.danger { background: var(--color-danger); }

.callout { display: flex; gap: .9rem; padding: 1rem 1.2rem; border-color: var(--color-info); }
.callout h2 { font-size: 1.25rem; }
.callout p { margin-bottom: 0; }
.callout-icon { display: grid; flex: 0 0 1.6rem; place-items: center; width: 1.6rem; height: 1.6rem; border-radius: 50%; background: var(--color-info); color: var(--color-background); font-weight: 800; }

.section-heading { max-width: 50rem; margin-bottom: 1.45rem; }
.section-heading p:last-child { margin-bottom: 0; }
.component-grid, .security-grid, .standards-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }

.flow-figure { margin: 1.4rem 0 0; padding: 1.2rem; border: 1px solid var(--color-border); border-radius: var(--radius-large); background: var(--color-surface-raised); }
.flow-figure figcaption { margin-bottom: 1rem; color: var(--color-muted); font-weight: 700; }
.section-note { margin: .85rem 0 0; padding: .7rem .85rem; border-left: .2rem solid var(--color-info); border-radius: 0 var(--radius-medium) var(--radius-medium) 0; background: var(--color-surface); font-size: .95rem; }
.flowchart { display: grid; grid-template-columns: minmax(7rem, 1fr) auto minmax(7rem, 1fr) auto minmax(6rem, .75fr) auto minmax(9rem, 1.2fr); gap: .6rem; align-items: center; }
.flow-node { padding: .8rem .55rem; border: 1px solid var(--color-border); border-radius: var(--radius-medium); background: var(--color-surface); color: var(--color-text); font-weight: 700; line-height: 1.05; text-align: center; }
.flow-node span, .flow-direct span { color: var(--color-muted); font-size: .82rem; font-weight: 400; }
.flow-node.saalfelden, .flow-node.piding { border-color: var(--color-info); }
.flow-node.pi { border-color: var(--color-success); }
.flow-node.mqtt { border-color: var(--color-accent); }
.flow-arrow { color: var(--color-muted); font-size: .8rem; text-align: center; white-space: nowrap; }
.flow-arrow.vertical { grid-column: 7; }
.flow-node.mqtt { grid-column: 6; }
.flow-node.pi { grid-column: 7; }
.flow-direct { grid-column: 1 / -1; margin-top: .7rem; padding: .75rem; border: 1px dashed var(--color-info); border-radius: var(--radius-medium); color: var(--color-info); font-weight: 700; text-align: center; }
.flow-node.piding { grid-column: 1; }

.table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-large); background: var(--color-surface); }
table { width: 100%; border-collapse: collapse; text-align: left; }
th, td { padding: 1rem; border-bottom: 1px solid var(--color-border); vertical-align: top; }
th { color: var(--color-muted); font-size: .9rem; font-weight: 700; }
tbody tr:last-child td { border-bottom: 0; }
.two-column { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 1rem; }

.timeline, .release-history { display: grid; gap: 1rem; margin: 0; padding: 0; list-style: none; }
.timeline li { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); gap: .9rem; align-items: start; }
.timeline li > span { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border-radius: 50%; background: var(--color-accent); color: var(--color-background); font-weight: 800; }
.timeline h3 { margin-bottom: .2rem; }
.timeline p { margin-bottom: 0; }
.check-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; }
.check-grid div { padding: .8rem; border-left: .2rem solid var(--color-success); border-radius: 0 var(--radius-medium) var(--radius-medium) 0; background: var(--color-surface); color: var(--color-muted); }
.history-card { padding: 1.15rem; }
.release-history li { display: grid; grid-template-columns: 10rem 4rem minmax(0, 1fr); gap: .8rem; align-items: baseline; }
.release-history time { color: var(--color-muted); }
.release-history span { color: var(--color-muted); }

.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .65rem 1.5rem; padding: 1.2rem max(1.25rem, calc((100% - var(--content-width)) / 2)); border-top: 1px solid var(--color-border); color: var(--color-muted); font-size: .9rem; }

@media (max-width: 900px) {
  .desktop-nav { gap: .7rem; }
  .desktop-nav a { font-size: .88rem; }
  .component-grid, .security-grid, .standards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flowchart { grid-template-columns: minmax(6rem, 1fr) auto minmax(6rem, 1fr) auto minmax(5.5rem, .7fr) auto minmax(7rem, 1fr); }
}

@media (max-width: 768px) {
  body { font-size: .94rem; }
  .site-header { min-height: 3.85rem; padding: .45rem 1rem; }
  .brand img { width: 30px; height: 30px; }
  .brand strong { font-size: 1.05rem; }
  .brand small { font-size: .72rem; }
  .desktop-nav { display: none; }
  .menu-toggle { display: grid; }
  .section-shell { width: min(100% - 1.5rem, var(--content-width)); padding: 2.6rem 0; }
  .compact-top { padding-top: 0; padding-bottom: .4rem; }
  .hero { padding-top: 3.2rem; }
  .hero-grid, .two-column, .component-grid, .security-grid, .standards-grid { grid-template-columns: 1fr; gap: .75rem; }
  .eyebrow { margin-bottom: .28rem; font-size: .76rem; }
  h1 { margin-bottom: .75rem; font-size: clamp(2.25rem, 13vw, 3.35rem); }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.15rem; }
  .lead { font-size: 1.08rem; }
  .section-heading { margin-bottom: .95rem; }
  .panel, .release-card, .flow-figure { padding: .9rem; border-radius: .75rem; }
  .callout { gap: .65rem; padding: .8rem; border-radius: .75rem; }
  .callout h2 { font-size: 1.1rem; }
  th, td { min-width: 8.2rem; padding: .7rem; }
  .flowchart { grid-template-columns: 1fr; gap: .38rem; }
  .flow-node, .flow-node.mqtt, .flow-node.pi, .flow-node.piding, .flow-arrow, .flow-arrow.vertical, .flow-direct { grid-column: 1; }
  .flow-arrow { padding: .05rem; transform: rotate(90deg); }
  .flow-arrow.vertical { transform: none; }
  .flow-direct { margin-top: .35rem; }
  .timeline { gap: .75rem; }
  .timeline li { grid-template-columns: 1.85rem minmax(0, 1fr); gap: .65rem; }
  .timeline li > span { width: 1.85rem; height: 1.85rem; }
  .check-grid { grid-template-columns: 1fr 1fr; gap: .55rem; }
  .check-grid div { padding: .65rem; }
  .release-history li { grid-template-columns: 1fr; gap: .2rem; }
  .site-footer { padding: 1rem; font-size: .78rem; }
}

@media (max-width: 420px) {
  .check-grid { grid-template-columns: 1fr; }
}