PM_Project/css/base.css

/* Gemeinsame Basis, Header, Buttons und Footer aus TriHub Design Original. */
/* 1. Grundlagen und Typografie */
:root {
  --page: var(--background);
  --text: #fff;
  --muted: rgb(255 255 255 / 70%);
  --quiet: rgb(255 255 255 / 56%);
  --line: rgb(255 255 255 / 10%);
  --panel: linear-gradient(#ffffff14, #ffffff08);
  --ease: cubic-bezier(.22, 1, .36, 1);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 120px; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: var(--font-sans), sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
main { overflow: clip; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 {
  font-family: var(--font-display), sans-serif;
  font-weight: 700;
  letter-spacing: -.04em;
  text-wrap: balance;
}
h1, h2 { line-height: 1.12; }
h3 { line-height: 1.35; }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
button { cursor: pointer; border: 0; }
button, a, select { -webkit-tap-highlight-color: transparent; }
a, button, select { touch-action: manipulation; }
:where(button, a, select):focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 5px;
}
img { display: block; max-width: 100%; object-fit: cover; }
button:disabled { cursor: default; }
[hidden] { display: none !important; }
.shell { width: min(1280px, calc(100% - 128px)); margin-inline: auto; }

/* 2. Kopfbereich – Website-Logo ganz links, wie auf der Referenzseite */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(
    color-mix(in oklab, var(--background) 95%, transparent),
    color-mix(in oklab, var(--background) 80%, transparent)
  );
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.header-inner {
  width: calc(100% - 64px);
  min-height: 98px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 74px;
  height: 66px;
  padding: 8px 12px;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 12%);
  border-radius: 1.1rem;
  background: #fff;
  box-shadow: 0 14px 34px rgb(0 0 0 / 22%);
}
.brand-logo img { width: 48px; height: 48px; object-fit: contain; }
.brand-copy { display: grid; gap: 3px; }
.brand-name {
  color: var(--quiet);
  font-size: .75rem;
  letter-spacing: .28em;
  text-transform: uppercase;
}
.brand-sub { color: var(--muted); font-size: .875rem; line-height: 1.5; }
.header-inner nav { display: flex; align-items: center; gap: 5px; }
.header-inner nav a {
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  font-size: .875rem;
  white-space: nowrap;
  transition: color .2s, background .2s, border-color .2s;
}
.header-inner nav a:hover,
.header-inner nav a[aria-current] {
  border-color: var(--line);
  background: rgb(255 255 255 / 5%);
  color: #fff;
}
.menu-toggle { display: none; }
.skip {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 100;
  padding: 12px 20px;
  border-radius: 999px;
  background: #fff;
  color: var(--ink-strong);
}
.skip:focus { top: 12px; }

/* 3. Buttons – weiße Primär-CTAs, zurückhaltende Konturen */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 14px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: #fff;
  color: var(--ink-strong);
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.45;
  text-align: center;
  transition: background .25s, border-color .25s, transform .25s var(--ease);
}
.button:hover { background: #e9edf0; transform: translateY(-2px); }
.button.small { min-height: 42px; padding: 10px 20px; font-size: .875rem; }
.button.outline, .header-cta {
  border-color: rgb(255 255 255 / 16%);
  background: transparent;
  color: #fff;
}
.button.outline:hover, .header-cta:hover {
  border-color: rgb(255 255 255 / 28%);
  background: rgb(255 255 255 / 7%);
}
.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 0;
  border-bottom: 1px solid rgb(255 255 255 / 28%);
  background: transparent;
  color: rgb(255 255 255 / 86%);
  font-size: .9375rem;
  font-weight: 500;
  line-height: 1.4;
  transition: color .2s, border-color .2s;
}
.text-link:hover { color: #fff; border-color: #fff; }


/* Footer */
footer { border-top: 1px solid var(--line); background: var(--sidebar); }
.footer-main { display: flex; align-items: center; gap: 24px; padding-block: 32px; }
.footer-main p { color: var(--muted); font-size: .9375rem; }
.footer-main > a:last-child { margin-left: auto; color: var(--muted); font-size: .875rem; }
.footer-main > a:last-child:hover { color: #fff; }
.footer-note { display: flex; justify-content: space-between; gap: 24px; padding-block: 20px; border-top: 1px solid var(--line); color: var(--quiet); font-size: .75rem; }