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%);
  --mint: oklch(70% .12 205);
  --panel: linear-gradient(#ffffff14, #08060608);
  --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;
  margin-left: auto;
}

.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, box-shadow .2s;
}

.header-inner nav a:hover {
  border-color: var(--mint);
  background: var(--mint);
  color: #000;
  box-shadow: 0 0 18px color-mix(in srgb, var(--mint) 65%, transparent),
    inset 0 0 10px rgb(255 255 255 / 28%);
}

.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 {
  border-color: rgb(255 255 255 / 16%);
  background: transparent;
  color: #fff;
}

.button.outline: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;
}