/* =========================================================================
   fm5.de-Cloud · Lehr-Studio — Portal-Landingpage
   Vanilla CSS, keine Frameworks, keine CDNs. Same-origin Fonts.
   Palette + Typo aus dem fm5.de-Cloud-Design (Creme + fm5-Blau, Inter).
   ========================================================================= */

/* ---- Fonts (same-origin) ---- */
@font-face {
  font-family: 'Inter';
  src: url('./fonts/InterVariable.woff2') format('woff2-variations');
  font-weight: 100 900; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('./fonts/JetBrainsMono-Medium.woff2') format('woff2');
  font-weight: 500 700; font-style: normal; font-display: swap;
}

/* ---- Design-Tokens ---- */
:root {
  --cream:        #F5F1E8;
  --cream-2:      #FBF8F0;
  --cream-sunken: #EDE7D9;
  --ink:          #1C1A15;
  --ink-2:        #5E584B;
  --ink-3:        #837c6b;
  --blue:         #1a4a99;
  --blue-strong:  #0049C1;
  --blue-2:       #2c62c4;
  --sky:          #36a9e1;
  --line:         color-mix(in oklab, var(--ink) 12%, transparent);
  --line-strong:  color-mix(in oklab, var(--ink) 22%, transparent);

  --bg:           var(--cream);
  --surface:      var(--cream-2);
  --surface-2:    #ffffff;
  --fg:           var(--ink);
  --fg-muted:     var(--ink-2);
  --fg-faint:     var(--ink-3);
  --accent:       var(--blue);
  --accent-ink:   #ffffff;

  --radius:       18px;
  --radius-lg:    26px;
  --radius-pill:  999px;
  --shadow-sm:    0 1px 2px rgba(28,26,21,.06), 0 2px 8px rgba(28,26,21,.05);
  --shadow-md:    0 6px 20px rgba(28,26,21,.08), 0 2px 6px rgba(28,26,21,.05);
  --shadow-lg:    0 24px 60px -20px rgba(26,74,153,.28), 0 8px 24px rgba(28,26,21,.10);
  --ring:         color-mix(in oklab, var(--blue) 55%, transparent);

  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --maxw: 1140px;
  --aurora-1: color-mix(in oklab, var(--blue) 50%, transparent);
  --aurora-2: color-mix(in oklab, var(--sky) 55%, transparent);
  --aurora-3: color-mix(in oklab, #7c9fe0 60%, transparent);
  --aurora-opacity: .55;
}

:root[data-theme='dark'] {
  --bg:         #141310;
  --surface:    #1d1b16;
  --surface-2:  #26231c;
  --fg:         #F1ECDF;
  --fg-muted:   #b5ae9c;
  --fg-faint:   #8e8672;
  --accent:     #6f9bec;
  --accent-ink: #0d1526;
  --line:        color-mix(in oklab, #F1ECDF 12%, transparent);
  --line-strong: color-mix(in oklab, #F1ECDF 20%, transparent);
  --shadow-lg:  0 24px 60px -18px rgba(0,0,0,.6), 0 8px 24px rgba(0,0,0,.4);
  --ring:       color-mix(in oklab, #6f9bec 65%, transparent);
  --aurora-opacity: .40;
  --aurora-1: color-mix(in oklab, #2c62c4 60%, transparent);
  --aurora-2: color-mix(in oklab, #1f7bb0 55%, transparent);
  --aurora-3: color-mix(in oklab, #4a5db0 60%, transparent);
}
@media (prefers-color-scheme: dark) {
  :root[data-theme='auto'] {
    --bg: #141310; --surface: #1d1b16; --surface-2: #26231c;
    --fg: #F1ECDF; --fg-muted: #b5ae9c; --fg-faint: #8e8672;
    --accent: #6f9bec; --accent-ink: #0d1526;
    --line: color-mix(in oklab, #F1ECDF 12%, transparent);
    --line-strong: color-mix(in oklab, #F1ECDF 20%, transparent);
    --shadow-lg: 0 24px 60px -18px rgba(0,0,0,.6), 0 8px 24px rgba(0,0,0,.4);
    --ring: color-mix(in oklab, #6f9bec 65%, transparent);
    --aurora-opacity: .40;
    --aurora-1: color-mix(in oklab, #2c62c4 60%, transparent);
    --aurora-2: color-mix(in oklab, #1f7bb0 55%, transparent);
    --aurora-3: color-mix(in oklab, #4a5db0 60%, transparent);
  }
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.075rem);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100dvh;
}
a { color: inherit; }
img, svg { display: block; }
:focus-visible { outline: 3px solid var(--ring); outline-offset: 3px; border-radius: 6px; }
::selection { background: color-mix(in oklab, var(--blue) 30%, transparent); }

/* ---- Aurora-Hintergrund ---- */
.aurora {
  position: fixed; inset: -20vmax; z-index: -1; pointer-events: none;
  filter: blur(72px) saturate(1.1);
  opacity: var(--aurora-opacity);
}
.aurora__blob {
  position: absolute; border-radius: 50%;
  width: 46vmax; height: 46vmax;
  mix-blend-mode: normal;
  will-change: transform;
}
.aurora__blob--1 { background: radial-gradient(circle at 30% 30%, var(--aurora-1), transparent 62%); top: -8vmax; left: -6vmax; animation: drift1 26s ease-in-out infinite alternate; }
.aurora__blob--2 { background: radial-gradient(circle at 60% 40%, var(--aurora-2), transparent 62%); top: 8vmax; right: -10vmax; animation: drift2 32s ease-in-out infinite alternate; }
.aurora__blob--3 { background: radial-gradient(circle at 50% 60%, var(--aurora-3), transparent 64%); bottom: -14vmax; left: 24vmax; animation: drift3 30s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate3d(8vmax, 6vmax, 0) scale(1.12); } }
@keyframes drift2 { to { transform: translate3d(-7vmax, 5vmax, 0) scale(1.08); } }
@keyframes drift3 { to { transform: translate3d(5vmax, -6vmax, 0) scale(1.14); } }
@media (prefers-reduced-motion: reduce) { .aurora__blob { animation: none !important; } }

/* ---- Layout-Helfer ---- */
main, .site-header, .site-footer__inner { }
.hero, .apps, .values, .cta-band { max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.25rem, 5vw, 2.5rem); }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(.9rem, 2vw, 1.15rem) clamp(1.25rem, 5vw, 2.5rem);
  background: color-mix(in oklab, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.site-header.is-stuck { border-bottom-color: var(--line); }
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; color: var(--fg); }
.brand__mark { color: var(--blue); display: grid; place-items: center; }
:root[data-theme='dark'] .brand__mark, .site-footer .brand__mark { color: var(--accent); }
.brand__text { display: flex; flex-direction: column; line-height: 1.05; }
.brand__suite { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; color: var(--blue); font-weight: 600; }
:root[data-theme='dark'] .brand__suite { color: var(--accent); }
.brand__app { font-weight: 700; font-size: 1.12rem; letter-spacing: -.01em; }
.site-nav { display: flex; align-items: center; gap: clamp(.5rem, 2vw, 1.5rem); }
.site-nav > a { text-decoration: none; color: var(--fg-muted); font-weight: 500; font-size: .95rem; padding: .4rem .2rem; position: relative; transition: color .2s ease; }
.site-nav > a:hover { color: var(--fg); }
.site-nav > a::after { content: ''; position: absolute; left: .2rem; right: .2rem; bottom: .1rem; height: 2px; background: var(--accent); border-radius: 2px; transform: scaleX(0); transform-origin: left; transition: transform .25s ease; }
.site-nav > a:hover::after { transform: scaleX(1); }
@media (max-width: 560px) { .site-nav > a { display: none; } }

.theme-toggle {
  display: grid; place-items: center; width: 40px; height: 40px;
  border: 1px solid var(--line-strong); border-radius: var(--radius-pill);
  background: var(--surface); color: var(--fg); cursor: pointer;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.theme-toggle:hover { background: var(--surface-2); transform: translateY(-1px); border-color: var(--accent); color: var(--accent); }
.theme-toggle__moon { display: none; }
:root[data-theme='dark'] .theme-toggle__sun { display: none; }
:root[data-theme='dark'] .theme-toggle__moon { display: block; }
@media (prefers-color-scheme: dark) { :root[data-theme='auto'] .theme-toggle__sun { display: none; } :root[data-theme='auto'] .theme-toggle__moon { display: block; } }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  padding: .8rem 1.4rem; border-radius: var(--radius-pill);
  border: 1px solid transparent; transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn--primary { background: var(--blue); color: #fff; box-shadow: var(--shadow-md); }
.btn--primary:hover { background: var(--blue-2); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
:root[data-theme='dark'] .btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--ghost { background: color-mix(in oklab, var(--surface) 70%, transparent); color: var(--fg); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ---- Hero ---- */
.hero { padding-top: clamp(3.5rem, 12vh, 8rem); padding-bottom: clamp(3rem, 9vh, 6rem); text-align: center; }
.hero__eyebrow { font-family: var(--font-mono); font-weight: 600; letter-spacing: .14em; text-transform: uppercase; font-size: .8rem; color: var(--blue); }
:root[data-theme='dark'] .hero__eyebrow { color: var(--accent); }
.hero__title { margin-top: .8rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.02; }
.hero__title-line {
  display: block; font-size: clamp(3rem, 9vw, 6rem);
  background: linear-gradient(115deg, var(--blue) 0%, var(--sky) 55%, var(--blue-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  padding-bottom: .06em;
}
:root[data-theme='dark'] .hero__title-line { background: linear-gradient(115deg, #86b0ff, #4fc3f7 60%, #9db4ff); -webkit-background-clip: text; background-clip: text; }
.hero__title-sub { display: block; font-size: clamp(1.15rem, 2.6vw, 1.8rem); font-weight: 600; letter-spacing: -.01em; color: var(--fg); margin-top: .35rem; }
.hero__lead { max-width: 42ch; margin: 1.3rem auto 0; color: var(--fg-muted); font-size: clamp(1.02rem, 1.4vw, 1.2rem); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .8rem; justify-content: center; margin-top: 2rem; }
.hero__note { margin-top: 1.6rem; font-size: .85rem; color: var(--fg-faint); display: inline-flex; align-items: center; gap: .5rem; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #29b36b; box-shadow: 0 0 0 0 color-mix(in oklab, #29b36b 60%, transparent); animation: pulse 2.4s ease-out infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in oklab, #29b36b 55%, transparent); } 70% { box-shadow: 0 0 0 9px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
@media (prefers-reduced-motion: reduce) { .dot { animation: none; } }

/* ---- Section-Head ---- */
.section-head { text-align: center; max-width: 46ch; margin: 0 auto clamp(2rem, 5vw, 3.2rem); }
.section-head__eyebrow { font-family: var(--font-mono); font-weight: 600; letter-spacing: .1em; text-transform: uppercase; font-size: .76rem; color: var(--fg-faint); }
.section-head__title { font-size: clamp(1.7rem, 4vw, 2.6rem); font-weight: 800; letter-spacing: -.02em; margin-top: .5rem; }
.section-head__lead { margin-top: .8rem; color: var(--fg-muted); }

.apps, .values { padding-block: clamp(3rem, 8vh, 5.5rem); }

/* ---- App-Karten ---- */
.app-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: clamp(1rem, 2.5vw, 1.6rem); }
.card {
  position: relative; display: flex; flex-direction: column;
  padding: clamp(1.5rem, 3vw, 2rem); border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--surface) 86%, transparent);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  text-decoration: none; color: var(--fg);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  overflow: hidden;
  transition: transform .28s cubic-bezier(.2,.7,.3,1), box-shadow .28s ease, border-color .28s ease;
}
.card::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, color-mix(in oklab, var(--blue) 45%, transparent), transparent 40%, color-mix(in oklab, var(--sky) 40%, transparent));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .28s ease;
}
.card--live:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card--live:hover::before { opacity: 1; }
.card__status {
  align-self: flex-start; font-family: var(--font-mono); font-size: .7rem; font-weight: 600;
  letter-spacing: .04em; text-transform: uppercase;
  padding: .28rem .7rem; border-radius: var(--radius-pill);
  color: #0f7a44; background: color-mix(in oklab, #29b36b 18%, transparent);
  border: 1px solid color-mix(in oklab, #29b36b 40%, transparent);
}
:root[data-theme='dark'] .card__status { color: #5fe0a0; }
.card__status--soon { color: var(--fg-faint); background: color-mix(in oklab, var(--ink) 6%, transparent); border-color: var(--line-strong); }
:root[data-theme='dark'] .card__status--soon { background: color-mix(in oklab, #fff 5%, transparent); }
.card__icon { color: var(--blue); margin: 1.4rem 0 1.1rem; }
:root[data-theme='dark'] .card__icon { color: var(--accent); }
.card--soon .card__icon, .card--soon .card__title { color: var(--fg-faint); }
.card__title { font-size: 1.35rem; font-weight: 700; letter-spacing: -.01em; }
.card__desc { margin-top: .6rem; color: var(--fg-muted); flex: 1; }
.card__cta { display: inline-flex; align-items: center; gap: .4rem; margin-top: 1.4rem; font-weight: 600; color: var(--blue); }
:root[data-theme='dark'] .card__cta { color: var(--accent); }
.card__cta svg { transition: transform .25s ease; }
.card--live:hover .card__cta svg { transform: translateX(4px); }
.card__cta--muted { color: var(--fg-faint); }
.card--soon { cursor: default; }

/* ---- Prinzipien ---- */
.value-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: clamp(1rem, 2.5vw, 1.4rem); list-style: none; padding: 0; }
.value {
  padding: clamp(1.3rem, 2.5vw, 1.7rem); border-radius: var(--radius);
  background: color-mix(in oklab, var(--surface) 70%, transparent);
  border: 1px solid var(--line);
  transition: transform .25s ease, border-color .25s ease;
}
.value:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.value__icon { font-size: 1.6rem; color: var(--blue); display: inline-flex; height: 1.9rem; align-items: center; }
:root[data-theme='dark'] .value__icon { color: var(--accent); }
.value__title { margin-top: .8rem; font-size: 1.1rem; font-weight: 700; }
.value__desc { margin-top: .4rem; color: var(--fg-muted); font-size: .96rem; }

/* ---- CTA-Band ---- */
.cta-band {
  text-align: center; margin-block: clamp(2rem, 6vh, 4rem);
  padding: clamp(2.5rem, 6vw, 4rem) clamp(1.5rem, 5vw, 3rem);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 140% at 50% -20%, color-mix(in oklab, var(--sky) 22%, transparent), transparent 60%),
    linear-gradient(160deg, color-mix(in oklab, var(--blue) 16%, var(--surface)), var(--surface));
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}
.cta-band__title { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 800; letter-spacing: -.02em; }
.cta-band__lead { margin-top: .6rem; color: var(--fg-muted); }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: .8rem; justify-content: center; margin-top: 1.6rem; }

/* ---- Footer ---- */
.site-footer { margin-top: clamp(3rem, 8vh, 5rem); border-top: 1px solid var(--line); }
.site-footer__inner { max-width: var(--maxw); margin: 0 auto; padding: clamp(2rem, 5vw, 3rem) clamp(1.25rem, 5vw, 2.5rem); display: flex; flex-wrap: wrap; gap: 1.2rem 2rem; align-items: center; justify-content: space-between; }
.site-footer__brand { display: flex; flex-direction: column; line-height: 1.1; }
.site-footer__links { display: flex; gap: 1.3rem; }
.site-footer__links a { color: var(--fg-muted); text-decoration: none; font-size: .95rem; transition: color .2s ease; }
.site-footer__links a:hover { color: var(--accent); }
.site-footer__copy { color: var(--fg-faint); font-size: .85rem; flex-basis: 100%; }

/* ---- Scroll-Reveal (nur mit JS: Content ist ohne JS sofort sichtbar) ---- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.app-grid .card.reveal, .value-grid .value.reveal { transition-delay: calc(var(--i, 0) * 80ms); }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }