/* Lernwege Designsystem (Etappe 1, Oktober 2026)
   Gemeinsame Basis für die statischen Seiten (public/*.html) und die Next-App (per <link> in app/layout.tsx).
   Richtung: editorial, wie ein modernes Lehrmittel. Serife Source Serif 4 für Titel, Arial Nova für Text.
   Schriften werden selbst gehostet (public/fonts), keine externen Aufrufe. */

@font-face{font-family:"Source Serif 4";font-style:normal;font-weight:200 900;font-display:swap;src:url("/fonts/source-serif-4-latin-wght-normal.woff2") format("woff2")}
@font-face{font-family:"Source Serif 4";font-style:italic;font-weight:200 900;font-display:swap;src:url("/fonts/source-serif-4-latin-wght-italic.woff2") format("woff2")}

:root{
  --navy:#1E3246;--terra:#B84816;--ochre:#F1A51A;--cream:#F2F4F6;--bg:#FFFFFF;--menu:rgba(255,255,255,.92);
  --paper:#F7F8FA;--ink:#1E3246;--ink-soft:#5B6572;--ink-faint:#8A93A0;
  --line:#E1E4E8;--line-strong:#C9CED5;--card:#fff;
  --navy-soft:#2B4259;--terra-deep:#9A3A10;
  --ok:#2F8F6F;--err:#B8321A;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Arial Nova Light","Arial Nova",Arial,ui-sans-serif,system-ui,sans-serif;
  --r:8px;--r-lg:12px;
  --wrap:1120px;
  --shadow:0 1px 2px rgba(30,50,70,.05),0 12px 32px rgba(30,50,70,.06);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html,body{overflow-x:clip}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.55;font-size:1rem}
img,iframe,svg,video{max-width:100%}
a{color:var(--terra)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 clamp(1rem,3vw,1.5rem)}

/* Typografie */
.serif{font-family:var(--serif)}
.display{font-family:var(--serif);font-weight:500;letter-spacing:-.015em;line-height:1.02;font-size:clamp(2.5rem,5.4vw,4.3rem);margin:0 0 1.1rem}
.display em{font-style:italic;font-weight:400;color:var(--terra)}
h1,h2{font-family:var(--serif);font-weight:500;letter-spacing:-.01em;line-height:1.1;color:var(--ink)}
h1{font-size:clamp(1.9rem,4vw,2.7rem);margin:0 0 .6rem}
h2{font-size:clamp(1.7rem,3vw,2.4rem);margin:0 0 .9rem}
h3{font-family:var(--sans);font-weight:600;font-size:1.05rem;margin:0 0 .35rem;line-height:1.25}
.kicker{font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--terra);font-weight:600;margin:0 0 .6rem}
p.lead,.lead{font-size:clamp(1.05rem,1.6vw,1.2rem);color:var(--ink-soft);margin:0 0 1.5rem;max-width:58ch;line-height:1.5}
.muted{color:var(--ink-soft)}
.small-note{font-size:.8rem;color:var(--ink-soft)}
hr.rule{border:0;border-top:1px solid var(--line-strong);margin:0}

/* Kopfzeile */
.lw-header{position:sticky;top:0;z-index:40;background:var(--menu);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.lw-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:64px}
.wordmark{display:flex;align-items:baseline;gap:.55rem;text-decoration:none;color:var(--ink)}
.wordmark .name{font-family:var(--serif);font-weight:600;font-size:1.45rem;letter-spacing:-.01em;line-height:1}
.wordmark .by{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--terra);font-weight:600}
.lw-nav{display:flex;align-items:center;gap:1.4rem;font-size:.93rem}
.lw-nav a{color:var(--ink);text-decoration:none;white-space:nowrap}
.lw-nav a:hover{color:var(--terra)}
.lw-nav a.btn.terra,.lw-nav a.btn.terra:hover{color:#fff}
.lw-nav .who{color:var(--ink-soft);font-size:.86rem}
.lw-nav form{margin:0;display:flex}
.menu{display:none}
@media (max-width:1080px){
  .lw-nav{display:none}
  .menu{display:block;position:relative}
  .menu summary{list-style:none;cursor:pointer;font-size:.92rem;font-weight:600;padding:.5rem .8rem;border:1px solid var(--line-strong);border-radius:var(--r);background:#fff}
  .menu summary::-webkit-details-marker{display:none}
  .menu[open] summary{background:var(--navy);color:#fff;border-color:var(--navy)}
  .menu .panel{position:absolute;right:0;top:calc(100% + .5rem);min-width:230px;background:#fff;border:1px solid var(--line-strong);border-radius:var(--r-lg);box-shadow:var(--shadow);padding:.5rem;display:flex;flex-direction:column}
  .menu .panel a,.menu .panel button{display:block;padding:.6rem .8rem;color:var(--ink);text-decoration:none;border-radius:var(--r);font:inherit;font-size:.95rem;background:none;border:0;text-align:left;cursor:pointer;width:100%}
  .menu .panel a:hover{background:var(--cream)}
  .menu .panel .who{padding:.4rem .8rem .2rem;font-size:.8rem;color:var(--ink-soft)}
}

/* Knöpfe */
.btn{font:inherit;font-size:.93rem;font-weight:600;background:var(--navy);color:#fff;border:1px solid var(--navy);border-radius:var(--r);padding:.7rem 1.25rem;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:.5rem;line-height:1.2;transition:background .15s,border-color .15s,color .15s}
.btn:hover{background:var(--navy-soft);border-color:var(--navy-soft);color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.terra{background:var(--terra);border-color:var(--terra)}
.btn.terra:hover{background:var(--terra-deep);border-color:var(--terra-deep)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn.ghost:hover{background:#fff;color:var(--terra);border-color:var(--terra)}
.btn.ms{background:#fff;color:var(--navy);border-color:var(--line-strong)}
.btn.ms:hover{background:var(--paper)}
.btn.small{font-size:.82rem;padding:.42rem .85rem}
.btn.block{width:100%;justify-content:center}
.arrow::after{content:"→";margin-left:.35rem;transition:transform .15s;display:inline-block}
.arrow:hover::after{transform:translateX(3px)}
.link{color:var(--terra);font-weight:600;text-decoration:none}
.link:hover{text-decoration:underline}

/* Abschnitte */
.sec{padding:clamp(3rem,7vw,5.5rem) 0}
.sec.paper{background:var(--cream)}
.sec.navy{background:var(--navy);color:#fff}
.sec.navy h2,.sec.navy h3{color:#fff}
.sec.navy .kicker{color:var(--ochre)}
.sec.navy .lead,.sec.navy .muted{color:#C9D2DC}
.sec-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:clamp(1.5rem,4vw,4rem);align-items:start}
.sec-grid > *{min-width:0}
@media (max-width:820px){.sec-grid{grid-template-columns:1fr}}
.sec-head h2{margin-bottom:.4rem}
.sec-head p{margin:0;color:var(--ink-soft);max-width:60ch}

/* Zeilen mit Haarlinien statt Karten */
.rows{margin:0;padding:0;list-style:none;border-top:1px solid var(--line-strong)}
.rows > li{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:.4rem 2rem;padding:1.3rem 0;border-bottom:1px solid var(--line)}
.rows > li > *{min-width:0}
.rows .t{font-family:var(--serif);font-weight:500;font-size:1.35rem;line-height:1.15;margin:0}
.rows .t small{display:block;font-family:var(--sans);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--terra);font-weight:600;margin-top:.35rem}
.rows p{margin:0 0 .5rem;color:var(--ink-soft)}
.rows p:last-child{margin-bottom:0}
@media (max-width:640px){.rows > li{grid-template-columns:1fr}}

/* Schritte */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.5rem}
.steps > div{border-top:2px solid var(--navy);padding-top:1rem}
.steps .n{font-family:var(--serif);font-size:2.6rem;font-weight:300;line-height:1;color:var(--terra);margin:0 0 .5rem;font-variant-numeric:tabular-nums}
.steps p{margin:0;color:var(--ink-soft);font-size:.95rem}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.steps{grid-template-columns:1fr}}

/* Kennzahlen */
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.2rem;border-top:1px solid var(--line-strong);padding-top:1.2rem;margin-top:1.8rem}
.facts b{display:block;font-family:var(--serif);font-weight:500;font-size:1.6rem;line-height:1.05;letter-spacing:-.01em}
.facts span{display:block;font-size:.82rem;color:var(--ink-soft);margin-top:.3rem}
@media (max-width:480px){.facts{grid-template-columns:1fr;gap:.9rem}}

/* Beispiele */
.examples{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.6rem 1.4rem}
@media (max-width:900px){.examples{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:540px){.examples{grid-template-columns:1fr}}
.ex{display:block;text-decoration:none;color:inherit}
.ex .shot{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;object-position:top;border:1px solid var(--line-strong);border-radius:var(--r);background:#fff;transition:transform .2s,box-shadow .2s}
.ex:hover .shot{transform:translateY(-3px);box-shadow:var(--shadow)}
.ex .k{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--terra);font-weight:600;margin:.8rem 0 .15rem}
.ex .t{font-family:var(--serif);font-weight:500;font-size:1.25rem;line-height:1.2;margin:0}
.ex p{margin:.3rem 0 0;font-size:.9rem;color:var(--ink-soft)}

/* Fusszeile */
.lw-footer{background:var(--navy);color:#C3CCD6;padding:3rem 0 2rem;font-size:.9rem}
.lw-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem}
@media (max-width:820px){.lw-footer .cols{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.lw-footer .cols{grid-template-columns:1fr}}
.lw-footer h4{font-family:var(--sans);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ochre);margin:0 0 .7rem;font-weight:600}
.lw-footer a:not(.wordmark){color:#fff;text-decoration:none;display:block;margin:.3rem 0}
.lw-footer .wordmark{display:inline-flex}
.lw-footer a:hover{color:var(--ochre)}
.lw-footer .wordmark{color:#fff}
.lw-footer .wordmark .by{color:var(--ochre)}
.lw-footer .bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:2.2rem;padding-top:1.2rem;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.8rem;color:#9AA6B4}
.lw-footer .bottom a{display:inline;margin:0;color:#C3CCD6}

/* Formularelemente (App) */
label{display:block;font-size:.88rem;font-weight:600;margin:.8rem 0 .25rem}
input,select,textarea{font:inherit;width:100%;padding:.62rem .8rem;border:1px solid var(--line-strong);border-radius:var(--r);background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--terra);outline-offset:1px;border-color:var(--terra)}
textarea{min-height:90px;resize:vertical}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.4rem 1.5rem}
.badge{display:inline-block;font-size:.72rem;font-weight:600;border-radius:4px;padding:.15rem .55rem;margin-bottom:.5rem;background:#E9EEF3;color:var(--navy);letter-spacing:.02em}
.badge.new{background:var(--ochre)}
.badge.ok{background:#DFF3EA;color:#1F6B50}
.badge.off{background:#F6DCD5;color:#8A2A14}
.lw-nav a.is-active{color:var(--terra);font-weight:600}