/*
Theme Name:  Oliver Kolbe
Theme URI:   https://www.oliverkolbe.de
Author:      Aufbau 2026
Description: Schlankes Theme für die Referenten- und Forschungsseite von Dr.-Ing. Oliver Kolbe.
             Kein Page Builder, keine Fremdabhängigkeiten, barrierefrei angelegt.
             Schrift: Atkinson Hyperlegible (Braille Institute), selbst gehostet.
Version:     1.0.0
Requires at least: 6.4
Requires PHP: 8.0
Text Domain: oliverkolbe
*/

/* ===========================================================================
   Schriften – selbst gehostet, damit keine Verbindung zu Google Fonts entsteht
   (Dateien nach assets/fonts/ legen, siehe TODO.md)
   ========================================================================= */
@font-face{
  font-family:"Atkinson Hyperlegible";font-style:normal;font-weight:400;font-display:swap;
  src:url("assets/fonts/AtkinsonHyperlegible-Regular.woff2") format("woff2");
}
@font-face{
  font-family:"Atkinson Hyperlegible";font-style:italic;font-weight:400;font-display:swap;
  src:url("assets/fonts/AtkinsonHyperlegible-Italic.woff2") format("woff2");
}
@font-face{
  font-family:"Atkinson Hyperlegible";font-style:normal;font-weight:700;font-display:swap;
  src:url("assets/fonts/AtkinsonHyperlegible-Bold.woff2") format("woff2");
}
@font-face{
  font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;
  src:url("assets/fonts/IBMPlexMono-Regular.woff2") format("woff2");
}
@font-face{
  font-family:"IBM Plex Mono";font-style:normal;font-weight:600;font-display:swap;
  src:url("assets/fonts/IBMPlexMono-SemiBold.woff2") format("woff2");
}

:root{
  --ink:#101A21;
  --ink-soft:#43525B;
  --paper:#F3F5F3;
  --surface:#FFFFFF;
  --rule:#D2D9D4;
  --rule-strong:#A9B4AD;
  --duo-red:#B0242A;
  --duo-green:#00614A;
  --green-tint:#E4EEEA;
  --red-tint:#F6E7E7;
  --sans:"Atkinson Hyperlegible", Verdana, "Segoe UI", system-ui, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --wrap:1120px;
  --gutter:clamp(20px, 5vw, 64px);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:19px;line-height:1.65;letter-spacing:.005em;
}
img{max-width:100%;height:auto}

/* Fokus – nie entfernen, das ist die Tastaturbedienung */
a:focus-visible,button:focus-visible,input:focus-visible,
select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:3px solid var(--duo-green);outline-offset:3px;border-radius:2px;
}

.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--ink);color:#fff;padding:14px 20px;font-weight:700}
.skip:focus{left:0}

.duo{height:5px;border:0;margin:0;background:linear-gradient(90deg,var(--duo-red) 0 50%,var(--duo-green) 50% 100%)}

/* ---------- Kopf ---------- */
.site-head{position:sticky;top:0;z-index:50;background:rgba(243,245,243,.94);
  backdrop-filter:saturate(140%) blur(6px);border-bottom:1px solid var(--rule)}
.admin-bar .site-head{top:32px}
@media screen and (max-width:782px){.admin-bar .site-head{top:46px}}
.head-inner{max-width:var(--wrap);margin:0 auto;padding:14px var(--gutter);
  display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);margin-right:auto}
.brand svg{flex:none}
.brand-name{font-weight:700;font-size:18px;line-height:1.15;letter-spacing:-.01em}
.brand-sub{font-family:var(--mono);font-size:11px;color:var(--ink-soft);letter-spacing:.08em;text-transform:uppercase}

.nav ul{display:flex;flex-wrap:wrap;gap:2px;list-style:none;margin:0;padding:0}
.nav a{font-size:16px;text-decoration:none;color:var(--ink-soft);padding:9px 13px;border-radius:3px;display:block}
.nav a:hover{color:var(--ink);background:var(--green-tint)}
.nav .current-menu-item>a,.nav .current_page_item>a,.nav .current-menu-parent>a{
  color:var(--duo-green);font-weight:700;box-shadow:inset 0 -3px 0 var(--duo-green)}
.nav-toggle{display:none}

/* ---------- Raster ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.band{padding:clamp(48px,7vw,88px) 0;border-bottom:1px solid var(--rule)}
.band--tint{background:var(--surface)}

/* ---------- Sehzeile ---------- */
.hero{padding:clamp(52px,8vw,104px) 0 clamp(40px,6vw,72px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:clamp(20px,4vw,56px);align-items:end}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--duo-green);margin:0 0 28px}
.chart{border-top:1px solid var(--rule-strong)}
.chart-row{display:grid;grid-template-columns:64px 1fr;gap:clamp(12px,3vw,32px);
  align-items:baseline;padding:clamp(10px,1.6vw,18px) 0;border-bottom:1px solid var(--rule)}
.chart-val{font-family:var(--mono);font-size:12px;color:var(--rule-strong);letter-spacing:.06em;padding-top:.6em}
.chart-line{margin:0;font-weight:700;letter-spacing:-.025em;line-height:1.06}
.l1{font-size:clamp(38px,7.6vw,80px)}
.l2{font-size:clamp(24px,4.2vw,44px);letter-spacing:-.02em}
.l3{font-size:clamp(17px,2.1vw,23px);font-weight:400;line-height:1.45;letter-spacing:0;color:var(--ink-soft)}
.hero-lede{max-width:62ch;margin:34px 0 0;font-size:clamp(19px,2vw,21px)}
.portrait-frame{position:relative;isolation:isolate}
.portrait-frame::before{content:"";position:absolute;left:2%;right:2%;bottom:0;height:58%;
  background:var(--green-tint);border-radius:4px;z-index:-1}
.portrait-cut{display:block;width:100%}

/* ---------- Schaltflächen ---------- */
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.btn{display:inline-block;font:inherit;font-weight:700;font-size:17px;padding:15px 26px;
  border-radius:3px;text-decoration:none;cursor:pointer;border:2px solid transparent}
.btn-primary{background:var(--duo-green);color:#fff}
.btn-primary:hover{background:#004E3B;color:#fff}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:none}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-icon{display:inline-flex;align-items:center;gap:10px}
.btn-icon img{flex:none;width:22px;height:22px}

/* ---------- Typografie ---------- */
.sec-label{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-soft);margin:0 0 18px}
h1{font-size:clamp(32px,4.6vw,52px);line-height:1.1;letter-spacing:-.025em;margin:0 0 24px;font-weight:700}
h2{font-size:clamp(27px,3.6vw,40px);line-height:1.14;letter-spacing:-.02em;margin:0 0 20px;font-weight:700}
h3{font-size:clamp(20px,2.3vw,25px);line-height:1.22;letter-spacing:-.012em;margin:0 0 12px;font-weight:700}
h4{font-size:18px;margin:0 0 8px;font-weight:700}
p{margin:0 0 18px;max-width:68ch}
.lede{font-size:clamp(19px,2vw,22px);max-width:62ch}
.muted{color:var(--ink-soft)}
a{color:var(--duo-green)}
blockquote{margin:0 0 20px;padding:18px 22px;background:var(--green-tint);border-radius:4px}

/* Landoltring als Anstrich – Geometrie liegt in assets/landolt.svg */
ul.plain{list-style:none;padding:0;margin:0 0 18px}
ul.plain li{position:relative;padding-left:32px;margin-bottom:12px;max-width:66ch}
ul.plain li::before{content:"";position:absolute;left:0;top:.34em;width:15px;height:15px;
  background:url("assets/landolt.svg") no-repeat center/contain}

/* ---------- Karten ---------- */
.grid-3{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-2{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:var(--surface);border:1px solid var(--rule);border-radius:4px;padding:28px;
  display:flex;flex-direction:column}
.card p{margin-bottom:14px}
.card .card-foot{margin-top:auto;padding-top:10px}
.card-num{font-family:var(--mono);font-size:12px;color:var(--duo-green);letter-spacing:.1em;margin-bottom:14px}
.card h3 a{text-decoration:none}
.card h3 a:hover{text-decoration:underline;text-underline-offset:4px}
.linkish{background:none;border:0;padding:0;font:inherit;font-weight:700;color:var(--duo-green);
  cursor:pointer;text-decoration:underline;text-underline-offset:4px}
.meta{font-family:var(--mono);font-size:13px;color:var(--ink-soft);letter-spacing:.02em}

/* ---------- Termine ---------- */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;list-style:none;padding:0}
.chip{font-family:var(--mono);font-size:13px;padding:8px 14px;border:1px solid var(--rule-strong);
  background:var(--surface);border-radius:999px;color:var(--ink-soft);text-decoration:none;display:inline-block}
.chip[aria-current="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.talk{display:grid;grid-template-columns:150px 1fr;gap:clamp(14px,3vw,32px);
  padding:22px 0;border-bottom:1px solid var(--rule);align-items:start}
.talk-date{font-family:var(--mono);font-size:14px;line-height:1.5}
.talk-title{font-weight:700;font-size:19px;margin:0 0 6px;line-height:1.35}
.talk-where{margin:0;font-size:17px;color:var(--ink-soft)}
.tag{display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.09em;
  text-transform:uppercase;padding:3px 9px;border-radius:3px;margin-top:8px}
.tag-next{background:var(--red-tint);color:var(--duo-red);font-weight:600}
.tag-online{background:var(--green-tint);color:var(--duo-green)}
.tag-demo{background:#EEE9DC;color:#6B5A2E}

/* ---------- Publikationen ---------- */
.pub{padding:20px 0;border-bottom:1px solid var(--rule)}
.pub-year{font-family:var(--mono);font-size:13px;color:var(--duo-green);letter-spacing:.08em;margin:0}
.pub-title{font-weight:700;margin:5px 0 4px;line-height:1.35;max-width:70ch}
.pub-src{margin:0;font-size:16px;color:var(--ink-soft);font-style:italic}

/* ---------- Aufklappbares ---------- */
details.fold{border:1px solid var(--rule);border-radius:4px;background:var(--surface);margin-top:26px}
details.fold summary{cursor:pointer;padding:18px 22px;font-weight:700;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px}
details.fold summary::-webkit-details-marker{display:none}
details.fold summary::after{content:"+";font-family:var(--mono);font-size:22px;color:var(--duo-green)}
details.fold[open] summary::after{content:"–"}
details.fold .fold-body{padding:0 22px 22px}

/* ---------- Bilder ---------- */
figure{margin:0}
figure.shot img{display:block;width:100%;border-radius:4px}
figcaption{font-family:var(--mono);font-size:12px;color:var(--ink-soft);margin-top:10px;letter-spacing:.03em}
.photo-full{border-bottom:1px solid var(--rule)}
.photo-full img{display:block;width:100%;height:clamp(260px,34vw,420px);object-fit:cover;object-position:56% 18%}
.press{background:var(--green-tint);border-radius:4px;padding:30px;border:1px solid #C6DAD2}

/* ---------- Formular ---------- */
/* Zwei feste Spalten statt auto-fit: sonst springt das Raster je nach Breite
   zwischen zwei und drei Spalten, und die Felder stehen versetzt.
   align-items:end richtet die Eingabefelder an der Zeilenunterkante aus, damit
   ein zweizeiliges Label daneben nichts verschiebt. */
.form-grid{display:grid;gap:20px 26px;grid-template-columns:repeat(2,minmax(0,1fr));
  align-items:end;max-width:820px}
.field{display:flex;flex-direction:column;gap:7px;min-width:0}
.field input,.field select,.field textarea{width:100%}
.field.full{grid-column:1/-1}
label{font-weight:700;font-size:16px}
input,select,textarea{font:inherit;font-size:17px;padding:13px 14px;border:2px solid var(--rule-strong);
  border-radius:3px;background:var(--surface);color:var(--ink)}
.hint{font-size:15px;color:var(--ink-soft);font-weight:400}
/* .field setzt flex-direction:column – für die Zustimmungszeile muss das
   ausdrücklich zurückgesetzt werden, sonst steht das Kästchen über dem Text. */
.check{display:flex;flex-direction:row;gap:12px;align-items:flex-start;max-width:70ch}
.check label{cursor:pointer}
.check input{width:22px;height:22px;flex:none;margin-top:3px}
.hp{position:absolute;left:-9999px}
.hinweis{padding:16px 20px;border-radius:4px;margin-bottom:24px}
.hinweis-ok{background:var(--green-tint);border:1px solid #C6DAD2}
.hinweis-fehler{background:var(--red-tint);border:1px solid #E4BFC0}

/* ---------- Fuß ---------- */
.site-foot{background:var(--ink);color:#C9D4CD;padding:56px 0 30px}
.site-foot a{color:#fff}
.foot-grid{display:grid;gap:32px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.foot-grid h4{color:#fff}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin-bottom:6px}
.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid #2C3B44;
  font-family:var(--mono);font-size:12px;color:#93A5AC}

/* ---------- WordPress-Grundlagen ---------- */
.alignleft{float:left;margin:0 24px 18px 0}
.alignright{float:right;margin:0 0 18px 24px}
.aligncenter{display:block;margin:0 auto 18px}
.wp-caption-text,.screen-reader-text{font-size:14px;color:var(--ink-soft)}
.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

@media (max-width:820px){
  .hero-grid{grid-template-columns:1fr}
  .portrait-frame{max-width:400px;margin-top:8px}
}
@media (max-width:640px){
  body{font-size:18px}
  .form-grid{grid-template-columns:1fr}
  .chart-row{grid-template-columns:44px 1fr}
  .talk{grid-template-columns:1fr;gap:6px}
  .head-inner{gap:12px}
  .nav ul{gap:0}
  .nav a{padding:8px 10px;font-size:15px}
}