/* =========================================================================
   Institut für Sicherheit und Verteidigung · Website, Stand 10/2026
   Ruhiges, institutionelles Erscheinungsbild: weißer Grund, klare Raster,
   dünne Linien, eine Akzentfarbe. Keine Animationen, keine 3D-Szenen.
   ========================================================================= */

:root{
  --ink:#141718; --text:#2B3234; --mid:#4D575A; --dim:#6E787B;
  --line:#D9DEDF; --line-soft:#E8ECED; --soft:#F3F5F5; --soft-2:#E9EDEE;
  --acc:#0F7A4C; --acc-deep:#0A5537; --acc-soft:#E7F3ED;
  --black:#000; --red:#DD0000; --gold:#FFCE00;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --mono:"IBM Plex Mono",Menlo,Consolas,monospace;
  --wrap:1180px; --gut:20px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:#fff;color:var(--text);font-family:var(--sans);font-size:17px;line-height:1.6;}
img{max-width:100%;height:auto;display:block}
a{color:var(--acc);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{color:var(--ink);font-weight:600;line-height:1.15;margin:0 0 .5em;letter-spacing:-.012em}
h1{font-size:clamp(2rem,4.2vw,3.1rem)}
h2{font-size:clamp(1.55rem,2.6vw,2.1rem)}
h3{font-size:1.15rem;line-height:1.3}
h4{font-size:1rem}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}
li{margin:0 0 .35em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.muted{color:var(--dim)}
.small{font-size:.92rem}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:.5rem 1rem;z-index:100}
.skip:focus{left:8px;top:8px}

/* ---------- Flaggenstreifen (Markenzeichen) ---------- */
.stripe{display:grid;grid-template-columns:1fr 1fr 1fr;height:6px;width:100%}
.stripe span:nth-child(1){background:var(--black)}
.stripe span:nth-child(2){background:var(--red)}
.stripe span:nth-child(3){background:var(--gold)}

/* ---------- Infozeile ---------- */
.topbar{background:var(--soft);border-bottom:1px solid var(--line-soft);font-size:.86rem;color:var(--mid)}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;min-height:38px;gap:16px;flex-wrap:wrap}
.topbar a{color:var(--ink)}
.topbar b{color:var(--ink);font-weight:600}
.topbar nav a{margin-left:18px}

/* ---------- Kopf mit Logo und Handlungsaufrufen ---------- */
.head .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-top:18px;padding-bottom:18px}
.brand{display:flex;align-items:stretch;gap:12px;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .flag{width:10px;flex:none;background:linear-gradient(to bottom,var(--black) 0 33.4%,var(--red) 33.4% 66.7%,var(--gold) 66.7% 100%)}
.brand .name{font-weight:600;font-size:1.3rem;line-height:1.12;letter-spacing:-.01em}
.brand .sub{display:block;font-weight:400;font-size:.8rem;color:var(--dim);margin-top:3px;letter-spacing:.01em}
.head .cta{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}

/* ---------- Schaltflächen ---------- */
.btn{display:inline-block;padding:.72rem 1.25rem;border:1.5px solid var(--acc);border-radius:2px;font-weight:600;font-size:.95rem;line-height:1.2;color:var(--acc);background:#fff;text-align:center;cursor:pointer}
.btn:hover{text-decoration:none;background:var(--acc-soft)}
.btn--fill{background:var(--acc);color:#fff}
.btn--fill:hover{background:var(--acc-deep);border-color:var(--acc-deep)}
.btn--dark{border-color:var(--ink);color:var(--ink)}
.btn--dark:hover{background:var(--ink);color:#fff}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* ---------- Hauptnavigation ---------- */
.mainnav{border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.mainnav .wrap{display:flex;align-items:center;justify-content:space-between}
.mainnav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:0 4px}
.mainnav li{margin:0}
.mainnav a{display:block;padding:15px 14px;color:var(--ink);font-weight:500;font-size:1rem;border-bottom:3px solid transparent;margin-bottom:-1px}
.mainnav a:hover{text-decoration:none;border-bottom-color:var(--line)}
.mainnav a[aria-current="page"]{border-bottom-color:var(--acc);font-weight:600}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:2px;padding:8px 10px;cursor:pointer;color:var(--ink);font:inherit;font-weight:600}

/* ---------- Bühne (Startseite) ---------- */
.hero{background:var(--soft);overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:stretch;padding-top:0;padding-bottom:0;position:relative}
.hero .text{padding:36px 0 48px}
.hero .stripe{width:min(100%,520px);margin-bottom:32px}
.hero h1{margin-bottom:.55em}
.hero .lead{font-size:1.15rem;line-height:1.55;color:var(--mid);max-width:34rem}
.hero .note{font-size:.9rem;color:var(--dim);margin-top:18px}
/* Das Bild läuft wie beim Vorbild bis an den rechten Bildschirmrand */
.hero .pic{min-height:420px;position:relative;margin-right:calc(-1 * max(var(--gut), (100vw - var(--wrap)) / 2 + var(--gut)))}
.hero .pic img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}

/* ---------- Seitenkopf (Unterseiten) ---------- */
.phead{background:var(--soft);padding:40px 0 44px;border-bottom:1px solid var(--line-soft)}
.phead .stripe{width:min(100%,420px);margin-bottom:26px}
.phead .lead{font-size:1.15rem;color:var(--mid);max-width:46rem;margin:0}
.crumbs{font-size:.86rem;color:var(--dim);margin-bottom:14px}
.crumbs a{color:var(--dim)}

/* ---------- Abschnitte ---------- */
.sec{padding:64px 0}
.sec--soft{background:var(--soft)}
.sec--tight{padding:44px 0}
.sec .intro{max-width:44rem;margin-bottom:34px}
.sec .intro p{color:var(--mid);font-size:1.08rem}
.label{display:block;font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--acc);margin-bottom:10px}

/* Raster mit dünnen Trennlinien (Leistungen, Schritte) */
.grid{display:grid;border-top:1px solid var(--line);}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid > div{padding:28px 28px 28px 0;border-bottom:1px solid var(--line);}
.grid > div + div{padding-left:28px;border-left:1px solid var(--line)}
.grid--3 > div:nth-child(3n+1){padding-left:0;border-left:0}
.grid--2 > div:nth-child(2n+1){padding-left:0;border-left:0}
.grid--4 > div:nth-child(4n+1){padding-left:0;border-left:0}
.grid h3{margin-bottom:.45em}
.grid p{color:var(--mid);font-size:.98rem;margin:0}
.grid ul{margin:0;padding-left:1.1em;color:var(--mid);font-size:.98rem}
.grid .num{display:block;font-size:2rem;font-weight:600;color:var(--acc);line-height:1;margin-bottom:12px;font-family:var(--mono)}

/* Zweispaltiger Text mit Bild */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .pic img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split .pic figcaption{font-size:.84rem;color:var(--dim);margin-top:8px}
.split ul{color:var(--mid)}

/* Kennzahlen / Fakten */
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.facts > div{padding:24px 24px 24px 0}
.facts > div + div{border-left:1px solid var(--line);padding-left:24px}
.facts .z{font-size:2rem;font-weight:600;color:var(--ink);line-height:1;letter-spacing:-.02em}
.facts .t{color:var(--mid);font-size:.92rem;margin-top:8px;line-height:1.4}

/* Leistungsblöcke (großflächig, wie auf der Vorbildseite) */
.block{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center;padding:52px 0;border-top:1px solid var(--line)}
.block:first-of-type{border-top:0}
.block.rev .pic{order:-1}
.block .pic img{width:100%;aspect-ratio:3/2;object-fit:cover}
.block ul{color:var(--mid);margin-bottom:1.4em}
.block .meta{font-size:.92rem;color:var(--dim)}

/* Sektoren */
.sectors{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.sectors > div{padding:22px 20px 22px 0;border-bottom:1px solid var(--line)}
.sectors > div + div{border-left:1px solid var(--line);padding-left:20px}
.sectors > div:nth-child(4n+1){border-left:0;padding-left:0}
.sectors b{display:block;color:var(--ink);margin-bottom:4px}
.sectors span{color:var(--mid);font-size:.95rem}

/* Hinweiskasten */
.note-box{border:1px solid var(--line);border-left:4px solid var(--acc);padding:20px 24px;background:#fff;margin:24px 0}
.note-box.warn{border-left-color:#9A5B00}
.note-box p:last-child{margin:0}

/* Tabellen */
table.plain{width:100%;border-collapse:collapse;font-size:.98rem}
table.plain th,table.plain td{text-align:left;vertical-align:top;padding:12px 16px 12px 0;border-bottom:1px solid var(--line)}
table.plain th{font-weight:600;color:var(--ink);width:32%}
table.plain td{color:var(--mid)}

/* Häufige Fragen */
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-of-type{border-top:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:18px 36px 18px 0;font-weight:600;color:var(--ink);position:relative;font-size:1.05rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:14px;font-size:1.5rem;color:var(--acc);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--mid);margin:0 0 18px;max-width:52rem}

/* Aktuelles */
.news__item{display:grid;grid-template-columns:200px 1fr;gap:32px;padding:32px 0;border-top:1px solid var(--line)}
.news__item:last-child{border-bottom:1px solid var(--line)}
.news__meta{color:var(--dim);font-size:.92rem}
.news__meta time{display:block;color:var(--ink);font-weight:600;margin-bottom:6px}
.news__tag{display:inline-block;font-size:.76rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--acc);margin-bottom:10px}
.news__body h2{font-size:1.35rem;margin-bottom:.5em}
.news__body p{color:var(--mid);max-width:52rem}
.news__body p:last-child{margin:0}
.grid h3 a{color:var(--ink)}
@media (max-width:720px){.news__item{grid-template-columns:1fr;gap:10px;padding:24px 0}}

/* Kontaktblock */
.contact{display:grid;grid-template-columns:1.1fr 1fr;gap:56px}
.contact .lines{display:grid;grid-template-columns:1fr 1fr;gap:20px 32px;border-top:1px solid var(--line);padding-top:22px}
.contact .lines b{display:block;color:var(--ink);font-size:.86rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:4px}
.contact .lines span{color:var(--mid)}
.contact .lines a{color:var(--ink);font-weight:500}

/* Formular */
.form{display:grid;gap:16px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{display:block;font-weight:600;font-size:.92rem;margin-bottom:6px;color:var(--ink)}
.field input,.field select,.field textarea{width:100%;padding:.7rem .8rem;border:1px solid var(--line);border-radius:2px;font:inherit;color:var(--ink);background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--acc);outline-offset:1px;border-color:var(--acc)}
.field textarea{min-height:140px;resize:vertical}
.req{color:#B3261E}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;color:var(--mid)}
.check input{margin-top:5px}
.hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.form__msg{font-size:.92rem}

/* Abschlussaufruf */
.cta-band{background:var(--ink);color:#fff;padding:56px 0}
.cta-band h2{color:#fff}
.cta-band p{color:#C9D1D3;max-width:40rem}
.cta-band .btn{border-color:#fff;color:#fff;background:transparent}
.cta-band .btn:hover{background:#fff;color:var(--ink)}
.cta-band .btn--fill{background:var(--acc);border-color:var(--acc)}
.cta-band .btn--fill:hover{background:var(--acc-deep);border-color:var(--acc-deep);color:#fff}

/* Textseiten (Impressum, Datenschutz) */
.prose{max-width:46rem}
.prose h2{font-size:1.35rem;margin-top:2em}
.prose h3{font-size:1.08rem;margin-top:1.6em}
.prose dl{display:grid;grid-template-columns:200px 1fr;gap:8px 20px;margin:0 0 1.5em}
.prose dt{font-weight:600;color:var(--ink)}
.prose dd{margin:0;color:var(--mid)}

/* ---------- Fuß ---------- */
.foot{border-top:1px solid var(--line);background:var(--soft);padding:48px 0 28px;font-size:.95rem;color:var(--mid)}
.foot .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.foot h4{font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);margin-bottom:12px}
.foot ul{list-style:none;padding:0;margin:0}
.foot li{margin:0 0 8px}
.foot a{color:var(--mid)}
.foot a:hover{color:var(--ink)}
.foot .brand .name{font-size:1.1rem}
.foot .bar{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.86rem;color:var(--dim)}

/* ---------- Anpassung an schmale Bildschirme ---------- */
@media (max-width:1000px){
  .hero .wrap,.split,.block,.contact{grid-template-columns:1fr;gap:32px}
  .block.rev .pic{order:0}
  .hero .pic{min-height:280px;margin-right:0}
  .facts,.sectors{grid-template-columns:1fr 1fr}
  .facts > div:nth-child(2n+1){border-left:0;padding-left:0}
  .sectors > div:nth-child(2n+1){border-left:0;padding-left:0}
  .sectors > div:nth-child(2n){border-left:1px solid var(--line);padding-left:20px}
  .grid--3,.grid--4{grid-template-columns:1fr 1fr}
  .grid--3 > div,.grid--4 > div{padding-left:28px;border-left:1px solid var(--line)}
  .grid--3 > div:nth-child(2n+1),.grid--4 > div:nth-child(2n+1){padding-left:0;border-left:0}
  .foot .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  body{font-size:16px}
  .topbar nav{display:none}
  .head .wrap{flex-direction:column;align-items:flex-start}
  .head .cta{justify-content:flex-start}
  .burger{display:inline-block}
  .mainnav .wrap{flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
  .mainnav ul{display:none;width:100%;flex-direction:column;padding-top:8px}
  .mainnav ul.is-open{display:flex}
  .mainnav a{padding:12px 0;border-bottom:1px solid var(--line-soft)}
  .mainnav a[aria-current="page"]{border-bottom-color:var(--acc)}
  .hero .text{padding:28px 0 36px}
  .sec{padding:44px 0}
  .grid--2,.grid--3,.grid--4,.facts,.sectors{grid-template-columns:1fr}
  .grid > div,.facts > div,.sectors > div{padding-left:0 !important;border-left:0 !important}
  .form .row{grid-template-columns:1fr}
  .contact .lines{grid-template-columns:1fr}
  .prose dl{grid-template-columns:1fr;gap:2px 0}
  .prose dd{margin-bottom:10px}
  .foot .cols{grid-template-columns:1fr}
  .block{padding:36px 0}
}