/* ==========================================================================
   TNS Unternehmensgruppe – gemeinsames Designsystem
   Gilt für tnsystems.net und tns-tiefbau.de
   ========================================================================== */

@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/source-sans-3-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/source-sans-3-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/source-sans-3-latin-ext-600-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/source-sans-3-latin-600-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/source-sans-3-latin-ext-700-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Source Sans 3";font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/source-sans-3-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* ---------- Tokens ---------- */
:root{
  --blue:#2F3391;          /* Logo-Blau */
  --blue-deep:#1F2266;
  --blue-ink:#16193f;
  --blue-soft:#E9EAF6;
  --grey:#929797;          /* Logo-Grau */
  --grey-light:#E4E6E6;
  --grey-bg:#F4F5F5;
  --ink:#1c1d24;
  --ink-2:#4a4c58;
  --white:#fff;
  --accent:#2F3391;        /* wird pro Site überschrieben */
  --accent-ink:#fff;
  --radius:6px;
  --shadow:0 10px 30px rgba(22,25,63,.10);
  --maxw:1180px;
  --font:"Source Sans 3",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
.site-systems{--accent:#2F3391;--accent-2:#4A8FE7;}
.site-tiefbau{--accent:#E27D1B;--accent-ink:#fff;--accent-2:#F0A34D;}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:18px;line-height:1.55;color:var(--ink);background:var(--white)}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.12;margin:0 0 .5em;color:var(--blue-ink);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,4.5vw,3.4rem)}
h2{font-size:clamp(1.65rem,3vw,2.3rem)}
h3{font-size:1.3rem}
p{margin:0 0 1em}
ul{padding-left:1.2em}
.lead{font-size:1.2rem;color:var(--ink-2)}
.eyebrow{display:inline-block;font-size:.85rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:.8rem}
.site-systems .eyebrow{color:var(--blue)}
.muted{color:var(--ink-2)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(18px,4vw,40px)}
.section{padding:clamp(56px,8vw,104px) 0}
.section--tight{padding:clamp(40px,5vw,64px) 0}
.section--grey{background:var(--grey-bg)}
.section--blue{background:var(--blue-ink);color:#e9eaf6}
.section--blue h2,.section--blue h3{color:#fff}
.section--blue a{color:#fff}
.center{text-align:center}
.grid{display:grid;gap:clamp(18px,2.5vw,32px)}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr))}
.grid-2x{grid-template-columns:repeat(auto-fit,minmax(min(100%,440px),1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr))}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 12px;z-index:1000}
.skip:focus{left:8px;top:8px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5em;padding:.8em 1.4em;border-radius:var(--radius);font-weight:700;border:2px solid transparent;cursor:pointer;transition:transform .15s,background .15s,color .15s;text-decoration:none!important;line-height:1.2}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn--primary:hover{filter:brightness(1.08)}
.btn--ghost{border-color:currentColor;color:var(--blue-ink);background:transparent}
.section--blue .btn--ghost,.hero .btn--ghost{color:#fff}
.btn--white,.section--blue .btn--white,.hero .btn--white{background:#fff;color:var(--blue-ink)}
.btn svg{width:1.1em;height:1.1em}

/* ---------- Gruppen-Leiste ---------- */
.groupbar{background:var(--blue-ink);color:#c9cbe6;font-size:.86rem}
.groupbar .wrap{display:flex;justify-content:space-between;align-items:center;min-height:36px;gap:16px}
.groupbar a{color:#fff;font-weight:600}
.groupbar .brands{display:flex;gap:18px;align-items:center}
.groupbar .brands a{opacity:.7}
.groupbar .brands a[aria-current]{opacity:1;border-bottom:2px solid var(--accent-2);padding-bottom:1px}
.groupbar .contactline{display:flex;gap:18px}
@media(max-width:700px){.groupbar .contactline{display:none}}

/* ---------- Header / Navigation ---------- */
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--grey-light)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:84px;gap:24px}
.brand img,.brand svg{height:52px;width:auto}
.nav{display:flex;align-items:center;gap:6px}
.nav>ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.nav a{display:block;padding:10px 14px;font-weight:600;color:var(--ink);border-radius:var(--radius)}
.nav a:hover{background:var(--grey-bg);text-decoration:none}
.nav a[aria-current="page"]{color:var(--blue)}
.nav a.btn{color:var(--accent-ink);padding:.8em 1.4em}
.nav a.btn:hover{background:var(--accent)}
.nav .has-sub{position:relative}
.nav .has-sub>a::after{content:"";display:inline-block;width:.45em;height:.45em;border:solid currentColor;border-width:0 2px 2px 0;transform:rotate(45deg);margin-left:.5em;position:relative;top:-.15em}
.nav .sub{position:absolute;top:100%;left:0;min-width:270px;background:#fff;border:1px solid var(--grey-light);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px;list-style:none;margin:0;display:none}
.nav .has-sub:hover .sub,.nav .has-sub:focus-within .sub{display:block}
.nav .sub a{padding:9px 12px;font-weight:600}
.nav .cta{margin-left:10px}
.navtoggle{display:none;background:none;border:0;padding:8px;cursor:pointer}
.navtoggle span{display:block;width:26px;height:3px;background:var(--blue-ink);margin:5px 0;border-radius:2px;transition:.2s}
@media(max-width:960px){
  .navtoggle{display:block}
  .nav{position:fixed;inset:0;top:0;background:#fff;flex-direction:column;align-items:stretch;padding:96px 24px 32px;display:none;overflow:auto;z-index:40}
  .nav.open{display:flex}
  .nav>ul{flex-direction:column;gap:0}
  .nav a{padding:14px 8px;font-size:1.15rem;border-bottom:1px solid var(--grey-light);border-radius:0}
  .nav .has-sub>a::after{display:none}
  .nav .sub{display:block;position:static;border:0;box-shadow:none;padding:0 0 0 16px}
  .nav .sub a{font-size:1rem;font-weight:400}
  .nav .cta{margin:20px 0 0}
  body.nav-open{overflow:hidden}
  .navtoggle{position:relative;z-index:60}
  body.nav-open .navtoggle span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  body.nav-open .navtoggle span:nth-child(2){opacity:0}
  body.nav-open .navtoggle span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--blue-ink);color:#fff;overflow:hidden;isolation:isolate}
.hero .wrap{position:relative;z-index:2;padding-top:clamp(64px,9vw,128px);padding-bottom:clamp(64px,9vw,128px);max-width:var(--maxw)}
.hero h1{color:#fff;max-width:18ch}
.hero .lead{color:#d6d8ee;max-width:56ch;font-size:clamp(1.1rem,1.6vw,1.35rem)}
.hero .eyebrow{color:var(--accent-2)}
.hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:2rem}
.hero-art{position:absolute;inset:0;z-index:1;pointer-events:none}
.hero-art svg{width:100%;height:100%}
.hero-art::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(22,25,63,.92) 0,rgba(22,25,63,.75) 45%,rgba(22,25,63,.15) 100%)}
.hero--sub .wrap{padding-top:clamp(48px,6vw,80px);padding-bottom:clamp(48px,6vw,80px)}
.hero--sub h1{font-size:clamp(1.9rem,3.6vw,2.8rem)}
.hero .facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:clamp(20px,4vw,48px);margin-top:3rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.18)}
.hero .facts b{display:block;font-size:2rem;line-height:1;color:#fff}
.hero .facts span{font-size:.95rem;color:#c9cbe6}

/* ---------- Cards ---------- */
.card{background:#fff;border:1px solid var(--grey-light);border-radius:var(--radius);padding:clamp(22px,2.5vw,32px);display:flex;flex-direction:column;gap:10px;transition:box-shadow .2s,transform .2s;position:relative}
a.card{color:inherit}
a.card:hover{text-decoration:none;box-shadow:var(--shadow);transform:translateY(-3px)}
.card h3{margin:0}
.card p{margin:0;color:var(--ink-2)}
.card .icon{width:48px;height:48px;border-radius:12px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;margin-bottom:6px}
.site-tiefbau .card .icon{background:#FBEEDF;color:var(--accent)}
.card .icon svg{width:26px;height:26px}
.card .more{margin-top:auto;padding-top:8px;font-weight:700;color:var(--blue)}
.card .more::after{content:" →"}
.card--dark{background:var(--blue-deep);border-color:transparent;color:#e9eaf6}
.card--dark h3{color:#fff}.card--dark p{color:#c9cbe6}.card--dark a{color:#fff}

/* ---------- Feature / Split ---------- */
.split{display:grid;gap:clamp(28px,5vw,72px);align-items:center;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}
.split .visual{border-radius:var(--radius);overflow:hidden;background:var(--grey-bg);border:1px solid var(--grey-light)}
.split .visual svg,.split .visual img{width:100%;height:auto}
.checklist{list-style:none;padding:0;margin:0 0 1.2rem;display:grid;gap:10px}
.checklist li{position:relative;padding-left:34px}
.checklist li::before{content:"";position:absolute;left:0;top:.2em;width:22px;height:22px;border-radius:50%;background:var(--blue-soft)}
.checklist li::after{content:"";position:absolute;left:8px;top:.42em;width:5px;height:10px;border:solid var(--blue);border-width:0 2.5px 2.5px 0;transform:rotate(45deg)}
.site-tiefbau .checklist li::before{background:#FBEEDF}
.site-tiefbau .checklist li::after{border-color:var(--accent)}
.section--blue .checklist li::before{background:rgba(255,255,255,.15)}
.section--blue .checklist li::after{border-color:#fff}

/* ---------- Steps ---------- */
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:22px}
.steps li{counter-increment:s;display:grid;grid-template-columns:52px 1fr;gap:16px;align-items:start}
.steps li::before{content:counter(s,decimal-leading-zero);font-weight:700;font-size:1.4rem;color:var(--accent);border-top:3px solid var(--accent);padding-top:6px}
.site-systems .steps li::before{color:var(--blue);border-color:var(--blue)}
.steps b{display:block;font-size:1.1rem;color:var(--blue-ink)}

/* ---------- Stripe / Facts ---------- */
.stripe{background:var(--blue);color:#fff}
.stripe .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:24px;padding-top:40px;padding-bottom:40px}
.stripe b{display:block;font-size:2.2rem;line-height:1}
.stripe span{color:#d6d8ee}

/* ---------- Group teaser ---------- */
.group{border:1px solid var(--grey-light);border-radius:var(--radius);padding:clamp(24px,3vw,40px);display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:32px;align-items:center;background:#fff}
.group .logo img,.group .logo svg{height:64px;width:auto;margin-bottom:14px}
.group p{color:var(--ink-2)}

/* ---------- Kontakt ---------- */
.contactbox{background:#fff;border:1px solid var(--grey-light);border-radius:var(--radius);padding:clamp(22px,3vw,36px)}
.contactbox dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:10px 18px}
.contactbox dt{font-weight:700;color:var(--ink-2)}
.contactbox dd{margin:0}
.contactbox a{font-weight:600}
.bigcontact{font-size:1.4rem;font-weight:700}

/* ---------- Placeholder-Bilder (bis echte Fotos da sind) ---------- */
.ph{position:relative;background:linear-gradient(135deg,var(--blue-deep),var(--blue));border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;display:grid;place-items:center;color:#fff}
.ph svg{width:100%;height:100%}
.ph--wide{aspect-ratio:16/7}

/* ---------- Footer ---------- */
.footer{background:var(--blue-ink);color:#c9cbe6;font-size:.95rem}
.footer .wrap{padding-top:56px;padding-bottom:28px}
.footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:32px;margin-bottom:40px}
.footer h4{color:#fff;font-size:1rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}
.footer a{color:#fff}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.footer .logo img,.footer .logo svg{height:46px;width:auto;margin-bottom:14px}
.footer .legal{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:.88rem}
.footer .legal ul{display:flex;gap:18px}

/* ---------- Text pages ---------- */
.prose{max-width:760px}
.prose h2{margin-top:2.2rem;font-size:1.5rem}
.prose h3{margin-top:1.6rem}
.prose table{border-collapse:collapse;width:100%;margin:1rem 0}
.prose td,.prose th{border:1px solid var(--grey-light);padding:8px 10px;text-align:left;vertical-align:top}
.note{background:#FFF6E5;border-left:4px solid #E27D1B;padding:12px 16px;border-radius:0 var(--radius) var(--radius) 0;margin:1rem 0;font-size:.95rem}

/* ---------- Job cards ---------- */
.job{border:1px solid var(--grey-light);border-radius:var(--radius);padding:24px;display:grid;gap:8px;background:#fff}
.job .tags{display:flex;flex-wrap:wrap;gap:8px;font-size:.85rem}
.job .tags span{background:var(--grey-bg);padding:3px 10px;border-radius:99px;color:var(--ink-2)}

/* ---------- Utilities ---------- */
.mt-2{margin-top:2rem}.mt-3{margin-top:3rem}.mb-0{margin-bottom:0}
.maxw-60{max-width:60ch}
@media print{.groupbar,.header,.footer .cols,.hero-art{display:none}.hero{background:#fff;color:#000}.hero h1{color:#000}}