/* KBT Waterproofing — shared styles for /injektion/ landing pages
   Mirrors the main site's design system (Inter, teal/blue palette, card patterns)
   so the injection section feels native, not bolted-on. */

*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#E2E8F0;
  --card:#ffffff;
  --border:rgba(0,0,0,.08);
  --teal:#31c1e4;
  --blue:#046BD2;
  --green:#3e990a;
  --green-light:rgba(62,153,10,.1);
  --gold:#f2ca2c;
  --text:#3c3c3c;
  --muted:#666666;
  --white:#111111;
  --warn:#c0392b;
}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--teal);text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 24px}
button{border:none;cursor:pointer;font-family:inherit}

/* NAV — mirrors index.html */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.95);backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,.08);box-shadow:0 1px 4px rgba(0,0,0,.06)}
nav .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:44px;width:auto}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:#555;font-size:14px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--teal)}
.nav-links a.active{color:var(--green);font-weight:600}
.nav-cta{background:linear-gradient(135deg,var(--teal),var(--blue));color:#fff !important;padding:10px 24px;border-radius:10px;font-size:14px;font-weight:700;transition:transform .2s,box-shadow .2s}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 4px 20px rgba(0,175,215,.3)}
.nav-mobile{display:none;background:none;border:none;color:#333;font-size:24px;cursor:pointer}

/* HERO — green accent to mark injection section vs teal for membrane */
.hero{padding:160px 0 100px;text-align:center;position:relative;overflow:hidden;background:linear-gradient(135deg,#0f2027 0%,#203a43 50%,#2c5364 100%);min-height:70vh;display:flex;align-items:center}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse at center,rgba(62,153,10,.15),transparent 60%);pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero-badge{display:inline-block;background:rgba(62,153,10,.18);border:1px solid rgba(62,153,10,.45);border-radius:100px;padding:6px 20px;font-size:13px;font-weight:600;color:#a9d77e;margin-bottom:24px;backdrop-filter:blur(4px)}
.hero h1{font-size:clamp(34px,5vw,56px);font-weight:900;line-height:1.1;letter-spacing:-1.5px;color:#fff;margin-bottom:20px;text-shadow:0 2px 20px rgba(0,0,0,.3)}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,#a9d77e,#7edcf0);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{font-size:clamp(16px,2vw,19px);color:rgba(255,255,255,.85);max-width:680px;margin:0 auto 36px;line-height:1.7}
.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{background:linear-gradient(135deg,var(--green),#2e7a07);color:#fff;padding:16px 34px;border-radius:14px;font-size:16px;font-weight:700;transition:transform .2s,box-shadow .2s;display:inline-flex;align-items:center;gap:8px}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(62,153,10,.4);color:#fff}
.btn-secondary{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);color:#fff;padding:16px 34px;border-radius:14px;font-size:16px;font-weight:600;transition:all .2s;backdrop-filter:blur(4px)}
.btn-secondary:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.4);color:#fff}
.hero-stats{display:flex;gap:48px;justify-content:center;margin-top:48px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat .num{font-size:28px;font-weight:800;color:#fff}
.hero-stat .num span{background:linear-gradient(135deg,#a9d77e,#7edcf0);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-stat .label{font-size:12px;color:rgba(255,255,255,.7);font-weight:500;margin-top:4px;text-transform:uppercase;letter-spacing:1px}

/* SECTION HEADINGS */
.section-label{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:2px;color:var(--green);text-align:center;margin-bottom:12px}
.section-title{font-size:clamp(26px,3.8vw,40px);font-weight:800;color:var(--white);text-align:center;letter-spacing:-1px;margin-bottom:16px}
.section-sub{color:var(--muted);text-align:center;font-size:17px;max-width:640px;margin:0 auto 48px}

/* BACK LINK */
.back-link{display:inline-block;margin:100px 0 0;color:var(--blue);font-size:14px;font-weight:500}
.back-link:hover{color:var(--teal)}

/* INTRO / METHOD */
.intro{padding:70px 0 30px}
.intro-box{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:48px;max-width:880px;margin:0 auto;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.intro-box h2{font-size:24px;font-weight:800;color:var(--white);margin-bottom:16px}
.intro-box p{color:var(--muted);font-size:16px;line-height:1.75;margin-bottom:14px}
.intro-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-top:32px;padding-top:28px;border-top:1px solid var(--border)}
.intro-stat{text-align:center}
.intro-stat .n{font-size:24px;font-weight:800;color:var(--green);margin-bottom:4px}
.intro-stat .l{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;font-weight:600}

/* SEGMENTS */
.segments{padding:70px 0}
.seg-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.seg-card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:32px;transition:all .3s;box-shadow:0 1px 3px rgba(0,0,0,.04);display:flex;flex-direction:column}
.seg-card:hover{border-color:rgba(62,153,10,.3);box-shadow:0 8px 30px rgba(62,153,10,.08);transform:translateY(-3px)}
.seg-tag{display:inline-block;padding:4px 12px;border-radius:100px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;margin-bottom:14px;background:var(--green-light);color:var(--green);align-self:flex-start}
.seg-card h3{font-size:19px;font-weight:800;color:var(--white);margin-bottom:10px}
.seg-card p{color:var(--muted);font-size:14px;line-height:1.65;margin-bottom:18px;flex-grow:1}
.seg-card .seg-link{color:var(--green);font-size:14px;font-weight:600;margin-top:auto}
.seg-card .seg-link:hover{color:var(--blue)}

/* FEATURES */
.features{padding:70px 0}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.feat-card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:28px;transition:all .3s;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.feat-card:hover{border-color:rgba(62,153,10,.25);box-shadow:0 4px 20px rgba(62,153,10,.08)}
.feat-card .feat-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px;background:var(--green-light)}
.feat-card h3{font-size:16px;font-weight:700;color:var(--white);margin-bottom:8px}
.feat-card p{color:var(--muted);font-size:14px;line-height:1.6}

/* PROCESS */
.process{padding:70px 0;background:linear-gradient(180deg,transparent,rgba(62,153,10,.04))}
.process-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px;margin-top:40px}
.step{text-align:center;position:relative}
.step-num{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--green),#2e7a07);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:#fff;margin:0 auto 14px;box-shadow:0 4px 12px rgba(62,153,10,.25)}
.step h3{font-size:15px;font-weight:700;color:var(--white);margin-bottom:6px}
.step p{color:var(--muted);font-size:13px;line-height:1.55}

/* FAQ */
.faq{padding:70px 0}
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px 24px;transition:border-color .2s}
.faq-item:hover{border-color:rgba(62,153,10,.2)}
.faq-item summary{font-size:15px;font-weight:700;color:var(--white);cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-size:22px;color:var(--green);font-weight:400;transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{margin-bottom:12px}
.faq-item p{color:var(--muted);font-size:14px;line-height:1.7}

/* CASE STUDIES */
.cases{padding:70px 0}
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.case-card{background:var(--card);border:1px solid var(--border);border-radius:22px;overflow:hidden;transition:all .3s;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.case-card:hover{border-color:rgba(62,153,10,.25);box-shadow:0 4px 20px rgba(62,153,10,.08)}
.case-placeholder{height:180px;background:linear-gradient(135deg,#203a43,#2c5364);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.4);font-size:13px;letter-spacing:1px;text-transform:uppercase}
.case-content{padding:26px}
.case-tag{font-size:11px;font-weight:700;color:var(--green);text-transform:uppercase;letter-spacing:1px;margin-bottom:6px}
.case-card h3{font-size:17px;font-weight:700;color:var(--white);margin-bottom:8px}
.case-card p{color:var(--muted);font-size:14px;line-height:1.6}

/* CONTACT */
.contact{padding:70px 0 90px}
.contact-box{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:48px;max-width:720px;margin:0 auto;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.contact-box h2{font-size:26px;font-weight:800;color:var(--white);margin-bottom:10px;text-align:center}
.contact-box p.intro{color:var(--muted);text-align:center;font-size:15px;margin-bottom:28px}
.contact-form{display:grid;gap:18px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-group label{font-size:13px;font-weight:600;color:var(--white);display:block;margin-bottom:6px}
.form-group input,.form-group select,.form-group textarea{width:100%;background:#fff;border:1px solid rgba(0,0,0,.12);border-radius:10px;padding:11px 14px;font-family:inherit;color:var(--text);font-size:14px;transition:border-color .2s}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(62,153,10,.12)}
.form-group textarea{resize:vertical;min-height:110px}
.form-submit{background:linear-gradient(135deg,var(--green),#2e7a07);color:#fff;padding:15px 32px;border-radius:14px;font-size:15px;font-weight:700;margin-top:4px;transition:transform .2s,box-shadow .2s;width:100%}
.form-submit:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(62,153,10,.35)}
.contact-alt{text-align:center;margin-top:20px;color:var(--muted);font-size:13px}
.contact-alt a{color:var(--blue);font-weight:600}

/* FOOTER */
footer{background:#0f2027;color:#fff;padding:48px 0 28px}
footer .container{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px}
footer h4{font-size:15px;font-weight:700;margin-bottom:14px;color:#fff}
footer p,footer a{color:rgba(255,255,255,.7);font-size:13px;line-height:1.7}
footer a:hover{color:var(--teal)}
footer ul{list-style:none;padding:0}
footer li{margin-bottom:6px}
.footer-bottom{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.1);padding-top:22px;margin-top:14px;text-align:center;font-size:12px;color:rgba(255,255,255,.5)}

/* INSET NOTE (for devil's advocate / transparency) */
.note{background:rgba(4,107,210,.06);border-left:3px solid var(--blue);padding:18px 24px;border-radius:8px;margin:18px 0;font-size:14px;color:var(--text);line-height:1.7}
.note strong{color:var(--blue)}

/* PHOTO GALLERY */
.gallery{padding:20px 0 70px}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery-item{background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden;transition:all .3s;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.gallery-item:hover{border-color:rgba(62,153,10,.25);box-shadow:0 4px 20px rgba(62,153,10,.08);transform:translateY(-2px)}
.gallery-item img{width:100%;height:220px;object-fit:cover;display:block}
.gallery-item .caption{padding:12px 16px;font-size:13px;color:var(--muted);font-weight:500}
.gallery-item .caption strong{color:var(--white);font-weight:700}

/* RESPONSIVE */
@media (max-width:768px){
  .nav-links{display:none}
  .hero{padding:130px 0 80px;min-height:60vh}
  .form-row{grid-template-columns:1fr}
  .intro-box,.contact-box{padding:28px}
  .gallery-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .gallery-item img{height:160px}
}