/* ==========================================================================
   Industries.club — Design System
   Palette: Navy #14202B / Slate #1E2F3F / Teal #0D9488 / Amber #F2A900
   Display: Space Grotesk · Body: Inter
   ========================================================================== */

:root{
  --navy:#14202B;
  --navy-2:#1E2F3F;
  --teal:#0D9488;
  --teal-light:#2DD4BF;
  --amber:#F2A900;
  --blue:#1565C0;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --text:#1F2933;
  --muted:#5B6B79;
  --line:#E3E8EC;
  --radius:14px;
  --max:1180px;
  --shadow: 0 10px 30px rgba(20,32,43,.08);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;}
.container{max-width:var(--max);margin:0 auto;padding:0 24px;}

h1,h2,h3,h4{
  font-family:'Space Grotesk',sans-serif;
  line-height:1.15;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}
h1{font-size:clamp(2.4rem,5vw,3.6rem);font-weight:700;}
h2{font-size:clamp(1.8rem,3.4vw,2.5rem);font-weight:700;}
h3{font-size:1.3rem;font-weight:600;}
p{margin:0 0 1em;color:var(--muted);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'Space Grotesk',sans-serif;
  font-size:.78rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--teal);margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:22px;height:2px;background:var(--amber);display:inline-block;
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;
  font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:.95rem;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
}
.btn-primary{background:var(--teal);color:#fff;}
.btn-primary:hover{background:#0b7d72;transform:translateY(-2px);box-shadow:0 8px 18px rgba(13,148,136,.35);}
.btn-amber{background:var(--amber);color:var(--navy);}
.btn-amber:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(242,169,0,.35);}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.35);}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff;}
.btn-outline-dark{background:transparent;color:var(--navy);border-color:var(--line);}
.btn-outline-dark:hover{border-color:var(--navy);}

/* ===================== HEADER ===================== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#FFFFFF;
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(20,32,43,.04);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px;}
.logo{
  display:flex;align-items:center;gap:10px;
  font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.25rem;text-decoration:none;
}
.site-header .logo{color:var(--blue);}
.logo-img{height:44px;width:auto;display:block;}
.logo .mark{
  width:36px;height:36px;border-radius:9px;
  background:linear-gradient(135deg,var(--teal),var(--teal-light));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:1.1rem;
}
.logo .dotclub{color:var(--amber);}
.site-header .logo .dotclub{color:var(--blue);}

.nav-links{display:flex;align-items:center;gap:30px;list-style:none;margin:0;padding:0;}
.nav-links a{
  color:rgba(20,32,43,.72);text-decoration:none;font-size:.95rem;font-weight:500;
  transition:color .15s ease;position:relative;
}
.nav-links a:hover, .nav-links a.active{color:var(--blue);}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-26px;height:3px;background:var(--amber);
}
.nav-cta{display:flex;align-items:center;gap:14px;}
.nav-cta a.login-link{color:rgba(20,32,43,.75);text-decoration:none;font-size:.92rem;font-weight:500;}
.nav-cta a.login-link:hover{color:var(--blue);}

.nav-toggle{display:none;background:none;border:0;color:var(--navy);font-size:1.6rem;cursor:pointer;}

@media(max-width:980px){
  .nav-links{
    position:fixed;top:78px;left:0;right:0;bottom:0;
    background:var(--navy);flex-direction:column;justify-content:flex-start;
    padding:36px 24px;gap:24px;
    transform:translateX(100%);transition:transform .25s ease;
  }
  .nav-links a{color:rgba(255,255,255,.82);}
  .nav-links a:hover, .nav-links a.active{color:#fff;}
  .nav-links.open{transform:translateX(0);}
  .nav-links a.active::after{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:block;}
}

/* ===================== HERO ===================== */
.hero{
  position:relative;overflow:hidden;
  background:var(--navy);
  color:#fff;
  padding:90px 0 110px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(45,212,191,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45,212,191,.07) 1px, transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(ellipse 80% 60% at 70% 40%, #000 40%, transparent 90%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;
}
@media(max-width:920px){.hero-grid{grid-template-columns:1fr;}}
.hero h1{margin-bottom:22px;}
.hero h1 .accent{color:var(--amber);}
.hero p.lead{font-size:1.15rem;color:rgba(255,255,255,.78);max-width:560px;}
.hero-actions{display:flex;gap:16px;margin-top:30px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:34px;margin-top:50px;flex-wrap:wrap;}
.hero-stats .stat-num{font-family:'Space Grotesk',sans-serif;font-size:2rem;font-weight:700;color:#fff;}
.hero-stats .stat-label{font-size:.82rem;color:rgba(255,255,255,.6);letter-spacing:.04em;}

/* Network diagram (signature visual) */
.network{position:relative;width:100%;aspect-ratio:1/1;max-width:480px;margin:0 auto;}
.network svg{width:100%;height:100%;}
.node-pulse{animation:pulse 2.6s ease-in-out infinite;}
.node-pulse.d1{animation-delay:.3s;}
.node-pulse.d2{animation-delay:.9s;}
.node-pulse.d3{animation-delay:1.5s;}
.line-flow{stroke-dasharray:6 8;animation:dash 3s linear infinite;}
@keyframes pulse{
  0%,100%{opacity:.55;r:5;}
  50%{opacity:1;r:8;}
}
@keyframes dash{to{stroke-dashoffset:-140;}}
@media (prefers-reduced-motion:reduce){
  .node-pulse,.line-flow{animation:none;}
}

/* ===================== SECTIONS ===================== */
section{padding:90px 0;}
.section-alt{background:#fff;}
.section-navy{background:var(--navy);color:#fff;}
.section-navy .eyebrow{color:var(--teal-light);}
.section-navy h2{color:#fff;}
.section-navy p{color:rgba(255,255,255,.7);}
.section-head{max-width:680px;margin:0 0 50px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* Cards */
.grid{display:grid;gap:28px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media(max-width:980px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media(max-width:620px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;transition:transform .2s ease, box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.card .icon{
  width:54px;height:54px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(13,148,136,.1);color:var(--teal);font-size:1.5rem;margin-bottom:18px;
}
.card.dark{background:var(--navy-2);border-color:rgba(255,255,255,.06);}
.card.dark h3{color:var(--amber);}
.card.dark p{color:rgba(255,255,255,.68);}
.card.dark .icon{background:rgba(242,169,0,.12);color:var(--amber);}

/* Problem table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff;}
table{width:100%;border-collapse:collapse;min-width:480px;}
th,td{text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);}
th{background:var(--navy);color:#fff;font-family:'Space Grotesk',sans-serif;font-weight:600;}
tbody tr:nth-child(even){background:var(--bg);}
td.impact{color:var(--teal);font-weight:600;}
tbody tr:last-child td{border-bottom:none;}

/* Comparison table */
.compare th.us{background:var(--teal);}
.compare th.them{background:#94A3B8;}
.compare td.us{color:var(--teal);font-weight:700;text-align:center;}
.compare td.them{color:var(--muted);text-align:center;}
.compare td:first-child{font-weight:600;}

/* Steps */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
@media(max-width:980px){.steps{grid-template-columns:repeat(2,1fr);}}
@media(max-width:620px){.steps{grid-template-columns:1fr;}}
.step{position:relative;padding-top:46px;}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:.9rem;color:var(--amber);
  position:absolute;top:0;left:0;letter-spacing:.1em;
}
.step h3{margin-bottom:8px;}

/* CTA band */
.cta-band{
  background:linear-gradient(120deg,var(--navy) 0%,var(--navy-2) 100%);
  color:#fff;border-radius:24px;padding:60px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band h2{margin-bottom:6px;color:#fff;}
.cta-band p{color:rgba(255,255,255,.7);margin:0;}

/* Forms */
.form-card{
  background:#fff;border-radius:var(--radius);border:1px solid var(--line);
  padding:40px;box-shadow:var(--shadow);
}
label{display:block;font-weight:600;font-size:.88rem;margin-bottom:6px;font-family:'Space Grotesk',sans-serif;}
input,select,textarea{
  width:100%;padding:13px 16px;border-radius:9px;border:1px solid var(--line);
  font-family:'Inter',sans-serif;font-size:.95rem;margin-bottom:18px;background:#fcfdfd;
  transition:border-color .15s ease, box-shadow .15s ease;
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(13,148,136,.15);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;}
@media(max-width:620px){.form-row{grid-template-columns:1fr;}}
.form-msg{padding:14px 18px;border-radius:10px;margin-bottom:20px;font-size:.92rem;font-weight:500;}
.form-msg.success{background:rgba(13,148,136,.1);color:#0b7d72;border:1px solid rgba(13,148,136,.25);}
.form-msg.error{background:rgba(220,38,38,.08);color:#b91c1c;border:1px solid rgba(220,38,38,.2);}

/* Footer */
.site-footer{background:var(--navy);color:rgba(255,255,255,.65);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;margin-bottom:48px;}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.site-footer h4{color:#fff;font-size:.9rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:18px;}
.site-footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.site-footer a{color:rgba(255,255,255,.65);text-decoration:none;font-size:.92rem;}
.site-footer a:hover{color:var(--amber);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.82rem;
}
.social-row{display:flex;gap:12px;margin-top:10px;}
.social-row a{
  width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.15);
  display:flex;align-items:center;justify-content:center;transition:.15s;
}
.social-row a:hover{background:var(--teal);border-color:var(--teal);}

/* Page header (interior pages) */
.page-hero{
  background:var(--navy);color:#fff;padding:64px 0;text-align:left;
  background-image:linear-gradient(rgba(45,212,191,.06) 1px, transparent 1px),linear-gradient(90deg, rgba(45,212,191,.06) 1px, transparent 1px);
  background-size:46px 46px;
}
.page-hero h1{color:#fff;margin-bottom:10px;}
.page-hero p{color:rgba(255,255,255,.7);max-width:640px;margin:0;}
.breadcrumb{font-size:.82rem;color:var(--teal-light);margin-bottom:14px;letter-spacing:.05em;}
.breadcrumb a{color:var(--teal-light);text-decoration:none;}

/* Utilities */
.mt-0{margin-top:0;}
.text-center{text-align:center;}
.tag{
  display:inline-block;background:rgba(13,148,136,.1);color:var(--teal);
  font-size:.75rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  padding:5px 12px;border-radius:999px;margin-bottom:10px;
}
.divider-blank{height:90px;}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in-view{opacity:1;transform:translateY(0);}
@media(max-width:768px){section{padding:64px 0;} .cta-band{padding:36px;flex-direction:column;text-align:center;}}