/* ===== Porttx — design tokens ===== */
:root{
  --bg: #0a0b0b;
  --bg-alt: #0e1010;
  --bg-raise: #131615;
  --line: rgba(255,255,255,0.09);
  --line-strong: rgba(255,255,255,0.16);
  --text: #f3f3ee;
  --text-dim: #a8ada9;
  --text-mute: #71766f;
  --accent: #14a6ab;
  --accent-bright: #3fd6d9;
  --accent-dim: rgba(20,166,171,0.14);
  --serif: Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --maxw: 1180px;
  --ease: cubic-bezier(.16,.8,.28,1);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }

.container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px;
}

::selection{ background:var(--accent); color:#031012; }

.noise-overlay{
  position:fixed; inset:0; pointer-events:none; z-index:2;
  background-image:radial-gradient(circle at 20% 20%, rgba(20,166,171,0.05), transparent 40%),
                    radial-gradient(circle at 80% 60%, rgba(20,166,171,0.04), transparent 45%);
}

/* ===== Header ===== */
.site-header{
  position:sticky; inset-inline:0; top:0; z-index:100;
  padding:22px 0;
  transition:background-color .4s var(--ease), padding .4s var(--ease), border-color .4s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  padding:14px 0;
  background:rgba(10,11,11,0.78);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.brand-logo{ height:34px; width:auto; }
.main-nav{ display:flex; align-items:center; gap:34px; margin-inline-end:auto; margin-inline-start:48px; }
.nav-link{
  font-size:.95rem; color:var(--text-dim); position:relative; padding:4px 0;
  transition:color .25s var(--ease);
}
.nav-link::after{
  content:''; position:absolute; left:0; bottom:0; width:0; height:1px; background:var(--accent-bright);
  transition:width .3s var(--ease);
}
.nav-link:hover{ color:var(--text); }
.nav-link:hover::after{ width:100%; }

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:13px 28px; border-radius:999px; font-size:.92rem; font-weight:600;
  transition:all .3s var(--ease); white-space:nowrap; border:1px solid transparent;
  cursor:pointer;
}
.btn-primary{ background:var(--accent); color:#031012; }
.btn-primary:hover{ background:var(--accent-bright); transform:translateY(-2px); box-shadow:0 10px 30px -10px rgba(63,214,217,0.5); }
.btn-ghost{ border-color:var(--line-strong); color:var(--text); }
.btn-ghost:hover{ border-color:var(--accent-bright); color:var(--accent-bright); transform:translateY(-2px); }
.btn-nav{ padding:11px 24px; font-size:.88rem; }

.nav-toggle{
  display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; z-index:200;
}
.nav-toggle span{ width:22px; height:2px; background:var(--text); transition:all .3s var(--ease); }
.nav-toggle.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero{
  position:relative; min-height:100vh; display:flex; align-items:center;
  padding-top:120px; overflow:hidden;
}
.hero-glow{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(ellipse 60% 50% at 50% 15%, rgba(20,166,171,0.16), transparent 60%),
    radial-gradient(ellipse 40% 40% at 85% 80%, rgba(20,166,171,0.08), transparent 60%);
}
.hero-inner{ position:relative; z-index:1; max-width:920px; }
.eyebrow{
  font-size:.85rem; letter-spacing:.06em; color:var(--accent-bright);
  font-weight:600; margin-bottom:18px; display:block;
}
.hero-title{
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(2.6rem, 6.2vw, 5.2rem);
  line-height:1.18;
  letter-spacing:-0.01em;
  margin-bottom:28px;
}
.text-accent{ color:var(--accent-bright); font-style:italic; }
.hero-sub{
  font-size:clamp(1.05rem, 1.6vw, 1.25rem);
  color:var(--text-dim);
  max-width:640px;
  margin-bottom:40px;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

.scroll-cue{
  position:absolute; bottom:38px; left:50%; transform:translateX(-50%);
  width:26px; height:42px; border:1px solid var(--line-strong); border-radius:20px;
  display:flex; justify-content:center; padding-top:8px; z-index:1;
}
.scroll-cue span{
  width:4px; height:8px; border-radius:2px; background:var(--accent-bright);
  animation:scrollDown 1.8s infinite;
}
@keyframes scrollDown{
  0%{ transform:translateY(0); opacity:1; }
  70%{ transform:translateY(14px); opacity:0; }
  100%{ opacity:0; }
}

/* ===== Section shared ===== */
section{ padding:120px 0; position:relative; scroll-margin-top:90px; }
.section-head{ max-width:720px; margin-bottom:64px; }
.section-title{
  font-family:var(--serif); font-weight:400;
  font-size:clamp(1.9rem, 3.4vw, 2.8rem);
  line-height:1.3;
}

/* ===== About ===== */
.about{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.about-grid{ display:grid; grid-template-columns:1fr 1fr; gap:72px; align-items:start; }
.about-lead{ font-size:1.2rem; color:var(--text-dim); line-height:1.9; }
.pillars{ display:flex; flex-direction:column; gap:36px; }
.pillar{ border-inline-start:2px solid var(--accent-dim); padding-inline-start:24px; transition:border-color .3s; }
.pillar:hover{ border-inline-start-color:var(--accent-bright); }
.pillar-num{ font-family:var(--serif); font-style:italic; color:var(--accent); font-size:.95rem; }
.pillar h3{ font-size:1.3rem; margin:8px 0 8px; font-weight:700; }
.pillar p{ color:var(--text-dim); font-size:.97rem; }

/* ===== Sectors ===== */
.sector-list{ display:flex; flex-direction:column; gap:1px; background:var(--line); border:1px solid var(--line); border-radius:20px; overflow:hidden; }
.sector-card{
  background:var(--bg);
  display:grid; grid-template-columns:120px 1fr; gap:36px; padding:52px;
  transition:background .35s var(--ease);
}
.sector-card:hover{ background:var(--bg-raise); }
.sector-icon{
  width:72px; height:72px; border-radius:18px; background:var(--accent-dim);
  color:var(--accent-bright); display:flex; align-items:center; justify-content:center;
  transition:transform .35s var(--ease), background .35s;
}
.sector-icon svg{ width:34px; height:34px; }
.sector-card:hover .sector-icon{ transform:scale(1.08) rotate(-4deg); background:rgba(63,214,217,0.2); }
.sector-num{ font-family:var(--serif); font-style:italic; color:var(--accent); font-size:1rem; }
.sector-body h3{ font-size:1.6rem; font-weight:800; margin:10px 0 4px; }
.sector-body h4{ font-family:var(--serif); font-weight:400; font-style:italic; font-size:1.15rem; color:var(--accent-bright); margin-bottom:14px; }
.sector-tag{ font-weight:600; color:var(--text); margin-bottom:12px; font-size:1rem; }
.sector-body p:last-child{ color:var(--text-dim); font-size:1rem; max-width:640px; }

/* ===== Why ===== */
.why{ background:var(--bg-alt); border-bottom:1px solid var(--line); text-align:center; }
.why-inner{ max-width:780px; margin:0 auto; display:flex; flex-direction:column; align-items:center; }
.why-title{
  font-family:var(--serif); font-weight:400;
  font-size:clamp(2rem, 4vw, 3.2rem); line-height:1.35; margin-bottom:26px;
}
.why-sub{ color:var(--text-dim); font-size:1.1rem; max-width:600px; }

/* ===== Founder ===== */
.founder{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.founder-inner{
  display:grid; grid-template-columns:280px 1fr; gap:56px; align-items:center;
}
.founder-photo-wrap{
  position:relative; width:100%; aspect-ratio:1/1; border-radius:28px; overflow:hidden;
  border:1px solid var(--line-strong); background:var(--bg-raise);
  box-shadow:0 0 0 1px rgba(20,166,171,0.15), 0 30px 60px -30px rgba(0,0,0,0.6);
}
.founder-photo-wrap::after{
  content:''; position:absolute; inset:0; pointer-events:none; border-radius:inherit; z-index:1;
  background:linear-gradient(160deg, rgba(20,166,171,0.16), transparent 40%);
}
.founder-photo{
  width:100%; height:100%; object-fit:cover; display:block; filter:saturate(0.92) contrast(1.03);
  -webkit-mask-image:radial-gradient(circle at 50% 40%, #000 56%, transparent 92%);
  mask-image:radial-gradient(circle at 50% 40%, #000 56%, transparent 92%);
}
.founder-content{ max-width:640px; }
.founder-quote{
  font-family:var(--serif); font-style:italic; font-weight:400;
  font-size:clamp(1.3rem, 2.4vw, 1.7rem); line-height:1.6; color:var(--text);
  margin:14px 0 22px; position:relative;
}
.founder-attribution{ font-size:1rem; font-weight:700; color:var(--accent-bright); }
.founder-attribution span{ color:var(--text-mute); font-weight:400; }

@media (max-width:820px){
  .founder-inner{ grid-template-columns:1fr; gap:32px; text-align:center; }
  .founder-photo-wrap{ max-width:220px; margin:0 auto; }
  .founder-quote{ text-align:start; }
  .founder-attribution{ text-align:start; }
}

/* ===== Contact ===== */
.contact{ text-align:center; }
.contact-inner{ max-width:760px; margin:0 auto; }
.contact-title{
  font-family:var(--serif); font-weight:400;
  font-size:clamp(1.8rem, 3.6vw, 2.6rem); line-height:1.35; margin:18px 0 16px;
}
.contact-sub{ color:var(--text-dim); font-size:1.1rem; margin-bottom:38px; }
.contact-actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* ===== Contact form ===== */
.contact-form{ text-align:start; display:flex; flex-direction:column; gap:18px; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.form-field{ display:flex; flex-direction:column; gap:8px; }
.form-field label{ font-size:.88rem; color:var(--text-dim); font-weight:600; }
.form-field input,
.form-field textarea{
  background:var(--bg-alt); border:1px solid var(--line-strong); border-radius:12px;
  color:var(--text); padding:13px 16px; font-size:1rem; font-family:inherit; resize:vertical;
  transition:border-color .25s;
}
.form-field input:focus,
.form-field textarea:focus{ outline:none; border-color:var(--accent-bright); }
.hp-field{ position:absolute; width:1px; height:1px; opacity:0; pointer-events:none; overflow:hidden; }
.form-actions{ display:flex; gap:16px; align-items:center; justify-content:center; flex-wrap:wrap; margin-top:6px; }
.form-status{ min-height:1.4em; font-size:.92rem; text-align:center; }
.form-status.is-success{ color:var(--accent-bright); }
.form-status.is-error{ color:#e0605a; }
.btn:disabled{ opacity:.6; cursor:default; transform:none !important; }

@media (max-width:640px){
  .form-row{ grid-template-columns:1fr; }
}

/* ===== Footer ===== */
.site-footer{ border-top:1px solid var(--line); padding:40px 0; }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.footer-logo{ height:22px; opacity:.85; }
.footer-nav{ display:flex; gap:28px; flex-wrap:wrap; }
.footer-nav a{ color:var(--text-mute); font-size:.9rem; transition:color .25s; }
.footer-nav a:hover{ color:var(--accent-bright); }
.footer-copy{ color:var(--text-mute); font-size:.85rem; }

/* ===== Scroll reveal ===== */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in-view{ opacity:1; transform:translateY(0); }
.pillar.reveal:nth-child(2){ transition-delay:.08s; }
.pillar.reveal:nth-child(3){ transition-delay:.16s; }
.sector-card.reveal:nth-child(2){ transition-delay:.08s; }
.sector-card.reveal:nth-child(3){ transition-delay:.16s; }

/* ===== Mobile nav ===== */
@media (max-width:900px){
  .main-nav{
    position:fixed; inset:0; margin:0; z-index:150;
    background:rgba(8,9,9,0.98); backdrop-filter:blur(10px);
    flex-direction:column; justify-content:center; align-items:center; gap:32px;
    opacity:0; pointer-events:none; transform:translateY(-12px);
    transition:all .35s var(--ease);
  }
  .main-nav.open{ opacity:1; pointer-events:all; transform:translateY(0); }
  .nav-link{ font-size:1.4rem; }
  .btn-nav{ display:none; }
  .nav-toggle{ display:flex; }
  .about-grid{ grid-template-columns:1fr; gap:48px; }
  .sector-card{ grid-template-columns:1fr; gap:20px; padding:36px 28px; }
}

@media (max-width:560px){
  .container{ padding:0 20px; }
  section{ padding:80px 0; }
  .hero{ padding-top:110px; }
  .hero-actions .btn, .contact-actions .btn{ width:100%; }
  .footer-inner{ flex-direction:column; text-align:center; }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  .reveal{ opacity:1; transform:none; transition:none; }
}