/* ============================================================
   Rivercell — website styles (home + manifesto)
   ============================================================ */

/* ---------------- Playfair Display ---------------- */
@font-face{font-family:"Playfair Display";font-style:normal;font-weight:400;font-display:swap;src:url("assets/fonts/PlayfairDisplay-400.ttf") format("truetype");}
@font-face{font-family:"Playfair Display";font-style:normal;font-weight:500;font-display:swap;src:url("assets/fonts/PlayfairDisplay-500.ttf") format("truetype");}
@font-face{font-family:"Playfair Display";font-style:normal;font-weight:600;font-display:swap;src:url("assets/fonts/PlayfairDisplay-600.ttf") format("truetype");}
@font-face{font-family:"Playfair Display";font-style:normal;font-weight:700;font-display:swap;src:url("assets/fonts/PlayfairDisplay-700.ttf") format("truetype");}
@font-face{font-family:"Playfair Display";font-style:normal;font-weight:800;font-display:swap;src:url("assets/fonts/PlayfairDisplay-800.ttf") format("truetype");}
@font-face{font-family:"Playfair Display";font-style:normal;font-weight:900;font-display:swap;src:url("assets/fonts/PlayfairDisplay-900.ttf") format("truetype");}
@font-face{font-family:"Playfair Display";font-style:italic;font-weight:400;font-display:swap;src:url("assets/fonts/PlayfairDisplay-400i.ttf") format("truetype");}
@font-face{font-family:"Playfair Display";font-style:italic;font-weight:700;font-display:swap;src:url("assets/fonts/PlayfairDisplay-700i.ttf") format("truetype");}

/* ---------------- Lato ---------------- */
@font-face{font-family:"Lato";font-style:normal;font-weight:300;font-display:swap;src:url("assets/fonts/Lato-300.ttf") format("truetype");}
@font-face{font-family:"Lato";font-style:italic;font-weight:300;font-display:swap;src:url("assets/fonts/Lato-300i.ttf") format("truetype");}
@font-face{font-family:"Lato";font-style:normal;font-weight:400;font-display:swap;src:url("assets/fonts/Lato-400.ttf") format("truetype");}
@font-face{font-family:"Lato";font-style:italic;font-weight:400;font-display:swap;src:url("assets/fonts/Lato-400i.ttf") format("truetype");}
@font-face{font-family:"Lato";font-style:normal;font-weight:700;font-display:swap;src:url("assets/fonts/Lato-700.ttf") format("truetype");}
@font-face{font-family:"Lato";font-style:italic;font-weight:700;font-display:swap;src:url("assets/fonts/Lato-700i.ttf") format("truetype");}
@font-face{font-family:"Lato";font-style:normal;font-weight:900;font-display:swap;src:url("assets/fonts/Lato-900.ttf") format("truetype");}

*{ margin:0; padding:0; box-sizing:border-box; }

:root{
  --ink:#151516; --blue:#181376; --cyan:#36CDE1; --green:#C9F7CC;
  --ink-70:rgba(21,21,22,.70); --ink-55:rgba(21,21,22,.55); --ink-40:rgba(21,21,22,.40);
  --line:rgba(21,21,22,.12);
  --serif:"Lato",system-ui,sans-serif; --sans:"Lato",system-ui,sans-serif;
  --display:"Playfair Display",Georgia,serif;
  --maxw:1680px; --gutter:clamp(24px, 5vw, 88px);
}

html{ scroll-behavior:smooth; }
body{
  font-family:var(--sans); color:var(--ink); background:#fff;
  -webkit-font-smoothing:antialiased; line-height:1.5;
}
a{ color:inherit; text-decoration:none; }
img{ display:block; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 var(--gutter); }

.skip{ position:absolute; left:-9999px; }
.skip:focus{ left:16px; top:12px; z-index:100; background:#fff; padding:10px 16px; border-radius:8px; border:1px solid var(--line); }

/* ---------------- type ---------------- */
.eyebrow{ font-size:14px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-55); }
h1,h2,h3{ font-family:var(--display); font-weight:500; letter-spacing:-.02em; line-height:1.15; }
.lead{ font-size:21px; line-height:1.55; color:var(--ink-70); font-weight:400; }
p{ font-size:18px; line-height:1.65; color:var(--ink-70); }

.emph-green{ font-weight:700; color:var(--ink); background:var(--green); border-radius:6px; padding:0 7px; box-decoration-break:clone; -webkit-box-decoration-break:clone; }
.emph-u{ font-weight:700; color:var(--ink); text-decoration:underline; text-underline-offset:3px; text-decoration-thickness:2px; }
.emph-box{ font-weight:700; color:var(--green); border:1.5px solid var(--green); border-radius:5px; padding:0 6px; box-decoration-break:clone; -webkit-box-decoration-break:clone; }
.serif-italic{ font-family:var(--display); font-style:italic; font-weight:700; }

/* ---------------- nav ---------------- */
.nav{ position:sticky; top:0; z-index:50; background:#fff; border-bottom:1px solid var(--line); }
.nav-inner{ display:flex; align-items:center; justify-content:space-between; height:74px; }
.brand{ display:flex; align-items:center; }
.brand img{ height:30px; width:auto; display:block; }
.nav-links{ display:flex; align-items:center; gap:8px; }
.nav-links a{
  font-size:15px; font-weight:700; letter-spacing:.01em;
  padding:6px 14px; border-radius:999px; white-space:nowrap;
  transition:background .2s, color .2s;
}
.nav-links a:hover{ color:var(--ink-55); }
.nav-links a[aria-current="page"],
.nav-links a[aria-current="true"]{
  background:var(--green);
}
.nav-links a[aria-current="page"]:hover,
.nav-links a[aria-current="true"]:hover{ color:var(--ink); }

.nav-check{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip:rect(0,0,0,0); white-space:nowrap; border:0;
}
@media (min-width:901px){
  .nav-check{ display:none; }
}
.nav-toggle{
  display:none; align-items:center; justify-content:center;
  height:40px; padding:0 16px; border-radius:999px;
  border:1.5px solid var(--line); background:#fff;
  font-weight:700; font-size:14px; cursor:pointer;
}
.nav-close-label{ display:none; }
.nav-check:focus-visible + .nav-toggle{ outline:2px solid var(--cyan); outline-offset:3px; }

/* ---------------- buttons ---------------- */
.btn{ display:inline-flex; align-items:center; gap:8px; font-family:var(--sans); font-weight:700; font-size:15px; border-radius:999px; padding:13px 26px; cursor:pointer; border:1.5px solid transparent; transition:transform .12s ease, background .2s, color .2s, border-color .2s; }
.btn:active{ transform:translateY(1px); }
.btn-ink{ background:var(--ink); color:#fff; }
.btn-ink:hover{ background:#000; }
.btn-ghost{ background:transparent; color:var(--ink); border-color:rgba(21,21,22,.25); }
.btn-ghost:hover{ border-color:var(--ink); }

/* ---------------- footer ---------------- */
.footer{ background:var(--ink); color:#fff; padding:64px 0 40px; }
.footer .brand img{ height:30px; }
.footer-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:40px; flex-wrap:wrap; }
.footer-links{ display:flex; gap:48px; flex-wrap:wrap; }
.footer-col{ display:flex; flex-direction:column; gap:12px; }
.footer-col .h{ font-size:12px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:rgba(255,255,255,.45); margin-bottom:4px; }
.footer-col a, .footer-col span{ font-size:15px; color:rgba(255,255,255,.78); }
.footer-col a:hover{ color:#fff; }
.footer-bottom{ margin-top:56px; padding-top:24px; border-top:1px solid rgba(255,255,255,.14); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; font-size:13px; color:rgba(255,255,255,.5); }
.footer-bottom a:hover{ color:#fff; }

/* ---------------- shared section furniture ---------------- */
.section{ padding:clamp(72px,9vh,124px) 0; border-top:1px solid var(--line); }
.section-head{ max-width:760px; margin-bottom:44px; }
.section-head .eyebrow{ display:block; margin-bottom:18px; }
.section-head h2{ font-size:clamp(32px,3.2vw,54px); margin-bottom:22px; }
.kicker-rule{ display:flex; align-items:center; gap:18px; margin:52px 0 26px; }
.kicker-rule .line{ flex:1; height:1px; background:var(--line); }

@media (max-width:900px){
  :root{ --gutter:24px; }
  .nav:has(.nav-toggle) .nav-toggle{ display:inline-flex; }
  .nav:has(.nav-toggle) .nav-links{
    display:none;
    position:absolute; top:100%; left:0; right:0; z-index:60;
    flex-direction:column; align-items:stretch; gap:2px;
    padding:8px var(--gutter) 16px;
    background:#fff; border-bottom:1px solid var(--line);
  }
  .nav:has(.nav-check:checked) .nav-links{ display:flex; }
  .nav:has(.nav-check:checked) .nav-open-label{ display:none; }
  .nav:has(.nav-check:checked) .nav-close-label{ display:inline; }
  .nav:has(.nav-toggle) .nav-links a{ padding:12px 14px; }
}