/* ==========================================================
   PC-KEISARI — jaettu brändityyli
   Sama väripaletti ja typografia kuin tekoäly-luentodioissa.
   Linkitä tämä tiedosto jokaiselta sivulta:
   <link rel="stylesheet" href="/brand.css">
   ========================================================== */

:root{
  --ink:#2E2A47;
  --ink-soft:#4A4560;
  --paper:#FFFFFF;
  --paper-warm:#F7F5F1;
  --gold:#C89B3C;
  --gold-soft:#E4C784;
  --teal:#5B8C85;
  --rust:#A6633A;
  --rust-soft:#C98858;
  --muted:#8783A0;
  --line:#E4E1EC;
  --dark-text:#EDEAF6;
  --dark-text-soft:#B9B4D4;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',sans-serif;
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;}

/* ---- header / nav (shared across all pages) ---- */
header.site-header{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; justify-content:space-between;
  padding:1.4rem 5vw;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.logo{
  font-family:'Fraunces',serif;
  font-weight:600;
  font-size:1.3rem;
  letter-spacing:.02em;
  color:var(--ink);
  text-decoration:none;
  display:flex; align-items:center; gap:.6rem;
}
.logo-img{
  width:64px; height:64px; border-radius:50%;
  object-fit:cover; flex-shrink:0;
}
@media(max-width:480px){
  .logo-img{width:40px; height:40px;}
  header.site-header{padding:1rem 4vw; gap:.6rem; flex-wrap:wrap;}
  .logo{font-size:1.05rem;}
  .nav-cta{padding:.5rem 1rem; font-size:.85rem;}
}
.logo span{color:var(--gold);}
header.site-header nav{display:flex; gap:2.2rem; font-size:.92rem; font-weight:500;}
header.site-header nav a{text-decoration:none; color:var(--ink-soft); transition:color .15s;}
header.site-header nav a:hover{color:var(--ink);}
header.site-header nav a.current{color:var(--ink); font-weight:700;}
.nav-cta{
  background:var(--ink); color:#fff !important;
  padding:.55rem 1.3rem; border-radius:999px;
  font-weight:600;
}
@media(max-width:780px){ header.site-header nav a:not(.nav-cta){display:none;} }

/* ---- buttons ---- */
.btn{
  font-family:'Inter',sans-serif; font-weight:600; font-size:.95rem;
  padding:.85rem 1.7rem; border-radius:999px; text-decoration:none;
  display:inline-flex; align-items:center; gap:.5rem; border:none; cursor:pointer;
  transition:transform .15s, background .15s;
}
.btn-primary{background:var(--gold); color:var(--ink);}
.btn-primary:hover{background:var(--gold-soft); transform:translateY(-1px);}
.btn-ghost{background:transparent; color:var(--dark-text); border:1px solid rgba(255,255,255,.3);}
.btn-ghost:hover{background:rgba(255,255,255,.08);}
.btn-ghost-light{background:transparent; color:var(--ink); border:1px solid var(--line);}
.btn-ghost-light:hover{background:var(--paper-warm);}

/* ---- section heading (shared pattern) ---- */
.section-head{padding:8vh 5vw 1vh; text-align:center;}
.section-head .eyebrow{
  font-size:.78rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--teal); font-weight:600; margin-bottom:1rem;
}
.section-head h2{
  font-family:'Fraunces',serif; font-weight:500;
  font-size:clamp(1.8rem,3.2vw,2.6rem); margin:0 auto; max-width:22ch;
}
.section-head p{color:var(--muted); max-width:48ch; margin:1rem auto 0; font-size:1rem;}

/* ---- badges / tags ---- */
.badge{
  border:1.5px solid var(--gold); border-radius:999px; padding:.45rem 1rem;
  font-size:.85rem; font-weight:600; color:var(--ink); background:rgba(200,155,60,.07);
}
.tag{
  font-size:.72rem; font-weight:600; letter-spacing:.03em;
  padding:.3rem .65rem; border-radius:999px;
}
.tag-level{background:rgba(200,155,60,.12); color:#8a6b23;}
.tag-time{background:rgba(91,140,133,.12); color:var(--teal);}

/* ---- page hero (Sovi tapaaminen, Lue ja opi, Digi-Apuri ym. alasivut) ---- */
.page-hero{
  background:var(--ink); color:var(--dark-text);
  padding:7vh 5vw 6vh; position:relative; overflow:hidden;
}
.page-hero::before{
  content:""; position:absolute; right:-6vw; top:-10vh;
  width:420px; height:420px; border-radius:50%;
  background:radial-gradient(circle, rgba(200,155,60,.16), transparent 70%);
}
.page-hero .kicker{font-size:.78rem; letter-spacing:.18em; text-transform:uppercase; color:var(--gold-soft); font-weight:600; margin-bottom:1.2rem;}
.page-hero h1{font-family:'Fraunces',serif; font-weight:500; font-size:clamp(2rem,4.4vw,3rem); line-height:1.1; margin:0 0 1rem; max-width:18ch;}
.page-hero p{font-family:'Fraunces',serif; font-style:italic; font-size:clamp(1rem,1.5vw,1.2rem); color:var(--dark-text-soft); max-width:48ch; margin:0;}

/* ---- course card grid (Etusivu + Lue ja opi) ---- */
.courses{padding:5vh 5vw 9vh; display:grid; gap:1.6rem; grid-template-columns:repeat(3,1fr);}
.card{border:1px solid var(--line); border-radius:18px; padding:2rem 1.7rem; display:flex; flex-direction:column; gap:1rem; background:var(--paper); transition:box-shadow .2s, transform .2s, border-color .2s; text-decoration:none; color:var(--ink);}
.card:hover{box-shadow:0 18px 40px rgba(46,42,71,.1); transform:translateY(-3px); border-color:var(--gold-soft);}
.card-icon{width:52px; height:52px; border-radius:50%; background:rgba(91,140,133,.1); display:flex; align-items:center; justify-content:center; font-size:1.4rem;}
.card:nth-child(3n+2) .card-icon{background:rgba(166,99,58,.12);}
.card:nth-child(3n) .card-icon{background:rgba(200,155,60,.14);}
.card h3{font-family:'Fraunces',serif; font-weight:500; font-size:1.28rem; margin:0;}
.card p{font-size:.92rem; color:var(--muted); line-height:1.55; margin:0; flex-grow:1;}
.card-meta{display:flex; gap:.5rem; flex-wrap:wrap;}
.card-cta{font-size:.88rem; font-weight:600; color:var(--ink); display:flex; align-items:center; gap:.4rem; margin-top:.2rem;}
.card:hover .card-cta{color:var(--gold);}
@media(max-width:980px){ .courses{grid-template-columns:repeat(2,1fr);} }
@media(max-width:640px){ .courses{grid-template-columns:1fr;} }

/* ---- footer (shared across all pages) ---- */
footer.site-footer{
  background:var(--paper-warm); padding:5vh 5vw 4vh;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:2rem;
  border-top:1px solid var(--line); font-size:.85rem; color:var(--muted);
}
footer.site-footer .f-logo{font-family:'Fraunces',serif; font-weight:600; color:var(--ink); font-size:1.05rem; margin-bottom:.5rem;}