/* ==========================================================================
   Villa Metsälä — main.css
   Yhteinen tyylitiedosto kaikille sivuille
   Värimaailma: vaalea harmahtava + petrol-aksentti
   ========================================================================== */

:root{
  /* Pohja */
  --bg:#EEEFEC;
  --bg-2:#E5E7E3;
  --bg-3:#F6F6F4;
  --bg-4:#DDDFD9;

  /* Teksti */
  --ink:#1F2624;
  --ink-soft:#3D4744;
  --muted:#6B7470;
  --dim:#909893;

  /* Viivat */
  --line:rgba(31,38,36,0.13);
  --line-soft:rgba(31,38,36,0.06);
  --line-strong:rgba(31,38,36,0.22);

  /* Aksentti */
  --accent:#3D6B6B;
  --accent-2:#4D8484;
  --accent-soft:rgba(61,107,107,0.10);

  /* Typografia */
  --display:'Cormorant Garamond',Georgia,serif;
  --body:'Inter',system-ui,-apple-system,sans-serif;

  /* Layout */
  --max:1320px;
  --r:8px;
  --r-lg:18px;

  /* Varjot */
  --shadow-sm:0 4px 12px -2px rgba(31,38,36,.06);
  --shadow:0 16px 40px -10px rgba(31,38,36,.12);
  --shadow-lg:0 30px 60px -15px rgba(31,38,36,.18);
}

/* ==========================================================================
   Reset & perus
   ========================================================================== */

*{box-sizing:border-box;margin:0;padding:0}
html,body{overflow-x:hidden;scroll-behavior:smooth}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--body);
  font-size:16px;
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  position:relative;
}

/* hienovarainen paperi-grain */
body::before{
  content:'';
  position:fixed;inset:0;
  pointer-events:none;z-index:1;
  opacity:.28;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.12 0 0 0 0 0.15 0 0 0 0 0.14 0 0 0 .14 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode:multiply;
}

img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* ==========================================================================
   Typografia
   ========================================================================== */

h1,h2,h3,h4{
  font-family:var(--display);
  font-weight:300;
  letter-spacing:-0.012em;
  line-height:1.04;
  color:var(--ink);
}
h1{font-size:clamp(3.2rem,7.2vw,7rem);font-weight:300}
h2{font-size:clamp(2.4rem,4.8vw,4.4rem);font-weight:300}
h3{font-size:clamp(1.4rem,2vw,1.7rem);font-weight:400}
em{font-style:italic;color:var(--accent);font-weight:300}
p{color:var(--ink-soft);font-weight:400}

.container{
  max-width:var(--max);
  margin:0 auto;
  padding:0 2rem;
  position:relative;z-index:2;
}

.eyebrow{
  font-family:var(--body);
  font-size:.74rem;letter-spacing:.28em;text-transform:uppercase;
  color:var(--accent);font-weight:500;
  display:inline-flex;align-items:center;gap:.7rem;
}
.eyebrow::before{content:'';width:24px;height:1px;background:var(--accent)}

.section-num{
  font-family:var(--display);font-style:italic;
  color:var(--accent);font-size:1.1rem;letter-spacing:.02em;font-weight:300;
}

/* ==========================================================================
   Header & Navi
   ========================================================================== */

header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:1.3rem 0;background:transparent;
  transition:background .35s ease,padding .3s ease,border-color .3s ease;
  border-bottom:1px solid transparent;
}
header.scrolled{
  background:rgba(238,239,236,.85);
  backdrop-filter:blur(18px) saturate(120%);
  -webkit-backdrop-filter:blur(18px) saturate(120%);
  padding:.85rem 0;
  border-bottom-color:var(--line-soft);
}

.nav{display:flex;align-items:center;justify-content:space-between;gap:2rem}

.brand{
  font-family:var(--display);font-size:1.7rem;font-weight:300;
  color:var(--ink);
  display:inline-flex;align-items:center;gap:.6rem;letter-spacing:.005em;
}
.brand em{color:var(--accent);font-style:italic;font-weight:300}
.brand-mark{width:28px;height:28px;display:grid;place-items:center;color:var(--accent)}

.nav-links{display:flex;gap:2.4rem;align-items:center;list-style:none}
.nav-links a{font-size:.92rem;color:var(--ink-soft);font-weight:400;transition:color .2s}
.nav-links a:hover{color:var(--accent)}

/* Header CTA — spesifisempi selector ja eksplisiittinen kontrasti, jotta nav-links a -sääntö ei voita */
.nav-links .nav-cta{
  padding:.8rem 1.7rem;
  background:var(--ink);
  color:#F6F6F4;
  border-radius:50px;
  font-weight:500;font-size:.88rem;
  transition:transform .25s ease,background .25s ease,color .25s ease;
  position:relative;z-index:2;
}
.nav-links .nav-cta:hover{background:#2A3431;color:#FFFFFF;transform:translateY(-1px)}

.menu-toggle{
  display:none;font-size:1.6rem;
  color:var(--ink);padding:.3rem;line-height:1;
}

.mobile-menu{
  display:none;position:fixed;inset:0;z-index:200;
  background:var(--bg);padding:5rem 1.5rem 2rem;
  flex-direction:column;gap:.5rem;
}
.mobile-menu.open{display:flex}
.mobile-menu a{
  font-family:var(--display);font-size:2rem;
  padding:1rem 0;border-bottom:1px solid var(--line);
  color:var(--ink);font-weight:300;
}
.mobile-menu a em{color:var(--accent);font-style:italic}
.mobile-menu .nav-cta-mobile{
  margin-top:1.5rem;padding:1.1rem;
  background:var(--ink);color:var(--bg);
  border-radius:50px;text-align:center;
  font-family:var(--body);font-size:1rem;font-weight:500;
  border-bottom:none;
}
.mobile-close{
  position:absolute;top:1.5rem;right:1.5rem;
  font-size:1.8rem;color:var(--ink);cursor:pointer;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn{
  display:inline-flex;align-items:center;gap:.7rem;
  padding:1.05rem 2rem;border-radius:50px;
  font-weight:500;font-size:.95rem;
  transition:all .28s ease;
  white-space:nowrap;letter-spacing:.01em;
}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-primary:hover{background:#2A3431;transform:translateY(-2px);box-shadow:0 14px 36px -10px rgba(31,38,36,.3)}
.btn-secondary{background:transparent;color:var(--ink);border:1px solid var(--line-strong)}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent)}

/* ==========================================================================
   Sisäisesti käytettävät komponentit (kortit, FAQ jne.)
   Kopioitu v4-vaalea-petrol -mockupista — voi tarvittaessa siirtää tänne
   tai pitää sivukohtaisina <style>-blokkeina.
   ========================================================================== */

/* Reveal-animaatio */
.reveal{
  opacity:0;transform:translateY(28px);
  transition:opacity .9s ease,transform .9s ease;
}
.reveal.in{opacity:1;transform:translateY(0)}

/* ==========================================================================
   AI SEO — collapsible (details/summary)
   Yhteinen avattava tietolaatikko sivun alaosaan ennen footeria.
   Käytä HTML-rakennetta:
     <section class="ai-seo" aria-label="Tietoa Villa Metsälästä">
       <div class="container">
         <details class="ai-seo-details">
           <summary class="ai-seo-summary">
             <span class="summary-label">Lue lisää Villa Metsälästä</span>
             <span class="summary-icon" aria-hidden="true">+</span>
           </summary>
           <div class="ai-seo-content">
             <p>...</p>
             <dl class="ai-seo-facts">...</dl>
             <p>...</p>
           </div>
         </details>
       </div>
     </section>
   ========================================================================== */
.ai-seo{padding:3.5rem 0 5rem;border-top:1px solid var(--line-soft)}
.ai-seo-details{
  max-width:920px;margin:0 auto;
  background:var(--bg-3);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.ai-seo-details[open]{box-shadow:var(--shadow-sm);border-color:var(--line-strong)}
.ai-seo-summary{
  list-style:none;cursor:pointer;
  padding:1.4rem 1.8rem;
  display:flex;justify-content:space-between;align-items:center;gap:1rem;
  font-family:var(--body);font-size:.95rem;font-weight:500;color:var(--ink);
  transition:background .2s ease;
}
.ai-seo-summary::-webkit-details-marker{display:none}
.ai-seo-summary::marker{display:none;content:''}
.ai-seo-summary:hover{background:#FBFBF9}
.summary-label{display:flex;align-items:center;gap:.8rem}
.summary-label::before{content:'';width:24px;height:1px;background:var(--accent);flex-shrink:0}
.summary-icon{
  flex-shrink:0;width:34px;height:34px;border-radius:50%;
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  color:var(--accent);font-size:1.05rem;font-weight:300;font-family:var(--body);
  transition:transform .35s ease,background .25s,color .25s,border-color .25s;
}
.ai-seo-details[open] .summary-icon{transform:rotate(45deg);background:var(--ink);color:var(--bg);border-color:var(--ink)}
.ai-seo-content{
  padding:.4rem 1.8rem 1.8rem;border-top:1px solid var(--line);
  font-size:.96rem;line-height:1.75;color:var(--muted);
}
.ai-seo-content p{margin:1rem 0;color:var(--muted)}
.ai-seo-facts{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:.4rem 2rem;margin:1.4rem 0;
  padding:1.2rem 1.4rem;
  background:var(--bg-2);
  border:1px solid var(--line);border-radius:var(--r);
  font-size:.9rem;
}
.ai-seo-facts dt{color:var(--dim);font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;font-weight:500}
.ai-seo-facts dd{color:var(--ink);font-weight:500;margin-bottom:.5rem}

@media(max-width:980px){
  .ai-seo-facts{grid-template-columns:1fr}
}
@media(max-width:640px){
  .ai-seo{padding:4.5rem 0}
  .ai-seo-summary{padding:1.2rem 1.4rem}
  .ai-seo-content{padding:.3rem 1.4rem 1.4rem}
}

/* ==========================================================================
   Big CTA — yhteinen kaikille sivuille
   Tumma tausta + petrol-gradientit → herättää huomion ennen footeria.
   Sivukohtaiset tyylit voivat ylikirjoittaa paddingin tms., mutta perusilme
   tulee tästä.
   ========================================================================== */
.big-cta{
  padding:7rem 0;
  background:var(--ink);
  color:var(--bg);
  text-align:center;
  position:relative;
  overflow:hidden;
  border-top:none;
}
.big-cta::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(circle at 80% 20%,rgba(77,132,132,.18) 0%,transparent 60%),
    radial-gradient(circle at 20% 80%,rgba(77,132,132,.10) 0%,transparent 50%);
  pointer-events:none;
}
.big-cta .container{position:relative;z-index:2}
.big-cta .eyebrow{color:var(--accent-2);justify-content:center}
.big-cta h2{
  color:var(--bg);
  font-size:clamp(2.6rem,5.5vw,5.2rem);
  margin:1.5rem auto 1.5rem;max-width:900px;font-weight:300;
}
.big-cta h2 em{color:var(--accent-2)}
.big-cta p{
  color:rgba(238,239,236,.72);
  max-width:580px;margin:0 auto 2.5rem;font-size:1.05rem;
}
.big-cta .btn-primary{
  background:var(--accent-2);color:var(--ink);
  font-size:1rem;padding:1.2rem 2.4rem;
}
.big-cta .btn-primary:hover{background:#5C9494}
.big-cta .btn-secondary{
  background:transparent;color:var(--bg);
  border:1px solid rgba(238,239,236,.3);
}
.big-cta .btn-secondary:hover{
  background:rgba(238,239,236,.08);
  border-color:rgba(238,239,236,.5);
  color:var(--bg);
}
.big-cta-actions{
  display:inline-flex;gap:1rem;flex-wrap:wrap;justify-content:center;
}

@media(max-width:640px){
  .big-cta{padding:5rem 0}
  .big-cta-actions{flex-direction:column;width:100%}
  .big-cta-actions .btn{width:100%;justify-content:center}
}

/* ==========================================================================
   Footer
   Selectorit kohdistuu suoraan <footer>-tagiin (ei .footer-luokkaa,
   joka oli vanha bug → list-style:none ei astunut voimaan).
   Premium-tyyli: ei bullet-pisteitä, hover-tilassa pieni vasen-padding.
   ========================================================================== */
footer{padding:5rem 0 2.5rem;background:var(--bg);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3.5rem}
.footer-brand{font-family:var(--display);font-size:2.2rem;margin-bottom:1rem;color:var(--ink);font-weight:300}
.footer-brand em{color:var(--accent)}
.footer-grid > div > p{font-size:.94rem;line-height:1.65;color:var(--muted);max-width:340px}

footer h4{
  font-family:var(--body);font-size:.74rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--ink);margin-bottom:1.4rem;font-weight:600;
}
footer ul{list-style:none;padding:0;margin:0}
footer ul li{margin-bottom:.7rem;list-style:none}
footer ul a{
  font-size:.93rem;color:var(--muted);font-weight:400;
  display:inline-block;
  transition:color .25s ease,padding-left .25s ease;
  position:relative;
}
footer ul a:hover{color:var(--accent);padding-left:.4rem}

/* Footer — sosiaalisen median ikonit (Facebook, Instagram) */
.footer-social{
  display:flex;gap:.6rem;
  margin-top:1.6rem;
}
.footer-social a{
  width:38px;height:38px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  border-radius:50%;
  color:var(--ink-soft);
  transition:color .25s ease,border-color .25s ease,transform .25s ease,background .25s ease;
}
.footer-social a:hover{
  color:var(--accent);
  border-color:var(--accent);
  background:var(--accent-soft);
  transform:translateY(-2px);
}
.footer-social svg{width:18px;height:18px}

.footer-bottom{
  padding-top:2rem;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:1rem;font-size:.84rem;color:var(--dim);
}
.footer-bottom a{color:var(--dim);transition:color .2s}
.footer-bottom a:hover{color:var(--accent)}
.footer-credit{font-size:.8rem;color:var(--dim)}
.footer-credit a{color:var(--accent);font-weight:500}

/* ==========================================================================
   Responsiivinen
   ========================================================================== */

@media(max-width:980px){
  .container{padding:0 1.5rem}
  .footer-grid{grid-template-columns:1fr 1fr;gap:2.5rem}
}

@media(max-width:640px){
  body{font-size:15px}
  .nav-links{display:none}
  .nav-cta{display:none}
  .menu-toggle{display:block}
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .footer-grid > div > p{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left}
}