/* ============================================================
   ALPİN KAĞIT — Site stili
   Palet: kraft karton, matbaa mürekkebi, damga kırmızısı
   ============================================================ */
:root{
  --kraft:       #C9A26D;   /* oluklu mukavva yüzeyi */
  --kraft-deep:  #A87E4B;   /* karton gölgesi */
  --paper:       #EFE7D3;   /* kraft kağıt zemini */
  --ink:         #22303F;   /* baskı mürekkebi (lacivert-siyah) */
  --ink-soft:    #4A5A6A;
  --stamp:       #B3402F;   /* "KIRILIR" damga kırmızısı */
  --white:       #FFFDF8;
  --line:        rgba(34,48,63,.18);

  --font-display:'Barlow Condensed',sans-serif;
  --font-body:   'Source Sans 3',sans-serif;
  --font-mono:   'IBM Plex Mono',monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.65;
  font-size:1.0625rem;
}
img{max-width:100%;display:block}
a{color:var(--stamp)}
:focus-visible{outline:3px solid var(--stamp);outline-offset:2px}

.container{max-width:1120px;margin:0 auto;padding:0 24px}

/* ---------- Tipografi ---------- */
h1,h2,h3{font-family:var(--font-display);text-transform:uppercase;letter-spacing:.02em;line-height:1.05;font-weight:700}
h1{font-size:clamp(2.6rem,6vw,4.5rem)}
h2{font-size:clamp(2rem,4vw,3rem)}
h3{font-size:1.5rem}
.lead{font-size:1.2rem;color:var(--ink-soft);max-width:60ch}

/* Damga etiketi — koli üstü şablon baskısı gibi */
.stamp{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:.8rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--stamp);
  border:2px dashed var(--stamp);
  padding:.3em .8em;
  transform:rotate(-1.5deg);
  margin-bottom:1rem;
  background:transparent;
}

/* Spec / ölçü satırları */
.mono{font-family:var(--font-mono);font-size:.9rem}

/* ---------- Oluklu dalga ayracı (imza öğesi) ---------- */
.flute{display:block;width:100%;height:26px;color:var(--kraft)}
.flute--ink{color:var(--ink)}

/* ---------- Üst bar + menü ---------- */
.topbar{
  background:var(--ink);color:var(--white);
  font-family:var(--font-mono);font-size:.8rem;
  padding:6px 0;letter-spacing:.06em;
}
.topbar .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.topbar a{color:var(--kraft);text-decoration:none}

header.site{
  background:var(--paper);
  border-bottom:2px solid var(--ink);
  position:sticky;top:0;z-index:50;
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:16px}
.logo{font-family:var(--font-display);font-weight:700;font-size:1.7rem;text-transform:uppercase;color:var(--ink);text-decoration:none;letter-spacing:.03em}
.logo span{color:var(--stamp)}
.menu{display:flex;gap:26px;list-style:none;align-items:center}
.menu a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.98rem}
.menu a:hover{color:var(--stamp)}
.btn{
  display:inline-block;background:var(--stamp);color:var(--white);
  font-family:var(--font-display);text-transform:uppercase;letter-spacing:.05em;
  font-size:1.1rem;font-weight:700;text-decoration:none;
  padding:.65em 1.5em;border:none;cursor:pointer;
}
.btn:hover{background:#963527}
.btn--ghost{background:transparent;color:var(--ink);border:2px solid var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--white)}
.nav-toggle{display:none;background:none;border:2px solid var(--ink);font-family:var(--font-mono);padding:.35em .7em;cursor:pointer;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{background:var(--kraft);position:relative;overflow:hidden}
.hero .container{padding-top:72px;padding-bottom:88px;position:relative;z-index:1}
.hero h1{max-width:14ch;color:var(--ink)}
.hero .lead{color:#4c3a22;margin:1.2rem 0 2rem}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-flutes{position:absolute;right:-40px;top:0;bottom:0;width:38%;opacity:.35;pointer-events:none}

/* ---------- Bölümler ---------- */
section{padding:72px 0}
.section-head{margin-bottom:40px}

.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

.card{
  background:var(--white);
  border:2px solid var(--ink);
  padding:28px;
  display:flex;flex-direction:column;gap:12px;
  box-shadow:6px 6px 0 var(--kraft-deep);
}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--stamp)}
.card .mono{color:var(--ink-soft)}
.card .more{margin-top:auto;font-weight:700;text-decoration:none;color:var(--stamp)}

/* Rakam bandı */
.band{background:var(--ink);color:var(--white)}
.band .grid-3{text-align:center}
.band strong{font-family:var(--font-display);font-size:2.6rem;display:block;color:var(--kraft)}
.band span{font-family:var(--font-mono);font-size:.85rem;letter-spacing:.1em;text-transform:uppercase}

/* Süreç */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{border-top:4px solid var(--kraft-deep);padding-top:14px}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--font-mono);color:var(--stamp);font-size:.9rem;letter-spacing:.1em;
}
.step h3{font-size:1.2rem;margin:.3rem 0}

/* Spec tablosu */
table.spec{width:100%;border-collapse:collapse;background:var(--white);border:2px solid var(--ink);font-size:.98rem}
table.spec th,table.spec td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.spec th{font-family:var(--font-mono);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);width:38%}

/* ---------- Form ---------- */
.quote{background:var(--kraft)}
.quote .card{box-shadow:8px 8px 0 var(--ink)}
form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:6px;color:var(--ink-soft)}
input,select,textarea{
  width:100%;padding:12px 14px;border:2px solid var(--ink);
  background:var(--paper);font-family:var(--font-body);font-size:1rem;color:var(--ink);
}
.field{margin-bottom:16px}
textarea{min-height:120px;resize:vertical}

/* ---------- Footer ---------- */
footer{background:var(--ink);color:var(--paper);padding:56px 0 32px}
footer h3{color:var(--kraft);font-size:1.15rem;margin-bottom:12px}
footer a{color:var(--paper);text-decoration:none}
footer a:hover{color:var(--kraft)}
footer ul{list-style:none;display:grid;gap:8px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:32px;margin-bottom:36px}
.foot-note{border-top:1px solid rgba(255,253,248,.2);padding-top:18px;font-family:var(--font-mono);font-size:.78rem;letter-spacing:.06em;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- WhatsApp yüzen buton ---------- */
.wa{
  position:fixed;right:20px;bottom:20px;z-index:90;
  width:58px;height:58px;border-radius:50%;
  background:#25D366;display:grid;place-items:center;
  box-shadow:0 4px 14px rgba(0,0,0,.3);
}
.wa svg{width:32px;height:32px;fill:#fff}

/* Breadcrumb */
.crumbs{font-family:var(--font-mono);font-size:.8rem;padding:18px 0 0;letter-spacing:.05em}
.crumbs a{color:var(--ink-soft);text-decoration:none}
.crumbs a:hover{color:var(--stamp)}

/* Ürün sayfası düzeni */
.product-hero{background:var(--kraft);padding:56px 0 64px}
.product-hero h1{max-width:18ch}
.product-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:start}

/* SSS */
details{background:var(--white);border:2px solid var(--ink);margin-bottom:12px}
summary{cursor:pointer;font-weight:700;padding:16px 20px;font-family:var(--font-display);text-transform:uppercase;font-size:1.05rem;letter-spacing:.02em}
details p{padding:0 20px 16px;color:var(--ink-soft)}

/* ---------- Duyarlılık ---------- */
@media (max-width:900px){
  .grid-3,.steps{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .product-grid{grid-template-columns:1fr}
  .hero-flutes{display:none}
}
@media (max-width:640px){
  .grid-3,.grid-2,.steps,form .row{grid-template-columns:1fr}
  .menu{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--paper);border-bottom:2px solid var(--ink);
    flex-direction:column;padding:18px 24px;gap:16px;align-items:flex-start;
  }
  .menu.open{display:flex}
  .nav-toggle{display:block}
  .foot-grid{grid-template-columns:1fr}
  section{padding:52px 0}
}