/* ===========================================================
   DELFI MADENCİLİK — stylesheet
   Palette:  graphite #1B211F · turquoise #14A897 · deep teal #0B6E63
             sage #8CA792 · paper #F5F2EA · stone #E9E4D8 · ink #2B2A26
   Type:     Space Grotesk (display) / Inter (body)
   =========================================================== */

:root{
  --graphite:#1B211F;
  --turquoise:#14A897;
  --teal-deep:#0B6E63;
  --sage:#8CA792;
  --paper:#F5F2EA;
  --stone:#EAE5D8;
  --ink:#26241F;
  --ink-soft:#5B584F;
  --line: rgba(27,33,31,.14);
  --line-light: rgba(245,242,234,.22);
  --radius: 2px;
  --max: 1240px;
  --gutter: clamp(24px, 5vw, 72px);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }

h1,h2,h3,h4{
  font-family:'Space Grotesk','Inter',sans-serif;
  font-weight:600;
  line-height:1.08;
  margin:0;
  color:var(--graphite);
  letter-spacing:-0.01em;
}

a{ color:inherit; text-decoration:none; }

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

p{ margin:0 0 1em; max-width:62ch; color:var(--ink-soft); }
p:last-child{ margin-bottom:0; }

::selection{ background:var(--turquoise); color:#fff; }

/* Focus visibility */
a:focus-visible, button:focus-visible{
  outline:2px solid var(--turquoise);
  outline-offset:3px;
}

/* ---------- Header ---------- */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  padding:12px 0;
  transition:background .35s ease, padding .35s ease, box-shadow .35s ease;
}
.site-header .wrap{ display:flex; align-items:center; justify-content:space-between; }
.site-header.solid{
  background:rgba(245,242,234,.94);
  backdrop-filter:blur(8px);
  padding:6px 0;
  box-shadow:0 1px 0 var(--line);
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand img{ height:102px; width:auto; }
.brand-word{ display:none; }

.site-header nav{ display:flex; align-items:center; gap:clamp(14px,2.4vw,34px); }
.site-header nav a{
  font-size:13px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--paper);
  font-weight:500;
  position:relative;
  padding:4px 0;
}
.site-header.solid nav a{ color:var(--graphite); }
.site-header nav a::after{
  content:'';
  position:absolute; left:0; right:100%; bottom:-2px; height:1.5px;
  background:var(--turquoise);
  transition:right .25s ease;
}
.site-header nav a:hover::after,
.site-header nav a[aria-current="page"]::after{ right:0; }
.site-header nav a[aria-current="page"]{ color:var(--turquoise); }
.site-header.solid nav a[aria-current="page"]{ color:var(--teal-deep); }

.nav-cta{
  border:1px solid var(--line-light) !important;
  padding:9px 18px !important;
  border-radius:var(--radius);
}
.site-header.solid .nav-cta{ border-color:var(--graphite) !important; }
.nav-cta:hover{ background:var(--turquoise); border-color:var(--turquoise) !important; color:#fff !important; }
.nav-cta::after{ display:none; }

.nav-toggle{
  display:none;
  background:none; border:0; cursor:pointer; padding:8px;
  color:var(--paper);
}
.site-header.solid .nav-toggle{ color:var(--graphite); }

/* ---------- Language switch ---------- */
.lang-switch{
  display:flex; align-items:center; gap:2px;
  margin-left:6px; padding-left:16px;
  border-left:1px solid var(--line-light);
}
.site-header.solid .lang-switch{ border-left-color:var(--line); }
.site-header nav .lang-switch a{
  font-family:'Space Grotesk',sans-serif;
  font-size:12px; font-weight:600; letter-spacing:.04em;
  text-transform:uppercase;
  color:rgba(245,242,234,.6);
  padding:6px 8px;
  border-radius:var(--radius);
  transition:color .2s ease, background .2s ease;
}
.site-header nav .lang-switch a::after{ display:none; }
.site-header.solid nav .lang-switch a{ color:var(--ink-soft); }
.site-header nav .lang-switch a:hover{ color:#fff; }
.site-header.solid nav .lang-switch a:hover{ color:var(--graphite); }
.site-header nav .lang-switch a.lang-current{ color:var(--turquoise); background:rgba(245,242,234,.08); }
.site-header.solid nav .lang-switch a.lang-current{ color:var(--teal-deep); background:rgba(20,168,151,.08); }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:'Space Grotesk',sans-serif;
  font-size:14px; font-weight:600; letter-spacing:.02em;
  padding:14px 26px;
  border-radius:var(--radius);
  border:1px solid var(--graphite);
  color:var(--graphite);
  background:transparent;
  cursor:pointer;
  transition:background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.btn:hover{ background:var(--graphite); color:var(--paper); }
.btn-solid{ background:var(--turquoise); border-color:var(--turquoise); color:#fff; }
.btn-solid:hover{ background:var(--teal-deep); border-color:var(--teal-deep); }
.btn-ghost-light{ border-color:rgba(245,242,234,.55); color:var(--paper); }
.btn-ghost-light:hover{ background:var(--paper); color:var(--graphite); }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:flex-end;
  color:var(--paper);
  overflow:hidden;
}
.hero-media{
  position:absolute; inset:0; z-index:0;
}
.hero-media img{
  width:100%; height:100%; object-fit:cover;
  transform:scale(1.06);
  animation:heroZoom 16s ease-out forwards;
}
@keyframes heroZoom{ to{ transform:scale(1); } }
.hero::after{
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(20,25,23,.35) 0%, rgba(18,22,20,.35) 40%, rgba(14,17,16,.86) 100%);
  z-index:1;
}
.hero-content{
  position:relative; z-index:2;
  padding:0 var(--gutter) 88px;
  width:100%;
  max-width:var(--max);
  margin:0 auto;
}
.eyebrow{
  font-family:'Space Grotesk',sans-serif;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--turquoise);
  margin-bottom:18px;
  display:block;
}
.hero h1{
  color:#fff;
  font-size:clamp(2.4rem, 5.4vw, 4.6rem);
  max-width:15ch;
  margin-bottom:22px;
}
.hero .lede{
  color:rgba(245,242,234,.86);
  font-size:clamp(1.05rem,1.6vw,1.25rem);
  max-width:46ch;
  margin-bottom:36px;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

.page-hero{
  min-height:56vh;
  padding-top:180px;
}
.page-hero .hero-content{ padding-bottom:64px; }
.page-hero h1{ font-size:clamp(2.1rem,4.6vw,3.6rem); }

/* ---------- Sections ---------- */
section{ padding:clamp(64px,9vw,120px) 0; }
.section-stone{ background:var(--stone); }
.section-dark{ background:var(--graphite); color:var(--paper); }
.section-dark h2, .section-dark h3{ color:var(--paper); }
.section-dark p{ color:rgba(245,242,234,.72); }

.section-head{
  display:flex; justify-content:space-between; align-items:flex-end; gap:32px;
  margin-bottom:52px; flex-wrap:wrap;
}
.section-head h2{ font-size:clamp(1.7rem,3vw,2.5rem); max-width:16ch; }
.section-head .section-note{ max-width:34ch; margin-bottom:0; }
.section-tag{
  font-family:'Space Grotesk',sans-serif;
  font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--teal-deep); margin-bottom:14px; display:block;
}
.section-dark .section-tag{ color:var(--turquoise); }

/* ---------- Split layout ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(32px,6vw,90px);
  align-items:center;
}
.split.reverse .split-media{ order:2; }
.split-media img{ width:100%; height:100%; object-fit:cover; aspect-ratio:4/5; }
.split-text p{ max-width:48ch; }

/* ---------- Cards / grid ---------- */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:2px; background:var(--line); }
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:2px; background:var(--line); }

.category-card{
  position:relative;
  background:var(--graphite);
  aspect-ratio:4/5;
  overflow:hidden;
  display:flex; align-items:flex-end;
  padding:30px;
}
.category-card img{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  opacity:.62; transition:transform .6s ease, opacity .4s ease;
}
.category-card:hover img{ transform:scale(1.06); opacity:.72; }
.category-card::before{
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(27,33,31,.05) 30%, rgba(15,18,17,.92) 100%);
}
.category-card-body{ position:relative; z-index:2; color:#fff; }
.category-card-body .kicker{
  font-family:'Space Grotesk',sans-serif; font-size:11.5px; letter-spacing:.12em;
  text-transform:uppercase; color:var(--turquoise); display:block; margin-bottom:10px;
}
.category-card-body h3{ color:#fff; font-size:1.5rem; margin-bottom:10px; }
.category-card-body p{ color:rgba(255,255,255,.78); font-size:.94rem; margin-bottom:14px; }
.category-card-body .card-link{
  font-family:'Space Grotesk',sans-serif; font-size:13px; font-weight:600;
  color:#fff; border-bottom:1px solid var(--turquoise); padding-bottom:2px;
}

/* Mineral swatch grid */
.mineral-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:2px; background:var(--line); }
.mineral-card{
  background:var(--paper); padding:28px 26px 26px;
  display:flex; flex-direction:column; gap:16px;
}
.mineral-thumb{
  aspect-ratio:1/1; overflow:hidden; background:var(--stone);
}
.mineral-thumb img{ width:100%; height:100%; object-fit:cover; }
.mineral-thumb.texture{
  display:flex; align-items:center; justify-content:center;
  background:linear-gradient(135deg, var(--stone), #DED7C4);
}
.mineral-thumb.texture span{
  font-family:'Space Grotesk',sans-serif; font-size:11px; letter-spacing:.1em;
  color:var(--ink-soft); text-transform:uppercase;
}
.mineral-card h4{ font-size:1.05rem; }
.mineral-card p{ font-size:.92rem; margin:0; }

/* ---------- Timeline (mine to market — genuine sequence) ---------- */
.timeline{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:1px;
  background:var(--line-light);
  margin-top:52px;
}
.timeline-step{
  background:var(--graphite);
  padding:30px 22px;
  position:relative;
}
.timeline-step .num{
  font-family:'Space Grotesk',sans-serif;
  font-size:.78rem; color:var(--turquoise); letter-spacing:.08em;
  display:block; margin-bottom:20px;
}
.timeline-step h4{ color:#fff; font-size:1rem; margin-bottom:8px; }
.timeline-step p{ color:rgba(245,242,234,.66); font-size:.86rem; margin:0; }
.timeline-step:not(:last-child)::after{
  content:'';
  position:absolute; right:0; top:30px; bottom:30px; width:1px;
  background:rgba(245,242,234,.14);
}

/* ---------- Global presence ---------- */
.presence-wrap{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:clamp(32px,6vw,80px);
  align-items:center;
}
.region-list{ display:flex; flex-direction:column; gap:0; }
.region-row{
  display:grid; grid-template-columns:150px 1fr;
  gap:24px;
  padding:22px 0;
  border-top:1px solid var(--line-light);
}
.region-row:last-child{ border-bottom:1px solid var(--line-light); }
.region-row .region-name{
  font-family:'Space Grotesk',sans-serif; font-size:13px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--turquoise);
}
.region-row .countries{ color:rgba(245,242,234,.82); font-size:1.02rem; }
.presence-media{ position:relative; }
.presence-media img{ width:100%; aspect-ratio:4/5; object-fit:cover; }

/* ---------- Approach blocks ---------- */
.approach-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--line); margin-top:8px;
}
.approach-block{ background:var(--paper); padding:34px 26px; }
.approach-block .idx{
  font-family:'Space Grotesk',sans-serif; font-size:12px; color:var(--turquoise);
  letter-spacing:.1em; display:block; margin-bottom:18px;
}
.approach-block h4{ font-size:1.08rem; margin-bottom:10px; }
.approach-block p{ font-size:.92rem; }

/* ---------- CTA band ---------- */
.cta-band{
  position:relative; color:#fff; min-height:56vh;
  display:flex; align-items:center;
}
.cta-band .hero-media img{ animation:none; transform:none; }
.cta-band::after{
  content:''; position:absolute; inset:0;
  background:linear-gradient(90deg, rgba(14,17,16,.92) 10%, rgba(14,17,16,.35) 80%);
}
.cta-band .wrap{ position:relative; z-index:2; }
.cta-band h2{ color:#fff; font-size:clamp(1.9rem,3.6vw,3rem); max-width:14ch; margin-bottom:20px; }
.cta-band p{ color:rgba(245,242,234,.78); margin-bottom:30px; }

/* ---------- Applications rows ---------- */
.app-row{
  display:grid; grid-template-columns:.9fr 1.1fr; gap:clamp(28px,5vw,72px);
  align-items:center; padding:56px 0; border-top:1px solid var(--line);
}
.app-row:first-of-type{ border-top:none; }
.app-row.reverse{ direction:rtl; }
.app-row.reverse > *{ direction:ltr; }
.app-media{ aspect-ratio:5/4; overflow:hidden; }
.app-media img{ width:100%; height:100%; object-fit:cover; }
.app-tags{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:18px; }
.app-tags span{
  font-size:12px; letter-spacing:.04em; padding:6px 12px;
  border:1px solid var(--line); border-radius:20px; color:var(--ink-soft);
}
.app-text h3{ font-size:1.8rem; margin-bottom:14px; }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,6vw,90px); }
.contact-card{ padding:40px; background:var(--stone); }
.contact-line{ display:flex; flex-direction:column; gap:4px; padding:18px 0; border-top:1px solid var(--line); }
.contact-line:first-child{ border-top:none; }
.contact-line .label{ font-family:'Space Grotesk',sans-serif; font-size:12px; letter-spacing:.1em; text-transform:uppercase; color:var(--teal-deep); }
.contact-line a, .contact-line span.value{ font-size:1.05rem; color:var(--ink); }
.contact-line a:hover{ color:var(--turquoise); }
.map-frame{ width:100%; aspect-ratio:4/3; border:0; filter:grayscale(.25) contrast(1.02); }

form.contact-form{ display:flex; flex-direction:column; gap:18px; }
.field label{
  display:block; font-family:'Space Grotesk',sans-serif; font-size:12.5px;
  letter-spacing:.08em; text-transform:uppercase; color:var(--ink-soft); margin-bottom:8px;
}
.field input, .field textarea{
  width:100%; border:1px solid var(--line); background:var(--paper);
  padding:13px 14px; font-family:'Inter',sans-serif; font-size:15px; color:var(--ink);
  border-radius:var(--radius);
}
.field input:focus, .field textarea:focus{ outline:none; border-color:var(--turquoise); }
.field textarea{ resize:vertical; min-height:130px; }

/* ---------- Footer ---------- */
footer{ background:var(--graphite); color:rgba(245,242,234,.7); padding:64px 0 32px; }
.footer-top{
  display:grid; grid-template-columns:1.3fr 1fr 1fr 1fr; gap:40px;
  padding-bottom:44px; border-bottom:1px solid rgba(245,242,234,.12);
}
.footer-brand img{ height:108px; margin-bottom:16px; }
.footer-brand p{ color:rgba(245,242,234,.6); font-size:.92rem; max-width:32ch; }
.footer-col h5{
  font-family:'Space Grotesk',sans-serif; font-size:12.5px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--paper); margin-bottom:16px; font-weight:600;
}
.footer-col a, .footer-col span{ display:block; color:rgba(245,242,234,.65); font-size:.92rem; padding:5px 0; }
.footer-col a:hover{ color:var(--turquoise); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:26px; font-size:.82rem; color:rgba(245,242,234,.45); flex-wrap:wrap; gap:10px;
}

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .split, .presence-wrap, .contact-grid, .app-row{ grid-template-columns:1fr; }
  .split.reverse .split-media{ order:0; }
  .app-row.reverse{ direction:ltr; }
  .grid-3, .mineral-grid, .approach-grid{ grid-template-columns:repeat(2,1fr); }
  .timeline{ grid-template-columns:repeat(2,1fr); }
  .timeline-step:nth-child(2n)::after{ display:none; }
  .footer-top{ grid-template-columns:1fr 1fr; row-gap:32px; }
}

@media (max-width: 720px){
  .site-header nav{
    position:fixed; inset:0 0 0 auto; width:78%; max-width:340px;
    background:var(--graphite); flex-direction:column; align-items:flex-start;
    padding:100px 32px 32px; gap:22px;
    transform:translateX(100%); transition:transform .35s ease;
  }
  .site-header nav.open{ transform:translateX(0); }
  .site-header nav a{ color:var(--paper) !important; font-size:15px; }
  .nav-toggle{ display:block; z-index:110; }
  .nav-cta{ order:99; margin-top:10px; }
  .lang-switch{
    order:100; margin-left:0; margin-top:14px; padding-left:0;
    border-left:none; border-top:1px solid rgba(245,242,234,.2);
    padding-top:14px; width:100%;
  }
  .grid-3, .mineral-grid, .approach-grid{ grid-template-columns:1fr; }
  .timeline{ grid-template-columns:1fr; }
  .timeline-step:not(:last-child)::after{ display:none; }
  .region-row{ grid-template-columns:1fr; gap:6px; }
  .footer-top{ grid-template-columns:1fr; }
}