/* ═══════════════════════════════════════════════════════════
   ElfAi — "STAGE"  ·  Apple ürün sayfası çizgisi
   Görsel ağırlıklı. Her ürün tam genişlik bir sahne alır,
   dönüşümlü sol/sağ yerleşim, çok geniş boşluk, sakin
   ama büyük tipografi.
   ═══════════════════════════════════════════════════════════ */

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

:root {
  --bg:        #FFFFFF;
  --bg-alt:    #F5F5F7;
  --bg-deep:   #EDEDF0;
  --line:      #E3E3E6;
  --fg:        #1D1D1F;
  --fg-2:      #56565B;
  --fg-3:      #86868B;
  --link:      #1A5FB4;
  --accent:    #F0562F;
  --brand-navy: #1A3A6B;   /* logodaki lacivert */
  --radius:    20px;
  --radius-lg: 30px;
  --max:       1180px;
  --ease: cubic-bezier(.28,.11,.32,1);
}

html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  font-size:17px; line-height:1.55; color:var(--fg); background:var(--bg);
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; }

.shell { max-width:var(--max); margin:0 auto; padding:0 28px; position:relative; }

h1 { font-size:clamp(42px,6.2vw,78px); font-weight:600; letter-spacing:-.028em; line-height:1.06; }
h2 { font-size:clamp(30px,3.8vw,46px); font-weight:600; letter-spacing:-.022em; line-height:1.12; }
h3 { font-size:21px; font-weight:600; letter-spacing:-.012em; }
h4 { font-size:12px; font-weight:600; letter-spacing:.06em; text-transform:uppercase; color:var(--fg-3); }
.lede { font-size:21px; color:var(--fg-2); line-height:1.5; }
.dim  { color:var(--fg-3); }

/* ── Butonlar: Apple hapı ── */
.btn {
  display:inline-flex; align-items:center; gap:7px;
  height:46px; padding:0 24px;
  font-size:16px; font-weight:500;
  border-radius:999px; border:1px solid transparent;
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.btn-primary { background:var(--link); color:#fff; }
.btn-primary:hover { background:#14508F; }
.btn-secondary { background:transparent; color:var(--link); border-color:rgba(26,95,180,.35); }
.btn-secondary:hover { background:rgba(26,95,180,.07); border-color:var(--link); }

/* ═══════════ NAV ═══════════ */
.nav {
  position:sticky; top:0; z-index:60; height:76px;
  background:rgba(255,255,255,.78);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,.07);
}
.nav-inner { max-width:var(--max); height:100%; margin:0 auto; padding:0 28px; display:flex; align-items:center; gap:34px; }
.brand { display:flex; align-items:center; gap:9px; }
.brand-mark { width:auto; height:48px; }
.brand-name { font-size:32px; font-weight:600; letter-spacing:-.03em; color:var(--brand-navy); }
.brand-name .ai { color:var(--accent); }
.nav-links { display:flex; align-items:center; gap:30px; margin-left:16px; }
.nav-links a { font-size:13px; font-weight:400; color:var(--fg-2); transition:color .2s var(--ease); }
.nav-links a:hover { color:var(--fg); }
.nav-right { margin-left:auto; display:flex; align-items:center; gap:10px; }
.lang {
  appearance:none; -webkit-appearance:none;
  height:28px; padding:0 24px 0 10px; font:inherit; font-size:12px; font-weight:500; color:var(--fg-2);
  background:transparent url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'><path d='M2 4l3 3 3-3' fill='none' stroke='%2386868B' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat right 8px center;
  border:1px solid var(--line); border-radius:999px; cursor:pointer; outline:none;
}
.nav-toggle { display:none; width:30px; height:30px; align-items:center; justify-content:center; background:none; border:none; color:var(--fg); cursor:pointer; }

/* ═══════════ HERO — tek büyük sahne ═══════════ */
.hero { padding-block:86px 0; text-align:center; }
.hero-bg {
  position:absolute; left:50%; top:-50px; width:100vw; height:560px;
  transform:translateX(-50%); pointer-events:none; z-index:0;
  background:radial-gradient(46% 62% at 50% 0%, rgba(26,95,180,.075) 0%, transparent 70%);
}
.hero-wrap { max-width:840px; margin:0 auto; position:relative; }
.pill {
  display:inline-flex; align-items:center; gap:8px;
  font-size:16px; font-weight:500; color:var(--link);
  margin-bottom:16px;
}
.pill .dot { width:6px; height:6px; border-radius:50%; background:var(--accent); }
.hero h1 { margin-bottom:20px; }
.hero .lede { max-width:640px; margin:0 auto 32px; }
.hero-actions { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* vitrin: tam genişlik, büyük cihazlar */
.showcase {
  margin-top:76px; padding:0 0 0; background:transparent; border:none; overflow:visible;
  position:relative;
}
.showcase-row {
  display:grid; grid-template-columns:repeat(4,1fr); gap:26px;
  align-items:end; max-width:1000px; margin:0 auto;
}
.device {
  border-radius:26px; overflow:hidden; background:#111;
  box-shadow:0 2px 6px rgba(0,0,0,.08), 0 30px 60px rgba(0,0,0,.16);
  border:5px solid #1D1D1F;
}
.device img { width:100%; display:block; }
.device:nth-child(1), .device:nth-child(4) { transform:scale(.9) translateY(14px); }
.device:nth-child(2), .device:nth-child(3) { position:relative; z-index:1; }

/* ═══════════ BÖLÜMLER ═══════════ */
.section { padding-block:110px; }
#products { padding-block:110px 0; }
.section-head { max-width:720px; margin:0 auto 20px; text-align:center; }
.section-head h2 { margin-bottom:14px; }
.section-head p { color:var(--fg-2); font-size:19px; }

/* ═══════════ ÜRÜNLER — dönüşümlü tam sahneler ═══════════ */
.cards { display:flex; flex-direction:column; gap:0; }
.card {
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  grid-template-rows:auto auto;
  align-items:center; column-gap:70px;
  padding-block:96px;
  border:none; border-radius:0; background:transparent;
  position:relative;
}
.card + .card::before {
  content:''; position:absolute; top:0; left:50%; transform:translateX(-50%);
  width:100vw; max-width:none; height:1px; background:var(--line);
}
/* dönüşümlü zemin */
.card:nth-child(even)::after {
  content:''; position:absolute; inset:0; left:50%; transform:translateX(-50%);
  width:100vw; background:var(--bg-alt); z-index:-1;
}
.card > * { position:relative; z-index:1; }

.card-visual {
  grid-column:2; grid-row:1 / span 2;
  display:flex; align-items:center; justify-content:center;
  min-height:480px; border:none; background:transparent; aspect-ratio:auto;
}
.card-body { grid-column:1; grid-row:1; align-self:end; padding:0 0 4px; }
.card-foot  { grid-column:1; grid-row:2; align-self:start; padding:22px 0 0; border:none; display:flex; align-items:center; gap:20px; }

.card:nth-child(even) .card-visual { grid-column:1; }
.card:nth-child(even) .card-body,
.card:nth-child(even) .card-foot { grid-column:2; }

.card-visual .shot {
  width:250px; border-radius:30px; border:5px solid #1D1D1F;
  box-shadow:0 3px 8px rgba(0,0,0,.08), 0 34px 70px rgba(0,0,0,.18);
  transition:transform .5s var(--ease);
}
.card:hover .card-visual .shot { transform:translateY(-10px); }
.card-visual--mark img {
  width:190px; height:190px; border-radius:44px;
  box-shadow:0 3px 8px rgba(0,0,0,.08), 0 30px 60px rgba(0,0,0,.16);
  transition:transform .5s var(--ease);
}
.card:hover .card-visual--mark img { transform:translateY(-8px); }

.card-head { display:flex; align-items:center; gap:14px; margin-bottom:16px; }
.card-icon { width:52px; height:52px; border-radius:13px; flex-shrink:0; box-shadow:0 4px 14px rgba(0,0,0,.10); }
.card-name { font-size:34px; font-weight:600; letter-spacing:-.025em; line-height:1.1; }
.chip {
  margin-left:8px; font-size:12px; font-weight:600; letter-spacing:.02em;
  color:var(--fg-3); background:var(--bg-deep); border-radius:999px; padding:5px 12px; white-space:nowrap;
}
.card-tag { font-size:13px; font-weight:600; letter-spacing:.09em; text-transform:uppercase; color:var(--fg-3); margin-bottom:16px; }
.card-body p { font-size:19px; line-height:1.55; color:var(--fg-2); max-width:490px; }

.card-link { display:inline-flex; align-items:center; gap:6px; font-size:17px; font-weight:500; color:var(--link); }
.card-link svg { width:15px; height:15px; transition:transform .2s var(--ease); }
.card:hover .card-link svg { transform:translateX(4px); }
.stores { display:flex; align-items:center; gap:10px; }
.stores img { height:36px; width:auto; }
.card--soon .card-visual { opacity:.9; }

/* ═══════════ İLKELER ═══════════ */
.pillars { display:grid; grid-template-columns:repeat(3,1fr); gap:0; border:none; }
.pillar { padding:0 34px; text-align:center; border:none; }
.pillar + .pillar { border-left:1px solid var(--line); }
.pillar-icon {
  width:64px; height:64px; border-radius:50%; background:var(--bg-alt);
  display:flex; align-items:center; justify-content:center; margin:0 auto 22px; border:none;
}
.pillar-icon svg { width:26px; height:26px; stroke:var(--fg-2); }
.pillar h3 { margin-bottom:10px; }
.pillar p { font-size:16px; color:var(--fg-2); line-height:1.6; }

/* ═══════════ MİSYON ═══════════ */
.mission {
  display:block; text-align:center; max-width:860px; margin:0 auto;
  background:transparent; border:none; padding:0;
}
.mission h2 { font-size:clamp(32px,4.4vw,56px); margin-bottom:28px; }
.mission-text p { font-size:20px; color:var(--fg-2); line-height:1.6; }
.mission-text p + p { margin-top:22px; }

/* ═══════════ CTA ═══════════ */
.cta { padding-block:130px; text-align:center; background:transparent; border:none; position:relative; }
.cta::before {
  content:''; position:absolute; inset:0; left:50%; transform:translateX(-50%);
  width:100vw; background:var(--bg-alt); z-index:-1;
}
.cta h2 { font-size:clamp(32px,4.6vw,58px); margin-bottom:16px; }
.cta p { color:var(--fg-2); font-size:20px; max-width:520px; margin:0 auto 32px; }

/* ═══════════ FOOTER ═══════════ */
.footer { background:var(--bg); border-top:1px solid var(--line); padding-block:56px 26px; font-size:14px; }
.footer-grid { display:grid; grid-template-columns:1.7fr 1fr 1fr 1fr; gap:38px; }
.footer-brand .brand { margin-bottom:14px; }
.footer-brand .brand-mark { height:48px; }
.footer-brand .brand-name { font-size:32px; }
.footer-brand p { font-size:14px; color:var(--fg-3); max-width:280px; line-height:1.6; }
.footer-col h4 { margin-bottom:13px; font-size:12px; }
.footer-col a { display:block; font-size:14px; color:var(--fg-2); padding:5px 0; }
.footer-col a:hover { color:var(--link); text-decoration:underline; }
.footer-bottom { margin-top:40px; padding-top:18px; border-top:1px solid var(--line); display:flex; align-items:center; justify-content:space-between; gap:16px; }
.footer-bottom p { font-size:13px; color:var(--fg-3); }
.socials { display:flex; gap:14px; }
.socials a { color:var(--fg-3); }
.socials a:hover { color:var(--fg); }
.socials svg { width:17px; height:17px; }

.reveal { opacity:0; transform:translateY(24px); transition:opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.visible { opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){ .reveal{opacity:1;transform:none;transition:none} html{scroll-behavior:auto} }

/* ═══════════ Responsive ═══════════ */
@media (max-width:1000px) {
  .card { grid-template-columns:1fr; row-gap:34px; text-align:center; padding-block:76px; }
  .card-visual, .card:nth-child(even) .card-visual { grid-column:1; grid-row:1; min-height:0; }
  .card-body, .card-foot, .card:nth-child(even) .card-body, .card:nth-child(even) .card-foot { grid-column:1; }
  .card-body { grid-row:2; } .card-foot { grid-row:3; justify-content:center; }
  .card-head { justify-content:center; }
  .card-body p { margin:0 auto; }
  .pillars { grid-template-columns:1fr; gap:44px; }
  .pillar + .pillar { border-left:none; }
  .footer-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width:720px) {
  .nav-inner { padding:0 20px; }
  .nav-links {
    display:none; position:absolute; top:76px; left:0; right:0;
    flex-direction:column; align-items:stretch; gap:0;
    background:rgba(255,255,255,.98); backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line); padding:4px 20px 12px; margin:0;
  }
  .nav-links.open { display:flex; }
  .nav-links a { padding:12px 0; border-top:1px solid var(--line); font-size:16px; }
  .nav-toggle { display:flex; }
  .shell { padding:0 20px; }
  .hero { padding-block:52px 0; }
  .showcase-row { grid-template-columns:repeat(2,1fr); gap:16px; max-width:400px; }
  .showcase-row .device:nth-child(n+3) { display:none; }
  .device:nth-child(1) { transform:none; }
  .section, .cta { padding-block:64px; }
  .card-visual .shot { width:200px; }
  .card-name { font-size:26px; }
  .card-body p { font-size:17px; }
  .footer-grid { grid-template-columns:1fr; }
  .footer-bottom { flex-direction:column; align-items:flex-start; }
}