/* ─────────────────────────────────────────────────────────
   hasanaker.com — Apple zarafeti + kurumsal derinlik
   ───────────────────────────────────────────────────────── */

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

:root {
  --bg: #ffffff;
  --paper: #fbfbfd;
  --paper-2: #f5f5f7;
  --ink: #1d1d1f;
  --ink-2: #2c2c2e;
  --text: #424245;
  --dim: #6e6e73;
  --muted: #86868b;
  --line: #d2d2d7;
  --line-soft: #e5e5e7;
  --accent: #0066cc;   /* Apple blue, yalnızca link hover */
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01";
  letter-spacing: -0.005em;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 44px;
}
.container-narrow { max-width: 720px; margin: 0 auto; padding: 0 32px; }

@media (max-width: 768px) {
  .container, .container-narrow { padding: 0 22px; }
  body { font-size: 16px; }
}

/* ========== TYPE ========== */

.kicker {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

h1.display {
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.02;
  color: var(--ink);
}
h1.display em { font-style: normal; font-weight: 500; color: var(--muted); }

h2.h1 {
  font-size: clamp(40px, 5.5vw, 68px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink);
}
h2.h2 {
  font-size: clamp(28px, 3.8vw, 44px);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--ink);
}
h3.h3 {
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 600;
  letter-spacing: -0.018em;
  line-height: 1.2;
  color: var(--ink);
}

.lead {
  font-size: clamp(18px, 1.7vw, 22px);
  line-height: 1.5;
  color: var(--ink-2);
}

.body-lg {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text);
}

/* ========== NAV ========== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled { border-bottom-color: var(--line-soft); }
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.nav-brand {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.015em;
}
.nav-links {
  display: flex;
  gap: 32px;
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-2);
}
.nav-links a { transition: opacity 0.15s; padding: 4px 0; }
.nav-links a:hover { opacity: 0.6; }
.nav-links a.active { color: var(--muted); }

.nav-cta {
  background: var(--ink);
  color: #fff;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--ink-2); }

.nav-toggle { display: none; background: transparent; border: 0; width: 36px; height: 36px; position: relative; cursor: pointer; }
.nav-toggle span { position: absolute; left: 8px; right: 8px; height: 1.5px; background: var(--ink); transition: transform 0.3s; }
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { bottom: 14px; }

@media (max-width: 900px) {
  .nav-inner { padding: 12px 22px; }
  .nav-links {
    display: none;
    position: fixed; inset: 54px 0 0 0;
    background: var(--bg); flex-direction: column; align-items: center;
    padding-top: 60px; gap: 24px; font-size: 22px;
  }
  .nav-links.open { display: flex; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; z-index: 101; }
  .nav-toggle.open span:nth-child(1) { top: 18px; transform: rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { bottom: 16px; transform: rotate(-45deg); }
}

/* ========== BUTTONS ========== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: all 0.2s;
  cursor: pointer;
  border: 0;
  white-space: nowrap;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--ink-2); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { background: var(--paper); border-color: var(--ink); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--ink);
  font-weight: 500;
  font-size: 15px;
  transition: gap 0.2s;
}
.link-arrow:hover { gap: 10px; }

/* ========== HERO ========== */

.hero {
  padding: 60px 0 96px;
  border-bottom: 1px solid var(--line-soft);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: center;
}
@media(max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 48px; } }

.hero-text .kicker { margin-bottom: 24px; }
.hero-text h1 { margin-bottom: 28px; }
.hero-text .lead { margin-bottom: 36px; max-width: 560px; }
.hero-ctas { display: flex; gap: 10px; flex-wrap: wrap; }

.hero-meta {
  display: flex;
  gap: 28px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--muted);
}
.hero-meta span { display: flex; flex-direction: column; gap: 2px; }
.hero-meta b { color: var(--ink); font-weight: 500; font-size: 15px; }

.portrait {
  width: 100%;
  aspect-ratio: 4/5;
  border-radius: 16px;
  overflow: hidden;
  background: var(--paper-2);
  box-shadow: 0 24px 60px -24px rgba(0,0,0,0.18);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; object-position: center 15%; }

/* ========== OFFER GRID (ne yapıyorum — 3 kart) ========== */

.offers {
  padding: 96px 0;
  border-bottom: 1px solid var(--line-soft);
}
.offers-head {
  max-width: 720px;
  margin: 0 auto 56px;
  text-align: center;
}
.offers-head .kicker { margin-bottom: 16px; }
.offers-head p { margin-top: 16px; color: var(--dim); font-size: 17px; }

.offers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media(max-width:900px){.offers-grid{grid-template-columns:1fr;}}

.offer-card {
  padding: 36px 30px 32px;
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  background: var(--bg);
  transition: box-shadow 0.25s, transform 0.25s;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 360px;
}
.offer-card:hover { box-shadow: 0 24px 60px -24px rgba(0,0,0,0.15); transform: translateY(-3px); }
.offer-card.featured { background: var(--ink); color: #fff; border-color: var(--ink); }
.offer-card.featured h3 { color: #fff; }
.offer-card.featured .offer-desc { color: #a1a1a6; }
.offer-card.featured .offer-meta { color: #86868b; }
.offer-card.featured .link-arrow { color: #fff; }

.offer-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}
.offer-card.featured .offer-tag { color: #a1a1a6; }

.offer-card h3 { margin-bottom: 10px; font-size: 24px; font-weight: 600; letter-spacing: -0.02em; color: var(--ink); }
.offer-desc { font-size: 15px; line-height: 1.55; color: var(--dim); margin-bottom: 24px; flex: 1; }
.offer-meta { display: flex; gap: 16px; margin-bottom: 28px; font-size: 12px; color: var(--muted); }
.offer-meta b { color: var(--ink); font-weight: 500; }
.offer-card.featured .offer-meta b { color: #fff; }

/* ========== FEATURED PROGRAM (Yapay Zekâ Okulu — büyük blok) ========== */

.featured-program {
  padding: 120px 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line-soft);
}
.fp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
@media(max-width: 900px) { .fp-grid { grid-template-columns: 1fr; gap: 48px; } }

.fp-left .kicker { margin-bottom: 16px; display: block; }
.fp-left h2 { margin-bottom: 24px; }
.fp-left .lead { margin-bottom: 32px; color: var(--text); }
.fp-price {
  margin: 32px 0 28px;
  padding: 20px 24px;
  background: var(--bg);
  border-radius: 14px;
  display: flex;
  align-items: baseline;
  gap: 16px;
  border: 1px solid var(--line-soft);
}
.fp-price .now { font-size: 32px; font-weight: 600; color: var(--ink); letter-spacing: -0.025em; line-height: 1; }
.fp-price .old { font-size: 16px; color: var(--muted); text-decoration: line-through; }
.fp-price .note { font-size: 13px; color: var(--dim); margin-left: auto; }

.fp-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  background: var(--bg);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
}
.fp-stat { padding: 28px 24px; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.fp-stat:nth-child(2n) { border-right: 0; }
.fp-stat:nth-last-child(-n+2) { border-bottom: 0; }
.fp-stat .s { font-size: clamp(32px, 3.5vw, 44px); font-weight: 600; letter-spacing: -0.03em; line-height: 1; color: var(--ink); }
.fp-stat .l { font-size: 13px; color: var(--muted); margin-top: 8px; letter-spacing: -0.005em; }

/* ========== VIDEO SERIES ========== */

.videos {
  padding: 96px 0;
  border-bottom: 1px solid var(--line-soft);
}
.videos-head {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  gap: 32px;
  align-items: end;
  margin-bottom: 48px;
}
@media(max-width:860px){.videos-head{grid-template-columns:1fr;gap:16px;}}
.videos-head .kicker { display: block; margin-bottom: 12px; }
.videos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media(max-width:900px){.videos-grid{grid-template-columns:1fr;}}
.video-card {
  background: var(--paper);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.25s;
  cursor: pointer;
}
.video-card:hover { transform: translateY(-3px); }
.video-thumb {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #1d1d1f, #3a3a3c);
  position: relative;
}
.video-thumb::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.08), transparent 50%);
}
.video-thumb::after {
  content: "▶";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 28px;
  color: #fff;
  opacity: 0.85;
}
.video-body { padding: 20px 22px 24px; }
.video-body .cat { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.video-body h4 { font-size: 18px; font-weight: 600; letter-spacing: -0.015em; color: var(--ink); line-height: 1.25; margin-bottom: 8px; }
.video-body p { font-size: 13px; color: var(--dim); line-height: 1.5; }
.video-body .price { margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--ink); }
.video-body .price .soon { color: var(--muted); font-weight: 400; }

/* ========== BIO TEASER ========== */

.bio-teaser {
  padding: 120px 0;
  border-bottom: 1px solid var(--line-soft);
}
.bio-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
  align-items: start;
}
@media(max-width:900px){.bio-grid{grid-template-columns:1fr;gap:32px;}}
.bio-grid .kicker { margin-bottom: 16px; display: block; }
.bio-grid h2 { margin-bottom: 20px; }
.bio-grid p { font-size: 18px; line-height: 1.7; color: var(--text); margin-bottom: 20px; }
.bio-grid p:first-of-type::first-letter { font-size: 56px; font-weight: 500; float: left; line-height: 0.85; margin: 4px 10px 0 0; color: var(--ink); }

/* ========== NUMBERS STRIP ========== */

.numbers {
  padding: 80px 0;
  border-bottom: 1px solid var(--line-soft);
  background: var(--paper);
}
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
@media(max-width:860px){.numbers-grid{grid-template-columns:1fr 1fr;}}
.num-cell { padding: 20px 32px 20px 0; border-right: 1px solid var(--line-soft); }
.num-cell:last-child { border-right: 0; }
@media(max-width:860px){.num-cell{padding:24px 0;}.num-cell:nth-child(2n){border-right:0;}.num-cell:not(:last-child){border-bottom:1px solid var(--line-soft);padding-left:20px;padding-right:20px;}}
.num-cell .n { font-size: clamp(36px, 4vw, 56px); font-weight: 500; letter-spacing: -0.035em; line-height: 1; color: var(--ink); margin-bottom: 10px; }
.num-cell .l { font-size: 13px; color: var(--muted); letter-spacing: -0.005em; }

/* ========== PRESS ========== */

.press {
  padding: 96px 0;
  border-bottom: 1px solid var(--line-soft);
}
.press-head { text-align: center; margin-bottom: 56px; }
.press-head .kicker { margin-bottom: 14px; }
.press-logos {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 40px;
  align-items: center;
  margin-bottom: 72px;
}
@media(max-width:768px){.press-logos{grid-template-columns:repeat(3,1fr);gap:28px;}}
.press-logos span {
  font-size: 16px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: -0.015em;
  text-align: center;
  opacity: 0.75;
  transition: opacity 0.2s;
  padding: 8px 0;
}
.press-logos span:hover { opacity: 1; color: var(--ink); }

.press-quote {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}
.press-quote q {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--ink);
  quotes: "“" "”" "‘" "’";
}
.press-quote q::before { content: open-quote; }
.press-quote q::after { content: close-quote; }
.press-quote cite { display: block; margin-top: 20px; font-size: 13px; font-style: normal; color: var(--muted); letter-spacing: 0.04em; text-transform: uppercase; }

/* ========== VENTURES ========== */

.ventures-section {
  padding: 120px 0;
  border-bottom: 1px solid var(--line-soft);
}
.ventures-head {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  gap: 40px;
  margin-bottom: 56px;
  align-items: end;
}
@media(max-width:860px){.ventures-head{grid-template-columns:1fr;gap:16px;margin-bottom:40px;}}
.ventures-head .kicker { display: block; margin-bottom: 14px; }
.ventures-list { border-top: 1px solid var(--line); }
.ventures-list a {
  display: grid;
  grid-template-columns: 50px 1fr 2fr auto;
  gap: 40px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  transition: padding-left 0.25s;
}
.ventures-list a:hover { padding-left: 12px; }
@media(max-width:860px){.ventures-list a{grid-template-columns:40px 1fr auto;gap:16px;}.ventures-list a .desc{display:none;}}
.v-num { font-size: 13px; color: var(--muted); }
.v-name { font-size: clamp(22px, 2.8vw, 32px); font-weight: 500; letter-spacing: -0.02em; color: var(--ink); }
.v-desc { font-size: 14px; color: var(--dim); line-height: 1.5; }
.v-arrow { font-size: 15px; color: var(--muted); transition: transform 0.25s; }
.ventures-list a:hover .v-arrow { transform: translateX(4px); color: var(--ink); }

/* ========== SPEAKER CTA ========== */

.speaker-cta {
  padding: 120px 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line-soft);
}
.speaker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
@media(max-width:900px){.speaker-grid{grid-template-columns:1fr;gap:32px;}}

/* ========== FINAL CTA ========== */

.final-cta {
  padding: 140px 0;
  text-align: center;
  background: var(--ink);
  color: #fff;
}
.final-cta .kicker { color: #86868b; margin-bottom: 20px; }
.final-cta h2 { color: #fff; margin-bottom: 28px; }
.final-cta p { max-width: 540px; margin: 0 auto 40px; color: #a1a1a6; font-size: 18px; line-height: 1.55; }
.final-cta .btn-primary { background: #fff; color: var(--ink); }
.final-cta .btn-primary:hover { background: #e4e4e4; }

/* ========== FOOTER ========== */

.footer {
  background: var(--paper);
  padding: 72px 0 32px;
  color: var(--dim);
  font-size: 13px;
  border-top: 1px solid var(--line-soft);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-soft);
}
@media(max-width:860px){.footer-top{grid-template-columns:1fr 1fr;gap:32px;}}
@media(max-width:540px){.footer-top{grid-template-columns:1fr;}}
.footer-brand-name { font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 10px; letter-spacing: -0.015em; }
.footer-brand p { color: var(--dim); font-size: 13px; line-height: 1.55; max-width: 340px; }
.footer-col h5 { font-size: 12px; font-weight: 600; color: var(--ink); margin-bottom: 14px; letter-spacing: -0.005em; }
.footer-col a { display: block; padding: 4px 0; color: var(--dim); transition: color 0.15s; }
.footer-col a:hover { color: var(--ink); }
.footer-bot { padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--muted); }

/* ========== PAGE-HEAD (inside pages) ========== */

.page-head {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line-soft);
}
.page-head .kicker { display: block; margin-bottom: 20px; }
.page-head .lead { margin-top: 24px; max-width: 720px; }

/* ========== MISC ========== */

.link-underline { color: var(--ink); border-bottom: 1px solid var(--line); padding-bottom: 1px; transition: border-color 0.2s; }
.link-underline:hover { border-bottom-color: var(--ink); }