/* ============================================================
   Gelecek İçin — deepseek_take v2
   Editöryel tasarım dili: kağıt zemini, mürekkep lacivert,
   cyan + mercan vurgular, dev tipografi, serif italic aksanlar,
   mono etiketler, numaralı bölümler.
   ============================================================ */

:root {
  --ink: #07151f;
  --ink-soft: #17303e;
  --paper: #f4f1e8;
  --paper-deep: #e9e5da;
  --cyan: #59d9e4;
  --cyan-dark: #0b94ae;
  --coral: #ff684d;
  --line: rgba(7, 21, 31, 0.16);
  --radius: 28px;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --serif: Georgia, "Times New Roman", serif;
  --sans: "Space Grotesk", "Inter", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
::selection { background: var(--cyan); color: var(--ink); }

.container { max-width: 1280px; margin: 0 auto; padding: 0 clamp(22px, 4vw, 48px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244, 241, 232, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 78px;
  padding: 0 clamp(22px, 4vw, 68px);
}
.brand { display: flex; align-items: center; gap: 12px; font-size: 14px; font-weight: 700; letter-spacing: -0.02em; width: max-content; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--ink); color: var(--cyan);
  font-family: var(--mono); font-size: 11px; letter-spacing: -0.08em;
}
.brand-mark.inverse { background: var(--cyan); color: var(--ink); }
.desktop-nav { display: flex; gap: 34px; }
.desktop-nav a { font-size: 13px; font-weight: 600; position: relative; }
.desktop-nav a::after {
  content: ""; position: absolute; left: 0; bottom: -8px;
  width: 100%; height: 2px; background: var(--coral);
  transform: scaleX(0); transform-origin: left; transition: transform 0.25s ease;
}
.desktop-nav a:hover::after { transform: scaleX(1); }
.header-cta {
  justify-self: end;
  display: flex; align-items: center; gap: 28px;
  border: 1px solid var(--ink); border-radius: 999px;
  font-size: 13px; font-weight: 650; padding: 12px 18px;
  transition: background 0.2s ease, color 0.2s ease;
}
.header-cta:hover { background: var(--ink); color: #fff; }
.mobile-menu { display: none; justify-self: end; position: relative; }
.mobile-menu summary { cursor: pointer; font-size: 13px; font-weight: 700; list-style: none; padding: 6px; }
.mobile-menu summary::-webkit-details-marker { display: none; }
.mobile-menu nav {
  position: absolute; right: 0; top: 40px; width: 220px;
  background: var(--ink); color: #fff; border-radius: 18px;
  display: grid; gap: 4px; padding: 14px;
  box-shadow: 0 20px 50px rgba(7, 21, 31, 0.25);
}
.mobile-menu nav a { border-radius: 10px; padding: 11px 12px; font-size: 14px; }
.mobile-menu nav a:hover { background: rgba(255, 255, 255, 0.09); }

/* ---------- Hero ---------- */
.hero {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(7, 21, 31, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 21, 31, 0.08) 1px, transparent 1px);
  background-size: 58px 58px;
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(320px, 0.78fr);
  min-height: calc(100svh - 78px);
  padding: clamp(68px, 9vw, 130px) clamp(22px, 6vw, 100px) 38px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; top: 18%; left: 46%;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--coral);
}
.hero-copy { align-self: center; max-width: 860px; position: relative; z-index: 2; }
.eyebrow, .section-label {
  display: flex; align-items: center;
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  margin: 0 0 30px; color: rgba(7, 21, 31, 0.6);
}
.eyebrow span { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); margin-right: 10px; }
.hero h1, .section-heading h2, .events-title h2, .community-heading h2, .join h2 {
  font-size: clamp(56px, 7.1vw, 110px);
  font-weight: 650;
  letter-spacing: -0.075em;
  line-height: 0.91;
  margin: 0;
}
.hero h1 em, h2 em { color: var(--cyan-dark); font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em; }
.hero-lede { font-size: clamp(18px, 1.55vw, 23px); line-height: 1.48; margin: 34px 0 0; max-width: 590px; color: var(--ink-soft); }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 42px; }
.button {
  display: inline-flex; align-items: center; gap: 40px;
  border-radius: 999px; font-size: 14px; font-weight: 700; padding: 17px 22px;
  transition: transform 0.2s ease, background 0.2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: #fff; }
.button-primary:hover { background: var(--ink-soft); }
.text-link { border-bottom: 1px solid var(--ink); font-size: 14px; font-weight: 650; padding-bottom: 5px; }
.text-link span { margin-left: 14px; }
.hero-visual {
  align-self: center; justify-self: center;
  position: relative; width: 100%; max-width: 530px; aspect-ratio: 1;
  background: var(--cyan); border-radius: 50%;
}
.hero-visual::before {
  content: ""; position: absolute; inset: 7%;
  border: 1px solid rgba(7, 21, 31, 0.5); border-radius: 50%;
}
.hero-visual img {
  position: absolute; top: 2%; left: 3%; width: 94%; height: 94%;
  object-fit: contain; z-index: 3;
  filter: drop-shadow(0 28px 35px rgba(7, 21, 31, 0.24));
}
.orbit { position: absolute; border: 1px dashed var(--ink); border-radius: 50%; }
.orbit-one { inset: -6%; }
.orbit-two { inset: -13%; opacity: 0.2; }
.signal {
  position: absolute; z-index: 4;
  background: var(--paper); border: 1px solid var(--ink); border-radius: 999px;
  font-family: var(--mono); font-size: 10px; padding: 7px 12px;
}
.signal-one { top: 17%; left: -10px; }
.signal-two { right: -18px; bottom: 8%; }
.hero-meta {
  grid-column: 1 / -1; align-self: end;
  display: flex; justify-content: space-between;
  border-top: 1px solid var(--line); margin-top: 70px; padding-top: 20px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
}

/* ---------- Manifesto ---------- */
.manifesto {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  display: grid; gap: 70px; grid-template-columns: 260px 1fr;
  padding: clamp(80px, 10vw, 155px) clamp(22px, 6vw, 100px);
}
.manifesto-copy { max-width: 1050px; }
.manifesto-lead { font-size: clamp(32px, 4.3vw, 65px); letter-spacing: -0.055em; line-height: 1.08; margin: 0; }
.manifesto-lead strong { color: var(--cyan-dark); font-family: var(--serif); font-weight: 400; }
.manifesto-detail {
  display: grid; grid-template-columns: 1fr 1fr; gap: 36px;
  border-top: 1px solid var(--line); margin-top: 65px; padding-top: 28px;
}
.manifesto-detail p { color: rgba(7, 21, 31, 0.72); font-size: 16px; line-height: 1.65; margin: 0; }

/* ---------- Sections ---------- */
.section-shell { padding: clamp(80px, 10vw, 150px) clamp(22px, 6vw, 100px); }
.section-heading, .events-title, .community-heading {
  display: flex; align-items: end; justify-content: space-between;
  margin-bottom: 72px;
}
.section-heading h2, .events-title h2, .community-heading h2 { font-size: clamp(52px, 6.4vw, 95px); }
.section-heading > p { color: rgba(7, 21, 31, 0.65); font-size: 16px; line-height: 1.6; margin: 0 0 8px; max-width: 410px; }
.section-heading > div { flex: 1; }
.section-heading .right { text-align: right; }

/* Projects */
.project-grid { display: grid; gap: 20px; grid-template-columns: repeat(3, 1fr); }
.project-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.project-card:hover { transform: translateY(-8px); box-shadow: 0 22px 55px rgba(7, 21, 31, 0.09); }
.project-image { position: relative; aspect-ratio: 1.05; background: var(--paper-deep); overflow: hidden; }
.project-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.55s ease; }
.project-card:hover .project-image img { transform: scale(1.035); }
.project-number {
  position: absolute; top: 18px; left: 18px; z-index: 2;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--cyan); display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 11px;
}
.project-content { padding: 27px 28px 30px; }
.project-tag { color: var(--cyan-dark); font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 14px; }
.project-content h3 { font-size: clamp(24px, 2.1vw, 34px); letter-spacing: -0.045em; line-height: 1.05; margin: 0 0 14px; }
.project-content > p { color: rgba(7, 21, 31, 0.66); font-size: 14px; line-height: 1.58; margin: 0; }
.project-person { border-top: 1px solid var(--line); margin-top: 26px; padding-top: 18px; display: grid; gap: 5px; }
.project-person span { font-size: 13px; font-weight: 700; }
.project-person small { color: rgba(7, 21, 31, 0.55); font-size: 10px; }

/* Events */
.events { background: var(--ink); color: #fff; display: grid; gap: 8vw; grid-template-columns: 0.75fr 1.25fr; }
.section-label.light { color: rgba(255, 255, 255, 0.58); }
.events-title h2 { color: #fff; font-size: clamp(56px, 6.5vw, 98px); }
.events-title h2 em { color: var(--cyan); }
.events-title { align-items: flex-start; flex-direction: column; gap: 30px; margin-bottom: 0; }
.event-list { border-top: 1px solid rgba(255, 255, 255, 0.22); }
.event-card {
  display: grid; gap: 28px; grid-template-columns: 100px 1fr 150px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.22); padding: 35px 0;
}
.event-date { display: flex; gap: 10px; }
.event-date strong { color: var(--cyan); font-size: 44px; letter-spacing: -0.06em; line-height: 1; }
.event-date span { color: rgba(255, 255, 255, 0.55); font-family: var(--mono); font-size: 9px; line-height: 1.35; }
.event-type { color: var(--coral); font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; margin: 2px 0 14px; }
.event-info h3 { font-size: 25px; letter-spacing: -0.035em; line-height: 1.08; margin: 0 0 12px; }
.event-info > p:not(.event-type) { color: rgba(255, 255, 255, 0.63); font-size: 13px; line-height: 1.55; margin: 0 0 18px; }
.event-place { font-size: 11px; font-weight: 650; }
.event-poster { position: relative; aspect-ratio: 3 / 4; border-radius: 12px; overflow: hidden; }
.event-poster img { width: 100%; height: 100%; object-fit: cover; }

/* Achievement */
.achievement { display: grid; gap: clamp(35px, 7vw, 110px); grid-template-columns: 1.18fr 0.82fr; align-items: stretch; }
.achievement-image { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 650px; }
.achievement-image img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.achievement-image span {
  position: absolute; left: 24px; bottom: 24px;
  background: var(--coral); color: #fff; border-radius: 999px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; padding: 10px 14px;
}
.achievement-copy { align-self: center; }
.big-number {
  font-family: var(--serif); font-size: clamp(105px, 14vw, 210px);
  letter-spacing: -0.09em; line-height: 0.7; color: var(--cyan-dark);
  margin: 55px 0 36px;
}
.achievement-copy h2 { font-size: clamp(38px, 4vw, 62px); letter-spacing: -0.055em; line-height: 0.98; margin: 0; }
.achievement-copy > p:not(.big-number):not(.section-label) { color: rgba(7, 21, 31, 0.67); font-size: 15px; line-height: 1.65; margin: 28px 0; max-width: 500px; }
.achievement-names { display: flex; flex-wrap: wrap; gap: 10px; border-top: 1px solid var(--line); padding-top: 22px; }
.achievement-names span { border: 1px solid var(--line); border-radius: 999px; font-size: 11px; padding: 9px 13px; }

/* Community / team */
.community { background: var(--paper-deep); border-top: 1px solid var(--line); }
.community-heading h2 { font-size: clamp(49px, 6vw, 92px); }
.team-grid { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.team-card {
  display: grid; grid-template-columns: 62px 1fr auto; gap: 18px; align-items: center;
  min-height: 125px; padding: 22px 24px 22px 0; border-bottom: 1px solid var(--line);
}
.team-card:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 40px; }
.team-card:nth-child(even) { padding-left: 40px; }
.team-photo {
  width: 58px; height: 58px; border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--line);
}
.team-card h3 { font-size: 17px; letter-spacing: -0.025em; margin: 0 0 5px; }
.team-card p { color: rgba(7, 21, 31, 0.58); font-size: 12px; margin: 0; }
.team-card > span { color: rgba(7, 21, 31, 0.5); font-family: var(--mono); font-size: 9px; }
.team-more { margin-top: 34px; text-align: center; }

/* Join */
.join {
  position: relative; overflow: hidden;
  background: var(--cyan-dark); color: #fff;
  display: flex; flex-direction: column; align-items: center; text-align: center;
  min-height: 720px; padding: 110px 22px;
}
.join::before, .join::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 255, 255, 0.28); border-radius: 50%;
}
.join::before { width: 640px; height: 640px; }
.join::after { width: 930px; height: 930px; }
.join > * { position: relative; z-index: 2; }
.join h2 { font-size: clamp(55px, 7vw, 105px); max-width: 1200px; }
.join h2 em { color: var(--paper); }
.join > p:not(.section-label) { font-size: 17px; line-height: 1.55; margin: 35px auto; max-width: 560px; }
.button-light { background: var(--paper); color: var(--ink); }

/* Footer */
.footer {
  background: var(--ink); color: #fff;
  display: grid; gap: 55px; grid-template-columns: 1.1fr 1fr 0.8fr;
  padding: 75px clamp(22px, 6vw, 100px) 34px;
}
.footer-brand { display: flex; align-items: center; gap: 16px; }
.footer-brand p { font-size: 15px; font-weight: 650; line-height: 1.25; margin: 0; }
.footer-contact { display: grid; gap: 12px; }
.footer-contact span { color: rgba(255, 255, 255, 0.45); font-family: var(--mono); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; }
.footer-contact a { font-size: 17px; text-decoration: underline; text-decoration-color: var(--cyan); text-underline-offset: 6px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; justify-self: end; }
.footer-links a { font-size: 12px; }
.footer-links a span { color: var(--cyan); margin-left: 12px; }
.footer-note {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.15); margin: 15px 0 0; padding-top: 24px;
  color: rgba(255, 255, 255, 0.4); font-family: var(--mono); font-size: 9px; text-transform: uppercase;
}

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .desktop-nav, .header-cta { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
  .mobile-menu { display: block; }
  .hero { grid-template-columns: 1fr 0.7fr; }
  .hero h1 { font-size: clamp(52px, 8vw, 76px); }
  .manifesto { grid-template-columns: 1fr; }
  .events { grid-template-columns: 1fr; }
  .achievement-image { min-height: 530px; }
}
@media (max-width: 760px) {
  .site-header { height: 68px; }
  .brand-mark { width: 34px; height: 34px; }
  .hero { display: flex; flex-direction: column; min-height: auto; padding-top: 72px; }
  .hero::before { left: auto; right: 20px; top: 45px; }
  .hero h1 { font-size: clamp(48px, 14vw, 69px); }
  .hero-lede { font-size: 17px; }
  .hero-actions { flex-direction: column; align-items: flex-start; gap: 22px; margin-top: 32px; }
  .hero-visual { width: 82%; max-width: 350px; margin: 78px auto 25px; }
  .hero-meta { display: grid; gap: 8px; margin-top: 55px; width: 100%; }
  .hero-meta span:nth-child(2) { display: none; }
  .manifesto { gap: 25px; }
  .manifesto-detail { grid-template-columns: 1fr; }
  .section-heading, .events-title, .community-heading { flex-direction: column; align-items: flex-start; gap: 35px; }
  .section-heading > p { max-width: 100%; }
  .section-heading .right { text-align: left; }
  .project-grid { grid-template-columns: 1fr; }
  .project-image { aspect-ratio: 1.1; }
  .event-card { grid-template-columns: 78px 1fr; }
  .event-poster { display: none; }
  .event-date strong { font-size: 36px; }
  .achievement { grid-template-columns: 1fr; }
  .achievement-image { min-height: 420px; }
  .big-number { margin-top: 70px; }
  .team-grid { grid-template-columns: 1fr; }
  .team-card:nth-child(odd) { border-right: 0; padding-right: 0; }
  .team-card:nth-child(even) { padding-left: 0; }
  .join { min-height: 650px; }
  .join::before { width: 430px; height: 430px; }
  .join::after { width: 650px; height: 650px; }
  .footer { grid-template-columns: 1fr; }
  .footer-links { justify-self: start; }
  .footer-note { grid-column: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}