/* ============================================================
   AIgeus — style.css
   Palet: saman sarısı, parşömen, doğal bej; koyu kahve metin.
   Bağımlılık yok: sistem yazı tipleri, JavaScript yok.
   ============================================================ */

:root {
  --paper:       #f7f0e0;
  --paper-deep:  #efe3c9;
  --ink:         #1e1710;
  --ink-soft:    #4b3f31;
  --muted:       #6b5b45;
  --ochre:       #8a5a16;
  --straw:       #d9b45a;
  --rule:        #dfd0b2;
  --measure:     34rem;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 112.5%;          /* 18px taban */
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  width: 100%;
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

p { margin: 0 0 1.1em; }

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--straw);
  padding-bottom: 1px;
}
a:hover, a:focus { border-bottom-color: var(--ochre); }

:focus-visible {
  outline: 2px solid var(--ochre);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999em;
  top: 0;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: .6rem 1rem;
  font-family: var(--sans);
  font-size: .85rem;
}
.skip-link:focus { left: 1rem; top: 1rem; z-index: 10; }

/* --- Üst şerit ------------------------------------------------ */

.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.masthead-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  padding-top: 1.5rem;
  padding-bottom: 1.35rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  border-bottom: 0;
  padding: 0;
}

.brand-mark {
  font-family: var(--serif);
  font-size: 1.7rem;
  line-height: 1;
  color: var(--ochre);
  transform: translateY(.02em);
}

.wordmark {
  font-family: var(--serif);
  font-size: 1.3rem;
  letter-spacing: .015em;
}

.wordmark-ai {
  letter-spacing: .04em;
  font-weight: 700;
}

.nav {
  font-family: var(--sans);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  display: flex;
  gap: 1.35rem;
}

.nav a {
  color: var(--muted);
  border-bottom: 1px solid transparent;
}
.nav a:hover, .nav a:focus {
  color: var(--ink);
  border-bottom-color: var(--straw);
}

/* --- Açılış --------------------------------------------------- */

.hero {
  padding-top: 4.5rem;
  padding-bottom: 3.5rem;
}

.kicker {
  font-family: var(--sans);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ochre);
  margin-bottom: 1.6rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  line-height: 1.12;
  font-weight: 400;
  letter-spacing: -.015em;
  margin: 0 0 1.5rem;
  max-width: 18ch;
}

.lede {
  font-size: 1.06rem;
  color: var(--ink-soft);
  max-width: var(--measure);
  margin-bottom: 0;
}

/* --- Bölüm başlıkları ----------------------------------------- */

.section-title {
  font-family: var(--sans);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ochre);
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin: 0 0 2.2rem;
}
.section-title::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--rule);
  transform: translateY(-.3em);
}

/* --- Üç içerik alanı ------------------------------------------ */

.channels { padding-bottom: 3.5rem; }

.channel {
  display: flex;
  gap: 1.1rem;
  padding: 1.9rem 0;
  border-top: 1px solid var(--rule);
}
.channel:last-of-type { border-bottom: 1px solid var(--rule); }

.channel-num {
  flex: 0 0 1.7rem;
  margin: .15rem 0 0;
  font-size: 1.05rem;
  color: var(--straw);
  font-variant-numeric: tabular-nums;
}

.channel-body { flex: 1 1 auto; }

.channel-body h3 {
  font-size: 1.42rem;
  font-weight: 400;
  line-height: 1.3;
  margin: 0 0 .5rem;
}

.channel-body p {
  color: var(--ink-soft);
  max-width: var(--measure);
  margin-bottom: .7rem;
}

.channel-note {
  font-family: var(--sans);
  font-size: .74rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--muted);
  margin: .95rem 0 0;
}

/* --- Hakkında ------------------------------------------------- */

.about { padding-bottom: 4.5rem; }

.about-body {
  border-left: 2px solid var(--straw);
  padding-left: 1.6rem;
  max-width: 36rem;
}

.about-body p { color: var(--ink-soft); }
.about-body p:last-child { margin-bottom: 0; }

.hanzi {
  font-size: 1.12em;
  letter-spacing: .06em;
  color: var(--ink);
}

/* --- Alt bilgi ------------------------------------------------ */

.colophon {
  border-top: 1px solid var(--rule);
  background: var(--paper-deep);
}

.colophon-inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .4rem 1.5rem;
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

.colophon-brand {
  font-size: 1rem;
  margin: 0;
  color: var(--ink);
}
.colophon-brand span { color: var(--ochre); }

.colophon-meta {
  font-family: var(--sans);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--ink-soft);
  margin: 0;
}
.colophon-meta a { color: var(--ink-soft); }

/* --- Küçük ekran ---------------------------------------------- */

@media (max-width: 34rem) {
  body { font-size: 106.25%; }
  .wrap { padding: 0 1.15rem; }
  .masthead-inner { padding-top: 1.15rem; padding-bottom: 1rem; }
  .hero { padding-top: 3rem; padding-bottom: 2.5rem; }
  .nav { gap: .95rem; font-size: .74rem; }
  .channel { gap: .85rem; }
  .channel-num { flex-basis: 1.45rem; font-size: .95rem; }
  .about-body { padding-left: 1.1rem; }
  .colophon-inner { padding-top: 1.25rem; padding-bottom: 1.25rem; }
}

/* --- Sistem koyu teması --------------------------------------- */

@media (prefers-color-scheme: dark) {
  :root {
    --paper:      #1a140e;
    --paper-deep: #14100b;
    --ink:        #f2e7d2;
    --ink-soft:   #d6c7ac;
    --muted:      #a9997e;
    --ochre:      #d9a94e;
    --straw:      #c39a44;
    --rule:       #3b2f22;
  }
}

/* --- Yazdırma -------------------------------------------------- */

@media print {
  .nav, .skip-link { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
  a { border-bottom: 0; }
}