/* ==========================================================================
   Konteynerium — theme stylesheet ("Docker Mavisi")
   Docker'ın marka renklerinden esinlenen palet: derin okyanus lacivert zemin
   tonları, klasik Moby balina logosunun canlı mavisi (accent) ve o mavinin
   yanında duran açık siyan (accent-2). Tipografi: Barlow Condensed (başlık),
   Public Sans (gövde), JetBrains Mono (kod & etiketler).
   ========================================================================== */

:root {
  --ground: #eef5fc;
  --surface: #ffffff;
  --surface-2: #e2edf9;
  --ink: #0b2545;
  --ink-soft: #3d5a80;
  --ink-faint: #7c93ad;
  --accent: #1d63ed;
  --accent-soft: #cfe0fb;
  --accent-2: #0089ad;
  --accent-2-soft: #d2f1fa;
  --line: #d3e3f5;
  --line-strong: #aecbe8;
  --code-bg: #071c36;
  --code-ink: #dce8f7;
  --danger: #c5362b;
  --danger-soft: #fadad6;
  --warning: #a3690a;
  --warning-soft: #faead0;
  --shadow: 0 1px 2px rgba(11,37,69,0.08), 0 8px 20px -12px rgba(11,37,69,0.26);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #071527;
    --surface: #0e2038;
    --surface-2: #132a47;
    --ink: #eaf2fb;
    --ink-soft: #9db3cc;
    --ink-faint: #5f7896;
    --accent: #4d8dfa;
    --accent-soft: #163364;
    --accent-2: #3cd3f5;
    --accent-2-soft: #103247;
    --line: #1d3a5c;
    --line-strong: #294c74;
    --code-bg: #051221;
    --code-ink: #d7e6f6;
    --danger: #ff8f7d;
    --danger-soft: #4a221c;
    --warning: #e5ab4c;
    --warning-soft: #3d2d10;
    --shadow: 0 1px 2px rgba(0,0,0,0.35), 0 10px 24px -14px rgba(0,0,0,0.65);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: 'Public Sans', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  font-size: 17px;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--accent-soft); }

h1, h2, h3, h4, .display {
  font-family: 'Barlow Condensed', system-ui, sans-serif;
  text-wrap: balance;
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.05;
  margin: 0 0 0.5em;
}

.wrap { max-width: 920px; margin: 0 auto; padding-inline: 20px; }
.wrap-wide { max-width: 1080px; margin: 0 auto; padding-inline: 20px; }

/* ---- brand bar ---- */
.brand-bar {
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
}

/* ---- skip link ---- */
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--surface);
  padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---- masthead ---- */
.site-header { border-bottom: 3px solid var(--ink); background: var(--ground); }
.masthead {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding-block: 16px; flex-wrap: wrap;
}
.site-logo { display: flex; align-items: baseline; gap: 10px; }
.site-logo a { color: var(--ink); text-decoration: none; }
.site-logo .mark {
  font-family: 'Barlow Condensed', sans-serif; font-weight: 700; font-size: 1.7rem;
  letter-spacing: -0.01em;
}
.site-logo .mark em { font-style: normal; color: var(--accent); }
.site-logo .tag {
  font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-faint); display: none;
}
@media (min-width: 640px) { .site-logo .tag { display: inline; } }

.main-nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; margin: 0; padding: 0; }
.main-nav li { position: relative; }
.main-nav a {
  color: var(--ink-soft); font-size: 0.92rem; font-weight: 500; padding: 8px 11px;
  border-radius: 6px; text-decoration: none; display: inline-block;
}
.main-nav a:hover, .main-nav .current-menu-item > a { color: var(--ink); background: var(--surface-2); }

/* ---- dropdown grouping (e.g. "Araçlar") ---- */
.main-nav li.menu-item-has-children > a::after {
  content: "▾"; display: inline-block; font-size: 0.6em; margin-left: 6px;
  vertical-align: middle; opacity: 0.7;
}
.main-nav .sub-menu {
  display: none; flex-direction: column; gap: 2px;
  position: absolute; top: calc(100% + 4px); left: 0; z-index: 60;
  min-width: 230px; margin: 0; padding: 6px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 14px 28px -8px rgba(7, 28, 54, 0.28);
}
.main-nav li.menu-item-has-children:hover > .sub-menu,
.main-nav li.menu-item-has-children:focus-within > .sub-menu {
  display: flex;
}
.main-nav .sub-menu a { display: block; white-space: nowrap; }
.main-nav .sub-menu .current-menu-item > a { color: var(--ink); background: var(--surface-2); }

/* ---- hero ---- */
.hero { padding-block: 46px 30px; border-bottom: 1px solid var(--line); }
.eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 0.75rem; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--accent); display: inline-block; }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.1rem); margin-bottom: 16px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lede { font-size: 1.08rem; color: var(--ink-soft); max-width: 62ch; margin: 0; }

/* ---- section scaffolding ---- */
.section { padding-block: 44px; border-bottom: 1px solid var(--line); }
.section-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; }
.section-num {
  font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--ink-faint);
  border: 1px solid var(--line-strong); border-radius: 999px; padding: 3px 10px; flex-shrink: 0;
}
.section-head h2 { font-size: clamp(1.5rem, 3vw, 1.9rem); margin: 0; }
.section-intro { color: var(--ink-soft); max-width: 66ch; margin: -8px 0 24px; }

/* ---- layer stack (homepage curriculum) ---- */
.stack { display: flex; flex-direction: column; gap: 10px; }
.layer {
  background: var(--surface); border: 1px solid var(--line); border-radius: 8px;
  box-shadow: var(--shadow); overflow: hidden; text-decoration: none; color: inherit;
  display: block; transition: transform .15s ease, box-shadow .15s ease;
}
.layer:hover { transform: translateY(-2px); box-shadow: 0 4px 16px -6px rgba(0,0,0,0.18); text-decoration: none; }
.layer-head { display: flex; align-items: center; gap: 14px; padding: 15px 18px; flex-wrap: wrap; }
.layer-tier {
  font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.06em; color: var(--surface); background: var(--accent-2);
  border-radius: 5px; padding: 3px 9px; flex-shrink: 0;
}
.layer-head h3 { font-size: 1.3rem; margin: 0; font-weight: 600; flex-grow: 1; color: var(--ink); }
.layer-head .count { font-size: 0.78rem; color: var(--ink-faint); font-family: 'JetBrains Mono', monospace; }
.layer-desc { padding: 0 18px 16px; color: var(--ink-soft); font-size: 0.92rem; margin: 0; }

/* ---- post grid ---- */
.post-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }
.post-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
  padding: 20px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 10px;
}
.badge {
  font-family: 'JetBrains Mono', monospace; font-size: 0.66rem; letter-spacing: 0.06em;
  text-transform: uppercase; font-weight: 600; padding: 3px 9px; border-radius: 999px;
  display: inline-flex; width: fit-content;
}
.badge.baslangic { background: var(--accent-2-soft); color: var(--accent-2); }
.badge.orta { background: var(--accent-soft); color: var(--accent); }
.badge.ileri { background: var(--ink); color: var(--surface); }
.post-card h3 { font-size: 1.3rem; margin: 0; }
.post-card h3 a { color: var(--ink); }
.post-card .excerpt { color: var(--ink-soft); font-size: 0.92rem; margin: 0; flex-grow: 1; }
.post-card .meta { font-family: 'JetBrains Mono', monospace; font-size: 0.74rem; color: var(--ink-faint); }

/* ---- single article ---- */
.article-head { padding-block: 40px 20px; border-bottom: 1px solid var(--line); }
.article-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.article-meta .cat { font-family: 'JetBrains Mono', monospace; font-size: 0.76rem; color: var(--accent-2); font-weight: 600; }
.article-meta .date { font-family: 'JetBrains Mono', monospace; font-size: 0.76rem; color: var(--ink-faint); }
.article-head h1 { font-size: clamp(1.9rem, 4.5vw, 2.7rem); }
.article-body { padding-block: 32px 60px; font-size: 1.05rem; }
.article-body > *:first-child { margin-top: 0; }
.article-body p { margin: 0 0 1.3em; max-width: 68ch; }
.article-body h2 { font-size: 1.55rem; margin: 1.6em 0 0.6em; }
.article-body h3 { font-size: 1.25rem; margin: 1.4em 0 0.5em; font-weight: 600; }
.article-body ul, .article-body ol { max-width: 68ch; margin: 0 0 1.3em; padding-left: 1.3em; color: var(--ink); }
.article-body li { margin-bottom: 0.4em; }
.article-body strong { color: var(--ink); }
.article-body blockquote {
  border-left: 3px solid var(--accent); margin: 1.6em 0; padding: 4px 0 4px 18px;
  color: var(--ink-soft); font-style: normal; max-width: 64ch;
}
.article-body code {
  font-family: 'JetBrains Mono', monospace; font-size: 0.88em; background: var(--surface-2);
  padding: 2px 6px; border-radius: 4px; color: var(--accent-2);
}
.article-body pre {
  background: var(--code-bg); color: var(--code-ink); border-radius: 8px; padding: 16px 18px;
  overflow-x: auto; margin: 0 0 1.4em; box-shadow: var(--shadow);
}
.article-body pre code { background: none; padding: 0; color: inherit; font-size: 0.88rem; line-height: 1.55; }
.article-body table { width: 100%; border-collapse: collapse; margin: 0 0 1.6em; font-size: 0.94rem; }
.article-body th, .article-body td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.article-body thead th {
  background: var(--surface-2); font-family: 'JetBrains Mono', monospace; font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft);
}
.article-body hr { border: none; border-top: 1px dashed var(--line-strong); margin: 2em 0; }
.callout {
  display: flex; gap: 14px; background: var(--surface); border: 1px solid var(--line);
  border-left: 3px solid var(--accent); border-radius: 8px; padding: 16px 18px;
  box-shadow: var(--shadow); margin: 1.6em 0; max-width: 68ch;
}
.callout .glyph { font-family: 'JetBrains Mono', monospace; color: var(--accent); font-weight: 600; flex-shrink: 0; }
.callout p { margin: 0 !important; color: var(--ink-soft); font-size: 0.94rem; }

/* ---- verification note (doğrulanabilirlik sinyali) ---- */
.verify-note {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace; font-size: 0.74rem; color: var(--accent-2);
  background: var(--accent-2-soft); border-radius: 999px; padding: 6px 14px;
  width: fit-content; margin: 0 0 22px;
}
.verify-note .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-2); flex-shrink: 0; }
.verify-note .sep { color: var(--ink-faint); }

/* ---- archive header ---- */
.archive-head { padding-block: 40px 24px; border-bottom: 1px solid var(--line); }
.archive-head .eyebrow { margin-bottom: 10px; }
.archive-head h1 { font-size: clamp(1.9rem, 4vw, 2.5rem); }
.archive-head .desc { color: var(--ink-soft); max-width: 62ch; }
.seviye-filters { display: flex; gap: 8px; margin-top: 18px; flex-wrap: wrap; }

/* ---- sidebar-free footer ---- */
.site-footer { border-top: 3px solid var(--ink); margin-top: 20px; padding-block: 30px; }
.footer-grid { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-brand .mark { font-family: 'Barlow Condensed', sans-serif; font-weight: 700; font-size: 1.4rem; }
.footer-brand .mark em { font-style: normal; color: var(--accent); }
.footer-brand p { color: var(--ink-soft); font-size: 0.88rem; max-width: 40ch; margin: 8px 0 0; }
.footer-links { display: flex; flex-direction: column; gap: 6px; font-size: 0.86rem; }
.footer-links a { color: var(--ink-soft); text-decoration: none; }
.footer-links a:hover { color: var(--accent); text-decoration: underline; }
.footer-meta { font-family: 'JetBrains Mono', monospace; font-size: 0.74rem; color: var(--ink-faint); text-align: right; }

/* ---- pagination ---- */
.pagination { display: flex; gap: 8px; margin-top: 30px; }
.pagination a, .pagination span {
  font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; padding: 6px 12px;
  border: 1px solid var(--line); border-radius: 6px; color: var(--ink-soft);
}
.pagination .current { background: var(--ink); color: var(--surface); border-color: var(--ink); }

@media (max-width: 640px) {
  .hero { padding-block: 32px 22px; }
  .section { padding-block: 32px; }
  .footer-grid { flex-direction: column; }
  .footer-meta { text-align: left; }
}

/* ---- içindekiler, kod kopyalama, ilgili yazılar, arama, öğrenme yolu ---- */
.toc {
  margin: 22px 0 0; padding: 14px 18px; max-width: 68ch;
  background: var(--surface); border: 1px solid var(--line); border-radius: 8px;
}
.toc-title { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 1.3em; display: grid; gap: 4px; font-size: 0.94rem; }
.toc a { color: var(--ink-soft); }
.toc a:hover { color: var(--accent); }
.article-body h2 { scroll-margin-top: 20px; }

.code-wrap { position: relative; }
.code-wrap pre { margin: 0 0 1.4em; }
.copy-btn {
  position: absolute; top: 8px; right: 8px; font-family: 'JetBrains Mono', monospace; font-size: 0.7rem;
  background: var(--surface-2); color: var(--ink-soft); border: 1px solid var(--line-strong);
  border-radius: 5px; padding: 4px 9px; cursor: pointer; opacity: 0.85;
}
.copy-btn:hover, .copy-btn:focus-visible { opacity: 1; color: var(--accent); outline: 2px solid var(--accent); outline-offset: 1px; }
.copy-btn.done { color: var(--accent-2); }

.related { border-top: 1px solid var(--line); padding-block: 32px 50px; }
.related h2, .suggest-h { font-size: 1.4rem; margin: 0 0 16px; }
.suggest-h { margin-top: 34px; }
.related-more { margin-top: 18px; font-size: 0.92rem; }

.search-link {
  display: inline-flex; align-items: center; gap: 6px; color: var(--ink-soft); font-size: 0.86rem;
  font-family: 'JetBrains Mono', monospace; padding: 6px 10px; border: 1px solid var(--line); border-radius: 6px;
}
.search-link:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.search-form-big { display: flex; gap: 8px; margin-top: 16px; max-width: 520px; }
.search-form-big input[type=search] {
  flex: 1; min-width: 0; padding: 10px 14px; font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: 6px;
}
.search-form-big button {
  padding: 10px 18px; font: inherit; font-weight: 600; cursor: pointer; background: var(--accent); color: #fff;
  border: 0; border-radius: 6px;
}
.search-form-big input:focus-visible, .search-form-big button:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; }
.screen-reader-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.suggest-cats { list-style: none; padding: 0; margin: 0; display: flex; gap: 10px 18px; flex-wrap: wrap; }

.path-level { margin-bottom: 40px; max-width: 760px; }
.path-head { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 8px; }
.path-count { font-family: 'JetBrains Mono', monospace; font-size: 0.76rem; color: var(--ink-faint); }
.path-desc { color: var(--ink-soft); margin: 0 0 14px; }
.path-steps { margin: 0 0 12px; padding-left: 1.4em; display: grid; gap: 12px; }
.path-steps li::marker { font-family: 'JetBrains Mono', monospace; color: var(--accent); }
.path-steps a { font-weight: 600; }
.path-ex { display: block; color: var(--ink-soft); font-size: 0.9rem; }
.path-total { font-family: 'JetBrains Mono', monospace; font-size: 0.78rem; color: var(--ink-faint); }

.masthead { flex-wrap: wrap; }

/* ---- paylaşım ---- */
.share-row { margin: 8px 0 28px; }
.share-btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 6px;
  font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; font-weight: 600;
  background: var(--surface); color: var(--ink); border: 1px solid var(--line-strong);
}
.share-btn.linkedin svg { color: #0a66c2; }
.share-btn:hover { border-color: #0a66c2; color: #0a66c2; text-decoration: none; }
.share-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- anasayfa hero kaydırıcı (sola doğru kayan slaytlar; ölçü ve biçim ilk slaytla aynı) ---- */
.hero-slider { padding-block: 0; overflow: hidden; }
.hero-viewport { overflow: hidden; }
.hero-track { display: flex; transition: transform 0.7s cubic-bezier(.65,.05,.25,1); will-change: transform; }
.hero-slide { flex: 0 0 100%; min-width: 0; padding-block: 46px 22px; }
.hero-slide h1 em { font-style: normal; color: var(--accent); }
.hero-slide .lede strong { color: var(--ink); font-weight: 600; }
.hero-cta {
  display: inline-block; margin-top: 18px; padding: 9px 18px; border-radius: 6px; background: var(--accent); color: #fff;
  font-family: 'JetBrains Mono', monospace; font-size: 0.82rem; font-weight: 600;
}
.hero-cta:hover { text-decoration: none; filter: brightness(1.1); }
.hero-cta:focus-visible, .hero-btn:focus-visible, .hero-dot:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; }
.hero-controls { display: flex; align-items: center; gap: 12px; padding-block: 0 26px; }
.hero-btn {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line-strong); background: var(--surface);
  color: var(--ink-soft); cursor: pointer; font-size: 1rem; line-height: 1;
}
.hero-btn:hover { color: var(--accent); border-color: var(--accent); }
.hero-dots { display: flex; gap: 8px; }
.hero-dot { width: 26px; height: 6px; padding: 0; border: 0; border-radius: 3px; background: var(--line-strong); cursor: pointer; }
.hero-dot[aria-current="true"] { background: var(--accent); }
@media (prefers-reduced-motion: reduce) { .hero-track { transition: none; } }
@media (max-width: 640px) { .hero-slide { padding-block: 32px 16px; } }