/* =============================================================================
   Avielon Studio · develop-software.css
   Page-specific styles for /hizmetler/yazilim/kurumsal-yazilim-gelistirme
   (Develop pillar → Kurumsal Yazılım Geliştirme).
   Namespaced .ds-* · purely additive · references tokens only.
   Never touches tokens.css, site.css or site-chrome.js.
   Signature: a hairline "system schema" panel in the hero — the layered
   architecture we build, with exactly one teal node. Teal stays scarce:
   one accent per section (schema node, section eyebrow mark, CTA, featured tick).
============================================================================= */

/* ---- Section rhythm — hairline dividers encode the document structure ---- */
.ds-section { padding-block: var(--section-y); border-top: 1px solid var(--color-border); }
.ds-head { display: grid; gap: 1.1rem; max-width: 64ch; margin-bottom: clamp(2.5rem, 5vw, 3.75rem); }
.ds-head .lead { margin: 0; }
.ds-eyebrow { display: flex; align-items: center; gap: .7rem; }
.ds-actions { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }
.ds-note { font-size: .875rem; line-height: 1.55; color: var(--color-text-secondary); font-style: italic; max-width: 54ch; margin: 0; }

/* =============================================================================
   1 · HERO
============================================================================= */
.ds-hero { padding-block: clamp(3.5rem, 7vw, 6.5rem) clamp(3.5rem, 7vw, 6rem); }
.ds-hero-grid { display: grid; gap: clamp(2.5rem, 5vw, 4rem); align-items: center; }
.ds-hero-copy { display: grid; gap: 1.5rem; }
.ds-hero-copy .eyebrow { display: flex; align-items: center; gap: .7rem; }
.ds-hero h1 { max-width: 20ch; }
.ds-hero .lead { margin: 0; max-width: 60ch; }
.ds-hero-meta {
  display: flex; flex-wrap: wrap; gap: .55rem 1.1rem;
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--color-text-secondary); border-top: 1px solid var(--color-border); padding-top: 1.25rem; margin: 0;
}
.ds-hero-meta span { white-space: nowrap; }
.ds-hero-meta .dot { color: var(--color-border); }

/* Signature: the layered system schema (subject-specific, one teal node) */
.ds-schema {
  position: relative; background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.1rem);
}
.ds-schema::before {
  content: ""; position: absolute; top: -1px; right: -1px; width: 44px; height: 44px;
  border-top: 2px solid var(--color-accent); border-right: 2px solid var(--color-accent);
  border-top-right-radius: var(--radius);
}
.ds-schema-title {
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--color-text-secondary); margin: 0 0 1.35rem; font-weight: 500;
}
.ds-stack { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.ds-layer {
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 1rem; align-items: baseline;
  padding: .85rem 0; border-top: 1px solid var(--color-border); position: relative;
}
.ds-layer:first-child { border-top: 0; padding-top: 0; }
.ds-layer .lbl { font-family: var(--font-body); font-weight: 600; font-size: .95rem; color: var(--color-text-primary); }
.ds-layer .meta { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .06em; text-transform: uppercase; color: var(--color-text-secondary); text-align: right; }
.ds-layer.is-node { margin-inline: calc(-1 * clamp(1.5rem, 3vw, 2.1rem)); padding-inline: clamp(1.5rem, 3vw, 2.1rem); background: color-mix(in srgb, var(--color-accent) 8%, transparent); border-top-color: var(--color-accent); }
.ds-layer.is-node .lbl { color: var(--color-accent); }
.ds-layer.is-node + .ds-layer { border-top-color: var(--color-accent); }

@media (min-width: 940px) {
  .ds-hero-grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); }
}

/* =============================================================================
   2 · ZİHNİYET — capabilities catalogue + diagnostic questions
============================================================================= */
.ds-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--color-border); }
.ds-list li { position: relative; padding: 1rem 0 1rem 1.9rem; border-bottom: 1px solid var(--color-border); color: var(--color-text-secondary); max-width: 78ch; }
.ds-list li strong { color: var(--color-text-primary); font-weight: 600; }
.ds-list li::before {
  content: ""; position: absolute; left: 0; top: 1.35rem; width: 9px; height: 9px;
  border: 1.5px solid var(--color-accent); border-radius: 50%;
}
.ds-ask {
  margin-top: clamp(2.5rem, 5vw, 3.5rem); background: var(--color-surface);
  border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: clamp(1.5rem, 3.5vw, 2.4rem);
}
.ds-ask h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.05rem; margin: 0 0 1.25rem; }
.ds-questions { list-style: none; margin: 0; padding: 0; counter-reset: q; display: grid; gap: 0; }
.ds-questions li {
  counter-increment: q; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 1rem;
  padding: 1rem 0; border-top: 1px solid var(--color-border); color: var(--color-text-primary); font-size: .98rem;
}
.ds-questions li:first-child { border-top: 0; padding-top: 0; }
.ds-questions li::before {
  content: counter(q, decimal-leading-zero); font-family: var(--font-mono); font-size: .78rem;
  letter-spacing: .04em; color: var(--color-accent); padding-top: .12rem;
}
.ds-close { margin-top: clamp(2rem, 4vw, 2.5rem); max-width: 62ch; color: var(--color-text-secondary); }
.ds-close strong { color: var(--color-text-primary); font-weight: 600; }

/* =============================================================================
   3 · GÖRÜNMEYEN AYRINTILAR — restrained facts, no alarm colours
============================================================================= */
.ds-facts { display: grid; gap: 1.5rem; }
.ds-fact { border-top: 1px solid var(--color-border); padding-top: 1.25rem; }
.ds-fact h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.02rem; margin: 0 0 .4rem; }
.ds-fact p { margin: 0; color: var(--color-text-secondary); font-size: .95rem; }
.ds-fact p .lift { color: var(--color-text-primary); }
.ds-pull {
  margin-top: clamp(2.5rem, 5vw, 3.5rem); border-left: 2px solid var(--color-accent);
  padding: .3rem 0 .3rem 1.4rem; font-family: var(--font-display); font-weight: 500;
  font-size: clamp(1.25rem, 1rem + 1vw, 1.6rem); line-height: 1.3; color: var(--color-text-primary); max-width: 46ch;
}
@media (min-width: 720px) { .ds-facts { grid-template-columns: repeat(2, 1fr); gap: 2.25rem 3rem; } }

/* =============================================================================
   4 · MİMARİ YAKLAŞIM / SONUÇLAR — gains grid
============================================================================= */
.ds-gains { display: grid; gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.ds-gain { background: var(--color-surface); padding: clamp(1.35rem, 3vw, 1.9rem); display: grid; gap: .5rem; align-content: start; }
.ds-gain h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.02rem; margin: 0; }
.ds-gain p { margin: 0; color: var(--color-text-secondary); font-size: .92rem; }
.ds-aim { margin-top: clamp(2rem, 4vw, 2.75rem); max-width: 64ch; color: var(--color-text-secondary); }
.ds-aim strong { color: var(--color-text-primary); font-weight: 600; }
@media (min-width: 640px) { .ds-gains { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .ds-gains { grid-template-columns: repeat(3, 1fr); } }

/* =============================================================================
   5 · KARŞILAŞTIRMA — semantic table, spec-sheet feel, responsive to cards
============================================================================= */
.ds-compare { width: 100%; border-collapse: collapse; border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.ds-compare thead th {
  text-align: left; font-family: var(--font-mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--color-text-secondary); font-weight: 500; padding: 1rem 1.15rem; background: var(--color-surface);
  border-bottom: 1px solid var(--color-border); vertical-align: bottom;
}
.ds-compare thead th.is-ours { color: var(--color-accent); }
.ds-compare tbody th {
  text-align: left; font-family: var(--font-body); font-weight: 600; font-size: .92rem; color: var(--color-text-primary);
  padding: 1rem 1.15rem; vertical-align: top; width: 22%;
}
.ds-compare tbody td { padding: 1rem 1.15rem; font-size: .9rem; color: var(--color-text-secondary); vertical-align: top; }
.ds-compare tbody td.is-ours { color: var(--color-text-primary); background: color-mix(in srgb, var(--color-accent) 5%, transparent); }
.ds-compare tbody tr { border-top: 1px solid var(--color-border); }
.ds-compare-close { margin-top: clamp(2rem, 4vw, 2.75rem); max-width: 70ch; color: var(--color-text-secondary); }
.ds-compare-close strong { color: var(--color-text-primary); font-weight: 600; }

@media (max-width: 760px) {
  .ds-compare, .ds-compare thead, .ds-compare tbody, .ds-compare tr, .ds-compare th, .ds-compare td { display: block; }
  .ds-compare { border: 0; }
  .ds-compare thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .ds-compare tbody tr {
    border: 1px solid var(--color-border); border-radius: var(--radius); margin-bottom: 1rem;
    padding: .35rem 0; background: var(--color-surface);
  }
  .ds-compare tbody th { width: auto; padding: .85rem 1.15rem .5rem; font-size: 1rem; }
  .ds-compare tbody td { padding: .35rem 1.15rem .85rem 1.15rem; }
  .ds-compare tbody td::before {
    content: attr(data-label); display: block; font-family: var(--font-mono); font-size: .6rem;
    letter-spacing: .12em; text-transform: uppercase; color: var(--color-text-secondary); margin-bottom: .3rem;
  }
  .ds-compare tbody td.is-ours::before { color: var(--color-accent); }
  .ds-compare tbody td.is-ours { background: transparent; }
}

/* =============================================================================
   6 · KANIT / SEÇİLİ İŞLER — cases grid, OnlineMağazam featured
============================================================================= */
.ds-proof-lead { max-width: 68ch; color: var(--color-text-secondary); font-size: clamp(1.02rem, .98rem + .3vw, 1.18rem); line-height: 1.6; }
.ds-proof-lead strong { color: var(--color-text-primary); font-weight: 500; }
.ds-cases { display: grid; gap: 1.25rem; margin-top: clamp(2.25rem, 5vw, 3rem); }
.ds-case { position: relative; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: clamp(1.35rem, 3vw, 1.85rem); display: grid; gap: .65rem; align-content: start; }
.ds-case.is-featured { border-top: 2px solid var(--color-accent); }
.ds-case .sector { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--color-accent); margin: 0; }
.ds-case h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.2rem; line-height: 1.2; margin: 0; letter-spacing: -0.01em; }
.ds-case p { margin: 0; color: var(--color-text-secondary); font-size: .93rem; }
.ds-case .tags { margin: .35rem 0 0; padding: .85rem 0 0; border-top: 1px solid var(--color-border); font-family: var(--font-mono); font-size: .66rem; letter-spacing: .06em; color: var(--color-text-secondary); text-transform: uppercase; }
.ds-more { margin-top: 1.75rem; }
.ds-more a { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; }
@media (min-width: 820px) {
  .ds-cases { grid-template-columns: repeat(3, 1fr); }
  .ds-case.is-featured { grid-column: 1 / -1; grid-template-columns: minmax(0, 1.4fr) minmax(0, 2fr); gap: .65rem 2.5rem; align-items: start; }
  .ds-case.is-featured .sector { grid-column: 1; }
  .ds-case.is-featured h3 { grid-column: 1; }
  .ds-case.is-featured p { grid-column: 2; grid-row: 1 / span 3; }
  .ds-case.is-featured .tags { grid-column: 1 / -1; }
}

/* =============================================================================
   7 · KAPSAM / ÇIKTI / TEKNOLOJİ
============================================================================= */
.ds-sub { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--color-text-secondary); margin: clamp(2.5rem, 5vw, 3.25rem) 0 1.25rem; }
.ds-sub:first-of-type { margin-top: 0; }

/* Services accordion */
.ds-scope { border-top: 1px solid var(--color-border); }
.ds-scope details { border-bottom: 1px solid var(--color-border); }
.ds-scope summary { list-style: none; cursor: pointer; padding: 1.35rem 2.5rem 1.35rem 0; position: relative; display: grid; gap: .3rem; }
.ds-scope summary::-webkit-details-marker { display: none; }
.ds-scope summary h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.05rem; margin: 0; color: var(--color-text-primary); }
.ds-scope summary .plus { position: absolute; right: .25rem; top: 1.5rem; width: 15px; height: 15px; color: var(--color-text-secondary); }
.ds-scope summary .plus::before, .ds-scope summary .plus::after { content: ""; position: absolute; background: currentColor; }
.ds-scope summary .plus::before { left: 0; right: 0; top: 7px; height: 1.5px; }
.ds-scope summary .plus::after { top: 0; bottom: 0; left: 7px; width: 1.5px; transition: transform .2s ease; }
.ds-scope details[open] summary .plus::after { transform: scaleY(0); }
.ds-scope .panel { padding: 0 2.5rem 1.6rem 0; color: var(--color-text-secondary); max-width: 76ch; }
.ds-scope .panel p { margin: 0; font-size: .93rem; }
@media (prefers-reduced-motion: reduce) { .ds-scope summary .plus::after { transition: none; } }

/* Outputs — tag pills */
.ds-tags { display: flex; flex-wrap: wrap; gap: .55rem; margin: 0; padding: 0; list-style: none; }
.ds-tags li {
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .04em; color: var(--color-text-secondary);
  border: 1px solid var(--color-border); border-radius: 999px; padding: .45rem .85rem; background: var(--color-surface);
}
.ds-tags.is-tech li { text-transform: none; }
.ds-scope-note { margin: 1.25rem 0 0; font-size: .88rem; color: var(--color-text-secondary); font-style: italic; max-width: 72ch; }

/* =============================================================================
   8 · SÜREÇ (numbered timeline — a real sequence) + NEDEN BİZ
============================================================================= */
.ds-timeline { display: grid; gap: 0; }
.ds-step { display: grid; grid-template-columns: auto auto 1fr; gap: 0 1.4rem; padding-bottom: 2.25rem; position: relative; }
.ds-step:last-child { padding-bottom: 0; }
.ds-step .num { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .06em; color: var(--color-text-secondary); padding-top: .15rem; }
.ds-step .rail { position: relative; width: 9px; }
.ds-step .dot { width: 9px; height: 9px; border-radius: 50%; border: 1.5px solid var(--color-text-secondary); background: var(--color-background); margin: .35rem 0 0; }
.ds-step:first-child .dot { border-color: var(--color-accent); background: var(--color-accent); }
.ds-step .line { position: absolute; top: 1rem; bottom: -2.25rem; left: 4px; width: 1px; background: var(--color-border); }
.ds-step:last-child .line { display: none; }
.ds-step .step-body { display: grid; gap: .4rem; padding-bottom: .25rem; }
.ds-step h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.05rem; margin: 0; }
.ds-step p { margin: 0; color: var(--color-text-secondary); font-size: .93rem; max-width: 70ch; }

.ds-why { display: grid; gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; margin-top: clamp(3rem, 6vw, 4rem); }
.ds-why-item { background: var(--color-surface); padding: clamp(1.35rem, 3vw, 1.9rem); display: grid; gap: .5rem; align-content: start; }
.ds-why-item h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.02rem; margin: 0; }
.ds-why-item p { margin: 0; color: var(--color-text-secondary); font-size: .92rem; }
@media (min-width: 640px) { .ds-why { grid-template-columns: repeat(2, 1fr); } }

/* =============================================================================
   9 & 12 · CTA BANDS
============================================================================= */
.ds-cta { border-top: 1px solid var(--color-border); padding-block: clamp(3.5rem, 7vw, 5.5rem); }
.ds-cta-inner { border: 1px solid var(--color-border); border-radius: var(--radius); background: var(--color-surface); padding: clamp(2rem, 5vw, 3.5rem); display: grid; gap: 1.25rem; max-width: 72ch; }
.ds-cta-inner h2 { max-width: 26ch; }
.ds-cta-inner p { margin: 0; color: var(--color-text-secondary); max-width: 62ch; }
.ds-cta-inner .ds-actions { margin-top: .35rem; }
.ds-closing .ds-cta-inner { background: var(--color-surface-elevated); }

/* =============================================================================
   10 · SSS — grouped FAQ accordion
============================================================================= */
.ds-faq-group { margin-bottom: clamp(2rem, 4vw, 2.75rem); }
.ds-faq-group:last-child { margin-bottom: 0; }
.ds-faq-group > h3 { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--color-text-secondary); margin: 0 0 .5rem; }
.ds-faq { border-top: 1px solid var(--color-border); }
.ds-faq details { border-bottom: 1px solid var(--color-border); }
.ds-faq summary { list-style: none; cursor: pointer; padding: 1.35rem 2.5rem 1.35rem 0; position: relative; font-family: var(--font-body); font-weight: 600; font-size: 1.02rem; color: var(--color-text-primary); }
.ds-faq summary::-webkit-details-marker { display: none; }
.ds-faq summary .plus { position: absolute; right: .25rem; top: 1.4rem; width: 15px; height: 15px; color: var(--color-text-secondary); }
.ds-faq summary .plus::before, .ds-faq summary .plus::after { content: ""; position: absolute; background: currentColor; }
.ds-faq summary .plus::before { left: 0; right: 0; top: 7px; height: 1.5px; }
.ds-faq summary .plus::after { top: 0; bottom: 0; left: 7px; width: 1.5px; transition: transform .2s ease; }
.ds-faq details[open] summary .plus::after { transform: scaleY(0); }
.ds-faq .panel { padding: 0 2.5rem 1.6rem 0; color: var(--color-text-secondary); max-width: 76ch; }
.ds-faq .panel p { margin: 0; }
@media (prefers-reduced-motion: reduce) { .ds-faq summary .plus::after { transition: none; } }

/* =============================================================================
   11 · REHBERLER — placeholder (guides not yet published; no dead links)
============================================================================= */
.ds-guides { display: grid; gap: 0; border-top: 1px solid var(--color-border); }
.ds-guide { display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center; padding: 1.15rem 0; border-bottom: 1px solid var(--color-border); }
.ds-guide span.title { font-family: var(--font-body); font-weight: 500; font-size: 1rem; color: var(--color-text-secondary); max-width: 70ch; }
.ds-guide span.soon { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: var(--color-text-secondary); border: 1px solid var(--color-border); border-radius: 999px; padding: .3rem .6rem; white-space: nowrap; }

/* =============================================================================
   Progressive reveal (JS-driven, restrained). No JS / reduced-motion = fully shown.
============================================================================= */
.ds-reveal { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  html.ds-js .ds-reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
  html.ds-js .ds-reveal.is-in { opacity: 1; transform: none; }
}