/* =============================================================================
   Avielon Studio · develop-performance.css
   Page: Yazılım → Performans ve ölçeklenebilirlik
   Namespaced .dp-* · purely additive · references tokens only (no hardcoded hex).
   Never touches tokens.css / site.css / site-chrome.js.
   Load after site.css via the view's @@section Styles.
============================================================================= */

/* ---- Generic section rhythm — hairline dividers encode the document structure -- */
.dp-section { padding-block: var(--section-y); border-top: 1px solid var(--color-border); }
.dp-head { display: grid; gap: 1.1rem; max-width: 64ch; margin-bottom: clamp(2.5rem, 5vw, 3.75rem); }
.dp-head .lead { margin: 0; }
.dp-eyebrow { display: flex; align-items: center; gap: .7rem; }

/* ---- Hero -------------------------------------------------------------------- */
.dp-hero { padding-block: clamp(3.5rem, 7vw, 6.5rem) clamp(3.5rem, 7vw, 6rem); }
.dp-hero-grid { display: grid; gap: clamp(2.5rem, 5vw, 4rem); align-items: center; }
.dp-hero-copy { display: grid; gap: 1.5rem; }
.dp-hero-copy .eyebrow { display: flex; align-items: center; gap: .7rem; }
.dp-hero h1 { max-width: 16ch; }
.dp-hero .lead { margin: 0; }
.dp-actions { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }
.dp-note { font-size: .875rem; line-height: 1.55; color: var(--color-text-secondary); font-style: italic; max-width: 52ch; margin: 0; }
.dp-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; }
.dp-hero-meta span { white-space: nowrap; }
.dp-hero-meta .dot { color: var(--color-border); }

/* Spec aside — the measurement frame; corner-mark = single teal accent */
.dp-spec { position: relative; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.25rem); }
.dp-spec::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); }
.dp-spec h2 { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--color-text-secondary); margin: 0 0 1.4rem; font-weight: 500; }
.dp-spec dl { margin: 0; display: grid; gap: 0; }
.dp-spec .row { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.4fr); gap: 1rem; padding: .85rem 0; border-top: 1px solid var(--color-border); align-items: baseline; }
.dp-spec .row:first-of-type { border-top: 0; padding-top: 0; }
.dp-spec dt { font-family: var(--font-mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: var(--color-text-secondary); margin: 0; }
.dp-spec dd { margin: 0; font-size: .9rem; color: var(--color-text-primary); }

/* ---- Section 2 · mindset — what a good study ensures ------------------------- */
.dp-ensures { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--color-border); display: grid; gap: 0; }
.dp-ensures li { position: relative; padding: 1.1rem 0 1.1rem 1.6rem; border-bottom: 1px solid var(--color-border); color: var(--color-text-secondary); max-width: 78ch; }
.dp-ensures li::before { content: ""; position: absolute; left: 0; top: 1.55em; width: 6px; height: 6px; border-radius: 50%; background: var(--color-text-secondary); }
.dp-ensures li strong { color: var(--color-text-primary); font-weight: 600; }
.dp-closing-note { margin-top: clamp(2rem, 4vw, 2.75rem); max-width: 68ch; color: var(--color-text-secondary); }
.dp-closing-note strong { color: var(--color-text-primary); font-weight: 500; }

/* ---- Section 3 · facts (pain points) — restrained, no alarm colours ---------- */
.dp-facts { display: grid; gap: 1.5rem; }
.dp-fact { border-top: 1px solid var(--color-border); padding-top: 1.25rem; }
.dp-fact h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.02rem; margin: 0 0 .4rem; }
.dp-fact p { margin: 0; color: var(--color-text-secondary); font-size: .95rem; }
.dp-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(1.2rem, 1rem + 1vw, 1.55rem); line-height: 1.3; color: var(--color-text-primary); max-width: 48ch; }
@media (min-width: 720px) { .dp-facts { grid-template-columns: repeat(2, 1fr); gap: 2.25rem 3rem; } }

/* ---- Section 4 · approach — a catalogue of principles (numbered labels) ------- */
.dp-approach { display: grid; gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.dp-approach-item { background: var(--color-surface); padding: clamp(1.35rem, 3vw, 1.9rem); display: grid; gap: .5rem; align-content: start; }
.dp-approach-item .num { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; color: var(--color-text-secondary); }
.dp-approach-item h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.02rem; margin: 0; }
.dp-approach-item p { margin: 0; color: var(--color-text-secondary); font-size: .92rem; }
@media (min-width: 640px) { .dp-approach { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .dp-approach { grid-template-columns: repeat(3, 1fr); } }

/* ---- Section 5 · comparison — two columns; right column featured ------------- */
.dp-compare { border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.dp-compare-head { display: none; }
.dp-pair { display: grid; grid-template-columns: 1fr; }
.dp-pair > div { padding: 1.05rem clamp(1.1rem, 3vw, 1.5rem); border-top: 1px solid var(--color-border); }
.dp-pair:first-of-type > div { border-top: 0; }
.dp-pair-a { background: var(--color-background); }
.dp-pair-b { background: var(--color-surface); border-left: 2px solid var(--color-accent); }
.dp-pair p { margin: 0; font-size: .92rem; color: var(--color-text-secondary); }
.dp-pair-b p { color: var(--color-text-primary); }
.dp-pair-lab { display: block; font-family: var(--font-mono); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; color: var(--color-text-secondary); margin-bottom: .35rem; }
.dp-pair-b .dp-pair-lab { color: var(--color-accent); }
.dp-compare-close { margin-top: clamp(2rem, 4vw, 2.75rem); max-width: 70ch; color: var(--color-text-secondary); }
.dp-compare-close strong { color: var(--color-text-primary); font-weight: 600; }
@media (min-width: 760px) {
  .dp-compare-head { display: grid; grid-template-columns: 1fr 1fr; }
  .dp-compare-head > div { padding: .9rem clamp(1.1rem, 3vw, 1.5rem); font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--color-text-secondary); border-bottom: 1px solid var(--color-border); }
  .dp-compare-head .h-accent { color: var(--color-accent); border-left: 2px solid var(--color-accent); }
  .dp-pair { grid-template-columns: 1fr 1fr; }
  .dp-pair > div { border-top: 1px solid var(--color-border); }
  .dp-pair-lab { display: none; }
}

/* ---- Section 6 · measurable results + scenario + case ------------------------ */
.dp-metrics { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 clamp(2rem, 4vw, 2.75rem); padding: 0; list-style: none; }
.dp-metrics 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: .4rem .8rem; }
.dp-result-grid { display: grid; gap: clamp(1.75rem, 4vw, 2.5rem); }
.dp-scenario-h { font-family: var(--font-body); font-weight: 600; font-size: 1.05rem; margin: 0 0 1rem; }
.dp-scenario-lead { margin: 0 0 1.25rem; color: var(--color-text-secondary); max-width: 70ch; }
.dp-scenario { margin: 0; padding: 0; list-style: none; counter-reset: dpc; display: grid; gap: .6rem; }
.dp-scenario li { position: relative; padding-left: 2.1rem; color: var(--color-text-secondary); font-size: .93rem; }
.dp-scenario li::before { counter-increment: dpc; content: counter(dpc, decimal-leading-zero); position: absolute; left: 0; top: .05em; font-family: var(--font-mono); font-size: .74rem; color: var(--color-text-secondary); }
.dp-scenario-close { margin: 1.25rem 0 0; color: var(--color-text-secondary); max-width: 70ch; }
.dp-scenario-close strong { color: var(--color-text-primary); font-weight: 500; }
.dp-case { position: relative; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2rem); display: grid; gap: .7rem; align-content: start; }
.dp-case .sector { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--color-accent); margin: 0; }
.dp-case h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.3rem; letter-spacing: -0.01em; margin: 0; }
.dp-case p { margin: 0; color: var(--color-text-secondary); font-size: .94rem; }
.dp-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; }
@media (min-width: 900px) { .dp-result-grid { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: start; } }

/* ---- Section 7 · scope — accordion catalogue -------------------------------- */
.dp-scope { border-top: 1px solid var(--color-border); }
.dp-scope details { border-bottom: 1px solid var(--color-border); }
.dp-scope summary { list-style: none; cursor: pointer; padding: 1.35rem 2.5rem 1.35rem 0; position: relative; display: grid; gap: .3rem; }
.dp-scope summary::-webkit-details-marker { display: none; }
.dp-scope summary h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.05rem; margin: 0; color: var(--color-text-primary); }
.dp-scope summary p { margin: 0; color: var(--color-text-secondary); font-size: .9rem; max-width: 72ch; }
.dp-scope summary .plus { position: absolute; right: .25rem; top: 1.5rem; width: 15px; height: 15px; color: var(--color-text-secondary); }
.dp-scope summary .plus::before, .dp-scope summary .plus::after { content: ""; position: absolute; background: currentColor; }
.dp-scope summary .plus::before { left: 0; right: 0; top: 7px; height: 1.5px; }
.dp-scope summary .plus::after { top: 0; bottom: 0; left: 7px; width: 1.5px; transition: transform .2s ease; }
.dp-scope details[open] summary .plus::after { transform: scaleY(0); }
.dp-scope .panel { padding: 0 2.5rem 1.6rem 0; }
.dp-scope .panel ul { margin: 0; padding: 0; list-style: none; display: grid; gap: .5rem; }
.dp-scope .panel li { position: relative; padding-left: 1.1rem; font-size: .92rem; color: var(--color-text-secondary); }
.dp-scope .panel li::before { content: ""; position: absolute; left: 0; top: .62em; width: 5px; height: 5px; border-radius: 50%; background: var(--color-border); }
.dp-scope .panel .note { margin: 1rem 0 0; font-size: .86rem; color: var(--color-text-secondary); font-style: italic; }
@media (min-width: 760px) { .dp-scope .panel ul { grid-template-columns: repeat(2, 1fr); gap: .5rem 2.5rem; } }
@media (prefers-reduced-motion: reduce) { .dp-scope summary .plus::after { transition: none; } }

/* ---- CTA bands (sections 8 & 13) -------------------------------------------- */
.dp-cta { border-top: 1px solid var(--color-border); padding-block: clamp(3.5rem, 7vw, 5.5rem); }
.dp-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: 70ch; }
.dp-cta-inner h2 { max-width: 26ch; }
.dp-cta-inner p { margin: 0; color: var(--color-text-secondary); max-width: 62ch; }
.dp-cta-inner .dp-actions { margin-top: .35rem; }
.dp-cta-inner .dp-note { margin-top: -.35rem; }
.dp-closing .dp-cta-inner { background: var(--color-surface-elevated); }

/* ---- Section 9 · process timeline + why us ---------------------------------- */
.dp-timeline { display: grid; gap: 0; margin-bottom: clamp(3rem, 6vw, 4.5rem); }
.dp-step { display: grid; grid-template-columns: auto auto 1fr; gap: 1.25rem 1.25rem; padding-bottom: 2.25rem; }
.dp-step:last-child { padding-bottom: 0; }
.dp-step .num { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .06em; color: var(--color-text-secondary); padding-top: .2rem; }
.dp-step .rail { position: relative; }
.dp-step .dot { width: 9px; height: 9px; border-radius: 50%; border: 1.5px solid var(--color-text-secondary); background: var(--color-background); margin: .4rem auto 0; }
.dp-step:first-child .dot { border-color: var(--color-accent); background: var(--color-accent); }
.dp-step .line { position: absolute; top: 1.1rem; bottom: -2.25rem; left: 50%; width: 1px; background: var(--color-border); transform: translateX(-50%); }
.dp-step:last-child .line { display: none; }
.dp-step .step-body { display: grid; gap: .35rem; }
.dp-step h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.05rem; margin: 0; }
.dp-step p { margin: 0; color: var(--color-text-secondary); font-size: .93rem; max-width: 70ch; }

.dp-why { display: grid; gap: 1px; background: var(--color-border); border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.dp-why-item { background: var(--color-surface); padding: clamp(1.35rem, 3vw, 1.9rem); display: grid; gap: .5rem; align-content: start; }
.dp-why-item h3 { font-family: var(--font-body); font-weight: 600; font-size: 1.02rem; margin: 0; }
.dp-why-item p { margin: 0; color: var(--color-text-secondary); font-size: .92rem; }
.dp-why-head { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--color-text-secondary); margin: 0 0 1.25rem; }
@media (min-width: 640px) { .dp-why { grid-template-columns: repeat(2, 1fr); } }

/* ---- Section 10 · outputs --------------------------------------------------- */
.dp-outputs { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--color-border); }
.dp-outputs li { position: relative; padding: .95rem 0 .95rem 1.9rem; border-bottom: 1px solid var(--color-border); color: var(--color-text-secondary); font-size: .95rem; }
.dp-outputs li::before { content: ""; position: absolute; left: 0; top: 1.35em; width: 11px; height: 6px; border-left: 1.5px solid var(--color-accent); border-bottom: 1.5px solid var(--color-accent); transform: rotate(-45deg); }
.dp-outputs-close { margin: clamp(1.75rem, 4vw, 2.5rem) 0 0; color: var(--color-text-secondary); max-width: 68ch; }
.dp-outputs-close strong { color: var(--color-text-primary); font-weight: 500; }
@media (min-width: 760px) { .dp-outputs { grid-template-columns: repeat(2, 1fr); column-gap: 2.5rem; } }

/* ---- Section 11 · FAQ ------------------------------------------------------- */
.dp-faq-group { margin-bottom: clamp(1.75rem, 4vw, 2.5rem); }
.dp-faq-group:last-child { margin-bottom: 0; }
.dp-faq-group > h3 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--color-text-secondary); margin: 0 0 .5rem; }
.dp-faq { border-top: 1px solid var(--color-border); }
.dp-faq details { border-bottom: 1px solid var(--color-border); }
.dp-faq summary { list-style: none; cursor: pointer; padding: 1.3rem 2.5rem 1.3rem 0; position: relative; font-family: var(--font-body); font-weight: 600; font-size: 1.02rem; color: var(--color-text-primary); }
.dp-faq summary::-webkit-details-marker { display: none; }
.dp-faq summary .plus { position: absolute; right: .25rem; top: 1.45rem; width: 15px; height: 15px; color: var(--color-text-secondary); }
.dp-faq summary .plus::before, .dp-faq summary .plus::after { content: ""; position: absolute; background: currentColor; }
.dp-faq summary .plus::before { left: 0; right: 0; top: 7px; height: 1.5px; }
.dp-faq summary .plus::after { top: 0; bottom: 0; left: 7px; width: 1.5px; transition: transform .2s ease; }
.dp-faq details[open] summary .plus::after { transform: scaleY(0); }
.dp-faq .panel { padding: 0 2.5rem 1.6rem 0; color: var(--color-text-secondary); max-width: 76ch; }
.dp-faq .panel p { margin: 0; }
@media (prefers-reduced-motion: reduce) { .dp-faq summary .plus::after { transition: none; } }

/* ---- Related (section 12) — markup present but commented in the view --------- */
.dp-related { display: grid; gap: 1.25rem; }
.dp-related a { display: grid; gap: .5rem; align-content: start; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: clamp(1.35rem, 3vw, 1.75rem); color: inherit; transition: border-color .2s ease, transform .2s ease; }
.dp-related a:hover { border-color: var(--color-text-secondary); color: inherit; transform: translateY(-2px); }
.dp-related h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.15rem; margin: 0; letter-spacing: -0.01em; }
.dp-related p { margin: 0; color: var(--color-text-secondary); font-size: .9rem; }
.dp-related .go { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--color-accent); margin-top: .25rem; }
@media (prefers-reduced-motion: reduce) { .dp-related a:hover { transform: none; } }
@media (min-width: 820px) { .dp-related { grid-template-columns: repeat(2, 1fr); } }

/* ---- Hero two-column at wide widths ----------------------------------------- */
@media (min-width: 940px) {
  .dp-hero-grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); }
}