/* ==========================================================================
   Legichain — bileşenler (DS bölüm 08, 10.1)
   ========================================================================== */

/* --------------------------------------------------------------------------
   İkonlar (tek outline ailesi, 24 grid, 1.75 stroke)
   -------------------------------------------------------------------------- */
.icon {
  width: var(--icon-md);
  height: var(--icon-md);
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: var(--icon-stroke);
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon--sm { width: var(--icon-sm); height: var(--icon-sm); }
.icon--lg { width: var(--icon-lg); height: var(--icon-lg); }

/* --------------------------------------------------------------------------
   Butonlar
   -------------------------------------------------------------------------- */
.btn {
  --btn-h: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: var(--btn-h);
  padding: .5rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font-size: var(--text-ui);
  line-height: var(--lh-ui);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--motion-fast) var(--ease-standard),
              border-color var(--motion-fast) var(--ease-standard),
              color var(--motion-fast) var(--ease-standard);
}
.btn .icon { width: var(--icon-sm); height: var(--icon-sm); }
.btn--sm { --btn-h: 2rem; padding: .25rem .75rem; font-size: var(--text-label); }
.btn--lg { --btn-h: 3rem; padding: .75rem 1.25rem; font-size: var(--text-body); }
.btn--block { width: 100%; }

.btn--primary {
  background: var(--action-primary-bg);
  color: var(--action-primary-fg);
  border-color: var(--accent-border);
}
.btn--primary:hover:not(:disabled):not([aria-disabled='true']) { background: var(--action-primary-hover); }
.btn--primary:active:not(:disabled):not([aria-disabled='true']) { background: var(--action-primary-pressed); }

.btn--secondary {
  background: var(--surface-default);
  color: var(--text-primary);
  border-color: var(--border-control);
}
.btn--secondary:hover:not(:disabled):not([aria-disabled='true']) { background: var(--surface-hover); }
.btn--secondary:active:not(:disabled):not([aria-disabled='true']) { background: var(--surface-pressed); }

.btn--tertiary {
  background: transparent;
  color: var(--accent-fg);
  padding-inline: .625rem;
}
.btn--tertiary:hover:not(:disabled):not([aria-disabled='true']) { background: var(--accent-subtle); }
.btn--tertiary:active:not(:disabled):not([aria-disabled='true']) { background: var(--surface-pressed); }

.btn--danger {
  background: var(--danger-bg);
  color: var(--danger-fg);
  border-color: currentColor;
}

.btn:disabled,
.btn[aria-disabled='true'] {
  background: var(--disabled-bg);
  color: var(--disabled-fg);
  border-color: var(--border-subtle);
}

.btn.is-loading { position: relative; color: transparent; }
.btn.is-loading::after {
  content: '';
  position: absolute;
  width: 1rem; height: 1rem;
  border: 2px solid var(--action-primary-fg);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
.btn--secondary.is-loading::after { border-color: var(--text-primary); border-right-color: transparent; }
@keyframes spin { to { transform: rotate(360deg); } }

/* İkon buton */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem; height: 2.5rem;
  border-radius: var(--radius-control);
  border: 1px solid transparent;
  color: var(--text-primary);
  transition: background-color var(--motion-fast) var(--ease-standard), border-color var(--motion-fast) var(--ease-standard);
}
.icon-btn:hover { background: var(--surface-hover); }
.icon-btn:active { background: var(--surface-pressed); }
.icon-btn--bordered { border-color: var(--border-control); background: var(--surface-default); }

/* Bağlantı-buton (standalone link, ok ile) */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--accent-fg);
}
.link-arrow .icon { width: var(--icon-sm); height: var(--icon-sm); transition: transform var(--motion-fast) var(--ease-standard); }
.link-arrow:hover { text-decoration: underline; text-decoration-thickness: 1px; }
.link-arrow:hover .icon { transform: translateX(2px); }
@media (prefers-reduced-motion: reduce) { .link-arrow:hover .icon { transform: none; } }

.link-plain { color: inherit; text-decoration: none; }
.link-plain:hover { color: var(--accent-fg); text-decoration: underline; }

/* --------------------------------------------------------------------------
   Badge (metin + ikon; salt renkle anlam yok)
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  padding: .125rem .5rem;
  border-radius: var(--radius-sm);
  font-size: var(--text-label);
  line-height: var(--lh-label);
  font-weight: 500;
  white-space: nowrap;
  background: var(--neutral-bg);
  color: var(--neutral-fg);
  border: 1px solid transparent;
}
.badge .icon { width: .875rem; height: .875rem; }
.badge--neutral { background: var(--neutral-bg); color: var(--neutral-fg); }
.badge--info    { background: var(--info-bg);    color: var(--info-fg); }
.badge--success { background: var(--success-bg); color: var(--success-fg); }
.badge--warning { background: var(--warning-bg); color: var(--warning-fg); }
.badge--danger  { background: var(--danger-bg);  color: var(--danger-fg); }
.badge--critical { background: var(--danger-bg); color: var(--danger-fg); border-color: currentColor; }
.badge--accent  { background: var(--accent-subtle); color: var(--accent-fg); }
.badge--outline { background: transparent; border-color: var(--border-strong); color: var(--text-secondary); }

/* "Örnek veri" etiketi: sentetik demo verisini canlı sonuçtan ayırır */
.sample-tag {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  padding: .125rem .5rem;
  border: 1px dashed var(--border-control);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  line-height: var(--lh-caption);
  color: var(--text-secondary);
  background: var(--surface-default);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Kartlar
   -------------------------------------------------------------------------- */
.card {
  background: var(--surface-default);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
}
.card--flush { padding: 0; overflow: hidden; }
.card--interactive { transition: border-color var(--motion-fast) var(--ease-standard), background-color var(--motion-fast) var(--ease-standard); }
.card--interactive:hover { border-color: var(--border-strong); background: var(--surface-hover); }
.card__eyebrow { margin-bottom: var(--space-3); }
.card__title { font-size: var(--text-h4); line-height: var(--lh-h4); font-weight: 700; letter-spacing: var(--tracking-h4); }
.card__title + p { margin-top: var(--space-2); }
.card__icon {
  width: 2.5rem; height: 2.5rem;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-control);
  color: var(--accent-fg);
  background: var(--bg-subtle);
  margin-bottom: var(--space-4);
}
.card > .link-arrow, .card > .btn { margin-top: var(--space-4); }

/* Panel: ürün bileşenlerini taşıyan opak çalışma alanı */
.panel {
  background: var(--surface-default);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.panel__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-subtle);
}
.panel__title {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: var(--text-ui); line-height: var(--lh-ui); font-weight: 500;
}
.panel__body { padding: var(--space-5); }
.panel__foot {
  padding: .75rem 1rem;
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-caption);
  line-height: var(--lh-caption);
  color: var(--text-muted);
}
.panel__section { padding: var(--space-4) var(--space-5); }
.panel__section + .panel__section { border-top: 1px solid var(--border-subtle); }
.panel__section-title {
  font-size: var(--text-label); line-height: var(--lh-label); font-weight: 500;
  color: var(--text-secondary); margin-bottom: var(--space-3);
}

/* --------------------------------------------------------------------------
   Anahtar-değer listeleri (özet alanları)
   -------------------------------------------------------------------------- */
.kv { display: grid; gap: .5rem .75rem; grid-template-columns: max-content 1fr; font-size: var(--text-ui); line-height: var(--lh-ui); }
.kv dt { color: var(--text-secondary); }
.kv dd { color: var(--text-primary); overflow-wrap: anywhere; }
.kv--stack { grid-template-columns: 1fr; gap: .125rem; }
.kv--stack dt { font-size: var(--text-caption); line-height: var(--lh-caption); color: var(--text-muted); margin-top: .5rem; }
.kv--stack dt:first-child { margin-top: 0; }
.kv-grid { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); }
.kv-grid .kv-item dt { font-size: var(--text-caption); line-height: var(--lh-caption); color: var(--text-muted); margin-bottom: .125rem; }
.kv-grid .kv-item dd { font-size: var(--text-ui); line-height: var(--lh-ui); font-weight: 500; }

/* --------------------------------------------------------------------------
   Formlar
   -------------------------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: .375rem; }
.field__label { font-size: var(--text-ui); line-height: var(--lh-ui); font-weight: 500; }
.field__label .req { color: var(--text-secondary); font-weight: 400; }
.field__help { font-size: var(--text-label); line-height: var(--lh-label); color: var(--text-muted); }
.field__error {
  display: none;
  align-items: flex-start;
  gap: .375rem;
  font-size: var(--text-label); line-height: var(--lh-label);
  color: var(--danger-fg);
}
.field__error .icon { width: .875rem; height: .875rem; margin-top: .15rem; }
.field.is-invalid .field__error { display: flex; }

.input, .select, .textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: .625rem .75rem;
  background: var(--surface-default);
  color: var(--text-primary);
  border: 1px solid var(--border-control);
  border-radius: var(--radius-control);
  font-size: var(--text-body);
  line-height: 1.4;
  transition: border-color var(--motion-fast) var(--ease-standard), background-color var(--motion-fast) var(--ease-standard);
}
.input::placeholder, .textarea::placeholder { color: var(--text-muted); opacity: 1; }
.input:hover, .select:hover, .textarea:hover { border-color: var(--text-secondary); }
.input:focus-visible, .select:focus-visible, .textarea:focus-visible { outline-offset: 2px; border-color: var(--accent-border); }
.field.is-invalid .input, .field.is-invalid .select, .field.is-invalid .textarea { border-color: var(--danger-fg); }
.input:disabled, .select:disabled, .textarea:disabled { background: var(--disabled-bg); color: var(--disabled-fg); border-color: var(--border-subtle); }
.textarea { min-height: 7rem; resize: vertical; }
.input--mono { font-family: var(--font-mono); font-size: var(--text-code); }
.input--sm { min-height: 2.5rem; padding: .375rem .625rem; font-size: var(--text-ui); }

.select-wrap { position: relative; }
.select { appearance: none; padding-right: 2.5rem; }
.select-wrap .icon { position: absolute; right: .75rem; top: 50%; transform: translateY(-50%); pointer-events: none; color: var(--text-secondary); }

.input-wrap { position: relative; }
.input-wrap > .icon { position: absolute; left: .75rem; top: 50%; transform: translateY(-50%); color: var(--text-secondary); pointer-events: none; }
.input-wrap .input { padding-left: 2.5rem; }

.checkbox { display: flex; gap: .625rem; align-items: flex-start; font-size: var(--text-ui); line-height: var(--lh-ui); cursor: pointer; }
.checkbox input { width: 1.125rem; height: 1.125rem; margin: .1rem 0 0; accent-color: var(--accent-fg); flex: none; }

.form-status {
  display: none;
  gap: .625rem;
  align-items: flex-start;
  padding: .75rem 1rem;
  border-radius: var(--radius-control);
  border: 1px solid transparent;
  font-size: var(--text-ui); line-height: var(--lh-ui);
}
.form-status.is-visible { display: flex; }
.form-status--info { background: var(--info-bg); color: var(--info-fg); border-color: currentColor; }
.form-status--success { background: var(--success-bg); color: var(--success-fg); border-color: currentColor; }
.form-status--error { background: var(--danger-bg); color: var(--danger-fg); border-color: currentColor; }
.form-status .icon { margin-top: .1rem; }
.form-status ul { margin-top: .25rem; }

/* --------------------------------------------------------------------------
   Tablolar
   -------------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-card);
  background: var(--surface-default);
  -webkit-overflow-scrolling: touch;
}
.table-wrap__label {
  padding: .5rem 1rem;
  font-size: var(--text-caption); line-height: var(--lh-caption); color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-subtle);
}
.table { width: 100%; font-size: var(--text-ui); line-height: var(--lh-ui); }
.table th, .table td { padding: .75rem 1rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border-subtle); }
.table th { font-weight: 500; color: var(--text-secondary); background: var(--bg-subtle); white-space: nowrap; position: sticky; top: 0; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: var(--surface-hover); }
.table td.num, .table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table .th-row { font-weight: 500; color: var(--text-primary); white-space: normal; background: transparent; position: static; }
.table--compact th, .table--compact td { padding: .5rem .75rem; }
.table--plain { border: 0; }
.table-wrap--plain { border: 0; border-radius: 0; background: transparent; }
.table caption { text-align: left; padding: .75rem 1rem; font-size: var(--text-caption); color: var(--text-muted); caption-side: bottom; }

/* --------------------------------------------------------------------------
   Sekmeler
   -------------------------------------------------------------------------- */
.tabs { display: flex; gap: .25rem; border-bottom: 1px solid var(--border-subtle); overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  position: relative;
  padding: .625rem .875rem;
  font-size: var(--text-ui); line-height: var(--lh-ui); font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transition: color var(--motion-fast) var(--ease-standard), background-color var(--motion-fast) var(--ease-standard);
}
.tab:hover { color: var(--text-primary); background: var(--surface-hover); }
.tab[aria-selected='true'] { color: var(--text-primary); }
.tab[aria-selected='true']::after {
  content: ''; position: absolute; left: .5rem; right: .5rem; bottom: -1px; height: 2px; background: var(--accent-fg);
}
.tab-panel[hidden] { display: none; }

/* Segmentli sekme */
.segmented {
  display: inline-flex;
  padding: .25rem;
  gap: .25rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-control);
}
.segmented__btn {
  padding: .375rem .75rem;
  border-radius: calc(var(--radius-control) - 2px);
  font-size: var(--text-label); line-height: var(--lh-label); font-weight: 500;
  color: var(--text-secondary);
  display: inline-flex; align-items: center; gap: .375rem;
  transition: background-color var(--motion-fast) var(--ease-standard), color var(--motion-fast) var(--ease-standard);
}
.segmented__btn:hover { color: var(--text-primary); }
.segmented__btn[aria-selected='true'], .segmented__btn[aria-pressed='true'] { background: var(--surface-default); color: var(--text-primary); box-shadow: var(--shadow-card); border: 1px solid var(--border-subtle); }

/* Filtre çipleri */
.chip {
  display: inline-flex; align-items: center; gap: .375rem;
  padding: .375rem .75rem;
  border: 1px solid var(--border-control);
  border-radius: var(--radius-control);
  background: var(--surface-default);
  color: var(--text-primary);
  font-size: var(--text-label); line-height: var(--lh-label); font-weight: 500;
  transition: background-color var(--motion-fast) var(--ease-standard), border-color var(--motion-fast) var(--ease-standard);
}
.chip:hover { background: var(--surface-hover); }
.chip[aria-pressed='true'] { background: var(--accent-subtle); border-color: var(--accent-border); color: var(--accent-fg); }
.chip .count { font-family: var(--font-mono); font-size: var(--text-caption); color: var(--text-muted); }

/* --------------------------------------------------------------------------
   Akordeon (SSS) — native details
   -------------------------------------------------------------------------- */
.faq { border-top: 1px solid var(--border-subtle); }
.faq__item { border-bottom: 1px solid var(--border-subtle); }
.faq__q {
  list-style: none;
  display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4);
  padding: 1.125rem 0;
  font-size: var(--text-lead); line-height: 1.4; font-weight: 500;
  cursor: pointer;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q .icon { flex: none; margin-top: .25rem; color: var(--text-secondary); transition: transform var(--motion-base) var(--ease-standard); }
.faq__item[open] .faq__q .icon { transform: rotate(180deg); }
.faq__q:hover { color: var(--accent-fg); }
.faq__a { padding: 0 0 1.25rem; color: var(--text-secondary); max-width: var(--measure); }
.faq__a p + p { margin-top: .75rem; }

/* --------------------------------------------------------------------------
   Kod bloğu
   -------------------------------------------------------------------------- */
.code {
  position: relative;
  background: var(--code-bg);
  color: var(--code-fg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-control);
  overflow: hidden;
}
.code__bar {
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  padding: .375rem .5rem .375rem .875rem;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono); font-size: var(--text-caption); color: var(--text-muted);
}
.code pre { margin: 0; padding: 1rem; overflow-x: auto; tab-size: 2; }
.code code { font-size: var(--text-code); line-height: var(--lh-code); }
.code .tok-k { color: var(--chart-2); }
.code .tok-s { color: var(--chart-3); }
.code .tok-n { color: var(--chart-4); }
.code .tok-c { color: var(--text-muted); }
.copy-btn { display: inline-flex; align-items: center; gap: .375rem; padding: .25rem .5rem; border-radius: var(--radius-sm); font-family: var(--font-sans); font-size: var(--text-caption); font-weight: 500; color: var(--text-secondary); }
.copy-btn:hover { background: var(--surface-hover); color: var(--text-primary); }
.copy-btn .icon { width: .875rem; height: .875rem; }

/* --------------------------------------------------------------------------
   Breadcrumb
   -------------------------------------------------------------------------- */
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: .375rem; font-size: var(--text-label); line-height: var(--lh-label); color: var(--text-secondary); list-style: none; padding: 0; }
.breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent-fg); text-decoration: underline; }
.breadcrumb li + li::before { content: '/'; margin-right: .375rem; color: var(--border-control); }
.breadcrumb [aria-current='page'] { color: var(--text-primary); font-weight: 500; }

/* --------------------------------------------------------------------------
   Uyarı / not
   -------------------------------------------------------------------------- */
.notice {
  display: flex; gap: .75rem; align-items: flex-start;
  padding: .875rem 1rem;
  border-radius: var(--radius-control);
  border: 1px solid var(--border-subtle);
  background: var(--bg-subtle);
  font-size: var(--text-ui); line-height: var(--lh-ui);
  color: var(--text-secondary);
}
.notice .icon { margin-top: .1rem; color: var(--text-secondary); }
.notice--info { background: var(--info-bg); color: var(--info-fg); border-color: transparent; }
.notice--info .icon { color: inherit; }
.notice--warning { background: var(--warning-bg); color: var(--warning-fg); border-color: transparent; }
.notice--warning .icon { color: inherit; }
.notice p { max-width: none; }

/* --------------------------------------------------------------------------
   Kanıt bağlantısı motifi (DS 3.3): ortogonal 1.5 px çizgi, 4 px köşe
   -------------------------------------------------------------------------- */
.evidence-line { stroke: var(--border-strong); stroke-width: 1.5; fill: none; stroke-linejoin: round; stroke-linecap: round; }
.evidence-line.is-active { stroke: var(--accent-fg); }
.evidence-start { fill: var(--border-control); }
.evidence-start.is-active { fill: var(--accent-fg); }
.evidence-ring { fill: var(--surface-default); stroke: var(--border-control); stroke-width: 1.5; }
.evidence-ring.is-active { stroke: var(--accent-fg); }

/* --------------------------------------------------------------------------
   Adımlar (VerificationStepper / süreç listesi)
   -------------------------------------------------------------------------- */
.steps { list-style: none; padding: 0; display: flex; flex-direction: column; }
.step { position: relative; display: grid; grid-template-columns: 2rem 1fr; gap: 0 var(--space-4); padding-bottom: var(--space-6); }
.step:last-child { padding-bottom: 0; }
.step::before {
  content: ''; position: absolute; left: .9375rem; top: 2rem; bottom: 0;
  border-left: 1.5px solid var(--border-strong);
}
.step:last-child::before { display: none; }
.step__marker {
  width: 2rem; height: 2rem;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1.5px solid var(--border-control);
  border-radius: 50%;
  background: var(--surface-default);
  font-family: var(--font-mono); font-size: var(--text-label); font-weight: 500;
  color: var(--text-secondary);
}
.step.is-active .step__marker { border-color: var(--accent-fg); color: var(--accent-fg); box-shadow: 0 0 0 3px var(--accent-subtle); }
.step.is-done .step__marker { background: var(--success-bg); color: var(--success-fg); border-color: transparent; }
.step.is-error .step__marker { background: var(--danger-bg); color: var(--danger-fg); border-color: transparent; }
.step.is-done::before { border-color: var(--accent-border); }
.step__title { font-weight: 700; font-size: var(--text-body); }
.step__body { color: var(--text-secondary); font-size: var(--text-ui); line-height: var(--lh-ui); margin-top: .25rem; max-width: 42ch; }
.step__meta { margin-top: .5rem; }

/* Numaralı süreç: büyük mono sayı + metin */
.numbered { list-style: none; padding: 0; display: grid; gap: var(--space-6); }
.numbered > li { display: grid; grid-template-columns: auto 1fr; gap: var(--space-4); align-items: start; }
.numbered__n { font-family: var(--font-mono); font-size: var(--text-ui); font-weight: 500; color: var(--accent-fg); padding-top: .2rem; min-width: 2rem; border-top: 1.5px solid var(--accent-border); }
.numbered__t { font-weight: 700; font-size: var(--text-h4); line-height: var(--lh-h4); letter-spacing: var(--tracking-h4); }
.numbered__b { color: var(--text-secondary); margin-top: .25rem; max-width: var(--measure); }

/* --------------------------------------------------------------------------
   Boş durum
   -------------------------------------------------------------------------- */
.empty { padding: var(--space-10) var(--space-6); text-align: center; border: 1px dashed var(--border-control); border-radius: var(--radius-card); color: var(--text-secondary); }
.empty__title { font-weight: 700; color: var(--text-primary); margin-bottom: .25rem; }
.empty .btn { margin-top: var(--space-4); }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: var(--z-sticky);
  background: var(--surface-default);
  border-bottom: 1px solid var(--border-subtle);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  height: var(--header-h);
}
.logo { display: inline-flex; align-items: center; flex: none; }
.logo__img { height: 2.25rem; width: auto; }
@media (min-width: 1024px) { .logo__img { height: 2.5rem; } }
/* Temaya göre tek logo sürümü görünür (gerçek asset; light türev aynı geometri) */
.logo__img--dark { display: none; }
[data-theme='dark'] .logo__img--light { display: none; }
[data-theme='dark'] .logo__img--dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .logo__img--light { display: none; }
  :root:not([data-theme]) .logo__img--dark { display: block; }
}

.nav { display: none; }
@media (min-width: 1024px) {
  .nav { display: flex; align-items: center; gap: .25rem; }
}
.nav__item { position: relative; }
.nav__link, .nav__trigger {
  display: inline-flex; align-items: center; gap: .25rem;
  padding: .5rem .75rem;
  border-radius: var(--radius-control);
  font-size: var(--text-ui); line-height: var(--lh-ui); font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  transition: background-color var(--motion-fast) var(--ease-standard), color var(--motion-fast) var(--ease-standard);
}
.nav__link:hover, .nav__trigger:hover { background: var(--surface-hover); }
.nav__link[aria-current='page'], .nav__trigger[data-active='true'] { box-shadow: inset 0 -2px 0 var(--accent-fg); border-radius: var(--radius-control) var(--radius-control) 0 0; }
.nav__trigger .icon { width: var(--icon-sm); height: var(--icon-sm); transition: transform var(--motion-base) var(--ease-standard); color: var(--text-secondary); }
.nav__trigger[aria-expanded='true'] .icon { transform: rotate(180deg); }

.menu {
  position: absolute; top: calc(100% + .5rem); left: 0;
  min-width: 20rem;
  padding: .5rem;
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-overlay);
  z-index: var(--z-dropdown);
}
.menu[hidden] { display: none; }
.menu__item {
  display: grid; gap: .125rem;
  padding: .625rem .75rem;
  border-radius: var(--radius-control);
  text-decoration: none; color: var(--text-primary);
}
.menu__item:hover { background: var(--surface-hover); }
.menu__item[aria-current='page'] { background: var(--accent-subtle); }
.menu__item-title { display: flex; align-items: center; gap: .5rem; font-size: var(--text-ui); font-weight: 500; }
.menu__item-desc { font-size: var(--text-label); line-height: var(--lh-label); color: var(--text-secondary); }

.site-header__actions { display: flex; align-items: center; gap: .5rem; }
.site-header__actions .btn--secondary { display: none; }
@media (min-width: 1024px) {
  .site-header__actions .btn--secondary { display: inline-flex; }
}
.site-header__actions .btn--primary { display: none; }
@media (min-width: 640px) { .site-header__actions .btn--primary { display: inline-flex; } }
.menu-toggle { display: inline-flex; }
@media (min-width: 1024px) { .menu-toggle { display: none; } }

/* Tema düğmesi (ikon) */
.theme-btn .icon--sun { display: none; }
.theme-btn .icon--moon { display: block; }
[data-theme='dark'] .theme-btn .icon--sun { display: block; }
[data-theme='dark'] .theme-btn .icon--moon { display: none; }

/* Mobil menü */
.mobile-nav {
  position: fixed; inset: var(--header-h) 0 0 0;
  z-index: var(--z-overlay);
  background: var(--surface-default);
  overflow-y: auto;
  padding: var(--space-4) var(--gutter) var(--space-10);
  border-top: 1px solid var(--border-subtle);
}
.mobile-nav[hidden] { display: none; }
@media (min-width: 1024px) { .mobile-nav { display: none !important; } }
.mobile-nav__group { border-bottom: 1px solid var(--border-subtle); }
.mobile-nav__summary {
  list-style: none;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 0; font-weight: 500; cursor: pointer;
}
.mobile-nav__summary::-webkit-details-marker { display: none; }
.mobile-nav__summary .icon { transition: transform var(--motion-base) var(--ease-standard); color: var(--text-secondary); }
.mobile-nav__group[open] .mobile-nav__summary .icon { transform: rotate(180deg); }
.mobile-nav__list { list-style: none; padding: 0 0 .75rem; display: grid; gap: .125rem; }
.mobile-nav__list a { display: block; padding: .625rem .75rem; border-radius: var(--radius-control); text-decoration: none; color: var(--text-primary); }
.mobile-nav__list a:hover { background: var(--surface-hover); }
.mobile-nav__list a[aria-current='page'] { background: var(--accent-subtle); }
.mobile-nav__list .menu__item-desc { display: block; }
.mobile-nav__link { display: flex; align-items: center; justify-content: space-between; padding: 1rem 0; border-bottom: 1px solid var(--border-subtle); font-weight: 500; text-decoration: none; color: var(--text-primary); }
.mobile-nav__link[aria-current='page'] { color: var(--accent-fg); }
.mobile-nav__actions { display: grid; gap: .75rem; padding-top: var(--space-6); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--border-subtle); background: var(--surface-default); padding-block: var(--space-16) var(--space-8); }
.site-footer__top { display: grid; gap: var(--space-10); }
@media (min-width: 768px) { .site-footer__top { grid-template-columns: 1.4fr repeat(3, 1fr); gap: var(--space-8); } }
.site-footer__brand p { max-width: 30ch; color: var(--text-secondary); margin-top: var(--space-4); }
.site-footer__brand .logo__img { height: 2.25rem; }
.site-footer h2 { font-size: var(--text-label); line-height: var(--lh-label); font-weight: 500; letter-spacing: .02em; color: var(--text-secondary); margin-bottom: var(--space-4); font-family: var(--font-mono); }
.site-footer ul { list-style: none; padding: 0; display: grid; gap: .625rem; }
.site-footer li a { color: var(--text-primary); text-decoration: none; font-size: var(--text-ui); }
.site-footer li a:hover { color: var(--accent-fg); text-decoration: underline; }
.site-footer li .badge { margin-left: .375rem; vertical-align: middle; }
.site-footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
  display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: center; justify-content: space-between;
  font-size: var(--text-label); line-height: var(--lh-label); color: var(--text-muted);
}

/* Tema seçici (Sistem / Açık / Koyu) */
.theme-picker { display: inline-flex; align-items: center; gap: .625rem; }
.theme-picker__label { font-size: var(--text-label); color: var(--text-secondary); }

/* --------------------------------------------------------------------------
   Durum çubuğu / toast benzeri satır içi mesaj
   -------------------------------------------------------------------------- */
.status-line { display: inline-flex; align-items: center; gap: .5rem; font-size: var(--text-ui); color: var(--text-secondary); }
.status-line--busy::before {
  content: ''; width: .875rem; height: .875rem; border-radius: 50%;
  border: 2px solid var(--text-secondary); border-right-color: transparent; animation: spin .8s linear infinite;
}
@media (prefers-reduced-motion: reduce) { .status-line--busy::before { animation: none; border-right-color: var(--text-secondary); } }

/* --------------------------------------------------------------------------
   Ürün bileşenleri: RiskSummary, MatchCandidate, EvidencePanel
   -------------------------------------------------------------------------- */
.candidate {
  display: grid; gap: .25rem;
  width: 100%; text-align: left;
  padding: .75rem .875rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-control);
  background: var(--surface-default);
  transition: border-color var(--motion-fast) var(--ease-standard), background-color var(--motion-fast) var(--ease-standard);
}
.candidate:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.candidate[aria-pressed='true'] { background: var(--accent-subtle); border-color: var(--accent-border); }
.candidate__name { display: flex; justify-content: space-between; gap: .5rem; align-items: baseline; font-weight: 500; font-size: var(--text-ui); }
.candidate__name .t-mono { font-size: var(--text-caption); color: var(--text-muted); }
.candidate__meta { display: flex; flex-wrap: wrap; gap: .375rem .75rem; font-size: var(--text-label); color: var(--text-secondary); }
.candidate__fields { display: flex; flex-wrap: wrap; gap: .25rem; margin-top: .25rem; }
.candidate__fields .badge { font-size: var(--text-caption); padding: 0 .375rem; }

.risk-summary { display: grid; gap: var(--space-3); }
.risk-summary__row { display: grid; grid-template-columns: minmax(7rem, 9rem) 1fr; gap: .5rem .75rem; align-items: start; font-size: var(--text-ui); line-height: var(--lh-ui); }
.risk-summary__row dt { color: var(--text-secondary); }
.risk-summary__row dd { display: flex; flex-wrap: wrap; gap: .375rem .5rem; align-items: center; }
.risk-summary__row dd .t-caption { width: 100%; }

.evidence { display: grid; gap: .5rem; }
.evidence__item { display: grid; grid-template-columns: 1.25rem 1fr; gap: .5rem; padding: .625rem .75rem; border: 1px solid var(--border-subtle); border-radius: var(--radius-control); font-size: var(--text-ui); line-height: var(--lh-ui); }
.evidence__item .icon { color: var(--text-secondary); margin-top: .1rem; }
.evidence__src { font-weight: 500; }
.evidence__meta { color: var(--text-muted); font-size: var(--text-label); }

.confidence { display: inline-flex; align-items: center; gap: .5rem; }
.confidence__bar { width: 6rem; height: .375rem; border-radius: var(--radius-sm); background: var(--bg-subtle); border: 1px solid var(--border-subtle); overflow: hidden; }
.confidence__fill { height: 100%; background: var(--chart-2); }

/* Grafik düğümleri (RelationshipGraph) */
.graph-node { cursor: pointer; }
.graph-node circle { fill: var(--surface-default); stroke: var(--border-control); stroke-width: 1.5; transition: stroke var(--motion-fast) var(--ease-standard); }
.graph-node text { font-family: var(--font-mono); font-size: 11px; fill: var(--text-secondary); pointer-events: none; }
.graph-node:hover circle { stroke: var(--text-primary); }
.graph-node.is-selected circle { stroke: var(--accent-fg); stroke-width: 2; }
.graph-node.is-focus circle { fill: var(--accent-subtle); stroke: var(--accent-fg); stroke-width: 2; }
.graph-node.is-flagged circle { fill: var(--danger-bg); stroke: var(--danger-fg); }
.graph-node.is-warn circle { fill: var(--warning-bg); stroke: var(--warning-fg); }
.graph-edge { stroke: var(--border-strong); stroke-width: 1.5; fill: none; cursor: pointer; }
.graph-edge.is-active { stroke: var(--accent-fg); stroke-width: 2; }
.graph-edge.is-indirect { stroke-dasharray: 4 4; }
.graph-hit { stroke: transparent; stroke-width: 14; fill: none; cursor: pointer; }
.graph-node:focus-visible, .graph-edge-group:focus-visible { outline: none; }
.graph-node:focus-visible circle { stroke: var(--focus-ring); stroke-width: 3; }
.graph-edge-group:focus-visible .graph-edge { stroke: var(--focus-ring); stroke-width: 3; }

/* --------------------------------------------------------------------------
   Dil seçici (başlık) ve içerik sayfaları için ek stiller
   -------------------------------------------------------------------------- */
.lang-switch {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 2.5rem; height: 2.5rem; padding: 0 .5rem;
  border-radius: var(--radius-control);
  font-family: var(--font-mono); font-size: var(--text-label); font-weight: 500; letter-spacing: .04em;
  color: var(--text-primary); text-decoration: none;
  transition: background-color var(--motion-fast) var(--ease-standard);
}
.lang-switch:hover { background: var(--surface-hover); }
.status-card { max-width: 40rem; }
.status-card__state .badge { font-size: var(--text-ui); padding: .375rem .75rem; }
.prose--page { max-width: 46rem; }
.prose--page h3 { margin-top: var(--space-8); font-size: var(--text-h4); line-height: var(--lh-h4); }
.prose--page p + p { margin-top: var(--space-4); }
.prose--page ul { margin-top: var(--space-4); }
.section-head + .prose--page { margin-top: calc(var(--space-6) * -1); }
@media (min-width: 768px) { .site-footer__top { grid-template-columns: 1.3fr repeat(4, 1fr); } }

/* ---- Sistem durumu (canlı) ---- */
.status-live { max-width: 52rem; }
.status-live__head { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: var(--space-4); }
.status-live__overall .badge { font-size: var(--text-ui); padding: .5rem .875rem; }
.status-live__block { margin-top: var(--space-10); }
.status-live__block h2 { margin-bottom: var(--space-4); }
.status-list { list-style: none; margin: 0; padding: 0; border: 1px solid var(--border-subtle); border-radius: var(--radius-card); overflow: hidden; background: var(--surface-default); }
.status-list__row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-4) var(--space-5); }
.status-list__row + .status-list__row { border-top: 1px solid var(--border-subtle); }
.status-list__name { font-weight: 500; }
.status-regions { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); margin-top: var(--space-4); }
.status-region { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-3); }
.incident { padding: var(--space-5); border: 1px solid var(--border-subtle); border-radius: var(--radius-card); background: var(--surface-default); }
.incident + .incident { margin-top: var(--space-3); }
.incident__head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-2) var(--space-4); align-items: baseline; }
.incident__meta { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-3); }
.status-live__notify { margin-top: var(--space-10); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-4); }