/* Sistem fontları kullanılır; sayfa dışarıya font isteği göndermez. */

:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #171a20;
  --ink-2: #565e6b;
  --ink-3: #5f6876;
  --line: #e1e5ea;
  --accent: #1d4ed8;
  --accent-hover: #173fae;
  --accent-soft: #eef3ff;
  --accent-line: #c8d5ff;
  --warn-bg: #fff8e8;
  --warn-line: #ead8a9;
  --warn-ink: #644c12;
  --error: #b42318;
  --radius: 14px;
}

* { box-sizing: border-box; }

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

body {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 10;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  background: #fff;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- yerleşim ---------- */

.site-header {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.site-header__inner {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  min-height: 44px;
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--ink);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -.015em;
  text-decoration: none;
}

.brand::before {
  content: "";
  width: 3px;
  height: 20px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--accent);
}

.brand:hover { color: var(--accent-hover); }

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 14px;
}

.site-header nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.wrap {
  width: 100%;
  flex: 1 0 auto;
  max-width: 1120px;
  margin: 0 auto;
  padding: 34px 18px 56px;
}

.calculator-page { max-width: 760px; }

.cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

h1 {
  margin: 0 0 9px;
  font-size: clamp(25px, 4vw, 34px);
  line-height: 1.2;
  letter-spacing: -.025em;
}

.lede {
  max-width: 55ch;
  margin: 0 0 22px;
  color: var(--ink-2);
  font-size: 15px;
  font-style: italic;
  line-height: 1.55;
}

/* ---------- form ---------- */

.form {
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(23, 26, 32, .04);
}

.field { margin-bottom: 18px; }

label {
  display: block;
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 650;
}

input,
select,
button {
  min-height: 44px;
  font: inherit;
}

input,
select {
  width: 100%;
  padding: 10px 12px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #c9d0da;
  border-radius: 9px;
  font-size: 16px;
}

input[aria-invalid="true"],
select[aria-invalid="true"] { border-color: var(--error); }

select:disabled {
  color: var(--ink-3);
  background: #f0f2f5;
}

.row {
  display: flex;
  gap: 9px;
}

.row > * {
  flex: 1 1 0;
  min-width: 0;
}

.money { position: relative; }

.money-prefix {
  position: absolute;
  top: 50%;
  left: 12px;
  color: var(--ink-3);
  font-size: 16px;
  pointer-events: none;
  transform: translateY(-50%);
}

.money input { padding-left: 30px; }

.hint {
  margin: 6px 0 0;
  color: var(--ink-3);
  font-size: 12.5px;
}

.error {
  margin: 6px 0 0;
  color: var(--error);
  font-size: 13px;
  font-weight: 550;
}

.error::before { content: "⚠ "; }

.btn {
  width: 100%;
  min-height: 48px;
  padding: 10px 16px;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 9px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
}

.btn:hover { background: var(--accent-hover); }

/* ---------- sonuç ---------- */

.result {
  min-width: 0;
  scroll-margin-top: 16px;
}

.result:focus {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.result-intro,
.eyebrow {
  margin: 0 0 12px;
  color: var(--ink-2);
  font-size: 14px;
}

.result-grid,
.results-grid,
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.result-card {
  min-width: 0;
  min-height: 148px;
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(23, 26, 32, .04);
}

.result-card--primary {
  background: linear-gradient(180deg, var(--accent-soft), #fff 60%);
  border-color: var(--accent-line);
}

.result-card__label {
  min-height: 42px;
  margin: 0 0 12px;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.35;
}

.result-card__amount,
.hero {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: clamp(25px, 3.2vw, 34px);
  font-weight: 780;
  letter-spacing: -.035em;
  line-height: 1.1;
}

.result-card__meta,
.hero-sub {
  margin: 10px 0 0;
  color: var(--ink-3);
  font-size: 12.5px;
}

.result-card__status {
  margin: 8px 0 0;
  color: var(--ink-3);
  font-size: 11.5px;
  line-height: 1.45;
}

.result-failure,
.hero--empty {
  color: var(--ink-2);
  font-size: 20px;
  letter-spacing: -.015em;
}

.result-period {
  margin: 14px 0 0;
  color: var(--ink-2);
  font-size: 13px;
  text-align: right;
}

.demo {
  margin: 0 0 18px;
  padding: 10px 13px;
  color: var(--warn-ink);
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: 9px;
  font-size: 13px;
}

.legal-note {
  max-width: 82ch;
  margin: 22px auto 0;
  color: var(--ink-3);
  font-size: 12px;
  line-height: 1.35;
  text-align: center;
}

.legal-note a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  margin: -14px 0 -14px 4px;
  white-space: nowrap;
}

/* ---------- içerik sayfaları ---------- */

.prose { max-width: 72ch; }
.prose h1 { margin-bottom: 16px; }

.page-updated {
  margin: -8px 0 20px;
  color: var(--ink-3) !important;
  font-size: 13px !important;
}

.summary-card,
.callout,
.page-toc,
.fact-grid > div {
  border: 1px solid var(--line);
  border-radius: 10px;
}

.summary-card {
  margin: 0 0 22px;
  padding: 17px 18px;
  background: var(--card);
}

.summary-card h2 {
  margin: 0 0 8px;
  font-size: 17px;
}

.summary-card p { margin: 0 0 8px; }

.summary-list {
  margin: 8px 0 0;
  padding-left: 21px;
}

.page-toc {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 12px;
  margin: 0 0 28px;
  padding: 8px 12px;
  background: var(--accent-soft);
  border-color: var(--accent-line);
}

.page-toc strong {
  margin-right: 4px;
  font-size: 13px;
}

.page-toc a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  font-size: 13px;
}

.prose h2 {
  margin: 34px 0 10px;
  font-size: 19px;
  letter-spacing: -.01em;
}

.prose h3 {
  margin: 24px 0 8px;
  font-size: 16px;
}

.prose p,
.prose li {
  color: var(--ink-2);
  font-size: 15px;
}

.prose code {
  padding: 2px 6px;
  color: var(--ink);
  background: #eceff3;
  border-radius: 4px;
  font-size: 13px;
}

.prose pre {
  max-width: 100%;
  padding: 14px;
  overflow-x: auto;
  color: var(--ink);
  background: #f0f2f5;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 13px;
  white-space: pre-wrap;
}

.prose table {
  display: block;
  width: 100%;
  margin: 12px 0;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 14px;
}

.prose th,
.prose td {
  padding: 8px 10px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: #f0f2f5;
  font-size: 13px;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 18px;
}

.fact-grid > div {
  padding: 11px 12px;
  background: var(--card);
}

.fact-grid dt {
  color: var(--ink-3);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.fact-grid dd {
  margin: 2px 0 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 650;
}

.callout {
  padding: 12px 14px;
  background: var(--accent-soft);
  border-color: var(--accent-line);
}

.callout--warning {
  color: var(--warn-ink) !important;
  background: var(--warn-bg);
  border-color: var(--warn-line);
}

.prose > p > a,
.prose td a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.muted {
  color: var(--ink-3) !important;
  font-size: 13px !important;
}

.legal-draft {
  padding: 12px 14px;
  border-left: 3px solid var(--warn-line);
  background: var(--warn-bg);
}

.legal-draft strong {
  display: block;
  margin-bottom: 4px;
  color: var(--warn-ink);
}

.single-info-panel {
  display: none;
  max-width: 72ch;
  margin: 36px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.single-info-panel:target,
.single-info-panel.is-active {
  display: block;
}

.site-footer {
  flex: 0 0 auto;
  margin-top: auto;
  padding: 18px;
  color: var(--ink-3);
  background: #fff;
  border-top: 1px solid var(--line);
  font-size: 13px;
  text-align: center;
}

.site-footer p { margin: 0; }

.site-footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 3px;
}

/* ---------- responsive, hareket ve yazdırma ---------- */

@media (max-width: 720px) {
  .result-grid,
  .results-grid,
  .comparison-grid { grid-template-columns: 1fr; }

  .fact-grid { grid-template-columns: 1fr; }

  .result-card { min-height: 0; }
  .result-card__label { min-height: 0; }
  .result-period { text-align: left; }
}

@media (max-width: 420px) {
  .site-header__inner { align-items: flex-start; }
  .wrap { padding-top: 26px; }
  .form { padding: 18px; }
  .row { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  body { background: #fff; }
  .site-header nav, .form, .skip, .site-footer { display: none !important; }
  .cols { display: block; }
  .result-grid, .results-grid, .comparison-grid { grid-template-columns: repeat(2, 1fr); }
  .result-card { break-inside: avoid; box-shadow: none; }
  .legal-note { margin-top: 18px; }
  a[href]::after { content: ""; }
}

@media (forced-colors: active) {
  .form,
  .result-card,
  .summary-card,
  .callout,
  .page-toc,
  .fact-grid > div,
  input,
  select,
  button {
    border: 1px solid CanvasText;
  }

  .result-card--primary {
    background: Canvas;
  }

  :focus-visible,
  .result:focus {
    outline: 3px solid Highlight;
  }

  .error::before {
    content: "Hata: ";
  }
}