/* ═══════════════════════════════════════════════
   Araçlar — paylaşılan tasarım sistemi
═══════════════════════════════════════════════ */
:root {
  --bg:        #FAFAF8;
  --bg-2:      #F2EEE6;
  --ink:       #0A0A0A;
  --ink-2:     #3A3A3A;
  --ink-3:     #7A7A7A;
  --ink-4:     #B8B8B8;
  --gold:      #C8A96E;
  --gold-light:#F0E8D8;
  --bordo:     #7A1F2B;
  --lacivert:  #1a2e4a;
  --line:      rgba(10,10,10,0.08);
  --line-2:    rgba(10,10,10,0.04);
  --f-display: 'Inter', sans-serif;
  --f-serif:   'Cormorant Garamond', serif;
  --f-mono:    'DM Mono', monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-display);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

[data-lang] { display: none; }
[data-lang].active { display: inline-block; }
.topbar-brand-title[data-lang] { display: none; }
.topbar-brand-title[data-lang].active { display: block; }

/* ───────── Üst nav (SSS sayfası ile birebir) ───────── */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg);
  padding: 22px 60px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  transition: box-shadow 0.3s, background 0.3s;
}
.topbar.scrolled {
  background: rgba(250,250,248,0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--line);
}
.topbar-back {
  font-family: var(--f-mono);
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-2);
  display: inline-flex; align-items: center; gap: 10px;
  transition: color 0.2s, gap 0.2s;
  justify-self: start;
}
.topbar-back:hover { color: var(--gold); gap: 14px; }
.topbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  color: var(--ink);
  transition: opacity 0.2s;
  justify-self: center;
}
.topbar-brand:hover { opacity: 0.7; color: var(--ink); }
.topbar-brand-logo {
  width: 68px; height: 68px;
  flex-shrink: 0;
}
.topbar-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.topbar-brand-name {
  font-family: var(--f-display);
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--ink);
  font-weight: 500;
}
.topbar-brand-title {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 4px;
}
.topbar-lang {
  display: flex; gap: 0;
  font-family: var(--f-mono);
  font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase;
  justify-self: end;
}
.topbar-lang button {
  background: none; border: none; cursor: pointer;
  padding: 4px 10px; color: var(--ink-3);
  font: inherit; transition: color 0.2s;
}
.topbar-lang button.active { color: var(--ink); }
.topbar-lang button:hover { color: var(--gold); }
.topbar-lang-sep { color: var(--ink-4); padding: 0 2px; }

/* ───────── Hero ───────── */
.page-hero {
  padding: 80px 60px 56px;
  border-bottom: 1px solid var(--line);
  max-width: 1280px;
  margin: 0 auto;
}
.page-hero-eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.page-hero-eyebrow::before {
  content: ''; width: 32px; height: 1px; background: var(--gold);
}
.page-hero-title {
  font-family: var(--f-serif);
  font-size: clamp(38px, 5.5vw, 68px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 22px;
}
.page-hero-title em { font-style: italic; color: var(--ink-3); }
.page-hero-sub {
  font-family: var(--f-display);
  font-size: clamp(15px, 1.3vw, 17px);
  color: var(--ink-2);
  max-width: 720px;
  line-height: 1.6;
}

/* ───────── Breadcrumb ───────── */
.breadcrumb {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 18px 60px;
  border-bottom: 1px solid var(--line-2);
  max-width: 1280px;
  margin: 0 auto;
}
.breadcrumb a { color: var(--ink-3); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb-sep { color: var(--ink-4); margin: 0 10px; }
.breadcrumb-current { color: var(--ink); }

/* ───────── İçerik ───────── */
main {
  max-width: 1280px;
  margin: 0 auto;
}
.page-section {
  padding: 60px;
}
.section-eyebrow {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 10px;
}
.section-eyebrow .gold { color: var(--gold); }
.section-eyebrow .bordo { color: var(--bordo); }
.section-heading {
  font-family: var(--f-serif);
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin-bottom: 14px;
}
.section-heading em { font-style: italic; color: var(--ink-3); }
.section-lead {
  font-family: var(--f-display);
  font-size: 15px;
  color: var(--ink-2);
  max-width: 640px;
  margin-bottom: 36px;
  line-height: 1.6;
}

/* ───────── Footer ───────── */
.page-footer {
  background: #141414;
  color: rgba(250,250,248,0.7);
  padding: 60px;
  margin-top: 80px;
}
.page-footer-inner {
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: start;
}
.page-footer-brand {
  font-family: var(--f-serif);
  font-size: 22px;
  color: rgba(250,250,248,0.95);
  margin-bottom: 12px;
}
.page-footer-brand em { font-style: italic; color: rgba(250,250,248,0.45); }
.page-footer-note {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: rgba(250,250,248,0.45);
  max-width: 580px;
}
.page-footer-note a { color: var(--gold); text-decoration: underline; text-underline-offset: 3px; }
.page-footer-links {
  display: flex; flex-direction: column; gap: 10px;
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase;
}
.page-footer-links a { color: rgba(250,250,248,0.7); transition: color 0.2s; }
.page-footer-links a:hover { color: var(--gold); }
.page-footer-bottom {
  max-width: 1280px; margin: 50px auto 0; padding-top: 28px;
  border-top: 1px solid rgba(250,250,248,0.08);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.10em;
  color: rgba(250,250,248,0.4);
  text-transform: uppercase;
}

/* ───────── Form / hesaplayıcı ortak ───────── */
.calc {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.calc-form {
  display: flex; flex-direction: column; gap: 22px;
}
.field {
  display: flex; flex-direction: column; gap: 8px;
}
.field-label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.field-hint {
  font-family: var(--f-display);
  font-size: 12px;
  color: var(--ink-3);
  margin-top: 2px;
  font-style: italic;
}
.field-input, .field-select {
  font-family: var(--f-display);
  font-size: 16px;
  color: var(--ink);
  background: var(--bg);
  border: none;
  border-bottom: 1.5px solid var(--ink);
  padding: 10px 0;
  width: 100%;
  outline: none;
  transition: border-color 0.2s;
}
.field-input:focus, .field-select:focus { border-color: var(--gold); }
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.calc-submit {
  margin-top: 12px;
  padding: 16px 28px;
  background: var(--ink);
  color: var(--bg);
  border: none;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
  align-self: flex-start;
}
.calc-submit:hover { background: var(--gold); color: var(--ink); }

.calc-result {
  background: var(--bg-2);
  padding: 36px;
  border-left: 3px solid var(--gold);
  min-height: 240px;
}
.calc-result-eyebrow {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 18px;
}
.calc-result-empty {
  font-family: var(--f-display);
  font-style: italic;
  color: var(--ink-3);
  font-size: 14px;
  line-height: 1.55;
}
.calc-result-amount {
  font-family: var(--f-serif);
  font-size: clamp(34px, 4.5vw, 52px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 8px 0 4px;
  line-height: 1.05;
}
.calc-result-amount-sub {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  color: var(--ink-3);
  margin-bottom: 24px;
}
.calc-result-detail {
  display: flex; flex-direction: column; gap: 10px;
  padding-top: 18px;
  border-top: 1px solid rgba(10,10,10,0.10);
  margin-top: 8px;
}
.calc-result-row {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--f-display);
  font-size: 14px;
}
.calc-result-row span:first-child { color: var(--ink-3); }
.calc-result-row span:last-child { color: var(--ink); font-variant-numeric: tabular-nums; }

.calc-info {
  margin-top: 56px;
  padding: 36px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.calc-info-block h4 {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
  font-weight: 400;
}
.calc-info-block p {
  font-family: var(--f-display);
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.7;
  margin-bottom: 12px;
}
.calc-info-block ul {
  list-style: none; padding: 0;
  font-family: var(--f-display);
  font-size: 14px;
  color: var(--ink-2);
}
.calc-info-block li {
  padding: 8px 0; padding-left: 18px; position: relative; line-height: 1.6;
  border-bottom: 1px dashed var(--line);
}
.calc-info-block li:last-child { border-bottom: none; }
.calc-info-block li::before {
  content: '·'; position: absolute; left: 0; color: var(--gold); font-size: 20px; line-height: 1;
}

.disclaimer {
  background: #FFF8EE;
  border-left: 3px solid var(--gold);
  padding: 22px 28px;
  margin-top: 40px;
  font-family: var(--f-display);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}
.disclaimer strong { color: var(--ink); font-weight: 600; }

/* ───────── Responsive ───────── */
@media (max-width: 980px) {
  .topbar { padding: 14px 20px; grid-template-columns: auto 1fr auto; gap: 12px; }
  .topbar-back { font-size: 10px; gap: 6px; }
  .topbar-back-text { display: none; }
  .topbar-brand-logo { width: 44px; height: 44px; }
  .topbar-brand-name { font-size: 16px; }
  .topbar-brand-title { font-size: 8px; letter-spacing: 0.18em; }
  .topbar-brand { gap: 10px; }
  .page-hero { padding: 56px 24px 40px; }
  .breadcrumb { padding: 16px 24px; }
  .page-section { padding: 40px 24px; }
  .calc { grid-template-columns: 1fr; gap: 32px; }
  .calc-info { grid-template-columns: 1fr; gap: 24px; }
  .page-footer { padding: 40px 24px; }
  .page-footer-inner { grid-template-columns: 1fr; gap: 32px; }
}