/* ==========================================================
   Döviz & Altın — Premium cam (glass) tema
   Koyu zemin · altın vurgu · şeffaf paneller
   ========================================================== */

:root {
  /* zemin */
  --bg: #060a12;
  --bg-2: #0a1020;

  /* cam yüzeyler */
  --glass: rgba(255, 255, 255, .045);
  --glass-strong: rgba(255, 255, 255, .075);
  --glass-hover: rgba(255, 255, 255, .095);
  --glass-border: rgba(255, 255, 255, .11);
  --glass-border-strong: rgba(255, 255, 255, .2);
  --blur: saturate(160%) blur(18px);

  /* altın */
  --gold: #f0c566;
  --gold-hi: #ffe3a1;
  --gold-lo: #b8862b;
  --gold-grad: linear-gradient(135deg, #ffe9b0 0%, #f0c566 45%, #c4912f 100%);
  --gold-glow: rgba(240, 197, 102, .22);

  /* metin */
  --text: #f5f7fb;
  --text-2: #cdd5e3;
  --muted: #8f9db3;

  /* durum */
  --green: #3ddc97;
  --red: #ff6b7a;
  --green-bg: rgba(61, 220, 151, .12);
  --red-bg: rgba(255, 107, 122, .12);

  /* eski isimler (geriye uyumluluk) */
  --panel: var(--glass);
  --panel2: var(--glass-strong);
  --border: var(--glass-border);

  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 10px 40px rgba(0, 0, 0, .35);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; color-scheme: dark; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-color: var(--bg);
  background-image:
    radial-gradient(900px 520px at 8% -6%, rgba(240, 197, 102, .16), transparent 62%),
    radial-gradient(800px 560px at 100% 12%, rgba(64, 110, 255, .13), transparent 60%),
    radial-gradient(900px 600px at 50% 112%, rgba(240, 197, 102, .09), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  background-attachment: fixed;
}

a { color: inherit; text-decoration: none; }
::selection { background: rgba(240, 197, 102, .35); color: #fff; }

/* ---------- Üst menü ---------- */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 13, 24, .55);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--glass-border);
}
.nav {
  max-width: 1200px;
  margin: auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .5px;
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  white-space: nowrap;
}
.logo span { color: var(--text); -webkit-text-fill-color: var(--text); font-weight: 600; }
.nav nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav nav a {
  color: var(--text-2);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 999px;
  transition: background .2s, color .2s;
}
.nav nav a:hover { color: var(--gold-hi); background: var(--glass-strong); }

/* ---------- Sayfa iskeleti ---------- */
.container { max-width: 1200px; margin: auto; padding: 30px 20px 60px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 54px 40px;
  margin-top: 28px;
  border-radius: 26px;
  border: 1px solid var(--glass-border);
  background:
    radial-gradient(520px 260px at 92% 0%, rgba(240, 197, 102, .20), transparent 65%),
    linear-gradient(135deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .02));
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, .12);
}
.hero::after {            /* ince altın çizgi */
  content: "";
  position: absolute;
  left: 40px; right: 40px; top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: .7;
}
.hero small {
  display: inline-block;
  color: var(--gold);
  letter-spacing: 3px;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 12px;
  border: 1px solid rgba(240, 197, 102, .35);
  border-radius: 999px;
  background: rgba(240, 197, 102, .08);
}
.hero h1 {
  font-size: clamp(30px, 4.6vw, 48px);
  line-height: 1.12;
  letter-spacing: -.5px;
  margin: 18px 0 14px;
  background: linear-gradient(180deg, #fff 30%, #d8e0ee 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p { color: var(--text-2); max-width: 650px; font-size: 16px; margin: 0 0 6px; }
.hero .subtitle { margin-top: 4px; }

.status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--green);
  font-size: 13px;
  font-weight: 600;
  margin-top: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--green-bg);
  border: 1px solid rgba(61, 220, 151, .25);
}
.dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(61, 220, 151, .6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 9px rgba(61, 220, 151, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 220, 151, 0); }
}

/* ---------- Başlıklar ---------- */
.section-title {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 15px;
  margin-bottom: 20px;
}
h2 {
  font-size: 24px;
  margin: 0;
  letter-spacing: -.2px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title h2::before {
  content: "";
  width: 4px; height: 22px;
  border-radius: 4px;
  background: var(--gold-grad);
  box-shadow: 0 0 14px var(--gold-glow);
}
.subtitle { color: var(--muted); font-size: 13px; }
.section-title > span.subtitle {
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  background: var(--glass);
  white-space: nowrap;
}

/* ---------- Fiyat kartları ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 22px;
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
  transition: transform .25s, border-color .25s, box-shadow .25s, background .25s;
}
.card::before {           /* üstte altın ışık */
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity .25s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(240, 197, 102, .45);
  background: linear-gradient(160deg, var(--glass-hover), var(--glass));
  box-shadow: 0 16px 44px rgba(0, 0, 0, .4), 0 0 32px var(--gold-glow);
}
.card:hover::before { opacity: 1; }

.card-top { display: flex; justify-content: space-between; align-items: center; }
.card-top .subtitle {
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  font-variant-numeric: tabular-nums;
}
.symbol {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: var(--gold-grad);
  color: #1a1204;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 6px 18px var(--gold-glow), inset 0 1px 0 rgba(255, 255, 255, .5);
}
.card h3 { font-size: 15px; font-weight: 600; color: var(--text-2); margin: 14px 0 2px; }
.price {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -.5px;
  margin: 6px 0 14px;
  font-variant-numeric: tabular-nums;
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  overflow-wrap: anywhere;
}
.details {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.card .details:has(span) span {
  flex: 1;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(0, 0, 0, .22);
  border: 1px solid rgba(255, 255, 255, .06);
}
.change {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  margin-top: 14px;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--glass);
  font-variant-numeric: tabular-nums;
}
.up { color: var(--green); }
.down { color: var(--red); }
.change.up { background: var(--green-bg); }
.change.down { background: var(--red-bg); }
.change.up::before { content: "▲ "; font-size: 9px; }
.change.down::before { content: "▼ "; font-size: 9px; }

/* ---------- Panel & hesaplayıcı ---------- */
.panel {
  background: linear-gradient(160deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--glass-border);
  border-radius: 22px;
  padding: 26px;
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, .08);
}
.calculator { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.field { margin-bottom: 18px; }
.field:last-child { margin-bottom: 0; }
label {
  display: block;
  color: var(--text-2);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}
input, select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--glass-border);
  background: rgba(0, 0, 0, .28);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 16px;
  outline: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
input:hover, select:hover { border-color: var(--glass-border-strong); }
input:focus, select:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(240, 197, 102, .15);
  background: rgba(0, 0, 0, .38);
}
select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 42px;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23f0c566' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}
select option { background: #0e1626; color: var(--text); }

.toggle {
  display: flex;
  gap: 4px;
  padding: 4px;
  border-radius: 14px;
  background: rgba(0, 0, 0, .28);
  border: 1px solid var(--glass-border);
}
.toggle button {
  flex: 1;
  padding: 11px 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text-2);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, color .2s, box-shadow .2s;
}
.toggle button:hover { background: var(--glass-strong); color: #fff; }
.toggle button.active {
  background: var(--gold-grad);
  color: #1a1204;
  font-weight: 800;
  box-shadow: 0 4px 16px var(--gold-glow);
}

.result {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 200px;
  padding: 26px;
  border-radius: 18px;
  border: 1px solid rgba(240, 197, 102, .3);
  background:
    radial-gradient(360px 200px at 100% 0%, rgba(240, 197, 102, .22), transparent 65%),
    linear-gradient(145deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .02));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1);
}
.result small { color: var(--text-2); font-size: 13px; font-weight: 600; }
.result strong {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -.5px;
  margin: 10px 0;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.result p { color: var(--muted); font-size: 12px; margin: 0; }

/* ---------- Tablo ---------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  background: linear-gradient(160deg, var(--glass-strong), var(--glass));
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, .08);
}
table { width: 100%; border-collapse: collapse; min-width: 560px; }
th, td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}
th {
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  background: rgba(0, 0, 0, .2);
}
td { font-weight: 600; color: var(--text); }
tbody tr { transition: background .15s; }
tbody tr:hover { background: var(--glass-strong); }
tbody tr:last-child td { border-bottom: 0; }
td.gold { color: var(--gold); font-weight: 800; }

/* ---------- SSS & metin ---------- */
.faq {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 10px;
  transition: border-color .2s, background .2s;
}
.faq:hover { border-color: rgba(240, 197, 102, .35); background: var(--glass-strong); }
.faq h3 { font-size: 16px; margin: 0 0 8px; color: var(--gold-hi); }
.faq p { color: var(--text-2); font-size: 14px; margin: 0; }

.breadcrumb { display: block; font-size: 13px; color: var(--muted); margin: 22px 0 0; }
.breadcrumb a { color: var(--gold); font-size: inherit; }
.breadcrumb a:hover { color: var(--gold-hi); }
.breadcrumb span { margin: 0 8px; opacity: .6; }

.prose { max-width: 820px; }
.prose h2 { margin: 0 0 12px; }
.prose p { color: var(--text-2); font-size: 15px; margin: 0 0 14px; }
.prose ul { color: var(--text-2); font-size: 15px; padding-left: 20px; margin: 0 0 14px; }
.prose li { margin-bottom: 5px; }
.prose li::marker { color: var(--gold); }

.grid.one { grid-template-columns: minmax(0, 420px); }
.grid.two { grid-template-columns: repeat(2, 1fr); }

/* ---------- Bağlantı kartları ---------- */
.link-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.link-grid a {
  position: relative;
  display: block;
  padding: 18px 44px 18px 20px;
  border-radius: 14px;
  background: linear-gradient(160deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.link-grid a::after {
  content: "→";
  position: absolute;
  right: 18px; top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
  font-size: 18px;
  transition: transform .25s;
}
.link-grid a:hover {
  transform: translateY(-3px);
  border-color: rgba(240, 197, 102, .45);
  box-shadow: 0 12px 32px rgba(0, 0, 0, .35), 0 0 24px var(--gold-glow);
}
.link-grid a:hover::after { transform: translate(4px, -50%); }
.link-grid strong { display: block; color: var(--gold-hi); font-size: 15px; margin-bottom: 4px; }
.link-grid span { color: var(--muted); font-size: 13px; }

/* ---------- Alt bilgi ---------- */
footer {
  border-top: 1px solid var(--glass-border);
  padding: 34px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  background: rgba(4, 7, 14, .5);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
}
footer p { margin: 6px 0; }
footer a { color: var(--gold); }
footer a:hover { color: var(--gold-hi); }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: center; margin: 0 0 18px; }
.footer-links a { color: var(--text-2); }
.footer-links a:hover { color: var(--gold-hi); }
.error { color: var(--red); font-size: 12px; }

/* ---------- Erişilebilirlik ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, .15); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(240, 197, 102, .45); }

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

/* blur desteklenmeyen tarayıcılar için daha opak zemin */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  header { background: rgba(8, 13, 24, .95); }
  .card, .panel, .table-wrap, .hero, .link-grid a, footer { background-color: rgba(18, 26, 44, .92); }
}

/* ---------- Mobil ---------- */
@media (max-width: 900px) {
  .link-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 750px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .calculator { grid-template-columns: 1fr; }
  .hero { padding: 34px 22px; border-radius: 20px; }
  .hero::after { left: 22px; right: 22px; }
  .nav { flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px 16px; }
  .nav nav {
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 6px;
    padding-bottom: 2px;
    scrollbar-width: none;
  }
  .nav nav::-webkit-scrollbar { display: none; }
  .nav nav a { white-space: nowrap; background: var(--glass); border: 1px solid var(--glass-border); }
  .panel { padding: 20px; }
  h2 { font-size: 21px; }
}
@media (max-width: 480px) {
  .grid, .grid.one, .grid.two, .link-grid { grid-template-columns: 1fr; }
  .container { padding: 22px 14px 48px; }
  .price { font-size: 26px; }
  .section-title { flex-direction: column; align-items: flex-start; gap: 8px; }
  th, td { padding: 13px 14px; }
}