:root {
  --zemin: #0F172A;
  --yuzey: #1E293B;
  --yuzey-koyu: #16203A;
  --kenar: #334155;
  --metin: #F8FAFC;
  --metin-soluk: #94A3B8;
  --vurgu: #F59E0B;
  --yukari: #10B981;
  --asagi: #EF4444;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--zemin);
  color: var(--metin);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ── Üst bar ───────────────────────────────────────────── */
.ust-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  /* içerik sütunuyla (max 1100px) hizalı dursun */
  padding: 14px max(16px, calc((100% - 1100px) / 2));
  border-bottom: 1px solid var(--kenar);
  background: rgba(15, 23, 42, 0.9);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  z-index: 10;
}

.marka { display: flex; align-items: center; gap: 10px; }
.marka-ad { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }

.durum {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--metin-soluk);
}

.canli-nokta {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--metin-soluk);
}
.canli-nokta.canli { background: var(--yukari); animation: nabiz 2s ease-in-out infinite; }
.canli-nokta.eski { background: var(--vurgu); }
.canli-nokta.hata { background: var(--asagi); }

@keyframes nabiz {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
  50% { box-shadow: 0 0 0 5px rgba(16, 185, 129, 0); }
}

/* ── Ana içerik ────────────────────────────────────────── */
main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

.bolum-baslik {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--metin-soluk);
  margin: 32px 0 12px;
}

/* ── Ana (hero) kart ───────────────────────────────────── */
.hero-kart {
  background: linear-gradient(145deg, var(--yuzey) 0%, var(--yuzey-koyu) 100%);
  border: 1px solid var(--kenar);
  border-radius: var(--radius);
  padding: 28px;
}

.hero-ust { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.hero-ad { font-size: 1.125rem; font-weight: 600; color: var(--metin-soluk); margin: 0; }
.hero-tarih { font-size: 0.8125rem; color: var(--metin-soluk); font-variant-numeric: tabular-nums; }

.kur-fiyatlar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin: 16px 0 12px;
}

.kur-kutu {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--kenar);
  border-radius: 10px;
  padding: 16px 20px;
}

.kur-deger {
  font-size: clamp(1.875rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}

.hero-rozetler { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 0 0 18px; }

.kur-not {
  font-size: 0.8125rem;
  color: var(--metin-soluk);
  margin: 16px 0 0;
  line-height: 1.6;
}

.rozet {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.rozet.yukari { background: rgba(16, 185, 129, 0.14); color: var(--yukari); }
.rozet.asagi { background: rgba(239, 68, 68, 0.14); color: var(--asagi); }

.hero-detay {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
}

.detay-kutu {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--kenar);
  border-radius: 10px;
  padding: 12px 14px;
}
.detay-etiket { font-size: 0.75rem; color: var(--metin-soluk); margin-bottom: 4px; }
.detay-deger { font-size: 1.125rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.detay-yuzde { font-size: 0.75rem; font-weight: 600; margin-left: 8px; }

/* Gün içi aralık çubuğu */
.aralik { margin-top: 20px; }
.aralik-bar {
  position: relative;
  height: 6px;
  border-radius: 3px;
  background: var(--kenar);
  margin: 8px 0 6px;
}
.aralik-dolgu {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--vurgu), #FBBF24);
  transition: width 400ms ease-out;
}
.aralik-uclar {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--metin-soluk);
  font-variant-numeric: tabular-nums;
}

.rozet.notr { background: rgba(245, 158, 11, 0.14); color: var(--vurgu); }

/* ── Grafik kartı ──────────────────────────────────────── */
.grafik-kart {
  background: var(--yuzey);
  border: 1px solid var(--kenar);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-top: 16px;
}

.grafik-bas {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.grafik-sec {
  background: var(--zemin);
  color: var(--metin);
  border: 1px solid var(--kenar);
  border-radius: 8px;
  padding: 9px 12px;
  font: inherit;
  font-size: 0.875rem;
  cursor: pointer;
}
.grafik-sec:focus-visible { outline: 2px solid var(--vurgu); outline-offset: 1px; }

.periyot-grup { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }

.periyot-bolum { display: flex; flex-direction: column; gap: 4px; }

.periyot-baslik {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--metin-soluk);
  padding-left: 2px;
}

.periyot-dugmeler {
  display: flex;
  gap: 0;
  border: 1px solid var(--kenar);
  border-radius: 8px;
  overflow: hidden;
}

.periyot-dugme {
  background: transparent;
  color: var(--metin-soluk);
  border: none;
  border-right: 1px solid var(--kenar);
  padding: 8px 12px;
  min-width: 36px;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  transition: background 200ms ease, color 200ms ease;
}
.periyot-dugme:last-child { border-right: none; }
.periyot-dugme:hover { color: var(--metin); }
.periyot-dugme.aktif {
  background: rgba(245, 158, 11, 0.14);
  color: var(--vurgu);
  border-color: rgba(245, 158, 11, 0.4);
}
.periyot-dugme:focus-visible { outline: 2px solid var(--vurgu); outline-offset: 1px; }

.grafik-alan { height: 380px; }

.yon { font-weight: 600; }
.yon.yukari { color: var(--yukari); }
.yon.asagi { color: var(--asagi); }

/* Fiyat değişince kısa renk vurgusu */
.flas-yukari { animation: flasYesil 700ms ease-out; }
.flas-asagi { animation: flasKirmizi 700ms ease-out; }
@keyframes flasYesil { 0% { color: var(--yukari); } 100% { color: inherit; } }
@keyframes flasKirmizi { 0% { color: var(--asagi); } 100% { color: inherit; } }

/* ── İskelet (yükleniyor) ─────────────────────────────── */
.iskelet {
  border-radius: var(--radius);
  background: linear-gradient(90deg, var(--yuzey) 25%, #273349 50%, var(--yuzey) 75%);
  background-size: 200% 100%;
  animation: parilti 1.4s ease-in-out infinite;
}
.hero-iskelet { height: 180px; }
@keyframes parilti { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ── Hata bandı ───────────────────────────────────────── */
.hata-bandi {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #FCA5A5;
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 0.9375rem;
}

/* ── Alt bilgi ────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--kenar);
  padding: 16px max(16px, calc((100% - 1100px) / 2));
  text-align: center;
  font-size: 0.8125rem;
  color: var(--metin-soluk);
}
footer p { margin: 4px 0; }

/* ── Portföy sayfası ──────────────────────────────────────── */
.nav-baglanti {
  color: var(--metin-soluk);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  margin-left: 14px;
  padding: 6px 10px;
  border-radius: 8px;
  transition: color 200ms ease, background 200ms ease;
}

.kadi {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-baglanti:hover { color: var(--metin); background: rgba(51, 65, 85, 0.4); }

.giris-kart {
  max-width: 420px;
  margin: 48px auto 0;
  background: var(--yuzey);
  border: 1px solid var(--kenar);
  border-radius: var(--radius);
  padding: 28px;
}

.banka-ad-buyuk { font-size: 1.125rem; font-weight: 600; margin: 0 0 6px; }

.giris-form { display: flex; flex-direction: column; gap: 14px; margin-top: 18px; }
#kayit-ek { display: flex; flex-direction: column; gap: 14px; }
#kayit-ek[hidden] { display: none; }

.form-alan { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.form-alan span { font-size: 0.8125rem; color: var(--metin-soluk); }
.form-alan input, .form-alan select {
  background: var(--zemin);
  color: var(--metin);
  border: 1px solid var(--kenar);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  font-size: 0.9375rem;
  min-height: 44px;
  width: 100%;
  min-width: 0; /* datetime/number inputların öz genişliği sütunu taşırmasın */
}
.form-alan input:focus-visible, .form-alan select:focus-visible {
  outline: 2px solid var(--vurgu);
  outline-offset: 1px;
}

.form-dugmeler { display: flex; gap: 10px; }

.dugme {
  background: transparent;
  color: var(--metin);
  border: 1px solid var(--kenar);
  border-radius: 8px;
  padding: 10px 18px;
  min-height: 44px;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 200ms ease, border-color 200ms ease;
}
.dugme:hover { border-color: #475569; background: rgba(51, 65, 85, 0.3); }
.dugme.birincil { background: var(--vurgu); color: #0F172A; border-color: var(--vurgu); }
.dugme.birincil:hover { background: #FBBF24; }
.dugme:focus-visible { outline: 2px solid var(--vurgu); outline-offset: 2px; }
.dugme-kucuk { padding: 6px 12px; min-height: 0; font-size: 0.8125rem; margin-left: 10px; }

.form-hata { color: #FCA5A5; font-size: 0.875rem; min-height: 1.2em; margin: 4px 0 0; }
.form-hata.basari { color: var(--yukari); }

.sag-grup { display: flex; align-items: center; gap: 10px; min-width: 0; }

/* ── Kullanıcı menüsü ─────────────────────────────────────── */
.kmenu { position: relative; }

.kmenu-dugme {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--metin);
  border: 1px solid var(--kenar);
  border-radius: 999px;
  padding: 7px 14px;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 200ms ease, background 200ms ease;
}
.kmenu-dugme:hover { border-color: #475569; background: rgba(51, 65, 85, 0.3); }
.kmenu-dugme:focus-visible { outline: 2px solid var(--vurgu); outline-offset: 2px; }

.kmenu-liste {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 200px;
  background: var(--yuzey);
  border: 1px solid var(--kenar);
  border-radius: 12px;
  padding: 6px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  z-index: 30;
}

.kmenu-og {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  color: var(--metin);
  border: none;
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  font-size: 0.875rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 150ms ease;
}
.kmenu-og:hover { background: rgba(51, 65, 85, 0.4); }
.kmenu-og.tehlike { color: #FCA5A5; }

/* ── Yönetim paneli ───────────────────────────────────────── */
.ayar-listesi { display: flex; flex-direction: column; margin-top: 8px; }

.ayar-satir {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
}
.ayar-satir:last-child { border-bottom: none; }

.ayar-ad { font-weight: 600; font-size: 0.9375rem; }
.ayar-aciklama { font-size: 0.8125rem; color: var(--metin-soluk); margin-top: 2px; }

.anahtar { position: relative; flex-shrink: 0; cursor: pointer; }
.anahtar input { position: absolute; opacity: 0; width: 100%; height: 100%; cursor: pointer; }

.anahtar-top {
  display: block;
  width: 46px;
  height: 26px;
  border-radius: 999px;
  background: var(--kenar);
  transition: background 200ms ease;
}
.anahtar-top::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--metin);
  transition: transform 200ms ease;
}
.anahtar input:checked + .anahtar-top { background: var(--yukari); }
.anahtar input:checked + .anahtar-top::after { transform: translateX(20px); }
.anahtar input:focus-visible + .anahtar-top { outline: 2px solid var(--vurgu); outline-offset: 2px; }

.uye-butonlar { white-space: nowrap; }
.uye-butonlar .dugme-kucuk { margin-left: 4px; }
.dugme-kucuk.sil { color: #FCA5A5; }

/* ── Modal ────────────────────────────────────────────────── */
.modal-arka {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.7);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}
.modal-arka[hidden] { display: none; } /* display:flex, hidden özniteliğini ezmesin */

/* ── Güncellemeler ────────────────────────────────────────── */
.alt-baglanti { color: var(--metin-soluk); }
.alt-baglanti:hover { color: var(--metin); }

.modal-genis { max-width: 520px; max-height: 85dvh; overflow-y: auto; }

.gnc-modal-bas { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.gnc-modal-bas .dugme-kucuk { margin-left: 0; }
.gnc-tum { display: inline-block; margin: 6px 0 0; padding-left: 0; }

.gnc-sayfa-baslik { font-size: 1.375rem; margin-bottom: 4px; }
.gnc-sayfa { margin-top: 18px; display: flex; flex-direction: column; gap: 12px; }

.gnc-kayit {
  background: var(--yuzey);
  border: 1px solid var(--kenar);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.gnc-modal-icerik .gnc-kayit { padding: 14px 0; background: none; border: none; border-bottom: 1px solid var(--kenar); border-radius: 0; }

.gnc-bas { display: flex; align-items: center; gap: 10px; }
.gnc-tarih { font-size: 0.8125rem; color: var(--metin-soluk); }
.gnc-baslik { font-size: 1rem; font-weight: 600; margin: 10px 0 6px; }
.gnc-liste { margin: 0; padding-left: 20px; color: var(--metin-soluk); font-size: 0.9075rem; line-height: 1.7; }
.gnc-liste li::marker { color: var(--vurgu); }

.modal {
  width: 100%;
  max-width: 400px;
  background: var(--yuzey);
  border: 1px solid var(--kenar);
  border-radius: var(--radius);
  padding: 24px;
}

.ozet-izgara {
  display: grid;
  grid-template-columns: repeat(4, 1fr); /* 8 kart = dengeli 2 sıra */
  gap: 12px;
}
.ozet-kutu { background: var(--yuzey); }
.ozet-kutu .detay-deger { font-size: 1.375rem; }

.grafik-alan-kisa { height: 260px; }

.islem-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
  gap: 12px;
  align-items: end; /* etiketler farklı yükseklikte olsa da alanlar tabanda hizalı */
  margin-top: 14px;
}
.form-alan span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.islem-form .dugme { width: 100%; }

.tablo-sar { overflow-x: auto; margin-top: 12px; }

.islem-tablo { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.islem-tablo th {
  text-align: left;
  color: var(--metin-soluk);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 8px 10px;
  border-bottom: 1px solid var(--kenar);
}
.islem-tablo td {
  padding: 10px;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
  font-variant-numeric: tabular-nums;
}

.rozet-kucuk { padding: 3px 10px; font-size: 0.75rem; }

/* ── Mobil düzen ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .ozet-izgara { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  main { padding: 16px 12px 32px; }
  .hero-kart, .grafik-kart, .giris-kart { padding: 18px; }
  .grafik-alan { height: 300px; }
  .grafik-alan-kisa { height: 230px; }
  .hero-detay { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .ust-bar { padding: 10px 12px; }
  .marka { gap: 6px; }
  .marka-ad { font-size: 1.0625rem; }
  .nav-baglanti { margin-left: 2px; padding: 6px 7px; font-size: 0.8125rem; }
  .durum { font-size: 0.75rem; }
  .kadi { max-width: 88px; }
  .dugme-kucuk { margin-left: 6px; }

  .kur-fiyatlar { grid-template-columns: 1fr 1fr; gap: 8px; }
  .kur-kutu { padding: 12px 14px; }
  .kur-deger { font-size: 1.5rem; }
  .hero-detay { gap: 8px; }
  .detay-kutu { padding: 10px 12px; }

  .grafik-bas { flex-direction: column; align-items: stretch; }
  .grafik-sec { width: 100%; }
  .periyot-grup { gap: 8px; }
  .periyot-dugme { padding: 8px 10px; min-width: 34px; }
  .grafik-alan { height: 260px; }
  .grafik-alan-kisa { height: 200px; }

  .ozet-kutu .detay-deger { font-size: 1.0625rem; }

  .islem-form { grid-template-columns: 1fr 1fr; }
  .islem-form .form-alan:first-child { grid-column: 1 / -1; } /* tarih tam satır */
  .giris-kart { margin-top: 20px; }
  .form-dugmeler { flex-direction: column; }
  .form-dugmeler .dugme { width: 100%; }

  .islem-tablo { font-size: 0.8125rem; }
  .islem-tablo th, .islem-tablo td { padding: 8px 6px; }

  footer { font-size: 0.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  .canli-nokta.canli, .iskelet, .flas-yukari, .flas-asagi { animation: none; }
  .aralik-dolgu { transition: none; }
}