/* =================================
   KÖK DEĞİŞKENLER (RENK PALETİ VE TEMEL STİLLER)
   ================================= */
:root {
  --bg: #0b1220;
  --header-gradient-start: #0ea5e9;
  --header-gradient-end: #22d3ee;
  --card-bg: #0f172a;
  --text: #e5e7eb;
  --muted: #9aa4b2;
  --accent: #22d3ee;
  --border: #1f2a44;
  --shadow: 0 8px 24px rgba(2, 8, 23, .6);
}

/* =================================
   GENEL SIFIRLAMA VE SAYFA TEMELİ
   ================================= */
* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  /* Arka plana 2 adet radyal gradyan ve ana arka plan rengi ekleniyor */
  background: radial-gradient(1200px 600px at 0% -20%, rgba(14, 165, 233, .15), transparent),
              radial-gradient(1000px 500px at 100% -10%, rgba(34, 211, 238, .12), transparent),
              var(--bg);
  color: var(--text);
}

/* =================================
   HEADER (BAŞLIK) ALANI
   ================================= */
.header {
  background-color: white;
  color: #001018;
  padding: 20px 16px;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  max-width: 960px;
  margin: 0 auto;
}

.logo {  
  height: 84px;  
}

.brand-text h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
}

.brand-text p {
  margin: 4px 0 0;
  font-size: .95rem;
  color: #053b48;
}

/* =================================
   ANA İÇERİK KONTEYNERİ
   ================================= */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 16px;
}

/* =================================
   BANKA KARTLARI VE İÇERİKLERİ
   ================================= */
.bank-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.bank-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, .02), rgba(255, 255, 255, 0)),
              var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 14px;
  box-shadow: var(--shadow);
}

.bank-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  margin-bottom: 10px;
}

.meta .label {
  font-size: .9rem;
}

.meta strong {
  font-size: .95rem;
  color: var(--text);
  font-weight: 600;
}

/* IBAN ve Kopyalama Butonu Satırı */
.iban-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: rgba(2, 8, 23, .4);
  border: 1px dashed #274362;
  padding: 12px;
  border-radius: 12px;
  cursor: pointer;
}

.iban {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: #b6eaff;
  font-size: 1rem;
  letter-spacing: .5px;
}

.copy-btn {
  background: linear-gradient(180deg, #0ea5e9, #0b8dc6);
  color: #001018;
  border: none;
  border-radius: 10px;
  padding: 8px 12px;
  font-weight: 700;
  font-size: .95rem;
  box-shadow: 0 6px 16px rgba(14, 165, 233, .35);
}

.copy-btn:active {
  transform: translateY(1px);
}

/* JavaScript ile 'copied' class'ı eklendiğinde butonun rengini değiştirir */
.bank-card.copied .copy-btn {
  background: linear-gradient(180deg, #22d3ee, #1ab7c9);
}

/* =================================
   NOT VE QR KOD ALANLARI
   ================================= */
.note {
  margin: 10px 0 12px;
  padding: 10px 12px;
  border: 1px solid #1ab7c9;
  border-radius: 12px;
  background: rgba(34, 211, 238, .12);
  color: #eaffff;
  font-weight: 700;
  letter-spacing: .2px;
}

.note strong {
  color: #b6eaff;
  text-decoration: underline;
}

.qr-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
  background: rgba(2, 8, 23, .35);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}

.qr-title {
  font-size: .9rem;
  color: var(--muted);
}

.qr-img {
  width: 100%;
  max-width: 240px;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  border: 1px solid #274362;
  box-shadow: 0 6px 16px rgba(14, 165, 233, .15);
}

/* =================================
   TOAST (BİLDİRİM) VE ANİMASYONU
   ================================= */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: #0ea5e9;
  color: #001018;
  padding: 10px 14px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(14, 165, 233, .35);
  font-weight: 700;
  display: none; /* JavaScript ile 'show' class'ı eklenince görünür olur */
}

.toast.show {
  display: block;
  animation: fade 2s ease;
}

/* Toast bildirimi için solma animasyonu */
@keyframes fade {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(8px);
  }
  10% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  90% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

/* =================================
   FOOTER (ALT BİLGİ)
   ================================= */
.footer {
  padding: 28px 16px;
  text-align: center;
  color: var(--muted);
}

/* =================================
   RESPONSIVE (MOBİL UYUMLULUK)
   ================================= */
/* 640px ve üzeri ekranlarda stilleri güncelle */
@media (min-width: 640px) {
  .brand-text h1 {
    font-size: 1.75rem;
  }

  .bank-card {
    padding: 18px 16px;
  }
}