/* ===== OB KDV – PRO GÖRÜNÜM ================= */
:root {
  --obkdv-primary: #2563eb;       /* Canlı Mavi (Ana Renk) */
  --obkdv-primary-hover: #1d4ed8;
  --obkdv-dark-bg: #1e293b;       /* Koyu Lacivert/Siyah */
  --obkdv-dark-surface: #0f172a;
  --obkdv-border: #e2e8f0;
  --obkdv-text: #334155;          /* Genel Metin */
  --obkdv-input-text: #1e293b;    /* Koyu Metin */
  --obkdv-muted: #64748b;         /* Silik Metin */
  --obkdv-success: #10b981;       /* Kâr/Toplam Yeşili */
  --obkdv-radius: 12px;
}

.obkdv {
  max-width: 1200px;
  margin: 1.5rem auto;
  padding: 0 1rem;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--obkdv-text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.obkdv * {
  box-sizing: border-box;
}

.obkdv__title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 1.2rem; 
  color: #1e293b;
  letter-spacing: -0.02em;
  text-align: center;
}

.obkdv-title { display: none; }

/* ================= GRID / KARTLAR ================= */

.obkdv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

.obkdv-card {
  background: #ffffff;
  border-radius: var(--obkdv-radius);
  border: 1px solid var(--obkdv-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* Sol Kart: Form */
.obkdv-grid > .obkdv-card.form {
  padding: 1.25rem;
}

/* Sağ Kart: Sonuçlar */
.obkdv-grid > .obkdv-card.results {
  background: linear-gradient(145deg, var(--obkdv-dark-bg), var(--obkdv-dark-surface));
  color: #f1f5f9;
  border: none;
  padding: 1.25rem; 
  justify-content: center;
}

/* ================= MOD SEÇİCİ (TAB) ================= */
.obkdv .obkdv-modes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  background: #f1f5f9;
  padding: 4px;
  border-radius: 10px;
}

.obkdv .obkdv-modes .seg {
  position: relative;
  margin: 0;
  cursor: pointer;
}

.obkdv .obkdv-modes .seg input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.obkdv .obkdv-modes .seg span {
  height: 40px;
  border-radius: 7px;
  border: none;
  background: transparent;
  font-weight: 600;
  font-size: 14px;
  color: var(--obkdv-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 10px;
  transition: all 0.2s ease;
}

.obkdv .obkdv-modes .seg span:hover {
  color: var(--obkdv-primary);
}

.obkdv .obkdv-modes .seg input:checked + span {
  background: #ffffff;
  color: var(--obkdv-input-text);
  font-weight: 700;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* ---------- FORM BİLEŞENLERİ ---------- */
.obkdv .lbl {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--obkdv-text);
  margin-bottom: 0.3rem;
  letter-spacing: 0.01em;
}

.obkdv .mt { margin-top: 1rem; }

/* Tutar Input */
.obkdv .amount-row {
  display: flex;
  align-items: center;
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 0;
  position: relative;
  transition: all 0.2s ease-in-out;
  height: 48px;
}

.obkdv .amount-row:focus-within {
  background-color: #fff;
  border-color: var(--obkdv-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.obkdv .amount-row .currency {
  position: absolute;
  left: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--obkdv-muted);
  pointer-events: none;
  z-index: 2;
}

#obkdv-amount {
  flex: 1;
  height: 100%;
  border: 0;
  background: transparent;
  font-size: 16px;
  font-weight: 500;
  color: var(--obkdv-input-text);
  outline: none;
  padding: 0 16px 0 32px; /* Prefix boşluğu */
  border-radius: 8px;
}

/* Oranlar */
.rate-row {
  display: flex;
  gap: 0.5rem;
  background: #f1f5f9;
  padding: 4px;
  border-radius: 10px;
}

.rate,
.rate-custom {
  flex: 1;
  min-width: 0;
}

.rate,
.rate-custom input {
  height: 40px;
  border: none;
  border-radius: 7px;
  font-size: 15px;
  font-weight: 600;
  color: var(--obkdv-muted);
  background: transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.rate:hover {
  background: rgba(255,255,255,0.5);
  color: var(--obkdv-primary);
}

.rate.is-active {
  background: #ffffff;
  color: var(--obkdv-input-text);
  font-weight: 700;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.rate-custom { padding: 0; }
.rate-custom input {
  width: 100%;
  background: #ffffff;
  border: 1px solid transparent;
  text-align: center;
  padding: 0 8px;
  cursor: text;
  color: var(--obkdv-input-text);
  outline: none;
}
.rate-custom input:focus {
  border-color: var(--obkdv-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

/* ---------- AKSİYON BUTONLARI ---------- */
.actions {
  margin-top: auto;
  padding-top: 1.5rem;
  display: flex;
  flex-direction: row;
  gap: 1rem;
}

.actions .btn {
  flex: 1;
  min-width: 0;
}

.btn.lg {
  height: 44px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn.primary {
  background: var(--obkdv-primary);
  color: #fff;
  border: none;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn.primary:hover {
  background: var(--obkdv-primary-hover);
  transform: translateY(-1px);
}

.btn.ghost {
  background: #fff;
  border: 1px solid var(--obkdv-border);
  color: var(--obkdv-muted);
}
.btn.ghost:hover {
  background: #f8fafc;
  color: var(--obkdv-text);
}

/* ---------- SONUÇ KARTLARI (Koyu Tema) ---------- */
.results .res {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 1rem;
}

.results .res:last-child { margin-bottom: 0; }

.results .res-hd {
  font-size: 15px;
  font-weight: 600;
  color: #cbd5e1;
}

.results .res-val {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  font-variant-numeric: tabular-nums;
}

/* Açıklama Metinleri (Alt satır) */
.results .res::after {
  content: "";
  flex-basis: 100%;
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: #94a3b8;
}

.results .res:nth-child(1)::after { content: "Vergi dâhil toplam tutar"; }
.results .res:nth-child(2)::after { content: "Hesaplanan KDV tutarı"; }
.results .res:nth-child(3)::after { content: "Vergi hariç net tutar"; }

/* ================= RESPONSIVE ================= */
@media (max-width: 900px) {
  .obkdv-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 640px) {
  .obkdv { padding: 0 0.5rem; margin: 0 auto 2rem; font-size: 13px; }
  .obkdv__title { font-size: 20px; margin-bottom: 1.2rem; }
  
  .obkdv-card { padding: 1.25rem !important; }
  
  /* MOBİL: Mod seçici yan yana ve okunabilir büyük yazı */
  .obkdv .obkdv-modes { 
    grid-template-columns: 1fr 1fr; 
    gap: 8px; 
    margin-bottom: 1rem; 
  }
  .obkdv .obkdv-modes .seg span { 
    font-size: 13px; /* Yazı tekrar büyütüldü */
    padding: 6px 4px;
    line-height: 1.25;
    white-space: normal; /* Gerekirse 2 satıra kırılacak */
    height: auto; /* Sabit yükseklik kaldırıldı */
    min-height: 46px; /* Dokunma alanı korundu */
  }
  
  .obkdv .amount-row { padding: 0 10px; }
  #obkdv-amount { font-size: 16px; }

  .rate-row { flex-wrap: wrap; gap: 4px; }
  .rate, .rate-custom input { height: 44px; font-size: 14px; }

  /* MOBİL: Butonlar yan yana */
  .actions { 
    flex-direction: row; 
    padding-top: 1.25rem; 
    gap: 8px;
  }
  .btn.lg { height: 44px; font-size: 14px; }

  .results .res { padding: 14px 16px; margin-bottom: 12px; }
  .results .res-val { font-size: 18px; }
}