/**
 * Linatech Araçlar — kâr hesaplayıcı
 *
 * Linatech temasının belirteçlerini kullanır; başka bir temada
 * yedek değerlere düşerek çalışmaya devam eder.
 */

.lk {
  --lk-bg:        var(--lt-surface, #ffffff);
  --lk-soft:      var(--lt-bg-soft, #f6f8fb);
  --lk-alt:       var(--lt-surface-alt, #f1f5f9);
  --lk-line:      var(--lt-border, #e2e8f0);
  --lk-line-2:    var(--lt-border-strong, #cbd5e1);
  --lk-ink:       var(--lt-text, #0f172a);
  --lk-soft-ink:  var(--lt-text-soft, #475569);
  --lk-muted:     var(--lt-text-muted, #64748b);
  --lk-accent:    var(--lt-accent, #0b63f6);
  --lk-on-accent: var(--lt-on-accent, #ffffff);
  --lk-good:      var(--lt-success, #0d9488);
  --lk-bad:       #dc2626;
  --lk-warn:      var(--lt-warning, #b45309);
  --lk-radius:    var(--lt-radius, 14px);
  --lk-radius-sm: var(--lt-radius-sm, 9px);

  background: var(--lk-bg);
  border: 1px solid var(--lk-line);
  border-radius: var(--lk-radius);
  padding: clamp(20px, 3vw, 30px);
  margin: 32px 0;
  color: var(--lk-ink);
  font-size: 16px;
  line-height: 1.6;
}

/* Başlık ------------------------------------------------------------- */

.lk__head { margin-bottom: 24px; }

.lk__title {
  margin: 0 0 6px;
  font-size: clamp(1.25rem, 1.1rem + .6vw, 1.5rem);
  line-height: 1.25;
}

.lk__sub {
  margin: 0;
  color: var(--lk-soft-ink);
  font-size: .95rem;
}

/* Düzen -------------------------------------------------------------- */

.lk__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

@media (max-width: 760px) {
  .lk__grid { grid-template-columns: 1fr; }
}

/* Form --------------------------------------------------------------- */

.lk__form { margin: 0; }

.lk__set {
  border: 0;
  padding: 0;
  margin: 0 0 20px;
}

.lk__legend {
  padding: 0;
  margin-bottom: 10px;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--lk-muted);
}

.lk__field { margin-bottom: 14px; }

.lk__field > label {
  display: block;
  margin-bottom: 5px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--lk-ink);
}

.lk__hint {
  font-weight: 400;
  font-size: .8rem;
  color: var(--lk-muted);
  margin-left: 5px;
}

.lk__input {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--lk-line-2);
  border-radius: var(--lk-radius-sm);
  background: var(--lk-bg);
  overflow: hidden;
  transition: border-color .15s ease, box-shadow .15s ease;
}

.lk__input:focus-within {
  border-color: var(--lk-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--lk-accent) 16%, transparent);
}

.lk__input input,
.lk__input select {
  flex: 1;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 10px 12px;
  font: inherit;
  font-size: .98rem;
  color: var(--lk-ink);
  outline: none;
  -moz-appearance: textfield;
}

.lk__input input::-webkit-outer-spin-button,
.lk__input input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Select: arka plan şeffaf bırakılırsa tarayıcı açılır listeyi kendi
   varsayılan (beyaz) zeminiyle çizer, metin rengi ise mirasla açık kalır
   ve seçenekler okunmaz olur. Zemin ve renk açıkça verilir. */

.lk__input select {
  cursor: pointer;
  background-color: var(--lk-bg);
  color: var(--lk-ink);
}

.lk__input select option {
  background-color: var(--lk-bg);
  color: var(--lk-ink);
}

/* Tarayıcının native açılır listesi doğru temada çizilsin. */
.lk { color-scheme: light; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .lk { color-scheme: dark; }
}

:root[data-theme="dark"] .lk { color-scheme: dark; }

.lk__unit {
  display: grid;
  place-items: center;
  padding: 0 13px;
  background: var(--lk-alt);
  border-left: 1px solid var(--lk-line);
  color: var(--lk-muted);
  font-size: .9rem;
  font-weight: 600;
}

.lk__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.lk__note {
  margin: 6px 0 0;
  font-size: .82rem;
  color: var(--lk-warn);
}

.lk__reset {
  background: none;
  border: 1px solid var(--lk-line-2);
  border-radius: 999px;
  padding: 8px 18px;
  font: inherit;
  font-size: .88rem;
  color: var(--lk-soft-ink);
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease;
}

.lk__reset:hover {
  border-color: var(--lk-accent);
  color: var(--lk-accent);
}

/* Sonuç -------------------------------------------------------------- */

.lk__sonuc {
  background: var(--lk-soft);
  border: 1px solid var(--lk-line);
  border-radius: var(--lk-radius);
  padding: 20px;
  position: sticky;
  top: 86px;
}

@media (max-width: 760px) {
  .lk__sonuc { position: static; }
}

.lk__bos {
  color: var(--lk-muted);
  font-size: .92rem;
  text-align: center;
  padding: 28px 10px;
}

.lk__bos p { margin: 0; }

.lk__ana {
  text-align: center;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--lk-line);
}

.lk__ana-etiket {
  display: block;
  font-size: .8rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--lk-muted);
  margin-bottom: 4px;
}

.lk__ana-deger {
  display: block;
  font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.3rem);
  font-weight: 760;
  letter-spacing: -.025em;
  line-height: 1.15;
  color: var(--lk-good);
}

.lk__ana-deger.is-zarar { color: var(--lk-bad); }

.lk__ana-alt {
  display: block;
  margin-top: 5px;
  font-size: .88rem;
  color: var(--lk-soft-ink);
}

/* Döküm tablosu ------------------------------------------------------ */

.lk__tablo {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  margin: 0 0 18px;
}

.lk__tablo-baslik {
  caption-side: top;
  text-align: left;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--lk-muted);
  padding-bottom: 8px;
}

.lk__tablo th,
.lk__tablo td {
  padding: 7px 0;
  border: 0;
  border-bottom: 1px solid var(--lk-line);
  text-align: left;
  font-weight: 400;
  color: var(--lk-soft-ink);
}

.lk__tablo td {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--lk-ink);
  white-space: nowrap;
}

.lk__tablo .lk__eksi td { color: var(--lk-soft-ink); }

.lk__tablo .lk__ara th,
.lk__tablo .lk__ara td {
  font-weight: 650;
  color: var(--lk-ink);
}

/* Ek kutular --------------------------------------------------------- */

.lk__ek {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}

.lk__ek-kutu {
  background: var(--lk-bg);
  border: 1px solid var(--lk-line);
  border-radius: var(--lk-radius-sm);
  padding: 12px 14px;
}

.lk__ek-kutu span {
  display: block;
  font-size: .82rem;
  color: var(--lk-muted);
}

.lk__ek-kutu strong {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  margin: 2px 0 1px;
}

.lk__ek-kutu small {
  display: block;
  font-size: .78rem;
  color: var(--lk-muted);
}

/* Uyarı -------------------------------------------------------------- */

.lk__uyari {
  margin: 0 0 16px;
  padding: 10px 13px;
  border-radius: var(--lk-radius-sm);
  background: color-mix(in srgb, var(--lk-warn) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--lk-warn) 32%, transparent);
  color: var(--lk-warn);
  font-size: .86rem;
}

/* İndirme ------------------------------------------------------------ */

.lk__indir {
  display: block;
  width: 100%;
  padding: 12px 18px;
  border: 0;
  border-radius: 999px;
  background: var(--lk-accent);
  color: var(--lk-on-accent);
  font: inherit;
  font-size: .94rem;
  font-weight: 620;
  cursor: pointer;
  transition: filter .15s ease, transform .15s ease;
}

.lk__indir:hover { filter: brightness(1.08); transform: translateY(-1px); }

/* Varsayımlar -------------------------------------------------------- */

.lk__varsayim {
  margin-top: 22px;
  border-top: 1px solid var(--lk-line);
  padding-top: 16px;
}

.lk__varsayim summary {
  cursor: pointer;
  font-size: .9rem;
  font-weight: 600;
  color: var(--lk-soft-ink);
}

.lk__varsayim summary:hover { color: var(--lk-accent); }

.lk__varsayim-ic {
  padding-top: 12px;
  font-size: .88rem;
  color: var(--lk-soft-ink);
}

.lk__varsayim-ic ul { margin: 0 0 12px; padding-left: 1.2em; }
.lk__varsayim-ic li + li { margin-top: 6px; }
.lk__varsayim-ic p { margin: 0; font-style: italic; }

.lk__kaynak {
  margin: 14px 0 0;
  font-size: .8rem;
  color: var(--lk-muted);
}

/* Yazdırma ----------------------------------------------------------- */

@media print {
  .lk__form, .lk__indir, .lk__reset, .lk__varsayim { display: none; }
  .lk__grid { grid-template-columns: 1fr; }
  .lk { border: 0; padding: 0; }
}