/* ==========================================================================
   components.css - yeniden kullanilabilir parcalar
   Tipografi > Buton > Medya > Kart > Form > Nav > Footer > Reveal
   ========================================================================== */

/* --------------------------------------------------------------------------
   Tipografi siniflari
   -------------------------------------------------------------------------- */

.bh-display {
  font-family: var(--bh-font-display);
  font-weight: 800;
  font-stretch: var(--bh-width-display);
  font-size: var(--bh-text-display);
  line-height: var(--bh-leading-display);
  letter-spacing: var(--bh-tracking-display);
  text-wrap: balance;
}

.bh-h2 {
  font-family: var(--bh-font-display);
  font-weight: 800;
  font-stretch: var(--bh-width-heading);
  font-size: var(--bh-text-h2);
  line-height: var(--bh-leading-heading);
  letter-spacing: var(--bh-tracking-display);
  text-wrap: balance;
}

.bh-h3 {
  font-family: var(--bh-font-display);
  font-weight: 800;
  font-size: var(--bh-text-h3);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.bh-lead {
  font-size: var(--bh-text-lead);
  line-height: 1.45;
  color: var(--bh-ink-muted);
}

.bh-section--invert .bh-lead {
  color: var(--bh-invert-muted);
}

/* Etiket - hiyerarsi soluklukla degil, boyut ve harf araligiyla kurulur.
   Renk --bh-ink-muted (5.02:1), --bh-ink-soft degil, cunku 13px metin AA ister. */
.bh-label {
  display: block;
  font-family: var(--bh-font-mono);
  font-size: var(--bh-text-label);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: var(--bh-tracking-label);
  text-transform: uppercase;
  color: var(--bh-ink-muted);
}

.bh-section--invert .bh-label {
  color: var(--bh-invert-muted);
}

/* Vurgu rengi metin olarak sadece buyuk baslikta (3.19:1, AA large) */
.bh-spot {
  color: var(--bh-spot);
}

/* --------------------------------------------------------------------------
   Buton
   Birincil: vermilion zemin + koyu murekkep metin = 5.33:1
   Acik metin kullanilmaz, 3.19:1 ile AA'yi gecmez.
   -------------------------------------------------------------------------- */

.bh-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  padding: 0.9rem 1.75rem;
  border: 1px solid transparent;
  border-radius: var(--bh-radius-button);
  background: transparent;
  font-family: var(--bh-font-body);
  font-size: var(--bh-text-small);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition:
    transform var(--bh-duration-fast) var(--bh-ease-out),
    background-color var(--bh-duration-fast) var(--bh-ease-out),
    border-color var(--bh-duration-fast) var(--bh-ease-out),
    color var(--bh-duration-fast) var(--bh-ease-out);
}

.bh-btn:active {
  transform: scale(0.98);
}

.bh-btn--primary {
  background: var(--bh-spot);
  color: var(--bh-spot-fg);
}

.bh-btn--primary:hover {
  background: var(--bh-ink);
  color: var(--bh-paper);
}

.bh-btn--ghost {
  color: var(--bh-ink);
  border-color: var(--bh-ink);
}

.bh-btn--ghost:hover {
  background: var(--bh-ink);
  color: var(--bh-paper);
}

.bh-section--invert .bh-btn--ghost {
  color: var(--bh-invert-fg);
  border-color: var(--bh-invert-fg);
}

.bh-section--invert .bh-btn--ghost:hover {
  background: var(--bh-invert-fg);
  color: var(--bh-invert-bg);
}

/* --------------------------------------------------------------------------
   Duotone medya - stok fotografi marka diline sokar.
   Hover'da gercek renk geri gelir, tiklanabilirligi gosterir.
   -------------------------------------------------------------------------- */

.bh-duotone {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--bh-radius-card);
  background: var(--bh-surface);
}

.bh-duotone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.14);
  transition: filter var(--bh-duration-slow) var(--bh-ease-out);
}

.bh-duotone::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--bh-spot);
  mix-blend-mode: multiply;
  opacity: 0.16;
  pointer-events: none;
  transition: opacity var(--bh-duration-slow) var(--bh-ease-out);
}

.bh-duotone:hover img,
a:hover .bh-duotone img {
  filter: grayscale(0) contrast(1.02);
}

.bh-duotone:hover::after,
a:hover .bh-duotone::after {
  opacity: 0;
}

/* --------------------------------------------------------------------------
   Kart - gorsel uzerine metin. Gradient scrim okunurlugu garantiler.
   -------------------------------------------------------------------------- */

.bh-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 17rem;
  padding: clamp(1.25rem, 1rem + 1vw, 2rem);
  border-radius: var(--bh-radius-card);
  overflow: hidden;
  isolation: isolate;
  background: var(--bh-surface);
  color: #f3f2ef;
}

.bh-card__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.bh-card__media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  /* Metin bolgesinde acik fotograflarda da AA saglanmali:
     alt %45 en az 0.70 opaklikta koyu kalir. */
  background: linear-gradient(
    to top,
    rgb(8 8 8 / 0.94) 0%,
    rgb(8 8 8 / 0.86) 28%,
    rgb(8 8 8 / 0.62) 52%,
    rgb(8 8 8 / 0.3) 78%,
    rgb(8 8 8 / 0.14) 100%
  );
}

.bh-card__title {
  font-family: var(--bh-font-display);
  font-weight: 800;
  font-size: var(--bh-text-h3);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.bh-card__desc {
  margin-top: 0.6rem;
  max-width: 36ch;
  font-size: var(--bh-text-small);
  line-height: 1.5;
  color: rgb(243 242 239 / 0.86);
}

.bh-card__arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.35rem;
  font-family: var(--bh-font-mono);
  font-size: var(--bh-text-label);
  letter-spacing: var(--bh-tracking-label);
  text-transform: uppercase;
  color: var(--bh-spot);
  transition: gap var(--bh-duration-fast) var(--bh-ease-out);
}

a:hover .bh-card__arrow {
  gap: 0.95rem;
}

/* --------------------------------------------------------------------------
   Form - label ustte, hata altta, placeholder label degil.
   Hata metni murekkep renginde: vermilion 13px metinde AA'yi gecmez,
   vurgu sadece kenarlikta tasinir (UI bileseni icin 3:1 yeterli).
   -------------------------------------------------------------------------- */

.bh-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.bh-field__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--bh-ink);
}

.bh-field__input {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--bh-paper);
  border: 1px solid var(--bh-ink-soft);
  border-radius: var(--bh-radius-input);
  color: var(--bh-ink);
  transition:
    border-color var(--bh-duration-fast) var(--bh-ease-out),
    box-shadow var(--bh-duration-fast) var(--bh-ease-out);
}

.bh-field__input::placeholder {
  color: var(--bh-ink-soft);
}

.bh-field__input:hover {
  border-color: var(--bh-ink);
}

.bh-field__input:focus-visible {
  border-color: var(--bh-spot);
  outline: 2px solid var(--bh-spot);
  outline-offset: 1px;
}

.bh-field__input[aria-invalid="true"] {
  border-color: var(--bh-spot);
  box-shadow: inset 3px 0 0 var(--bh-spot);
}

.bh-field__error {
  min-height: 1.3em;
  font-size: var(--bh-text-label);
  font-weight: 600;
  line-height: 1.3;
  color: var(--bh-ink);
}

.bh-field__error:empty {
  min-height: 0;
}

textarea.bh-field__input {
  min-height: 9rem;
  resize: vertical;
}

select.bh-field__input {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position:
    calc(100% - 1.15rem) calc(50% + 1px),
    calc(100% - 0.85rem) calc(50% + 1px);
  background-size: 6px 6px;
  background-repeat: no-repeat;
  padding-right: 2.75rem;
}

/* --------------------------------------------------------------------------
   Nav - desktop tek satir, 72px. 1024 alti hamburger + tam ekran menu.
   -------------------------------------------------------------------------- */

.bh-nav {
  position: sticky;
  top: 0;
  z-index: var(--bh-z-nav);
  background: color-mix(in srgb, var(--bh-paper) 86%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--bh-duration-normal) var(--bh-ease-out);
}

.bh-nav.is-stuck {
  border-bottom-color: var(--bh-ink-line);
}

/* backdrop-filter, icindeki position:fixed ogeler icin containing block yaratir.
   Menu acikken kaldirilmazsa tam ekran overlay viewport'a degil 72px'lik nav'a
   gore konumlanir ve seffaf, daralmis bir kutu olarak cizilir. */
.bh-nav.is-menu-open {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: var(--bh-paper);
}

.bh-nav__inner {
  height: var(--bh-nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.bh-nav__brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* Logo dairesel bir rozet. Yay uzerindeki "PROFESYONEL YAKLASIM" /
   "KALITELI HIZMET" yazisinin glif yuksekligi logo boyunun %1.07'si, yani
   72px'te 0.77px. Nav olceginde okunmasi mumkun degil; okunur olmasi icin
   logo ~700px olmali. Nav'da rozet bir marka isareti olarak calisir,
   yazinin kendisi footer'daki buyuk boyutta okunur.
   Nav yuksekligi 80px oldugu icin 72px ust sinirdir. */
.bh-nav__logo {
  width: 72px;
  height: 72px;
}

@media (max-width: 400px) {
  .bh-nav__logo {
    width: 58px;
    height: 58px;
  }
}

/* Kilitli lockup - rozet + okunur kelime isareti.
   Marka adinin nav olceginde okunmasini isteyen varyant. */
.bh-nav__brand--lockup {
  gap: 0.7rem;
}

.bh-nav__wordmark {
  display: none;
  font-family: var(--bh-font-display);
  font-weight: 800;
  font-stretch: 112%;
  font-size: 0.9375rem;
  line-height: 1.05;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--bh-ink);
  white-space: nowrap;
}

.bh-nav__wordmark span {
  display: block;
  font-size: 0.6875rem;
  font-weight: 500;
  font-stretch: 100%;
  letter-spacing: 0.16em;
  color: var(--bh-ink-muted);
}

@media (min-width: 560px) {
  .bh-nav__brand--lockup .bh-nav__wordmark {
    display: block;
  }
}

:root[data-theme="dark"] .bh-nav__logo,
:root[data-theme="dark"] .bh-footer__logo {
  filter: invert(1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .bh-nav__logo,
  :root:not([data-theme="light"]) .bh-footer__logo {
    filter: invert(1);
  }
}

.bh-nav__menu {
  display: none;
  gap: 2.25rem;
}

.bh-nav__menu a {
  position: relative;
  padding-block: 0.35rem;
  font-size: var(--bh-text-small);
  font-weight: 500;
}

.bh-nav__menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--bh-spot);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--bh-duration-fast) var(--bh-ease-out);
}

.bh-nav__menu a:hover::after,
.bh-nav__menu a[aria-current="page"]::after {
  transform: scaleX(1);
}

.bh-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Tema anahtari - ikonlu, kenarligi belirgin.
   Ikon yollari Tabler Icons (MIT): sun ve moon. */
.bh-nav__icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--bh-ink);
  background: transparent;
  border: 1px solid var(--bh-ink-soft);
  border-radius: var(--bh-radius-button);
  cursor: pointer;
  transition:
    color var(--bh-duration-fast) var(--bh-ease-out),
    background-color var(--bh-duration-fast) var(--bh-ease-out),
    border-color var(--bh-duration-fast) var(--bh-ease-out),
    transform var(--bh-duration-fast) var(--bh-ease-out);
}

.bh-nav__icon:hover {
  color: var(--bh-spot-fg);
  background: var(--bh-spot);
  border-color: var(--bh-spot);
}

.bh-nav__icon:active {
  transform: scale(0.94);
}

.bh-nav__icon svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Acik temada ay gorunur (tiklayinca karanliga gecer), koyu temada gunes. */
.bh-nav__icon-sun {
  display: none;
}

:root[data-theme="dark"] .bh-nav__icon-sun {
  display: block;
}

:root[data-theme="dark"] .bh-nav__icon-moon {
  display: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .bh-nav__icon-sun {
    display: block;
  }

  :root:not([data-theme="light"]) .bh-nav__icon-moon {
    display: none;
  }
}

.bh-nav__cta {
  display: none;
}

.bh-nav__toggle {
  width: 40px;
  height: 40px;
  display: grid;
  place-content: center;
  gap: 6px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.bh-nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--bh-ink);
  transition: transform var(--bh-duration-fast) var(--bh-ease-out);
}

.is-menu-open .bh-nav__toggle span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.is-menu-open .bh-nav__toggle span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .bh-nav__menu {
    display: flex;
  }

  .bh-nav__cta {
    display: inline-flex;
  }

  .bh-nav__toggle {
    display: none;
  }
}

@media (max-width: 1023px) {
  .is-menu-open .bh-nav__menu {
    display: flex;
    position: fixed;
    inset: var(--bh-nav-h) 0 0 0;
    z-index: var(--bh-z-menu);
    flex-direction: column;
    justify-content: center;
    gap: 1.25rem;
    padding: var(--bh-space-gutter);
    background: var(--bh-paper);
  }

  .is-menu-open .bh-nav__menu a {
    font-family: var(--bh-font-display);
    font-weight: 800;
    font-stretch: var(--bh-width-heading);
    font-size: clamp(2rem, 1rem + 6vw, 3.25rem);
    letter-spacing: var(--bh-tracking-display);
  }

  .is-menu-open .bh-nav__menu a::after {
    height: 3px;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.bh-footer {
  border-top: 1px solid var(--bh-ink-line);
  padding-block: clamp(3rem, 2rem + 4vw, 6rem) 2rem;
}

.bh-footer__top {
  display: grid;
  gap: 2.75rem;
  grid-template-columns: 1fr;
}

/* Footer'da yer var; rozet burada daha buyuk basilir. */
.bh-footer__logo {
  width: 104px;
  height: 104px;
  margin-bottom: 1.25rem;
}

.bh-footer__brand p {
  max-width: 34ch;
  font-size: var(--bh-text-small);
  color: var(--bh-ink-muted);
}

.bh-footer__col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.7rem;
}

.bh-footer__col .bh-label {
  margin-bottom: 0.3rem;
}

.bh-footer__link {
  position: relative;
  font-size: var(--bh-text-small);
  color: var(--bh-ink-muted);
  transition: color var(--bh-duration-fast) var(--bh-ease-out);
}

.bh-footer__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: var(--bh-spot);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--bh-duration-fast) var(--bh-ease-out);
}

.bh-footer__link:hover {
  color: var(--bh-ink);
}

.bh-footer__link:hover::after {
  transform: scaleX(1);
}

.bh-footer__cta {
  margin-top: 0.6rem;
}

/* Kunye - ticari unvan, adres, vergi ve MERSIS bilgileri */
.bh-footer__legal {
  margin-top: clamp(2.5rem, 2rem + 2vw, 4rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--bh-ink-line);
  display: grid;
  gap: 0.35rem;
  font-size: var(--bh-text-label);
  line-height: 1.5;
  color: var(--bh-ink-muted);
}

.bh-footer__unvan {
  font-weight: 500;
  color: var(--bh-ink);
}

.bh-footer__legal + .bh-footer__bottom {
  margin-top: 1.75rem;
}

.bh-footer__bottom {
  margin-top: clamp(2.5rem, 2rem + 2vw, 4rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--bh-ink-line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--bh-font-mono);
  font-size: var(--bh-text-label);
  color: var(--bh-ink-muted);
}

@media (min-width: 768px) {
  .bh-footer__top {
    grid-template-columns: 1.7fr 1fr 1fr 1.1fr;
    gap: 2rem;
  }
}

/* --------------------------------------------------------------------------
   Reveal - JS .is-visible ekler. JS yoksa veya reduced-motion'da her sey acik.
   -------------------------------------------------------------------------- */

.bh-reveal {
  opacity: 0;
  transform: translateY(26px);
}

.bh-reveal.is-visible {
  opacity: 1;
  transform: none;
  transition:
    opacity var(--bh-duration-slow) var(--bh-ease-out),
    transform var(--bh-duration-slow) var(--bh-ease-out);
  transition-delay: var(--bh-reveal-delay, 0ms);
}

.no-js .bh-reveal {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .bh-reveal {
    opacity: 1;
    transform: none;
  }
}