/* ==========================================================================
   GLOBAL STYLES & LAYOUT — fá Portfolyo
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--color-text-main);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-page);
  color: var(--color-text-main);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  padding-top: var(--header-height-desktop);
}

@media (max-width: 809px) {
  body {
    padding-top: var(--header-height-mobile);
  }
}

body.overlay-open {
  overflow: hidden;
}

/* SEO ve Ekran Okuyucu Gizli Metin Sınıfı (SR-Only / Visually Hidden) */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: normal !important;
  border: 0 !important;
}

/* Bölüm ve Görsel Çerçeveleri */
.portfolio-section {
  width: 100%;
  position: relative;
  scroll-margin-top: var(--header-height-desktop);
}


.image-wrapper {
  position: relative;
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  line-height: 0;
  background-color: var(--bg-page);
  scroll-margin-top: var(--header-height-desktop);
}

@media (max-width: 809px) {
  .portfolio-section,
  .image-wrapper {
    scroll-margin-top: var(--header-height-mobile);
  }
}

.portfolio-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: var(--container-max-width);
  margin: 0 auto;
  border: none;
  outline: none;
  background-color: var(--bg-page);
}

/* ==========================================================================
   HOTSPOTS (GİRİŞ, İÇİNDEKİLER, TEŞEKKÜRLER TIKLANABİLİR ALANLAR)
   ========================================================================== */
.hotspot-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: var(--z-hotspots);
}

.hotspot-link {
  position: absolute;
  pointer-events: auto;
  border-radius: var(--radius-pill);
  background-color: transparent;
  cursor: pointer;
  outline: none;
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.hotspot-link:hover {
  background-color: var(--color-primary-subtle);
}

.hotspot-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Ok Butonları için Hafif Karemsi/Oval Pill */
.hotspot-arrow {
  border-radius: 24px;
}

/* ==========================================================================
   İLETİŞİM ALANI & FOOTER
   ========================================================================== */
#iletisim {
  width: 100%;
  background-color: var(--bg-page);
  padding: 96px 24px 48px;
  position: relative;
}

.contact-container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-title {
  font-size: var(--font-size-heading);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-text-main);
  margin-bottom: 36px;
}

.contact-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-bottom: 72px;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-pill);
  text-decoration: none;
  background-color: transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.contact-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  transition: transform var(--transition-fast);
}

.contact-btn:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 51, 255, 0.2);
}

.contact-btn:hover svg {
  transform: scale(1.08);
}

.contact-btn:active {
  transform: translateY(0);
}

/* Footer Alt Bilgi */
.site-footer {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

/* Sayı Tipografisi (Archivo Semi-Bold) */
.num-font {
  font-family: var(--font-family-number, 'Archivo', sans-serif);
  font-weight: 600;
}

@media (max-width: 809px) {
  #iletisim {
    padding: 64px 20px 36px;
  }
  
  .contact-title {
    font-size: 26px;
    margin-bottom: 28px;
  }

  .contact-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    margin-bottom: 56px;
  }

  .contact-btn {
    width: 100%;
    justify-content: center;
    padding: 14px 24px;
  }

  .site-footer {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* ==========================================================================
   YUKARI ÇIK BUTONU (BACK TO TOP)
   ========================================================================== */
.back-to-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-pill);
  background-color: var(--color-primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-fab);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.9);
  transition: opacity var(--transition-normal), 
              transform var(--transition-normal), 
              visibility var(--transition-normal),
              background-color var(--transition-fast),
              box-shadow var(--transition-fast);
  box-shadow: 0 4px 20px rgba(0, 51, 255, 0.25);
  outline: none;
}

.back-to-top-btn svg {
  width: 22px;
  height: 22px;
  stroke: #ffffff;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--transition-fast);
}

.back-to-top-btn.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top-btn:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 6px 24px rgba(0, 51, 255, 0.35);
  transform: translateY(-2px) scale(1.05);
}

.back-to-top-btn:hover svg {
  transform: translateY(-2px);
}

.back-to-top-btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}