:root {
  --bg: #070707;
  --ink: #f5f5f2;
  --muted: rgba(245,245,242,.55);
  --line: rgba(255,255,255,.10);
  --ease: cubic-bezier(.16,1,.3,1);
  --font:
    -apple-system,
    BlinkMacSystemFont,
    "SF Pro Display",
    "SF Pro Text",
    "Helvetica Neue",
    Helvetica,
    Arial,
    "Segoe UI",
    sans-serif;
}

* { box-sizing: border-box; }

html,
body {
  margin: 0;
  width: 100%;
  min-width: 320px;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html { overflow: hidden; }

body {
  min-height: 100svh;
  overflow: hidden;
}

a,
button { font: inherit; }

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  padding: 0;
  background: transparent;
}

/* =========================================================
   PORTFOLIO
   ========================================================= */

.portfolio-scroll {
  position: fixed;
  inset: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
  background: #070707;
}

.portfolio-scroll::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.portfolio-pages {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(14px,1.35vw,24px);
  padding:
    max(18px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right))
    max(108px, calc(84px + env(safe-area-inset-bottom)))
    max(18px, env(safe-area-inset-left));
}

.portfolio-page {
  position: relative;
  overflow: hidden;
  background: #0d0d0d;
  border: 1px solid rgba(255,255,255,.055);
  border-radius: 12px;
  box-shadow: 0 20px 54px rgba(0,0,0,.32);
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 480ms ease,
    transform 700ms var(--ease);
}

.portfolio-page.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* İlk iki dosya dikey. */
.portfolio-page.portrait {
  width: min(100%, 820px);
}

.portfolio-page.portrait .pdf-stage {
  /* İlk iki PDF'nin gerçek sayfa oranına yakın: gereksiz alt boşluğu kaldırır. */
  aspect-ratio: 3 / 4;
}

/* 3–16 yatay. */
.portfolio-page.landscape {
  width: min(100%, 1280px);
}

.portfolio-page.landscape .pdf-stage {
  aspect-ratio: 16 / 9;
}

.pdf-stage {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: #111;
  contain: paint;
}

/*
  Dış kütüphane yok.
  Chromium'un kendi PDF görüntüleyicisi kullanılıyor.
  URL'deki toolbar=0 mevcut Chromium tarafından destekleniyor.
  Her PDF tek sayfa olduğu ve view=Fit kullanıldığı için sayfa
  kendi alanına sığdırılır.
*/
.pdf-frame {
  position: absolute;
  inset: -2px;
  width: calc(100% + 4px);
  height: calc(100% + 4px);
  border: 0;
  overflow: hidden;
  background: #111;
  opacity: 0;
  transition: opacity 260ms ease;
}

.portfolio-page.is-loaded .pdf-frame {
  opacity: 1;
}

/*
  Mobile Safari'nin native PDF viewer davranışından bağımsız,
  PDF sayfasından üretilmiş same-origin responsive önizleme.
  Desktop mevcut PDF iframe davranışını korur.
*/
.portfolio-image {
  display: none;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: #111;
  opacity: 0;
  transition: opacity 220ms ease;
}

.portfolio-page.is-loaded .portfolio-image {
  opacity: 1;
}

.placeholder {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-items: center;
  color: rgba(245,245,242,.28);
  background:
    linear-gradient(
      105deg,
      #0d0d0d 8%,
      #171717 18%,
      #0d0d0d 33%
    );
  background-size: 200% 100%;
  animation: shimmer 1.6s linear infinite;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: .06em;
  text-transform: uppercase;
  pointer-events: none;
  transition:
    opacity 220ms ease,
    visibility 220ms;
}

.portfolio-page.is-loaded .placeholder {
  opacity: 0;
  visibility: hidden;
}

.portfolio-page.is-error .placeholder {
  animation: none;
  color: rgba(245,245,242,.62);
  background: #111;
}

/* =========================================================
   STATUS
   ========================================================= */

.portfolio-status {
  position: fixed;
  z-index: 120;
  top: calc(24px + env(safe-area-inset-top));
  left: calc(24px + env(safe-area-inset-left));
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 999px;
  color: rgba(245,245,242,.76);
  background: rgba(7,7,7,.90);
  box-shadow: 0 8px 28px rgba(0,0,0,.24);
  font-size: 10px;
  font-weight: 680;
  letter-spacing: .06em;
  text-transform: uppercase;
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px);
  animation: fade-up 600ms var(--ease) 260ms forwards;
}

.portfolio-status::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

/* =========================================================
   GLOBAL DESKTOP NAV — diğer sayfalarla aynı ölçü
   ========================================================= */

.desktop-menu-wrap {
  position: fixed;
  z-index: 200;
  right: calc(22px + env(safe-area-inset-right));
  bottom: calc(22px + env(safe-area-inset-bottom));
  opacity: 0;
  transform: translateY(10px);
  animation: fade-up 620ms var(--ease) 480ms forwards;
}

.desktop-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 5px;
  border: 1px solid rgba(10,10,10,.08);
  border-radius: 15px;
  background: #fff;
  box-shadow:
    0 10px 30px rgba(0,0,0,.14),
    0 1px 2px rgba(0,0,0,.06);
}

.desktop-menu a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 13px;
  border-radius: 10px;
  color: #111;
  font-size: 13px;
  font-weight: 630;
  letter-spacing: -.022em;
  white-space: nowrap;
  transition:
    background-color 180ms ease,
    transform 220ms var(--ease);
}

.desktop-menu a:hover {
  background: #f0f0ed;
  transform: translateY(-1px);
}

.desktop-menu a[aria-current="page"] {
  color: #fff;
  background: #0a0a0a;
}

/* =========================================================
   MOBILE NAV
   ========================================================= */

.mobile-nav {
  display: none;
  position: fixed;
  z-index: 999;
  right: calc(18px + env(safe-area-inset-right));
  bottom: calc(18px + env(safe-area-inset-bottom));
}

.mobile-menu-panel {
  position: absolute;
  right: 0;
  bottom: 56px;
  width: min(
    310px,
    calc(100vw - 28px - env(safe-area-inset-left) - env(safe-area-inset-right))
  );
  max-height: min(70svh,430px);
  overflow-y: auto;
  padding: 7px;
  border: 1px solid rgba(10,10,10,.08);
  border-radius: 18px;
  background: #fff;
  box-shadow:
    0 20px 48px rgba(0,0,0,.24),
    0 1px 2px rgba(0,0,0,.05);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(.985);
  transform-origin: right bottom;
  transition:
    opacity 180ms ease,
    visibility 180ms,
    transform 260ms var(--ease);
}

.mobile-menu-panel nav {
  display: grid;
  gap: 3px;
}

.mobile-menu-panel a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 14px;
  border-radius: 12px;
  color: #111;
  font-size: 15px;
  font-weight: 640;
  letter-spacing: -.025em;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.mobile-menu-panel .menu-arrow {
  opacity: .34;
  transform: translate(-3px,3px);
}

.mobile-menu-panel a:active,
.mobile-menu-panel a.is-selected,
.mobile-menu-panel a[aria-current="page"] {
  color: #fff;
  background: #0a0a0a;
}

.hamburger-button {
  position: relative;
  width: 48px;
  height: 48px;
  color: #fff;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.hamburger-line {
  position: absolute;
  left: 50%;
  width: 28px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transform: translateX(-50%);
  box-shadow: 0 1px 5px rgba(0,0,0,.48);
  transition:
    top 270ms var(--ease),
    transform 270ms var(--ease),
    opacity 160ms ease;
}

.hamburger-line:nth-child(1) { top: 15px; }
.hamburger-line:nth-child(2) { top: 23px; }
.hamburger-line:nth-child(3) { top: 31px; }

.mobile-nav.is-open .mobile-menu-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.mobile-nav.is-open .hamburger-line:nth-child(1) {
  top: 23px;
  transform: translateX(-50%) rotate(45deg);
}

.mobile-nav.is-open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-nav.is-open .hamburger-line:nth-child(3) {
  top: 23px;
  transform: translateX(-50%) rotate(-45deg);
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 820px) {
  .desktop-menu-wrap { display: none; }
  .mobile-nav { display: block; }

  .portfolio-pages {
    gap: 8px;
    padding:
      max(8px, env(safe-area-inset-top))
      max(8px, env(safe-area-inset-right))
      max(94px, calc(76px + env(safe-area-inset-bottom)))
      max(8px, env(safe-area-inset-left));
  }

  /*
    Mobilde dikey sayfalar ekranın tamamını kaplamasın.
    Yatay sayfalar ise okunabilirlik için genişliği kullansın.
  */
  .portfolio-page.portrait {
    width: min(calc(100% - 22px), 520px);
  }

  .portfolio-page.landscape {
    width: 100%;
  }

  .portfolio-page {
    border: 0;
    border-radius: 9px;
    box-shadow: none;
  }

  /*
    iOS Safari native PDF iframe'lerini kendi minimum viewport'u ile çizdiği için
    sağda beyaz viewer alanı oluşabiliyor. Mobilde native PDF viewer tamamen
    devreden çıkarılır; aynı PDF sayfalarının AVIF önizlemeleri kartı birebir doldurur.
  */
  .pdf-frame {
    display: none;
  }

  .portfolio-image {
    display: block;
  }

  .portfolio-status {
    top: calc(16px + env(safe-area-inset-top));
    left: calc(16px + env(safe-area-inset-left));
    min-height: 30px;
    padding-inline: 10px;
    font-size: 9px;
  }
}

@media (max-width: 390px) {
  .portfolio-page.portrait {
    width: min(calc(100% - 16px), 430px);
  }

  .portfolio-pages {
    padding-inline:
      max(6px, env(safe-area-inset-left))
      max(6px, env(safe-area-inset-right));
  }

  .mobile-nav {
    right: calc(16px + env(safe-area-inset-right));
    bottom: calc(16px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 820px) and (orientation: landscape) and (min-width: 620px) {
  .portfolio-pages {
    padding-right:
      max(74px, calc(60px + env(safe-area-inset-right)));
  }

  .portfolio-page.portrait {
    width: min(58vw, 440px);
  }

  .portfolio-page.landscape {
    width: min(100%, 1080px);
  }
}

/* =========================================================
   ANIMATION
   ========================================================= */

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  to { background-position-x: -200%; }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-status,
  .desktop-menu-wrap {
    animation-play-state: running !important;
  }
}

:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 4px;
}

.desktop-menu :focus-visible,
.mobile-menu-panel :focus-visible {
  outline-color: #111;
}