/* ==========================================================================
   SESSİZ MİSAFİR · V4 — TASARIM SİSTEMİ ("İPEK ODA")
   Dosya : src/assets/css/v4.css
   Sahip : W1
   Sözleşme: V4_MIMARI.md §0 (yön/token/tipografi/ölçü/doku/iOS),
             §2 (class contract), §7 (kabul kriterleri), §8 (erişilebilirlik)
   Not   : Font link'i HTML'de <link> ile gelir; burada @import YOK.
   ========================================================================== */

/* ==========================================================================
   1. TOKENLAR (§0.1 — renkler birebir; türetilmişler --v4- önekiyle)
   ========================================================================== */
:root {
  /* — §0.1 renk token'ları (KESİN) — */
  --ipk-zemin:      #F7F2EF;                /* sayfa zemini — sıcak fildişi */
  --ipk-yuzey:      #FDFAF8;                /* kart yüzeyi */
  --ipk-yuzey-2:    #FBF6F3;                /* ikincil yüzey */
  --ipk-mist:       #EFE7E6;                /* sis — bölüm zeminleri */
  --ipk-gul:        #E9D5D8;                /* solgun gül */
  --ipk-saten:      #DCE5E2;                /* saten yeşil */
  --ipk-mavi:       #DEE7F0;                /* pudra mavi */
  --ipk-altin:      #EBDFC3;                /* solgun altın */
  --ipk-ada:        #E4E9DC;                /* adaçayı */
  --ipk-murekkep:   #4B4043;                /* ana metin — sıcak mürekkep */
  --ipk-murekkep-2: #7B6B6F;                /* ikincil metin */
  --ipk-murekkep-3: #A99A9D;                /* soluk metin / ayraç */
  --ipk-vurgu:      #B9877F;                /* CTA — solgun terrakota */
  --ipk-vurgu-koyu: #9A6B64;                /* CTA hover/active */
  --ipk-cizgi:      rgba(75, 64, 67, .13);  /* saç teli ayraç */

  /* — türetilmiş: tipografi — */
  --v4-yazi: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --v4-govde: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* — türetilmiş: ölçü — */
  --v4-maks: 1120px;
  --v4-kenar: clamp(20px, 5vw, 56px);
  --v4-r-kart: 22px;
  --v4-r-btn: 999px;
  --v4-r-ic: 14px;
  --v4-r-kucuk: 10px;

  /* — türetilmiş: gölge / kenar (ipek kıvrımı) — */
  --v4-golge: 0 18px 48px -28px rgba(75, 64, 67, .30);
  --v4-golge-kucuk: 0 10px 28px -18px rgba(75, 64, 67, .26);
  --v4-golge-derin: 0 26px 60px -30px rgba(75, 64, 67, .34);
  --v4-ipk: inset 0 1px 0 rgba(255, 255, 255, .60);
  --v4-kenar-acik: 1px solid rgba(255, 255, 255, .55);

  /* — türetilmiş: durum renkleri (yalnız metin + ikon birlikte kullanılır) — */
  --v4-hata: #A8574F;
  --v4-uyari: #7E6330;
  --v4-ok: #4F6E58;

  /* — türetilmiş: z-index ölçeği — */
  --v4-z-icerik: 1;
  --v4-z-ray: 40;
  --v4-z-cubuk: 100;
  --v4-z-perde: 900;
  --v4-z-modal: 910;
  --v4-z-toast: 950;
}

/* ==========================================================================
   2. TEMEL / SIFIRLAMA
   ========================================================================== */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  background-color: var(--ipk-zemin);
  color: var(--ipk-murekkep);
  font-family: var(--v4-govde);
  font-size: 1rem;
  line-height: 1.72;
  font-weight: 400;
  overflow-x: hidden;
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--v4-yazi);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.08;
  color: var(--ipk-murekkep);
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }

a {
  color: inherit;
  text-decoration-color: var(--ipk-cizgi);
  text-underline-offset: 3px;
  transition: color .25s ease, text-decoration-color .25s ease;
}

img, svg, video, canvas {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
  margin: 0;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

hr {
  border: 0;
  border-top: 1px solid var(--ipk-cizgi);
  margin: 0;
}

::selection {
  background: var(--ipk-gul);
  color: var(--ipk-murekkep);
}

/* Odak halkası — her yerde görünür */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--ipk-vurgu);
  outline-offset: 3px;
  border-radius: 4px;
}

/* iOS: 16px üstü olmazsa sayfa otomatik yakınlaştırılır */
input,
textarea,
select { font-size: 16px; }

/* ==========================================================================
   3. SAYFA KABUĞU — "İPEK ODA" (§0.4 doku)
   ========================================================================== */
.v4-shell {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  min-height: 100dvh;
  /* Rakam biçimi: lining figures (§0.2 tabular rakam).
     Cormorant Garamond'un VARSAYILAN rakamları ESKİ TİPTİR (oldstyle):
     "1" bir I gibi, "2" kısa basılır — fiyat okunmaz. Lining figures
     yalnız `lnum` özelliğiyle açılır. Sıra önemli: "lnum", "tnum"den ÖNCE
     gelmelidir; aksi halde tnum eski tip tabular'e (`*.tosf`) eşler ve
     lnum uygulanmaz. */
  font-variant-numeric: lining-nums tabular-nums;
  font-feature-settings: "lnum" 1, "tnum" 1;
  background-color: var(--ipk-zemin);
  background-image:
    radial-gradient(118% 74% at 10% -10%, rgba(233, 213, 216, .78) 0%, rgba(233, 213, 216, 0) 56%),
    radial-gradient(92% 66% at 92% 2%, rgba(220, 229, 226, .74) 0%, rgba(220, 229, 226, 0) 58%),
    radial-gradient(86% 60% at 46% 8%, rgba(222, 231, 240, .60) 0%, rgba(222, 231, 240, 0) 60%),
    radial-gradient(120% 60% at 50% 104%, rgba(228, 233, 220, .55) 0%, rgba(228, 233, 220, 0) 62%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  overflow-x: clip;
}

/* ipek dokusu: feTurbulence gürültü — opacity .035, multiply
   z-index:-1 → kabuğun zemininin üstü, içeriğin altında (fixed barları bozmaz) */
.v4-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .035;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260' viewBox='0 0 260 260'%3E%3Cfilter id='ipk'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='260' height='260' filter='url(%23ipk)'/%3E%3C/svg%3E");
  background-size: 260px 260px;
}

/* Not: içerik kabuğun zemininden (gürültü katmanı) doğal olarak üstte çizilir;
   fixed barların konumu bozulmasın diye kabuk çocuklarına genel position
   kuralı UYGULANMAZ. */

/* ==========================================================================
   4. YERLEŞİM (§2.1)
   ========================================================================== */
.v4-wrap {
  width: 100%;
  max-width: var(--v4-maks);
  margin-inline: auto;
  padding-inline: var(--v4-kenar);
}

.v4-section {
  padding-block: clamp(72px, 11vh, 132px);
  position: relative;
}

.v4-section--mist {
  background-color: var(--ipk-mist);
  background-image:
    radial-gradient(80% 60% at 12% 0%, rgba(233, 213, 216, .45) 0%, rgba(233, 213, 216, 0) 60%),
    radial-gradient(70% 60% at 90% 100%, rgba(222, 231, 240, .40) 0%, rgba(222, 231, 240, 0) 60%);
}

.v4-section--tight { padding-block: clamp(48px, 7vh, 84px); }

.v4-section--yuzey { background-color: var(--ipk-yuzey-2); }

.v4-rule {
  height: 1px;
  border: 0;
  background-color: var(--ipk-cizgi);
  margin: 0;
}

.v4-rule--soft { background-color: rgba(75, 64, 67, .08); }

.v4-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--v4-govde);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ipk-murekkep-2);
  margin: 0 0 18px;
}

.v4-eyebrow__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 24px;
  padding-inline: 8px;
  border-radius: var(--v4-r-kucuk);
  background-color: var(--ipk-gul);
  color: var(--ipk-murekkep);
  font-variant-numeric: lining-nums tabular-nums;
  letter-spacing: .08em;
  flex: none;
}

.v4-eyebrow--center { justify-content: center; }

.v4-anchor-offset { scroll-margin-top: 120px; }

/* — başlıklar — */
.v4-h1 {
  font-size: clamp(2.7rem, 6.4vw, 4.6rem);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.012em;
  margin: 0 0 24px;
}

.v4-h2 {
  font-size: clamp(2rem, 3.8vw, 3.1rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
}

.v4-h3 {
  font-size: clamp(1.35rem, 2.1vw, 1.8rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.005em;
  margin: 0 0 14px;
}

.v4-h4 {
  font-family: var(--v4-govde);
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0;
  margin: 0 0 10px;
}

.v4-lede {
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  line-height: 1.72;
  color: var(--ipk-murekkep-2);
  max-width: 62ch;
  margin: 0 0 28px;
}

.v4-body {
  font-size: 1rem;
  line-height: 1.72;
  max-width: 68ch;
  color: var(--ipk-murekkep);
}

.v4-body + .v4-body { margin-top: 1.05em; }

.v4-muted {
  color: var(--ipk-murekkep-2);
  line-height: 1.72;
}

.v4-faint {
  color: var(--ipk-murekkep-3);
  font-size: .875rem;
  line-height: 1.6;
}

.v4-small { font-size: .9375rem; line-height: 1.7; }

.v4-num {
  font-variant-numeric: lining-nums tabular-nums;
  font-feature-settings: "lnum" 1, "tnum" 1;
}

/* — rakam taşıyan öğeler: lining figures —
   Fiyat, başlık, bölüm numarası, tablo, oturum saati ve oynatıcı süresi
   rakamı serif (Cormorant) ile basılır; serifin varsayılan rakamları eski
   tiptir. Bu öğelerde lining + tabular birlikte açılır.
   (`.v4-player__sure` sınıfı yoktur; oynatıcıdaki süre `.v4-player__meta`
   ve `.v4-player__dur` üzerindedir.) */
.v4-price,
.v4-h1,
.v4-h2,
.v4-h3,
.v4-eyebrow,
.v4-eyebrow__no,
.v4-chapter__no,
.v4-chapter__levha,
.v4-table,
.v4-table th,
.v4-table td,
.v4-table__num,
.v4-session__gun,
.v4-session__saat,
.v4-player__meta,
.v4-player__dur,
.v4-levha__cap {
  font-variant-numeric: lining-nums tabular-nums;
  font-feature-settings: "lnum" 1, "tnum" 1;
}

/* — ızgara — */
.v4-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 2.6vw, 34px);
  align-items: start;
}

.v4-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.v4-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.v4-grid--tight { gap: clamp(14px, 1.8vw, 22px); }

.v4-grid > *,
.v4-split > *,
.v4-stack > * { min-width: 0; }

.v4-stack {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2vw, 26px);
}

.v4-stack--tight { gap: 12px; }
.v4-stack--loose { gap: clamp(28px, 3.4vw, 44px); }

/* — ızgara + dikey yığın birlikte kullanıldığında ızgara korunur —
   `.v4-stack{display:flex}` ile `.v4-grid{display:grid}` aynı öğede
   çakışırsa (HTML'de `class="v4-grid v4-stack"`) yığın kazanır ve
   kolonlu ızgara tek kolona düşer. Aşağıdaki kural (özgülük 0,2,0)
   `.v4-stack`'i (0,1,0) yener; `.v4-stack`'in dikey `gap` ritmi korunur. — */
.v4-grid.v4-stack { display: grid; }

.v4-grid--2.v4-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.v4-grid--3.v4-stack { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.v4-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.v4-split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
}

.v4-split__text { order: 1; min-width: 0; }
.v4-split__media { order: 2; min-width: 0; }

/* ==========================================================================
   5. BİLEŞENLER (§2.2)
   ========================================================================== */

/* — kart — */
.v4-card {
  position: relative;
  background-color: var(--ipk-yuzey);
  border: var(--v4-kenar-acik);
  border-radius: var(--v4-r-kart);
  box-shadow: var(--v4-golge), var(--v4-ipk);
  padding: clamp(22px, 2.8vw, 34px);
  transition: transform .3s ease, box-shadow .3s ease;
}

/* Alt eylem satırı (`.v4-card__foot`) olan kartlar flex kolona geçer:
   eylemler kartın altına yapışır, ızgarada eşit yükseklikte alt hizalanır
   ("uzun dikey tablo" bütünlüğü — #paketler'deki üç "Sepete ekle").

   DİKKAT: flex yalnız eylem satırı olan kartlarda uygulanır. Tüm
   kartlarda uygulansaydı, flex kapsayıcıda kardeş margin'leri çarpışmazdı:
   uye.html'deki `.v4-field__error` (margin-top:8px) ile odeme.html'deki
   satır içi `margin-top` değerleri (1.5rem / 1rem / 1.25rem) blok
   düzenindeki çarpışma (= max) yerine toplan (= toplam) olarak ölçülür ve
   kartlar 8–72px şişerdi. Eylem satırı olmayan kartlar blok düzeninde
   kalır — ölçülen hiçbir değişiklik olmaz. */
.v4-card:has(.v4-card__foot) {
  display: flex;
  flex-direction: column;
  /* `.v4-grid` `align-items:start` kullandığı için eşit yükseklik burada
     açıkça istenir; aksi halde `margin-top:auto` boşluğu bulamaz. */
  align-self: stretch;
}

/* Bu kartların doğrudan çocuğu olan satır içi öğeler (rozet, düğme) flex
   item olarak esnerdi (tam genişlik) — eski dar genişliklerini korusunlar.
   `.v4-btn--block` zaten tam genişlik ister. */
.v4-card:has(.v4-card__foot) > .v4-badge,
.v4-card:has(.v4-card__foot) > .v4-btn:not(.v4-btn--block) { align-self: flex-start; }

.v4-card--tint {
  background-color: var(--tone, var(--ipk-mist));
  border-color: rgba(255, 255, 255, .48);
}

.v4-card--gul   { --tone: var(--ipk-gul); }
.v4-card--saten { --tone: var(--ipk-saten); }
.v4-card--mavi  { --tone: var(--ipk-mavi); }
.v4-card--altin { --tone: var(--ipk-altin); }
.v4-card--ada   { --tone: var(--ipk-ada); }

.v4-card--press { cursor: pointer; }

.v4-card--flat { box-shadow: none; }

.v4-card--media { padding: 0; overflow: hidden; }

.v4-card__body { padding: clamp(20px, 2.4vw, 30px); }

.v4-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--ipk-mist);
}

.v4-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.v4-card__foot {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--ipk-cizgi);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

/* — iç içe yüzey — */
.v4-panel {
  background-color: var(--ipk-yuzey-2);
  border: 1px solid var(--ipk-cizgi);
  border-radius: var(--v4-r-ic);
  padding: clamp(18px, 2.2vw, 26px);
}

.v4-panel--glass {
  background-color: rgba(253, 250, 248, .72);
  -webkit-backdrop-filter: blur(14px) saturate(1.06);
  backdrop-filter: blur(14px) saturate(1.06);
  border-color: rgba(255, 255, 255, .55);
  box-shadow: var(--v4-golge-kucuk), var(--v4-ipk);
}

/* — butonlar — */
.v4-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 11px 26px;
  border-radius: var(--v4-r-btn);
  border: 1px solid transparent;
  background-color: var(--ipk-vurgu-koyu);
  background-color: color-mix(in srgb, var(--ipk-vurgu-koyu) 86%, #3A2E31);
  color: #FFFDFC;
  font-family: var(--v4-govde);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .25s ease, transform .2s ease, box-shadow .25s ease;
  box-shadow: 0 10px 26px -16px rgba(75, 64, 67, .55);
}

.v4-btn[disabled],
.v4-btn[aria-disabled="true"] {
  opacity: .55;
  cursor: not-allowed;
  box-shadow: none;
}

.v4-btn--ghost {
  background-color: transparent;
  color: var(--ipk-murekkep);
  border-color: rgba(75, 64, 67, .30);
  box-shadow: none;
}

.v4-btn--soft {
  background-color: var(--ipk-gul);
  color: var(--ipk-murekkep);
  border-color: rgba(255, 255, 255, .55);
  box-shadow: var(--v4-golge-kucuk), var(--v4-ipk);
}

.v4-btn--ada {
  background-color: var(--ipk-ada);
  color: var(--ipk-murekkep);
  border-color: rgba(255, 255, 255, .55);
  box-shadow: var(--v4-golge-kucuk), var(--v4-ipk);
}

.v4-btn--sm {
  min-height: 44px;
  padding: 8px 18px;
  font-size: .9375rem;
}

.v4-btn--block { display: flex; width: 100%; }

.v4-btn--icon {
  width: 44px;
  min-width: 44px;
  padding: 0;
  border-radius: 50%;
}

/* — etiketler — */
.v4-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--v4-r-kucuk);
  background-color: var(--ipk-mist);
  border: 1px solid var(--ipk-cizgi);
  color: var(--ipk-murekkep-2);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.v4-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--v4-r-btn);
  background-color: rgba(253, 250, 248, .8);
  border: 1px solid var(--ipk-cizgi);
  color: var(--ipk-murekkep-2);
  font-size: 13px;
  line-height: 1.5;
}

.v4-price {
  font-family: var(--v4-yazi);
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  font-weight: 500;
  line-height: 1.1;
  font-variant-numeric: lining-nums tabular-nums;
  color: var(--ipk-murekkep);
}

/* — uyarı kutusu — */
.v4-note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 18px;
  border: 1px solid var(--ipk-cizgi);
  border-left: 3px solid var(--ipk-vurgu);
  border-radius: var(--v4-r-ic);
  background-color: rgba(253, 250, 248, .72);
  color: var(--ipk-murekkep-2);
  font-size: .9375rem;
  line-height: 1.7;
}

.v4-note__icon { flex: none; color: var(--ipk-vurgu); }

/* — ayraçlı dikey liste — */
.v4-rule-list > li {
  padding-block: 16px;
  border-bottom: 1px solid var(--ipk-cizgi);
  line-height: 1.72;
}

.v4-rule-list > li:first-child { padding-top: 0; }
.v4-rule-list > li:last-child { border-bottom: 0; padding-bottom: 0; }

/* — görsel + alt yazı — */
.v4-figure { margin: 0; }

.v4-figure img,
.v4-figure video {
  width: 100%;
  border-radius: var(--v4-r-kart);
  border: var(--v4-kenar-acik);
  box-shadow: var(--v4-golge), var(--v4-ipk);
}

.v4-figure figcaption {
  margin-top: 12px;
  font-size: .875rem;
  line-height: 1.6;
  color: var(--ipk-murekkep-2);
}

/* — alıntı — */
.v4-quote {
  margin: 0;
  padding: 4px 0 4px 26px;
  border-left: 2px solid var(--ipk-vurgu);
  font-family: var(--v4-yazi);
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  font-style: italic;
  line-height: 1.6;
  color: var(--ipk-murekkep);
}

.v4-quote cite {
  display: block;
  margin-top: 12px;
  font-family: var(--v4-govde);
  font-size: .8125rem;
  font-style: normal;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ipk-murekkep-2);
}

/* — tablo — */
.v4-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9375rem;
  line-height: 1.6;
  font-variant-numeric: lining-nums tabular-nums;
}

.v4-table caption {
  text-align: left;
  font-size: .875rem;
  color: var(--ipk-murekkep-2);
  padding-bottom: 10px;
}

.v4-table th,
.v4-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--ipk-cizgi);
  vertical-align: top;
}

.v4-table thead th {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ipk-murekkep-2);
  border-bottom-color: rgba(75, 64, 67, .22);
  white-space: nowrap;
}

.v4-table tbody tr:last-child td { border-bottom: 0; }

.v4-table__num { font-variant-numeric: lining-nums tabular-nums; white-space: nowrap; }

.v4-table-wrap {
  background-color: var(--ipk-yuzey);
  border: var(--v4-kenar-acik);
  border-radius: var(--v4-r-kart);
  box-shadow: var(--v4-golge), var(--v4-ipk);
  padding: clamp(10px, 1.6vw, 20px);
  overflow: hidden;
}

/* — akordeon — */
.v4-accordion {
  border: 1px solid var(--ipk-cizgi);
  border-radius: var(--v4-r-ic);
  background-color: var(--ipk-yuzey);
  box-shadow: var(--v4-golge-kucuk);
  overflow: hidden;
}

.v4-accordion + .v4-accordion { margin-top: 12px; }

.v4-accordion summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 56px;
  padding: 16px 58px 16px 22px;
  cursor: pointer;
  list-style: none;
  font-family: var(--v4-yazi);
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: 1.4;
  color: var(--ipk-murekkep);
  border-radius: var(--v4-r-ic);
}

.v4-accordion summary::-webkit-details-marker { display: none; }
.v4-accordion summary::marker { content: ""; }
.v4-accordion summary::-moz-details-marker { display: none; }

.v4-accordion summary::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 50%;
  width: 11px;
  height: 11px;
  margin-top: -7px;
  border-right: 1.5px solid var(--ipk-murekkep-2);
  border-bottom: 1.5px solid var(--ipk-murekkep-2);
  transform: rotate(45deg);
  transition: transform .3s ease;
}

.v4-accordion[open] summary::after {
  transform: rotate(-135deg);
  margin-top: -3px;
}

.v4-accordion__body {
  padding: 2px 22px 22px;
  border-top: 1px solid var(--ipk-cizgi);
  padding-top: 18px;
  line-height: 1.72;
  color: var(--ipk-murekkep-2);
  max-width: 68ch;
}

/* — form — */
.v4-field { margin: 0 0 18px; }

.v4-label {
  display: block;
  margin-bottom: 8px;
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--ipk-murekkep);
}

.v4-label__opt {
  font-weight: 400;
  color: var(--ipk-murekkep-3);
  letter-spacing: 0;
}

.v4-input,
.v4-textarea {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  border: 1px solid var(--ipk-cizgi);
  border-radius: var(--v4-r-ic);
  background-color: var(--ipk-yuzey);
  color: var(--ipk-murekkep);
  font-size: 16px;
  line-height: 1.6;
  transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
  -webkit-appearance: none;
  appearance: none;
}

.v4-textarea {
  min-height: 132px;
  resize: vertical;
  line-height: 1.72;
}

.v4-input::placeholder,
.v4-textarea::placeholder { color: var(--ipk-murekkep-3); opacity: 1; }

.v4-input:focus,
.v4-textarea:focus {
  outline: none;
  border-color: var(--ipk-vurgu);
  box-shadow: 0 0 0 4px rgba(185, 135, 127, .22);
}

.v4-field--error .v4-input,
.v4-field--error .v4-textarea {
  border-color: var(--v4-hata);
  border-width: 1px;
  box-shadow: 0 0 0 4px rgba(168, 87, 79, .14);
}

.v4-field__error {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 8px;
  font-size: .875rem;
  line-height: 1.55;
  color: var(--v4-hata);
}

.v4-field__error::before {
  content: "⚠";
  flex: none;
  font-size: .9375rem;
  line-height: 1.5;
}

.v4-field__hint {
  margin-top: 8px;
  font-size: .875rem;
  line-height: 1.55;
  color: var(--ipk-murekkep-2);
}

.v4-field--inline {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.v4-checkbox,
.v4-radio {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  border: 1px solid rgba(75, 64, 67, .40);
  border-radius: 6px;
  background-color: var(--ipk-yuzey);
  cursor: pointer;
  transition: border-color .2s ease, background-color .2s ease;
}

.v4-radio { border-radius: 50%; }

.v4-checkbox:checked,
.v4-radio:checked {
  border-color: var(--ipk-vurgu);
  background-color: var(--ipk-vurgu);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 12.5l4.2 4.2L19 7' fill='none' stroke='%23FDFAF8' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 15px 15px;
  background-position: center;
  background-repeat: no-repeat;
}

.v4-radio:checked {
  background-image: none;
  box-shadow: inset 0 0 0 4px var(--ipk-yuzey);
}

.v4-checkbox:focus-visible,
.v4-radio:focus-visible {
  outline: 2px solid var(--ipk-vurgu);
  outline-offset: 2px;
}

.v4-check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--ipk-murekkep-2);
  cursor: pointer;
}

/* — bildirim (toast) — */
.v4-toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  z-index: var(--v4-z-toast);
  max-width: min(420px, calc(100vw - 40px));
  padding: 14px 20px;
  border-radius: var(--v4-r-ic);
  background-color: rgba(253, 250, 248, .92);
  -webkit-backdrop-filter: blur(14px) saturate(1.06);
  backdrop-filter: blur(14px) saturate(1.06);
  border: 1px solid rgba(255, 255, 255, .55);
  box-shadow: var(--v4-golge-derin), var(--v4-ipk);
  color: var(--ipk-murekkep);
  font-size: .9375rem;
  line-height: 1.6;
  text-align: center;
  opacity: 0;
  transform: translate(-50%, 16px);
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
}

.v4-toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

.v4-toast--error { border-color: rgba(168, 87, 79, .45); }
.v4-toast--error .v4-toast__msg { color: var(--v4-hata); }

/* — toast bölgesi —
   v4.js `toastBolgesi()` bu bölgeyi `[data-toast-region]` ile bulur, yoksa
   `<body>`'ye kendisi ekler. Bölge yalnız taşıyıcıdır: `pointer-events:none`
   ile sayfayı engellemez; görünür bildirimler kendi tıklamasını alır.
   `.v4-toast` kuralları (W1) DEĞİŞTİRİLMEDİ. — */
.v4-toast-region {
  position: fixed;
  inset-inline: 0;
  bottom: calc(24px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  z-index: 120;
}

/* Bildirimler tıklanabilir olmalı (bölge pointer-events:none taşır) —
   görünmeyen (henüz .is-on olmayan) bildirim tıklamayı yakalamasın. */
.v4-toast-region .v4-toast { pointer-events: auto; }
.v4-toast-region .v4-toast:not(.is-on) { pointer-events: none; }

/* — modal — */
.v4-modal {
  position: fixed;
  inset: 0;
  z-index: var(--v4-z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 4vw, 40px);
  padding-top: calc(clamp(16px, 4vw, 40px) + env(safe-area-inset-top));
  padding-bottom: calc(clamp(16px, 4vw, 40px) + env(safe-area-inset-bottom));
  background-color: rgba(75, 64, 67, .34);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  overflow-y: auto;
  overscroll-behavior-y: contain;
}

.v4-modal.is-open,
.v4-modal[open] { display: flex; }

.v4-modal__box {
  position: relative;
  width: min(560px, 100%);
  max-height: calc(100vh - 2 * clamp(16px, 4vw, 40px));
  max-height: calc(100dvh - 2 * clamp(16px, 4vw, 40px));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
  padding: clamp(24px, 3.4vw, 38px);
  border-radius: var(--v4-r-kart);
  background-color: var(--ipk-yuzey);
  border: var(--v4-kenar-acik);
  box-shadow: var(--v4-golge-derin), var(--v4-ipk);
  animation: v4-modal-gir .3s ease both;
}

.v4-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--ipk-murekkep-2);
  font-size: 1.375rem;
  line-height: 1;
}

.v4-modal__title { margin: 0 40px 12px 0; font-size: clamp(1.35rem, 2.4vw, 1.7rem); }

.v4-modal__body { line-height: 1.72; color: var(--ipk-murekkep-2); max-width: 68ch; }
.v4-modal__foot { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 12px; }

/* Scroll kilidi */
body.v4-scroll-lock,
body:has(.v4-modal.is-open),
body:has(.v4-modal[open]) { overflow: hidden; }

/* — meditasyon oynatıcı — */
.v4-player {
  position: relative;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: clamp(16px, 2.2vw, 24px);
  align-items: center;
  padding: clamp(18px, 2.4vw, 26px);
  border-radius: var(--v4-r-kart);
  background-color: var(--ipk-yuzey);
  border: var(--v4-kenar-acik);
  box-shadow: var(--v4-golge), var(--v4-ipk);
  overflow: hidden;
}

.v4-player__cover {
  width: 96px;
  height: 96px;
  border-radius: var(--v4-r-ic);
  overflow: hidden;
  background-color: var(--ipk-mist);
  flex: none;
}

.v4-player__cover img { width: 100%; height: 100%; object-fit: cover; }

.v4-player__body { min-width: 0; }

.v4-player__title {
  margin: 0 0 4px;
  font-family: var(--v4-yazi);
  font-size: clamp(1.15rem, 1.9vw, 1.4rem);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.005em;
}

.v4-player__meta {
  margin: 0 0 12px;
  font-size: .8125rem;
  color: var(--ipk-murekkep-2);
  font-variant-numeric: lining-nums tabular-nums;
}

.v4-player__controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.v4-player__btn {
  flex: none;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--ipk-vurgu-koyu);
  background-color: color-mix(in srgb, var(--ipk-vurgu-koyu) 86%, #3A2E31);
  color: #FFFDFC;
  font-size: 1.05rem;
  line-height: 1;
  transition: transform .2s ease, background-color .25s ease;
}

.v4-player__time {
  font-size: .8125rem;
  font-variant-numeric: lining-nums tabular-nums;
  color: var(--ipk-murekkep-2);
  min-width: 44px;
  text-align: center;
}

.v4-player__range {
  flex: 1 1 160px;
  min-width: 120px;
  height: 22px;
  margin: 0;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.v4-player__range::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: var(--v4-r-btn);
  background-color: rgba(75, 64, 67, .18);
}

.v4-player__range::-moz-range-track {
  height: 4px;
  border-radius: var(--v4-r-btn);
  background-color: rgba(75, 64, 67, .18);
}

.v4-player__range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -6px;
  border-radius: 50%;
  background-color: var(--ipk-vurgu-koyu);
  border: 2px solid var(--ipk-yuzey);
  box-shadow: 0 2px 8px -2px rgba(75, 64, 67, .5);
}

.v4-player__range::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--ipk-vurgu-koyu);
  border: 2px solid var(--ipk-yuzey);
}

.v4-player__bar {
  grid-column: 1 / -1;
  height: 3px;
  border-radius: var(--v4-r-btn);
  background-color: rgba(75, 64, 67, .12);
  overflow: hidden;
}

.v4-player__fill {
  height: 100%;
  width: 0%;
  border-radius: var(--v4-r-btn);
  background: linear-gradient(90deg, var(--ipk-gul), var(--ipk-vurgu));
  transition: width .25s linear;
}

.v4-player__chapters {
  grid-column: 1 / -1;
  margin-top: 4px;
  border-top: 1px solid var(--ipk-cizgi);
}

.v4-player__chapters li { border-bottom: 1px solid var(--ipk-cizgi); }
.v4-player__chapters li:last-child { border-bottom: 0; }

.v4-player__chapter {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-height: 44px;
  padding: 10px 4px;
  text-align: left;
  color: var(--ipk-murekkep);
  font-size: .9375rem;
  line-height: 1.5;
}

.v4-player__chapter[aria-current="true"] { color: var(--ipk-vurgu-koyu); font-weight: 600; }

.v4-player__no {
  flex: none;
  min-width: 26px;
  font-variant-numeric: lining-nums tabular-nums;
  font-size: .8125rem;
  color: var(--ipk-murekkep-3);
}

.v4-player__dur {
  margin-left: auto;
  flex: none;
  font-variant-numeric: lining-nums tabular-nums;
  font-size: .8125rem;
  color: var(--ipk-murekkep-2);
}

/* — yaş defteri mektubu — */
.v4-letter {
  position: relative;
  padding: clamp(24px, 3vw, 36px);
  border-radius: var(--v4-r-kart);
  background-color: var(--ipk-yuzey);
  border: var(--v4-kenar-acik);
  box-shadow: var(--v4-golge), var(--v4-ipk);
  overflow: hidden;
}

.v4-letter::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .028;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Cfilter id='k'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23k)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

.v4-letter__meta {
  position: relative;
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ipk-murekkep-2);
}

.v4-letter__text {
  position: relative;
  margin: 0;
  line-height: 1.72;
  max-width: 68ch;
  color: var(--ipk-murekkep);
  font-family: var(--v4-yazi);
  font-size: clamp(1.0625rem, 1.5vw, 1.2rem);
}

.v4-letter__sign {
  position: relative;
  margin: 18px 0 0;
  font-size: .875rem;
  color: var(--ipk-murekkep-2);
}

.v4-letter--anon {
  background-color: var(--ipk-yuzey-2);
}

.v4-letter--anon .v4-letter__meta { color: var(--ipk-murekkep-3); }

/* — arka plan ses düğmesi — */
.v4-sound {
  position: fixed;
  right: clamp(14px, 3vw, 30px);
  bottom: calc(clamp(14px, 3vw, 30px) + env(safe-area-inset-bottom));
  z-index: var(--v4-z-cubuk);
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: rgba(253, 250, 248, .84);
  -webkit-backdrop-filter: blur(14px) saturate(1.06);
  backdrop-filter: blur(14px) saturate(1.06);
  border: 1px solid rgba(255, 255, 255, .6);
  box-shadow: var(--v4-golge), var(--v4-ipk);
  color: var(--ipk-murekkep);
  font-size: 1.05rem;
  line-height: 1;
  transition: transform .25s ease, box-shadow .25s ease;
}

.v4-sound[aria-pressed="true"] { color: var(--ipk-vurgu-koyu); }

/* — adım kartı — */
.v4-step {
  position: relative;
  padding: clamp(22px, 2.8vw, 32px);
  border-radius: var(--v4-r-kart);
  background-color: var(--ipk-yuzey);
  border: var(--v4-kenar-acik);
  box-shadow: var(--v4-golge), var(--v4-ipk);
}

.v4-step__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 16px;
  border-radius: 50%;
  background-color: var(--ipk-saten);
  color: var(--ipk-murekkep);
  font-family: var(--v4-yazi);
  font-size: 1.15rem;
  font-variant-numeric: lining-nums tabular-nums;
  line-height: 1;
}

/* — levha çerçevesi — */
.v4-levha {
  position: relative;
  padding: clamp(10px, 1.4vw, 16px);
  border-radius: var(--v4-r-kart);
  background-color: var(--ipk-yuzey-2);
  border: 1px solid var(--ipk-cizgi);
  box-shadow: var(--v4-golge), var(--v4-ipk);
}

.v4-levha img {
  width: 100%;
  border-radius: var(--v4-r-ic);
  border: 1px solid rgba(255, 255, 255, .5);
}

.v4-levha__cap {
  margin-top: 12px;
  font-size: .8125rem;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--ipk-murekkep-2);
  text-align: center;
}

/* — kitap bölüm satırı — */
.v4-chapter {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-block: 14px;
  border-bottom: 1px solid var(--ipk-cizgi);
  line-height: 1.6;
}

.v4-chapter:last-child { border-bottom: 0; }

.v4-chapter__no {
  flex: none;
  min-width: 42px;
  font-family: var(--v4-yazi);
  font-size: .9375rem;
  font-variant-numeric: lining-nums tabular-nums;
  color: var(--ipk-murekkep-3);
}

.v4-chapter__title { flex: 1; min-width: 0; }

.v4-chapter__levha {
  flex: none;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ipk-murekkep-2);
  border: 1px solid var(--ipk-cizgi);
  border-radius: var(--v4-r-kucuk);
  padding: 3px 8px;
}

/* — canlı oturum kartı — */
.v4-session {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: clamp(20px, 2.6vw, 28px);
  border-radius: var(--v4-r-kart);
  background-color: var(--ipk-yuzey);
  border: var(--v4-kenar-acik);
  box-shadow: var(--v4-golge), var(--v4-ipk);
}

.v4-session__gun {
  flex: none;
  min-width: 62px;
  padding: 10px 8px;
  border-radius: var(--v4-r-ic);
  background-color: var(--ipk-mavi);
  color: var(--ipk-murekkep);
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  line-height: 1.4;
}

.v4-session__saat {
  display: block;
  margin-top: 4px;
  font-family: var(--v4-yazi);
  font-size: 1.05rem;
  font-variant-numeric: lining-nums tabular-nums;
  letter-spacing: 0;
  text-transform: none;
}

.v4-session__body { min-width: 0; flex: 1; }

/* — boş durum — */
.v4-empty {
  padding: clamp(32px, 5vw, 60px) clamp(20px, 3vw, 40px);
  text-align: center;
  border: 1px dashed rgba(75, 64, 67, .22);
  border-radius: var(--v4-r-kart);
  background-color: rgba(253, 250, 248, .5);
  color: var(--ipk-murekkep-2);
  line-height: 1.72;
}

.v4-empty__title { margin: 0 0 10px; font-size: 1.25rem; }

/* — yükleniyor — */
.v4-loader {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ipk-murekkep-2);
  font-size: .9375rem;
  line-height: 1.6;
}

.v4-loader__spin {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(75, 64, 67, .18);
  border-top-color: var(--ipk-vurgu);
  animation: v4-don .9s linear infinite;
}

/* ==========================================================================
   6. SABİT ÇUBUKLAR (§2.3)
   ========================================================================== */

/* — üst bar (cam) — */
.v4-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--v4-z-cubuk);
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 64px;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  background-color: rgba(253, 250, 248, .78);
  -webkit-backdrop-filter: blur(14px) saturate(1.06);
  backdrop-filter: blur(14px) saturate(1.06);
  border-bottom: 1px solid var(--ipk-cizgi);
  transition: transform .32s ease, opacity .32s ease;
}

.v4-topbar--hidden {
  transform: translateY(-102%);
  opacity: 0;
}

.v4-topbar__inner {
  width: 100%;
  max-width: var(--v4-maks);
  margin-inline: auto;
  padding-inline: var(--v4-kenar);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.v4-topbar__brand {
  font-family: var(--v4-yazi);
  font-size: 1.125rem;
  letter-spacing: .02em;
  text-decoration: none;
  color: var(--ipk-murekkep);
  white-space: nowrap;
}

/* — üst barda marka yazısı (üst harf, geniş aralık) — */
.v4-topbar__marka {
  font-family: var(--v4-yazi);
  letter-spacing: .14em;
  font-size: 13px;
  color: var(--ipk-murekkep);
  white-space: nowrap;
}

/* — üst barda küçük ikon kabı (~20px) — */
.v4-topbar__ic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--ipk-murekkep-2);
}

.v4-topbar__nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.v4-topbar__nav::-webkit-scrollbar { display: none; }

.v4-topbar__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 4px;
  font-size: .875rem;
  color: var(--ipk-murekkep-2);
  text-decoration: none;
  white-space: nowrap;
}

.v4-topbar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

/* Üst bardaki buton metni asla iki satıra bölünmez ("Giriş" / "yap") —
   buton kutusu daralır, metin bölünmez.
   `width: auto` şart: ≤480px'te genel `.v4-btn { width: 100% }` kuralı
   butonu eylem kutusuna sığdırıp metni iki satıra bölüyordu. */
.v4-topbar .v4-btn { white-space: nowrap; width: auto; }

/* — masaüstü sol kenar dizini —
   15 madde × (34px + 8px) ≈ 630px; kısa pencerelerde (ör. 720px yükseklik)
   taşmasın diye yükseklik sınırlanır ve kendi içinde kaydırılır. */
.v4-rail {
  position: fixed;
  left: max(14px, calc(50vw - var(--v4-maks) / 2 - 110px));
  top: 50%;
  transform: translateY(-50%);
  z-index: var(--v4-z-ray);
  display: none;
  flex-direction: column;
  gap: 8px;
  max-height: calc(100dvh - 140px);
  overflow-y: auto;
  overscroll-behavior-y: contain;
  scrollbar-width: thin;
  padding: 16px 12px;
  border-radius: var(--v4-r-ic);
  background-color: rgba(253, 250, 248, .55);
  -webkit-backdrop-filter: blur(10px) saturate(1.05);
  backdrop-filter: blur(10px) saturate(1.05);
  border: 1px solid var(--ipk-cizgi);
}

.v4-rail::-webkit-scrollbar { width: 6px; }
.v4-rail::-webkit-scrollbar-thumb {
  border-radius: var(--v4-r-btn);
  background-color: rgba(75, 64, 67, .18);
}

.v4-rail--fixed { position: fixed; }

.v4-rail__item {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  padding-inline: 6px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ipk-murekkep-3);
  text-decoration: none;
  white-space: nowrap;
  transition: color .25s ease;
}

.v4-rail__dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background-color: rgba(75, 64, 67, .22);
  transition: background-color .25s ease, transform .25s ease;
}

.v4-rail__item.is-active { color: var(--ipk-murekkep); }
.v4-rail__item.is-active .v4-rail__dot { background-color: var(--ipk-vurgu); transform: scale(1.3); }

/* — mobil alt bar — */
.v4-dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--v4-z-cubuk);
  display: none;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  padding: 8px clamp(12px, 4vw, 20px);
  padding-bottom: calc(8px + env(safe-area-inset-bottom));
  background-color: rgba(253, 250, 248, .88);
  -webkit-backdrop-filter: blur(14px) saturate(1.06);
  backdrop-filter: blur(14px) saturate(1.06);
  border-top: 1px solid var(--ipk-cizgi);
}

.v4-dock__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: 48px;
  padding: 6px 4px;
  border-radius: var(--v4-r-ic);
  color: var(--ipk-murekkep-2);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
}

.v4-dock__icon {
  font-size: 1.05rem;
  line-height: 1.2;
}

/* ==========================================================================
   7. YARDIMCI / DİĞER
   ========================================================================== */
.v4-center { text-align: center; }
.v4-center .v4-lede { margin-inline: auto; }

.v4-hide { display: none !important; }

.v4-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* — "İçeriğe atla" bağlantısı —
   Klavyeyle gelen kullanıcı için: görünmez ama ekran okuyucudan gizli değil.
   `clip-path: inset(50%)` ile gizlenir (display:none değil) — odaklanınca
   görünür olur. */
.v4-skip-link {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.v4-skip-link:focus,
.v4-skip-link:focus-visible {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  width: auto;
  height: auto;
  margin: 0;
  padding: 10px 16px;
  overflow: visible;
  clip: auto;
  clip-path: none;
  border-radius: 999px;
  background: var(--ipk-yuzey);
  border: 1px solid var(--ipk-cizgi);
  box-shadow: 0 18px 48px -28px rgba(75, 64, 67, .30);
  color: var(--ipk-murekkep);
  font-family: var(--v4-govde);
  font-size: .875rem;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
}

.v4-link {
  color: var(--ipk-murekkep);
  text-decoration: underline;
  text-decoration-color: var(--ipk-vurgu);
  text-decoration-thickness: 1px;
}

.v4-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ipk-murekkep-3);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.v4-divider::before,
.v4-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background-color: var(--ipk-cizgi);
}

/* ==========================================================================
   8. ANİMASYON
   ========================================================================== */
@keyframes v4-don { to { transform: rotate(360deg); } }

@keyframes v4-modal-gir {
  from { opacity: 0; transform: translateY(12px) scale(.985); }
  to   { opacity: 1; transform: none; }
}

@keyframes v4-yumusak-gir {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

/* ==========================================================================
   9. HOVER — YALNIZ @media (hover: hover) İÇİNDE
   ========================================================================== */
@media (hover: hover) {
  a:hover { color: var(--ipk-vurgu-koyu); }

  .v4-btn:hover {
    background-color: var(--ipk-vurgu);
    background-color: color-mix(in srgb, var(--ipk-vurgu-koyu) 74%, #3A2E31);
    box-shadow: 0 14px 30px -16px rgba(75, 64, 67, .6);
  }

  .v4-btn--ghost:hover {
    background-color: rgba(253, 250, 248, .75);
    border-color: var(--ipk-vurgu);
    color: var(--ipk-murekkep);
  }

  .v4-btn--soft:hover { background-color: var(--ipk-gul); filter: saturate(1.06); }
  .v4-btn--ada:hover  { background-color: var(--ipk-ada); filter: saturate(1.06); }

  .v4-card--press:hover {
    transform: translateY(-3px);
    box-shadow: var(--v4-golge-derin), var(--v4-ipk);
  }

  .v4-player__btn:hover { background-color: var(--ipk-vurgu); }
  .v4-sound:hover { transform: translateY(-2px); }
  .v4-player__chapter:hover { color: var(--ipk-vurgu-koyu); }
  .v4-topbar__link:hover { color: var(--ipk-murekkep); }
  .v4-rail__item:hover { color: var(--ipk-murekkep); }
  .v4-dock__item:hover { color: var(--ipk-murekkep); }
  .v4-modal__close:hover { background-color: var(--ipk-mist); }
}

/* Dokunulabilir kartın basılma davranışı (hover'sız cihazlar) */
.v4-card--press:active { transform: scale(.985); }
.v4-btn:active { transform: scale(.985); }

/* ==========================================================================
   10. RESPONSIVE
   ========================================================================== */

/* — ≤1024px — */
@media (max-width: 1024px) {
  .v4-grid,
  .v4-grid--3,
  .v4-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  /* ızgara+yığın birleşimi — kırılımda aynı kolon sayısı (özgülük eşit, kaynak sırası sonra) */
  .v4-grid--2.v4-stack,
  .v4-grid--3.v4-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .v4-shell { background-attachment: scroll; }

  .v4-split { grid-template-columns: 1fr 1fr; gap: clamp(24px, 3.4vw, 40px); }
}

/* — ≤768px — */
@media (max-width: 768px) {
  .v4-section { padding-block: clamp(64px, 10vh, 104px); }

  .v4-split {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  /* mobilde görsel altta */
  .v4-split__text { order: 1; }
  .v4-split__media { order: 2; }

  .v4-player { grid-template-columns: 72px minmax(0, 1fr); }
  .v4-player__cover { width: 72px; height: 72px; }

  .v4-topbar__nav { display: none; }

  .v4-dock { display: grid; }

  /* Alt bar yüksekliği kadar nefes payı — YALNIZ alt barı olan sayfalarda.
     `.v4-dock` olmayan yardımcı sayfalarda boşluk bırakmaz. */
  body:has(.v4-dock) { padding-bottom: calc(76px + env(safe-area-inset-bottom)); }

  .v4-sound { bottom: calc(78px + env(safe-area-inset-bottom)); }

  .v4-rail { display: none !important; }
}

/* — ≤640px: tablo → kart — */
@media (max-width: 640px) {
  .v4-table-wrap { padding: 12px; border-radius: var(--v4-r-ic); }

  .v4-table,
  .v4-table thead,
  .v4-table tbody,
  .v4-table tr,
  .v4-table th,
  .v4-table td { display: block; }

  .v4-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }

  .v4-table tr {
    padding: 14px 0;
    border-bottom: 1px solid var(--ipk-cizgi);
  }

  .v4-table tr:last-child { border-bottom: 0; }

  .v4-table th,
  .v4-table td {
    border-bottom: 0;
    padding: 4px 0;
    text-align: left;
  }

  .v4-table td {
    display: grid;
    grid-template-columns: minmax(84px, 38%) minmax(0, 1fr);
    gap: 12px;
    align-items: baseline;
  }

  .v4-table td::before {
    content: attr(data-label);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--ipk-murekkep-2);
  }

  .v4-table td:not([data-label])::before { content: none; }
}

/* — ≤480px — */
@media (max-width: 480px) {
  .v4-grid,
  .v4-grid--3,
  .v4-grid--2 { grid-template-columns: minmax(0, 1fr); }

  /* ızgara+yığın birleşimi — kırılımda tek kolon */
  .v4-grid--2.v4-stack,
  .v4-grid--3.v4-stack { grid-template-columns: minmax(0, 1fr); }

  .v4-card { padding: 22px 20px; }

  .v4-player { grid-template-columns: minmax(0, 1fr); }
  .v4-player__cover { width: 84px; height: 84px; }

  .v4-player__controls { gap: 10px; }
  .v4-player__range { flex: 1 1 100%; }

  .v4-modal__box { padding: 22px 18px; }

  .v4-btn { width: 100%; }
  .v4-btn--block { width: 100%; }
  .v4-row .v4-btn { width: auto; }

  .v4-letter { padding: 22px 18px; }

  .v4-accordion summary { padding: 14px 50px 14px 18px; }
  .v4-accordion__body { padding: 16px 18px 20px; }

  /* — üst bar (390px): buton metni bölünmez, bar yüksekliği 44–48px —
     Marka METNİ kısaltılmaz, yalnız ölçeklenir. */
  .v4-topbar { min-height: 48px; }

  .v4-topbar__inner { gap: 10px; }

  .v4-topbar__brand,
  .v4-topbar__marka {
    font-size: 13px;
    letter-spacing: .08em;
  }

  .v4-topbar .v4-btn {
    padding-inline: 14px;
    font-size: 13px;
  }
}

/* — ≥1280px: sol kenar dizini görünür — */
@media (min-width: 1280px) {
  .v4-rail { display: flex; }
  .v4-dock { display: none; }
  body { padding-bottom: 0; }
  .v4-sound { bottom: clamp(14px, 3vw, 30px); }
}

/* ==========================================================================
   11. ERİŞİLEBİLİRLİK TERCİHLERİ
   ========================================================================== */

/* — azaltılmış hareket —
   §0.5: tüm geçişler ~0, otomatik kaydırma kapalı.
   Süre/delay sıfırlanır; sonraki karelerde oluşan geçişler de durur. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    transition-delay: 0s !important;
    scroll-behavior: auto !important;
  }

  .v4-card--press:hover,
  .v4-sound:hover,
  .v4-btn:active,
  .v4-card--press:active { transform: none; }

  .v4-modal__box { animation: none; }

  .v4-loader__spin { animation: none; }
}

/* — yüksek kontrast — */
@media (prefers-contrast: more) {
  :root {
    --ipk-cizgi: rgba(75, 64, 67, .38);
    --ipk-murekkep-3: #6E5F63;
    --v4-golge: 0 14px 34px -26px rgba(75, 64, 67, .55);
  }

  .v4-card,
  .v4-panel,
  .v4-input,
  .v4-textarea,
  .v4-table-wrap,
  .v4-accordion,
  .v4-letter,
  .v4-step,
  .v4-session,
  .v4-player { border-color: rgba(75, 64, 67, .34); }

  .v4-btn { border-color: rgba(75, 64, 67, .40); }

  .v4-btn--ghost { border-color: rgba(75, 64, 67, .55); }

  .v4-muted,
  .v4-lede { color: var(--ipk-murekkep); }

  .v4-eyebrow { color: var(--ipk-murekkep); }
}

/* — zorunlu renkler (Windows) — */
@media (forced-colors: active) {
  .v4-card,
  .v4-panel,
  .v4-btn,
  .v4-input,
  .v4-textarea,
  .v4-accordion,
  .v4-letter,
  .v4-player,
  .v4-modal__box { border: 1px solid CanvasText; }

  .v4-btn { background: ButtonFace; color: ButtonText; }
  .v4-shell::before { display: none; }
}