/* ==========================================================================
   FIBERKO — Ürün grupları vitrini (.fkg)
   Açık zemin üzerinde beyaz sahne kartı: solda grup bilgisi, sağda büyük
   ürün fotoğrafı + arkada kayan dev grup adı; altta ilerleme çubuklu sekmeler.
   Renkler yalnız tasarım değişkenlerinden gelir.
   ========================================================================== */

.fkg{
    --fkg-dur: 6500ms;               /* otomatik geçiş süresi (JS de okur) */
    position: relative;
    padding-block: clamp(64px, 7vw, 100px);
    background: var(--c-surface);
    overflow: hidden;
    isolation: isolate;
}

/* ---------- Başlık satırı ---------- */
.fkg__head{
    display: flex; align-items: flex-end; justify-content: space-between;
    gap: 24px 40px; flex-wrap: wrap;
    margin-bottom: clamp(24px, 2.8vw, 36px);
}
.fkg__head-text{ max-width: 680px; }
.fkg__eyebrow{
    display: inline-flex; align-items: center; gap: 12px;
    font-family: var(--f-head); font-size: .78rem; font-weight: 700;
    letter-spacing: .2em; text-transform: uppercase; color: var(--c-primary);
}
.fkg__eyebrow::before{ content: ""; width: 34px; height: 2px; background: currentColor; border-radius: 2px; }
.fkg__lead{
    margin: 14px 0 0;
    font-family: var(--f-head); font-weight: 500;
    font-size: clamp(1.2rem, 1.8vw, 1.6rem); line-height: 1.32; letter-spacing: -.015em;
    color: var(--c-muted);
}
.fkg__lead b{ color: var(--c-ink); font-weight: 700; }

.fkg__ctrl{ display: flex; align-items: center; gap: 10px; }
.fkg__count{
    display: inline-flex; align-items: center; gap: 10px; margin-inline-end: 10px;
    font-family: var(--f-head); font-weight: 600; font-size: .95rem; color: var(--c-muted);
    font-variant-numeric: tabular-nums;
}
.fkg__count b{ color: var(--c-ink); font-size: 1.35rem; font-weight: 800; }
.fkg__count i{ width: 28px; height: 1px; background: var(--c-line-2); }
.fkg__nav{
    width: 52px; height: 52px; border-radius: 50%;
    display: grid; place-items: center;
    border: 1px solid var(--c-line-2); background: #fff; color: var(--c-ink);
    cursor: pointer;
    transition: background-color .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.fkg__nav:hover, .fkg__nav:focus-visible{ background: var(--c-ink); border-color: var(--c-ink); color: #fff; }
.fkg__nav:active{ transform: scale(.94); }
.fkg__nav:focus-visible{ outline: 2px solid var(--c-primary); outline-offset: 3px; }

/* ---------- Sahne kartı ---------- */
.fkg__stage{
    position: relative;
    display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    min-height: clamp(480px, 40vw, 560px);
    background: #fff;
    border: 1px solid var(--c-line);
    border-radius: 32px;
    box-shadow: 0 40px 80px -40px rgba(11, 11, 13, .18);
    overflow: hidden;
}

/* Bilgi paneli: tüm paneller aynı hücrede üst üste, yükseklik en uzununa göre */
.fkg__info{
    display: grid;
    padding: clamp(28px, 3.4vw, 48px);
    padding-inline-end: clamp(20px, 2.4vw, 32px);
}
.fkg__panel{
    grid-area: 1 / 1;
    display: flex; flex-direction: column; justify-content: center;
    opacity: 0; visibility: hidden;
    transform: translateY(18px);
    transition: opacity .55s var(--ease), transform .55s var(--ease), visibility 0s linear .55s;
}
.fkg__panel.is-active{
    opacity: 1; visibility: visible; transform: none;
    transition: opacity .6s var(--ease) .12s, transform .6s var(--ease) .12s, visibility 0s;
}
.fkg__num{
    font-family: var(--f-head); font-weight: 800;
    font-size: clamp(3rem, 4.8vw, 4.4rem); line-height: .9; letter-spacing: -.04em;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--c-primary);
    opacity: .9;
}
.fkg__title{
    margin: 10px 0 0;
    font-family: var(--f-head); font-weight: 800;
    font-size: clamp(2rem, 3vw, 2.8rem); line-height: 1.02; letter-spacing: -.035em;
    color: var(--c-ink);
}
.fkg__desc{
    margin: 16px 0 0; max-width: 440px;
    font-size: 1.02rem; line-height: 1.65; color: var(--c-muted);
}
.fkg__desc b{ color: var(--c-ink); font-weight: 600; }

.fkg__items{
    list-style: none; margin: 20px 0 0; padding: 0;
    border-top: 1px solid var(--c-line);
}
.fkg__items a{
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 10px 2px;
    border-bottom: 1px solid var(--c-line);
    font-family: var(--f-head); font-weight: 600; font-size: .95rem;
    color: var(--c-text); text-decoration: none;
    transition: color .25s var(--ease), padding .3s var(--ease);
}
.fkg__items a span{ overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fkg__items a i{ font-size: .8rem; color: var(--c-muted-2); transform: translateX(-6px); opacity: 0; transition: transform .3s var(--ease), opacity .3s var(--ease), color .3s var(--ease); }
.fkg__items a:hover, .fkg__items a:focus-visible{ color: var(--c-primary); padding-inline-start: 10px; }
.fkg__items a:hover i, .fkg__items a:focus-visible i{ transform: none; opacity: 1; color: var(--c-primary); }

.fkg__foot{ display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 22px; }
.fkg__btn{
    display: inline-flex; align-items: center; gap: 12px;
    padding: 15px 18px 15px 24px; border-radius: 999px;
    background: var(--c-ink); color: #fff; text-decoration: none;
    font-family: var(--f-head); font-weight: 700; font-size: .95rem;
    transition: background-color .3s var(--ease), box-shadow .3s var(--ease);
}
.fkg__btn i{
    width: 30px; height: 30px; border-radius: 50%;
    display: grid; place-items: center;
    background: var(--c-primary); font-size: .8rem;
    transition: transform .35s var(--ease);
}
.fkg__btn:hover, .fkg__btn:focus-visible{ background: var(--c-primary); box-shadow: var(--sh-primary); color: #fff; }
.fkg__btn:hover i, .fkg__btn:focus-visible i{ background: rgba(255,255,255,.18); transform: rotate(-45deg); }
.fkg__total{
    font-family: var(--f-head); font-weight: 600; font-size: .85rem;
    color: var(--c-muted); padding: 7px 14px; border-radius: 999px;
    background: var(--c-surface); border: 1px solid var(--c-line);
}

/* ---------- Görsel sahne ---------- */
.fkg__visual{
    position: relative;
    background:
        radial-gradient(120% 90% at 70% 40%, var(--c-primary-soft) 0%, rgba(255,255,255,0) 62%),
        var(--c-surface);
    border-inline-start: 1px solid var(--c-line);
    overflow: hidden;
}
.fkg__grid{
    position: absolute; inset: 0;
    background-image: radial-gradient(circle, rgba(11,11,13,.13) 1px, transparent 1.4px);
    background-size: 26px 26px;
    -webkit-mask-image: radial-gradient(75% 70% at 55% 50%, #000 20%, transparent 100%);
            mask-image: radial-gradient(75% 70% at 55% 50%, #000 20%, transparent 100%);
}
.fkg__glow{
    position: absolute; left: 50%; top: 50%;
    width: 62%; aspect-ratio: 1; border-radius: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, color-mix(in srgb, var(--c-primary) 22%, transparent) 0%, transparent 68%);
    filter: blur(10px);
}
.fkg__ring{
    position: absolute; left: 50%; top: 50%;
    width: min(74%, 520px); aspect-ratio: 1; border-radius: 50%;
    border: 1px dashed color-mix(in srgb, var(--c-primary) 45%, transparent);
    transform: translate(-50%, -50%);
    animation: fkgSpin 60s linear infinite;
}
.fkg__ring::after{
    content: ""; position: absolute; top: -5px; left: 50%;
    width: 10px; height: 10px; border-radius: 50%;
    background: var(--c-primary);
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--c-primary) 18%, transparent);
}
@keyframes fkgSpin{ to{ transform: translate(-50%, -50%) rotate(360deg); } }

.fkg__corner{ position: absolute; width: 22px; height: 22px; border-color: var(--c-line-2); border-style: solid; z-index: 3; }
.fkg__corner--tl{ top: 20px; left: 20px; border-width: 1.5px 0 0 1.5px; }
.fkg__corner--br{ bottom: 20px; right: 20px; border-width: 0 1.5px 1.5px 0; }

.fkg__shot{
    position: absolute; inset: 0;
    display: grid; place-items: center;
    pointer-events: none;
}
/* Dev grup adı: kontur yazı, yavaşça yana kayar */
.fkg__word{
    position: absolute; left: 0; top: 50%;
    display: flex; white-space: nowrap;
    transform: translateY(-50%);
    font-family: var(--f-head); font-weight: 800;
    font-size: clamp(5rem, 11vw, 10rem); line-height: 1; letter-spacing: -.04em; text-transform: uppercase;
    color: transparent;
    -webkit-text-stroke: 1.2px color-mix(in srgb, var(--c-primary) 30%, transparent);
    opacity: 0;
    transition: opacity .6s var(--ease);
}
.fkg__word span{ padding-inline-end: .5em; animation: fkgMarquee 26s linear infinite; }
@keyframes fkgMarquee{ to{ transform: translateX(-100%); } }

.fkg__shot img{
    position: relative; z-index: 2;
    width: min(66%, 480px); height: min(62%, 380px);
    object-fit: contain;
    filter: drop-shadow(0 30px 34px rgba(11,11,13,.22));
    opacity: 0;
    transform: translateY(30px) scale(.86) rotate(-5deg);
    transition: opacity .5s var(--ease), transform .8s cubic-bezier(.2, .8, .2, 1), filter .5s var(--ease);
}
.fkg__floor{
    position: absolute; left: 50%; bottom: 13%;
    width: 46%; height: 26px; border-radius: 50%;
    background: radial-gradient(closest-side, rgba(11,11,13,.2), transparent);
    transform: translateX(-50%) scaleX(.6);
    opacity: 0;
    transition: opacity .6s var(--ease), transform .8s var(--ease);
}
.fkg__shot.is-active .fkg__word{ opacity: 1; }
.fkg__shot.is-active img{
    opacity: 1; transform: none;
    animation: fkgFloat 6s ease-in-out .9s infinite;
}
.fkg__shot.is-active .fkg__floor{ opacity: 1; transform: translateX(-50%); animation: fkgShadow 6s ease-in-out .9s infinite; }
.fkg__shot.is-leaving img{ opacity: 0; transform: translateY(-20px) scale(1.06) rotate(4deg); filter: blur(6px) drop-shadow(0 30px 34px rgba(11,11,13,0)); }
@keyframes fkgFloat{ 0%, 100%{ transform: translateY(0); } 50%{ transform: translateY(-14px); } }
@keyframes fkgShadow{ 0%, 100%{ transform: translateX(-50%) scaleX(1); opacity: 1; } 50%{ transform: translateX(-50%) scaleX(.85); opacity: .7; } }

/* ---------- Sekmeler ---------- */
.fkg__tabs{
    display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px; margin-top: 16px;
}
.fkg__tab{
    position: relative;
    display: flex; align-items: center; gap: 14px;
    padding: 12px 16px 16px 12px; text-align: start;
    background: #fff; border: 1px solid var(--c-line); border-radius: 18px;
    color: var(--c-ink); cursor: pointer; overflow: hidden;
    transition: border-color .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease);
}
.fkg__tab:hover{ transform: translateY(-3px); box-shadow: var(--sh-sm); }
.fkg__tab:focus-visible{ outline: 2px solid var(--c-primary); outline-offset: 2px; }
.fkg__tab.is-active{ border-color: color-mix(in srgb, var(--c-primary) 40%, var(--c-line)); box-shadow: var(--sh); }
.fkg__thumb{
    flex: 0 0 auto; width: 56px; height: 56px; border-radius: 14px;
    display: grid; place-items: center;
    background: var(--c-surface);
    transition: background-color .3s var(--ease);
}
.fkg__thumb img{ width: 80%; height: 80%; object-fit: contain; }
.fkg__tab.is-active .fkg__thumb{ background: var(--c-primary-soft); }
.fkg__tab-text{ display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.fkg__tab-text small{ font-family: var(--f-head); font-weight: 700; font-size: .72rem; letter-spacing: .12em; color: var(--c-muted-2); }
.fkg__tab-text b{ font-family: var(--f-head); font-weight: 700; font-size: 1rem; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fkg__tab.is-active .fkg__tab-text small{ color: var(--c-primary); }
.fkg__bar{ position: absolute; left: 12px; right: 12px; bottom: 7px; height: 3px; border-radius: 3px; background: var(--c-line); overflow: hidden; }
.fkg__bar i{ display: block; height: 100%; width: 100%; background: var(--c-primary); transform: scaleX(0); transform-origin: left center; }
.fkg__tab.is-done .fkg__bar i{ transform: scaleX(1); background: var(--c-line-2); }
.fkg.is-playing .fkg__tab.is-active .fkg__bar i{ animation: fkgBar var(--fkg-dur) linear forwards; }
.fkg.is-paused .fkg__tab.is-active .fkg__bar i{ animation-play-state: paused; }
.fkg:not(.is-playing) .fkg__tab.is-active .fkg__bar i{ transform: scaleX(1); }
@keyframes fkgBar{ from{ transform: scaleX(0); } to{ transform: scaleX(1); } }

/* ---------- Sağdan sola (Arapça) ---------- */
[dir="rtl"] .fkg__nav i, [dir="rtl"] .fkg__btn i, [dir="rtl"] .fkg__items a i{ transform: scaleX(-1); }
[dir="rtl"] .fkg__btn:hover i{ transform: scaleX(-1) rotate(-45deg); }
[dir="rtl"] .fkg__items a:hover i{ transform: scaleX(-1); }
[dir="rtl"] .fkg__bar i{ transform-origin: right center; }
[dir="rtl"] .fkg__corner--tl{ left: auto; right: 20px; border-width: 1.5px 1.5px 0 0; }
[dir="rtl"] .fkg__corner--br{ right: auto; left: 20px; border-width: 0 0 1.5px 1.5px; }
[dir="rtl"] .fkg__word span{ animation-direction: reverse; }

/* ---------- Duyarlı ---------- */
@media (max-width: 991px){
    .fkg__stage{ grid-template-columns: 1fr; min-height: 0; }
    .fkg__visual{ order: -1; height: clamp(280px, 56vw, 420px); border-inline-start: 0; border-bottom: 1px solid var(--c-line); }
    .fkg__info{ padding: 28px 24px 30px; }
    .fkg__tabs{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 575px){
    .fkg__head{ align-items: flex-start; }
    .fkg__ctrl{ width: 100%; justify-content: flex-end; }
    .fkg__count{ margin-inline-end: auto; }
    .fkg__nav{ width: 46px; height: 46px; }
    .fkg__stage{ border-radius: 24px; }
    .fkg__num{ font-size: 2.8rem; }
    .fkg__tabs{ gap: 8px; }
    .fkg__tab{ padding: 10px 10px 14px; gap: 10px; border-radius: 14px; }
    .fkg__thumb{ width: 42px; height: 42px; border-radius: 10px; }
    .fkg__tab-text b{ font-size: .88rem; white-space: normal; }
    .fkg__word{ font-size: 4.2rem; }
}

@media (prefers-reduced-motion: reduce){
    .fkg__ring, .fkg__word span, .fkg__shot.is-active img, .fkg__shot.is-active .fkg__floor{ animation: none; }
    .fkg__panel, .fkg__panel.is-active, .fkg__shot img, .fkg__word, .fkg__floor{ transition: none; }
}