/* =============================================================================
   ISO THERMAL — Ana Stil Sayfası (Design System + Bileşenler)
   "Hajster motion dili + ISO Thermal marka kimliği"
   ============================================================================= */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

body {
    font-family: var(--font-body);
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    color: var(--slate-700);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

img, svg, canvas, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
ul, ol { list-style: none; padding: 0; }
:focus-visible { outline: 3px solid var(--season); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--red); color: #fff; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; color: var(--ink); line-height: var(--lh-tight); letter-spacing: -0.02em; }

/* ---------- Layout primitives ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: var(--container-narrow); }
.section { padding-block: var(--section-y); }
.section--ink { background: var(--ink); color: var(--on-ink); }
.section--paper2 { background: var(--paper-2); }
.section--tight { padding-block: clamp(2.5rem, 1.5rem + 4vw, 5rem); }
main { display: block; }

.grid { display: grid; gap: var(--gutter); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; } }

/* ---------- Typography helpers ---------- */
.eyebrow {
    display: inline-flex; align-items: center; gap: .6rem;
    font-family: var(--font-mono); font-size: var(--fs-mono);
    letter-spacing: var(--tracking-mono); text-transform: uppercase;
    color: var(--red); font-weight: 500;
}
.eyebrow::before {
    content: ""; width: 26px; height: 1px; background: var(--red);
    display: inline-block;
}
.section--ink .eyebrow { color: var(--season-soft); }
.section--ink .eyebrow::before { background: var(--season-soft); }

.display { font-family: var(--font-display); font-size: var(--fs-display); line-height: var(--lh-tight); letter-spacing: -0.035em; font-weight: 600; }
.h1 { font-size: var(--fs-h1); }
.h2 { font-size: var(--fs-h2); }
.h3 { font-size: var(--fs-h3); }
.lead { font-size: var(--fs-lead); line-height: 1.5; color: var(--slate-500); }
.section--ink .lead { color: var(--on-ink-dim); }
.mono { font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: var(--tracking-mono); text-transform: uppercase; }
.text-red { color: var(--red); }
.measure { max-width: 62ch; }

.section-head { max-width: 760px; margin-bottom: clamp(2rem, 1rem + 3vw, 3.5rem); }
.section-head .eyebrow { margin-bottom: 1.1rem; }
.section-head h2 { font-size: var(--fs-h2); }
.section-head p { margin-top: 1rem; font-size: var(--fs-lead); color: var(--slate-500); }
.section--ink .section-head p { color: var(--on-ink-dim); }

/* ---------- Buttons ---------- */
.btn {
    --bg: var(--ink); --fg: #fff; --bd: var(--ink);
    position: relative; display: inline-flex; align-items: center; gap: .65rem;
    padding: .95rem 1.7rem; border-radius: var(--r-pill);
    font-weight: 600; font-size: .96rem; letter-spacing: -0.01em;
    color: var(--fg); background: var(--bg);
    border: 1.5px solid var(--bd);
    overflow: hidden; isolation: isolate;
    transition: color var(--d-fast) var(--e-out), transform var(--d-fast) var(--e-out), border-color var(--d-fast);
    will-change: transform;
}
.btn__label, .btn svg { position: relative; z-index: 2; }
.btn::after {
    content: ""; position: absolute; inset: 0; z-index: 1; background: var(--red);
    transform: translateY(101%); transition: transform var(--d-mid) var(--e-out);
}
.btn:hover { color: #fff; border-color: var(--red); transform: translateY(-2px); }
.btn:hover::after { transform: translateY(0); }
.btn svg { width: 1.05em; height: 1.05em; transition: transform var(--d-fast) var(--e-out); }
.btn:hover svg { transform: translateX(3px); }

.btn--primary { --bg: var(--red); --bd: var(--red); }
.btn--primary::after { background: var(--ink); }
.btn--primary:hover { border-color: var(--ink); }

.btn--ghost { --bg: transparent; --fg: var(--ink); --bd: var(--line-strong); }
.section--ink .btn--ghost { --fg: #fff; --bd: rgba(255,255,255,.28); }
.btn--ghost:hover { color:#fff; }

.btn--lg { padding: 1.1rem 2rem; font-size: 1.02rem; }
.btn--block { display: flex; width: 100%; justify-content: center; }

/* Text link with reveal underline */
.tlink { position: relative; display: inline-flex; align-items: center; gap: .5rem; font-weight: 600; color: var(--ink); }
.section--ink .tlink { color: #fff; }
.tlink::after { content:""; position:absolute; left:0; bottom:-3px; height:2px; width:100%; background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform var(--d-mid) var(--e-out); }
.tlink:hover::after { transform: scaleX(1); }
.tlink svg { width: 1em; height: 1em; transition: transform var(--d-fast) var(--e-out); }
.tlink:hover svg { transform: translateX(4px); }

/* ---------- Header / Nav ---------- */
.site-header {
    position: fixed; inset: 0 0 auto 0; z-index: var(--z-header);
    height: var(--header-h);
    display: flex; align-items: center;
    transition: background var(--d-mid) var(--e-out), box-shadow var(--d-mid), height var(--d-mid);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; width: 100%; }
.site-header.is-scrolled { background: rgba(255,255,255,.86); backdrop-filter: saturate(140%) blur(14px); box-shadow: 0 1px 0 var(--line); height: 64px; }
.site-header.is-dark:not(.is-scrolled) { color: #fff; }
.site-header.is-dark:not(.is-scrolled) .nav__link { color: rgba(255,255,255,.86); }
.site-header.is-dark:not(.is-scrolled) .brand__txt { color: #fff; }

.brand { display: flex; align-items: center; gap: .7rem; flex-shrink: 0; }
.brand__mark { height: 34px; width: auto; }
.brand__txt { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; color: var(--ink); display: flex; gap: .12em; }
.brand__txt b { color: var(--red); font-weight: 700; }

.nav { display: flex; align-items: center; gap: clamp(.4rem, .2rem + .8vw, 1.4rem); }
.nav__link { position: relative; font-weight: 500; font-size: .95rem; color: var(--ink-700); padding: .4rem 0; transition: color var(--d-fast); }
.nav__link::after { content:""; position:absolute; left:0; bottom:-2px; height:2px; width:100%; background: var(--red); transform: scaleX(0); transform-origin: center; transition: transform var(--d-fast) var(--e-out); }
.nav__link:hover { color: var(--red); }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }

.header-tools { display: flex; align-items: center; gap: 1rem; flex-shrink: 0; }

/* Language switcher */
.lang { position: relative; }
.lang__btn { display:flex; align-items:center; gap:.4rem; font-family: var(--font-mono); font-size: .72rem; letter-spacing:.1em; text-transform: uppercase; padding:.45rem .7rem; border:1px solid var(--line-strong); border-radius: var(--r-pill); transition: border-color var(--d-fast); }
.site-header.is-dark:not(.is-scrolled) .lang__btn { border-color: rgba(255,255,255,.3); color:#fff; }
.lang__btn:hover { border-color: var(--red); }
.lang__menu { position:absolute; top:calc(100% + .5rem); inset-inline-end:0; background:#fff; border:1px solid var(--line); border-radius: var(--r-md); box-shadow: var(--sh-2); padding:.35rem; min-width:140px; opacity:0; visibility:hidden; transform: translateY(-6px); transition: all var(--d-fast) var(--e-out); }
.lang.is-open .lang__menu { opacity:1; visibility:visible; transform:none; }
.lang__menu a { display:block; padding:.55rem .75rem; border-radius: var(--r-sm); font-size:.9rem; color: var(--ink-700); }
.lang__menu a:hover, .lang__menu a.is-active { background: var(--paper-2); color: var(--red); }

/* Mobile nav toggle */
.nav-toggle { display:none; width:44px; height:44px; flex-direction:column; gap:5px; align-items:center; justify-content:center; }
.nav-toggle span { width:24px; height:2px; background: currentColor; transition: transform var(--d-fast) var(--e-out), opacity var(--d-fast); }
.nav-toggle.is-open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2){ opacity:0; }
.nav-toggle.is-open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay nav */
.mobile-nav { position: fixed; inset: 0; z-index: 99; background: var(--ink); color:#fff; padding: calc(var(--header-h) + 2rem) var(--gutter) 2rem; transform: translateY(-100%); transition: transform var(--d-mid) var(--e-inout); display:flex; flex-direction:column; overflow-y:auto; }
.mobile-nav.is-open { transform: none; }
.mobile-nav a { font-family: var(--font-display); font-size: clamp(1.6rem, 1rem + 4vw, 2.4rem); padding: .5rem 0; border-bottom: 1px solid rgba(255,255,255,.08); display:flex; justify-content:space-between; align-items:center; }
.mobile-nav a span { font-family: var(--font-mono); font-size:.8rem; color: var(--on-ink-faint); }

@media (max-width: 1080px) {
    .nav { display:none; }
    .nav-toggle { display:flex; }
}

/* =============================================================================
   HERO — Signature: scroll-driven "thermal scan"
   ============================================================================= */
.hero {
    position: relative; min-height: 100svh; background: var(--ink); color: #fff;
    display: flex; align-items: flex-end; overflow: hidden;
    padding-top: var(--header-h);
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
/* CSS gradient fallback (JS kapalıysa boş kalmaz — V1 hatası #1) */
.hero__fallback {
    position:absolute; inset:0;
    background:
        radial-gradient(120% 90% at 18% 18%, rgba(225,45,45,.55), transparent 55%),
        radial-gradient(120% 90% at 85% 80%, rgba(43,111,176,.55), transparent 55%),
        linear-gradient(120deg, #1a0f12, #0E1116 55%, #0c1420);
}
.hero__thermal { position:absolute; inset:0; width:100%; height:100%; opacity:.92; }
.hero__grain { position:absolute; inset:0; opacity:.06; mix-blend-mode: overlay; background-image: var(--grain); pointer-events:none; }
.hero__vignette { position:absolute; inset:0; background: linear-gradient(180deg, rgba(14,17,22,.55) 0%, transparent 22%, transparent 45%, rgba(14,17,22,.85) 100%); }

/* Scan line (sürüklenebilir + scroll'a bağlı) */
.hero__scan { position:absolute; top:0; bottom:0; left:50%; width:2px; z-index:3; background: linear-gradient(180deg, transparent, var(--season-soft) 12%, #fff 50%, var(--season-soft) 88%, transparent); box-shadow: 0 0 24px 2px rgba(255,255,255,.4); transform: translateX(-50%); }
.hero__scan-handle { position:absolute; top:50%; left:50%; transform: translate(-50%,-50%); width:54px; height:54px; border-radius:50%; background: rgba(14,17,22,.6); backdrop-filter: blur(6px); border:1.5px solid rgba(255,255,255,.6); display:grid; place-items:center; cursor: ew-resize; transition: transform var(--d-fast) var(--e-spring); }
.hero__scan-handle:hover { transform: translate(-50%,-50%) scale(1.08); }
.hero__scan-handle::before { content:"‹ ›"; letter-spacing:.1em; font-size:.8rem; color:#fff; font-family: var(--font-mono); }
.hero__side-tag { position:absolute; top: calc(var(--header-h) + 1.4rem); z-index:3; font-family: var(--font-mono); font-size:.68rem; letter-spacing:.18em; text-transform:uppercase; padding:.4rem .7rem; border-radius: var(--r-pill); backdrop-filter: blur(6px); }
.hero__side-tag--hot { left: var(--gutter); color:#fff; background: rgba(225,45,45,.22); border:1px solid rgba(255,120,120,.5); }
.hero__side-tag--cool { right: var(--gutter); color:#fff; background: rgba(43,111,176,.22); border:1px solid rgba(120,180,240,.5); }

.hero__inner { position: relative; z-index: 4; width:100%; padding-bottom: clamp(3rem, 1.5rem + 6vw, 6rem); }
.hero__eyebrow { margin-bottom: 1.4rem; color: var(--season-soft); }
.hero__eyebrow::before { background: var(--season-soft); }
.hero__title { font-size: var(--fs-display); letter-spacing: -0.04em; color:#fff; max-width: 16ch; }
.hero__title .accent { color: var(--season-soft); transition: color var(--d-slow) var(--e-out); }
.hero__lead { margin-top: 1.6rem; max-width: 46ch; font-size: var(--fs-lead); color: var(--on-ink-dim); }
.hero__cta { margin-top: 2.2rem; display:flex; flex-wrap:wrap; gap: 1rem; }

/* Live thermal gauge */
.gauge { position:absolute; z-index:4; top: 50%; inset-inline-end: var(--gutter); transform: translateY(-50%);
    width: 232px; padding: 1.1rem 1.2rem 1.2rem; border-radius: var(--r-lg);
    background: rgba(14,17,22,.42); backdrop-filter: blur(14px); border:1px solid rgba(255,255,255,.14);
    box-shadow: var(--sh-3); }
.gauge__top { display:flex; align-items:center; justify-content:space-between; margin-bottom:.9rem; }
.gauge__label { font-family: var(--font-mono); font-size:.62rem; letter-spacing:.16em; text-transform:uppercase; color: var(--on-ink-dim); }
.gauge__season-dot { width:10px; height:10px; border-radius:50%; background: var(--season); box-shadow: 0 0 12px var(--season); transition: background var(--d-slow), box-shadow var(--d-slow); }
.gauge__readout { display:flex; align-items:baseline; gap:.5rem; }
.gauge__num { font-family: var(--font-display); font-size: 2.6rem; font-weight:600; color:#fff; letter-spacing:-0.03em; font-variant-numeric: tabular-nums; }
.gauge__unit { font-family: var(--font-mono); font-size:.8rem; color: var(--on-ink-dim); }
.gauge__bar { position:relative; height:8px; border-radius: var(--r-pill); margin:.9rem 0 .5rem; background: linear-gradient(90deg, var(--t-cold), var(--t-cool), var(--t-mid), var(--t-warm), var(--t-hot)); }
.gauge__bar-knob { position:absolute; top:50%; width:14px; height:14px; border-radius:50%; background:#fff; border:2px solid var(--ink); transform: translate(-50%,-50%); transition: left var(--d-slow) var(--e-out); box-shadow: var(--sh-1); }
.gauge__delta { font-family: var(--font-mono); font-size:.64rem; letter-spacing:.1em; color: var(--spring-soft); display:flex; justify-content:space-between; }
.gauge__delta b { color: var(--t-hot); }

/* Season rail */
.season-rail { position:absolute; z-index:4; left: var(--gutter); bottom: clamp(1.2rem,1vw,2rem); display:flex; gap:.5rem; }
.season-rail__btn { display:flex; flex-direction:column; gap:.5rem; align-items:flex-start; padding:.7rem .9rem; border-radius: var(--r-md); border:1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.04); min-width:96px; transition: border-color var(--d-fast), background var(--d-fast); }
.season-rail__btn:hover { background: rgba(255,255,255,.09); }
.season-rail__btn.is-active { border-color: var(--s-color); background: rgba(255,255,255,.1); }
.season-rail__swatch { width:100%; height:4px; border-radius: var(--r-pill); background: var(--s-color); opacity:.5; transition: opacity var(--d-fast); }
.season-rail__btn.is-active .season-rail__swatch { opacity:1; }
.season-rail__name { font-family: var(--font-mono); font-size:.62rem; letter-spacing:.12em; text-transform:uppercase; color: var(--on-ink-dim); }
.season-rail__btn.is-active .season-rail__name { color:#fff; }

.hero__scrollcue { position:absolute; z-index:4; left:50%; bottom:1.4rem; transform:translateX(-50%); display:flex; flex-direction:column; align-items:center; gap:.4rem; font-family: var(--font-mono); font-size:.6rem; letter-spacing:.2em; text-transform:uppercase; color: var(--on-ink-faint); }
.hero__scrollcue .line { width:1px; height:34px; background: linear-gradient(var(--on-ink-faint), transparent); animation: cue 1.8s var(--e-inout) infinite; }
@keyframes cue { 0%{ transform: scaleY(.2); transform-origin: top; } 50%{ transform: scaleY(1); transform-origin: top; } 100%{ transform: scaleY(.2); transform-origin: bottom; } }

@media (max-width: 980px) {
    .gauge { position: static; transform:none; width:auto; margin-top: 1.8rem; }
    .hero { align-items: center; }
    .hero__inner { padding-top: 2rem; }
    .season-rail { position: static; margin-top: 1.4rem; flex-wrap:wrap; }
    .hero__scrollcue, .hero__scan-handle { display:none; }
    .hero__side-tag { display:none; }
}

/* =============================================================================
   Stat strip (18 yıl Ar-Ge, 13 yıl saha, 60+ il...)
   ============================================================================= */
.stats { display:grid; grid-template-columns: repeat(4,1fr); gap:0; border-block:1px solid var(--line); }
.stat { padding: clamp(1.5rem,1rem+2vw,2.6rem) clamp(1rem,.5rem+1vw,1.8rem); border-inline-start:1px solid var(--line); }
.stat:first-child { border-inline-start:0; }
.stat__num { font-family: var(--font-display); font-size: clamp(2.4rem,1.6rem+3vw,3.6rem); font-weight:600; letter-spacing:-0.03em; color: var(--ink); font-variant-numeric: tabular-nums; line-height:1; }
.stat__num .suf { color: var(--red); }
.stat__label { margin-top:.7rem; font-size:.92rem; color: var(--slate-500); }
.section--ink .stat { border-color: rgba(255,255,255,.1); }
.section--ink .stat__num { color:#fff; }
.section--ink .stat__label { color: var(--on-ink-dim); }
@media (max-width: 760px){ .stats { grid-template-columns: repeat(2,1fr); } .stat:nth-child(odd){ border-inline-start:0; } .stat:nth-child(n+3){ border-top:1px solid var(--line); } }

/* =============================================================================
   Advantage grid (16 avantaj) — interactive deck
   ============================================================================= */
.adv-grid { display:grid; grid-template-columns: repeat(4,1fr); gap:1px; background: var(--line); border:1px solid var(--line); border-radius: var(--r-lg); overflow:hidden; }
.adv {
    position:relative; background: var(--paper); padding: 1.6rem 1.5rem 1.7rem; min-height: 210px;
    display:flex; flex-direction:column; justify-content:space-between; isolation:isolate; overflow:hidden;
    transition: color var(--d-mid) var(--e-out);
}
.adv::before { content:""; position:absolute; inset:0; z-index:-1; background: var(--ink); transform: translateY(100%); transition: transform var(--d-mid) var(--e-out); }
.adv:hover { color:#fff; }
.adv:hover::before { transform: translateY(0); }
.adv:hover .adv__num { color: var(--season-soft); }
.adv:hover .adv__desc { color: var(--on-ink-dim); opacity:1; max-height: 80px; }
.adv__num { font-family: var(--font-mono); font-size:.7rem; letter-spacing:.16em; color: var(--red); transition: color var(--d-mid); }
.adv__icon { width:40px; height:40px; margin:.6rem 0 1rem; color: var(--red); }
.adv:hover .adv__icon { color:#fff; }
.adv__title { font-family: var(--font-display); font-size: 1.12rem; font-weight:600; letter-spacing:-0.02em; line-height:1.2; }
.adv__desc { margin-top:.6rem; font-size:.86rem; line-height:1.5; color: var(--slate-500); opacity:0; max-height:0; overflow:hidden; transition: all var(--d-mid) var(--e-out); }
@media (max-width:980px){ .adv-grid { grid-template-columns: repeat(2,1fr); } .adv__desc { opacity:1; max-height:none; } }
@media (max-width:520px){ .adv-grid { grid-template-columns: 1fr; } }

/* =============================================================================
   Application cards (10 uygulama alanı)
   ============================================================================= */
.app-grid { display:grid; grid-template-columns: repeat(12,1fr); gap: var(--gutter); }
.app-card { position:relative; grid-column: span 4; border-radius: var(--r-lg); overflow:hidden; background: var(--ink); min-height: 360px; display:flex; isolation:isolate; }
.app-card--wide { grid-column: span 6; }
.app-card--tall { grid-column: span 4; min-height: 460px; }
.app-card__media { position:absolute; inset:0; z-index:0; }
.app-card__media img, .app-card__media .img-ph { width:100%; height:100%; object-fit:cover; }
.app-card__media::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(14,17,22,.15) 0%, rgba(14,17,22,.35) 45%, rgba(14,17,22,.92) 100%); transition: background var(--d-mid); }
.app-card:hover .app-card__media::after { background: linear-gradient(180deg, rgba(200,16,46,.15) 0%, rgba(14,17,22,.45) 45%, rgba(14,17,22,.95) 100%); }
.app-card__media img { transition: transform var(--d-slow) var(--e-out); }
.app-card:hover .app-card__media img { transform: scale(1.06); }
.app-card__body { position:relative; z-index:1; margin-top:auto; padding: 1.6rem; color:#fff; width:100%; }
.app-card__idx { font-family: var(--font-mono); font-size:.68rem; letter-spacing:.16em; color: var(--season-soft); }
.app-card__title { font-family: var(--font-display); font-size: 1.45rem; font-weight:600; letter-spacing:-0.02em; margin-top:.4rem; }
.app-card__meta { margin-top:.6rem; font-size:.85rem; color: var(--on-ink-dim); display:flex; flex-wrap:wrap; gap:.4rem 1rem; opacity:0; transform: translateY(8px); transition: all var(--d-mid) var(--e-out); }
.app-card:hover .app-card__meta { opacity:1; transform:none; }
.app-card__temp { position:absolute; top:1.2rem; inset-inline-end:1.2rem; z-index:1; font-family: var(--font-mono); font-size:.66rem; letter-spacing:.05em; padding:.4rem .65rem; border-radius: var(--r-pill); background: rgba(255,255,255,.12); backdrop-filter: blur(6px); border:1px solid rgba(255,255,255,.2); color:#fff; }
.app-card__temp b { color: var(--t-frost); }
.app-card__arrow { position:absolute; top:1.2rem; inset-inline-start:1.2rem; z-index:1; width:38px; height:38px; border-radius:50%; border:1px solid rgba(255,255,255,.3); display:grid; place-items:center; opacity:0; transform: scale(.6); transition: all var(--d-mid) var(--e-spring); }
.app-card:hover .app-card__arrow { opacity:1; transform:none; }
@media (max-width:980px){ .app-card, .app-card--wide, .app-card--tall { grid-column: span 6; min-height: 320px; } }
@media (max-width:620px){ .app-card, .app-card--wide, .app-card--tall { grid-column: span 12; } }

/* =============================================================================
   Generic cards (products, blog, references, certificates)
   ============================================================================= */
.card { background: var(--paper); border:1px solid var(--line); border-radius: var(--r-lg); overflow:hidden; display:flex; flex-direction:column; transition: transform var(--d-mid) var(--e-out), box-shadow var(--d-mid), border-color var(--d-mid); }
.card:hover { transform: translateY(-4px); box-shadow: var(--sh-2); border-color: var(--line-strong); }
.card__media { position:relative; overflow:hidden; aspect-ratio: 16/10; background: var(--paper-3); }
.card__media img { width:100%; height:100%; object-fit:cover; transition: transform var(--d-slow) var(--e-out); }
.card:hover .card__media img { transform: scale(1.05); }
.card__tag { position:absolute; top:1rem; inset-inline-start:1rem; font-family: var(--font-mono); font-size:.62rem; letter-spacing:.12em; text-transform:uppercase; padding:.35rem .6rem; border-radius: var(--r-pill); background: rgba(255,255,255,.92); color: var(--red); }
.card__body { padding: 1.4rem 1.5rem 1.6rem; display:flex; flex-direction:column; gap:.6rem; flex:1; }
.card__meta { font-family: var(--font-mono); font-size:.66rem; letter-spacing:.1em; text-transform:uppercase; color: var(--slate-400); }
.card__title { font-family: var(--font-display); font-size: 1.25rem; font-weight:600; letter-spacing:-0.02em; color: var(--ink); }
.card__excerpt { font-size:.92rem; color: var(--slate-500); }
.card__foot { margin-top:auto; padding-top:.4rem; }

/* =============================================================================
   Split feature / measurement showcase
   ============================================================================= */
.split { display:grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,1rem+4vw,5rem); align-items:center; }
.split--reverse .split__media { order:2; }
.split__media { border-radius: var(--r-lg); overflow:hidden; aspect-ratio: 4/3; background: var(--paper-3); box-shadow: var(--sh-2); }
.split__media img { width:100%; height:100%; object-fit:cover; }
@media (max-width:860px){ .split { grid-template-columns:1fr; } .split--reverse .split__media { order:0; } }

/* Measurement chips (before/after temps) */
.measure-row { display:flex; flex-wrap:wrap; gap:.8rem; margin-top:1.4rem; }
.chip { display:inline-flex; align-items:center; gap:.6rem; padding:.6rem .9rem; border-radius: var(--r-md); border:1px solid var(--line); background: var(--paper); font-family: var(--font-mono); font-size:.74rem; letter-spacing:.04em; }
.section--ink .chip { background: var(--ink-700); border-color: var(--ink-600); color: var(--on-ink); }
.chip__from { color: var(--t-hot); } .chip__to { color: var(--t-cold); }
.chip__arrow { color: var(--slate-400); }

/* =============================================================================
   CTA band
   ============================================================================= */
.cta-band { position:relative; background: var(--red); color:#fff; border-radius: var(--r-xl); padding: clamp(2.5rem,1.5rem+5vw,5rem); overflow:hidden; isolation:isolate; }
.cta-band::after { content:""; position:absolute; inset:0; z-index:-1; background: radial-gradient(120% 140% at 100% 0%, rgba(14,17,22,.55), transparent 55%); }
.cta-band h2 { color:#fff; font-size: var(--fs-h2); max-width: 18ch; }
.cta-band p { margin-top:1rem; max-width: 48ch; color: rgba(255,255,255,.88); font-size: var(--fs-lead); }
.cta-band .btn--ghost { --fg:#fff; --bd: rgba(255,255,255,.5); }
.cta-band .btn--primary { --bg:#fff; --fg: var(--red); --bd:#fff; }
.cta-band .btn--primary::after { background: var(--ink); }
.cta-band .btn--primary:hover { --fg:#fff; }

/* =============================================================================
   Breadcrumb + page hero
   ============================================================================= */
.page-hero { background: var(--ink); color:#fff; padding-top: calc(var(--header-h) + clamp(2.5rem,1rem+5vw,5rem)); padding-bottom: clamp(2.5rem,1rem+5vw,5rem); position:relative; overflow:hidden; }
.page-hero::before { content:""; position:absolute; inset:0; opacity:.5; background: radial-gradient(80% 120% at 100% 0%, color-mix(in srgb, var(--season) 40%, transparent), transparent 60%); }
.page-hero__inner { position:relative; z-index:1; }
.page-hero h1 { color:#fff; font-size: var(--fs-h1); max-width: 18ch; margin-top:1rem; }
.page-hero .lead { color: var(--on-ink-dim); margin-top:1.2rem; max-width: 56ch; }
.crumbs { display:flex; flex-wrap:wrap; gap:.5rem; align-items:center; font-family: var(--font-mono); font-size:.68rem; letter-spacing:.1em; text-transform:uppercase; color: var(--on-ink-faint); }
.crumbs a:hover { color:#fff; }
.crumbs .sep { opacity:.5; }

/* =============================================================================
   Forms
   ============================================================================= */
.field { display:flex; flex-direction:column; gap:.5rem; margin-bottom:1.2rem; }
.field label { font-size:.85rem; font-weight:600; color: var(--ink-700); }
.field label .req { color: var(--red); }
.input, .textarea, .select { width:100%; padding:.95rem 1.1rem; border:1.5px solid var(--line-strong); border-radius: var(--r-md); background: var(--paper); font: inherit; font-size:.96rem; color: var(--ink); transition: border-color var(--d-fast), box-shadow var(--d-fast); }
.input:focus, .textarea:focus, .select:focus { outline:none; border-color: var(--red); box-shadow: 0 0 0 4px var(--red-tint); }
.textarea { min-height: 150px; resize: vertical; }
.field__hint { font-size:.78rem; color: var(--slate-400); }
.field__err { font-size:.8rem; color: var(--red); font-weight:600; }
.form-note { font-size:.82rem; color: var(--slate-500); }

.alert { padding:1rem 1.2rem; border-radius: var(--r-md); font-size:.92rem; margin-bottom:1.4rem; border:1px solid; }
.alert--ok { background:#eaf7ef; border-color:#aedcbf; color:#1c6b3f; }
.alert--err { background: var(--red-tint); border-color:#f0b6bf; color: var(--red-600); }

/* honeypot */
.hp-field { position:absolute !important; left:-9999px; width:1px; height:1px; overflow:hidden; }

/* =============================================================================
   Footer
   ============================================================================= */
.site-footer { background: var(--ink); color: var(--on-ink-dim); padding-top: clamp(3rem,2rem+4vw,5rem); }
.footer-top { display:grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--gutter); padding-bottom: 3rem; border-bottom:1px solid rgba(255,255,255,.1); }
.footer-brand .brand__txt { color:#fff; }
.footer-brand p { margin-top:1.1rem; max-width: 40ch; font-size:.92rem; }
.footer-col h4 { color:#fff; font-family: var(--font-mono); font-size:.66rem; letter-spacing:.16em; text-transform:uppercase; font-weight:500; margin-bottom:1.1rem; }
.footer-col a { display:block; padding:.35rem 0; font-size:.92rem; color: var(--on-ink-dim); transition: color var(--d-fast); }
.footer-col a:hover { color:#fff; }
.footer-bottom { display:flex; flex-wrap:wrap; gap:1rem; justify-content:space-between; align-items:center; padding-block: 1.6rem; font-size:.82rem; color: var(--on-ink-faint); }
.footer-bottom a:hover { color:#fff; }
.footer-social { display:flex; gap:.6rem; }
.footer-social a { width:40px; height:40px; border:1px solid rgba(255,255,255,.16); border-radius:50%; display:grid; place-items:center; transition: border-color var(--d-fast), background var(--d-fast); }
.footer-social a:hover { border-color: var(--red); background: var(--red); color:#fff; }
@media (max-width:860px){ .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width:520px){ .footer-top { grid-template-columns: 1fr; } }

/* =============================================================================
   Placeholder image (görsel henüz yoksa — Brief 7/9)
   ============================================================================= */
.img-ph { position:relative; display:flex; align-items:center; justify-content:center; width:100%; background:
    repeating-linear-gradient(135deg, #e9ebef 0 12px, #eef0f3 12px 24px); color: var(--slate-400); overflow:hidden; }
.img-ph__grid { position:absolute; inset:0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 26px 26px; opacity:.5; }
.img-ph__tag { position:relative; z-index:1; font-family: var(--font-mono); font-size:.66rem; letter-spacing:.05em; padding:.4rem .65rem; border-radius: var(--r-sm); background: rgba(14,17,22,.78); color:#fff; max-width:90%; text-align:center; }
.app-card__media .img-ph, .card__media .img-ph { aspect-ratio: auto !important; }

/* =============================================================================
   Cookie banner (KVKK)
   ============================================================================= */
.cookie { position:fixed; z-index: var(--z-cookie); inset-inline: clamp(1rem,2vw,2rem); bottom: clamp(1rem,2vw,2rem); max-width: 460px; background: var(--ink); color: var(--on-ink); border:1px solid var(--ink-600); border-radius: var(--r-lg); padding:1.4rem 1.5rem; box-shadow: var(--sh-3); transform: translateY(160%); transition: transform var(--d-slow) var(--e-out); }
.cookie.is-visible { transform:none; }
.cookie h4 { color:#fff; font-size:1rem; margin-bottom:.5rem; }
.cookie p { font-size:.84rem; line-height:1.55; color: var(--on-ink-dim); }
.cookie p a { color: var(--season-soft); text-decoration: underline; }
.cookie__actions { display:flex; gap:.7rem; margin-top:1.1rem; }
.cookie .btn { padding:.7rem 1.2rem; font-size:.85rem; }

/* =============================================================================
   Reveal animations (GSAP yedeği — JS yoksa görünür kalır)
   ============================================================================= */
.reveal { opacity:0; transform: translateY(26px); }
.reveal.is-in, .no-js .reveal { opacity:1; transform:none; }
html.no-gsap .reveal { opacity:1 !important; transform:none !important; }

.clip-reveal { clip-path: inset(0 0 100% 0); }
.clip-reveal.is-in { clip-path: inset(0 0 0 0); transition: clip-path 1s var(--e-out); }

/* Marquee (uygulama yüzeyleri / anahtar kelimeler) */
.marquee { overflow:hidden; border-block:1px solid var(--line); padding-block:1.2rem; }
.section--ink .marquee { border-color: rgba(255,255,255,.1); }
.marquee__track { display:flex; gap:3rem; width:max-content; animation: marquee 38s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item { font-family: var(--font-display); font-size: clamp(1.2rem,1rem+1.6vw,2rem); font-weight:600; letter-spacing:-0.02em; color: var(--ink); display:flex; align-items:center; gap:3rem; opacity:.5; }
.section--ink .marquee__item { color:#fff; }
.marquee__item::after { content:"·"; color: var(--red); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Utilities ---------- */
.flex { display:flex; } .items-center { align-items:center; } .justify-between { justify-content:space-between; }
.gap-2 { gap:.5rem; } .gap-4 { gap:1rem; } .gap-6 { gap:2rem; }
.mt-2{margin-top:.5rem}.mt-4{margin-top:1rem}.mt-6{margin-top:2rem}.mt-8{margin-top:4rem}
.text-center { text-align:center; }
.hidden { display:none !important; }
@media (max-width: 1080px) { .hidden-sm { display:none !important; } }
.skip-link { position:absolute; left:-9999px; top:0; z-index:999; background: var(--red); color:#fff; padding:.8rem 1.2rem; border-radius:0 0 var(--r-sm) 0; }
.skip-link:focus { left:0; }
hr.rule { border:0; border-top:1px solid var(--line); margin-block: var(--sp-7); }
.section--ink hr.rule { border-color: rgba(255,255,255,.1); }
.pill-list { display:flex; flex-wrap:wrap; gap:.6rem; }
.pill { font-family: var(--font-mono); font-size:.7rem; letter-spacing:.06em; padding:.45rem .8rem; border-radius: var(--r-pill); border:1px solid var(--line); color: var(--slate-500); }
.section--ink .pill { border-color: rgba(255,255,255,.18); color: var(--on-ink-dim); }

/* =============================================================================
   FAQ accordion
   ============================================================================= */
.faq-list { display:flex; flex-direction:column; }
.faq-item { border-bottom:1px solid var(--line); }
.faq-item summary { list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between; gap:1.5rem; padding:1.5rem 0; font-family: var(--font-display); font-size: clamp(1.05rem,1rem+.4vw,1.3rem); font-weight:600; color: var(--ink); letter-spacing:-0.01em; }
.faq-item summary::-webkit-details-marker { display:none; }
.faq-item__icon { flex-shrink:0; color: var(--red); transition: transform var(--d-mid) var(--e-out); }
.faq-item[open] .faq-item__icon { transform: rotate(45deg); }
.faq-item__body { padding:0 0 1.6rem; max-width: 70ch; }
.faq-item__body p { color: var(--slate-700); line-height: var(--lh-body); }
.faq-item summary:hover { color: var(--red); }

/* =============================================================================
   RTL (Arabic) düzeltmeleri
   ============================================================================= */
html[dir="rtl"] .btn svg, html[dir="rtl"] .tlink svg, html[dir="rtl"] .nav__link,
html[dir="rtl"] .crumbs { direction: rtl; }
html[dir="rtl"] .btn svg, html[dir="rtl"] .tlink svg { transform: scaleX(-1); }
html[dir="rtl"] .btn:hover svg { transform: scaleX(-1) translateX(3px); }
html[dir="rtl"] .eyebrow::before { transform: scaleX(-1); }
html[dir="rtl"] .hero__title, html[dir="rtl"] .display { letter-spacing: 0; }
html[dir="rtl"] .mono, html[dir="rtl"] .eyebrow, html[dir="rtl"] .card__meta,
html[dir="rtl"] .gauge__label, html[dir="rtl"] .app-card__idx { letter-spacing: 0; }
html[dir="rtl"] .hero__scrollcue { letter-spacing: 0; }

/* Prose (blog / detail bodies) */
.prose { max-width: 72ch; }
.prose > * + * { margin-top: 1.2rem; }
.prose h2 { font-size: var(--fs-h3); margin-top: 2.2rem; }
.prose h3 { font-size: var(--fs-h4); margin-top: 1.8rem; color: var(--ink); }
.prose p { color: var(--slate-700); }
.prose ul { display:flex; flex-direction:column; gap:.6rem; padding-inline-start: 1.2rem; }
.prose ul li { position:relative; padding-inline-start: 1.2rem; color: var(--slate-700); }
.prose ul li::before { content:""; position:absolute; inset-inline-start:0; top:.62em; width:7px; height:7px; background: var(--red); border-radius:2px; }
.prose a { color: var(--red); text-decoration: underline; text-underline-offset:3px; }
.prose strong { color: var(--ink); }
.prose blockquote { border-inline-start:3px solid var(--red); padding-inline-start:1.4rem; font-size: var(--fs-lead); color: var(--ink-700); font-style: italic; }