/* Flybvlos Technology - tek sayfalık site */

:root {
  --orange: #dd8330;
  --orange-btn: #c9701f;
  --orange-ink: #a2530c;
  --orange-tint: #fcefe0;
  --ink: #222222;
  --text: #3b3b3b;
  --muted: #767676;
  --paper: #f6f2ef;
  --white: #ffffff;
  --black: #050505;
  --on-dark: #ffffff;
  --border-soft: #eee2d8;
  --field-border: #cfcac5;
  --header-h: 134px;

  --font-head: "Red Hat Display", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-body: "Roboto", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-nav: "Ubuntu", "Segoe UI", Helvetica, Arial, sans-serif;
}

:root[data-theme="dark"] {
  --orange-tint: rgba(221, 131, 48, .16);
  --ink: #f2efe9;
  --text: #d3cfc8;
  --muted: #9c968d;
  --paper: #1b1f27;
  --white: #12151b;
  --border-soft: rgba(255, 255, 255, .1);
  --field-border: rgba(255, 255, 255, .18);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
  opacity: 0;
  animation: page-in .6s ease forwards;
  transition: background-color .35s ease, color .35s ease;
}
@keyframes page-in { to { opacity: 1; } }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

.container {
  width: 100%;
  max-width: 1170px;
  margin-inline: auto;
  padding-inline: 15px;
}

.i {
  width: 1.25em;
  height: 1.25em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--white);
  color: var(--ink);
  border-radius: 6px;
  transition: top .2s;
}
.skip-link:focus { top: 12px; }

/* ---------- Üst menü ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  background: rgba(28, 28, 28, .42);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: background-color .3s, box-shadow .3s;
}
.site-header.is-solid {
  background: rgba(78, 78, 78, .97);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .18);
}

.header-top {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo { display: inline-flex; align-items: center; text-decoration: none; }
.logo img { height: 34px; width: auto; }
.logo-text {
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 500;
  color: var(--on-dark);
  letter-spacing: -.5px;
}

.header-nav {
  background: rgba(255, 255, 255, .07);
  border-top: 1px solid rgba(255, 255, 255, .08);
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}
.header-nav ul {
  display: flex;
  justify-content: center;
  gap: 28px;
}
.header-nav a {
  position: relative;
  display: block;
  padding: 19px 3px 21px;
  font-family: var(--font-nav);
  font-size: 15px;
  line-height: 22px;
  color: rgba(255, 255, 255, .72);
  text-decoration: none;
  transition: color .2s;
}
.header-nav a:hover { color: var(--on-dark); }
.header-nav a.active { color: var(--on-dark); }
.header-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 5px;
  height: 3px;
  border-radius: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transition: transform .25s;
}
.header-nav a.active::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--on-dark);
  font-size: 22px;
  cursor: pointer;
}
.nav-toggle .i[hidden] { display: none; }

.header-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 50%;
  background: rgba(255, 255, 255, .06);
  color: var(--on-dark);
  font-size: 18px;
  cursor: pointer;
  transition: background-color .2s, border-color .2s, transform .2s;
}
.icon-btn:hover { background: rgba(255, 255, 255, .16); transform: translateY(-1px); }
.icon-btn .i[hidden] { display: none; }

.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 15px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  color: var(--on-dark);
  font-family: var(--font-nav);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .4px;
  cursor: pointer;
  transition: background-color .2s, border-color .2s, transform .2s;
}
.lang-btn:hover { background: rgba(255, 255, 255, .16); transform: translateY(-1px); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 80px;
  color: var(--on-dark);
  text-align: center;
  overflow: hidden;
  background-color: #0c1220;
  background-image:
    linear-gradient(rgba(6, 8, 14, .62), rgba(6, 8, 14, .62)),
    url("../img/slider/background_1.webp?v=20260925");
  background-size: cover;
  background-position: center;
}

.hero-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(rgba(6, 8, 14, .62), rgba(6, 8, 14, .62));
}

.hero-glow {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(221, 131, 48, .22), transparent 65%);
  pointer-events: none;
  animation: glow-pulse 7s ease-in-out infinite;
}
@keyframes glow-pulse {
  0%, 100% { opacity: .7; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.12); }
}

.hero-inner { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; }

.hero h1 {
  max-width: 720px;
  font-family: var(--font-head);
  font-size: clamp(30px, 6.2vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  text-wrap: balance;
}
.hero h1::after {
  content: "";
  display: block;
  width: 70px;
  height: 4px;
  margin: 26px auto 0;
  background: var(--orange);
  transform: scaleX(0);
  animation: line-grow .7s .5s ease forwards;
}
@keyframes line-grow { to { transform: scaleX(1); } }

.hero p {
  max-width: 780px;
  margin-top: 30px;
  font-size: 17px;
  line-height: 1.55;
  color: rgba(255, 255, 255, .9);
}
.hero .btn { margin-top: 34px; }

.hero-scroll {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 26px;
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, .5);
  border-radius: 14px;
  transform: translateX(-50%);
  text-decoration: none;
}
.hero-scroll span {
  position: absolute;
  top: 7px;
  left: 50%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--orange);
  animation: scroll-dot 1.8s ease-in-out infinite;
}
@keyframes scroll-dot {
  0% { top: 7px; opacity: 1; }
  70% { opacity: 1; }
  100% { top: 22px; opacity: 0; }
}

/* ---------- Butonlar ---------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 34px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: .3px;
  line-height: 1.2;
  color: var(--on-dark);
  background: var(--orange-btn);
  border: 0;
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: background-color .2s, transform .2s, box-shadow .2s;
}
.btn:hover {
  background: #b5631a;
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(201, 112, 31, .35);
}
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .65; cursor: wait; transform: none; box-shadow: none; }
.btn .i { transition: transform .25s ease; }
.btn:hover .i { transform: translateX(4px); }
.btn-pill { border-radius: 999px; padding-inline: 36px; }
.btn-rect { border-radius: 6px; padding: 16px 30px; }

.btn-ripple {
  position: absolute;
  z-index: -1;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .35);
  transform: translate(-50%, -50%) scale(0);
  animation: ripple .6s ease-out forwards;
  pointer-events: none;
}
@keyframes ripple { to { transform: translate(-50%, -50%) scale(18); opacity: 0; } }

/* ---------- Kaydırdıkça beliren öğeler ---------- */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s ease;
  transition-delay: calc(var(--d, 0) * .12s);
}
.reveal.reveal-left { transform: translateX(-30px); }
.reveal.reveal-right { transform: translateX(30px); }
.reveal.in-view { opacity: 1; transform: none; }

/* ---------- Dekoratif bulanık şekiller ---------- */

.blob {
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
  opacity: .5;
}
.blob-1 {
  top: -80px;
  right: -120px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, var(--orange-tint), transparent 70%);
}
.blob-2 {
  bottom: -100px;
  left: -140px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(221, 131, 48, .18), transparent 70%);
}
.section { position: relative; overflow: clip; }

/* ---------- Bölümler ---------- */

.section { padding: 64px 0 72px; }
.section-paper { background: var(--paper); }

.section-title { position: relative; z-index: 1; margin-bottom: 44px; }
.section-title h2 {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--ink);
}
.section-title h2::after {
  content: "";
  width: 105px;
  height: 2px;
  background: var(--orange);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform .8s ease .2s;
}
.reveal.in-view .section-title h2::after,
.section-title.reveal.in-view h2::after { transform: scaleX(1); }
.section-title p {
  margin-top: 6px;
  font-family: var(--font-head);
  font-size: 18px;
  color: var(--muted);
}

/* Hakkımızda */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px 56px;
  font-size: 18px;
  line-height: 1.6;
}
.about-lead { color: var(--ink); }
.checklist { margin-top: 26px; display: grid; gap: 14px; }
.checklist li { display: flex; align-items: flex-start; gap: 10px; color: var(--ink); }
.checklist .i {
  margin-top: 3px;
  color: var(--orange);
  transition: transform .3s ease;
}
.checklist li:hover .i { transform: scale(1.2) rotate(-6deg); }
.about-quote {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 30px;
}
.about-grid .btn { margin-top: 22px; }

/* Referanslar: kayan logo şeridi */

.clients {
  padding: 48px 0 56px;
  background: var(--paper);
}
.clients-label {
  margin: 0 0 26px;
  text-align: center;
  font-family: var(--font-nav);
  font-size: 14px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
}
.marquee {
  --gap: 28px;
  display: flex;
  gap: var(--gap);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track {
  display: flex;
  flex: none;
  align-items: center;
  gap: var(--gap);
  min-width: 100%;
  animation: marquee 32s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-100% - var(--gap))); }
}
#clientsGrid img,
#clientsGridClone img {
  width: auto;
  max-width: 130px;
  max-height: 40px;
  flex: none;
}
.client-card {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  height: 72px;
  padding: 0 22px;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 2px 14px rgba(0, 0, 0, .08);
  transition: transform .25s ease, box-shadow .25s ease;
}
.client-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, .14);
}

/* Hizmetler & çözümler kart ızgarası */

.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.service {
  position: relative;
  padding: 28px 28px 32px;
  background: var(--white);
  border-radius: 20px;
  box-shadow: 0 2px 24px rgba(0, 0, 0, .07);
  overflow: hidden;
  transition: transform .35s ease, box-shadow .35s ease;
}
.service::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--orange-tint), transparent 55%);
  opacity: 0;
  transition: opacity .35s ease;
}
.service:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, .12);
}
.service:hover::before { opacity: 1; }
.service-icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  margin-bottom: 20px;
  border-radius: 50%;
  background: var(--orange);
  color: var(--on-dark);
  font-size: 26px;
  transition: transform .4s ease;
}
.service:hover .service-icon { transform: rotate(-8deg) scale(1.08); }
.service h3, .service p { position: relative; }
.service-no {
  position: absolute;
  top: 24px;
  right: 28px;
  font-family: var(--font-head);
  font-size: 40px;
  font-weight: 900;
  line-height: 1;
  color: rgba(0, 0, 0, .06);
}
.service h3 {
  margin-bottom: 10px;
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
}
.service p { font-size: 16px; line-height: 1.6; color: var(--muted); }

.solution {
  overflow: hidden;
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 2px 24px rgba(0, 0, 0, .08);
  transition: transform .4s ease, box-shadow .4s ease;
  transform: perspective(800px) rotateX(0) rotateY(0);
  will-change: transform;
}
.solution.tilt:hover {
  box-shadow: 0 24px 44px rgba(0, 0, 0, .16);
}
.solution-img {
  aspect-ratio: 1.6 / 1;
  overflow: hidden;
  background: linear-gradient(135deg, #16223a, #0b1220);
}
.solution-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.solution:hover .solution-img img { transform: scale(1.08); }
.solution-body { padding: 18px 18px 22px; }
.solution h3 {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.25;
  color: var(--ink);
}
.solution p { margin-top: 6px; font-size: 16px; line-height: 1.55; color: var(--ink); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tags li {
  padding: 6px 18px;
  border-radius: 999px;
  background: var(--orange-tint);
  color: var(--orange-ink);
  font-size: 16px;
  line-height: 1.4;
  transition: background-color .2s, color .2s, transform .2s;
}
.solution:hover .tags li {
  background: var(--orange);
  color: var(--on-dark);
}
.tags li:hover { transform: translateY(-2px); }

/* Basında Biz */

.press-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.press-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 26px 22px;
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 20px rgba(0, 0, 0, .05);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.press-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 34px rgba(0, 0, 0, .1);
  border-color: var(--orange);
}
.press-media {
  display: grid;
  place-items: center;
  height: 128px;
  margin: 0 -26px 4px;
  color: rgba(255, 255, 255, .92);
  font-size: 40px;
  overflow: hidden;
  position: relative;
}
.press-media img {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.press-card:hover .press-media img { transform: scale(1.06); }
.press-media .i { position: relative; z-index: 0; width: 1em; height: 1em; transition: transform .4s ease; }
.press-card:hover .press-media .i { transform: scale(1.12) rotate(-4deg); }
.press-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, .18), transparent 55%);
  pointer-events: none;
}
.press-media-a { background: linear-gradient(135deg, #1b2740, #0c1220); }
.press-media-b { background: linear-gradient(135deg, var(--orange-btn), #a2530c); }
.press-media-c { background: linear-gradient(135deg, #2a3f5f, #16223a); }
.press-media-d { background: linear-gradient(135deg, #3a4a63, #1b2740); }
.press-date {
  align-self: flex-start;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--orange-tint);
  color: var(--orange-ink);
  font-family: var(--font-nav);
  font-size: 13px;
  letter-spacing: .3px;
}
.press-card h3 {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}
.press-card p { font-size: 15px; line-height: 1.55; color: var(--muted); flex: 1; }
.press-source {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  font-family: var(--font-nav);
  font-size: 14px;
  font-weight: 500;
  color: var(--orange-ink);
}
.press-source .i { width: 1em; height: 1em; transition: transform .25s ease; }
.press-card:hover .press-source .i { transform: translateX(4px); }

/* İletişim */

.map {
  margin-bottom: 36px;
  overflow: hidden;
  border-radius: 12px;
  background: var(--paper);
}
.map iframe { display: block; width: 100%; height: 360px; border: 0; }

.contact-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 36px;
  align-items: start;
}
.contact-info { display: grid; gap: 22px; }
.info-item { display: flex; gap: 16px; align-items: flex-start; }
.info-icon {
  display: grid;
  place-items: center;
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--orange);
  color: var(--on-dark);
  font-size: 20px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.info-item:hover .info-icon {
  transform: scale(1.1);
  box-shadow: 0 8px 18px rgba(221, 131, 48, .35);
}
.info-item h3 {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
}
.info-item p { margin-top: 2px; font-size: 16px; }
.info-item a { text-decoration: none; }
.info-item a:hover { text-decoration: underline; }

.contact-form {
  padding: 30px;
  background: var(--white);
  border-radius: 14px;
  box-shadow: 0 2px 24px rgba(0, 0, 0, .07);
}
.contact-form h3 {
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
}
.form-lead { margin: 4px 0 22px; font-size: 16px; color: var(--muted); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; margin-bottom: 6px; font-size: 15px; font-weight: 500; color: var(--ink); }
.field input,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--field-border);
  border-radius: 6px;
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(221, 131, 48, .25);
}
.field .is-invalid { border-color: #c0392b; }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-status {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 16px;
}
.form-status[hidden] { display: none; }
.form-status.is-loading { background: var(--paper); color: var(--ink); }
.form-status.is-ok { background: #e6f4ea; color: #1b5e30; }
.form-status.is-error { background: #fdeceb; color: #9b2c22; }

/* Alt bilgi */

.site-footer {
  padding: 40px 0;
  background: var(--black);
  color: var(--on-dark);
  font-size: 17px;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px 28px;
  text-align: center;
}
.site-footer strong { font-weight: 700; }

.social-block { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.social-label {
  margin: 0;
  font-family: var(--font-nav);
  font-size: 13px;
  letter-spacing: .5px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .6);
}
.social-links { display: flex; gap: 12px; }
.social-links a {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .25);
  color: var(--on-dark);
  transition: background-color .25s, border-color .25s, transform .25s;
}
.social-links a:hover {
  background: var(--orange);
  border-color: var(--orange);
  transform: translateY(-3px);
}
.social-links .i { width: 18px; height: 18px; }

.to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--orange);
  color: var(--on-dark);
  font-size: 20px;
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .25s, transform .25s, visibility .25s, background-color .2s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--orange-btn); }

/* ---------- Duyarlı görünüm ---------- */

@media (max-width: 991px) {
  .cards-3 { grid-template-columns: repeat(2, 1fr); }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .press-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  :root { --header-h: 72px; }

  .nav-toggle { display: inline-flex; }
  .header-nav {
    display: none;
    border-top: 1px solid rgba(255, 255, 255, .12);
    background: rgba(50, 50, 50, .98);
  }
  .header-nav.is-open { display: block; }
  .header-nav ul { flex-direction: column; gap: 0; }
  .header-nav a { padding: 15px 4px; }
  .header-nav a::after { left: 4px; right: auto; bottom: 8px; width: 28px; }
  .site-header { background: rgba(28, 28, 28, .6); }

  .about-grid { grid-template-columns: 1fr; }
  .hero { padding-top: calc(var(--header-h) + 30px); }
}

@media (max-width: 640px) {
  .footer-inner { flex-direction: column; justify-content: center; }

  body { font-size: 16px; }
  .section { padding: 48px 0 56px; }
  .section-title { margin-bottom: 30px; }
  .section-title h2 { font-size: 24px; gap: 12px; }
  .section-title h2::after { width: 56px; }
  .section-title p { font-size: 16px; }
  .about-grid { font-size: 17px; }
  .cards-3 { grid-template-columns: 1fr; }
  .press-grid { grid-template-columns: 1fr; }
  .clients-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .field-row { grid-template-columns: 1fr; }
  .contact-form { padding: 22px 18px; }
  .map iframe { height: 280px; }
  .hero p { font-size: 16px; }
}

@media (max-width: 480px) {
  .hero-scroll { display: none; }
  .marquee { --gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-video { display: none; }
  .hero-overlay { background: rgba(6, 8, 14, .62); }
}