/* ===========================================================
   MEGAN — Taktiki Ayaqqabı İstehsalı
   Design system v2 — Glassmorphism / Qara-Ağ
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Anton&family=Oswald:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Core palette — black canvas, white glass, white accent (no color hue) */
  --c-black: #08090a;
  --c-black-2: #0d0e10;
  --c-white: #ffffff;
  --c-off-white: #f4f5f7;

  --bg: var(--c-black);
  --text: var(--c-off-white);
  --text-muted: rgba(244, 245, 247, 0.66);
  --text-dim: rgba(244, 245, 247, 0.4);

  /* Glass surfaces */
  --glass-1: rgba(255, 255, 255, 0.045);
  --glass-2: rgba(255, 255, 255, 0.08);
  --glass-3: rgba(255, 255, 255, 0.14);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-border-strong: rgba(255, 255, 255, 0.32);
  --glass-blur: blur(22px);
  --glass-blur-lg: blur(36px);
  --glass-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.08);

  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.26);

  /* Accent — white / silver only, no hue */
  --accent: #ffffff;
  --accent-glow: rgba(255, 255, 255, 0.55);
  --accent-glow-soft: rgba(255, 255, 255, 0.22);

  /* Type */
  --f-display: 'Anton', 'Oswald', sans-serif;
  --f-head: 'Oswald', sans-serif;
  --f-body: 'Inter', sans-serif;

  /* Scale */
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.5rem;
  --fs-xl: 2rem;
  --fs-2xl: clamp(2.2rem, 5vw, 3.5rem);
  --fs-3xl: clamp(3rem, 9vw, 6.8rem);

  /* Space (8pt rhythm) */
  --sp-1: 0.5rem;
  --sp-2: 0.75rem;
  --sp-3: 1rem;
  --sp-4: 1.5rem;
  --sp-5: 2rem;
  --sp-6: 3rem;
  --sp-7: 4rem;
  --sp-8: 6rem;
  --sp-9: 9rem;

  --radius-sm: 12px;
  --radius-md: 22px;
  --radius-lg: 30px;
  --container: 1280px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 220ms;
  --dur-med: 460ms;
  --dur-slow: 850ms;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; background: var(--bg); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}
body {
  background: transparent;
  color: var(--text);
  font-family: var(--f-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { font-family: var(--f-head); font-weight: 600; letter-spacing: -0.01em; line-height: 1.12; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}
@media (min-width: 900px) { .container { padding-inline: var(--sp-6); } }

section { position: relative; }

/* ---------- Ambient glass orbs (fixed, decorative) ---------- */
body::before,
body::after {
  content: '';
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  opacity: 0.5;
}
body::before {
  width: min(48vw, 640px);
  height: min(48vw, 640px);
  top: -14vw;
  right: -10vw;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0) 70%);
  animation: orb-float-a 22s ease-in-out infinite;
}
body::after {
  width: min(40vw, 520px);
  height: min(40vw, 520px);
  bottom: -12vw;
  left: -8vw;
  background: radial-gradient(circle at 60% 60%, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0) 70%);
  animation: orb-float-b 26s ease-in-out infinite;
}
@keyframes orb-float-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-4%, 5%) scale(1.08); }
}
@keyframes orb-float-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(5%, -4%) scale(1.1); }
}
@media (prefers-reduced-motion: reduce) {
  body::before, body::after { animation: none; }
}

/* ---------- Utility ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}
.section-head { max-width: 640px; margin-bottom: var(--sp-6); }
.section-head h2 { font-size: var(--fs-2xl); text-transform: uppercase; margin-top: var(--sp-2); }
.section-head p { margin-top: var(--sp-3); color: var(--text-muted); font-size: var(--fs-md); max-width: 52ch; }

/* ---------- Glass surface base ---------- */
.glass {
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* ---------- Buttons ---------- */
.btn {
  --btn-fg: var(--c-black);
  --btn-bg: var(--c-white);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.95rem 1.8rem;
  font-family: var(--f-head);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border-radius: 999px;
  overflow: hidden;
  isolation: isolate;
  min-height: 48px;
  box-shadow: 0 0 0 rgba(255,255,255,0);
  transition: box-shadow var(--dur-med) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.btn:hover { box-shadow: 0 0 32px var(--accent-glow-soft), 0 10px 30px -10px rgba(0,0,0,0.6); transform: translateY(-2px); }
.btn:active { transform: scale(0.97) translateY(0); }
.btn svg { width: 18px; height: 18px; transition: transform var(--dur-med) var(--ease-out); }
.btn:hover svg { transform: translateX(4px); }

.btn-outline {
  --btn-fg: var(--c-white);
  --btn-bg: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.btn-outline:hover { --btn-bg: rgba(255, 255, 255, 0.14); }

.btn-block { width: 100%; justify-content: center; }

.tag {
  display: inline-block;
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  color: var(--text-muted);
}

.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1.is-visible { transition-delay: 90ms; }
.reveal-delay-2.is-visible { transition-delay: 180ms; }
.reveal-delay-3.is-visible { transition-delay: 270ms; }
.reveal-delay-4.is-visible { transition-delay: 360ms; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Custom cursor (desktop only) ---------- */
.cursor-dot {
  position: fixed;
  top: 0; left: 0;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-white);
  box-shadow: 0 0 10px 2px var(--accent-glow);
  pointer-events: none;
  z-index: 999;
  transform: translate(-50%, -50%);
  transition: opacity 200ms;
}
.cursor-ring {
  position: fixed;
  top: 0; left: 0;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.02);
  backdrop-filter: blur(2px);
  pointer-events: none;
  z-index: 998;
  transform: translate(-50%, -50%);
  transition: width 220ms var(--ease-out), height 220ms var(--ease-out), opacity 200ms, border-color 220ms, background 220ms;
}
.cursor-ring.is-active { width: 70px; height: 70px; border-color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.06); }
@media (hover: none), (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---------- Progress bar ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, rgba(255,255,255,0.4), var(--c-white));
  box-shadow: 0 0 12px var(--accent-glow);
  z-index: 1001;
  transition: width 80ms linear;
}

/* ===========================================================
   Header / Nav — floating glass capsule
   =========================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding: var(--sp-4) 0 0;
  transition: padding var(--dur-med) var(--ease-out);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  background: rgba(255, 255, 255, 0.055);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 0.65rem 0.9rem 0.65rem 1.4rem;
  box-shadow: var(--glass-shadow);
  transition: background var(--dur-med) var(--ease-out), border-color var(--dur-med) var(--ease-out), padding var(--dur-med) var(--ease-out);
}
.site-header.is-scrolled .container {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--glass-border-strong);
}
@media (min-width: 900px) {
  .site-header .container { padding: 0.7rem 0.9rem 0.7rem 1.7rem; }
}

.brand {
  font-family: var(--f-display);
  font-size: 1.35rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}
.brand span { color: var(--c-white); text-shadow: 0 0 14px var(--accent-glow); }
.brand-logo { height: 26px; width: auto; display: block; filter: drop-shadow(0 0 10px var(--accent-glow-soft)); }
@media (min-width: 900px) { .brand-logo { height: 30px; } }

.main-nav { display: none; }
@media (min-width: 900px) {
  .main-nav { display: flex; align-items: center; gap: var(--sp-6); }
  .main-nav ul { display: flex; gap: var(--sp-5); }
  .main-nav a {
    position: relative;
    font-family: var(--f-head);
    font-size: var(--fs-sm);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.4rem 0.1rem;
    color: var(--text-muted);
    transition: color var(--dur-fast) var(--ease-out);
  }
  .main-nav a::after {
    content: '';
    position: absolute;
    left: 0; right: 100%;
    bottom: -2px;
    height: 2px;
    background: var(--c-white);
    box-shadow: 0 0 8px var(--accent-glow);
    transition: right var(--dur-med) var(--ease-out);
  }
  .main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--text); }
  .main-nav a:hover::after, .main-nav a[aria-current="page"]::after { right: 0; }
}

.header-cta { display: none; }
@media (min-width: 900px) { .header-cta { display: inline-flex; } }

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
}
@media (min-width: 900px) { .nav-toggle { display: none; } }
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--c-white);
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 480;
  background: rgba(6, 6, 7, 0.72);
  backdrop-filter: var(--glass-blur-lg);
  -webkit-backdrop-filter: var(--glass-blur-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--sp-6) var(--sp-4);
  clip-path: circle(0% at calc(100% - 40px) 40px);
  transition: clip-path 600ms var(--ease-in-out);
  pointer-events: none;
}
.mobile-nav.is-open {
  clip-path: circle(150% at calc(100% - 40px) 40px);
  pointer-events: auto;
}
.mobile-nav ul { display: flex; flex-direction: column; gap: var(--sp-3); }
.mobile-nav a {
  font-family: var(--f-display);
  font-size: clamp(2rem, 10vw, 3rem);
  text-transform: uppercase;
  letter-spacing: 0.01em;
  opacity: 0.4;
  transition: opacity var(--dur-fast);
}
.mobile-nav.is-open a { opacity: 1; }
.mobile-nav a[aria-current="page"] { color: var(--c-white); text-shadow: 0 0 22px var(--accent-glow); }
.mobile-nav .mobile-nav-foot {
  margin-top: var(--sp-7);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  color: var(--text-dim);
  font-size: var(--fs-sm);
}

/* ===========================================================
   Hero (video) — glass panel over footage
   =========================================================== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 560px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--c-black);
}
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-media video, .hero-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(45%) contrast(1.08) brightness(0.55);
}
.hero-media::after {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(6,6,7,0.3) 0%, rgba(6,6,7,0.15) 38%, rgba(6,6,7,0.88) 100%),
    linear-gradient(90deg, rgba(6,6,7,0.55) 0%, transparent 45%);
}
.hero-grain {
  position: absolute; inset: 0;
  z-index: 1;
  opacity: 0.045;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-bottom: var(--sp-7);
}
.hero-glass {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: var(--sp-5);
  max-width: 640px;
}
@media (min-width: 700px) { .hero-glass { padding: var(--sp-6) var(--sp-7); } }

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
  overflow: hidden;
}
.hero-eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--c-white); box-shadow: 0 0 10px var(--accent-glow); animation: pulse-dot 1.8s ease-in-out infinite; }
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

.hero-title {
  font-family: var(--f-display);
  font-size: var(--fs-3xl);
  text-transform: uppercase;
  line-height: 0.92;
  letter-spacing: -0.01em;
  color: var(--c-white);
  text-shadow: 0 0 46px rgba(255,255,255,0.28);
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line span {
  display: inline-block;
  transform: translateY(110%);
  animation: rise-in 900ms var(--ease-out) forwards;
  animation-delay: var(--d, 0ms);
}
@keyframes rise-in { to { transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) {
  .hero-title .line span { animation: none; transform: none; }
}

.hero-sub {
  max-width: 46ch;
  margin-top: var(--sp-4);
  font-size: var(--fs-md);
  color: var(--text-muted);
  opacity: 0;
  animation: fade-up 900ms var(--ease-out) forwards;
  animation-delay: 700ms;
}
@keyframes fade-up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) { .hero-sub { animation: none; opacity: 1; } }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
  opacity: 0;
  animation: fade-up 900ms var(--ease-out) forwards;
  animation-delay: 900ms;
}
@media (prefers-reduced-motion: reduce) { .hero-actions { animation: none; opacity: 1; } }

.hero-meta {
  position: absolute;
  right: var(--sp-4);
  bottom: var(--sp-8);
  z-index: 2;
  display: none;
  text-align: right;
  color: var(--text-dim);
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.05);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: var(--sp-2) var(--sp-3);
}
@media (min-width: 900px) { .hero-meta { display: block; } }

.scroll-cue {
  position: absolute;
  left: var(--sp-4);
  bottom: var(--sp-4);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.scroll-cue .bar {
  width: 1px;
  height: 34px;
  background: var(--border-strong);
  position: relative;
  overflow: hidden;
}
.scroll-cue .bar::after {
  content: '';
  position: absolute;
  top: -100%; left: 0; right: 0; height: 100%;
  background: var(--c-white);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: scroll-cue-move 1.8s ease-in-out infinite;
}
@keyframes scroll-cue-move { 0% { top: -100%; } 60% { top: 100%; } 100% { top: 100%; } }

/* ===========================================================
   Marquee strip — glass bar
   =========================================================== */
.marquee-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  overflow: hidden;
  padding: var(--sp-3) 0;
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 26s linear infinite;
}
.marquee-track span {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--f-display);
  font-size: clamp(1.1rem, 2.4vw, 1.6rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  padding-inline: var(--sp-4);
  white-space: nowrap;
}
.marquee-track span::after { content: '○'; color: var(--c-white); font-size: 0.6em; text-shadow: 0 0 8px var(--accent-glow); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ===========================================================
   About teaser (home)
   =========================================================== */
.about-teaser { padding: var(--sp-9) 0; }
.about-teaser-grid {
  display: grid;
  gap: var(--sp-6);
  align-items: center;
}
@media (min-width: 860px) {
  .about-teaser-grid { grid-template-columns: 0.9fr 1.1fr; gap: var(--sp-8); }
}
.about-teaser-media {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--glass-shadow);
}
.about-teaser-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(55%) contrast(1.05);
  transition: filter var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.about-teaser-media:hover img { filter: grayscale(0%) contrast(1.05); transform: scale(1.04); }
.about-teaser-media .badge {
  position: absolute;
  left: var(--sp-3);
  bottom: var(--sp-3);
  background: rgba(255,255,255,0.1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-strong);
  color: var(--c-white);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-sm);
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}
.about-teaser-media .badge b { font-family: var(--f-display); font-size: 1.4rem; color: var(--c-white); }

.about-teaser-body h2 { font-size: var(--fs-2xl); text-transform: uppercase; margin-top: var(--sp-2); }
.about-teaser-body p { margin-top: var(--sp-4); color: var(--text-muted); max-width: 54ch; font-size: var(--fs-md); }
.about-teaser-body .btn { margin-top: var(--sp-5); }

.about-teaser-grid.is-solo,
.mission-grid.is-solo,
.contact-grid.is-solo {
  grid-template-columns: 1fr;
  max-width: 760px;
  margin-inline: auto;
  text-align: left;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
  margin-top: var(--sp-6);
  padding: var(--sp-4);
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
}
.stat-row .stat b {
  display: block;
  font-family: var(--f-display);
  font-size: var(--fs-xl);
  color: var(--c-white);
}
.stat-row .stat span { font-size: var(--fs-xs); letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-dim); }

/* ===========================================================
   Product cards (shared: home + products page) — glass
   =========================================================== */
.products-section { padding: var(--sp-9) 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.products-section .section-head { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: var(--sp-4); max-width: none; }
.products-section .section-head-text { max-width: 640px; }

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}
@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); } }

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  transform-style: preserve-3d;
  transition: border-color var(--dur-med) var(--ease-out), transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-med) var(--ease-out);
  will-change: transform;
}
.product-card:hover { border-color: var(--glass-border-strong); box-shadow: 0 30px 70px -24px rgba(0,0,0,0.7), 0 0 40px var(--accent-glow-soft); }

.product-card-media { position: relative; aspect-ratio: 5 / 4; overflow: hidden; }
.product-card-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(65%) contrast(1.08);
  transform: scale(1.01);
  transition: transform 700ms var(--ease-out), filter 700ms var(--ease-out);
}
.product-card:hover .product-card-media img { transform: scale(1.12); filter: grayscale(0%) contrast(1.05); }
.product-card-media::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.8) 100%);
}
.product-card-media::before {
  content: '';
  position: absolute; inset: 0;
  z-index: 3;
  background: linear-gradient(115deg, transparent 40%, rgba(255,255,255,0.22) 50%, transparent 60%);
  transform: translateX(-120%);
  transition: transform 800ms var(--ease-out);
  pointer-events: none;
}
.product-card:hover .product-card-media::before { transform: translateX(120%); }
.product-card-index {
  position: absolute;
  top: var(--sp-3); left: var(--sp-3);
  z-index: 2;
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--c-white);
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--glass-border-strong);
  border-radius: 999px;
  padding: 0.25rem 0.6rem;
  backdrop-filter: var(--glass-blur);
}
.product-card-cat {
  position: absolute;
  bottom: var(--sp-3); left: var(--sp-3);
  z-index: 2;
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-white);
  text-shadow: 0 0 10px var(--accent-glow);
}

.product-card-body { padding: var(--sp-4); display: flex; flex-direction: column; gap: var(--sp-2); flex: 1; }
.product-card-body h3 { font-size: var(--fs-lg); text-transform: uppercase; }
.product-card-body p { color: var(--text-muted); font-size: var(--fs-sm); flex: 1; }
.product-card-foot {
  margin-top: var(--sp-2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--border);
}
.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-white);
}
.product-card-link svg { width: 16px; height: 16px; transition: transform var(--dur-fast) var(--ease-out); }
.product-card:hover .product-card-link svg { transform: translateX(4px); }
.product-card-specs { display: flex; gap: 0.4rem; }
.product-card-specs span { width: 6px; height: 6px; border-radius: 50%; background: var(--border-strong); }
.product-card[role="button"] { cursor: pointer; }
.product-card[role="button"]:focus-visible { outline: 2px solid var(--c-white); outline-offset: 3px; }

/* ---------- Product lightbox (image gallery modal) ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-med) var(--ease-out);
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 4, 5, 0.78);
  backdrop-filter: var(--glass-blur-lg);
  -webkit-backdrop-filter: var(--glass-blur-lg);
}
.lightbox-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 880px;
  max-height: 88vh;
  overflow-y: auto;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: var(--sp-4);
  transform: translateY(24px) scale(0.98);
  transition: transform var(--dur-med) var(--ease-out);
}
.lightbox.is-open .lightbox-panel { transform: translateY(0) scale(1); }
@media (min-width: 700px) { .lightbox-panel { padding: var(--sp-5); } }

.lightbox-close {
  position: absolute;
  top: var(--sp-3); right: var(--sp-3);
  z-index: 2;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--glass-border-strong);
  color: var(--c-white);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-fast), transform var(--dur-fast);
}
.lightbox-close:hover { background: var(--c-white); color: var(--c-black); transform: rotate(90deg); }
.lightbox-close svg { width: 18px; height: 18px; }

.lightbox-title { font-size: var(--fs-lg); text-transform: uppercase; padding-right: var(--sp-6); }

.lightbox-stage {
  position: relative;
  margin-top: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.lightbox-stage-frame {
  flex: 1;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
}
.lightbox-image { width: 100%; height: 100%; object-fit: cover; }
.lightbox-nav {
  flex-shrink: 0;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border-strong);
  color: var(--c-white);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-fast), transform var(--dur-fast);
}
.lightbox-nav:hover { background: var(--c-white); color: var(--c-black); }
.lightbox-nav svg { width: 18px; height: 18px; }

.lightbox-thumbs { display: flex; gap: var(--sp-2); margin-top: var(--sp-4); flex-wrap: wrap; }
.lightbox-thumb {
  width: 64px; height: 64px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid var(--glass-border);
  opacity: 0.55;
  transition: opacity var(--dur-fast), border-color var(--dur-fast);
  flex-shrink: 0;
}
.lightbox-thumb img { width: 100%; height: 100%; object-fit: cover; }
.lightbox-thumb:hover { opacity: 0.85; }
.lightbox-thumb.is-active { opacity: 1; border-color: var(--c-white); }

.section-cta { display: flex; justify-content: center; margin-top: var(--sp-7); }

/* ===========================================================
   Page hero (inner pages) — glass panel
   =========================================================== */
.page-hero {
  padding: calc(var(--sp-9) + 3rem) 0 var(--sp-7);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero-inner {
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: var(--sp-5);
}
@media (min-width: 700px) { .page-hero-inner { padding: var(--sp-7); } }
.page-hero-kicker { display: flex; align-items: center; gap: var(--sp-2); font-family: var(--f-head); font-size: var(--fs-xs); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); margin-bottom: var(--sp-3); }
.page-hero-kicker a { color: var(--text-muted); transition: color var(--dur-fast); }
.page-hero-kicker a:hover { color: var(--c-white); }
.page-hero h1 { font-family: var(--f-display); font-size: var(--fs-3xl); text-transform: uppercase; line-height: 0.94; max-width: 16ch; text-shadow: 0 0 40px rgba(255,255,255,0.16); }
.page-hero .lead { margin-top: var(--sp-4); max-width: 60ch; color: var(--text-muted); font-size: var(--fs-md); }
.page-hero-num {
  position: absolute;
  right: -2vw; top: -4vw;
  font-family: var(--f-display);
  font-size: min(28vw, 320px);
  color: transparent;
  -webkit-text-stroke: 1px var(--border);
  line-height: 1;
  z-index: 0;
  user-select: none;
  pointer-events: none;
}

/* ===========================================================
   About page specifics
   =========================================================== */
.mission {
  padding: var(--sp-9) 0;
}
.mission-grid {
  display: grid;
  gap: var(--sp-6);
}
@media (min-width: 860px) { .mission-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-8); align-items: start; } }
.mission-media { position: relative; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border); aspect-ratio: 4/3; box-shadow: var(--glass-shadow); }
.mission-media img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(50%) contrast(1.05); }
.mission-body p { color: var(--text-muted); font-size: var(--fs-md); margin-top: var(--sp-3); max-width: 58ch; }
.mission-body p + p { margin-top: var(--sp-3); }

.values-section { padding: var(--sp-9) 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.values-grid { display: grid; gap: var(--sp-4); }
@media (min-width: 700px) { .values-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .values-grid { grid-template-columns: repeat(4, 1fr); } }
.value-card {
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--sp-5);
  display: flex; flex-direction: column; gap: var(--sp-3);
  box-shadow: var(--glass-shadow);
  transition: background var(--dur-med) var(--ease-out), transform var(--dur-fast) var(--ease-out), border-color var(--dur-med);
}
.value-card:hover { background: var(--glass-2); transform: translateY(-6px); border-color: var(--glass-border-strong); }
.value-card .num { font-family: var(--f-display); font-size: var(--fs-lg); color: var(--c-white); text-shadow: 0 0 16px var(--accent-glow); }
.value-card h3 { font-size: var(--fs-md); text-transform: uppercase; }
.value-card p { color: var(--text-muted); font-size: var(--fs-sm); }

.timeline { padding: var(--sp-9) 0; }
.timeline-list { position: relative; margin-top: var(--sp-6); }
.timeline-list::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 1px; background: var(--border); }
.timeline-item { position: relative; padding: 0 0 var(--sp-6) var(--sp-6); }
.timeline-item::before {
  content: '';
  position: absolute; left: 0; top: 4px;
  width: 17px; height: 17px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(6px);
  border: 2px solid var(--c-white);
  box-shadow: 0 0 14px var(--accent-glow);
}
.timeline-item .yr { font-family: var(--f-head); font-size: var(--fs-xs); letter-spacing: 0.14em; color: var(--c-white); text-transform: uppercase; }
.timeline-item h3 { margin-top: 0.3rem; font-size: var(--fs-lg); text-transform: uppercase; }
.timeline-item p { margin-top: 0.4rem; color: var(--text-muted); max-width: 60ch; }

.counter-strip { padding: var(--sp-8) 0; border-top: 1px solid var(--border); }
.counter-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--sp-4); }
@media (min-width: 760px) { .counter-grid { grid-template-columns: repeat(4,1fr); } }
.counter-item {
  text-align: center;
  padding: var(--sp-5) var(--sp-3);
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
}
.counter-item .count { font-family: var(--f-display); font-size: clamp(2.4rem, 6vw, 4rem); color: var(--c-white); text-shadow: 0 0 30px rgba(255,255,255,0.25); }
.counter-item .count::after { content: attr(data-suffix); color: var(--c-white); }
.counter-item .label { margin-top: var(--sp-1); font-size: var(--fs-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); }

/* ===========================================================
   Products page specifics
   =========================================================== */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  padding: var(--sp-5) 0;
  border-bottom: 1px solid var(--border);
}
.filter-btn {
  padding: 0.55rem 1.1rem;
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-strong);
  border-radius: 999px;
  font-family: var(--f-head);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: all var(--dur-fast) var(--ease-out);
}
.filter-btn:hover { color: var(--c-white); border-color: var(--c-white); box-shadow: 0 0 20px var(--accent-glow-soft); }
.filter-btn.is-active { background: var(--c-white); color: var(--c-black); border-color: var(--c-white); }

.products-grid-section { padding: var(--sp-7) 0 var(--sp-9); }

.process-strip { padding: var(--sp-9) 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.process-grid { display: grid; gap: var(--sp-4); margin-top: var(--sp-6); }
@media (min-width: 760px) { .process-grid { grid-template-columns: repeat(4, 1fr); } }
.process-step {
  position: relative;
  padding: var(--sp-5);
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-med);
}
.process-step:hover { transform: translateY(-6px); border-color: var(--glass-border-strong); }
.process-step .num { font-family: var(--f-display); font-size: var(--fs-xl); color: var(--border-strong); }
.process-step h3 { margin-top: var(--sp-2); font-size: var(--fs-md); text-transform: uppercase; }
.process-step p { margin-top: 0.4rem; color: var(--text-muted); font-size: var(--fs-sm); }

/* ===========================================================
   Contact page
   =========================================================== */
.contact-section { padding: var(--sp-9) 0; }
.contact-grid { display: grid; gap: var(--sp-7); }
@media (min-width: 900px) { .contact-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-8); align-items: start; } }

.contact-info-list { display: flex; flex-direction: column; gap: var(--sp-4); margin-top: var(--sp-5); }
.contact-info-item {
  display: flex; gap: var(--sp-3); align-items: flex-start;
  padding: var(--sp-3);
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
}
.contact-info-item .icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--c-white);
}
.contact-info-item .icon svg { width: 20px; height: 20px; }
.contact-info-item h3 { font-size: var(--fs-sm); text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-dim); }
.contact-info-item p, .contact-info-item a { margin-top: 0.25rem; font-size: var(--fs-md); color: var(--text); }
.contact-info-item a:hover { color: var(--c-white); text-shadow: 0 0 10px var(--accent-glow); }

.social-row { display: flex; gap: var(--sp-2); margin-top: var(--sp-6); }
.social-row a {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-strong);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--dur-fast) var(--ease-out);
}
.social-row a:hover { background: var(--c-white); color: var(--c-black); transform: translateY(-3px); box-shadow: 0 8px 24px -8px var(--accent-glow); }
.social-row svg { width: 18px; height: 18px; }

.contact-form {
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  box-shadow: var(--glass-shadow);
}
@media (min-width: 640px) { .contact-form { padding: var(--sp-6); } }
.form-row { display: grid; gap: var(--sp-4); }
@media (min-width: 560px) { .form-row.cols-2 { grid-template-columns: 1fr 1fr; } }
.field { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: var(--sp-4); }
.field label { font-size: var(--fs-xs); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dim); }
.field input, .field textarea, .field select {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--text);
  min-height: 48px;
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast);
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--c-white);
  background: rgba(255,255,255,0.07);
  box-shadow: 0 0 0 4px var(--accent-glow-soft);
}
.field-hint { font-size: var(--fs-xs); color: var(--text-dim); }
.form-note { margin-top: var(--sp-3); font-size: var(--fs-xs); color: var(--text-dim); }
.form-status { margin-top: var(--sp-3); font-size: var(--fs-sm); display: none; padding: var(--sp-2) var(--sp-3); border-radius: var(--radius-sm); }
.form-status.is-visible { display: block; }
.form-status.ok { background: rgba(255,255,255,0.08); color: var(--c-white); border: 1px solid var(--glass-border-strong); }

.map-block {
  margin-top: var(--sp-7);
  background: var(--glass-1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 21/7;
  position: relative;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.05) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.05) 40px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.map-block .pin {
  display: flex; flex-direction: column; align-items: center; gap: var(--sp-2);
  color: var(--text-muted);
  font-family: var(--f-head);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: var(--fs-sm);
}
.map-block .pin svg { width: 30px; height: 30px; color: var(--c-white); filter: drop-shadow(0 0 12px var(--accent-glow)); }

/* ===========================================================
   Footer — solid black, white text (explicit brief)
   =========================================================== */
.site-footer {
  background: var(--c-black);
  border-top: 1px solid var(--border);
  padding: var(--sp-8) 0 var(--sp-5);
  color: var(--c-white);
}
.footer-top { display: grid; gap: var(--sp-7); }
@media (min-width: 860px) { .footer-top { grid-template-columns: 1.4fr 0.8fr 1fr; gap: var(--sp-7); } }

.footer-logo {
  display: block;
  height: 34px;
  width: auto;
  filter: drop-shadow(0 0 14px var(--accent-glow-soft));
}
.footer-brand p { margin-top: var(--sp-4); color: var(--text-dim); max-width: 34ch; font-size: var(--fs-sm); }

.footer-col h4 { font-size: var(--fs-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-dim); margin-bottom: var(--sp-3); }
.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a { color: var(--c-white); font-size: var(--fs-sm); transition: color var(--dur-fast); position: relative; }
.footer-col a:hover { text-shadow: 0 0 10px var(--accent-glow); }

.footer-social { display: flex; gap: var(--sp-2); margin-top: var(--sp-4); }
.footer-social a {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border-strong);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--dur-fast) var(--ease-out);
}
.footer-social a:hover { background: var(--c-white); color: var(--c-black); box-shadow: 0 0 24px var(--accent-glow-soft); }
.footer-social svg { width: 16px; height: 16px; }

.footer-bottom {
  margin-top: var(--sp-8);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
  justify-content: space-between;
  color: var(--text-dim);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
}
.footer-bottom-links { display: flex; gap: var(--sp-4); }
.footer-bottom-links a:hover { color: var(--c-white); }

.back-to-top {
  position: fixed;
  right: var(--sp-4);
  bottom: var(--sp-4);
  z-index: 400;
  width: 50px; height: 50px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-strong);
  color: var(--c-white);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(12px) scale(0.9);
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), background var(--dur-fast), box-shadow var(--dur-fast);
}
.back-to-top.is-visible { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.back-to-top:hover { background: var(--c-white); color: var(--c-black); box-shadow: 0 8px 30px -6px var(--accent-glow); }
.back-to-top svg { width: 20px; height: 20px; }