/* ===== XCARBONTECHNIK — style.css ===== */

:root {
  --red:        #CC1010;
  --red-dark:   #9A0B0B;
  --red-light:  #FF3A3A;
  --carbon:     #111418;
  --carbon-mid: #1E2329;
  --carbon-soft:#2C343D;
  --white:      #FFFFFF;
  --off-white:  #F5F5F5;
  --grey:       #9AA3AF;
  --hex-pattern: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='56' height='100'%3E%3Cpath d='M28 66L0 50V18L28 2l28 16v32L28 66zM28 100L0 84V52l28-16 28 16v32L28 100z' fill='none' stroke='rgba(255,255,255,0.04)' stroke-width='1'/%3E%3C/svg%3E");
  --font: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--carbon);
  line-height: 1.65;
  overflow-x: hidden;
}

/* ── TYPOGRAPHY ── */
h1, h2, h3, h4 { line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; }
p { color: #3D4552; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--carbon); }
::-webkit-scrollbar-thumb { background: var(--red); border-radius: 3px; }

/* ══════════════════════════════════════
   NAV
══════════════════════════════════════ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  height: 68px;
  background: rgba(17, 20, 24, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo svg { width: 38px; height: 38px; flex-shrink: 0; }

.nav-logo-text {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--white);
}
.nav-logo-text span { color: var(--red); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.72);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--red-light); }

.nav-cta {
  background: var(--red);
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: 6px;
  transition: background var(--transition), transform var(--transition) !important;
}
.nav-cta:hover { background: var(--red-dark) !important; transform: translateY(-1px); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  background: var(--carbon);
  background-image: var(--hex-pattern);
  position: relative;
  overflow: hidden;
  padding-top: 68px;
}

#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(204,16,16,0.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  padding: 80px 5% 80px 8%;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(204,16,16,0.15);
  border: 1px solid rgba(204,16,16,0.4);
  color: var(--red-light);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--red-light);
  animation: pulse-dot 1.8s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.hero-content h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  color: var(--white);
  margin-bottom: 20px;
}
.hero-content h1 em {
  color: var(--red);
  font-style: normal;
}

.hero-content p {
  color: rgba(255,255,255,0.65);
  font-size: 1.05rem;
  max-width: 480px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--red);
  color: var(--white);
  box-shadow: 0 4px 24px rgba(204,16,16,0.4);
}
.btn-primary:hover {
  background: var(--red-dark);
  box-shadow: 0 6px 32px rgba(204,16,16,0.55);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.05);
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.stat { display: flex; flex-direction: column; }
.stat-num {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}
.stat-num span { color: var(--red); }
.stat-label { font-size: 0.75rem; color: var(--grey); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.08em; }

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 600px;
  z-index: 2;
}

.hero-glow {
  position: absolute;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(204,16,16,0.25) 0%, transparent 70%);
  pointer-events: none;
}

.hero-img-wrap {
  position: relative;
  width: 360px;
  cursor: pointer;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.6));
  transition: transform var(--transition), filter var(--transition);
}
.hero-img-wrap:hover {
  transform: translateY(-6px) scale(1.02);
  filter: drop-shadow(0 40px 80px rgba(204,16,16,0.35));
}
.hero-img-wrap img {
  width: 100%;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.hero-img-hint {
  position: absolute;
  bottom: -28px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 5px;
}

/* ══════════════════════════════════════
   SECTION COMMONS
══════════════════════════════════════ */
section { padding: 100px 8%; }

.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.8rem);
  color: var(--carbon);
  margin-bottom: 16px;
}
.section-sub {
  font-size: 1rem;
  color: #556070;
  max-width: 560px;
  margin-bottom: 60px;
}

.section-dark { background: var(--carbon); }
.section-dark .section-title { color: var(--white); }
.section-dark .section-sub { color: var(--grey); }
.section-dark p { color: var(--grey); }

/* ══════════════════════════════════════
   FEATURES
══════════════════════════════════════ */
#features { background: var(--off-white); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border-radius: 16px;
  padding: 36px 28px;
  border: 1px solid rgba(0,0,0,0.06);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.12);
  border-color: rgba(204,16,16,0.15);
}

.feature-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: rgba(204,16,16,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-icon svg { width: 26px; height: 26px; color: var(--red); }

.feature-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  color: var(--carbon);
}
.feature-card p { font-size: 0.9rem; line-height: 1.6; }

/* ══════════════════════════════════════
   GALLERY
══════════════════════════════════════ */
#gallery { background: var(--white); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 16px;
}

.gallery-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  background: var(--carbon-mid);
}

.gallery-item:first-child {
  grid-row: 1 / 3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(.4,0,.2,1), filter 0.5s;
  image-rendering: -webkit-optimize-contrast;
  filter: brightness(0.95) contrast(1.05) saturate(1.1);
  min-height: 200px;
}

.gallery-item:first-child img { min-height: 420px; }

.gallery-item:hover img { transform: scale(1.05); filter: brightness(1) contrast(1.08) saturate(1.15); }

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(17,20,24,0.7) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 20px;
}
.gallery-item:hover .gallery-overlay { opacity: 1; }

.gallery-overlay-label {
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}
.gallery-zoom-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}
.gallery-zoom-icon svg { width: 16px; height: 16px; color: white; }

/* ══════════════════════════════════════
   CROSS-SECTION ILLUSTRATION
══════════════════════════════════════ */
#cutaway {
  background: var(--carbon);
  background-image: var(--hex-pattern);
}

.cutaway-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.cutaway-svg-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.cutaway-svg-wrap svg {
  width: 100%;
  max-width: 380px;
  filter: drop-shadow(0 20px 60px rgba(204,16,16,0.25));
}

.layer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 28px;
}

.layer-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.layer-swatch {
  width: 14px; height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
  margin-top: 4px;
}

.layer-item h4 { color: var(--white); font-size: 0.95rem; margin-bottom: 3px; }
.layer-item p { font-size: 0.83rem; line-height: 1.55; }

/* ══════════════════════════════════════
   SPECS / RANGE
══════════════════════════════════════ */
#specs { background: var(--off-white); }

.specs-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
}
.spec-table tr { border-bottom: 1px solid rgba(0,0,0,0.07); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table td {
  padding: 14px 0;
  font-size: 0.92rem;
}
.spec-table td:first-child { color: var(--grey); font-weight: 500; width: 45%; }
.spec-table td:last-child { font-weight: 600; color: var(--carbon); }

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}
.cert-badge {
  background: var(--white);
  border: 1.5px solid rgba(204,16,16,0.25);
  color: var(--red-dark);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.volume-range {
  background: var(--white);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid rgba(0,0,0,0.07);
}
.volume-range h3 { margin-bottom: 20px; color: var(--carbon); font-size: 1.1rem; }

.range-bar-wrap { margin-bottom: 28px; }
.range-bar {
  height: 10px;
  background: var(--off-white);
  border-radius: 100px;
  border: 1px solid rgba(0,0,0,0.08);
  position: relative;
  overflow: hidden;
}
.range-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--red-dark), var(--red), var(--red-light));
  border-radius: 100px;
  width: 0;
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
}
.range-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--grey);
}

.use-case-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.use-case-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--carbon);
}
.use-case-list li::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--red);
  flex-shrink: 0;
}

/* ══════════════════════════════════════
   CONTACT
══════════════════════════════════════ */
#contact {
  background: var(--carbon);
  background-image: var(--hex-pattern);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.contact-info { color: var(--white); }
.contact-info .section-title { color: var(--white); }

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
}
.contact-detail-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(204,16,16,0.15);
  border: 1px solid rgba(204,16,16,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-detail-icon svg { width: 18px; height: 18px; color: var(--red-light); }
.contact-detail-text { display: flex; flex-direction: column; }
.contact-detail-text strong { color: var(--white); font-size: 0.85rem; margin-bottom: 2px; }
.contact-detail-text span { color: var(--grey); font-size: 0.88rem; }

.whatsapp-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #25D366;
  color: var(--white);
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  margin-top: 8px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 24px rgba(37,211,102,0.3);
}
.whatsapp-btn:hover {
  background: #1DA851;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(37,211,102,0.45);
}
.whatsapp-btn svg { width: 22px; height: 22px; }

.contact-form {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 40px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 18px;
}
.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.05em;
}
.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--white);
  font-size: 0.9rem;
  font-family: var(--font);
  transition: border-color var(--transition), background var(--transition);
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.3); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--red);
  background: rgba(255,255,255,0.1);
}
.form-group select option { background: var(--carbon-mid); }
.form-group textarea { resize: vertical; min-height: 110px; }

.form-submit {
  width: 100%;
  background: var(--red);
  color: var(--white);
  border: none;
  border-radius: 8px;
  padding: 15px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(204,16,16,0.35);
}
.form-submit:hover {
  background: var(--red-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(204,16,16,0.5);
}

.form-note {
  margin-top: 12px;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  text-align: center;
}

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
footer {
  background: #0A0D10;
  padding: 36px 8%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand svg { width: 28px; height: 28px; }
.footer-brand span { color: rgba(255,255,255,0.55); font-size: 0.85rem; }
.footer-brand strong { color: var(--white); }

.footer-copy { color: rgba(255,255,255,0.3); font-size: 0.78rem; }

/* ══════════════════════════════════════
   LIGHTBOX
══════════════════════════════════════ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  padding: 24px;
}
.lightbox.active {
  opacity: 1;
  pointer-events: all;
}
.lightbox-inner {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(.4,0,.2,1);
}
.lightbox.active .lightbox-inner { transform: scale(1); }
.lightbox-inner img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 8px;
  filter: brightness(1.05) contrast(1.08) saturate(1.12);
  box-shadow: 0 30px 80px rgba(0,0,0,0.7);
}
.lightbox-close {
  position: absolute;
  top: -14px; right: -14px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--red);
  border: none;
  color: white;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
}
.lightbox-close:hover { background: var(--red-dark); transform: scale(1.1); }

.lightbox-caption {
  text-align: center;
  margin-top: 14px;
  color: rgba(255,255,255,0.6);
  font-size: 0.82rem;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: none;
  color: white;
  width: 44px; height: 44px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  backdrop-filter: blur(6px);
}
.lightbox-nav:hover { background: rgba(204,16,16,0.6); }
.lightbox-prev { left: -56px; }
.lightbox-next { right: -56px; }

/* ══════════════════════════════════════
   TOAST
══════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 28px; right: 28px;
  background: var(--carbon-mid);
  color: var(--white);
  padding: 14px 22px;
  border-radius: 10px;
  border-left: 3px solid var(--red);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  font-size: 0.88rem;
  z-index: 9998;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ══════════════════════════════════════
   ANIMATIONS / REVEAL
══════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* stagger children */
.stagger > * { opacity: 0; transform: translateY(20px); transition: opacity 0.5s ease, transform 0.5s ease; }
.stagger.visible > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0s; }
.stagger.visible > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.08s; }
.stagger.visible > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.16s; }
.stagger.visible > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.24s; }
.stagger.visible > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.32s; }
.stagger.visible > *:nth-child(6) { opacity: 1; transform: none; transition-delay: 0.40s; }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 1024px) {
  .cutaway-layout,
  .specs-layout,
  .contact-layout { grid-template-columns: 1fr; gap: 48px; }

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }
  .gallery-item:first-child { grid-row: auto; }
}

@media (max-width: 768px) {
  section { padding: 72px 5%; }

  #hero { grid-template-columns: 1fr; min-height: auto; padding-bottom: 60px; }
  .hero-visual { min-height: 340px; }
  .hero-img-wrap { width: 260px; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }

  .nav-links { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--carbon-mid); padding: 20px 5%; gap: 16px; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }

  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item:first-child img { min-height: 300px; }

  .form-row { grid-template-columns: 1fr; }

  .lightbox-prev { left: -8px; }
  .lightbox-next { right: -8px; }

  footer { flex-direction: column; text-align: center; }
}