/* =============================================
   MacroKinetic — style.css
   Industrial AI Website — Professional Dark Theme
   ============================================= */

/* ---- Custom Properties ---- */
:root {
  --bg-base:       #050a14;
  --bg-raised:     #080f1e;
  --bg-card:       #0c1628;
  --bg-card-hover: #0f1e38;
  --border:        #1a2d45;
  --border-mid:    #243a56;

  --accent:        #0ea5e9;
  --accent-light:  #38bdf8;
  --accent-dim:    #0369a1;
  --accent-purple: #7c3aed;

  --text-primary:  #f0f6ff;
  --text-secondary:#8fa8c4;
  --text-muted:    #4e6680;
  --text-label:    #38bdf8;

  --font-head: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --section-py: 100px;
  --max-w:      1200px;
  --r:          8px;
  --r-lg:       16px;
  --ease:       0.25s ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; }

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--text-primary);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1rem, 2vw, 1.35rem); font-weight: 600; }
p  { color: var(--text-secondary); line-height: 1.75; }

/* ---- Layout ---- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
section { padding: var(--section-py) 0; }

/* ---- Section Labels ---- */
.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-label);
  margin-bottom: 14px;
}
.section-header { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.section-intro   { margin-top: 14px; font-size: 1.05rem; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 28px;
  border-radius: var(--r);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
  transition: all var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(14,165,233,0.35);
}
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-mid);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: rgba(14,165,233,0.05);
}
.btn-full { width: 100%; justify-content: center; }

/* ---- Fade-in animations ---- */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ==============================================
   NAVIGATION
   ============================================== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--ease), padding var(--ease), border-color var(--ease);
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(5,10,20,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 13px 0;
  border-bottom-color: var(--border);
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

/* Logo */
.nav-logo { display: flex; align-items: center; }

.nav-logo-img {
  height: 38px;
  width: auto;
  display: block;
  /* White-to-grey logo — optimised for dark backgrounds */
  filter: drop-shadow(0 1px 6px rgba(255,255,255,0.07));
}

/* Nav links */
.nav-links {
  display: flex; align-items: center; gap: 4px;
}
.nav-link {
  padding: 8px 13px;
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--r);
  transition: color var(--ease), background var(--ease);
}
.nav-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.nav-link.active { color: var(--accent-light); }

.nav-cta {
  background: var(--accent) !important;
  color: #fff !important;
  margin-left: 8px;
  padding: 8px 18px !important;
}
.nav-cta:hover {
  background: var(--accent-light) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(14,165,233,0.3);
}

/* Hamburger */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--text-primary); border-radius: 2px;
  transition: all var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==============================================
   HERO
   ============================================== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg-img { width: 100%; height: 100%; object-fit: cover; object-position: center 40%; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    rgba(5,10,20,0.90) 0%,
    rgba(5,10,20,0.65) 55%,
    rgba(10,6,28,0.85) 100%
  );
}
.hero-grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(14,165,233,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,165,233,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
}

.hero-content {
  position: relative; z-index: 1;
  padding-top: 90px;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex; align-items: center;
  padding: 6px 14px;
  border: 1px solid rgba(56,189,248,0.3);
  border-radius: 100px;
  font-size: 0.72rem; font-weight: 500; letter-spacing: 0.09em;
  color: var(--accent-light);
  background: rgba(14,165,233,0.07);
  margin-bottom: 28px;
}

.hero-title { margin-bottom: 22px; }
.hero-title-accent { color: var(--accent-light); }

.hero-description {
  font-size: 1.1rem;
  color: rgba(240,246,255,0.72);
  max-width: 580px;
  margin-bottom: 40px;
  line-height: 1.75;
}

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

.hero-scroll-hint {
  position: absolute; bottom: 40px; left: 50%;
  transform: translateX(-50%); z-index: 1;
}
.scroll-line {
  width: 1px; height: 56px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  margin: 0 auto;
  animation: scrollPulse 2.2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.25; }
  50%       { opacity: 0.9; }
}

/* ==============================================
   ABOUT
   ============================================== */
#about { background: var(--bg-raised); }

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

.about-content .section-label { margin-bottom: 14px; }
.about-content h2 { margin-bottom: 22px; }
.about-content p  { margin-bottom: 14px; }

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.stat-number {
  font-family: var(--font-head);
  font-size: 1.9rem; font-weight: 700;
  color: var(--accent-light);
  margin-bottom: 4px;
}
.stat-desc { font-size: 0.78rem; color: var(--text-muted); line-height: 1.4; }

.about-visual { position: relative; }
.about-visual-frame {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}
.about-visual-frame img { width: 100%; height: 380px; object-fit: cover; }

.about-visual-tag {
  position: absolute; bottom: -18px; right: -18px;
  background: var(--bg-card);
  border: 1px solid var(--border-mid);
  border-radius: var(--r);
  padding: 10px 16px;
  font-size: 0.78rem; color: var(--text-secondary);
  display: flex; align-items: center; gap: 8px;
}
.tag-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  animation: tagPulse 2s ease-in-out infinite;
}
@keyframes tagPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(14,165,233,0.4); }
  50%       { opacity: 0.7; box-shadow: 0 0 0 5px rgba(14,165,233,0); }
}

/* ==============================================
   SOLUTIONS
   ============================================== */
#solutions { background: var(--bg-base); }

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 32px 28px;
  transition: background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
}
.solution-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-mid);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
.solution-icon {
  width: 42px; height: 42px;
  color: var(--accent);
  margin-bottom: 20px;
}
.solution-icon svg { width: 100%; height: 100%; }
.solution-card h3 { margin-bottom: 10px; }
.solution-card p  { font-size: 0.9rem; }

/* ==============================================
   USE CASES
   ============================================== */
#use-cases { background: var(--bg-raised); }

.use-case {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 88px;
}
.use-case:last-child { margin-bottom: 0; }

/* Reverse layout via RTL direction trick */
.use-case-reverse { direction: rtl; }
.use-case-reverse > * { direction: ltr; }

.use-case-media { position: relative; }
.media-frame {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  background: var(--bg-card);
  line-height: 0;
}
.media-frame img { width: 100%; height: auto; }

.media-badge {
  position: absolute; top: 14px; left: 14px;
  background: rgba(5,10,20,0.82);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-mid);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--accent-light);
}

.uc-label {
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-label);
  margin-bottom: 10px;
}
.use-case-content h3 { font-size: 1.45rem; margin-bottom: 14px; }
.use-case-content > p { margin-bottom: 22px; }

.uc-outcomes { display: flex; flex-direction: column; gap: 10px; }
.uc-outcomes li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.88rem; color: var(--text-secondary);
}
.uc-outcomes li::before {
  content: '';
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
  margin-top: 8px; flex-shrink: 0;
}

/* ==============================================
   SECTORS
   ============================================== */
#sectors { background: var(--bg-base); }

.sectors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.sector-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px 22px;
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease), opacity var(--ease);
}
.sector-card.sector-active {
  border-color: rgba(14,165,233,0.4);
  background: rgba(14,165,233,0.06);
}
.sector-card.sector-soon { opacity: 0.72; }
.sector-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
  opacity: 1;
}
.sector-icon { font-size: 1.9rem; margin-bottom: 14px; }
.sector-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.sector-card p  { font-size: 0.84rem; margin-bottom: 18px; }

.sector-status {
  display: inline-block;
  padding: 4px 10px; border-radius: 100px;
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.07em; text-transform: uppercase;
}
.status-live    { background: rgba(14,165,233,0.14); color: var(--accent-light); }
.status-soon    { background: rgba(255,255,255,0.05); color: var(--text-muted); }
.status-explore { background: rgba(124,58,237,0.15); color: #a78bfa; }

/* ==============================================
   WHY MACROKINETIC
   ============================================== */
#why { background: var(--bg-raised); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-bottom: 64px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.why-card {
  background: var(--bg-card);
  padding: 34px 30px;
  transition: background var(--ease);
}
.why-card:hover { background: var(--bg-card-hover); }
.why-num {
  font-family: var(--font-head);
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.12em; color: var(--accent);
  margin-bottom: 14px;
}
.why-card h3 { font-size: 0.95rem; margin-bottom: 8px; }
.why-card p  { font-size: 0.875rem; }

/* Challenge block */
.challenge-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 44px 48px;
}
.challenge-header { margin-bottom: 28px; }
.challenge-header h3 { font-size: 1.3rem; margin-top: 8px; }

.challenge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.challenge-item {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.875rem; color: var(--text-secondary);
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 14px 16px;
  line-height: 1.5;
}
.challenge-item::before {
  content: '—';
  color: var(--accent-dim);
  font-weight: 700; flex-shrink: 0;
}

/* ==============================================
   CONTACT
   ============================================== */
#contact { background: var(--bg-base); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.contact-info .section-label { margin-bottom: 14px; }
.contact-info h2 { margin-bottom: 18px; }
.contact-info > p { margin-bottom: 12px; }

.contact-details { margin-top: 36px; display: flex; flex-direction: column; gap: 14px; }

.contact-item {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: border-color var(--ease), background var(--ease);
}
a.contact-item:hover {
  border-color: var(--accent);
  background: rgba(14,165,233,0.05);
}
.contact-icon { width: 34px; height: 34px; color: var(--accent); flex-shrink: 0; }
.contact-icon svg { width: 100%; height: 100%; }
.contact-label {
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 2px;
}
.contact-value { font-weight: 500; color: var(--text-primary); font-size: 0.92rem; }

/* Form */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 38px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 0.78rem; font-weight: 600;
  color: var(--text-secondary); margin-bottom: 7px; letter-spacing: 0.03em;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 11px 15px;
  color: var(--text-primary);
  font-family: var(--font-body); font-size: 0.88rem;
  transition: border-color var(--ease), box-shadow var(--ease);
  outline: none; appearance: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group textarea { resize: vertical; min-height: 110px; }

/* Form status — hidden until JS sets a message */
.form-status {
  margin-top: 14px;
  padding: 0;
  border-radius: var(--r);
  font-size: 0.85rem;
  line-height: 1.5;
  text-align: center;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.3s ease;
  opacity: 0;
}
.form-status:not(:empty) {
  padding: 11px 16px;
  max-height: 80px;
  opacity: 1;
}
.form-status--success {
  background: rgba(5, 150, 105, 0.12);
  border: 1px solid rgba(5, 150, 105, 0.28);
  color: #6ee7b7;
}
.form-status--error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.28);
  color: #fca5a5;
}

/* ==============================================
   FAQ
   ============================================== */
#faq { background: var(--bg-raised); }

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.faq-item {
  background: var(--bg-card);
  padding: 30px 28px;
  transition: background var(--ease);
}
.faq-item:hover { background: var(--bg-card-hover); }

.faq-q {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.45;
  letter-spacing: -0.01em;
}

.faq-a {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.faq-a a {
  color: var(--accent-light);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--ease);
}
.faq-a a:hover { color: var(--text-primary); }

/* ==============================================
   FOOTER
   ============================================== */
footer {
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
  padding: 56px 0 36px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 44px;
}
.footer-logo {
  margin-bottom: 14px;
}
.footer-logo-img {
  height: 46px;
  width: auto;
  display: block;
  /* Full opacity — white-grey logo reads cleanly on dark footer */
  filter: drop-shadow(0 1px 6px rgba(255,255,255,0.06));
}
.footer-brand p   { font-size: 0.84rem; color: var(--text-muted); }

.footer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.footer-col h4 {
  font-family: var(--font-head); font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--text-secondary); margin-bottom: 14px;
}
.footer-col a {
  display: block; font-size: 0.84rem; color: var(--text-muted);
  margin-bottom: 9px;
  transition: color var(--ease);
}
.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 28px; border-top: 1px solid var(--border);
  flex-wrap: wrap; gap: 8px;
}
.footer-bottom p { font-size: 0.78rem; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); transition: color var(--ease); }
.footer-bottom a:hover { color: var(--accent-light); }

/* ==============================================
   RESPONSIVE — 1024px
   ============================================== */
@media (max-width: 1024px) {
  :root { --section-py: 80px; }

  .about-grid { gap: 52px; }

  .solutions-grid { grid-template-columns: repeat(2, 1fr); }

  .sectors-grid { grid-template-columns: repeat(2, 1fr); }

  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .challenge-grid { grid-template-columns: repeat(2, 1fr); }

  .contact-grid { gap: 52px; }
}

/* ==============================================
   RESPONSIVE — 768px
   ============================================== */
@media (max-width: 768px) {
  :root { --section-py: 64px; }

  /* Nav mobile */
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 1px); left: 0; right: 0;
    background: rgba(5,10,20,0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 12px 16px 20px;
    border-bottom: 1px solid var(--border);
    gap: 2px;
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-link { padding: 12px 14px; width: 100%; }
  .nav-cta { margin-left: 0 !important; margin-top: 8px; text-align: center; }

  /* Hero */
  .hero-content { padding-top: 40px; max-width: 100%; }
  .hero-actions  { flex-direction: column; align-items: flex-start; }
  .hero-scroll-hint { display: none; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .about-stats { grid-template-columns: repeat(3, 1fr); }
  .about-visual-tag { position: static; margin-top: 14px; border-radius: var(--r); }

  /* Solutions */
  .solutions-grid { grid-template-columns: 1fr; }

  /* Use cases */
  .use-case,
  .use-case-reverse {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: 28px;
    margin-bottom: 60px;
  }

  /* Sectors */
  .sectors-grid { grid-template-columns: 1fr 1fr; }

  /* FAQ */
  .faq-grid { grid-template-columns: 1fr; }

  /* Why */
  .why-grid { grid-template-columns: 1fr; border-radius: var(--r-lg); }
  .challenge-grid  { grid-template-columns: 1fr; }
  .challenge-block { padding: 32px 24px; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .contact-form-wrap { padding: 28px 24px; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ==============================================
   RESPONSIVE — 480px
   ============================================== */
@media (max-width: 480px) {
  .about-stats   { grid-template-columns: 1fr; gap: 16px; }
  .sectors-grid  { grid-template-columns: 1fr; }
  .challenge-grid { grid-template-columns: 1fr; }

  .hero-badge { font-size: 0.66rem; }
  .hero-description { font-size: 1rem; }

  .challenge-block { padding: 24px 18px; }
  .footer-nav { grid-template-columns: 1fr; gap: 28px; }
}