/* ═══════════════════════════════════════════════════════════════════
   HURTZ DONUT STUDIOS — MAIN STYLESHEET
   Theme: Dark Forge — Tactical Fantasy meets AI Technology
   ═══════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700;900&family=Rajdhani:wght@300;400;500;600;700&family=Lato:wght@300;400;700&display=swap');

/* ─── Variables ─────────────────────────────────────────────────── */
:root {
  --black:       #07070F;
  --dark:        #0A0A14;
  --navy:        #0D0D1A;
  --card-bg:     #111122;
  --card-border: #1E1E3A;
  --green:       #76B900;
  --green-dim:   #4A7300;
  --green-glow:  rgba(118,185,0,0.15);
  --teal:        #00B4D8;
  --teal-dim:    #007A96;
  --accent:      #C8F500;
  --white:       #FFFFFF;
  --off-white:   #E8EAF0;
  --silver:      #A8AFBD;
  --muted:       #5A6070;
  --font-display: 'Cinzel', serif;
  --font-ui:      'Rajdhani', sans-serif;
  --font-body:    'Lato', sans-serif;
  --radius:       6px;
  --transition:   0.25s ease;
  --glow-green:   0 0 20px rgba(118,185,0,0.4);
  --glow-teal:    0 0 20px rgba(0,180,216,0.4);
  --shadow-card:  0 4px 24px rgba(0,0,0,0.5);
}

/* ─── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--dark);
  color: var(--off-white);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--green); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
ul { list-style: none; }

/* ─── Scrollbar ─────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--navy); }
::-webkit-scrollbar-thumb { background: var(--green-dim); border-radius: 3px; }

/* ─── Navigation ─────────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  background: rgba(7,7,15,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  transition: background var(--transition);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.nav-logo-badge {
  background: var(--green);
  color: var(--black);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  padding: 4px 10px;
  border-radius: 3px;
}
.nav-logo-name {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--white);
  letter-spacing: 0.05em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-links a {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--silver);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  text-transform: uppercase;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--green);
  background: var(--green-glow);
}
.nav-cta {
  background: var(--green) !important;
  color: var(--black) !important;
  padding: 0.4rem 1.1rem !important;
  font-weight: 700 !important;
}
.nav-cta:hover {
  background: var(--accent) !important;
  color: var(--black) !important;
}
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ─── Donate Banner ─────────────────────────────────────────────── */
#donate-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 999;
  background: linear-gradient(90deg, var(--green-dim), #1a3a00, var(--green-dim));
  border-top: 1px solid var(--green);
  padding: 0.6rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  animation: bannerPulse 4s ease-in-out infinite;
}
@keyframes bannerPulse {
  0%, 100% { border-top-color: var(--green); }
  50% { border-top-color: var(--accent); }
}
.banner-text {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.04em;
}
.banner-text span { color: var(--accent); }
.banner-btn {
  background: var(--green);
  color: var(--black);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 1.2rem;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.banner-btn:hover {
  background: var(--accent);
  color: var(--black);
  transform: scale(1.04);
}
.banner-close {
  background: none;
  border: none;
  color: var(--silver);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0 0.25rem;
  transition: color var(--transition);
  margin-left: 0.5rem;
}
.banner-close:hover { color: var(--white); }

/* ─── Page Wrapper ───────────────────────────────────────────────── */
.page-content {
  padding-top: 64px;
  padding-bottom: 80px;
}

/* ─── Section Utilities ──────────────────────────────────────────── */
.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}
.section-full {
  padding: 5rem 2rem;
  width: 100%;
}
.section-label {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.75rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.section-title span { color: var(--green); }
.section-subtitle {
  font-size: 1.05rem;
  color: var(--silver);
  max-width: 620px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.divider {
  width: 60px;
  height: 3px;
  background: var(--green);
  margin: 1.25rem 0 2rem;
}

/* ─── Cards ─────────────────────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: var(--shadow-card);
}
.card:hover {
  border-color: var(--green-dim);
  box-shadow: var(--glow-green), var(--shadow-card);
  transform: translateY(-2px);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* ─── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.7rem 1.8rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--green);
  color: var(--black);
}
.btn-primary:hover {
  background: var(--accent);
  color: var(--black);
  box-shadow: var(--glow-green);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--green);
  border: 1px solid var(--green);
}
.btn-outline:hover {
  background: var(--green-glow);
  color: var(--accent);
  border-color: var(--accent);
}
.btn-teal {
  background: var(--teal);
  color: var(--black);
}
.btn-teal:hover {
  background: #00D4FF;
  color: var(--black);
  box-shadow: var(--glow-teal);
}

/* ─── Partner Logos Strip ────────────────────────────────────────── */
.partners-strip {
  background: var(--navy);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 1.5rem 2rem;
  overflow: hidden;
}
.partners-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}
.partner-item {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--transition);
}
.partner-item:hover { color: var(--green); }
.partner-item.nvidia { color: var(--green-dim); }
.partner-item.anthropic { color: #7B5EA7; }
.partner-item.openai { color: #4a9a7a; }
.partner-item.grok { color: #5B9BD5; }

/* ─── Newsletter Form ────────────────────────────────────────────── */
.newsletter-form {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.newsletter-form input {
  flex: 1;
  min-width: 220px;
  background: var(--navy);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}
.newsletter-form input:focus {
  outline: none;
  border-color: var(--green);
}
.newsletter-form input::placeholder { color: var(--muted); }

/* ─── Social Icons ────────────────────────────────────────────────── */
.social-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}
.social-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--silver);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.social-link:hover {
  color: var(--green);
  border-color: var(--green);
  background: var(--green-glow);
}

/* ─── Footer ─────────────────────────────────────────────────────── */
#footer {
  background: var(--black);
  border-top: 1px solid var(--card-border);
  padding: 3rem 2rem 6rem;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 0.75rem;
  max-width: 260px;
  line-height: 1.6;
}
.footer-col h4 {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--off-white); }
.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--card-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ─── Hero Section ────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-video-wrap iframe {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 100vw;
  height: 56.25vw;
  min-height: 100vh;
  min-width: 177.78vh;
  pointer-events: none;
  opacity: 0.25;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(7,7,15,0.3) 0%,
    rgba(7,7,15,0.5) 50%,
    rgba(7,7,15,0.95) 100%
  );
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* ─── Launchpad Cards ────────────────────────────────────────────── */
.launch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}
.launch-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.4), 0 0 0 0 transparent;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  cursor: pointer;
  text-decoration: none;
  display: block;
}
.launch-card:hover {
  transform: translateY(-3px);
  border-color: var(--green-dim);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), var(--glow-green);
}
.launch-card-media {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  overflow: hidden;
  position: relative;
}
.launch-card-media img,
.launch-card-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.launch-card-body {
  padding: 1.25rem;
}
.launch-card-title {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.4rem;
}
.launch-card-desc {
  font-size: 0.88rem;
  color: var(--silver);
  line-height: 1.5;
  margin-bottom: 1rem;
}
.launch-card-tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--green-dim);
  color: var(--accent);
}
.launch-card-tag.coming-soon {
  background: rgba(0,180,216,0.15);
  color: var(--teal);
}

/* ─── Treasure Chest / Mimic Easter Egg ─────────────────────────── */
.chest-lock {
  position: relative;
  display: inline-block;
  cursor: pointer;
  user-select: none;
}
.chest-icon {
  font-size: 3rem;
  display: block;
  transition: transform 0.3s;
  filter: drop-shadow(0 0 8px rgba(200,245,0,0.4));
}
.chest-lock:hover .chest-icon {
  transform: scale(1.1);
}
.chest-tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-bg);
  border: 1px solid var(--green);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  width: 240px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--off-white);
  text-align: center;
  z-index: 50;
  line-height: 1.5;
  box-shadow: var(--glow-green);
}
.chest-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--green);
}
.chest-lock.open .chest-tooltip { display: block; }
.mimic-bite {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.85);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
}
.mimic-bite.active { display: flex; }
.mimic-face {
  font-size: 8rem;
  animation: mimicChomp 0.15s ease-in-out 3;
  filter: drop-shadow(0 0 30px rgba(200,0,0,0.8));
}
@keyframes mimicChomp {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(0.6) rotate(3deg); }
}
.mimic-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: #FF4444;
  text-align: center;
  animation: mimicShake 0.1s ease-in-out 5;
}
@keyframes mimicShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}
.mimic-sub {
  font-family: var(--font-ui);
  color: var(--silver);
  font-size: 0.9rem;
}

/* ─── Roadmap Timeline ───────────────────────────────────────────── */
.roadmap-timeline {
  position: relative;
  padding-left: 2rem;
}
.roadmap-timeline::before {
  content: '';
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--green), var(--teal-dim), var(--card-border));
}
.roadmap-item {
  position: relative;
  margin-bottom: 2.5rem;
  padding-left: 1.5rem;
}
.roadmap-item::before {
  content: '';
  position: absolute;
  left: -1.7rem;
  top: 0.4rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--green);
  border: 2px solid var(--dark);
  box-shadow: 0 0 8px var(--green);
}
.roadmap-item.planned::before { background: var(--teal); box-shadow: 0 0 8px var(--teal); }
.roadmap-item.future::before { background: var(--card-border); box-shadow: none; }
.roadmap-phase {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.25rem;
}
.roadmap-item.planned .roadmap-phase { color: var(--teal); }
.roadmap-item.future .roadmap-phase { color: var(--muted); }
.roadmap-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--white);
  margin-bottom: 0.25rem;
}
.roadmap-timing {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--green);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.roadmap-item.planned .roadmap-timing { color: var(--teal); }
.roadmap-item.future .roadmap-timing { color: var(--muted); }
.roadmap-desc {
  font-size: 0.9rem;
  color: var(--silver);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}
.roadmap-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.roadmap-tag {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--green-glow);
  color: var(--green);
  border: 1px solid var(--green-dim);
}

/* ─── Hardware Wishlist ───────────────────────────────────────────── */
.hardware-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.hardware-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  border-left: 3px solid var(--green);
}
.hardware-item h4 {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 0.35rem;
}
.hardware-item p {
  font-size: 0.83rem;
  color: var(--silver);
  line-height: 1.5;
}

/* ─── About Section ──────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.about-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.about-card:hover {
  border-color: var(--green-dim);
  box-shadow: var(--glow-green);
}
.about-card-photo {
  width: 100%;
  aspect-ratio: 1;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  overflow: hidden;
}
.about-card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-card-info {
  padding: 1rem;
}
.about-card-name {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--white);
  margin-bottom: 0.2rem;
}
.about-card-role {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.5rem;
}
.about-card-bio {
  font-size: 0.83rem;
  color: var(--silver);
  line-height: 1.5;
}

/* ─── News Cards ──────────────────────────────────────────────────── */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.news-card { display: flex; flex-direction: column; }
.news-card-cat {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.5rem;
}
.news-card-title {
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}
.news-card-excerpt {
  font-size: 0.87rem;
  color: var(--silver);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1rem;
}
.news-card-date {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--muted);
}

/* ─── Animations ──────────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.fade-up { animation: fadeUp 0.7s ease both; }
.fade-up-2 { animation: fadeUp 0.7s ease 0.15s both; }
.fade-up-3 { animation: fadeUp 0.7s ease 0.3s both; }
.fade-up-4 { animation: fadeUp 0.7s ease 0.45s both; }

/* ─── Utility ──────────────────────────────────────────────────────── */
.text-green { color: var(--green); }
.text-teal  { color: var(--teal); }
.text-accent { color: var(--accent); }
.text-muted { color: var(--muted); }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.flex { display: flex; }
.gap-2 { gap: 1rem; }
.items-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }

/* ─── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--black);
    border-bottom: 1px solid var(--card-border);
    padding: 1rem;
    gap: 0.25rem;
  }
  .nav-mobile-toggle { display: block; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-content { padding-top: 5rem; }
  #donate-banner { flex-wrap: wrap; padding: 0.75rem 1rem; gap: 0.75rem; }
}
@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .section { padding: 3rem 1.25rem; }
}