:root {
  --bg-color: #050505;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --accent-color: #d4af37; /* Signature Gold */
  --font-main: "Inter", sans-serif;
  --section-padding: 140px 10%;
}

/* --- 1. RESET & ENTRANCE SYSTEM --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  overflow-x: hidden;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  cursor: default; /* Uses custom gold cursor */
  opacity: 1; /* Start hidden for GSAP reveal - ensure JS adds .loaded */
}

/* Revealed via script.js when resources are ready */
body.loaded {
  opacity: 1;
}

.initial-load-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-color);
  z-index: 10000;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
}

/* --- 2. THE 3D GOLD CURSOR --- */
.cursor {
  pointer-events: none;
  position: fixed;
  width: 12px;
  height: 12px;
  background: var(--accent-color);
  border-radius: 50%;
  z-index: 9999;
  mix-blend-mode: difference;
  box-shadow:
    0 0 20px var(--accent-color),
    0 0 40px rgba(212, 175, 55, 0.4);
}

/* --- 3. PREMIUM NAVBAR --- */
.navbar {
  display: flex;
  justify-content: space-between;
  padding: 5px 10%;
  align-items: center;
  z-index: 100;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  backdrop-filter: blur(2px);
  background: rgba(5, 5, 5, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-logo-img {
  height: 95px; /* Maintaining massive brand presence */
  width: auto;
  filter: drop-shadow(0 0 15px rgba(212, 175, 55, 0.3));
  transition: all 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.logo-link:hover .nav-logo-img {
  transform: scale(1.05);
  filter: drop-shadow(0 0 30px rgba(212, 175, 55, 0.5));
}

.nav-links a {
  margin-left: 35px;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: 0.4s;
}

.nav-links a:hover,
.nav-links a.active-link {
  color: var(--accent-color);
}

/* --- 4. HERO SECTION (3D STAGE) --- */
.hero {
  padding: var(--section-padding);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  perspective: 1000px;
}

.hero-bg-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 75%;
  opacity: 0.18;
  z-index: 0;
  pointer-events: none;
}

.hero-bg-logo img {
  width: 100%;
  height: auto;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-title {
  font-size: clamp(3.5rem, 10vw, 8rem);
  line-height: 0.9;
  font-weight: 900;
  letter-spacing: -2px;
  text-transform: uppercase;
}

.gold-gradient {
  background: linear-gradient(135deg, #d4af37 0%, #ffffff 50%, #d4af37 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: shine 4s linear infinite;
}

.hero-description {
  max-width: 650px;
  margin: 35px auto;
  color: var(--text-secondary);
  font-size: 1.2rem;
  line-height: 1.6;
}

/* --- 5. BUTTONS --- */
.hero-btns {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.btn-primary {
  background: var(--accent-color);
  color: #000;
  padding: 20px 45px;
  font-weight: 900;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: 0.4s;
}

.btn-primary:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(212, 175, 55, 0.3);
}

.btn-secondary {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  padding: 20px 0;
  border-bottom: 2px solid var(--accent-color);
  transition: 0.3s;
}

/* Media Query */
@media (max-width: 768px) {
  /* 1. Hero Container Adjustment */
  .hero {
    padding: 120px 5% 60px 5% !important;
    min-height: 90vh; /* Better fit for mobile viewports */
    display: flex;
    align-items: center;
    text-align: center;
  }

  /* 2. Atmospheric Background Logo */
  .hero-bg-logo {
    width: 140% !important; /* Bleed off edges for a sense of scale */
    opacity: 0.12 !important;
    filter: blur(2px);
    transform: translate(-50%, -40%) !important; /* Centered focus */
  }

  /* 3. Typography Scaling */
  .hero-tagline {
    font-size: 0.7rem !important;
    letter-spacing: 3px !important;
    margin-bottom: 15px !important;
  }

  .hero-title {
    font-size: clamp(2.2rem, 12vw, 3.5rem) !important; /* Aggressive but fits */
    line-height: 1.1 !important;
    letter-spacing: -1px !important;
  }

  .hero-description {
    font-size: 1rem !important;
    line-height: 1.5 !important;
    margin: 25px auto !important;
    padding: 0 5%;
    color: var(--text-secondary);
  }

  /* 4. Premium Button Stack */
  .hero-btns {
    flex-direction: column !important; /* Stacked for thumb-reach */
    gap: 15px !important;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }

  .btn-primary {
    width: 100% !important;
    padding: 18px 0 !important;
    text-align: center;
    font-size: 0.9rem !important;
  }

  .btn-secondary {
    width: fit-content;
    margin: 0 auto;
    padding: 10px 0 !important;
    font-size: 0.85rem !important;
  }
}

@media (max-width: 768px) {
  /* 1. Bar Container */
  .expert-bar {
    padding: 40px 5% !important;
    flex-direction: column !important; /* Stack label above logos */
    gap: 20px !important;
    background: linear-gradient(to bottom, #0a0a0a, #050505);
  }

  /* 2. Label Styling */
  .expert-label {
    margin-right: 0 !important;
    font-size: 0.7rem !important;
    color: #666 !important; /* Subtler contrast for premium feel */
    letter-spacing: 3px !important;
    text-align: center;
  }

  /* 3. Logo Grid System */
  .expert-logos {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr); /* 2x2 Grid for symmetry */
    gap: 15px;
    width: 100%;
  }

  .expert-logos span {
    margin: 0 !important;
    padding: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.75rem !important;
    text-align: center;
    letter-spacing: 1px;
    white-space: nowrap;
    transition: color 0.3s ease;
  }

  /* Subtle highlight on the first item */
  .expert-logos span:first-child {
    border-color: rgba(212, 175, 55, 0.2);
    color: var(--accent-color);
  }
}

/* --- 6. MARQUEE & CARDS --- */
.marquee-container {
  overflow: hidden;
  padding: 60px 0;
  background: #080808;
}

.marquee-track {
  display: flex;
  gap: 5em;
  width: max-content;
  animation: scrollMarquee 10s linear infinite;
}

.story-card {
  width: 380px;
  background: #0c0c0c;
  padding: 40px;
  border: 1px solid #1a1a1a;
  border-radius: 2px;
}

.client-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin-bottom: 20px;
  border: 1px solid var(--accent-color);
}

.story-text {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}

.story-client {
  font-weight: 700;
  font-size: 0.9rem;
}

.story-stat {
  color: var(--accent-color);
  font-weight: 900;
  display: block;
  margin-top: 10px;
}

/* Media Query */
@media (max-width: 768px) {
  /* 1. Section Spacing */
  .success-stories-section {
    padding: 80px 0 !important; /* Remove horizontal padding so marquee is edge-to-edge */
  }

  .success-stories-section h2 {
    font-size: 2.5rem !important; /* Smaller but thick */
    padding: 0 5%;
    margin-bottom: 40px !important;
  }

  /* 2. Container & Track Optimization */
  .marquee-container {
    padding: 20px 0 !important;
  }

  .marquee-track {
    gap: 20px !important; /* Tighter gap for mobile */
    animation-duration: 15s !important; /* Faster scroll to keep mobile users engaged */
  }

  /* 3. Story Card Scaling */
  .story-card {
    width: 280px !important; /* Narrower for mobile screens */
    padding: 25px !important;
    background: #0a0a0a !important;
    border-color: #151515 !important;
  }

  .client-avatar {
    width: 50px !important;
    height: 50px !important;
    margin-bottom: 15px !important;
  }

  .story-text {
    font-size: 0.9rem !important;
    line-height: 1.5 !important;
    margin-bottom: 15px !important;
  }

  .story-client {
    font-size: 0.8rem !important;
  }

  .story-stat {
    font-size: 0.85rem !important;
    margin-top: 5px !important;
  }
}

/* --- 7. EXPERT BAR --- */
.expert-bar {
  background: #0a0a0a;
  padding: 40px 10%;
  border-top: 1px solid #1a1a1a;
  display: flex;
  justify-content: center;
  align-items: center;
}

.expert-label {
  font-weight: 900;
  color: #444;
  margin-right: 30px;
  font-size: 0.8rem;
  letter-spacing: 2px;
}

.expert-logos span {
  font-weight: 800;
  color: #333;
  margin: 0 20px;
  font-size: 1.1rem;
  transition: 0.4s;
}

.expert-logos span:hover {
  color: var(--accent-color);
}

/* --- 8. UTILS & ANIMATIONS --- */
#canvas-container {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
}

@keyframes shine {
  to {
    background-position: 200% center;
  }
}

@keyframes scrollMarquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

#canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1; /* Sits behind everything */
  background: #000; /* Dark void */
}

body {
  background: transparent; /* Allows Three.js to show through */
}

.hero,
.success-stories-section,
footer {
  background: transparent !important; /* Remove solid blacks */
}

/* Add a subtle dark gradient to ensure text remains readable */
section {
  position: relative;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.4),
    transparent,
    rgba(0, 0, 0, 0.4)
  ) !important;
}

/* Remove the background logo image that was blocking the view */
.hero-bg-logo {
  opacity: 0.15; /* Make it very faint so the 3D particles dominate */
  pointer-events: none;
}

/* MOBILE ADAPTATION */
@media (max-width: 768px) {
  .nav-logo-img {
    height: 60px;
  }
  .hero-title {
    font-size: 3rem;
  }
  .hero-btns {
    flex-direction: column;
    align-items: center;
  }
  .nav-links {
    display: none;
  } /* Hamburger JS handles this */
}

/* --- HAMBURGER SYSTEM --- */
.hamburger {
  display: none; /* Hidden on desktop */
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 2100; /* Stays above the menu */
  padding: 10px;
}

.hamburger span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--accent-color);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* --- MOBILE NAVIGATION --- */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  /* Hamburger to X Animation */
  .hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(20px);
  }
  .hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%; /* Hidden off-screen */
    width: 100%;
    height: 100vh;
    background: rgba(5, 5, 5, 0.98);
    backdrop-filter: blur(25px);
    display: flex !important; /* Overriding desktop 'none' */
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: all 0.6s cubic-bezier(0.77, 0, 0.175, 1);
    z-index: 1999;
  }

  .nav-links.active {
    right: 0; /* Slide into view */
  }

  .nav-links a {
    margin: 20px 0;
    font-size: 1.8rem;
    font-weight: 900;
    letter-spacing: 5px;
    opacity: 0;
    transform: translateY(20px);
    transition: 0.4s;
  }

  /* When menu is active, animate links */
  .nav-links.active a {
    opacity: 1;
    transform: translateY(0);
  }

  .nav-logo-img {
    height: 60px;
  }

  .hero-title {
    font-size: clamp(2.5rem, 12vw, 4rem) !important;
  }
}

/* Media Query for Footer */
@media (max-width: 768px) {
  /* 1. Footer Container Scaling */
  footer {
    padding: 60px 8% 40px 8% !important;
    margin-top: 60px !important;
  }

  /* 2. Grid to Stack Conversion */
  footer > div:first-child {
    grid-template-columns: 1fr !important; /* Stack columns */
    gap: 40px !important;
    text-align: center;
  }

  /* 3. Branding & Description */
  footer p {
    max-width: 100% !important;
    margin: 0 auto;
    font-size: 0.9rem;
  }

  .footer-logo-container {
    display: flex;
    justify-content: center;
  }

  /* 4. Navigation & Connect Lists */
  footer h4 {
    margin-bottom: 20px !important;
    color: var(--accent-color) !important; /* Visual cue for sections */
  }

  footer ul li {
    margin-bottom: 12px;
  }

  /* 5. Copyright Bar Refinement */
  footer > div:last-child {
    flex-direction: column !important; /* Vertical stack for legal text */
    gap: 15px;
    margin-top: 60px !important;
    text-align: center;
    border-top: 1px solid #111;
  }
}

/* --- 3D BACK TO TOP BUTTON --- */
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 55px; /* Slightly larger for 3D presence */
  height: 55px;
  background: linear-gradient(145deg, #0a0a0a, #000); /* Adds depth */
  color: var(--accent-color);
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 50%;
  cursor: pointer;
  z-index: 999;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.4rem;

  /* 3D Properties */
  perspective: 1000px;
  transform-style: preserve-3d;
  box-shadow:
    0 10px 20px rgba(0, 0, 0, 0.5),
    inset 0 0 10px rgba(212, 175, 55, 0.05);

  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  opacity: 0;
  visibility: hidden;
  transform: translateY(30px) rotateX(-45deg);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) rotateX(0deg);
  /* Continuous floating animation when visible */
  animation: floatButton 3s ease-in-out infinite;
}

/* 3D Hover Effect */
.back-to-top:hover {
  background: var(--accent-color);
  color: #000;
  border-color: #fff;
  transform: scale(1.1) translateZ(20px) rotateY(10deg);
  box-shadow: 0 15px 30px rgba(212, 175, 55, 0.6);
}

/* Arrow Bounce on Hover */
.back-to-top:hover .arrow {
  animation: arrowBounce 0.6s ease-in-out infinite alternate;
}

/* --- ANIMATIONS --- */
@keyframes floatButton {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(0px);
  }
}

@keyframes arrowBounce {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-5px);
  }
}

/* Mobile Adaptation */
@media (max-width: 768px) {
  .back-to-top {
    bottom: 25px;
    right: 25px;
    width: 50px;
    height: 50px;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-color: var(--accent-color);
    animation: floatButton 4s ease-in-out infinite; /* Slower on mobile */
  }
}

/* Vault */
/* Store Showroom Grid */
.store-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.store-card {
  height: 150px;
  background: #0a0a0a;
  border: 1px solid #1a1a1a;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: all 0.5s cubic-bezier(0.2, 1, 0.3, 1);
  transform-style: preserve-3d;
}

.store-card span {
  color: #fff;
  font-weight: 900;
  letter-spacing: 2px;
  font-size: 0.8rem;
  text-transform: uppercase;
  z-index: 2;
}

.store-card:hover {
  border-color: var(--accent-color);
  transform: translateY(-10px) rotateX(10deg);
  box-shadow: 0 15px 30px rgba(212, 175, 55, 0.1);
}

.store-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(212, 175, 55, 0.1),
    transparent
  );
  transition: 0.5s;
}

.store-card:hover::before {
  left: 100%;
}

/* Proof Masonry */
.filter-controls {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 50px;
}

.filter-btn {
  background: transparent;
  border: 1px solid #222;
  color: #555;
  padding: 10px 25px;
  cursor: pointer;
  font-weight: 700;
  transition: 0.3s;
}

.filter-btn.active,
.filter-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.proof-masonry {
  column-count: 3;
  column-gap: 20px;
}

@media (max-width: 900px) {
  .proof-masonry {
    column-count: 2;
  }
}
@media (max-width: 600px) {
  .proof-masonry {
    column-count: 1;
  }
}

.proof-item {
  break-inside: avoid;
  margin-bottom: 20px;
  background: #111;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #1a1a1a;
  transition: transform 0.4s ease;
}

.proof-item img {
  width: 100%;
  display: block;
  transition: 0.5s ease;
}

.proof-item:hover img {
  transform: scale(1.05);
}

/* Vault Media Query */
@media (max-width: 768px) {
  /* 1. Vault Header Optimization */
  section[style*="text-align: center"] {
    margin-bottom: 50px !important;
    padding: 0 20px !important;
  }

  h1.reveal {
    font-size: 3.2rem !important; /* Forces a clean fit on mobile portrait */
    line-height: 1 !important;
    letter-spacing: -1px;
    margin-top: 20px;
  }

  h1.reveal .gold-gradient {
    display: block; /* Stacks "VAULT" under "THE" for better mobile balance */
    font-size: 4rem;
  }

  section[style*="text-align: center"] p.reveal {
    font-size: 0.95rem !important;
    line-height: 1.6;
    margin-top: 15px !important;
    padding: 0 10px;
  }
}

.vault-showroom {
  padding: 60px 0 100px 0;
  overflow: hidden;
  background: #000;
}

.section-label {
  font-size: 1rem;
  letter-spacing: 7px;
  color: #444;
  margin-bottom: 50px;
  text-align: center;
  font-weight: 900;
}

/* The magic container that fades the edges */
.carousel-container {
  width: 100%;
  position: relative;
  display: flex;
  align-items: center;
  /* Masking edges for premium "faded" look */
  -webkit-mask-image: linear-gradient(
    to right,
    transparent,
    black 15%,
    black 85%,
    transparent
  );
  mask-image: linear-gradient(
    to right,
    transparent,
    black 15%,
    black 85%,
    transparent
  );
}

.carousel-track {
  display: flex;
  width: max-content;
  gap: 30px;
  animation: scrollInfinitely 40s linear infinite;
  perspective: 1000px; /* Gives 3D depth to children */
}

/* Pause on hover so users can click links */
.carousel-track:hover {
  animation-play-state: paused;
}

.store-card {
  width: 320px;
  height: 180px;
  background: linear-gradient(145deg, #0a0a0a, #000);
  border: 1px solid rgba(212, 175, 55, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  transform-style: preserve-3d;
}

.store-card span {
  color: var(--text-secondary);
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.8rem;
  transition: 0.4s;
}

/* 3D Hover State */
.store-card:hover {
  border-color: var(--accent-color);
  background: var(--accent-color);
  transform: translateZ(50px) scale(1.05);
  box-shadow: 0 20px 40px rgba(212, 175, 55, 0.2);
}

.store-card:hover span {
  color: #000;
  transform: translateZ(30px); /* Text pops out of the card */
}

@keyframes scrollInfinitely {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  } /* Scrolls exactly half the track width */
}

/* Mobile Tweak */
@media (max-width: 768px) {
  .store-card {
    width: 240px;
    height: 130px;
  }
  .carousel-track {
    animation-duration: 40s; /* Slightly faster on mobile to feel snappy */
  }
}
.proof-carousel-section {
  padding: 80px 0;
  background: #050505;
  overflow: hidden;
}

/* Glass Filters */
.filter-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-controls {
  background: rgba(20, 20, 20, 0.8);
  backdrop-filter: blur(10px);
  padding: 6px;
  border-radius: 50px;
  border: 1px solid rgba(212, 175, 55, 0.3);
  display: flex;
  gap: 5px;
}

.filter-btn {
  padding: 10px 20px;
  border-radius: 50px;
  border: none;
  background: transparent;
  color: #666;
  font-size: 0.7rem;
  font-weight: 800;
  cursor: pointer;
  transition: 0.3s;
}

.filter-btn.active {
  background: var(--accent-color);
  color: #000;
}

/* The Carousel Track */
.carousel-viewport {
  width: 100%;
  overflow: hidden;
  position: relative;
  /* Premium Edge Fade */
  mask-image: linear-gradient(
    to right,
    transparent,
    black 10%,
    black 90%,
    transparent
  );
}

.carousel-track {
  display: flex;
  gap: 20px;
  padding: 40px 20px;
  width: max-content;
  cursor: grab;
  transition: transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.proof-card {
  width: 320px;
  flex-shrink: 0;
  border-radius: 15px;
  overflow: hidden;
  border: 1px solid rgba(212, 175, 55, 0.1);
  background: rgba(20, 20, 20, 0.4); /* Glass effect */
  backdrop-filter: blur(10px);
  transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.proof-card img {
  width: 100%;
  height: auto;
  display: block;
  filter: brightness(0.7) contrast(1.1);
  transition: 0.5s;
}

.proof-card:hover {
  transform: scale(1.08) translateY(-15px) rotateZ(1deg);
  border-color: var(--accent-color);
  box-shadow: 0 20px 50px rgba(212, 175, 55, 0.15);
  z-index: 10;
}

.proof-card:hover img {
  filter: brightness(1.1) contrast(1.1);
}

/* RESPONSIVE OPTIMIZATION */
@media (max-width: 768px) {
  .carousel-viewport {
    mask-image: none;
    overflow-x: auto;
    padding-bottom: 30px;
    -webkit-overflow-scrolling: touch;
  }

  .proof-card {
    width: 260px; /* Bigger on mobile for legibility */
  }

  .filter-controls {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    padding: 10px;
    scrollbar-width: none;
  }

  .filter-btn {
    padding: 8px 18px;
    font-size: 0.65rem;
    white-space: nowrap;
  }
}