/* ==========================================================================
   FORM / 3D - Modern Design System & Stylesheet
   Tailored for 3D Printing & High-Tech Manufacturing Agencies
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & CSS Variables
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette */
  --bg-deep: #050505;
  --bg-surface: #111111;
  --bg-surface-elevated: #181818;
  --bg-surface-bright: #262626;
  --border-color: #222222;
  --border-subtle: rgba(255, 255, 255, 0.08);

  --brand-accent: #FF6B50;
  --brand-accent-hover: #ff856e;
  --brand-accent-glow: rgba(255, 107, 80, 0.15);

  --text-main: #e5e2e1;
  --text-muted: #a09d9b;
  --text-dim: #666463;
  --text-dark: #050505;

  /* Typography */
  --font-headline: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --container-max: 1440px;
  --gutter: 24px;
  --section-gap: 120px;
  --section-gap-mobile: 80px;
  --margin-desktop: 64px;
  --margin-mobile: 24px;

  /* Transition timings */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & Core CSS
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

::selection {
  background-color: var(--brand-accent);
  color: var(--text-dark);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-accent);
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* --------------------------------------------------------------------------
   3. Typography Utility Classes
   -------------------------------------------------------------------------- */
.font-display-2xl {
  font-family: var(--font-headline);
  font-size: clamp(60px, 9vw, 120px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  font-weight: 800;
}

.font-display-xl {
  font-family: var(--font-headline);
  font-size: clamp(42px, 6vw, 80px);
  line-height: 1;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.font-headline-lg {
  font-family: var(--font-headline);
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.font-headline-md {
  font-family: var(--font-headline);
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 600;
}

.font-body-lg {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  font-weight: 400;
}

.font-body-md {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  font-weight: 400;
}

.font-label-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.3;
  letter-spacing: 0.05em;
  font-weight: 500;
  text-transform: uppercase;
}

.text-brand-accent {
  color: var(--brand-accent);
}

.text-outline {
  -webkit-text-stroke: 1.5px var(--border-color);
  color: transparent;
  transition: -webkit-text-stroke var(--transition-normal);
}

.text-outline:hover {
  -webkit-text-stroke: 1.5px var(--brand-accent);
}

/* --------------------------------------------------------------------------
   4. Layout Containers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--margin-desktop);
  padding-right: var(--margin-desktop);
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--margin-mobile);
    padding-right: var(--margin-mobile);
  }
}

.section-gap {
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}

@media (max-width: 768px) {
  .section-gap {
    padding-top: var(--section-gap-mobile);
    padding-bottom: var(--section-gap-mobile);
  }
}

.border-t-brand {
  border-top: 1px solid var(--border-color);
}

.border-b-brand {
  border-bottom: 1px solid var(--border-color);
}

/* --------------------------------------------------------------------------
   5. Navigation Bar
   -------------------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(19, 19, 19, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(89, 65, 60, 0.2);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.navbar.scrolled {
  background-color: rgba(5, 5, 5, 0.9);
  border-bottom-color: var(--border-color);
}

.navbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  padding-bottom: 16px;
}

.navbar__logo {
  font-family: var(--font-headline);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-main);
  transition: color var(--transition-fast);
}

.navbar__logo:hover {
  color: var(--brand-accent);
}

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

.navbar__link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--brand-accent);
  transition: width var(--transition-fast);
}

.navbar__link:hover {
  color: var(--text-main);
}

.navbar__link:hover::after {
  width: 100%;
}

.navbar__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background-color: var(--brand-accent);
  color: var(--text-dark);
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.navbar__cta:hover {
  background-color: #ffffff;
  transform: translateY(-1px);
}

.navbar__hamburger {
  display: none;
  color: var(--text-main);
  padding: 8px;
}

@media (max-width: 768px) {

  .navbar__links,
  .navbar__cta {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* Mobile Drawer Nav */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-deep);
  z-index: 99;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 28px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-nav.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav__link {
  font-family: var(--font-headline);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  transition: color var(--transition-fast);
}

.mobile-nav__link:hover {
  color: var(--brand-accent);
}

.mobile-nav__cta {
  margin-top: 20px;
  padding: 16px 32px;
  background-color: var(--brand-accent);
  color: var(--text-dark);
  font-family: var(--font-headline);
  font-size: 18px;
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   6. Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  padding-top: 140px;
  padding-bottom: var(--margin-desktop);
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.85;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: 0.25;
  mix-blend-mode: screen;
  background-image: url('https://images.unsplash.com/photo-1581092160607-ee22621dd758?auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
}

.hero__gradient-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(circle at 70% 30%, rgba(255, 107, 80, 0.12) 0%, transparent 65%),
    linear-gradient(to top, var(--bg-deep) 10%, rgba(5, 5, 5, 0.7) 60%, rgba(5, 5, 5, 0.3) 100%);
}

.hero__grid {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 48px;
  width: 100%;
}

@media (min-width: 992px) {
  .hero__grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 48px;
  }
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin-left: 0;
  margin-right: auto;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero__headline {
  margin-bottom: 24px;
  text-align: left;
}

.hero__subheadline {
  color: var(--text-main);
  margin-bottom: 16px;
  text-align: left;
}

.hero__description {
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 640px;
  text-align: left;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 16px;
  width: 100%;
}

/* --------------------------------------------------------------------------
   CardSwap Showcase Component (Hero Right Side)
   -------------------------------------------------------------------------- */
.hero__card-swap-container {
  position: relative;
  width: 100%;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: left;
  user-select: none;
  padding-left: 30px;

}

.card-swap-wrapper {
  position: relative;
  width: 380px;
  height: 290px;
  perspective: 1200px;
  transform-style: preserve-3d;
}

@media (max-width: 480px) {
  .card-swap-wrapper {
    width: 300px;
    height: 240px;
  }
}

.card-swap-card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 380px;
  height: 290px;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  transform-style: preserve-3d;
  will-change: transform;
  backface-visibility: hidden;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.3s ease;
}

@media (max-width: 480px) {
  .card-swap-card {
    width: 300px;
    height: 240px;
  }
}

.card-swap-card:hover {
  border-color: var(--brand-accent);
}

.card-swap-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.card-swap-card:hover .card-swap-card__img {
  transform: scale(1.08);
}

.card-swap-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5, 5, 5, 0.95) 0%, rgba(5, 5, 5, 0.4) 60%, transparent 100%);
}

.card-swap-card__badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  background-color: rgba(5, 5, 5, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--brand-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.card-swap-card__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  color: var(--text-main);
}

.card-swap-card__title {
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #ffffff;
}

.card-swap-card__desc {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  background-color: var(--brand-accent);
  color: var(--text-dark);
  font-family: var(--font-headline);
  font-size: 16px;
  font-weight: 700;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.btn-primary:hover {
  background-color: #ffffff;
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  font-family: var(--font-headline);
  font-size: 16px;
  font-weight: 600;
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--brand-accent);
  color: var(--brand-accent);
  background-color: var(--brand-accent-glow);
}

/* --------------------------------------------------------------------------
   7. Problem Statement Section
   -------------------------------------------------------------------------- */
.problem-statement {
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

/* --------------------------------------------------------------------------
   8. Bento Grid (Value Propositions)
   -------------------------------------------------------------------------- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gutter);
}

@media (max-width: 768px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
}

.bento-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 48px;
  transition: border-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.bento-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand-accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.bento-card:hover {
  border-color: rgba(255, 107, 80, 0.4);
  transform: translateY(-4px);
  box-shadow: inset 0 0 30px var(--brand-accent-glow), 0 10px 30px rgba(0, 0, 0, 0.5);
}

.bento-card:hover::before {
  opacity: 1;
}

.bento-card__tag {
  color: var(--brand-accent);
  margin-bottom: 32px;
  display: block;
}

.bento-card__title {
  color: var(--text-main);
  margin-bottom: 16px;
}

.bento-card__desc {
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   9. Selected Work (Portfolio) Section & Browser Iframe Previews
   -------------------------------------------------------------------------- */
.work-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 48px;
}

.work-grid {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.work-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.work-card:hover {
  border-color: rgba(255, 107, 80, 0.4);
  box-shadow: 0 20px 40px rgba(255, 107, 80, 0.1);
}

.browser-frame {
  background-color: #111111;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: relative;
}

.browser-frame__header {
  height: 44px;
  background-color: #161616;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  user-select: none;
}

.browser-frame__controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

.browser-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: inline-block;
}

.browser-dot--close {
  background-color: #ff5f56;
}

.browser-dot--minimize {
  background-color: #ffbd2e;
}

.browser-dot--maximize {
  background-color: #27c93f;
}

.browser-frame__address {
  background-color: #080808;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: 4px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 360px;
  width: 100%;
  justify-content: center;
}

.browser-frame__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.browser-frame__action-btn {
  color: var(--text-muted);
  font-size: 14px;
  transition: color var(--transition-fast);
}

.browser-frame__action-btn:hover {
  color: var(--brand-accent);
}

.browser-frame__viewport {
  position: relative;
  width: 100%;
  height: 520px;
  background-color: #080808;
  overflow: hidden;
}

@media (max-width: 992px) {
  .browser-frame__viewport {
    height: 400px;
  }
}

@media (max-width: 576px) {
  .browser-frame__viewport {
    height: 320px;
  }
}

.browser-frame__iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.browser-frame__iframe.is-loaded {
  opacity: 1;
}

.browser-frame__loader {
  position: absolute;
  inset: 0;
  background-color: #0e0e0e;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 2;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.browser-frame__loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--brand-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.browser-frame__error {
  position: absolute;
  inset: 0;
  background-color: #0e0e0e;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 3;
  padding: 24px;
  text-align: center;
}

.browser-frame__error.is-visible {
  display: flex;
}

.work-card__content {
  padding: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.work-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.work-card:hover .work-card__cta span:last-child {
  transform: translateX(4px);
  transition: transform var(--transition-fast);
}

.work-card__tags {
  display: flex;
  gap: 8px;
}

.badge {
  padding: 6px 14px;
  background-color: var(--bg-deep);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   10. Materials & Process Section
   -------------------------------------------------------------------------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
}

@media (max-width: 992px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
}

.process-step {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 32px;
  border-radius: 12px;
  position: relative;
}

.process-step__number {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--brand-accent);
  margin-bottom: 20px;
}

.process-step__title {
  font-size: 20px;
  margin-bottom: 12px;
}

.process-step__desc {
  color: var(--text-muted);
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   11. Contact & Interactive Section
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 16px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 16px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--brand-accent);
}

/* --------------------------------------------------------------------------
   12. Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: #030303;
  border-top: 1px solid var(--border-color);
  padding-top: 60px;
  padding-bottom: 60px;
  margin-top: auto;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.footer__brand {
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
}

.footer__links {
  display: flex;
  gap: 24px;
}

.footer__link {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--brand-accent);
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

/* --------------------------------------------------------------------------
   13. Scroll Reveal Animation Logic
   -------------------------------------------------------------------------- */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-up.active {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   14. Interactive Sticky Content Switcher ("HOW WE THINK")
   -------------------------------------------------------------------------- */
.how-we-think__intro {
  max-width: 800px;
  margin-bottom: 96px;
}

.how-we-think__layout {
  display: flex;
  flex-direction: column;
  position: relative;
  align-items: flex-start;
}

@media (min-width: 768px) {
  .how-we-think__layout {
    flex-direction: row;
  }
}

.how-we-think__sticky {
  display: none;
}

@media (min-width: 768px) {
  .how-we-think__sticky {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 42%;
    position: sticky;
    top: 100px;
    height: calc(100vh - 140px);
    padding-right: 48px;
    z-index: 10;
  }
}

.sticky-content-transition {
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.sticky-content-out {
  opacity: 0;
  transform: translateY(-16px);
}

.sticky-content-in {
  opacity: 1;
  transform: translateY(0);
}

.progress-bars {
  display: flex;
  gap: 16px;
  margin-top: auto;
}

.progress-track {
  height: 4px;
  flex: 1;
  background-color: var(--border-color);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background-color: var(--brand-accent);
  transition: width 0.4s ease-in-out;
}

.progress-fill.w-full {
  width: 100%;
}

.progress-fill.w-0 {
  width: 0%;
}

.how-we-think__panels {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 35vh;
  padding-bottom: 25vh;
}

@media (min-width: 768px) {
  .how-we-think__panels {
    width: 58%;
  }
}

.scroll-panel {
  display: flex;
  flex-direction: column;
  min-height: 70vh;
  justify-content: center;
}

.scroll-panel__mobile {
  display: block;
  margin-bottom: 32px;
}

@media (min-width: 768px) {
  .scroll-panel__mobile {
    display: none;
  }
}

.panel-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  width: 100%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  transition: border-color 0.5s ease, box-shadow 0.5s ease;
}

.panel-card.is-active-card {
  border-color: rgba(255, 107, 80, 0.4);
  box-shadow: 0 20px 50px rgba(255, 107, 80, 0.15);
}

.panel-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1), filter 0.7s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  filter: brightness(0.5) grayscale(0.3);
  transform: scale(0.94);
  opacity: 0.5;
}

.panel-image.is-active {
  filter: brightness(1) grayscale(0);
  transform: scale(1.03);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   15. Comprehensive Mobile & Cross-Device Responsiveness
   -------------------------------------------------------------------------- */
/* Universal text overflow prevention */
h1,
h2,
h3,
h4,
h5,
h6,
p,
span,
a {
  overflow-wrap: break-word;
  word-break: break-word;
}

/* Small Smart Phones & Foldables (< 480px) */
@media (max-width: 480px) {
  :root {
    --margin-mobile: 16px;
    --section-gap-mobile: 60px;
  }

  .font-display-2xl {
    font-size: clamp(38px, 10vw, 56px);
  }

  .font-display-xl {
    font-size: clamp(32px, 8vw, 44px);
  }

  .font-headline-lg {
    font-size: clamp(24px, 6vw, 32px);
  }

  .hero {
    min-height: auto;
    padding-top: 110px;
    padding-bottom: 40px;
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
    padding: 14px 24px;
    font-size: 15px;
  }

  .hero__card-swap-container {
    height: 320px;
  }

  .card-swap-wrapper {
    width: min(300px, 88vw);
    height: 230px;
  }

  .card-swap-card {
    width: min(300px, 88vw);
    height: 230px;
  }

  .bento-card {
    padding: 24px 20px;
  }

  .work-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .browser-frame__header {
    padding: 0 10px;
  }

  .browser-frame__address {
    max-width: 140px;
    font-size: 10px;
    padding: 2px 8px;
  }

  .browser-frame__actions {
    display: none;
  }

  .work-card__content {
    padding: 20px 16px;
  }

  .bento-card[style*="padding: 40px"] {
    padding: 24px 16px !important;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .footer__links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}

/* Tablets & Mobile Devices (< 768px) */
@media (max-width: 768px) {
  .how-we-think__panels {
    gap: 40px;
    padding-bottom: 40px;
  }

  .scroll-panel {
    min-height: auto;
  }

  .scroll-panel__mobile {
    margin-bottom: 16px;
  }

  .panel-card {
    aspect-ratio: 16 / 10;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .mobile-nav {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
}

/* Medium Tablets & Small Laptops (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
  .hero__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* --------------------------------------------------------------------------
   Social Media Buttons (Themed)
   -------------------------------------------------------------------------- */
.social-links-container {
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.social-links-grid {
  display: flex;
  gap: 10px;
  align-items: center;
}

.social-icon-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 12px;
  border-radius: 12px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-body);
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.social-icon-btn:hover {
  background-color: var(--brand-accent-glow);
  border-color: var(--brand-accent);
  color: var(--brand-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(255, 107, 80, 0.25);
}

.social-icon-btn svg {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.social-icon-btn:hover svg {
  transform: scale(1.15);
}

@media (max-width: 480px) {
  .social-links-grid {
    flex-direction: column;
  }
  .social-icon-btn {
    width: 100%;
  }
}