/* ==========================================================================
   1. Design System & CSS custom properties
   ========================================================================== */

:root {
  /* Color Palette - Creative Studio at Golden Hour */
  --bg-base: #0f1622;         /* light navy base */
  --bg-elevated: #162030;     /* navy card surfaces */
  --bg-deep: #0a0f18;         /* deepest navy pockets */
  --accent-amber: #e8a830;    /* primary golden light (Studio) */
  --accent-glow: #f0b84a;     /* highlight / hover glow */
  --accent-bronze: #b07d3a;   /* Core */
  --accent-greengold: #a8a342; /* Venture */
  --accent-sienna: #c4683a;   /* secondary warmth */
  --text-primary: #f5ead8;    /* warm cream, never pure white */
  --text-muted: #b09a7e;      /* dusty parchment */
  --border-soft: rgba(232, 168, 48, 0.15);
  --border-active: rgba(232, 168, 48, 0.35);

  /* Typography */
  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans: 'Sora', system-ui, -apple-system, sans-serif;
  
  /* Layout & Animations */
  --radius-lg: 14px;
  --radius-md: 8px;
  --radius-sm: 4px;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   2. Base Styles & Resets
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-deep);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

/* ==========================================================================
   3. Atmosphere, Texture & Backgrounds
   ========================================================================== */

/* Film Grain Overlay */
.grain-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.35; /* Crisp but non-distracting */
}

.grain-overlay {
  width: 100%;
  height: 100%;
}

/* Ambient Moving Glows - "Golden Hour" */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: -1;
  opacity: 0.18;
}

#ambient-glow-1 {
  width: 70vmax;
  height: 70vmax;
  background: radial-gradient(circle, var(--accent-amber) 0%, transparent 70%);
  top: -20%;
  left: -10%;
  animation: floatGlow1 40s ease-in-out infinite alternate;
}

#ambient-glow-2 {
  width: 60vmax;
  height: 60vmax;
  background: radial-gradient(circle, var(--accent-sienna) 0%, transparent 70%);
  bottom: -20%;
  right: -10%;
  animation: floatGlow2 45s ease-in-out infinite alternate;
}

@keyframes floatGlow1 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(8vw, 10vh) scale(1.1); }
  100% { transform: translate(-5vw, 18vh) scale(0.9); }
}

@keyframes floatGlow2 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-10vw, -8vh) scale(1.15); }
  100% { transform: translate(4vw, 4vh) scale(0.85); }
}

/* ==========================================================================
   4. Header & Navigation
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(232, 168, 48, 0.06);
  transition: var(--transition-smooth);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  font-style: italic;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-spark {
  color: var(--accent-amber);
  text-shadow: 0 0 10px rgba(232, 168, 48, 0.6);
  font-style: normal;
  display: inline-block;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.main-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent-glow);
  text-shadow: 0 0 8px rgba(240, 184, 74, 0.2);
}

/* ==========================================================================
   5. Hero Section
   ========================================================================== */

.hero-section {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: 800px;
  margin-top: -2rem;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent-sienna);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  text-shadow: 0 0 60px rgba(232, 168, 48, 0.12);
}

.hero-tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.25rem, 3.5vw, 1.75rem);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
  line-height: 1.4;
}

.hero-cta {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  align-items: center;
}

.cta-button {
  background-color: var(--accent-amber);
  color: var(--bg-deep);
  font-weight: 600;
  padding: 0.9rem 2.2rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(232, 168, 48, 0.25);
  font-size: 0.95rem;
}

.cta-button:hover {
  background-color: var(--accent-glow);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(240, 184, 74, 0.4);
}

.cta-secondary {
  border: 1px solid var(--border-soft);
  color: var(--text-primary);
  padding: 0.9rem 2.2rem;
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: 0.95rem;
  background-color: rgba(232, 168, 48, 0.02);
}

.cta-secondary:hover {
  background-color: rgba(232, 168, 48, 0.06);
  border-color: var(--accent-amber);
  transform: translateY(-2px);
}

/* ==========================================================================
   6. Pillars Section
   ========================================================================== */

.pillars-section,
.showcase-section,
.about-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pillar-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.pillar-icon-wrapper {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  transition: var(--transition-smooth);
}

.pillar-icon {
  width: 26px;
  height: 26px;
}

.pillar-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.pillar-tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Card-specific Accents */
.studio-pillar {
  --pillar-accent: var(--accent-amber);
}
.studio-pillar .pillar-icon-wrapper {
  background-color: rgba(232, 168, 48, 0.08);
  color: var(--accent-amber);
}
.studio-pillar .pillar-name {
  color: var(--accent-amber);
}

.core-pillar {
  --pillar-accent: var(--accent-bronze);
}
.core-pillar .pillar-icon-wrapper {
  background-color: rgba(176, 125, 58, 0.08);
  color: var(--accent-bronze);
}
.core-pillar .pillar-name {
  color: var(--accent-bronze);
}

.venture-pillar {
  --pillar-accent: var(--accent-greengold);
}
.venture-pillar .pillar-icon-wrapper {
  background-color: rgba(168, 163, 66, 0.08);
  color: var(--accent-greengold);
}
.venture-pillar .pillar-name {
  color: var(--accent-greengold);
}

/* Card Hover States */
.pillar-card:hover {
  transform: translateY(-6px);
  border-color: var(--pillar-accent);
  box-shadow: 0 15px 45px rgba(0, 0, 0, 0.35), 0 0 30px rgba(var(--pillar-accent), 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top left, rgba(255,255,255,0.03), transparent 70%);
  pointer-events: none;
}
.pillar-card:hover .pillar-icon-wrapper {
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(255,255,255,0.02);
}

/* ==========================================================================
   7. Agent Showcase
   ========================================================================== */

/* Filter Row */
.filter-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 3rem;
}

.filter-buttons {
  display: flex;
  background-color: rgba(10, 15, 24, 0.4);
  padding: 0.35rem;
  border-radius: 30px;
  border: 1px solid var(--border-soft);
  gap: 0.25rem;
}

.filter-btn {
  background: none;
  border: none;
  outline: none;
  font-family: var(--font-sans);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.6rem 1.75rem;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn:hover {
  color: var(--text-primary);
}

.filter-btn.active {
  background-color: var(--accent-amber);
  color: var(--bg-deep);
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(232, 168, 48, 0.25);
}

/* Showcase Grid */
.showcase-grid-container {
  min-height: 400px;
  position: relative;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.75rem;
  transition: var(--transition-smooth);
}

.showcase-loading {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  padding: 6rem 0;
  gap: 1rem;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(232, 168, 48, 0.1);
  border-top-color: var(--accent-amber);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Agent Card Styles */
.agent-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  position: relative;
  transition: var(--transition-smooth);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.agent-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.agent-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

/* Category Badge */
.category-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  white-space: nowrap;
}

.badge-studio {
  background-color: rgba(232, 168, 48, 0.08);
  color: var(--accent-amber);
  border: 1px solid rgba(232, 168, 48, 0.2);
}

.badge-core {
  background-color: rgba(176, 125, 58, 0.08);
  color: var(--accent-bronze);
  border: 1px solid rgba(176, 125, 58, 0.2);
}

.badge-venture {
  background-color: rgba(168, 163, 66, 0.08);
  color: var(--accent-greengold);
  border: 1px solid rgba(168, 163, 66, 0.2);
}

.agent-description {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.agent-footer {
  width: 100%;
  display: flex;
  justify-content: flex-end;
  margin-top: auto;
}

.agent-link-arrow {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 500;
}

.agent-link-arrow svg {
  width: 16px;
  height: 16px;
  transition: transform 0.2s ease;
}

/* Agent Card Hover */
.agent-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.agent-card.studio-card:hover { border-color: var(--accent-amber); }
.agent-card.core-card:hover { border-color: var(--accent-bronze); }
.agent-card.venture-card:hover { border-color: var(--accent-greengold); }

.agent-card:hover .agent-link-arrow {
  color: var(--text-primary);
}
.agent-card:hover .agent-link-arrow svg {
  transform: translateX(4px);
}

/* ==========================================================================
   8. About / Philosophy
   ========================================================================== */

.about-card-container {
  display: flex;
  justify-content: center;
}

.about-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 4rem 3.5rem;
  max-width: 850px;
  position: relative;
  text-align: center;
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Subtle glow behind about card */
.about-card::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(232, 168, 48, 0.06) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
}

.about-spark {
  display: inline-block;
  font-size: 2.25rem;
  color: var(--accent-amber);
  text-shadow: 0 0 15px rgba(232, 168, 48, 0.6);
  margin-bottom: 1.5rem;
}

.about-title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 700;
  margin-bottom: 2rem;
  letter-spacing: -0.01em;
}

.about-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  line-height: 1.7;
  color: var(--text-primary);
  position: relative;
}

.about-credit {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.credit-link {
  color: var(--accent-amber);
  font-weight: 600;
  border-bottom: 1px dashed rgba(232, 168, 48, 0.4);
  transition: var(--transition-fast);
}

.credit-link:hover {
  color: var(--accent-glow);
  border-bottom-color: var(--accent-glow);
}

/* ==========================================================================
   9. Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border-soft);
  background-color: var(--bg-deep);
  color: var(--text-muted);
  padding: 5rem 2rem 3rem;
  margin-top: 6rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-branding {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  font-style: italic;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-tagline {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: normal;
}

.footer-column h4 {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
}

.footer-column ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-column a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-column a:hover {
  color: var(--accent-glow);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid rgba(232, 168, 48, 0.06);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(176, 154, 126, 0.5);
}

/* ==========================================================================
   10. Scroll & Reveal Animations
   ========================================================================== */

/* Initially hidden elements */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

/* State when item enters viewport */
.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered load in for Hero */
.fade-in-on-load {
  opacity: 0;
  transform: translateY(20px);
  animation: loadIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-eyebrow.fade-in-on-load { animation-delay: 0.1s; }
.hero-title.fade-in-on-load { animation-delay: 0.25s; }
.hero-tagline.fade-in-on-load { animation-delay: 0.4s; }
.hero-cta.fade-in-on-load { animation-delay: 0.55s; }

@keyframes loadIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   11. Responsive Media Queries
   ========================================================================== */

/* Tablet Layout (600px - 900px) */
@media (max-width: 900px) {
  .site-header {
    background-color: rgba(15, 22, 34, 0.85); /* Slightly solid bg for clarity */
  }

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

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

  .footer-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
  }
}

/* Mobile Layout (< 600px) */
@media (max-width: 600px) {
  .header-container {
    padding: 1rem 1.5rem;
  }

  .main-nav ul {
    gap: 1.25rem;
  }

  .main-nav a {
    font-size: 0.8rem;
  }

  .hero-section {
    padding-top: 7rem;
    min-height: 80vh;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    gap: 1rem;
  }

  .cta-button, .cta-secondary {
    width: 100%;
    padding: 0.85rem 1.5rem;
  }

  .pillars-grid,
  .showcase-grid {
    grid-template-columns: 1fr;
  }

  .pillar-card {
    padding: 2.5rem 1.5rem;
  }

  .about-card {
    padding: 3rem 1.5rem;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .footer-branding {
    align-items: center;
    text-align: center;
  }

  .footer-column {
    text-align: center;
  }

  /* Reduce opacity of noise filter on small screens to prevent muddy look */
  .grain-container {
    opacity: 0.22;
  }
}

/* Accessibility: Support prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  .ambient-glow {
    animation: none !important;
  }

  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .fade-in-on-load {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
  }
}

/* ==========================================================================
   12. Portfolio Landing Page Styles
   ========================================================================== */

.hero-tagline-portfolio {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-soft);
  background-color: rgba(22, 32, 48, 0.4);
  color: var(--text-muted);
  transition: var(--transition-smooth);
}

.social-link:hover {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
  box-shadow: 0 0 15px rgba(232, 168, 48, 0.25);
  transform: translateY(-2px);
}

/* Featured Section - Catalyst Subpage Callout */
.featured-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
}

.featured-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 4rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.featured-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top left, rgba(232, 168, 48, 0.08), transparent 60%);
  pointer-events: none;
}

.featured-card:hover {
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.45), 0 0 35px rgba(232, 168, 48, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.featured-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  z-index: 2;
}

.featured-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-amber);
  margin-bottom: 1rem;
}

.featured-title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.featured-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.featured-cta-btn {
  background-color: var(--accent-amber);
  color: var(--bg-deep);
  font-weight: 600;
  padding: 1rem 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgba(232, 168, 48, 0.25);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  transition: var(--transition-smooth);
}

.featured-cta-btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.2s ease;
}

.featured-cta-btn:hover {
  background-color: var(--accent-glow);
  box-shadow: 0 8px 30px rgba(240, 184, 74, 0.4);
  transform: translateY(-2px);
}

.featured-cta-btn:hover svg {
  transform: translateX(4px);
}

/* Featured Side Graphics representing three pillars */
.featured-graphic {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 300px;
  z-index: 1;
}

.graphic-ring {
  position: absolute;
  border: 1px dashed rgba(232, 168, 48, 0.15);
  border-radius: 50%;
  animation: spinRing 60s linear infinite;
}

.ring-outer {
  width: 280px;
  height: 280px;
}

.ring-inner {
  width: 180px;
  height: 180px;
  animation-duration: 30s;
  animation-direction: reverse;
}

.graphic-center {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: rgba(232, 168, 48, 0.05);
  border: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-amber);
  font-size: 2rem;
  box-shadow: 0 0 30px rgba(232, 168, 48, 0.1);
}

@keyframes spinRing {
  to { transform: rotate(360deg); }
}

/* Categories Grid styling */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.category-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: var(--transition-smooth);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 45px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.category-card.ai-cat:hover { border-color: var(--accent-amber); box-shadow: 0 15px 45px rgba(0,0,0,0.35), 0 0 25px rgba(232, 168, 48, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.08); }
.category-card.bme-cat:hover { border-color: var(--accent-bronze); box-shadow: 0 15px 45px rgba(0,0,0,0.35), 0 0 25px rgba(176, 125, 58, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.08); }
.category-card.xr-cat:hover { border-color: var(--accent-sienna); box-shadow: 0 15px 45px rgba(0,0,0,0.35), 0 0 25px rgba(196, 104, 58, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.08); }
.category-card.dl-cat:hover { border-color: var(--accent-greengold); box-shadow: 0 15px 45px rgba(0,0,0,0.35), 0 0 25px rgba(168, 163, 66, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.08); }

.category-icon-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.category-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

.category-card.ai-cat .category-title { color: var(--accent-amber); }
.category-card.bme-cat .category-title { color: var(--accent-bronze); }
.category-card.xr-cat .category-title { color: var(--accent-sienna); }
.category-card.dl-cat .category-title { color: var(--accent-greengold); }

.category-card.ai-cat .pillar-icon-wrapper { background-color: rgba(232, 168, 48, 0.08); color: var(--accent-amber); }
.category-card.bme-cat .pillar-icon-wrapper { background-color: rgba(176, 125, 58, 0.08); color: var(--accent-bronze); }
.category-card.xr-cat .pillar-icon-wrapper { background-color: rgba(196, 104, 58, 0.08); color: var(--accent-sienna); }
.category-card.dl-cat .pillar-icon-wrapper { background-color: rgba(168, 163, 66, 0.08); color: var(--accent-greengold); }

.project-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
  width: 100%;
}

.project-item {
  border-bottom: 1px solid rgba(232, 168, 48, 0.05);
  padding-bottom: 1rem;
}

.project-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.project-name-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.35rem;
}

.project-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.project-link-icon {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: var(--transition-fast);
}

.project-link-icon svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.project-item:hover .project-link-icon {
  color: var(--text-primary);
}

.project-item:hover .project-link-icon svg {
  transform: translate(2px, -2px);
}

.project-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

.tag-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  font-size: 0.7rem;
  font-weight: 500;
  background-color: rgba(10, 15, 24, 0.4);
  color: var(--text-muted);
  border: 1px solid rgba(232, 168, 48, 0.08);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

/* Responsive adjustment for categories */
@media (max-width: 900px) {
  .featured-card {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding: 3rem;
  }
  
  .featured-graphic {
    height: 200px;
    order: -1;
  }
  
  .categories-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   13. Centered Homepage Hero Card
   ========================================================================== */

.hero-card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 4rem 3.5rem;
  max-width: 650px;
  width: 100%;
  position: relative;
  text-align: center;
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: var(--transition-smooth);
  margin: 0 auto;
  z-index: 2;
}

.hero-card::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(232, 168, 48, 0.04) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
}

.hero-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-amber);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 25px rgba(232, 168, 48, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.hero-spark {
  display: inline-block;
  font-size: 2.25rem;
  color: var(--accent-amber);
  text-shadow: 0 0 15px rgba(232, 168, 48, 0.6);
  margin-bottom: 1.25rem;
}

.hero-card-title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.hero-card-subtitle {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent-sienna);
  margin-bottom: 1.5rem;
}

.hero-card-divider {
  width: 50px;
  height: 1px;
  background-color: var(--border-soft);
  margin: 0 auto 1.75rem;
}

.hero-card-tagline {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.hero-card-cta {
  display: flex;
  justify-content: center;
}