.hero-page {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  background-color: #ffffff;
  background-image: radial-gradient(125% 125% at 50% 0%, #ffffff 40%, rgba(79, 70, 229, 0.05) 70%, rgba(13, 148, 136, 0.03) 100%);
  display: block;
  overflow-y: auto;
  scroll-behavior: smooth;
  padding: 0;
  color: var(--text);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-page.fade-out {
  opacity: 0;
  transform: translateY(-20px);
  pointer-events: none;
}

#hero-stars {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.85; /* Soft display in light mode */
}

/* Elegant Tech Grid Overlay */
.hero-page::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at center, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(rgba(0, 0, 0, 0.01) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.01) 1px, transparent 1px);
  background-size: 24px 24px, 48px 48px, 48px 48px;
  z-index: 1;
  pointer-events: none;
}

.hero-container {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1.618fr 1fr;
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.hero-left-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  min-width: 0;
}

.hero-right-column {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 380px;
  width: 100%;
  margin: 0 auto;
}

.avatar-3d-wrapper {
  position: relative;
  width: min(100%, 380px);
  aspect-ratio: 1 / 1;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 900px;
}

#hero-3d-avatar {
  width: 100%;
  height: 100%;
  z-index: 2;
  cursor: grab;
}
#hero-3d-avatar:active {
  cursor: grabbing;
}

.avatar-3d-glow {
  position: absolute;
  width: 55%;
  height: 55%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.2) 0%, rgba(13, 148, 136, 0.08) 55%, transparent 100%);
  filter: blur(28px);
  z-index: 0;
  pointer-events: none;
  border-radius: 50%;
  animation: coreGlow 5s ease-in-out infinite;
}

@keyframes coreGlow {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.12); opacity: 1; }
}

@media (max-width: 768px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-6);
  }
  .hero-left-column {
    align-items: center;
    text-align: center;
    order: 2;
  }
  .hero-right-column {
    order: 1;
    max-width: 280px;
  }
}

.hero-badge {
  display: inline-block;
  border-radius: 999px;
  background-color: rgba(79, 70, 229, 0.05);
  padding: 6px 14px;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid rgba(79, 70, 229, 0.15);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
  text-transform: uppercase;
  animation: float 4s ease-in-out infinite;
}

.hero-heading {
  max-width: 760px;
  background: linear-gradient(135deg, #09090b 40%, #4f46e5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

@media (min-width: 640px) {
  .hero-heading { font-size: 3.2rem; }
}

@media (min-width: 768px) {
  .hero-heading { font-size: 4.2rem; }
}

.hero-subheading {
  max-width: 580px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 32px;
  font-weight: 500;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  background-color: var(--accent);
  padding: 14px 32px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 20px rgba(79, 70, 229, 0.3);
  transition: var(--transition);
  outline: none;
}

.hero-btn:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 6px 24px rgba(79, 70, 229, 0.4);
  transform: translateY(-1px);
}

.hero-btn:active {
  transform: translateY(0);
}

.hero-btn svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
  stroke-width: 2.5;
  fill: none;
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

/* Back-to-home button in App Header */
.btn-small.home-btn {
  background: var(--surface);
  border: 1px solid var(--border2);
  color: var(--text-secondary);
  margin-right: 6px;
}
.btn-small.home-btn:hover {
  background: var(--surface2);
  color: var(--text);
}

/* Scroll indicator — centered under hero grid */
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  animation: bounce-scroll 2s infinite;
  opacity: 0.7;
  pointer-events: none;
  transition: opacity 0.3s;
}

.hero-scroll-indicator .mouse {
  width: 20px;
  height: 30px;
  border: 2px solid var(--muted);
  border-radius: 10px;
  display: flex;
  justify-content: center;
  padding-top: 5px;
}

.hero-scroll-indicator .wheel {
  width: 4px;
  height: 6px;
  background-color: var(--accent);
  border-radius: 2px;
  animation: scrollWheel 1.5s infinite;
}

@keyframes scrollWheel {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(6px); opacity: 0; }
}

@keyframes bounce-scroll {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-4px); }
}

/* Hero Page Header Navigation */
.hero-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
  border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

.hero-header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hero-header-btn {
  background: var(--accent);
  color: #ffffff;
  border: none;
  padding: 8px 20px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.15);
  transition: var(--transition);
}

.hero-header-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Hero Section Spacing Adjustments */
.hero-hero-section {
  position: relative;
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 24px;
}

/* Features — strict 3×2 bento grid on desktop */
.hero-features-section {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-8) var(--page-padding) 120px;
  z-index: 10;
}

.features-header {
  text-align: center;
  margin-bottom: var(--space-7);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.features-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.features-subtitle {
  font-size: 13px;
  color: var(--muted);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.6;
}

.hero-features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
  align-items: stretch;
}

.hero-feature-card {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: var(--r-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: var(--transition);
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: var(--space-3);
  min-height: 180px;
  height: 100%;
}

.hero-feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79, 70, 229, 0.2);
  box-shadow: var(--shadow-md);
  background: #ffffff;
}

.hero-feature-card.revealed:hover {
  transform: translateY(-4px) scale(1.01);
}

.feature-card-icon {
  font-size: 20px;
  width: 44px;
  height: 44px;
  background: rgba(79, 70, 229, 0.06);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.feature-card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.feature-card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .hero-features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .hero-header {
    padding: 0 20px;
  }
  .hero-features-grid {
    grid-template-columns: 1fr;
  }
  .hero-feature-card {
    min-height: auto;
  }
}