/* ==========================================================================
   APPU DARK MARKETING LANDING PAGE STYLESHEET
   Design: Obsidian Dark Theme, High-End Typography & Fluid Adaptive Layout
   ========================================================================== */

/* Page View Visibility Controller */
body.view-landing {
  background: #030a16 !important;
  color: #f5f8ff !important;
  overflow-x: hidden;
}

body.view-landing .ambient-orb {
  display: none !important;
}

body.view-landing #marketing-landing {
  display: block !important;
}

body.view-landing #app-shell {
  display: none !important;
}

body.view-app #marketing-landing {
  display: none !important;
}

body.view-app #app-shell {
  display: grid !important;
}

/* Transition State between Landing and App Shell */
body.is-transitioning-to-app {
  overflow: hidden !important;
  background: #020712 !important;
}

body.view-landing.is-transitioning-to-app #app-shell,
body.is-transitioning-to-app #app-shell {
  display: grid !important;
  pointer-events: none !important;
}

body.is-transitioning-to-app #marketing-landing {
  pointer-events: none !important;
}

/* Base Marketing Landing Container */
.marketing-landing {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background-color: #040b18;
  /* Chalkboard / graph-paper surface: edge vignette, ambient subject-glows, and a
     real two-axis ruled grid (major 140px + fine 28px) -- the schoolbook canvas the
     chalk marks and science objects are drawn on. */
  background-image:
    radial-gradient(ellipse 130% 100% at 50% 38%, transparent 52%, rgba(1, 5, 12, 0.62) 100%),
    radial-gradient(ellipse at 88% 8%, rgba(251, 191, 36, 0.12) 0%, transparent 45%),
    radial-gradient(ellipse at 10% 18%, rgba(14, 165, 233, 0.16) 0%, transparent 45%),
    radial-gradient(circle at 50% 6%, rgba(99, 102, 241, 0.14) 0%, transparent 52%),
    radial-gradient(ellipse at 50% 90%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 92% 72%, rgba(52, 211, 153, 0.1) 0%, transparent 42%),
    repeating-linear-gradient(to right,  rgba(125, 211, 252, 0.05) 0 1px, transparent 1px 140px),
    repeating-linear-gradient(to bottom, rgba(125, 211, 252, 0.05) 0 1px, transparent 1px 140px),
    repeating-linear-gradient(to right,  rgba(148, 180, 220, 0.03) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(to bottom, rgba(148, 180, 220, 0.03) 0 1px, transparent 1px 28px);
  color: #f5f8ff;
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  box-sizing: border-box;
}

.marketing-landing *,
.marketing-landing *::before,
.marketing-landing *::after {
  box-sizing: border-box;
}

/* --------------------------------------------------------------------------
   HEADER
   -------------------------------------------------------------------------- */
.landing-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: rgba(3, 10, 22, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(151, 184, 226, 0.14);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  transition: box-shadow 0.2s ease;
}

.landing-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.landing-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  cursor: pointer;
}

.landing-brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: contain;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.landing-brand-text {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.landing-brand-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.landing-brand-by {
  font-size: 0.85rem;
  font-weight: 500;
  color: #94a3b8;
}

.landing-header-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* Language Dropdown */
.landing-lang-dropdown {
  position: relative;
}

.landing-lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  background: rgba(8, 20, 39, 0.8);
  border: 1px solid rgba(151, 184, 226, 0.2);
  border-radius: 9999px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #e2e8f0;
  cursor: pointer;
  transition: all 0.2s ease;
}

.landing-lang-trigger:hover,
.landing-lang-trigger[aria-expanded="true"] {
  background: rgba(15, 28, 52, 0.95);
  border-color: rgba(56, 189, 248, 0.45);
  color: #ffffff;
}

.landing-lang-trigger .fa-chevron-down {
  font-size: 0.7rem;
  color: #94a3b8;
  transition: transform 0.2s ease;
}

.landing-lang-trigger[aria-expanded="true"] .fa-chevron-down {
  transform: rotate(180deg);
}

.landing-lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: #081427;
  border: 1px solid rgba(151, 184, 226, 0.22);
  border-radius: 14px;
  padding: 0.4rem;
  list-style: none;
  min-width: 170px;
  box-shadow: 0 16px 36px -4px rgba(0, 0, 0, 0.6), 0 4px 12px -2px rgba(0, 0, 0, 0.4);
  z-index: 150;
  margin: 0;
}

.landing-lang-menu li {
  padding: 0.6rem 0.9rem;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: #cbd5e1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.15s ease, color 0.15s ease;
}

.landing-lang-menu li:hover {
  background: rgba(30, 48, 80, 0.65);
  color: #38bdf8;
}

.landing-lang-menu li.is-selected {
  font-weight: 700;
  color: #38bdf8;
  background: rgba(14, 165, 233, 0.18);
}

/* Sign In Header Button */
.landing-btn-signin {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.52rem 1.25rem;
  background: rgba(8, 20, 39, 0.85);
  border: 1.5px solid rgba(151, 184, 226, 0.28);
  border-radius: 9999px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  color: #f1f5f9;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.landing-btn-signin:hover {
  border-color: #38bdf8;
  color: #38bdf8;
  background: rgba(14, 27, 49, 0.95);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(56, 189, 248, 0.25);
}

/* Theme toggle (dark / light) in the landing header */
.landing-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 9999px;
  background: rgba(8, 20, 39, 0.8);
  border: 1px solid rgba(151, 184, 226, 0.2);
  color: #fcd34d;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, color 0.2s ease;
}
.landing-theme-toggle:hover {
  background: rgba(15, 28, 52, 0.95);
  border-color: rgba(56, 189, 248, 0.45);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   HERO SECTION (2-Column Desktop, Stacked Mobile) - Kid-Friendly Playful Premium
   -------------------------------------------------------------------------- */
.landing-hero {
  position: relative;
  overflow: visible;
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(1.5rem, 2.5vw, 2.5rem) 1.5rem clamp(1.25rem, 2vw, 2rem);
}

/* High-Craft Ambient Aurora & Parallax Depth Field */
.landing-playful-backdrop {
  position: absolute;
  /* Vertical bleed only: a horizontal -6% bleed pushed the page 6% wider than the
     viewport at tablet widths (e.g. +49px at 820px). The layer is transparent and
     clips its own children, so dropping the side bleed is visually identical. */
  inset: -12% 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

/* Soft Ambient Color Glow Aurora Blooms */
.landing-aurora-glow,
.landing-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(65px);
  pointer-events: none;
  opacity: 0.55;
  will-change: transform;
}

.aurora-amber,
.blob-warm-amber {
  top: 4%;
  right: 14%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.22) 0%, rgba(245, 158, 11, 0.06) 60%, transparent 80%);
}

.aurora-cyan,
.blob-electric-cyan {
  bottom: 8%;
  left: 3%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.22) 0%, rgba(56, 189, 248, 0.05) 60%, transparent 80%);
}

.aurora-purple,
.blob-soft-purple {
  top: 36%;
  left: 36%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.18) 0%, rgba(99, 102, 241, 0.04) 60%, transparent 80%);
}

.aurora-mint,
.blob-mint-glow {
  bottom: 16%;
  right: 10%;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.18) 0%, rgba(16, 185, 129, 0.04) 60%, transparent 80%);
}

/* Sparse Field of 12 Soft Blurred Depth-Orbs (Cursor-aware Parallax) */
.depth-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  user-select: none;
  will-change: transform;
  transition: transform 0.14s cubic-bezier(0.16, 1, 0.3, 1);
}

.depth-orb.orb-1  { top: 12%; left: 8%;  width: 22px; height: 22px; background: radial-gradient(circle, rgba(14, 165, 233, 0.45) 0%, transparent 80%); filter: blur(5px); }
.depth-orb.orb-2  { top: 22%; left: 30%; width: 34px; height: 34px; background: radial-gradient(circle, rgba(245, 158, 11, 0.4) 0%, transparent 80%); filter: blur(8px); }
.depth-orb.orb-3  { top: 72%; left: 14%; width: 28px; height: 28px; background: radial-gradient(circle, rgba(168, 85, 247, 0.35) 0%, transparent 80%); filter: blur(6px); }
.depth-orb.orb-4  { top: 85%; left: 44%; width: 42px; height: 42px; background: radial-gradient(circle, rgba(16, 185, 129, 0.35) 0%, transparent 80%); filter: blur(10px); }
.depth-orb.orb-5  { top: 8%;  right: 28%; width: 26px; height: 26px; background: radial-gradient(circle, rgba(56, 189, 248, 0.4) 0%, transparent 80%); filter: blur(6px); }
.depth-orb.orb-6  { top: 28%; right: 46%; width: 36px; height: 36px; background: radial-gradient(circle, rgba(251, 191, 36, 0.38) 0%, transparent 80%); filter: blur(9px); }
.depth-orb.orb-7  { top: 64%; right: 36%; width: 20px; height: 20px; background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, transparent 80%); filter: blur(5px); }
.depth-orb.orb-8  { top: 88%; right: 18%; width: 32px; height: 32px; background: radial-gradient(circle, rgba(14, 165, 233, 0.38) 0%, transparent 80%); filter: blur(8px); }
.depth-orb.orb-9  { top: 48%; left: 6%;  width: 18px; height: 18px; background: radial-gradient(circle, rgba(245, 158, 11, 0.42) 0%, transparent 80%); filter: blur(4px); }
.depth-orb.orb-10 { top: 18%; right: 8%; width: 30px; height: 30px; background: radial-gradient(circle, rgba(168, 85, 247, 0.35) 0%, transparent 80%); filter: blur(7px); }
.depth-orb.orb-11 { bottom: 28%; right: 4%; width: 40px; height: 40px; background: radial-gradient(circle, rgba(52, 211, 153, 0.32) 0%, transparent 80%); filter: blur(10px); }
.depth-orb.orb-12 { top: 42%; left: 22%; width: 24px; height: 24px; background: radial-gradient(circle, rgba(14, 165, 233, 0.35) 0%, transparent 80%); filter: blur(6px); }

/* Living Science & Geometric 3D Objects (Crisp SVG, Hairline Strokes, Translucent Fills) */
.sci-obj {
  position: absolute;
  pointer-events: none;
  user-select: none;
  z-index: 1;
  will-change: transform;
}

.sci-obj-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  will-change: transform;
}

.sci-svg {
  display: block;
  overflow: visible;
  filter: drop-shadow(0 4px 14px rgba(56, 189, 248, 0.22));
}

/* Placements & Spatial Depths (Balanced density, breathing room) */
.obj-cube {
  top: 7%;
  left: 3.5%;
  opacity: 0.85;
}

.obj-atom {
  top: 13%;
  left: 47%;
  opacity: 0.9;
}

.obj-planet {
  top: 7%;
  right: 7%;
  opacity: 0.85;
}

.obj-molecule {
  top: 76%;
  left: 4%;
  opacity: 0.75;
}

.obj-polyhedron {
  top: 82%;
  left: 42%;
  opacity: 0.8;
}

.obj-dna {
  top: 73%;
  right: 4%;
  opacity: 0.8;
}

.obj-torus {
  top: 42%;
  left: 1.5%;
  opacity: 0.7;
}

.obj-math {
  top: 22%;
  left: 23%;
  opacity: 0.65;
}

/* Backward compatibility motif rules if needed */
.landing-vector-glyph,
.landing-floating-motif {
  position: absolute;
  pointer-events: none;
  user-select: none;
}

/* ==========================================================================
   HERO ENTRANCE CHOREOGRAPHY (~900ms, cubic-bezier(0.16, 1, 0.3, 1), No FOUC)
   ========================================================================== */
@keyframes heroFadeRise {
  0% {
    opacity: 0;
    transform: translateY(18px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroClipWipeUp {
  0% {
    opacity: 0.01;
    clip-path: inset(100% 0 0 0);
    transform: translateY(22px);
  }
  30% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    clip-path: inset(0 0 0 0);
    transform: translateY(0);
  }
}

@keyframes highlightGradientSweep {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes cardScaleRise {
  0% {
    opacity: 0;
    transform: translateY(16px) scale(0.96);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes bubblePopIn {
  0% {
    opacity: 0;
    transform: translateY(10px) scale(0.9);
  }
  60% {
    transform: translateY(-2px) scale(1.02);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes antennaPowerOn {
  0%, 15% {
    opacity: 0.2;
    filter: drop-shadow(0 0 0px rgba(245, 158, 11, 0));
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    filter: drop-shadow(0 0 12px rgba(245, 158, 11, 0.95));
    transform: scale(1.3);
  }
  100% {
    opacity: 1;
    filter: drop-shadow(0 0 5px rgba(245, 158, 11, 0.45));
    transform: scale(1);
  }
}

@keyframes eyesBlinkAwake {
  0%, 20% {
    opacity: 0.1;
    transform: scaleY(0.1);
  }
  35% {
    opacity: 1;
    transform: scaleY(1);
  }
  50% {
    opacity: 1;
    transform: scaleY(0.1);
  }
  65%, 100% {
    opacity: 1;
    transform: scaleY(1);
  }
}

@keyframes mascotWaveOnce {
  0% {
    transform: rotate(0deg);
  }
  20% {
    transform: rotate(-30deg);
  }
  40% {
    transform: rotate(10deg);
  }
  60% {
    transform: rotate(-24deg);
  }
  80% {
    transform: rotate(6deg);
  }
  100% {
    transform: rotate(0deg);
  }
}

.landing-hero-grid {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 2.75rem);
}

.landing-hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* Kicker Badge */
.landing-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 1rem;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.2) 0%, rgba(16, 185, 129, 0.16) 100%);
  border: 1.5px solid rgba(129, 140, 248, 0.35);
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #a5b4fc;
  margin-bottom: 0.85rem;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.18);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.landing-kicker:hover {
  transform: scale(1.03);
}

.landing-kicker-sparkle {
  color: #38bdf8;
  font-size: 0.88rem;
}

/* Hero Headline */
.landing-hero-title {
  font-family: 'Space Grotesk', -apple-system, sans-serif;
  font-size: clamp(1.75rem, 4.2vw, 3.65rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: #ffffff;
  margin: 0 0 0.85rem 0;
}

.landing-hero-highlight {
  background: linear-gradient(135deg, #818cf8 0%, #38bdf8 40%, #22d3ee 70%, #a78bfa 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline;
}

/* Hero Subtext */
.landing-hero-subtext {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.55;
  color: #94a3b8;
  margin: 0 0 1rem 0;
  max-width: 540px;
}

/* Grade Badge */
.landing-grade-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 1.05rem;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.18) 0%, rgba(5, 150, 105, 0.12) 100%);
  border: 1.5px solid rgba(52, 211, 153, 0.35);
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 800;
  color: #6ee7b7;
  margin-bottom: 1.35rem;
  box-shadow: 0 2px 10px rgba(16, 185, 129, 0.2);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.landing-grade-badge:hover {
  transform: translateY(-1.5px) scale(1.03);
}

/* Primary CTA Group */
.landing-cta-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

.landing-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  padding: 1.08rem 2.65rem;
  background: linear-gradient(135deg, #4f46e5 0%, #3b82f6 50%, #06b6d4 100%);
  color: #ffffff;
  border: none;
  border-radius: 9999px;
  font-family: inherit;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  cursor: pointer;
  box-shadow: 
    0 10px 24px -4px rgba(79, 70, 229, 0.4),
    0 4px 10px -2px rgba(6, 182, 212, 0.28);
  transition: transform 0.16s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.16s ease, background 0.2s ease;
  will-change: transform;
}

.landing-btn-primary:hover {
  transform: translateY(-2.5px);
  box-shadow: 
    0 16px 32px -4px rgba(79, 70, 229, 0.55),
    0 6px 16px -2px rgba(6, 182, 212, 0.38);
  background: linear-gradient(135deg, #4338ca 0%, #2563eb 50%, #0891b2 100%);
}

.landing-btn-primary:active {
  transform: scale(0.98);
  transition-duration: 0.08s;
}

.landing-btn-primary i {
  transition: transform 0.16s cubic-bezier(0.16, 1, 0.3, 1);
}

.landing-btn-primary:hover i {
  transform: translateX(3px);
}

.landing-cta-sub {
  font-size: 0.84rem;
  font-weight: 500;
  color: #94a3b8;
  padding-left: 0.5rem;
}

/* --------------------------------------------------------------------------
   RIGHT COLUMN: APPU MENTOR CARD + ROBOT MASCOT COMPANION
   -------------------------------------------------------------------------- */
.landing-hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
  z-index: 5;
  perspective: 1100px;
}

/* Playful Robot Mascot Companion */
.landing-mascot-companion {
  position: absolute;
  top: -24px;
  right: -24px;
  z-index: 25;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: auto;
  cursor: pointer;
  transform-origin: bottom center;
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.landing-mascot-companion:hover,
.landing-mascot-companion.is-hopping {
  transform: translateY(-8px) scale(1.06);
}

.landing-mascot-companion-speech {
  background: #081427;
  border: 1.5px solid #38bdf8;
  border-radius: 9999px;
  padding: 0.28rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 800;
  color: #38bdf8;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.35);
  margin-bottom: 2px;
  transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease, border-color 0.2s ease;
}

.landing-mascot-companion:hover .landing-mascot-companion-speech,
.landing-mascot-companion.is-hopping .landing-mascot-companion-speech {
  transform: translateY(-2px) scale(1.03);
  border-color: #58e9ff;
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.45);
}

.landing-mascot-companion-avatar {
  width: 82px;
  height: 82px;
  filter: drop-shadow(0 10px 22px rgba(14, 165, 233, 0.28));
  will-change: transform;
}

/* Mascot Arm Waves ONCE on entrance, and interactively when triggered */
.mascot-arm-right-group {
  transform-origin: 98px 68px;
}

.mascot-arm-right-group.is-waving {
  animation: mascotWaveInteractive 0.85s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

@keyframes mascotWaveInteractive {
  0%, 100% {
    transform: rotate(0deg);
  }
  30% {
    transform: rotate(-32deg);
  }
  70% {
    transform: rotate(12deg);
  }
}

/* Mascot Face Blinking */
.mascot-face-expr {
  transform-origin: 60px 66px;
  transition: transform 0.1s ease-out;
}

.mascot-face-expr.is-blinking {
  transform: scaleY(0.1) !important;
}

#mascot-antenna-bulb {
  transform-origin: 60px 14px;
}

/* Mentor Card with 3D Tilt & Moving Glare Sheen */
.landing-mentor-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: linear-gradient(180deg, rgba(11, 23, 44, 0.92) 0%, rgba(6, 16, 32, 0.94) 100%);
  border: 2px solid rgba(56, 189, 248, 0.25);
  border-radius: 32px;
  padding: 1.5rem 1.5rem 1.25rem;
  box-shadow: 
    0 24px 56px -12px rgba(0, 0, 0, 0.6),
    0 6px 20px -4px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease, border-color 0.25s ease;
}

.landing-mentor-card:hover {
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 
    0 30px 64px -14px rgba(0, 0, 0, 0.75),
    0 0 32px -4px rgba(56, 189, 248, 0.2);
}

.landing-card-glare {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 8;
  opacity: 0;
  mix-blend-mode: overlay;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0) 65%);
  transition: opacity 0.25s ease;
}

.landing-mentor-card.is-tilted .landing-card-glare {
  opacity: 1;
}

/* Speech Bubble */
.landing-speech-bubble {
  position: relative;
  background: #081427;
  border: 2px solid rgba(56, 189, 248, 0.35);
  border-radius: 22px;
  padding: 0.6rem 1.35rem;
  font-size: 0.98rem;
  font-weight: 800;
  color: #f1f5f9;
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.55), 0 0 16px rgba(56, 189, 248, 0.12);
  margin-bottom: 0.95rem;
  z-index: 10;
  transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.landing-speech-bubble:hover {
  transform: translateY(-2px);
}

.landing-bubble-tail {
  position: absolute;
  bottom: -9px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 9px;
  background: #081427;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.landing-bubble-tail::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 16px;
  height: 9px;
  border-left: 1.5px solid rgba(56, 189, 248, 0.35);
  border-right: 1.5px solid rgba(56, 189, 248, 0.35);
}

/* Mentor Portrait Image Frame */
.landing-mentor-frame {
  position: relative;
  width: min(100%, 280px);
  height: 280px;
  border-radius: 22px;
  overflow: hidden;
  background: #020712;
  border: 2px solid rgba(56, 189, 248, 0.22);
  box-shadow: 
    0 16px 36px -6px rgba(0, 0, 0, 0.5),
    inset 0 0 20px rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
}

.landing-mentor-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  user-select: none;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.landing-mentor-card:hover .landing-mentor-img {
  transform: scale(1.04);
}

/* Nameplate */
.landing-mentor-nameplate {
  margin-top: 0.95rem;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.6rem 1.25rem;
  background: rgba(8, 20, 39, 0.85);
  border: 1.5px solid rgba(151, 184, 226, 0.22);
  border-radius: 9999px;
  box-shadow: 0 4px 16px -2px rgba(0, 0, 0, 0.4);
}

.landing-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
  animation: landing-pulse-dot 2.2s infinite ease-in-out;
}

@keyframes landing-pulse-dot {
  0%, 100% { box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25); }
  50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0.1); }
}

.landing-nameplate-text {
  font-size: 0.88rem;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.landing-nameplate-text strong {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  color: #ffffff;
}

.landing-nameplate-dot {
  color: #64748b;
}

/* --------------------------------------------------------------------------
   VALUE PROPOSITION BAND
   -------------------------------------------------------------------------- */
.landing-value-band {
  width: 100%;
  background: rgba(6, 16, 32, 0.75);
  border-top: 1px solid rgba(151, 184, 226, 0.12);
  border-bottom: 1px solid rgba(151, 184, 226, 0.12);
  padding: 0.85rem 1.5rem;
}

.landing-value-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.98rem;
  font-weight: 700;
  color: #cbd5e1;
  text-align: center;
}

.landing-value-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.landing-value-item i {
  font-size: 1.05rem;
}

.landing-value-sep {
  color: rgba(151, 184, 226, 0.25);
  user-select: none;
}

/* --------------------------------------------------------------------------
   "START WITH ONE QUESTION" INTERACTIVE SECTION
   -------------------------------------------------------------------------- */
.landing-question-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(1.15rem, 2vw, 1.65rem) 1.5rem clamp(1rem, 1.8vw, 1.5rem);
}

.landing-question-container {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.landing-question-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: #ffffff;
  margin: 0 0 0.4rem 0;
}

.landing-question-subtitle {
  font-size: 1.05rem;
  color: #94a3b8;
  margin: 0 0 1.25rem 0;
}

/* Real Interactive Question Input Box */
.landing-question-box {
  width: 100%;
  margin-bottom: 1rem;
}

.landing-input-wrap {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(8, 20, 39, 0.88);
  border: 2px solid rgba(56, 189, 248, 0.25);
  border-radius: 26px;
  padding: 0.55rem 0.75rem 0.55rem 1.35rem;
  box-shadow: 0 16px 40px -6px rgba(0, 0, 0, 0.5), 0 0 20px -2px rgba(14, 165, 233, 0.1);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.landing-input-wrap:focus-within {
  border-color: #38bdf8;
  box-shadow: 0 20px 48px -6px rgba(0, 0, 0, 0.65), 0 0 0 4px rgba(56, 189, 248, 0.22);
}

.landing-input-icon {
  font-size: 1.15rem;
  color: #38bdf8;
}

.landing-question-input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 1.08rem;
  font-weight: 500;
  color: #ffffff;
  outline: none;
  padding: 0.5rem 0;
}

.landing-question-input::placeholder {
  color: #64748b;
  font-weight: 400;
}

.landing-input-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  font-size: 1.05rem;
  flex-shrink: 0;
}

.landing-mic-btn {
  background: rgba(15, 28, 52, 0.85);
  color: #818cf8;
}

.landing-mic-btn:hover {
  background: rgba(30, 48, 80, 0.95);
  color: #a5b4fc;
  transform: scale(1.05);
}

.landing-mic-btn.is-listening {
  background: #ef4444;
  color: #ffffff;
  animation: landing-mic-pulse 1.4s infinite;
}

/* Live mic is on (between turns too): steady red ring until tapped off. */
.landing-mic-btn.is-live {
  color: #ffffff;
  background: rgba(239, 68, 68, 0.75);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3);
}

@keyframes landing-mic-pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
  50% { transform: scale(1.08); box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.15); }
}

.landing-send-btn {
  background: #4f46e5;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.landing-send-btn:hover {
  background: #4338ca;
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.55);
}

.landing-send-btn:active {
  transform: scale(0.97);
}

/* Helper copy below input */
.landing-question-helper {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: #94a3b8;
  margin: 0.5rem 0 0 0;
}

/* Prompt Chips */
.landing-prompt-chips {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin: 0 auto 1.35rem auto;
}

.landing-prompt-label {
  font-size: 0.86rem;
  font-weight: 700;
  color: #94a3b8;
  margin-right: 0.25rem;
}

.landing-prompt-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.15rem;
  background: rgba(8, 20, 39, 0.82);
  border: 1.5px solid rgba(151, 184, 226, 0.22);
  border-radius: 9999px;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  color: #e2e8f0;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
  will-change: transform;
}

.landing-prompt-chip:hover {
  background: rgba(14, 27, 49, 0.95);
  border-color: #38bdf8;
  color: #38bdf8;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(14, 165, 233, 0.28);
}

.landing-prompt-chip:active {
  transform: scale(0.98);
  transition-duration: 0.08s;
}

/* --------------------------------------------------------------------------
   FEATURE BENEFIT CARDS (Pre-login clarity & trust)
   -------------------------------------------------------------------------- */
.landing-features-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(1.15rem, 2vw, 1.75rem) 1.5rem clamp(2.25rem, 4vw, 3.5rem);
}

.landing-section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 1.85rem auto;
}

.landing-features-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.85rem, 3.2vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: #ffffff;
  margin: 0.4rem 0 0 0;
}

.landing-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.landing-feature-card {
  background: rgba(8, 20, 39, 0.85);
  border: 1.5px solid rgba(151, 184, 226, 0.18);
  border-radius: 26px;
  padding: 1.75rem 1.5rem;
  box-shadow: 0 12px 32px -5px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease, border-color 0.2s ease;
  will-change: transform;
}

.landing-feature-card:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 189, 248, 0.38);
  box-shadow: 0 20px 44px -6px rgba(0, 0, 0, 0.55), 0 0 24px rgba(14, 165, 233, 0.12);
}

/* ==========================================================================
   SCROLL REVEAL (Tasteful Staggered Reveal for Value Band & Feature Cards)
   ========================================================================== */
.landing-scroll-reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.landing-scroll-reveal.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

.landing-features-grid .landing-feature-card:nth-child(1).landing-scroll-reveal {
  transition-delay: 0.06s;
}
.landing-features-grid .landing-feature-card:nth-child(2).landing-scroll-reveal {
  transition-delay: 0.16s;
}
.landing-features-grid .landing-feature-card:nth-child(3).landing-scroll-reveal {
  transition-delay: 0.26s;
}

.landing-feature-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.icon-cyan {
  background: rgba(14, 165, 233, 0.18);
  color: #38bdf8;
}

.icon-indigo {
  background: rgba(99, 102, 241, 0.2);
  color: #818cf8;
}

.icon-emerald {
  background: rgba(16, 185, 129, 0.18);
  color: #34d399;
}

.landing-feature-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 0.65rem 0;
  letter-spacing: -0.015em;
}

.landing-feature-card p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #94a3b8;
  margin: 0;
}

/* --------------------------------------------------------------------------
   DARK MARKETING FOOTER
   -------------------------------------------------------------------------- */
.landing-marketing-footer {
  border-top: 1px solid rgba(151, 184, 226, 0.12);
  background: #020712;
  padding: 1.5rem 1.5rem;
  font-size: 0.88rem;
  color: #64748b;
}

.landing-marketing-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.landing-marketing-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.landing-marketing-links a {
  color: #94a3b8;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.landing-marketing-links a:hover {
  color: #38bdf8;
}

/* Back to Landing Button inside Topbar (when app is visible) */
.topbar-home-btn {
  display: inline-flex !important;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.85rem !important;
  background: rgba(30, 41, 59, 0.7) !important;
  border: 1px solid rgba(148, 163, 184, 0.25) !important;
  border-radius: 9999px !important;
  color: #94a3b8 !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  cursor: pointer;
  transition: all 0.2s ease !important;
}

.topbar-home-btn:hover {
  background: rgba(51, 65, 85, 0.85) !important;
  color: #ffffff !important;
  border-color: rgba(14, 165, 233, 0.5) !important;
}

/* --------------------------------------------------------------------------
   RESPONSIVE DESIGN (Adaptive for ALL screens)
   -------------------------------------------------------------------------- */

/* Tablet (max-width: 1024px) */
@media (max-width: 1024px) {
  .landing-hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2rem;
  }
  .landing-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile Breakpoint (max-width: 768px) */
@media (max-width: 768px) {
  .landing-header-inner {
    padding: 0.75rem 1rem;
  }
  .landing-header-actions {
    gap: 0.5rem;
  }
  .landing-theme-toggle {
    width: 36px;
    height: 36px;
    font-size: 0.85rem;
  }
  .landing-brand-by {
    display: none;
  }
  .landing-hero {
    padding: 1.25rem 1rem 1.5rem;
  }
  .landing-hero-grid {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    max-width: 100%;
    gap: 1.5rem;
    text-align: center;
  }
  .landing-hero-content {
    align-items: center;
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .landing-hero-title {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    text-align: center;
    font-size: clamp(1.22rem, 5vw, 1.85rem);
    line-height: 1.25;
    word-break: normal;
    overflow-wrap: break-word;
  }
  .landing-hero-subtext {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    text-align: center;
    font-size: clamp(0.9rem, 3.5vw, 1.05rem);
    line-height: 1.5;
    white-space: normal;
    overflow-wrap: break-word;
  }
  .landing-playful-backdrop {
    inset: 0;
  }
  .landing-cta-group {
    align-items: center;
    width: 100%;
  }
  .landing-btn-primary {
    width: 100%;
    max-width: 320px;
  }
  .landing-mentor-card {
    max-width: 320px;
    padding: 1.25rem 1rem 1rem;
  }
  .landing-mentor-frame {
    min-height: auto;
    width: min(100%, 220px);
    height: 220px;
    border-radius: 18px;
  }
  .landing-mentor-img {
    max-height: none;
  }
  .landing-value-band {
    padding: 0.75rem 0.85rem;
  }
  .landing-value-content {
    gap: 0.85rem;
    font-size: 0.88rem;
  }
  .landing-value-sep {
    display: none;
  }
  .landing-question-section {
    padding: 1rem 1rem 0.85rem;
  }
  .landing-input-wrap {
    padding: 0.35rem 0.5rem 0.35rem 1rem;
    border-radius: 20px;
  }
  .landing-question-input {
    font-size: 0.98rem;
  }
  .landing-input-btn {
    width: 38px;
    height: 38px;
    font-size: 0.95rem;
  }
  .landing-features-section {
    padding: 1rem 1rem 2.25rem;
  }
  .landing-features-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .landing-hero {
    padding: 1.25rem 1rem 1rem;
  }
  .landing-hero-visual {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
  }
  .landing-mascot-companion {
    top: -24px;
    right: calc(50% - 150px);
    transform: scale(0.8);
    transform-origin: top right;
  }
  .landing-mascot-companion-speech {
    font-size: 0.74rem;
    padding: 0.22rem 0.7rem;
  }
  .depth-orb.orb-5,
  .depth-orb.orb-6,
  .depth-orb.orb-7,
  .depth-orb.orb-8,
  .depth-orb.orb-11,
  .depth-orb.orb-12 {
    display: none;
  }
  /* Mobile Science & Geometric Objects: Keep only 3 subtle, clean objects in safe corners */
  .sci-obj.obj-cube,
  .sci-obj.obj-molecule,
  .sci-obj.obj-polyhedron,
  .sci-obj.obj-torus,
  .sci-obj.obj-math {
    display: none !important;
  }
  .sci-obj.obj-atom {
    top: 5%;
    left: 2%;
    opacity: 0.55;
    transform: scale(0.65);
    transform-origin: top left;
  }
  .sci-obj.obj-planet {
    top: 5%;
    right: 3%;
    opacity: 0.55;
    transform: scale(0.65);
    transform-origin: top right;
  }
  .sci-obj.obj-dna {
    top: 80%;
    right: 2%;
    opacity: 0.45;
    transform: scale(0.6);
    transform-origin: bottom right;
  }
  .landing-mentor-card {
    transform: none !important;
  }
  .landing-card-glare {
    display: none;
  }
  .landing-marketing-footer-inner {
    flex-direction: column;
    text-align: center;
    justify-content: center;
    gap: 1rem;
  }
  .landing-marketing-links {
    justify-content: center;
  }
}

/* Small Phones (max-width: 420px) */
@media (max-width: 420px) {
  .landing-btn-signin span {
    display: none;
  }
  .landing-btn-signin {
    padding: 0.48rem 0.75rem;
  }
  .landing-mascot-companion {
    top: -24px;
    right: calc(50% - 138px);
    transform: scale(0.74);
    transform-origin: top right;
  }
  .landing-mascot-companion-speech {
    font-size: 0.7rem;
    padding: 0.2rem 0.6rem;
  }
  .landing-prompt-chip {
    padding: 0.4rem 0.8rem;
    font-size: 0.82rem;
  }
}

/* ========================================================
   Focal Continuity Message Flight Transition
   ======================================================== */
.flight-chat-bubble {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100000;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  max-width: min(560px, 88vw);
  padding: 14px 24px;
  border-radius: 22px 22px 6px 22px;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  background-image: linear-gradient(135deg, #38bdf8 0%, #0284c7 50%, #0369a1 100%);
  color: #ffffff;
  font-family: inherit;
  font-size: clamp(15px, 1.35vw, 17px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  box-shadow: 
    0 20px 52px rgba(2, 132, 199, 0.65),
    0 0 36px rgba(56, 189, 248, 0.75),
    0 0 0 2px rgba(255, 255, 255, 0.55),
    inset 0 1px 2px rgba(255, 255, 255, 0.75);
  pointer-events: none;
  user-select: none;
  will-change: transform, opacity;
  transform-origin: center center;
  backface-visibility: hidden;
  -webkit-font-smoothing: antialiased;
}

.flight-chat-bubble::after {
  content: '';
  position: absolute;
  inset: -12px;
  border-radius: 30px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.75) 0%, rgba(14, 165, 233, 0.4) 45%, rgba(2, 132, 199, 0) 75%);
  z-index: -1;
  filter: blur(12px);
  pointer-events: none;
  opacity: 0.95;
  animation: flight-bubble-glow-pulse 1s ease-in-out infinite alternate;
}

@keyframes flight-bubble-glow-pulse {
  0% { opacity: 0.75; transform: scale(0.96); }
  100% { opacity: 1; transform: scale(1.08); }
}

.flight-bubble-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #f0f9ff;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.9);
  flex-shrink: 0;
}

.flight-bubble-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #ffffff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}

.flight-trail-particle {
  position: fixed;
  top: 0;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #67e8f9;
  box-shadow: 0 0 16px #38bdf8, 0 0 28px #0284c7, 0 0 8px #ffffff;
  pointer-events: none;
  z-index: 99999;
  opacity: 0.95;
  will-change: transform, opacity;
}

/* Accessibility: prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .flight-chat-bubble,
  .flight-trail-particle {
    display: none !important;
    animation: none !important;
    transition: none !important;
  }
  .landing-status-dot,
  .landing-mic-btn.is-listening,
  .landing-aurora-glow,
  .depth-orb,
  .landing-vector-glyph,
  .sci-obj,
  .sci-obj-inner,
  .atom-orbit-group,
  .planet-moon-orbit,
  .gyro-ring,
  .landing-kicker,
  .landing-hero-title,
  .landing-hero-highlight,
  .landing-hero-subtext,
  .landing-grade-badge,
  .landing-cta-group,
  .landing-btn-primary,
  .landing-mentor-card,
  .landing-speech-bubble,
  .landing-card-glare,
  .landing-mascot-companion,
  .landing-mascot-companion-speech,
  .landing-mascot-companion-avatar,
  .mascot-arm-right-group,
  .mascot-face-expr,
  #mascot-antenna-bulb,
  .landing-prompt-chip,
  .landing-feature-card,
  .landing-scroll-reveal {
    animation: none !important;
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
    clip-path: none !important;
  }
}

/* ============================================================
   Self-contained landing trial — inline answers + sign-in gate
   ============================================================ */
.landing-trial-convo {
  max-width: 860px;
  margin: 4px auto 54px;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.landing-trial-turn {
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: landingTrialIn .45s cubic-bezier(.16, 1, .3, 1) both;
}
@keyframes landingTrialIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.landing-trial-q {
  align-self: flex-end;
  max-width: 85%;
  background: linear-gradient(135deg, #4f46e5, #3b82f6);
  color: #fff;
  padding: 12px 18px;
  border-radius: 20px 20px 6px 20px;
  font-weight: 600;
  line-height: 1.4;
  box-shadow: 0 6px 18px rgba(59, 130, 246, .22);
}
.landing-trial-a {
  align-self: stretch;
  width: 100%;
  box-sizing: border-box;
  background: #0b1526;
  border: 1.5px solid rgba(82, 224, 255, .18);
  color: #e6eefc;
  border-radius: 6px 22px 22px 22px;
  padding: 16px 18px;
  box-shadow: 0 14px 44px rgba(8, 20, 40, .22);
}
.landing-trial-a.is-thinking {
  display: flex; align-items: center; gap: 10px;
  color: #9fb3cf; font-weight: 600;
}
.landing-trial-spinner {
  width: 18px; height: 18px; border-radius: 50%; flex: 0 0 auto;
  border: 2.5px solid rgba(255, 255, 255, .14); border-top-color: #38bdf8;
  animation: landingTrialSpin .8s linear infinite; display: inline-block;
}
@keyframes landingTrialSpin { to { transform: rotate(360deg); } }
.landing-trial-who {
  display: flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 12px; letter-spacing: .08em;
  color: #52e0ff; text-transform: uppercase; margin-bottom: 12px;
}
.landing-trial-dot { width: 9px; height: 9px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 0 4px rgba(34, 197, 94, .18); }
.landing-trial-text { color: #e6eefc; line-height: 1.6; margin: 0; }
.landing-trial-a .appu-lesson-card {
  max-width: 100%;
  margin: 0;
  /* The trial is a narrow reading column: always stack blocks vertically so
     responses adapt to any length and stay inside the section. Overrides the
     >=769px 2-col grid (diagram | steps), which blows out here. */
  display: flex;
  flex-direction: column;
  gap: 14px;
  pointer-events: auto;
}

.landing-trial-gate { margin: 4px auto 0; width: 100%; animation: landingTrialIn .5s cubic-bezier(.16, 1, .3, 1) both; }
.landing-trial-gate-inner {
  text-align: center;
  background: linear-gradient(160deg, rgba(8, 20, 39, 0.95), rgba(12, 26, 52, 0.95));
  border: 1.5px solid rgba(56, 189, 248, 0.3);
  border-radius: 24px;
  padding: 32px 28px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55), 0 0 24px rgba(14, 165, 233, 0.12);
}
.landing-trial-gate-icon { font-size: 40px; margin-bottom: 10px; }
.landing-trial-gate-inner h3 { margin: 0 0 8px; font-size: 22px; color: #ffffff; }
.landing-trial-gate-inner p { margin: 0 0 20px; color: #94a3b8; }
.landing-trial-gate-inner .landing-btn-primary { margin: 0 auto; }
.landing-question-form.is-locked { opacity: .6; }

/* Answers render above the bar (inside the question container), chat-style. */
.landing-question-container > .landing-trial-convo {
  max-width: none;
  margin: 0 0 18px;
  padding: 0;
  text-align: left;
}
.landing-question-container.has-trial .landing-question-box {
  position: sticky;
  bottom: 12px;
  z-index: 5;
}
.landing-question-container.has-trial .landing-question-helper { display: none; }
/* First-question personalization (nickname, class, favourite subject). */
.landing-profile-step { margin-top: 14px; }
.landing-profile-q { margin: 0 0 10px; font-weight: 800; color: #52e0ff; }
.landing-profile-options { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.landing-profile-input {
  flex: 1 1 200px; min-width: 0;
  padding: 0.6rem 0.9rem; border-radius: 12px;
  border: 1.5px solid rgba(56, 189, 248, 0.35); background: rgba(8, 20, 39, 0.9);
  color: #e6eefc; font: inherit; font-size: 1rem;
}
.landing-profile-input:focus { outline: none; border-color: #38bdf8; box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22); }
.landing-profile-next {
  padding: 0.6rem 1.2rem; border-radius: 12px; border: 0; cursor: pointer;
  background: #4f46e5; color: #fff; font: inherit; font-weight: 800;
}
.landing-profile-skip {
  padding: 0.55rem 0.9rem; border-radius: 9999px; cursor: pointer;
  background: transparent; border: 1.5px dashed rgba(151, 184, 226, 0.35);
  color: #94a3b8; font: inherit; font-weight: 700; font-size: 0.85rem;
}
[data-theme="light"] .landing-profile-input { background: #ffffff; color: #0f1b2e; }
[data-theme="light"] .landing-profile-q { color: #0369a1; }

/* Landing answer is just the mind map, compact enough to fit one screen. */
.landing-trial-a .concept-tree-branches-grid {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}
.landing-trial-a .concept-branch-card { padding: 10px 12px; }
.landing-question-container .landing-trial-turn { scroll-margin-top: 84px; }
/* Solid while pinned so the answer doesn't show through the bar. */
.landing-question-container.has-trial .landing-input-wrap { background: #081427; }
[data-theme="light"] .landing-question-container.has-trial .landing-input-wrap { background: #ffffff; }

@media (max-width: 640px) {
  .landing-trial-convo { padding: 0 14px; margin-bottom: 36px; }
  .landing-question-container > .landing-trial-convo { padding: 0; margin-bottom: 14px; }
  .landing-trial-a { padding: 12px; }
  .landing-trial-a .concept-tree-branches-grid { grid-template-columns: 1fr 1fr !important; gap: 8px !important; }
  .landing-trial-a .concept-branch-card { padding: 8px 9px; border-radius: 12px; }
  .landing-trial-a .branch-title-text { font-size: 12.5px; }
  .landing-trial-a .branch-leaf-list { gap: 4px; }
  .landing-trial-a .branch-leaf-node { font-size: 11.5px; line-height: 1.3; padding: 4px 6px; gap: 5px; }
  .landing-trial-q { max-width: 92%; }
}

/* --------------------------------------------------------------------------
   SCHOOL CHALKBOARD — authentic chalk working in the hero margins
   Real formulas + labelled diagrams in a chalk hand, drawn on the graph-paper
   surface. Sits behind hero content (z-index 1 < grid's 5), decorative only.
   -------------------------------------------------------------------------- */
.landing-chalk {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}
.landing-chalk .chalk-mark {
  position: absolute;
  color: rgba(228, 240, 255, 0.17);
  opacity: 0;
  animation: chalk-fade-in 1.1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.landing-chalk .chalk-mark svg { display: block; overflow: visible; }
.landing-chalk .chalk-stroke {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.landing-chalk .chalk-stroke.thin { stroke-width: 1.1; }
.landing-chalk .chalk-text {
  font-family: 'Caveat', 'Segoe Print', cursive;
  font-weight: 700;
  fill: currentColor;
}
.landing-chalk .chalk-dim { color: rgba(125, 211, 252, 0.16); }

.chalk-a { top: 15%;    left: 2.2%;  transform: rotate(-7deg); animation-delay: 0.35s; }
.chalk-b { bottom: 9%;  left: 2.6%;  transform: rotate(-3deg); animation-delay: 0.55s; }
.chalk-c { bottom: 15%; right: 2.4%; transform: rotate(4deg);  animation-delay: 0.75s; }
.chalk-d { top: 21%;    right: 3.2%; transform: rotate(-5deg); animation-delay: 0.65s; }

@keyframes chalk-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Keep the schoolbook margins uncluttered on narrow screens */
@media (max-width: 960px) {
  .chalk-c, .chalk-d { display: none; }
}
@media (max-width: 680px) {
  .landing-chalk { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .landing-chalk .chalk-mark { animation: none; opacity: 1; }
}

/* ==========================================================================
   LIGHT THEME — additive overrides for the landing page.
   Applied ONLY when the theme toggle sets data-theme="light"; the default dark
   design above is left completely untouched. Accent hues (cyan/blue/indigo)
   are kept, surfaces flip to light, ink flips to dark navy.
   ========================================================================== */
body.view-landing[data-theme="light"] {
  background: #eef3fb !important;
  color: #0f1b2e !important;
}

[data-theme="light"] .marketing-landing {
  background-color: #eef3fb;
  background-image:
    radial-gradient(ellipse 130% 100% at 50% 38%, transparent 62%, rgba(148, 170, 200, 0.16) 100%),
    radial-gradient(ellipse at 88% 8%, rgba(251, 191, 36, 0.10) 0%, transparent 45%),
    radial-gradient(ellipse at 10% 18%, rgba(14, 165, 233, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 50% 6%, rgba(99, 102, 241, 0.08) 0%, transparent 52%),
    repeating-linear-gradient(to right,  rgba(37, 99, 160, 0.055) 0 1px, transparent 1px 140px),
    repeating-linear-gradient(to bottom, rgba(37, 99, 160, 0.055) 0 1px, transparent 1px 140px),
    repeating-linear-gradient(to right,  rgba(37, 99, 160, 0.028) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(to bottom, rgba(37, 99, 160, 0.028) 0 1px, transparent 1px 28px);
  color: #0f1b2e;
}

/* Chalk marks are drawn for a dark board; hide in light mode. */
[data-theme="light"] .landing-chalk { display: none !important; }

/* Header controls */
[data-theme="light"] .landing-lang-trigger,
[data-theme="light"] .landing-btn-signin,
[data-theme="light"] .landing-theme-toggle {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.12);
  color: #1e293b;
}
[data-theme="light"] .landing-theme-toggle { color: #0ea5e9; }
[data-theme="light"] .landing-lang-trigger:hover,
[data-theme="light"] .landing-btn-signin:hover,
[data-theme="light"] .landing-theme-toggle:hover {
  background: #f0f9ff;
  border-color: #38bdf8;
  color: #0284c7;
}
[data-theme="light"] .landing-lang-trigger .fa-chevron-down { color: #64748b; }
[data-theme="light"] .landing-lang-menu {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.12);
}

/* Hero */
[data-theme="light"] .landing-kicker {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.12) 0%, rgba(16, 185, 129, 0.10) 100%);
  border-color: rgba(99, 102, 241, 0.3);
  color: #4f46e5;
}
[data-theme="light"] .landing-hero-title,
[data-theme="light"] .landing-features-title,
[data-theme="light"] .landing-question-title { color: #0f1b2e; }
[data-theme="light"] .landing-hero-subtext,
[data-theme="light"] .landing-cta-sub,
[data-theme="light"] .landing-question-subtitle,
[data-theme="light"] .landing-feature-card p,
[data-theme="light"] .landing-prompt-label { color: #475569; }

/* Mentor card + speech bubble + nameplate */
[data-theme="light"] .landing-mentor-card {
  background: linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 24px 56px -16px rgba(15, 42, 80, 0.2), 0 6px 20px -8px rgba(15, 42, 80, 0.12);
}
[data-theme="light"] .landing-speech-bubble {
  background: #ffffff;
  color: #0f1b2e;
  box-shadow: 0 8px 24px -8px rgba(15, 42, 80, 0.2), 0 0 16px rgba(56, 189, 248, 0.1);
}
[data-theme="light"] .landing-bubble-tail { background: #ffffff; }
[data-theme="light"] .landing-mentor-nameplate {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.1);
  box-shadow: 0 4px 16px -6px rgba(15, 42, 80, 0.16);
}
[data-theme="light"] .landing-nameplate-text { color: #475569; }
[data-theme="light"] .landing-nameplate-text strong { color: #0f1b2e; }

/* Value band */
[data-theme="light"] .landing-value-band {
  background: rgba(255, 255, 255, 0.7);
  border-top-color: rgba(15, 23, 42, 0.08);
  border-bottom-color: rgba(15, 23, 42, 0.08);
}
[data-theme="light"] .landing-value-content { color: #334155; }
[data-theme="light"] .landing-value-sep { color: rgba(15, 23, 42, 0.2); }

/* Interactive question section */
[data-theme="light"] .landing-input-wrap {
  background: #ffffff;
  border-color: rgba(56, 189, 248, 0.35);
  box-shadow: 0 16px 40px -12px rgba(15, 42, 80, 0.18), 0 0 20px -6px rgba(14, 165, 233, 0.08);
}
[data-theme="light"] .landing-question-input { color: #0f1b2e; }
[data-theme="light"] .landing-prompt-chip {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.12);
  color: #1e293b;
  box-shadow: 0 4px 12px rgba(15, 42, 80, 0.08);
}
[data-theme="light"] .landing-prompt-chip:hover {
  background: #f0f9ff;
  border-color: #38bdf8;
  color: #0284c7;
}

/* Inline trial answer (rich lesson card wrapper) */
[data-theme="light"] .landing-trial-a {
  background: #ffffff;
  border-color: rgba(56, 189, 248, 0.3);
  color: #0f1b2e;
  box-shadow: 0 14px 44px rgba(15, 42, 80, 0.12);
}
[data-theme="light"] .landing-trial-text { color: #0f1b2e; }

/* Feature cards */
[data-theme="light"] .landing-feature-card {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.08);
  box-shadow: 0 12px 32px -12px rgba(15, 42, 80, 0.15);
}
[data-theme="light"] .landing-feature-card h3 { color: #0f1b2e; }

/* Marketing footer */
[data-theme="light"] .landing-marketing-footer {
  background: #e6edf8;
  border-top-color: rgba(15, 23, 42, 0.1);
}

/* Reload with a saved session: show neither view until auth settles (see index.html head). */
html.appu-restoring body #marketing-landing,
html.appu-restoring body #app-shell {
  display: none !important;
}
html.appu-restoring body::after {
  content: '';
  position: fixed;
  top: 50%;
  left: 50%;
  width: 36px;
  height: 36px;
  margin: -18px 0 0 -18px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.18);
  border-top-color: #38bdf8;
  animation: appu-restore-spin 0.8s linear infinite;
}
@keyframes appu-restore-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  html.appu-restoring body::after { animation: none; }
}

/* ==========================================================================
   FRONT DOOR (2026-10-26 redesign, Claude-style): plain navy page, Appu's
   photo, one greeting, one ask box. The guest trial chat grows above the box.
   ========================================================================== */
body.view-landing { background: #0b1322 !important; }
.marketing-landing { background: #0b1322; background-image: none; }
.landing-header { background: rgba(11, 19, 34, 0.92); border-bottom: 1px solid rgba(148, 163, 184, 0.12); box-shadow: none; }

.landing-front {
  min-height: calc(100svh - 150px);
  display: flex;
  align-items: center;
  padding: clamp(24px, 6vh, 72px) 16px clamp(24px, 5vh, 56px);
}
.landing-front-inner.landing-question-container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.landing-front-intro { margin-bottom: 24px; }
.landing-front-avatar { margin: 0 0 18px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.landing-front-avatar img {
  width: clamp(104px, 14vw, 136px);
  height: clamp(104px, 14vw, 136px);
  object-fit: cover;
  object-position: center 20%;
  border-radius: 28px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: #13213a;
}
.landing-front .landing-mentor-nameplate {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 0; background: none; border: 0; box-shadow: none;
  font-size: 14px; color: #94a3b8;
}
.landing-front .landing-mentor-nameplate strong { color: #e2e8f0; font-weight: 800; letter-spacing: 0.04em; }
.landing-front .landing-status-dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; }

.landing-front .landing-hero-title {
  margin: 0 0 10px;
  font-family: 'Space Grotesk', Manrope, sans-serif;
  font-size: clamp(28px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #f1f5f9;
}
.landing-front .landing-hero-highlight { color: #38bdf8; background: none; -webkit-text-fill-color: currentColor; }
.landing-front .landing-hero-subtext { margin: 0 auto; max-width: 34em; font-size: 17px; line-height: 1.5; color: #94a3b8; }

/* Composer: same feel as the app's ask box (border only, no glow). */
.landing-front .landing-question-box { margin: 0 0 14px; }
.landing-front .landing-input-wrap {
  gap: 8px;
  padding: 8px 8px 8px 20px;
  border-radius: 28px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  background: #13213a;
  box-shadow: none;
}
.landing-front .landing-input-wrap:focus-within { border-color: #38bdf8; box-shadow: none; }
.landing-front .landing-question-input { font-size: 16px; color: #f1f5f9; padding: 10px 0; }
.landing-front .landing-question-input::placeholder { color: #7c8aa0; }
.landing-front .landing-mic-btn { background: transparent; color: #cbd5e1; border: 1px solid rgba(148, 163, 184, 0.28); }
.landing-front .landing-mic-btn:hover { background: rgba(148, 163, 184, 0.12); color: #f1f5f9; transform: none; }
.landing-front .landing-send-btn { background: #0ea5e9; color: #04131f; box-shadow: none; }
.landing-front .landing-send-btn:hover { background: #38bdf8; transform: none; box-shadow: none; }
.landing-front .landing-question-helper { font-size: 14px; color: #7c8aa0; }

.landing-front .landing-prompt-chips { margin: 0 auto 14px; gap: 8px; }
.landing-front .landing-prompt-chip {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: transparent;
  box-shadow: none;
  font-size: 14px;
  font-weight: 600;
  color: #cbd5e1;
}
.landing-front .landing-prompt-chip:hover { background: rgba(148, 163, 184, 0.1); border-color: #38bdf8; color: #f1f5f9; transform: none; box-shadow: none; }
.landing-front .landing-cta-sub { display: block; margin: 0; font-size: 14px; color: #7c8aa0; }

/* Chatting: greeting and starters step aside, like Claude once a chat starts. */
.landing-front-inner.has-trial .landing-front-intro,
.landing-front-inner.has-trial .landing-prompt-chips { display: none; }
.landing-front:has(.has-trial) { align-items: flex-start; }
.landing-front-inner.has-trial .landing-input-wrap { background: #13213a; }

/* What Appu does: three short facts */
.landing-facts {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 16px 56px;
  border-top: 1px solid rgba(148, 163, 184, 0.12);
}
.landing-facts-title {
  margin: 0 0 24px;
  text-align: center;
  font: 700 22px/1.2 'Space Grotesk', Manrope, sans-serif;
  color: #f1f5f9;
}
.landing-facts-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.landing-facts-list li { text-align: left; }
.landing-facts-list i { font-size: 20px; color: #38bdf8; margin-bottom: 10px; }
.landing-facts-list h3 { margin: 0 0 6px; font-size: 17px; font-weight: 700; color: #f1f5f9; }
.landing-facts-list p { margin: 0; font-size: 15px; line-height: 1.55; color: #94a3b8; }
.landing-marketing-footer { background: transparent; border-top: 1px solid rgba(148, 163, 184, 0.12); }

@media (max-width: 720px) {
  .landing-facts-list { grid-template-columns: 1fr; gap: 20px; }
  .landing-front { min-height: auto; }
}

/* Light theme */
[data-theme="light"] body.view-landing,
body.view-landing[data-theme="light"] { background: #f8fafc !important; }
[data-theme="light"] .marketing-landing { background: #f8fafc; background-image: none; }
[data-theme="light"] .landing-header { background: rgba(248, 250, 252, 0.92); border-bottom-color: rgba(15, 23, 42, 0.08); }
[data-theme="light"] .landing-front .landing-hero-title,
[data-theme="light"] .landing-facts-title,
[data-theme="light"] .landing-facts-list h3,
[data-theme="light"] .landing-front .landing-mentor-nameplate strong { color: #0f172a; }
[data-theme="light"] .landing-front .landing-hero-highlight { color: #0284c7; }
[data-theme="light"] .landing-front .landing-hero-subtext,
[data-theme="light"] .landing-facts-list p,
[data-theme="light"] .landing-front .landing-mentor-nameplate { color: #475569; }
[data-theme="light"] .landing-front .landing-input-wrap,
[data-theme="light"] .landing-front-inner.has-trial .landing-input-wrap { background: #ffffff; border-color: #cbd5e1; box-shadow: none; }
[data-theme="light"] .landing-front .landing-question-input { color: #0f172a; }
[data-theme="light"] .landing-front .landing-mic-btn { color: #334155; border-color: #cbd5e1; }
[data-theme="light"] .landing-front .landing-prompt-chip { background: #ffffff; border-color: #cbd5e1; color: #1e293b; box-shadow: none; }
[data-theme="light"] .landing-front .landing-cta-sub,
[data-theme="light"] .landing-front .landing-question-helper { color: #64748b; }
[data-theme="light"] .landing-facts,
[data-theme="light"] .landing-marketing-footer { border-top-color: rgba(15, 23, 42, 0.08); background: transparent; }
@media (max-width: 600px) {
  .landing-front .landing-prompt-chip:nth-child(n+3) { display: none; }
}

/* Trial chat in the front door: same look as the app conversation. */
.landing-front .landing-trial-q { background: #12325a; color: #f1f5f9; box-shadow: none; border-radius: 18px; font-weight: 500; }
.landing-front .landing-trial-a { background: transparent; border: 0; box-shadow: none; padding: 4px 0; border-radius: 0; }
.landing-front .landing-trial-who { color: #94a3b8; }
.landing-front .landing-profile-q { color: #f1f5f9; }
.landing-front .landing-profile-input { background: #13213a; border: 1px solid rgba(148, 163, 184, 0.28); min-height: 44px; }
.landing-front .landing-profile-next { background: #0ea5e9; color: #04131f; min-height: 44px; }
.landing-front .landing-profile-skip { min-height: 44px; }
.landing-front .landing-trial-gate-inner { background: #13213a; border: 1px solid rgba(148, 163, 184, 0.2); box-shadow: none; }
[data-theme="light"] .landing-front .landing-trial-q { background: #e0f2fe; color: #0f172a; }
[data-theme="light"] .landing-front .landing-trial-a { background: transparent; box-shadow: none; }
[data-theme="light"] .landing-front .landing-profile-q { color: #0f172a; }
[data-theme="light"] .landing-front .landing-profile-input { background: #ffffff; border-color: #cbd5e1; }
[data-theme="light"] .landing-front .landing-trial-gate-inner { background: #ffffff; border-color: #cbd5e1; }
[data-theme="light"] .landing-front .landing-trial-gate-inner h3 { color: #0f172a; }
/* The app's off-canvas sidebar casts a shadow onto the landing page edge. */
body.view-landing #nav-drawer { visibility: hidden; box-shadow: none; }
[data-theme="light"] .landing-brand-title { color: #0f172a; -webkit-text-fill-color: currentColor; background: none; }

/* IGr Academy band: a short "who made Appu" note with a link out. */
.landing-igr { max-width: 960px; margin: 0 auto; padding: 0 16px 56px; }
.landing-igr-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 28px;
  padding: 26px 28px; border-radius: 18px;
  border: 1px solid rgba(56, 189, 248, 0.22);
  background: linear-gradient(135deg, rgba(14, 43, 74, 0.55), rgba(10, 22, 40, 0.55));
}
.landing-igr-kicker { margin: 0 0 6px; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: #38bdf8; }
.landing-igr-title { margin: 0 0 8px; font: 700 22px/1.2 'Space Grotesk', Manrope, sans-serif; color: #f1f5f9; }
.landing-igr-desc { margin: 0; max-width: 560px; font-size: 15px; line-height: 1.55; color: #94a3b8; }
.landing-igr-cta {
  flex: 0 0 auto; display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; border-radius: 999px; font-weight: 700; font-size: 15px; text-decoration: none;
  color: #04111f; background: #38bdf8; transition: background .2s ease, transform .2s ease;
}
.landing-igr-cta:hover { background: #7dd3fc; transform: translateY(-1px); }
.landing-igr-cta:focus-visible { outline: 2px solid #f1f5f9; outline-offset: 3px; }
.landing-igr-cta i { font-size: 13px; }
@media (max-width: 720px) {
  .landing-igr-inner { flex-direction: column; align-items: flex-start; gap: 18px; padding: 22px 20px; }
}
[data-theme="light"] .landing-igr-inner { background: #ffffff; border-color: #cbd5e1; }
[data-theme="light"] .landing-igr-title { color: #0f172a; }
[data-theme="light"] .landing-igr-desc { color: #475569; }
[data-theme="light"] .landing-igr-kicker { color: #0284c7; }
[data-theme="light"] .landing-igr-cta { background: #0284c7; color: #ffffff; }
[data-theme="light"] .landing-igr-cta:hover { background: #0369a1; }