/* Small custom layer on top of Tailwind. 3D/4D spatial enhancements layered on top. */

[x-cloak] { display: none !important; }

html { scroll-padding-top: 5rem; }

body {
  background:
    radial-gradient(circle at top left, rgba(183, 90, 67, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(210, 154, 49, 0.08), transparent 24%),
    linear-gradient(180deg, #fbf8ef 0%, #f4eedc 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(
      to bottom,
      rgba(112, 144, 189, 0.14) 0,
      rgba(112, 144, 189, 0.14) 1px,
      transparent 1px,
      transparent 34px
    );
  opacity: 0.9;
  z-index: -1;
}

/* body::after replaced by the JS-driven #scroll-timeline */

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Smooth fade for HTMX swapped content */
.htmx-swapping { opacity: 0; transition: opacity .15s ease; }
.htmx-settling { opacity: 1; }

/* Visible keyboard focus everywhere */
:focus-visible {
  outline: 2px solid #B75A43;
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: rgba(183, 90, 67, 0.18);
}

.section-shell {
  position: relative;
}

.section-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 2rem;
  border: 1px solid rgba(221, 214, 202, 0.8);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(221, 214, 202, 0.9);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.8);
  padding: 0.4rem 0.8rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #5E6777;
}

.eyebrow::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: #B75A43;
  box-shadow: 0 0 0 0.28rem rgba(183, 90, 67, 0.12);
}

@media (max-width: 640px) {
  body::after {
    left: 1rem;
  }
}

.chart-track {
  display: flex;
  align-items: end;
  height: 13rem;
  border-radius: 1.25rem;
  background:
    linear-gradient(to top, rgba(10, 37, 64, 0.04), rgba(10, 37, 64, 0.04)) 0 100% / 100% 1px no-repeat,
    repeating-linear-gradient(
      to top,
      rgba(10, 37, 64, 0.04) 0,
      rgba(10, 37, 64, 0.04) 1px,
      transparent 1px,
      transparent 25%
    );
  padding: 0.75rem;
}

.chart-bar {
  width: 100%;
  border-radius: 1rem 1rem 0.5rem 0.5rem;
  min-height: 2.25rem;
  box-shadow: 0 12px 24px rgba(10, 37, 64, 0.16);
}

.chart-bar-teal {
  background: linear-gradient(180deg, #67e8f9 0%, #14b8a6 100%);
}

.chart-bar-indigo {
  background: linear-gradient(180deg, #a5b4fc 0%, #4f46e5 100%);
}

.chart-bar-amber {
  background: linear-gradient(180deg, #fde68a 0%, #f59e0b 100%);
}

.chart-bar-rose {
  background: linear-gradient(180deg, #fda4af 0%, #f43f5e 100%);
}

/* On phones, the 4 bar-cards stack in a 2x2 grid (see sample_detail.html)
   instead of side by side, so each track is much wider relative to its
   height than on desktop. Without this, a full-width bar reads as a flat
   colour block rather than a bar. Shorten the track and narrow/centre the
   bar so it still looks like a bar at that aspect ratio. */
@media (max-width: 639px) {
  .chart-track {
    height: 7.5rem;
    justify-content: center;
  }

  .chart-bar {
    width: 55%;
  }
}

.flip-card {
  perspective: 1200px;
}

.flip-card-button {
  width: 100%;
  display: block;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 0;
}

.flip-card-inner {
  position: relative;
  min-height: 21rem;
  transform-style: preserve-3d;
  transition: transform 0.65s ease;
}

.flip-card-inner.is-flipped {
  transform: rotateY(180deg);
}

.flip-face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: 1.5rem;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  padding: 1.5rem;
  box-shadow: 0 1px 2px rgba(10, 37, 64, 0.04), 0 8px 24px rgba(10, 37, 64, 0.06);
}

.flip-front {
  border: 1px solid #E5EAF1;
  background: linear-gradient(180deg, #ffffff 0%, #f5f7fb 100%);
}

.flip-back {
  border: 1px solid rgba(20, 184, 166, 0.2);
  background: linear-gradient(135deg, #0f766e 0%, #14b8a6 56%, #67e8f9 100%);
  transform: rotateY(180deg);
}

/* ═══════════════════════════════════════════════════════
   3D / 4D SPATIAL LAYER
   ═══════════════════════════════════════════════════════ */

/* ── Neural Network Canvas ─────────────────────────── */
#neural-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  pointer-events: none;
  z-index: 0;
}

/* Ensure content sits above canvas */
#neural-canvas ~ * {
  position: relative;
  z-index: 1;
}

/* ── Enhanced Navigation Glassmorphism ─────────────── */
header {
  background: rgba(246, 242, 234, 0.78) !important;
  backdrop-filter: blur(28px) saturate(200%) !important;
  -webkit-backdrop-filter: blur(28px) saturate(200%) !important;
  border-bottom: 1px solid rgba(216, 207, 184, 0.5) !important;
  transition: box-shadow 0.3s ease, background 0.3s ease !important;
}

header.nav--elevated {
  background: rgba(246, 242, 234, 0.92) !important;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.6) inset,
    0 4px 24px rgba(36, 59, 48, 0.08) !important;
}

/* ── 3D Tilt Cards ────────────────────────────────── */
[data-tilt] {
  transform: perspective(1100px) rotateX(0deg) rotateY(0deg);
  will-change: transform;
  transform-style: preserve-3d;
  transition: box-shadow 0.25s ease;
}

[data-tilt]:hover {
  box-shadow:
    0 0 0 1px rgba(183,90,67,0.12),
    0 24px 60px rgba(36, 59, 48, 0.18);
}

/* JS-injected shine layer */
.tilt-shine {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 10;
}

/* ── 3D Fold-In Reveal ────────────────────────────── */
.reveal-3d {
  opacity: 0;
  transform: perspective(900px) rotateX(-14deg) translateY(28px);
  transition:
    opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0s),
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0s);
}

.reveal-3d.revealed {
  opacity: 1;
  transform: perspective(900px) rotateX(0deg) translateY(0px);
}

/* ── 4D Scroll Timeline ───────────────────────────── */
#scroll-timeline {
  position: fixed;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  pointer-events: none;
}

.tl-track {
  width: 2px;
  height: 38vh;
  background: rgba(183, 90, 67, 0.1);
  border-radius: 999px;
  position: relative;
  overflow: hidden;
}

.tl-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: linear-gradient(
    180deg,
    rgba(183, 90, 67, 0.7) 0%,
    rgba(210, 154, 49, 0.5) 100%
  );
  border-radius: 999px;
  box-shadow: 0 0 6px rgba(183, 90, 67, 0.3);
  transition: height 0.12s linear;
}

.tl-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(183, 90, 67, 0.22);
  border: 1.5px solid rgba(183, 90, 67, 0.35);
  flex-shrink: 0;
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.tl-dot.tl-dot-active {
  background: #B75A43;
  transform: scale(1.5);
  box-shadow: 0 0 8px rgba(183, 90, 67, 0.55);
}

@media (max-width: 1024px) {
  #scroll-timeline { display: none; }
}

/* ── Floating Depth Orbs ─────────────────────────── */
.depth-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  animation: orb-float 14s ease-in-out infinite;
  will-change: transform;
}

@keyframes orb-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(18px, -14px) scale(1.06); }
  66%       { transform: translate(-12px,  9px) scale(0.96); }
}

/* ── Animated Chart Bars ─────────────────────────── */
.chart-track .chart-bar {
  transform-origin: bottom center;
  transition: transform 0.9s cubic-bezier(0.34, 1.56, 0.64, 1) var(--bar-delay, 0s);
}

.chart-track:not(.chart-animated) .chart-bar {
  transform: scaleY(0);
}

/* ── Section Hero Canvas Host ────────────────────── */
.hero-canvas-host {
  position: relative;
  overflow: hidden;
}

/* ── Glowing CTA Pulse ───────────────────────────── */
@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(183,90,67,0.35); }
  70%  { box-shadow: 0 0 0 10px rgba(183,90,67,0); }
  100% { box-shadow: 0 0 0 0 rgba(183,90,67,0); }
}

.cta-pulse {
  animation: pulse-ring 2.4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ── 3D Flip Card Enhancement ────────────────────── */
.flip-card-inner {
  transition: transform 0.7s cubic-bezier(0.34, 1.4, 0.64, 1);
}

.flip-face {
  box-shadow:
    0 1px 2px rgba(10,37,64,0.04),
    0 12px 32px rgba(10,37,64,0.08),
    0 0 0 1px rgba(255,255,255,0.5) inset;
}

/* ── Depth Layer on Stat Cards ───────────────────── */
.stat-card-3d {
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(244,238,220,0.6) 100%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@media (max-width: 640px) {
  body::after { left: 0.75rem; }
}

/* ── Drag-and-drop: matching + sequencing knowledge checks ──── */
[data-matching-item], [data-sequencing-item] {
  transition: box-shadow 0.15s ease, opacity 0.2s ease;
}

[data-matching-item].is-dragging,
[data-sequencing-item].is-dragging {
  box-shadow: 0 16px 32px rgba(36, 59, 48, 0.18);
  opacity: 0.92;
  z-index: 20;
  position: relative;
}

[data-drop-target].drop-target-active {
  border-color: #B75A43;
  background: rgba(183, 90, 67, 0.06);
}

[data-sequencing-item].sequencing-target {
  border-color: #B75A43;
  box-shadow: 0 0 0 2px rgba(183, 90, 67, 0.18);
}

.matching-item-placed {
  opacity: 0.45;
}

/* Blog post "manuscript" theme block: a warm parchment card with the quill
   and scroll artwork tucked into the corner as a low opacity watermark, not a
   stretched photo, so it stays soft and out of the way of the article text. */
.blog-parchment {
  position: relative;
  background: linear-gradient(165deg, #FFFDF7 0%, #FBF3DF 55%, #F1E4C5 100%);
}

.blog-parchment::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("/static/brand/blog-quill.jpg");
  background-size: 270px auto;
  background-repeat: no-repeat;
  background-position: top right -2rem;
  opacity: 0.14;
  mix-blend-mode: multiply;
  pointer-events: none;
}

.blog-parchment-content {
  position: relative;
}