/* STRATA FX — layered motion on top of Core 0.5a styles.
   Everything here is additive and respects prefers-reduced-motion. */

/* ---- Ambient hero canvas ---- */
.fx-stream {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: var(--fx-stream-opacity, 0.9);
  transition: opacity 260ms linear;
  mask-image: linear-gradient(
    to bottom,
    transparent 0%,
    black 6%,
    black 52%,
    transparent 92%
  );
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent 0%,
    black 6%,
    black 52%,
    transparent 92%
  );
}

/* ---- Reveal-on-scroll base state ---- */
.fx-reveal {
  opacity: 0;
  transform: translateY(14px);
  filter: blur(6px);
  transition:
    opacity 600ms cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1),
    filter 600ms cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: opacity, transform, filter;
}
.fx-reveal.is-in {
  opacity: 1;
  transform: none;
  filter: blur(0);
}
/* Stagger for grouped items */
.fx-reveal[data-fx-delay="1"] { transition-delay: 60ms; }
.fx-reveal[data-fx-delay="2"] { transition-delay: 120ms; }
.fx-reveal[data-fx-delay="3"] { transition-delay: 180ms; }
.fx-reveal[data-fx-delay="4"] { transition-delay: 240ms; }
.fx-reveal[data-fx-delay="5"] { transition-delay: 300ms; }
.fx-reveal[data-fx-delay="6"] { transition-delay: 360ms; }

/* ---- Decode hero title ---- */
.fx-decode { position: relative; }
.fx-decode .fx-char {
  display: inline-block;
  transition: color 200ms ease;
}
.fx-decode.fx-decoding .fx-char.fx-scramble {
  color: var(--accent, #10f090);
  text-shadow: 0 0 10px var(--accent-glow, rgba(16,240,144,0.5));
}

/* ---- Typed caret for meta values ---- */
.fx-typed { position: relative; }
.fx-typed::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 1em;
  margin-left: 2px;
  vertical-align: -2px;
  background: var(--accent, #10f090);
  box-shadow: 0 0 6px var(--accent-glow, rgba(16,240,144,0.5));
  animation: fxCaret 1s steps(1) infinite;
}
.fx-typed.fx-typed-done::after { display: none; }
@keyframes fxCaret { 50% { opacity: 0; } }

/* ---- Nav underline sweep ---- */
.nav-links a {
  position: relative;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 1px;
  background: var(--accent, #10f090);
  box-shadow: 0 0 6px var(--accent-glow, rgba(16,240,144,0.5));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 320ms cubic-bezier(0.2, 0.7, 0.2, 1);
}
.nav-links a:hover::after { transform: scaleX(1); }
.nav-links a.active::after { display: none; } /* keep solid border for active */

/* ---- Card top-edge accent sweep on hover ---- */
.feature-card,
.kpi-card,
.unit-card,
.path-card,
.tier {
  position: relative;
  overflow: hidden;
  transition: transform 280ms cubic-bezier(0.2, 0.7, 0.2, 1),
              border-color 280ms ease,
              background-color 280ms ease;
}
.feature-card::before,
.kpi-card::before,
.unit-card::before,
.path-card::before,
.tier::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent, #10f090) 50%,
    transparent
  );
  opacity: 0;
  transition: left 600ms cubic-bezier(0.2, 0.7, 0.2, 1),
              opacity 200ms ease;
  pointer-events: none;
  z-index: 2;
}
.feature-card:hover::before,
.kpi-card:hover::before,
.unit-card:hover::before,
.path-card:hover::before,
.tier:hover::before {
  left: 100%;
  opacity: 1;
}
.feature-card:hover,
.kpi-card:hover,
.unit-card:hover,
.path-card:hover,
.tier:hover {
  transform: translateY(-2px);
}

/* ---- Status dot slight radial breathing (augments existing pulse) ---- */
.status-tag .dot {
  animation: fxPulse 2.4s ease-in-out infinite;
}
@keyframes fxPulse {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 8px var(--accent-glow, rgba(16,240,144,0.5)),
                0 0 0 0 rgba(16,240,144,0.35);
  }
  50% {
    opacity: 0.55;
    box-shadow: 0 0 10px var(--accent-glow, rgba(16,240,144,0.5)),
                0 0 0 6px rgba(16,240,144,0);
  }
}

/* ---- Reduced-motion override ---- */
@media (prefers-reduced-motion: reduce) {
  .fx-reveal {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
  .fx-stream { display: none; }
  .fx-decode .fx-char { color: inherit !important; text-shadow: none !important; }
  .fx-typed::after { display: none; }
  .feature-card::before, .kpi-card::before, .unit-card::before,
  .path-card::before, .tier::before { display: none; }
  .feature-card:hover, .kpi-card:hover, .unit-card:hover,
  .path-card:hover, .tier:hover { transform: none; }
  .status-tag .dot { animation: none; }
}