/*!
 * ScrollSequence — universal styles. Everything is scoped under `.scroll-sequence`
 * so it can be dropped into any existing site without collisions.
 */

.scroll-sequence {
  --ss-bg: #0d0906;
  --ss-accent: #ffffff;
  --ss-accent-light: #ffffff;
  --ss-sand: #ffffff;
  --ss-sand-dim: #ffffff;
  --ss-ink: #ffffff;
  position: relative;
  display: block;
  width: 100%;
  background: var(--ss-bg);
  color: var(--ss-ink);
  /* font-family: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif; */
  -webkit-font-smoothing: antialiased;
}

.scroll-sequence *,
.scroll-sequence *::before,
.scroll-sequence *::after {
  box-sizing: border-box;
    color: #fff;
}

/* Pin mechanism: spacer gives scroll length, stage sticks to the top. */
.scroll-sequence .ss-spacer {
  position: relative;
  width: 100%;
}
.scroll-sequence .ss-stage {
  position: sticky;
  top: 0;
  width: 100%;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  background: var(--ss-bg);
}

.scroll-sequence .ss-stage:before {
  content: "";
  position: absolute;
  left:0;
  top:0;
  width: 100%;
  height: 100vh;
  height: 100svh;
  background: linear-gradient(0deg, #00000047, transparent, #00000047);
  z-index: 1;
}

.scroll-sequence .ss-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* Colour grade + vignette */
.scroll-sequence .ss-grade {
  position: absolute;
  inset: 0;
  pointer-events: none;
  mix-blend-mode: soft-light;
  background: linear-gradient(
    120deg,
    rgba(214, 122, 60, 0.18),
    rgba(0, 0, 0, 0) 40%,
    rgba(13, 9, 6, 0.25)
  );
}
.scroll-sequence .ss-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    120% 100% at 50% 45%,
    rgba(0, 0, 0, 0) 55%,
    rgba(13, 9, 6, 0.55) 100%
  );
}

/* Lighting */
.scroll-sequence .ss-lighting {
  position: absolute;
  inset: 0;
  pointer-events: none;
  --ss-sun: 0.85;
  --ss-leaves: 0.9;
  --ss-heat: 0;
  --ss-bloom: 0;
  --ss-warmth: 0;
  --ss-leaf-x: 0%;
  --ss-leaf-y: 0%;
  --ss-heat-y: 0px;
}
.scroll-sequence .ss-l-sun {
  position: absolute;
  inset: 0;
  opacity: var(--ss-sun);
  mix-blend-mode: screen;
  background: radial-gradient(
    80% 120% at -5% 20%,
    rgba(255, 214, 150, 0.5),
    rgba(255, 190, 120, 0.14) 35%,
    rgba(0, 0, 0, 0) 62%
  );
}
.scroll-sequence .ss-l-leaves {
  position: absolute;
  inset: -10%;
  opacity: calc(var(--ss-leaves) * 0.5);
  transform: translate(var(--ss-leaf-x), var(--ss-leaf-y));
  mix-blend-mode: multiply;
  filter: blur(6px);
  background:
    radial-gradient(24% 30% at 20% 30%, rgba(20, 12, 6, 0.9), transparent 60%),
    radial-gradient(18% 22% at 38% 55%, rgba(20, 12, 6, 0.8), transparent 60%),
    radial-gradient(30% 26% at 15% 70%, rgba(20, 12, 6, 0.7), transparent 62%),
    radial-gradient(16% 20% at 30% 12%, rgba(20, 12, 6, 0.6), transparent 60%);
}
.scroll-sequence .ss-l-warm {
  position: absolute;
  inset: 0;
  opacity: calc(var(--ss-warmth) * 0.5);
  mix-blend-mode: overlay;
  background: radial-gradient(
    100% 100% at 50% 60%,
    rgba(181, 85, 31, 0.35),
    rgba(120, 45, 15, 0.12) 55%,
    rgba(0, 0, 0, 0) 80%
  );
}
.scroll-sequence .ss-l-heat {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 70%;
  opacity: calc(var(--ss-heat) * 0.9);
  transform: translateY(var(--ss-heat-y));
  filter: url(#ssHeatHaze);
  mix-blend-mode: screen;
  background: linear-gradient(
    to top,
    rgba(255, 150, 70, 0.16),
    rgba(255, 150, 70, 0) 70%
  );
}
.scroll-sequence .ss-l-bloom {
  position: absolute;
  inset: 0;
  opacity: var(--ss-bloom);
  mix-blend-mode: screen;
  color: #000;
  background: radial-gradient(
    60% 60% at 50% 45%,
    rgba(255, 235, 205, 0.28),
    rgba(0, 0, 0, 0) 70%
  );
}
.scroll-sequence .ss-l-defs {
  position: absolute;
}

/* Particles */
.scroll-sequence .ss-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  mix-blend-mode: screen;
}

/* Captions */
.scroll-sequence .ss-captions {
  position: absolute;
  left: clamp(1.5rem, 6vw, 6rem);
  bottom: clamp(2rem, 8vh, 5rem);
  max-width: min(38rem, 46vw);
  pointer-events: none;
}
.scroll-sequence .ss-caption {
  position: absolute;
  left: 0;
  bottom: 60px;
  margin: 0;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  width: 350px;
}
.scroll-sequence .ss-caption-active {
  opacity: 1;
  transform: translateY(0);
  width: 350px;
}
.scroll-sequence .ss-caption-index {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  color: var(--ss-accent-light);
  margin-bottom: 1rem;
}
.scroll-sequence .ss-caption-kicker {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ss-sand-dim);
  margin-bottom: 0.75rem;
}
.scroll-sequence .ss-caption-title {
  font-weight: 900;
  letter-spacing: -0.015em;
  font-size: clamp(1.9rem, 4.5vw, 3.4rem);
  line-height: 1.02;
  margin: 0 0 1rem;
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
  color: #fff;

}
.scroll-sequence .ss-caption-body {
  font-size: clamp(0.95rem, 1.3vw, 1.05rem);
  line-height: 1.6;
  color: var(--ss-sand);
  margin: 0;
  max-width: 34rem;
  text-shadow: 0 1px 16px rgba(0, 0, 0, 0.6);
}

/* Brand */
.scroll-sequence .ss-brand {
  position: absolute;
  top: clamp(1.4rem, 4vh, 2.4rem);
  left: clamp(1.5rem, 6vw, 6rem);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  pointer-events: none;
}
.scroll-sequence .ss-brand-mark {
  font-size: 1.05rem;
  letter-spacing: 0.5em;
  font-weight: 500;
}
.scroll-sequence .ss-brand-sub {
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  color: var(--ss-sand-dim);
}

/* Scroll hint */
.scroll-sequence .ss-hint {
  position: absolute;
  right: clamp(1.5rem, 6vw, 5rem);
  bottom: clamp(2rem, 8vh, 4rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ss-sand-dim);
  transition: opacity 0.6s ease;
}
.scroll-sequence .ss-hint-hidden {
  opacity: 0;
}
.scroll-sequence .ss-hint-line {
  width: 1px;
  height: 46px;
  background: linear-gradient(to bottom, var(--ss-sand-dim), transparent);
  animation: tfHintPulse 2s ease-in-out infinite;
  transform-origin: top;
}
@keyframes tfHintPulse {
  0%,
  100% {
    transform: scaleY(0.4);
    opacity: 0.4;
  }
  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

/* Loader */
.scroll-sequence .ss-loader {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: radial-gradient(120% 120% at 50% 30%, #1a120b, #0d0906 70%);
  opacity: 1;
  transition: opacity 0.8s ease;
}
.scroll-sequence .ss-loader-hidden {
  opacity: 0;
  pointer-events: none;
}
.scroll-sequence .ss-loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.scroll-sequence .ss-loader-mark {
  font-size: 1.3rem;
  letter-spacing: 0.5em;
  padding-left: 0.5em;
  margin-bottom: 2rem;
}
.scroll-sequence .ss-loader-bar {
  width: min(260px, 60vw);
  height: 1px;
  background: rgba(233, 221, 201, 0.16);
  overflow: hidden;
}
.scroll-sequence .ss-loader-fill {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--ss-accent), var(--ss-accent-light));
  transition: width 0.25s ease;
}
.scroll-sequence .ss-loader-pct {
  margin-top: 1rem;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--ss-sand);
}

@media (max-width: 768px) {
  .scroll-sequence .ss-captions {
    max-width: 88vw;
    left: 1.25rem;
    bottom: 6.5rem;
  }
  .scroll-sequence .ss-hint {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-sequence .ss-hint-line {
    animation: none;
  }
}