/* Keyframe Navigator Module - Apple-style dot navigation */

.keyframe-navigator {
  height: 100vh;
  position: relative;
  background-color: #000;
}

.keyframe-navigator__canvas-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.keyframe-navigator__canvas {
  display: block;
  max-width: 100%;
  max-height: min(80vh, 1020px);
  /* Initial state - subtle blur, scaled down, shifted up */
  opacity: 0.4;
  transform: scale(0.96) translateY(20px);
  filter: blur(6px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1.1s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Revealed state - crisp, full scale, in position */
.keyframe-navigator__canvas.is-revealed {
  opacity: 1;
  transform: scale(1) translateY(0);
  filter: blur(0);
}

/* Hotspots container - sized to match canvas via JS */
.keyframe-navigator__hotspots {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 10;
  overflow: visible;
}

/* Individual hotspot wrapper */
.keyframe-navigator__hotspot {
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: none;
  visibility: hidden; /* Hidden by default for measurement */
}

.keyframe-navigator__hotspot.is-visible {
  visibility: visible;
}

/* Direction: left */
.keyframe-navigator__hotspot[data-direction="left"] .keyframe-navigator__hotspot-line {
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  width: clamp(80px, 10vw, 200px);
  height: 1px;
}

.keyframe-navigator__hotspot[data-direction="left"] .keyframe-navigator__hotspot-line::after {
  transform-origin: right center;
  transform: scaleX(0);
}

.keyframe-navigator__hotspot[data-direction="left"] .keyframe-navigator__hotspot-content {
  right: calc(100% + clamp(80px, 10vw, 200px));
  top: 50%;
  transform: translateY(-50%) translateX(10px);
}

.keyframe-navigator__hotspot[data-direction="left"].is-visible .keyframe-navigator__hotspot-line::after {
  transform: scaleX(1);
}

.keyframe-navigator__hotspot[data-direction="left"].is-visible .keyframe-navigator__hotspot-content {
  transform: translateY(-50%) translateX(0);
}

/* Direction: right */
.keyframe-navigator__hotspot[data-direction="right"] .keyframe-navigator__hotspot-line {
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  width: clamp(80px, 10vw, 200px);
  height: 1px;
}

.keyframe-navigator__hotspot[data-direction="right"] .keyframe-navigator__hotspot-line::after {
  transform-origin: left center;
  transform: scaleX(0);
}

.keyframe-navigator__hotspot[data-direction="right"] .keyframe-navigator__hotspot-content {
  left: calc(100% + clamp(80px, 10vw, 200px));
  top: 50%;
  transform: translateY(-50%) translateX(-10px);
}

.keyframe-navigator__hotspot[data-direction="right"].is-visible .keyframe-navigator__hotspot-line::after {
  transform: scaleX(1);
}

.keyframe-navigator__hotspot[data-direction="right"].is-visible .keyframe-navigator__hotspot-content {
  transform: translateY(-50%) translateX(0);
}

/* Direction: top */
.keyframe-navigator__hotspot[data-direction="top"] .keyframe-navigator__hotspot-line {
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 60px;
}

.keyframe-navigator__hotspot[data-direction="top"] .keyframe-navigator__hotspot-line::after {
  transform-origin: center bottom;
  transform: scaleY(0);
}

.keyframe-navigator__hotspot[data-direction="top"] .keyframe-navigator__hotspot-content {
  bottom: calc(100% + 60px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
}

.keyframe-navigator__hotspot[data-direction="top"].is-visible .keyframe-navigator__hotspot-line::after {
  transform: scaleY(1);
}

.keyframe-navigator__hotspot[data-direction="top"].is-visible .keyframe-navigator__hotspot-content {
  transform: translateX(-50%) translateY(0);
}

/* Direction: bottom */
.keyframe-navigator__hotspot[data-direction="bottom"] .keyframe-navigator__hotspot-line {
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 60px;
}

.keyframe-navigator__hotspot[data-direction="bottom"] .keyframe-navigator__hotspot-line::after {
  transform-origin: center top;
  transform: scaleY(0);
}

.keyframe-navigator__hotspot[data-direction="bottom"] .keyframe-navigator__hotspot-content {
  top: calc(100% + 60px);
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
}

.keyframe-navigator__hotspot[data-direction="bottom"].is-visible .keyframe-navigator__hotspot-line::after {
  transform: scaleY(1);
}

.keyframe-navigator__hotspot[data-direction="bottom"].is-visible .keyframe-navigator__hotspot-content {
  transform: translateX(-50%) translateY(0);
}

/* Visible state animations (common) */
.keyframe-navigator__hotspot.is-visible .keyframe-navigator__hotspot-dot {
  opacity: 1;
  transform: scale(1);
}

.keyframe-navigator__hotspot.is-visible .keyframe-navigator__hotspot-line {
  opacity: 1;
}

.keyframe-navigator__hotspot.is-visible .keyframe-navigator__hotspot-content {
  opacity: 1;
}

/* Hotspot dot */
.keyframe-navigator__hotspot-dot {
  position: relative;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.25),
              0 0 12px rgba(255, 255, 255, 0.4);
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 0.3s ease, transform 0.4s cubic-bezier(0.22, 1.8, 0.36, 1);
  z-index: 2;
}

/* Pulse animation */
.keyframe-navigator__hotspot-dot::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: translate(-50%, -50%);
  animation: hotspot-pulse 2s ease-in-out infinite;
  animation-delay: var(--pulse-delay, 0s);
}

/* Hotspot line */
.keyframe-navigator__hotspot-line {
  position: absolute;
  background: rgba(255, 255, 255, 0.6);
  opacity: 0;
  transition: opacity 0.3s ease 0.15s;
  z-index: 1;
}

/* Animated draw effect */
.keyframe-navigator__hotspot-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.6);
  transform: scaleX(0);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.2s;
}

/* Hotspot content box */
.keyframe-navigator__hotspot-content {
  position: absolute;
  max-width: 280px;
  min-width: 180px;
  padding: 12px 16px;
  background: rgba(30, 30, 30, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.4s ease 0.35s, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.35s;
  z-index: 3;
  pointer-events: auto;
}

.keyframe-navigator__hotspot-content p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.9);
}

/* Apple-style floating indicator bar with bubble animation */
.keyframe-navigator__controls {
  position: absolute;
  bottom: 5vh;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Visible state - trigger all animations */
.keyframe-navigator__controls.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* All backgrounds pop up together from center */
.keyframe-navigator__controls.is-visible .keyframe-navigator__nav-bg,
.keyframe-navigator__controls.is-visible .keyframe-navigator__bg {
  animation: bg-pop-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

/* Split apart */
.keyframe-navigator__controls.is-visible .keyframe-navigator__nav-btn--prev {
  animation: split-left 0.4s cubic-bezier(0.22, 1.8, 0.36, 1) 0.5s forwards;
}

.keyframe-navigator__controls.is-visible .keyframe-navigator__nav-btn--next {
  animation: split-right 0.4s cubic-bezier(0.22, 1.8, 0.36, 1) 0.5s forwards;
}

/* Dots background expands after split starts */
.keyframe-navigator__controls.is-visible .keyframe-navigator__bg {
  animation: bg-pop-in 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards,
             bg-expand 0.3s ease 0.6s forwards;
}

/* Nav button icons fade in */
.keyframe-navigator__controls.is-visible .keyframe-navigator__nav-btn svg {
  animation: dot-fade-in 0.25s ease 0.7s forwards;
}

.keyframe-navigator__controls.is-visible .keyframe-navigator__dot {
  animation: dot-fade-in 0.3s cubic-bezier(0.22, 1.8, 0.36, 1) forwards;
}

/* Staggered delays for each dot (80ms apart for visible cascade) */
.keyframe-navigator__controls.is-visible .keyframe-navigator__dot:nth-child(1) { animation-delay: 0.75s; }
.keyframe-navigator__controls.is-visible .keyframe-navigator__dot:nth-child(2) { animation-delay: 0.83s; }
.keyframe-navigator__controls.is-visible .keyframe-navigator__dot:nth-child(3) { animation-delay: 0.91s; }
.keyframe-navigator__controls.is-visible .keyframe-navigator__dot:nth-child(4) { animation-delay: 0.99s; }
.keyframe-navigator__controls.is-visible .keyframe-navigator__dot:nth-child(5) { animation-delay: 1.07s; }
.keyframe-navigator__controls.is-visible .keyframe-navigator__dot:nth-child(6) { animation-delay: 1.15s; }
.keyframe-navigator__controls.is-visible .keyframe-navigator__dot:nth-child(7) { animation-delay: 1.23s; }
.keyframe-navigator__controls.is-visible .keyframe-navigator__dot:nth-child(8) { animation-delay: 1.31s; }

/* Fixed to viewport bottom (default while in section) */
.keyframe-navigator__controls.is-fixed-bottom {
  position: fixed;
  bottom: 5vh;
  top: auto;
}

/* Absolute at section bottom (when leaving at bottom) */
.keyframe-navigator__controls.is-absolute-bottom {
  position: absolute;
  bottom: 5vh;
  top: auto;
}

/* Absolute at section top (when scrolled past at top) */
.keyframe-navigator__controls.is-absolute-top {
  position: absolute;
  top: 5vh;
  bottom: auto;
}

/* Nav button background (circle) */
.keyframe-navigator__nav-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) translateY(var(--pop-start-y, 100px)) scale(1);
  width: 56px;
  height: 56px;
  border-radius: 28px;
  background: rgba(30, 30, 30, 0.7);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  pointer-events: none;
}

.keyframe-navigator__nav-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s ease;
  margin: 0;
}

.keyframe-navigator__nav-btn svg {
  width: 24px;
  height: 24px;
  position: relative;
  z-index: 1;
  opacity: 0;
  transform: scale(0.5);
}

.keyframe-navigator__nav-btn:hover:not(:disabled) {
  color: #fff;
}

.keyframe-navigator__nav-btn:hover:not(:disabled) .keyframe-navigator__nav-bg {
  background: rgba(50, 50, 50, 0.75);
}

.keyframe-navigator__nav-btn:focus {
  outline: none;
}

.keyframe-navigator__nav-btn:focus-visible .keyframe-navigator__nav-bg {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.keyframe-navigator__nav-btn:disabled {
  color: rgba(255, 255, 255, 0.25);
  cursor: not-allowed;
}

/* Start both buttons at center (absolute positioned, centered, hidden) */
.keyframe-navigator__nav-btn--prev,
.keyframe-navigator__nav-btn--next {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
}

/* Dotnav wrapper */
.keyframe-navigator__dotnav {
  position: relative;
  z-index: 1;
}

/* Separate background element for circle→pill morph */
.keyframe-navigator__bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) translateY(30px) scale(0);
  width: 56px;
  height: 56px;
  border-radius: 28px;
  background: rgba(30, 30, 30, 0.7);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.keyframe-navigator__bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 0 32px;
  height: 56px;
}

.keyframe-navigator__dot {
  position: relative;
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: background 0.2s ease, width 0.3s cubic-bezier(0.22, 1.8, 0.36, 1);
  opacity: 0;
  transform: scale(0.5);
}

/* Invisible expanded click area */
.keyframe-navigator__dot::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.keyframe-navigator__dot:hover {
  background: rgba(255, 255, 255, 0.6);
}

.keyframe-navigator__dot:focus {
  outline: none;
}

.keyframe-navigator__dot:focus-visible {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

/* Active state - bar shape instead of dot */
.keyframe-navigator__dot.is-active {
  width: 24px;
  height: 8px;
  border-radius: 4px;
  background: #fff;
}

/* Keyframe Animations */

/* Background pop-in (circle appears from below, bounces) */
@keyframes bg-pop-in {
  0% {
    transform: translate(-50%, -50%) translateY(var(--pop-start-y, 100px)) scale(1);
  }
  70% {
    transform: translate(-50%, -50%) translateY(-35px) scale(1.2);
  }
  84% {
    transform: translate(-50%, -50%) translateY(12px) scale(0.88);
  }
  94% {
    transform: translate(-50%, -50%) translateY(-8px) scale(1.06);
  }
  100% {
    transform: translate(-50%, -50%) translateY(0) scale(1);
  }
}

/* Split animations - buttons move from center to sides and fade in */
@keyframes split-left {
  0% {
    transform: translateX(-50%);
    opacity: 0;
  }
  100% {
    transform: translateX(calc(-50% - var(--btn-offset, 180px)));
    opacity: 1;
  }
}

@keyframes split-right {
  0% {
    transform: translateX(-50%);
    opacity: 0;
  }
  100% {
    transform: translateX(calc(-50% + var(--btn-offset, 180px)));
    opacity: 1;
  }
}

/* Background expands from circle (56px) to pill (dynamic width) */
@keyframes bg-expand {
  0% {
    width: 56px;
  }
  100% {
    width: var(--bar-width, 280px);
  }
}

/* Dots fade in after background expands */
@keyframes dot-fade-in {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Hotspot pulse animation */
@keyframes hotspot-pulse {
  0%, 100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.4;
  }
  50% {
    transform: translate(-50%, -50%) scale(2);
    opacity: 0;
  }
}

/* ==============================================
   MOBILE STYLES
   ============================================== */

@media (max-width: 767px) {
  .keyframe-navigator__bar {
    gap: 10px;
  }

  /* Hide lines and inline content on mobile */
  .keyframe-navigator__hotspot-line,
  .keyframe-navigator__hotspot-content {
    display: none !important;
  }

  /* Larger tappable dots (44px min tap target) */
  .keyframe-navigator__hotspot {
    pointer-events: auto;
    cursor: pointer;
  }

  /* Bring selected hotspot above overlapping ones */
  .keyframe-navigator__hotspot.is-selected {
    z-index: 100;
  }

  .keyframe-navigator__hotspot-dot {
    width: 26px;
    height: 26px;
    background: #0080c8;
    border: 2px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 0 4px rgba(0, 128, 200, 0.3),
                0 2px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.15s ease, filter 0.15s ease;
  }

  /* Tap feedback animation */
  .keyframe-navigator__hotspot-dot:active {
    transform: scale(0.85);
    filter: brightness(1.3);
  }

  /* Plus icon inside dot */
  .keyframe-navigator__hotspot-dot::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 12px;
    transform: translate(-50%, -50%);
    pointer-events: none;
    background:
      linear-gradient(#fff, #fff) center/2px 12px no-repeat,
      linear-gradient(#fff, #fff) center/12px 2px no-repeat;
  }

  /* Brand blue pulse animation */
  .keyframe-navigator__hotspot-dot::before {
    background: rgba(0, 128, 200, 0.4);
    animation: hotspot-pulse-mobile 1.8s ease-in-out infinite;
    animation-delay: var(--pulse-delay, 0s);
    pointer-events: none;
  }
}

/* Mobile-specific split animations */
@media (max-width: 767px) {
  @keyframes split-left {
    0% {
      transform: translateX(-50%);
      opacity: 0;
    }
    100% {
      transform: translateX(calc(-50% - var(--btn-offset, 130px)));
      opacity: 1;
    }
  }

  @keyframes split-right {
    0% {
      transform: translateX(-50%);
      opacity: 0;
    }
    100% {
      transform: translateX(calc(-50% + var(--btn-offset, 130px)));
      opacity: 1;
    }
  }

  @keyframes bg-expand {
    0% {
      width: 56px;
    }
    100% {
      width: var(--bar-width, 200px);
    }
  }
}

/* Mobile pulsating animation (brand blue, more pronounced) */
@keyframes hotspot-pulse-mobile {
  0%, 100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.5;
    background: rgba(0, 128, 200, 0.4);
  }
  50% {
    transform: translate(-50%, -50%) scale(2.8);
    opacity: 0;
    background: rgba(0, 128, 200, 0.2);
  }
}

/* ==============================================
   HOTSPOT MODAL OVERLAY
   ============================================== */

.keyframe-navigator__modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.keyframe-navigator__modal.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.keyframe-navigator__modal.is-visible .keyframe-navigator__modal-content {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* Dark backdrop (tap to close) */
.keyframe-navigator__modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
}

/* Centered content box */
.keyframe-navigator__modal-content {
  position: relative;
  max-width: 340px;
  width: 100%;
  padding: 24px;
  padding-top: 44px;
  background: rgba(40, 40, 40, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  opacity: 0;
  transform: scale(0.9) translateY(20px);
  transition: opacity 0.35s cubic-bezier(0.22, 1, 0.36, 1), transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.keyframe-navigator__modal-content p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
}

/* Close X button */
.keyframe-navigator__modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.keyframe-navigator__modal-close svg {
  width: 14px;
  height: 14px;
}

.keyframe-navigator__modal-close:hover,
.keyframe-navigator__modal-close:focus {
  background: rgba(255, 255, 255, 0.25);
  outline: none;
}

.keyframe-navigator__modal-close:focus-visible {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}