:root {
  --blue-0: #060a2a;
  --blue-1: #0d1f5a;
  --blue-2: #1d4ca8;
  --blue-3: #2f74d6;
  --purple-1: #3b2b78;
  --purple-2: #6142ad;
  --purple-3: #8a63d8;
  --accent-soft: #b6b0ff;
  --ink-soft: #ddd8ff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background: var(--blue-0);
  overflow: hidden;
}

.scene {
  position: relative;
  width: 100vw;
  height: 100vh;
  isolation: isolate;
}

.bg {
  position: absolute;
  inset: -12vmax;
  background: #060a2a;
}

.plane,
.wave,
.mist {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: none;
}

.plane {
  mix-blend-mode: screen;
  transform-style: preserve-3d;
  will-change: background-position, transform;
}

.plane::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(190, 172, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(157, 209, 255, 0.16) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px;
  mix-blend-mode: screen;
  opacity: 0.42;
}

.plane-a {
  background: repeating-linear-gradient(
      45deg,
      rgba(185, 169, 255, 0.2) 0 18px,
      rgba(40, 48, 142, 0.2) 18px 36px
    ),
    linear-gradient(140deg, rgba(16, 27, 86, 0.78), rgba(118, 104, 232, 0.24));
  clip-path: polygon(0 17%, 62% 0, 100% 48%, 43% 74%, 0 62%);
  animation: planeDriftA 24s linear infinite;
  z-index: 1;
}

.plane-b {
  background: repeating-linear-gradient(
      -45deg,
      rgba(156, 141, 250, 0.18) 0 14px,
      rgba(18, 37, 118, 0.11) 14px 28px
    ),
    linear-gradient(200deg, rgba(64, 78, 190, 0.36), rgba(14, 22, 88, 0.3));
  clip-path: polygon(18% 51%, 100% 23%, 87% 100%, 0 90%, 0 66%);
  animation: planeDriftB 28s linear infinite;
  z-index: 2;
}

.plane-c {
  background: repeating-linear-gradient(
      90deg,
      rgba(173, 160, 255, 0.16) 0 10px,
      rgba(19, 44, 136, 0.15) 10px 22px
    ),
    linear-gradient(330deg, rgba(138, 156, 255, 0.21), rgba(31, 33, 112, 0.08));
  clip-path: polygon(0 0, 42% 13%, 24% 58%, 0 52%);
  animation: planeDriftC 20s linear infinite;
  z-index: 3;
}

.wave-a {
  background-image: linear-gradient(
      135deg,
      rgba(181, 170, 255, 0.14) 25%,
      transparent 25% 50%,
      rgba(131, 198, 255, 0.12) 50% 75%,
      transparent 75%
    ),
    linear-gradient(180deg, transparent, rgba(86, 77, 198, 0.23));
  background-size: 120px 120px, 100% 100%;
  clip-path: polygon(0 62%, 100% 50%, 100% 100%, 0 100%);
  animation: waveShiftA 18s linear infinite;
  will-change: background-position;
  z-index: 4;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.wave-b {
  background-image: linear-gradient(
      45deg,
      rgba(152, 134, 245, 0.13) 25%,
      transparent 25% 50%,
      rgba(110, 187, 255, 0.1) 50% 75%,
      transparent 75%
    ),
    linear-gradient(180deg, transparent, rgba(46, 86, 188, 0.28));
  background-size: 92px 92px, 100% 100%;
  clip-path: polygon(0 70%, 100% 58%, 100% 100%, 0 100%);
  animation: waveShiftB 22s linear infinite;
  will-change: background-position;
  z-index: 5;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.mist {
  background: linear-gradient(
      90deg,
      transparent 0 10%,
      rgba(176, 158, 255, 0.09) 10% 12%,
      transparent 12% 28%,
      rgba(126, 198, 255, 0.08) 28% 30%,
      transparent 30% 100%
    ),
    linear-gradient(180deg, rgba(95, 122, 255, 0.1), transparent 40%);
  background-size: 320px 100%, 100% 100%;
  mix-blend-mode: screen;
  animation: mistScan 26s linear infinite;
  will-change: background-position, opacity;
  z-index: 6;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.bg::before,
.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.bg::before {
  background-image: linear-gradient(90deg, rgba(123, 196, 255, 0.2) 1px, transparent 1px);
  background-size: 56px 100%;
  opacity: 0.45;
  animation: verticalLineDrift 18s linear infinite;
}

.bg::after {
  background-image: linear-gradient(
    90deg,
    transparent 0%,
    rgba(140, 215, 255, 0.08) 30%,
    rgba(198, 238, 255, 0.45) 48%,
    rgba(140, 215, 255, 0.08) 70%,
    transparent 100%
  );
  background-repeat: no-repeat;
  background-size: clamp(84px, 14vw, 210px) 100%;
  background-position: -28vw 0;
  opacity: 0.78;
  mix-blend-mode: screen;
  animation: vhsScanPass 14s linear infinite;
}

.loading-lockup {
  position: absolute;
  inset: 0;
  margin: auto;
  width: min(70ch, 88vw);
  height: fit-content;
  text-align: center;
  color: var(--ink-soft);
  text-shadow: 0 0 22px rgba(145, 130, 245, 0.36);
  z-index: 2;
}

.loading-lockup h1 {
  margin: 0;
  font-size: clamp(1.7rem, 4.7vw, 3.7rem);
  letter-spacing: 0.04em;
  font-weight: 650;
}

.loading-lockup p {
  margin: 0.8rem 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5em;
  font-size: clamp(0.7rem, 1.5vw, 0.9rem);
  opacity: 0.8;
}

.dots {
  display: inline-flex;
  gap: 0.45rem;
}

.dots span {
  width: 0.45rem;
  aspect-ratio: 1 / 1;
  border-radius: 999px;
  background: var(--accent-soft);
  box-shadow: 0 0 14px rgba(166, 149, 255, 0.82);
  animation: blink 1.4s ease-in-out infinite;
}

.dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.dots span:nth-child(3) {
  animation-delay: 0.4s;
}

.birds-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 1;
}

.chat-launcher {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(200, 214, 255, 0.55);
  background: linear-gradient(180deg, rgba(20, 45, 115, 0.9), rgba(12, 25, 74, 0.95));
  color: #eef2ff;
  border-radius: 999px;
  padding: 0.6rem 0.9rem;
  font: inherit;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  box-shadow: 0 10px 28px rgba(2, 7, 27, 0.55);
  cursor: pointer;
}

.chat-launcher:hover {
  filter: brightness(1.1);
}

.chat-launcher-icon {
  font-size: 1rem;
  line-height: 1;
}

.chat-panel {
  position: fixed;
  right: 1.25rem;
  bottom: 4.7rem;
  width: min(92vw, 340px);
  z-index: 4;
  background: rgba(10, 21, 63, 0.92);
  border: 1px solid rgba(168, 188, 255, 0.42);
  border-radius: 0.9rem;
  padding: 0.85rem;
  color: #edf1ff;
  backdrop-filter: blur(6px);
  box-shadow: 0 16px 44px rgba(4, 9, 28, 0.65);
  opacity: 0;
  transform: translateY(0.4rem) scale(0.98);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.chat-panel.is-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.chat-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.chat-panel-head h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.chat-close {
  width: 2rem;
  height: 2rem;
  border: 0;
  border-radius: 999px;
  background: rgba(202, 216, 255, 0.18);
  color: #eef2ff;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
}

.chat-note {
  margin: 0.55rem 0 0.7rem;
  font-size: 0.76rem;
  line-height: 1.3;
  opacity: 0.78;
}

.chat-form {
  display: grid;
  gap: 0.45rem;
}

.chat-form label {
  font-size: 0.78rem;
  opacity: 0.9;
}

.chat-form textarea {
  width: 100%;
  resize: vertical;
  min-height: 6.5rem;
  border-radius: 0.6rem;
  border: 1px solid rgba(180, 197, 255, 0.35);
  background: rgba(9, 18, 50, 0.88);
  color: #f3f6ff;
  padding: 0.7rem;
  font: inherit;
  font-size: 0.9rem;
}

.chat-status {
  min-height: 1rem;
  font-size: 0.78rem;
  opacity: 0.88;
}

.chat-send {
  justify-self: end;
  border: 0;
  border-radius: 999px;
  padding: 0.45rem 0.95rem;
  font: inherit;
  font-size: 0.85rem;
  color: #0a1542;
  background: #cdd9ff;
  cursor: pointer;
}

.chat-send:disabled {
  opacity: 0.68;
  cursor: wait;
}

.flock {
  position: absolute;
  inset: 0;
}

.bird {
  position: absolute;
  width: var(--size);
  height: calc(var(--size) * 0.72);
  top: var(--y);
  left: 110vw;
  opacity: var(--opacity);
  filter: drop-shadow(0 0 8px rgba(163, 148, 255, 0.36));
  animation: flyAcross var(--duration) linear forwards;
  animation-delay: var(--delay);
}

.bird svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.bird .wing-left,
.bird .wing-right {
  transform-origin: center;
  animation: flap var(--flap) ease-in-out infinite alternate;
}

.bird .wing-right {
  animation-delay: calc(var(--flap) / -2);
}

@keyframes flyAcross {
  0% {
    transform: translateX(0) translateY(0) scale(var(--scale));
  }
  25% {
    transform: translateX(-35vw) translateY(-0.55rem) scale(var(--scale));
  }
  55% {
    transform: translateX(-73vw) translateY(0.5rem) scale(var(--scale));
  }
  100% {
    transform: translateX(-150vw) translateY(-0.2rem) scale(var(--scale));
  }
}

@keyframes flap {
  from {
    transform: scaleY(0.82) rotate(-5deg);
  }
  to {
    transform: scaleY(1.06) rotate(5deg);
  }
}

@keyframes blink {
  0%,
  70%,
  100% {
    opacity: 0.35;
    transform: translateY(0);
  }
  35% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

@keyframes waveShiftA {
  from {
    background-position: 0 0, 0 0;
  }
  to {
    background-position: 120px 120px, 0 0;
  }
}

@keyframes waveShiftB {
  from {
    background-position: 0 0, 0 0;
  }
  to {
    background-position: -92px 92px, 0 0;
  }
}

@keyframes planeDriftA {
  from {
    transform: translate3d(-1.2%, 0, 0) skewX(-1deg) scale(1.02);
    background-position: 0 0, 0 0;
  }
  to {
    transform: translate3d(1.2%, -0.8%, 0) skewX(1deg) scale(1.06);
    background-position: 72px 72px, 0 0;
  }
}

@keyframes planeDriftB {
  from {
    transform: translate3d(1.5%, 0.8%, 0) skewY(-1deg) scale(1);
    background-position: 0 0, 0 0;
  }
  to {
    transform: translate3d(-1.5%, -1%, 0) skewY(1deg) scale(1.05);
    background-position: -56px 56px, 0 0;
  }
}

@keyframes planeDriftC {
  from {
    transform: translate3d(0.8%, -1%, 0) skewX(1deg) scale(1.03);
    background-position: 0 0, 0 0;
  }
  to {
    transform: translate3d(-0.8%, 0.9%, 0) skewX(-1deg) scale(1.08);
    background-position: 44px 0, 0 0;
  }
}

@keyframes mistScan {
  from {
    background-position: 0 0, 0 0;
    opacity: 0.55;
  }
  to {
    background-position: 320px 0, 0 0;
    opacity: 0.82;
  }
}

@keyframes verticalLineDrift {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 56px 0;
  }
}

@keyframes vhsScanPass {
  from {
    background-position: -28vw 0;
    opacity: 0.78;
  }
  50% {
    background-position: 50vw 0;
    opacity: 0;
  }
  to {
    background-position: 128vw 0;
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .plane,
  .wave,
  .mist,
  .bird,
  .bird .wing-left,
  .bird .wing-right,
  .dots span {
    animation: none !important;
  }

  .bird {
    display: none;
  }

  .chat-panel {
    transition: none;
  }

}

@media (max-width: 640px) {
  .chat-launcher {
    right: 0.75rem;
    bottom: 0.75rem;
  }

  .chat-launcher-label {
    display: none;
  }

  .chat-panel {
    right: 0.75rem;
    bottom: 4rem;
  }
}