/* Signal sites — cinematic master page */

:root {
  --signal-bg: #020305;
  --signal-green: #2f8f5b;
  --signal-gold: #b8952c;
  --signal-gold-soft: #d4b45a;
  --signal-mute: rgba(168, 176, 186, 0.55);
  --signal-energy: 0;
  --signal-bass: 0;
}

.signal-body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 50% 38%, #0b121c 0%, var(--signal-bg) 52%, #000 100%);
  color: var(--signal-mute);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  overflow: hidden;
}

.signal-vh {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.signal-shell button:focus-visible {
  outline: 2px solid rgba(184, 149, 44, 0.85);
  outline-offset: 3px;
}

.signal-scene {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1.25rem 4.5rem;
  isolation: isolate;
}

/* Soft atmosphere driven by suite analyser energy */
.signal-scene::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse 85% 60% at 50% 40%,
      rgba(47, 143, 91, calc(var(--signal-energy) * 0.13)) 0%,
      rgba(184, 149, 44, calc(var(--signal-bass) * 0.07)) 38%,
      transparent 68%
    ),
    radial-gradient(
      ellipse 50% 40% at 50% 55%,
      rgba(11, 28, 22, calc(var(--signal-energy) * 0.22)) 0%,
      transparent 70%
    );
}

/* Opening veil — systems coming online */
.signal-veil {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 42%, rgba(11, 18, 28, 0.2) 0%, #000 70%),
    #000;
  animation: signal-veil-lift 2.1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.signal-fragments {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.signal-fragments__slot {
  position: absolute;
  left: var(--x, 50%);
  top: var(--y, 50%);
  transform: translate(-50%, -50%);
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: clamp(0.5rem, 1vw, 0.65rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal-green);
  opacity: 0;
  transition: opacity 1.1s ease;
  white-space: nowrap;
}

/* Fast opacity so analyser energy can breathe through the fade */
.signal-fragments__slot.is-live {
  opacity: calc(0.07 + var(--signal-energy) * 0.32 + var(--signal-bass) * 0.12);
  transition: opacity 0.1s linear;
  filter: brightness(calc(1 + var(--signal-energy) * 0.45));
  text-shadow: 0 0 calc(var(--signal-energy) * 8px) rgba(47, 143, 91, calc(var(--signal-energy) * 0.45));
}

.signal-fragments__slot.is-glitch {
  opacity: calc(0.14 + var(--signal-energy) * 0.38 + var(--signal-bass) * 0.14);
  letter-spacing: calc(0.14em + var(--signal-energy) * 0.12em);
  transform: translate(
    calc(-50% + var(--jitter-x, 0px) + var(--signal-bass) * 2px),
    calc(-50% + var(--jitter-y, 0px))
  );
  text-shadow:
    -1px 0 rgba(80, 220, 140, calc(0.28 + var(--signal-energy) * 0.4)),
    1px 0 rgba(40, 120, 90, calc(0.3 + var(--signal-energy) * 0.35));
  animation: signal-fragment-glitch 0.28s steps(2, end) 2;
}

.signal-fragments__artifact {
  position: absolute;
  left: 0;
  top: 0;
  transform: translate(-50%, -50%);
  overflow: hidden;
  pointer-events: none;
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.55rem;
  line-height: 0.7rem;
  letter-spacing: 0;
  word-break: break-all;
  color: rgba(60, 160, 100, 0.55);
  z-index: 0;
}

.signal-stage {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1.75rem, 4vh, 2.75rem);
  text-align: center;
  max-width: 36rem;
}

.signal-shield {
  width: min(38vw, 250px);
  filter:
    drop-shadow(0 28px 44px rgba(0, 0, 0, 0.92))
    drop-shadow(0 0 28px rgba(170, 185, 205, 0.12))
    drop-shadow(0 0 18px rgba(184, 149, 44, 0.12));
  opacity: 0;
  animation:
    signal-rise-in 1.55s cubic-bezier(0.22, 1, 0.36, 1) 0.45s forwards,
    signal-float 10s ease-in-out 2s infinite;
  transform-style: preserve-3d;
}

.signal-shield__mark {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  animation: signal-metal-breathe 8s ease-in-out infinite;
}

/* Sheen lives in the SVG, clipped to the shield outline */
.signal-shield__sheen {
  transform-box: fill-box;
  transform-origin: center;
  animation: signal-metal-sheen 7.5s ease-in-out infinite;
}

/* Gold command R — flickers online, then glimmers */
.signal-shield__mark .signal-shield__r {
  fill: var(--signal-gold) !important;
  animation: signal-r-online 6.5s ease-in-out infinite;
}

.signal-slogan {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: rgba(170, 178, 188, 0.72);
}

.signal-slogan span {
  display: block;
  opacity: 0;
  animation: signal-fade-up 1.1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.signal-slogan span:nth-child(1) { animation-delay: 1.05s; }
.signal-slogan span:nth-child(2) { animation-delay: 1.28s; }

.signal-awakening {
  appearance: none;
  border: 0;
  background: transparent;
  margin: 0;
  padding: 0.2rem 0.1rem;
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(184, 149, 44, 0.75);
  cursor: pointer;
  opacity: 0;
  animation: signal-fade-up 1s cubic-bezier(0.22, 1, 0.36, 1) 1.55s forwards;
  transition: color 0.35s ease, letter-spacing 0.45s ease;
}

.signal-awakening:hover,
.signal-awakening.is-playing {
  color: rgba(212, 180, 90, 0.95);
}

.signal-awakening.is-playing {
  letter-spacing: 0.3em;
}

/* Suite strip under Awakening — movements, next, repeat */
.signal-explore {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(170, 178, 188, 0.55);
  opacity: 0;
  transform: translateY(0.45rem);
  max-height: 0;
  overflow: hidden;
  pointer-events: none;
  transition:
    opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.signal-explore.is-open {
  opacity: 1;
  transform: translateY(0);
  max-height: 7rem;
  overflow: visible;
  pointer-events: auto;
}

.signal-explore[hidden] {
  display: none;
}

.signal-explore__tracks {
  display: flex;
  gap: 0.35rem;
}

.signal-explore__track,
.signal-explore__tool {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
  padding: 0.35rem 0.55rem;
  opacity: 0;
  transform: translateY(0.3rem);
  transition:
    opacity 0.35s ease,
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    color 0.2s ease,
    border-color 0.2s ease;
}

.signal-explore.is-open .signal-explore__track,
.signal-explore.is-open .signal-explore__tool {
  opacity: 1;
  transform: translateY(0);
}

.signal-explore.is-open .signal-explore__track:nth-child(1) { transition-delay: 0.04s; }
.signal-explore.is-open .signal-explore__track:nth-child(2) { transition-delay: 0.08s; }
.signal-explore.is-open .signal-explore__track:nth-child(3) { transition-delay: 0.12s; }
.signal-explore.is-open .signal-explore__track:nth-child(4) { transition-delay: 0.16s; }
.signal-explore.is-open .signal-explore__track:nth-child(5) { transition-delay: 0.2s; }
.signal-explore.is-open .signal-explore__tool:nth-child(1) { transition-delay: 0.26s; }
.signal-explore.is-open .signal-explore__tool:nth-child(2) { transition-delay: 0.3s; }

.signal-explore__track:hover,
.signal-explore__tool:hover {
  color: rgba(210, 216, 222, 0.92);
}

.signal-explore__track.is-active {
  color: rgba(212, 180, 90, 0.9);
  border-color: rgba(184, 149, 44, 0.28);
}

.signal-explore__tools {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.signal-explore__tool[aria-pressed="true"] {
  color: var(--signal-gold-soft);
}

.signal-explore__mute[aria-pressed="true"] {
  color: rgba(212, 180, 90, 0.9);
}

.signal-explore__volume {
  display: flex;
  align-items: center;
  padding: 0 0.35rem;
  opacity: 0;
  transform: translateY(0.3rem);
  transition:
    opacity 0.35s ease,
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.signal-explore.is-open .signal-explore__volume {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.34s;
}

.signal-explore__volume input[type="range"] {
  width: 5.5rem;
  accent-color: rgba(184, 149, 44, 0.85);
  cursor: pointer;
}

/* Quiet mono tooltips for Awakening / suite controls */
.signal-shell [data-tooltip] {
  position: relative;
}

.signal-shell [data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.4rem);
  transform: translateX(-50%) translateY(0.12rem);
  padding: 0.28rem 0.45rem;
  border: 1px solid rgba(160, 170, 180, 0.14);
  background: rgba(4, 7, 10, 0.94);
  color: rgba(190, 198, 206, 0.88);
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.52rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.22s ease;
  z-index: 6;
}

.signal-shell [data-tooltip]:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (hover: hover) and (pointer: fine) {
  .signal-shell [data-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

@keyframes signal-fragment-glitch {
  0% { clip-path: inset(0 0 0 0); }
  25% { clip-path: inset(35% 0 20% 0); }
  50% { clip-path: inset(10% 0 55% 0); }
  75% { clip-path: inset(60% 0 5% 0); }
  100% { clip-path: inset(0 0 0 0); }
}

@keyframes signal-veil-lift {
  0% { opacity: 1; }
  45% { opacity: 1; }
  100% { opacity: 0; visibility: hidden; }
}

@keyframes signal-rise-in {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.965);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes signal-fade-up {
  from {
    opacity: 0;
    transform: translateY(0.45rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes signal-float {
  0%, 100% { transform: translateY(0) rotateX(1.5deg) rotateZ(-0.3deg); }
  50% { transform: translateY(-8px) rotateX(0deg) rotateZ(0.3deg); }
}

@keyframes signal-metal-breathe {
  0%, 100% { filter: brightness(0.97) contrast(1.04) saturate(0.92); }
  50% { filter: brightness(1.08) contrast(1.08) saturate(1.05); }
}

@keyframes signal-metal-sheen {
  0%, 100% { transform: translateX(14%); opacity: 0.45; }
  50% { transform: translateX(-14%); opacity: 0.95; }
}

@keyframes signal-r-online {
  0% {
    fill: #5a4816 !important;
    opacity: 0.4;
    filter: drop-shadow(0 0 2px rgba(184, 149, 44, 0.15));
  }
  3% {
    fill: #f3dfa0 !important;
    opacity: 1;
    filter:
      drop-shadow(0 0 6px rgba(243, 223, 160, 0.9))
      drop-shadow(0 0 18px rgba(212, 180, 90, 0.7));
  }
  5% {
    fill: #6a5418 !important;
    opacity: 0.28;
    filter: drop-shadow(0 0 2px rgba(184, 149, 44, 0.2));
  }
  7% {
    fill: #e8c85a !important;
    opacity: 1;
    filter:
      drop-shadow(0 0 8px rgba(232, 200, 90, 0.85))
      drop-shadow(0 0 16px rgba(184, 149, 44, 0.55));
  }
  9% { opacity: 0.5; }
  11% {
    fill: var(--signal-gold-soft) !important;
    opacity: 1;
    filter: drop-shadow(0 0 10px rgba(212, 180, 90, 0.55));
  }
  14% { opacity: 0.72; }
  18% {
    fill: var(--signal-gold) !important;
    opacity: 1;
    filter: drop-shadow(0 0 8px rgba(184, 149, 44, 0.45));
  }
  40% {
    fill: #f0d878 !important;
    filter:
      drop-shadow(0 0 10px rgba(240, 216, 120, 0.75))
      drop-shadow(0 0 22px rgba(212, 180, 90, 0.4));
  }
  65% {
    fill: var(--signal-gold) !important;
    filter: drop-shadow(0 0 7px rgba(184, 149, 44, 0.4));
  }
  82% {
    fill: #dcc36a !important;
    filter:
      drop-shadow(0 0 12px rgba(220, 195, 106, 0.65))
      drop-shadow(0 0 4px rgba(255, 240, 180, 0.35));
  }
  100% {
    fill: var(--signal-gold) !important;
    opacity: 1;
    filter: drop-shadow(0 0 8px rgba(184, 149, 44, 0.45));
  }
}

@media (prefers-reduced-motion: reduce) {
  .signal-veil,
  .signal-shield,
  .signal-shield__mark,
  .signal-shield__sheen,
  .signal-shield__mark .signal-shield__r,
  .signal-slogan span,
  .signal-awakening,
  .signal-player {
    animation: none;
  }

  .signal-veil {
    display: none;
  }

  .signal-shield,
  .signal-slogan span,
  .signal-awakening {
    opacity: 1;
    transform: none;
  }

  .signal-player.is-visible {
    opacity: 1;
    transform: none;
  }

  .signal-shield__mark .signal-shield__r {
    fill: var(--signal-gold) !important;
    filter: drop-shadow(0 0 8px rgba(184, 149, 44, 0.45));
    opacity: 1;
  }

  .signal-fragments__slot {
    transition: none;
    animation: none;
  }

  .signal-fragments__artifact {
    display: none;
  }

  .signal-explore,
  .signal-explore__track,
  .signal-explore__tool,
  .signal-explore__volume {
    transition: none;
  }

  .signal-scene::before {
    display: none;
  }

  .signal-fragments__slot.is-live {
    opacity: 0.11;
    filter: none;
    text-shadow: none;
    transition: none;
  }

  .signal-fragments__slot.is-glitch {
    opacity: 0.2;
    letter-spacing: 0.18em;
    transform: translate(-50%, -50%);
  }
}

/* Compact audio control — appears only once playback actually starts */
.signal-player {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 2;
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(170, 178, 188, 0.7);
  opacity: 0;
  transform: translateY(0.35rem);
  transition: opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1), transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.signal-player.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.signal-player[hidden] {
  display: none;
}

.signal-player__bar {
  display: flex;
  align-items: center;
  border: 1px solid rgba(160, 170, 180, 0.12);
  background: rgba(4, 7, 10, 0.78);
  backdrop-filter: blur(12px);
  overflow: visible;
}

.signal-player__play {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
  border-left: 1px solid rgba(160, 170, 180, 0.1);
  padding: 0.55rem 0.7rem;
  font-size: 0.55rem;
  opacity: 0.75;
  min-width: 2rem;
  text-align: center;
}

.signal-player__play:hover {
  color: rgba(210, 216, 222, 0.92);
}

.signal-player__name {
  appearance: none;
  border: 0;
  background: transparent;
  color: rgba(184, 149, 44, 0.8);
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  padding: 0.55rem 0.65rem 0.55rem 0.75rem;
  cursor: pointer;
}

.signal-player__name:hover {
  color: rgba(212, 180, 90, 0.95);
}

@media (max-width: 640px) {
  .signal-shield {
    width: min(52vw, 200px);
  }

  .signal-fragments__slot {
    font-size: 0.5rem;
  }

  .signal-player {
    right: 1rem;
    bottom: 1rem;
  }

  .signal-scene {
    padding-bottom: 5.5rem;
  }
}