:root {
  color-scheme: light;
  --paper: oklch(95% 0.025 87);
  --ink: oklch(18% 0.025 255);
  --muted: oklch(44% 0.03 245);
  --line: oklch(76% 0.045 88);
  --panel: oklch(98% 0.018 90 / 0.91);
  --red: oklch(55% 0.19 28);
  --blue: oklch(47% 0.13 238);
  --green: oklch(57% 0.13 150);
  --gold: oklch(74% 0.14 82);
  --shadow: 0 20px 60px oklch(18% 0.035 255 / 0.18);
  font-family:
    "Avenir Next", "Segoe UI", "Trebuchet MS", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  background:
    linear-gradient(90deg, oklch(18% 0.03 255 / 0.05) 1px, transparent 1px),
    linear-gradient(0deg, oklch(18% 0.03 255 / 0.04) 1px, transparent 1px),
    radial-gradient(circle at 32% 20%, oklch(88% 0.09 82 / 0.8), transparent 34%),
    radial-gradient(circle at 80% 76%, oklch(86% 0.07 185 / 0.55), transparent 30%),
    var(--paper);
  background-size:
    48px 48px,
    48px 48px,
    100% 100%,
    100% 100%;
  color: var(--ink);
  overflow: hidden;
  overscroll-behavior: none;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100%;
  position: relative;
  isolation: isolate;
}

.topbar {
  position: fixed;
  z-index: 20;
  top: clamp(12px, 2vw, 22px);
  left: clamp(12px, 2vw, 22px);
  right: clamp(12px, 2vw, 22px);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  pointer-events: none;
}

.brand-block,
.toolbar,
.rail,
.detail-panel {
  pointer-events: auto;
  border: 1px solid oklch(22% 0.02 255 / 0.16);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.brand-block {
  padding: 13px 16px 15px;
  width: min(300px, calc(100vw - 24px));
}

.kicker,
.panel-kicker {
  margin: 0;
  color: var(--red);
  font-size: 0.74rem;
  line-height: 1.2;
  text-transform: uppercase;
}

.brand-block h1 {
  margin: 2px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.4rem, 5vw, 4.9rem);
  font-weight: 500;
  line-height: 0.9;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
}

.icon-button,
.text-button,
.segment,
.close-button {
  border: 1px solid oklch(22% 0.03 255 / 0.2);
  background: oklch(99% 0.014 90 / 0.86);
  color: var(--ink);
  min-height: 40px;
}

.icon-button {
  width: 40px;
  font-size: 1.35rem;
}

.text-button,
.segment {
  padding: 0 14px;
}

.icon-button:hover,
.text-button:hover,
.segment:hover,
.close-button:hover {
  background: oklch(91% 0.1 82);
}

#zoomReadout {
  min-width: 58px;
  text-align: center;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.rail {
  position: fixed;
  z-index: 18;
  left: clamp(12px, 2vw, 22px);
  bottom: clamp(12px, 2vw, 22px);
  width: min(380px, calc(100vw - 24px));
  padding: 12px;
}

.search {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.search input {
  min-height: 42px;
  width: 100%;
  border: 1px solid oklch(22% 0.03 255 / 0.18);
  background: oklch(99% 0.014 90 / 0.86);
  color: var(--ink);
  padding: 0 12px;
  outline: none;
}

.search input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px oklch(47% 0.13 238 / 0.18);
}

.segments {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-top: 10px;
}

.segment.active {
  color: oklch(98% 0.02 90);
  background: var(--ink);
}

.segment::before {
  content: "";
  display: inline-block;
  width: 0.72em;
  height: 0.72em;
  margin-right: 0.42em;
  border: 1.5px solid currentColor;
  vertical-align: -0.05em;
}

.segment[data-filter="all"]::before {
  box-shadow:
    0.28em 0 0 -0.08em currentColor,
    0 0.28em 0 -0.08em currentColor,
    0.28em 0.28em 0 -0.08em currentColor;
}

.segment[data-filter="unplayed"]::before {
  border-radius: 50%;
}

.segment[data-filter="solved"]::before {
  width: 0.78em;
  height: 0.42em;
  border-top: 0;
  border-right: 0;
  transform: rotate(-45deg);
}

.readout {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.canvas-stage {
  position: fixed;
  inset: 0;
  overflow: hidden;
  touch-action: none;
  cursor: grab;
  user-select: none;
}

.canvas-stage.dragging {
  cursor: grabbing;
}

.grid-layer {
  position: absolute;
  inset: -20%;
  opacity: 0.38;
  background-image:
    linear-gradient(90deg, oklch(18% 0.03 255 / 0.13) 1px, transparent 1px),
    linear-gradient(0deg, oklch(18% 0.03 255 / 0.1) 1px, transparent 1px);
  background-size: 180px 180px;
  transform-origin: 0 0;
}

.constellation {
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 1px;
  transform-origin: 0 0;
  will-change: transform;
}

.tile {
  position: absolute;
  border: 1px solid oklch(17% 0.03 255 / 0.36);
  background: oklch(95% 0.025 86);
  box-shadow: 0 14px 34px oklch(18% 0.035 255 / 0.2);
  overflow: hidden;
  transform-origin: center;
  contain: layout paint size style;
  content-visibility: auto;
  backface-visibility: hidden;
  will-change: transform;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    opacity 180ms ease;
}

.tile:hover,
.tile:focus-visible {
  z-index: 5;
  transform: translate3d(0, -8px, 0) rotate(var(--tilt)) scale(1.035);
  box-shadow: 0 30px 70px oklch(18% 0.035 255 / 0.3);
  outline: 3px solid color-mix(in oklch, var(--accent), white 20%);
}

.tile img,
.atlas-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  pointer-events: none;
}

.image-fallback {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  padding: 18px;
  background:
    linear-gradient(135deg, color-mix(in oklch, var(--accent), white 72%), transparent),
    repeating-linear-gradient(
      45deg,
      oklch(20% 0.025 255 / 0.08) 0 1px,
      transparent 1px 11px
    ),
    oklch(94% 0.024 86);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  line-height: 1.12;
  text-align: center;
  pointer-events: none;
}

.tile.image-failed {
  border-style: solid;
}

.tile::after {
  content: attr(data-style);
  position: absolute;
  left: 9px;
  right: 9px;
  bottom: 9px;
  padding: 7px 9px;
  color: oklch(96% 0.015 90);
  background: oklch(15% 0.03 255 / 0.68);
  backdrop-filter: blur(10px);
  font-size: 0.74rem;
  line-height: 1.2;
  opacity: 0;
  transform: translateY(6px);
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.tile:hover::after,
.tile:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

.tile.real {
  --accent: var(--blue);
}

.tile.solved {
  border-color: color-mix(in oklch, var(--accent), var(--ink) 30%);
}

.tile::before {
  content: "?";
  position: absolute;
  z-index: 1;
  top: 8px;
  right: 8px;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 1px solid oklch(98% 0.02 90 / 0.72);
  border-radius: 50%;
  background: oklch(15% 0.025 255 / 0.62);
  color: oklch(98% 0.02 90);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  line-height: 1;
}

.tile.solved::before {
  content: "";
  border-top: 0;
  border-right: 0;
  border-radius: 0;
  width: 22px;
  height: 12px;
  top: 13px;
  right: 12px;
  background: transparent;
  color: var(--ink);
  transform: rotate(-45deg);
}

.atlas-image {
  background-image: url("./assets/mirror-ai-atlas.png");
  background-size: 400% 400%;
  background-repeat: no-repeat;
}

.detail-panel {
  position: fixed;
  z-index: 22;
  right: clamp(12px, 2vw, 22px);
  bottom: clamp(12px, 2vw, 22px);
  width: min(360px, calc(100vw - 24px));
  padding: 16px;
  transform: translateY(calc(100% + 24px));
  transition: transform 220ms ease;
  max-height: min(78vh, 620px);
  overflow: auto;
}

.detail-panel.open {
  transform: translateY(0);
}

.close-button {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 34px;
  min-height: 34px;
  font-size: 1.2rem;
}

.detail-panel h2 {
  margin: 8px 42px 10px 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  font-weight: 500;
  line-height: 1;
}

.detail-panel p {
  margin: 0;
  color: oklch(30% 0.035 250);
  line-height: 1.45;
}

.guess-box,
.result-box {
  margin-top: 15px;
  border-top: 1px solid oklch(22% 0.03 255 / 0.12);
  padding-top: 12px;
}

.guess-box p,
.result-box p {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.08rem;
  line-height: 1.2;
}

.guess-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
}

.guess-button {
  min-height: 46px;
  border: 1px solid oklch(22% 0.03 255 / 0.22);
  background: oklch(18% 0.025 255);
  color: oklch(97% 0.018 90);
}

.guess-button:hover,
.guess-button:focus-visible {
  background: var(--red);
  outline: none;
}

.result-box .text-button {
  margin-top: 12px;
  min-height: 42px;
}

.detail-panel dl {
  display: grid;
  gap: 9px;
  margin: 16px 0 0;
}

.detail-panel div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 10px;
  border-top: 1px solid oklch(22% 0.03 255 / 0.12);
  padding-top: 9px;
}

.detail-panel dt {
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.detail-panel dd {
  margin: 0;
  min-width: 0;
}

.detail-panel a {
  color: var(--blue);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.tooltip {
  position: fixed;
  z-index: 30;
  max-width: min(330px, calc(100vw - 26px));
  padding: 10px 12px;
  border: 1px solid oklch(22% 0.03 255 / 0.18);
  background: oklch(16% 0.03 255 / 0.9);
  color: oklch(97% 0.018 90);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(12px, 12px);
  transition: opacity 120ms ease;
  contain: layout paint style;
}

.tooltip.visible {
  opacity: 1;
}

.tooltip strong {
  display: block;
  margin-bottom: 4px;
  color: oklch(88% 0.12 82);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.04rem;
  font-weight: 500;
}

.tooltip span {
  display: block;
  color: oklch(85% 0.025 90);
  font-size: 0.82rem;
  line-height: 1.35;
}

.empty-state {
  position: fixed;
  z-index: 2;
  left: 50%;
  top: 50%;
  padding: 12px 14px;
  border: 1px solid oklch(22% 0.03 255 / 0.16);
  background: var(--panel);
  color: var(--muted);
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 160ms ease;
  pointer-events: none;
}

.empty-state.visible {
  opacity: 1;
}

.confetti-layer {
  position: fixed;
  z-index: 50;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.confetti-layer i {
  position: absolute;
  top: 44%;
  width: 9px;
  height: 14px;
  transform: translate3d(-50%, -50%, 0);
  animation: confetti-pop 980ms cubic-bezier(0.2, 0.8, 0.1, 1) forwards;
}

@keyframes confetti-pop {
  0% {
    opacity: 0;
    transform: translate3d(-50%, -50%, 0) rotate(0deg) scale(0.8);
  }

  12% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate3d(var(--dx), var(--dy), 0) rotate(var(--spin)) scale(1);
  }
}

@media (max-width: 760px) {
  body {
    background-size:
      36px 36px,
      36px 36px,
      100% 100%,
      100% 100%;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
  }

  .brand-block {
    padding: 10px 12px;
    width: max-content;
    max-width: calc(100vw - 24px);
  }

  .brand-block h1 {
    font-size: 2.15rem;
  }

  .toolbar {
    align-self: flex-start;
    max-width: calc(100vw - 24px);
    overflow-x: auto;
    padding: 6px;
  }

  .icon-button,
  .text-button,
  .segment,
  .guess-button {
    min-height: 44px;
  }

  .rail {
    right: 12px;
    width: auto;
    padding: 10px;
  }

  .detail-panel {
    right: 12px;
    left: 12px;
    width: auto;
    max-height: 62vh;
    padding-bottom: calc(16px + env(safe-area-inset-bottom));
  }

  .segments {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .readout {
    font-size: 0.76rem;
  }

  .tooltip {
    display: none;
  }
}

@media (hover: none) {
  .tile::after {
    opacity: 1;
    transform: translateY(0);
  }

  .tile:hover {
    transform: rotate(var(--tilt));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}