:root {
  --ps1-ink: #070e17;
  --ps1-face: #12232b;
  --ps1-edge: #386459;
  --ps1-text: #d5eee3;
  --ps1-muted: #86aaa4;
  --ps1-green: #66e7b8;
  --ps1-cyan: #74cddd;
  --ps1-amber: #f2ce8b;
}

.ps1-interface-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
  image-rendering: pixelated;
}

#gameStage > .ps1-interface-canvas { z-index: 2; }
.music-panel, .tutorial-panel, .loader { position: relative; z-index: 1; }

.home-page, .music-overlay, .tutorial-overlay, .loading-layer,
.command-bar, .hud, .ui-toggle-button {
  font-family: "Courier New", Courier, monospace;
  color: var(--ps1-text);
  letter-spacing: 0;
}

.home-page {
  background: #03080e;
  overflow-y: auto;
}

.home-page::before {
  background: repeating-linear-gradient(0deg, transparent 0 3px, #10242c 3px 4px);
  opacity: 0.16;
}

.home-content {
  width: 100%;
  max-width: 1100px;
  min-height: min(700px, 100dvh);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 36px 24px 28px;
}

.home-logo { display: block; margin: 0; }
.home-edition {
  margin: 0 0 16px;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--ps1-amber);
}

.home-title {
  font-size: 54px;
  line-height: 1;
  color: var(--ps1-text);
  font-family: inherit;
  letter-spacing: 0;
  text-shadow: 3px 3px 0 #17443e;
  animation: none;
}

.home-tagline {
  margin: 14px 0 0;
  font-size: 14px;
  letter-spacing: 0;
  color: var(--ps1-muted);
  text-transform: none;
  text-shadow: none;
}

.home-artifact-area {
  width: min(800px, calc(100vw - 24px));
  height: 320px;
  flex: 0 0 auto;
}

.home-buttons { gap: 20px; width: min(480px, 100%); }
.home-buttons button {
  flex: 1;
  min-width: 0;
  min-height: 54px;
  height: auto;
  padding: 12px 16px;
  font-size: 16px;
  letter-spacing: 0;
  color: var(--ps1-text);
  text-shadow: 1px 1px #061d19;
  border-color: var(--ps1-edge);
  border-width: 1px;
  box-shadow: 3px 4px 0 #020609;
}

.home-buttons button#playGameButton { color: var(--ps1-green); border-color: var(--ps1-green); }
.home-session {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 24px 0 0;
  color: var(--ps1-muted);
  font-size: 12px;
  text-transform: uppercase;
}
.session-light { width: 5px; height: 5px; background: var(--ps1-green); }

.command-bar { top: 18px; left: 70px; gap: 8px; }
.command-bar button { padding: 0 12px; min-height: 40px; }
.ui-toggle-button { width: 42px; height: 40px; }
.hud { backdrop-filter: none; border-radius: 0; }
.top-hud { top: 76px; left: 18px; right: auto; width: min(580px, calc(100% - 36px)); gap: 24px; }
.top-hud > div:first-child { flex: 1; }
.top-hud > div:not(:first-child) { flex: 0 0 auto; }
.hud-label { color: var(--ps1-muted); font-size: 10px; letter-spacing: 0; }
.hud strong { max-width: 100%; color: var(--ps1-text); font-size: 14px; }
#hudHp { color: var(--ps1-green); }
#hudScore { color: var(--ps1-amber); font-variant-numeric: tabular-nums; }
.bottom-hud { min-height: 56px; }
.progress-track, #progressFill { height: 5px; border-radius: 0; }
#progressFill { background: var(--ps1-cyan); box-shadow: none; }
.time-readout { font-size: 12px; color: var(--ps1-muted); }

.music-overlay, .tutorial-overlay { background: rgba(1, 5, 9, 0.9); }
.music-panel, .tutorial-panel { border-color: var(--ps1-edge); border-width: 1px; box-shadow: 6px 8px 0 #000; }
.music-panel { grid-template-rows: auto auto auto minmax(230px, 1fr) auto auto; height: min(880px, 100%); }
.panel-header { padding: 18px 20px 14px; border-color: #26433d; }
.panel-header h1 { color: var(--ps1-text); font-size: 22px; letter-spacing: 0; text-shadow: 2px 2px #17443e; }
.eyebrow { color: var(--ps1-amber); font-size: 10px; letter-spacing: 0; text-shadow: none; }
.toolbar { grid-template-columns: repeat(3, minmax(0, 1fr)); padding: 12px 20px; gap: 10px; }
.toolbar button, .upload-button { min-width: 0; font-size: 12px; min-height: 40px; padding: 8px 10px; }
.search-row { padding-bottom: 12px; }
#searchInput { font-size: 14px; color: var(--ps1-text); }
#searchInput::placeholder { color: var(--ps1-muted); }
.selected-record.ps1-mode { min-height: 230px; border-block: 1px solid #244237; }
.ps1-floor-indicator { color: var(--ps1-amber); letter-spacing: 0; }
.ps1-track-info { color: var(--ps1-text); letter-spacing: 0; max-width: 100%; overflow-wrap: anywhere; }
.model-settings { padding-top: 12px; grid-template-columns: repeat(5, minmax(0, 1fr)); border-color: #26433d; }
.model-settings-header { color: var(--ps1-amber); letter-spacing: 0; }
.model-select-row span { color: var(--ps1-muted); font-size: 11px; letter-spacing: 0; }
.model-select-row select { font-size: 12px; color: var(--ps1-text); }
.model-strip { border-color: #26433d; padding: 10px 20px; }
#transformerStatus { color: var(--ps1-muted); font-size: 11px; margin-bottom: 6px; overflow-wrap: anywhere; }
.model-chip { font-size: 10px; color: var(--ps1-muted); border-color: #29453e; }

.tutorial-panel { grid-template-rows: auto auto minmax(180px, 1fr) auto auto; max-height: calc(100dvh - 40px); }
.tutorial-nav { gap: 8px; }
.tutorial-nav-btn, .tutorial-footer button { color: var(--ps1-text); letter-spacing: 0; }
.tutorial-nav-btn.active { color: var(--ps1-amber); }
.tutorial-content { max-height: 170px; scrollbar-color: var(--ps1-edge) var(--ps1-ink); scrollbar-width: thin; }
.tutorial-content h3 { color: var(--ps1-green); font-size: 16px; }
.tutorial-content p, .tutorial-content li { color: var(--ps1-muted); font-size: 13px; }
.tutorial-simulation { min-height: 180px; border-color: #29453e; border-radius: 0; }
.tutorial-simulation canvas { height: min(36dvh, 360px); min-height: 180px; }
.simulation-panel { border: none; background: none; }
.simulation-instructions, .simulation-progress { color: var(--ps1-text); font-size: 12px; letter-spacing: 0; }

.loading-layer { background: rgba(2, 7, 12, 0.94); }
.loader { width: min(520px, calc(100% - 40px)); padding: 28px; border: 1px solid var(--ps1-edge); box-shadow: 5px 7px #000; }
.loader-heading { margin: 0 0 14px; font-size: 18px; color: var(--ps1-text); text-transform: uppercase; }
#loadingText { min-height: 48px; font-size: 12px; line-height: 1.5; letter-spacing: 0; color: var(--ps1-muted); overflow-wrap: anywhere; text-shadow: none; }
.loader-bar { height: 12px; border: 1px solid var(--ps1-edge); }
#loaderFill { background: repeating-linear-gradient(90deg, var(--ps1-green) 0 8px, #09251c 8px 10px); box-shadow: none; }

button:focus-visible, .upload-button:focus-within, select:focus-visible, input:focus-visible {
  outline: 2px solid var(--ps1-amber);
  outline-offset: 3px;
}
.command-bar button, .ui-toggle-button, .toolbar button, .upload-button, #playButton,
.tutorial-nav-btn, .tutorial-footer button, .icon-button {
  font-family: "Courier New", Courier, monospace;
  color: var(--ps1-text);
  letter-spacing: 0;
  border-radius: 0;
  border-color: var(--ps1-edge);
  text-shadow: none;
}

/* Surface geometry follows these controls; native text and focus stay above it. */
[data-ps1-ui-ready] .home-buttons button,
[data-ps1-ui-ready] .home-buttons button:hover,
[data-ps1-ui-ready] .hud,
[data-ps1-ui-ready] .command-bar button,
[data-ps1-ui-ready] .ui-toggle-button,
[data-ps1-ui-ready] #playButton,
[data-ps1-ui-ready] .music-panel,
[data-ps1-ui-ready] .tutorial-panel,
[data-ps1-ui-ready] .toolbar button,
[data-ps1-ui-ready] .upload-button,
[data-ps1-ui-ready] .panel-header button,
[data-ps1-ui-ready] .tutorial-nav button,
[data-ps1-ui-ready] .tutorial-footer button,
[data-ps1-ui-ready] .model-select-row select,
[data-ps1-ui-ready] #searchInput,
[data-ps1-ui-ready] .loader {
  background: transparent;
  background-image: none;
  border-color: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

@media (max-width: 820px) {
  .home-content { min-height: 100dvh; padding: 22px 18px; }
  .home-title { font-size: 36px; }
  .home-artifact-area { height: min(330px, 40dvh); min-height: 180px; }
  .home-edition { margin-bottom: 14px; }
  .home-buttons { gap: 14px; }
  .home-buttons button { min-height: 48px; font-size: 14px; }
  .home-session { margin-top: 20px; }
  .command-bar { top: 10px; left: 62px; right: 10px; gap: 6px; }
  .command-bar button { padding: 0 8px; min-height: 40px; font-size: 11px; }
  .command-bar .icon-button { width: 36px; }
  .ui-toggle-button { top: 10px; left: 10px; }
  .top-hud { top: 104px; left: 10px; width: calc(100% - 20px); gap: 12px; min-height: 50px; }
  .bottom-hud { bottom: 10px; left: 10px; right: 10px; gap: 8px; }
  .bottom-hud #playButton { min-width: 64px; padding: 0 10px; }
  .time-readout { grid-template-columns: 36px minmax(20px, 1fr) 36px; gap: 6px; }
  .music-panel { height: 100%; overflow-y: auto; grid-template-rows: auto auto auto minmax(260px, 1fr) auto auto; }
  .panel-header { padding: 14px 12px 10px; }
  .toolbar { padding-inline: 12px; gap: 6px; }
  .toolbar button, .upload-button { font-size: 11px; }
  .search-row { padding-inline: 12px; }
  .model-settings { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 12px; gap: 10px; }
  .model-select-row:first-of-type { grid-column: 1 / -1; }
  .model-strip { padding: 10px 12px; }
  .model-list { display: none; }
  .tutorial-panel { max-height: calc(100dvh - 20px); overflow-y: auto; }
  .tutorial-content { max-height: 130px; }
  .tutorial-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tutorial-nav-btn { min-height: 40px; font-size: 12px; }
  .tutorial-footer button { min-height: 42px; font-size: 12px; }
  .simulation-panel { left: 6px; right: 6px; bottom: 6px; gap: 4px; }
  .simulation-instructions, .simulation-progress { padding: 6px 8px; min-height: 28px; font-size: 11px; }
}

@media (max-width: 360px) {
  .home-title { font-size: 30px; }
  .command-bar button { padding-inline: 6px; }
}

@media (max-height: 550px) {
  .home-content { min-height: 100dvh; padding-block: 12px; }
  .home-title { font-size: 30px; }
  .home-artifact-area { height: 150px; min-height: 100px; }
  .home-edition { margin-bottom: 8px; }
  .home-tagline { margin-top: 8px; }
  .home-session { margin-top: 12px; }
  .music-panel, .tutorial-panel { overflow-y: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .home-page *, .music-overlay *, .tutorial-overlay * { animation: none; transition: none; }
}