/* AETHER CURRENTS — DOS/Tron theme tokens + layout */

@font-face {
  font-family: "VT323";
  src: url("../assets/fonts/VT323-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --black: #000000;
  --red: #ff2a2a;
  --cyan: #00e5ff;
  --white: #f2f2f2;
  --dim: #5a5a5a;
  --panel-bg: rgba(0, 0, 0, 0.92);
  --font-mono: "VT323", "Courier New", monospace;
  --glow-red: 0 0 8px rgba(255, 42, 42, 0.55);
  --glow-cyan: 0 0 8px rgba(0, 229, 255, 0.55);
  --glow-white: 0 0 8px rgba(242, 242, 242, 0.55);
}

* {
  box-sizing: border-box;
}

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

html {
  font-size: 20px;
}

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-mono);
  overflow: hidden;
}

body.scroll-ok {
  overflow: auto;
}

a {
  color: var(--cyan);
}

a:hover,
a:focus {
  color: var(--red);
}

/* ---------- canvases ---------- */

#gl-canvas,
#hud-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  height: 100dvh;
}

#gl-canvas {
  z-index: 0;
}

#hud-canvas {
  z-index: 1;
  pointer-events: none;
}

#cam {
  visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
}

/* ---------- welcome overlay ---------- */

#welcome {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  padding: 2rem 1rem;
  padding-top: calc(2rem + env(safe-area-inset-top));
  padding-bottom: calc(2rem + env(safe-area-inset-bottom));
  padding-left: calc(1rem + env(safe-area-inset-left));
  padding-right: calc(1rem + env(safe-area-inset-right));
  overflow-y: auto;
  background: var(--black);
}

#welcome::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 11;
  background: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.035) 0px,
    rgba(255, 255, 255, 0.035) 1px,
    transparent 1px,
    transparent 3px
  );
}

.welcome-panel {
  position: relative;
  z-index: 12;
  margin: auto;
  max-width: 640px;
  width: 100%;
  border: 1px solid var(--red);
  padding: 2rem;
  background: var(--panel-bg);
  box-shadow: 0 0 24px rgba(255, 42, 42, 0.25);
}

.title {
  font-size: 2.6rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 0.5rem;
  text-shadow: var(--glow-red);
}

.cursor {
  display: inline-block;
  color: var(--red);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

.tagline {
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
  text-shadow: var(--glow-cyan);
}

h2 {
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--dim);
  padding-bottom: 0.35rem;
  margin: 1.5rem 0 0.75rem;
  text-shadow: var(--glow-cyan);
}

.gesture-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.gesture-table td {
  padding: 0.2rem 0.4rem;
  vertical-align: top;
  color: var(--white);
}

.gesture-table td:first-child {
  color: var(--cyan);
  white-space: nowrap;
  padding-right: 1rem;
}

.legal-links {
  font-size: 0.78rem;
  margin: 0.75rem 0;
}

.legal-links a {
  margin-right: 1rem;
}

.credit {
  font-size: 0.75rem;
  color: var(--dim);
  margin-top: 1.5rem;
}

/* ---------- buttons ---------- */

button,
.btn {
  font-family: var(--font-mono);
  background: transparent;
  border: 1px solid var(--white);
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.6rem 1rem;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.15s ease;
  text-decoration: none;
  display: inline-block;
}

button:hover,
.btn:hover,
button:focus-visible,
.btn:focus-visible {
  background: var(--white);
  color: var(--black);
}

button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

button.recommended {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
}

button.recommended:hover {
  background: var(--cyan);
  color: var(--black);
}

.btn-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

#syscheck-status {
  font-size: 0.9rem;
  color: var(--cyan);
  min-height: 1.2em;
  margin: 0.75rem 0;
  white-space: pre-wrap;
}

#syscheck-details {
  font-size: 0.85rem;
  color: var(--dim);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

#mode-select {
  display: none;
}

/* ---------- error panel ---------- */

.error-panel {
  border: 1px solid var(--red);
  color: var(--red);
  padding: 1rem;
  font-size: 0.8rem;
  margin-top: 1rem;
}

.error-panel .btn {
  margin-top: 0.75rem;
  border-color: var(--red);
  color: var(--red);
}

.error-panel .btn:hover {
  background: var(--red);
  color: var(--black);
}

/* ---------- ui bar ---------- */

#ui-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 5;
  display: none;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  padding-bottom: calc(0.75rem + env(safe-area-inset-bottom));
  padding-left: calc(1rem + env(safe-area-inset-left));
  padding-right: calc(1rem + env(safe-area-inset-right));
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
}

#ui-bar.visible {
  display: flex;
}

#ui-bar .ui-declutter-hidden {
  display: none !important;
}

#hud-status {
  position: fixed;
  top: calc(1rem + env(safe-area-inset-top));
  left: calc(1rem + env(safe-area-inset-left));
  z-index: 5;
  color: var(--cyan);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: pre-wrap;
  max-width: 90vw;
}

/* ---------- legal pages ---------- */

body.legal-page {
  overflow-y: auto;
  padding: 2rem 1rem;
}

.legal-doc {
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--dim);
  padding: 2rem;
  background: var(--panel-bg);
}

.legal-doc h1 {
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 1.4rem;
}

.legal-doc h2 {
  color: var(--cyan);
  font-size: 0.85rem;
}

.legal-doc p,
.legal-doc li {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--white);
}

.legal-doc .back-link {
  display: inline-block;
  margin-top: 2rem;
  font-size: 0.9rem;
}

.legal-doc code {
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  padding: 0.1rem 0.3rem;
}

.legal-doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.75rem 0 1.25rem;
  font-size: 0.95rem;
}

.legal-doc th,
.legal-doc td {
  text-align: left;
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--dim);
  vertical-align: top;
}

.legal-doc th {
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
}

/* ---------- DOS panels (sample menu, export panel) ---------- */

.dos-panel {
  position: fixed;
  z-index: 20;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(480px, 92vw);
  max-height: 80vh;
  overflow-y: auto;
  border: 1px solid var(--red);
  background: var(--panel-bg);
  box-shadow: 0 0 24px rgba(255, 42, 42, 0.25);
  padding: 1.25rem;
}

.dos-panel-title {
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--dim);
  padding-bottom: 0.5rem;
  margin-bottom: 0.75rem;
}

#sample-list {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0;
  font-size: 0.9rem;
}

#sample-list li {
  padding: 0.35rem 0.25rem;
  color: var(--white);
  cursor: pointer;
  border-bottom: 1px dashed rgba(242, 242, 242, 0.15);
}

#sample-list li:hover,
#sample-list li.active {
  background: var(--red);
  color: var(--black);
}

#sample-list li .key-hint {
  color: var(--cyan);
  margin-right: 0.6rem;
}

#sample-list li:hover .key-hint,
#sample-list li.active .key-hint {
  color: var(--black);
}

.dos-panel-note {
  font-size: 0.72rem;
  color: var(--dim);
  line-height: 1.5;
  margin: 0.5rem 0;
}

.declutter-list {
  list-style: none;
  margin: 0.75rem 0;
  padding: 0;
  font-size: 0.85rem;
}

.declutter-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.25rem;
  border-bottom: 1px dashed rgba(242, 242, 242, 0.15);
  cursor: pointer;
}

.declutter-list input[type="checkbox"] {
  accent-color: var(--red);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

#btn-declutter.active {
  border-color: var(--cyan);
  color: var(--cyan);
}

.attribution-notice {
  border: 1px dashed var(--red);
  color: var(--white);
  padding: 0.6rem;
}

.attribution-notice code {
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  padding: 0.1rem 0.3rem;
  display: inline-block;
  margin-top: 0.35rem;
}

#record-export .btn-row {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

#btn-copy-credit.copied {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- perf watchdog toast ---------- */

.toast-panel {
  position: fixed;
  top: calc(1rem + env(safe-area-inset-top));
  right: calc(1rem + env(safe-area-inset-right));
  z-index: 15;
  width: min(340px, 90vw);
  border: 1px solid var(--red);
  background: var(--panel-bg);
  color: var(--red);
  padding: 1rem;
  font-size: 0.8rem;
  line-height: 1.4;
  box-shadow: 0 0 24px rgba(255, 42, 42, 0.25);
}

.toast-panel .btn-row {
  margin-top: 0.75rem;
  gap: 0.5rem;
}

.toast-panel .btn {
  border-color: var(--red);
  color: var(--red);
  font-size: 0.8rem;
  padding: 0.5rem 0.7rem;
}

.toast-panel .btn:hover {
  background: var(--red);
  color: var(--black);
}

.dos-overlay {
  position: fixed;
  inset: 0;
  z-index: 25;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.75);
}

#mic-countdown-num {
  font-size: 8rem;
  color: var(--red);
  text-shadow: 0 0 24px rgba(255, 42, 42, 0.7);
}

#mic-review {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

#mic-review .btn-row {
  justify-content: center;
}

/* ---------- boot / POST screen ---------- */

#boot {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  padding-top: calc(2rem + env(safe-area-inset-top));
  padding-bottom: calc(2rem + env(safe-area-inset-bottom));
  padding-left: calc(1rem + env(safe-area-inset-left));
  padding-right: calc(1rem + env(safe-area-inset-right));
  background: var(--black);
  color: var(--white);
  overflow-y: auto;
  cursor: pointer;
  transition: opacity 0.4s ease;
}

#boot.dissolve {
  opacity: 0;
  pointer-events: none;
}

#boot[hidden] {
  display: none;
}

.boot-inner {
  max-width: 640px;
  width: 100%;
}

.boot-lines {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.5;
  color: var(--white);
  text-shadow: var(--glow-white);
  min-height: 10em;
}

.boot-gdpr {
  margin-top: 1.5rem;
  border-top: 1px dashed var(--dim);
  padding-top: 1.25rem;
  cursor: default;
}

.boot-gdpr-title {
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 1rem;
  margin: 0 0 0.75rem;
  text-shadow: var(--glow-cyan);
}

.boot-gdpr-list {
  margin: 0 0 1.25rem;
  padding-left: 1.2rem;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--white);
}

.boot-gdpr-list code {
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  padding: 0.1rem 0.3rem;
}

.boot-accept {
  border-color: var(--red);
  color: var(--white);
}

.boot-accept:hover,
.boot-accept:focus-visible {
  background: var(--red);
  color: var(--black);
}

/* ---------- ascii bloom glyphs ---------- */

#ascii-glyphs {
  position: absolute;
  inset: 0;
  z-index: 11;
  pointer-events: none;
}

.ascii-glyph {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 2rem;
  opacity: 0;
  transform: translate(-50%, -50%);
  text-shadow: 0 0 12px currentColor, 0 0 24px currentColor;
  transition: opacity 1.5s ease;
}

.ascii-glyph.show {
  opacity: 0.85;
}

/* ---------- mobile ---------- */

@media (max-width: 820px) {
  html {
    font-size: 16px;
  }

  .welcome-panel {
    padding: 1.25rem;
    max-width: 100%;
  }

  .title {
    font-size: 1.9rem;
    letter-spacing: 0.2em;
  }

  .gesture-table {
    font-size: 0.85rem;
  }

  .btn-row {
    gap: 0.6rem;
  }

  button,
  .btn {
    min-height: 44px;
    padding: 0.6rem 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  #mode-select .btn-row {
    flex-direction: column;
  }

  #mode-select .btn-row .btn {
    width: 100%;
  }

  /* ui-bar becomes a wrapping touch-target grid instead of a single row.
     the top-fade gradient only reads correctly for a single-row bar, so
     switch to a solid backdrop here to fully occlude content underneath. */
  #ui-bar.visible {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
    background: rgba(0, 0, 0, 0.92);
  }

  #ui-bar .btn {
    width: 100%;
    min-height: 44px;
  }

  .dos-panel {
    width: min(420px, 94vw);
    max-height: 86vh;
    padding: 1rem;
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
  }

  #mic-countdown-num {
    font-size: 5rem;
  }

  .boot-lines {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .welcome-panel {
    padding: 1rem;
    border-width: 1px;
  }

  .title {
    font-size: 1.4rem;
    letter-spacing: 0.12em;
  }

  .tagline {
    font-size: 0.78rem;
  }

  h2 {
    font-size: 0.8rem;
  }

  .gesture-table {
    font-size: 0.75rem;
  }

  .gesture-table td {
    padding: 0.15rem 0.25rem;
  }

  .legal-links {
    font-size: 0.7rem;
  }

  .credit {
    font-size: 0.68rem;
  }

  #ui-bar.visible {
    grid-template-columns: repeat(2, 1fr);
    padding: 0.6rem 0.75rem;
    padding-bottom: calc(0.6rem + env(safe-area-inset-bottom));
  }

  #ui-bar .btn {
    font-size: 0.82rem;
    padding: 0.5rem 0.5rem;
  }

  .dos-panel {
    width: min(360px, 96vw);
    padding: 0.85rem;
  }

  .dos-panel-title {
    font-size: 0.85rem;
  }

  #sample-list {
    font-size: 0.82rem;
  }

  .attribution-notice code {
    font-size: 0.78rem;
    word-break: break-word;
  }

  #mic-countdown-num {
    font-size: 4rem;
  }

  .boot-lines {
    font-size: 0.9rem;
  }

  .boot-gdpr-list {
    font-size: 0.85rem;
  }
}

/* Honest mobile expectation-setting on the welcome panel — hidden on desktop. */
.mobile-notice {
  display: none;
}

@media (max-width: 820px) {
  .mobile-notice {
    display: block;
    margin: 0.4rem 0 0.8rem;
    color: var(--cyan);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.03em;
    text-shadow: var(--glow-cyan);
    opacity: 0.85;
  }
}