/*
 * ChatJevPT "Y2K" theme: GeoCities circa 1999, on purpose.
 *
 * Everything here is scoped under html[data-ui-theme="y2k"] (set by public/theme.js
 * and the inline <head> script), except the theme switch itself, which both themes
 * show. Switching themes only flips that attribute, so nothing in the chat changes.
 *
 * Deliberately tacky, but the answer text and the controls stay readable
 * (dark text on light panels, or bright text on the starfield).
 */

/* ---- Theme controls (both themes) ---------------------------------------- */

.theme-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: none;
  margin-left: auto;
}

/* The cost meter already pushes everything after it to the right. */
.cost-meter:not([hidden]) ~ .theme-controls {
  margin-left: 0;
}

.theme-switch {
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 11px;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.theme-switch:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.theme-switch .to-modern,
.sound-toggle {
  display: none;
}

html:not([data-ui-theme="y2k"]) .y2k-only,
html:not([data-ui-theme="y2k"]) .y2k-sparkle {
  display: none !important;
}

/* ---- Palette and fonts --------------------------------------------------- */

[data-ui-theme="y2k"] {
  --bg: #000022;
  --surface: #c0c0c0;
  --surface-2: #dfdfdf;
  --border: #808080;
  --border-strong: #000;
  --text: #ffffff;
  --text-dim: #ffff66;
  --text-faint: #ccccff;
  --accent: #ff00ff;
  --accent-soft: rgba(255, 255, 0, 0.55);
  --danger: #cc0000;
  --y2k-comic: "Comic Sans MS", "Comic Neue", "Chalkboard SE", cursive;
  --y2k-wordart: Impact, "Arial Black", "Comic Sans MS", "Comic Neue", sans-serif;
  --y2k-title: linear-gradient(90deg, #000080, #1060c0);
  --y2k-rainbow: linear-gradient(90deg, #ff0000, #ff9900, #ffff00, #33ff00, #00ccff, #6633ff, #ff00ff);
  --serif: var(--y2k-comic);
  --sans: var(--y2k-comic);
  --mono: "Courier New", Courier, monospace;
  --radius: 0;
  color-scheme: light;
}

/* Light "Windows 98" panels: dark text on gray, wherever they appear. */
[data-ui-theme="y2k"] .composer,
[data-ui-theme="y2k"] .tooltip,
[data-ui-theme="y2k"] .sidebar,
[data-ui-theme="y2k"] .menu,
[data-ui-theme="y2k"] .account-menu,
[data-ui-theme="y2k"] .signin-card {
  --text: #000;
  --text-dim: #000;
  --text-faint: #333;
  --surface: #d4d0c8;
  --surface-2: #ffffff;
  --border: #808080;
  --accent-soft: #ffff00;
  color: #000;
}

[data-ui-theme="y2k"] ::selection {
  background: #ff00ff;
  color: #fff;
}

/* A tiled starfield, twinkling slowly. */
[data-ui-theme="y2k"] body {
  overflow-x: clip;
  background-color: #000022;
  background-image:
    radial-gradient(1.5px 1.5px at 23px 31px, #fff 50%, transparent),
    radial-gradient(1px 1px at 71px 92px, #ffff99 50%, transparent),
    radial-gradient(2px 2px at 118px 44px, #fff 50%, transparent),
    radial-gradient(1px 1px at 160px 150px, #99ffff 50%, transparent),
    radial-gradient(1.5px 1.5px at 40px 170px, #ffccff 50%, transparent),
    radial-gradient(1px 1px at 190px 20px, #fff 50%, transparent),
    radial-gradient(1px 1px at 97px 197px, #fff 50%, transparent),
    radial-gradient(2.5px 2.5px at 150px 260px, #fff 50%, transparent),
    radial-gradient(1px 1px at 260px 80px, #ffff99 50%, transparent),
    radial-gradient(1.5px 1.5px at 290px 220px, #99ffff 50%, transparent);
  background-size: 210px 210px, 210px 210px, 210px 210px, 210px 210px, 210px 210px, 210px 210px, 210px 210px,
    330px 330px, 330px 330px, 330px 330px;
  animation: y2k-stars 90s linear infinite;
}

/* ---- Top bar: a Windows 98 title bar with WordArt ------------------------ */

[data-ui-theme="y2k"] .topbar {
  background: var(--y2k-title);
  border-bottom: 3px ridge #c0c0c0;
  padding: 8px 12px;
  gap: 10px;
}

[data-ui-theme="y2k"] .topbar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -9px;
  height: 6px;
  background: var(--y2k-rainbow);
  pointer-events: none;
}

[data-ui-theme="y2k"] .brand {
  position: relative;
  padding: 2px 6px;
  border-radius: 0;
}

[data-ui-theme="y2k"] .brand:hover {
  background: rgba(255, 255, 255, 0.15);
}

[data-ui-theme="y2k"] .brand span {
  font-family: var(--y2k-wordart);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(180deg, #ffff00 10%, #ff9900 45%, #ff00cc 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-stroke: 0.6px #400040;
  filter: drop-shadow(2px 2px 0 #000);
  display: inline-block;
  transform: skew(-10deg) rotate(-3deg);
}

[data-ui-theme="y2k"] .brand .spark,
[data-ui-theme="y2k"] .hero-spark {
  fill: #ffff00;
  filter: drop-shadow(0 0 3px #ff00ff);
  animation: y2k-spin 4s linear infinite;
}

/* Blinking NEW! badges. */
[data-ui-theme="y2k"] .brand::after,
[data-ui-theme="y2k"] .suggestions button:first-child::after {
  content: "NEW!";
  position: absolute;
  top: -4px;
  right: -26px;
  padding: 0 4px;
  background: #cc0000;
  color: #ffff00;
  border: 1px solid #ffff00;
  font: bold 10px/14px Verdana, var(--y2k-comic);
  transform: rotate(14deg);
  animation: y2k-blink 0.8s steps(1) infinite;
  pointer-events: none;
}

[data-ui-theme="y2k"] .model-pill {
  margin-left: 22px;
  background: #ffff00;
  color: #000;
  border: 2px dashed #ff00ff;
  border-radius: 0;
  font-weight: 700;
  transform: rotate(4deg);
  box-shadow: 3px 3px 0 #000;
}

/* A Winamp-style LCD. */
[data-ui-theme="y2k"] .cost-meter {
  background: #000;
  color: #00ff00;
  font: bold 12.5px/1.5 var(--mono);
  border: 2px inset #808080;
  padding: 2px 8px;
  text-shadow: 0 0 4px #00ff00;
}

[data-ui-theme="y2k"] .cost-meter b {
  color: #ffff00;
  font-weight: 700;
}

/* Beveled 3D buttons. */
[data-ui-theme="y2k"] .icon-btn,
[data-ui-theme="y2k"] .sound-toggle,
[data-ui-theme="y2k"] .meta .act,
[data-ui-theme="y2k"] .send,
[data-ui-theme="y2k"] .btn,
[data-ui-theme="y2k"] .sidebar-new,
[data-ui-theme="y2k"] .signin-card button,
[data-ui-theme="y2k"] .admin-page button {
  background: #c0c0c0;
  color: #000;
  border: 3px outset #f0f0f0;
  border-radius: 0;
}

[data-ui-theme="y2k"] .icon-btn:hover,
[data-ui-theme="y2k"] .sound-toggle:hover,
[data-ui-theme="y2k"] .meta .act:hover,
[data-ui-theme="y2k"] .send:hover:not(:disabled),
[data-ui-theme="y2k"] .btn:hover,
[data-ui-theme="y2k"] .sidebar-new:hover {
  background: #e0e0e0;
  color: #000;
}

[data-ui-theme="y2k"] .icon-btn:active,
[data-ui-theme="y2k"] .sound-toggle:active,
[data-ui-theme="y2k"] .theme-switch:active,
[data-ui-theme="y2k"] .meta .act:active,
[data-ui-theme="y2k"] .send:active:not(:disabled),
[data-ui-theme="y2k"] .suggestions button:active,
[data-ui-theme="y2k"] .btn:active,
[data-ui-theme="y2k"] .sidebar-new:active {
  border-style: inset;
  transform: none;
}

[data-ui-theme="y2k"] .icon-btn {
  width: 32px;
  height: 32px;
}

[data-ui-theme="y2k"] .icon-btn svg {
  stroke-width: 3;
}

[data-ui-theme="y2k"] .sound-toggle {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  font-size: 15px;
  line-height: 1;
  padding: 0;
}

.sound-toggle[aria-pressed="false"] .sound-on,
.sound-toggle[aria-pressed="true"] .sound-off {
  display: none;
}

[data-ui-theme="y2k"] .theme-switch {
  background: #ff66cc;
  color: #000;
  border: 3px outset #ffc2ea;
  border-radius: 0;
  font: bold 14px/1.3 var(--y2k-comic);
  padding: 3px 9px;
  transform: rotate(-3deg);
  box-shadow: 2px 2px 0 #000;
}

[data-ui-theme="y2k"] .theme-switch:hover {
  background: #ff99dd;
  color: #000;
  border-color: #ffc2ea;
}

[data-ui-theme="y2k"] .theme-switch .to-y2k {
  display: none;
}

[data-ui-theme="y2k"] .theme-switch .to-modern {
  display: inline;
}

/* ---- Marquee banner (theme-only markup from theme.js) -------------------- */

[data-ui-theme="y2k"] .y2k-marquee {
  flex: none;
  overflow: hidden;
  margin-top: 6px;
  padding: 3px 0;
  background: #000;
  border-top: 2px solid #ff00ff;
  border-bottom: 2px solid #00ffff;
  color: #00ff00;
  font: bold 14px/1.4 var(--mono);
  white-space: nowrap;
}

.y2k-marquee-track {
  display: inline-flex;
  animation: y2k-marquee 24s linear infinite;
}

.y2k-marquee-track span {
  padding-right: 1.5em;
}

/* ---- Empty state --------------------------------------------------------- */

[data-ui-theme="y2k"] .hero {
  flex-wrap: wrap;
  text-align: center;
  margin-top: 16px;
}

[data-ui-theme="y2k"] .hero h1 {
  font-family: var(--y2k-wordart);
  font-weight: 700;
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1.15;
  letter-spacing: 0.5px;
  background: linear-gradient(180deg, #00ffff 0%, #3366ff 35%, #ff00ff 65%, #ffff00 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-stroke: 1px #fff;
  filter: drop-shadow(3px 3px 0 #cc0066);
  transform: rotate(-3deg) skew(-6deg);
}

[data-ui-theme="y2k"] .hero::after {
  content: "🚧 UNDER CONSTRUCTION 🚧";
  flex-basis: 100%;
  max-width: max-content;
  margin: 18px auto 0;
  padding: 4px 12px;
  background: #ffcc00;
  color: #000;
  font: bold 14px/1.4 var(--y2k-comic);
  border: 6px solid;
  border-image: repeating-linear-gradient(45deg, #000 0 8px, #ffcc00 8px 16px) 6;
  transform: rotate(2deg);
}

[data-ui-theme="y2k"] .suggestions {
  gap: 12px 10px;
}

[data-ui-theme="y2k"] .suggestions button {
  position: relative;
  color: #000;
  border: 3px outset #f0f0f0;
  border-radius: 0;
  font-weight: 700;
  font-size: 14px;
  padding: 5px 12px;
  box-shadow: 3px 3px 0 #000;
}

[data-ui-theme="y2k"] .suggestions button:nth-child(4n + 1) {
  background: #ffff66;
  transform: rotate(-3deg);
}

[data-ui-theme="y2k"] .suggestions button:nth-child(4n + 2) {
  background: #66ffff;
  transform: rotate(2deg) translateY(3px);
}

[data-ui-theme="y2k"] .suggestions button:nth-child(4n + 3) {
  background: #ff99ff;
  transform: rotate(-1deg);
  font-family: "Times New Roman", serif;
}

[data-ui-theme="y2k"] .suggestions button:nth-child(4n) {
  background: #99ff66;
  transform: rotate(3deg) translateY(-2px);
}

[data-ui-theme="y2k"] .suggestions button:hover {
  background: #fff;
  color: #000;
  border-color: #f0f0f0;
}

[data-ui-theme="y2k"] .suggestions button:first-child::after {
  top: -10px;
  right: -12px;
}

/* ---- Thread: an AOL Instant Message window ------------------------------- */

/* One window holds the whole conversation: a title bar, then a plain white
   transcript of "ScreenName: message" lines, like AIM circa 1999. */
[data-ui-theme="y2k"] .thread {
  --text: #000;
  --text-dim: #000;
  --text-faint: #444;
  --surface: #d4d0c8;
  --surface-2: #ffffff;
  --border: #808080;
  --accent-soft: #ffff00;
  gap: 6px;
  margin: 16px 0 12px;
  padding: 0 12px 12px;
  background: #fff;
  color: #000;
  border: 3px solid #c0c0c0;
  border-top: 0;
  box-shadow: inset 2px 2px #808080, 0 0 0 1px #000, 5px 5px 0 rgba(0, 0, 0, 0.6);
  font-family: Arial, Helvetica, var(--y2k-comic);
}

[data-ui-theme="y2k"] .thread::before {
  content: "✉ Instant Message With JevBot2000";
  margin: 0 -12px 6px;
  padding: 3px 8px;
  background: var(--y2k-title);
  color: #fff;
  font: bold 13px/20px Tahoma, Verdana, sans-serif;
  border-bottom: 3px solid #c0c0c0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Every line: a bold screen name, then the message. No bubbles. */
[data-ui-theme="y2k"] .msg-user,
[data-ui-theme="y2k"] .answer {
  font: 16px/1.5 Arial, Helvetica, var(--y2k-comic);
  color: #000;
}

[data-ui-theme="y2k"] .msg-user {
  align-self: stretch;
  max-width: none;
  margin-top: 8px;
  padding: 0;
  background: none;
  border-radius: 0;
  animation: none;
}

[data-ui-theme="y2k"] .msg-user::before {
  content: "xX_y0u_Xx: ";
  color: #cc0000;
  font-weight: 700;
}

[data-ui-theme="y2k"] .msg-jev {
  display: block;
  animation: none;
}

[data-ui-theme="y2k"] .msg-jev .avatar {
  display: none;
}

[data-ui-theme="y2k"] .answer {
  min-height: 0;
}

[data-ui-theme="y2k"] .answer::before {
  content: "JevBot2000: ";
  color: #0000cc;
  font-weight: 700;
}

[data-ui-theme="y2k"] .answer .ch {
  border-radius: 0;
}

[data-ui-theme="y2k"] .answer .ch:hover,
[data-ui-theme="y2k"] .answer .ch.active {
  background: #ffff00;
  outline: 1px dotted #0000cc;
}

[data-ui-theme="y2k"] .answer .ch.tied {
  text-decoration-color: #0000cc;
}

[data-ui-theme="y2k"] .thinking {
  color: #555;
  font-size: 14px;
  font-style: italic;
}

[data-ui-theme="y2k"] .caret {
  width: 8px;
  border-radius: 0;
  background: #000;
}

/* The answer row: small gray details under Jev's line, beveled buttons. */
[data-ui-theme="y2k"] .meta {
  margin-top: 2px;
  color: #444;
  font: 12px Arial, Helvetica, sans-serif;
  gap: 4px 10px;
}

[data-ui-theme="y2k"] .meta .bar {
  width: 80px;
  height: 12px;
  border-radius: 0;
  background: #fff;
  border: 2px inset #f0f0f0;
}

[data-ui-theme="y2k"] .meta .bar i {
  top: 1px;
  bottom: 1px;
  left: 1px;
  border-radius: 0;
  background: repeating-linear-gradient(90deg, #000080 0 6px, transparent 6px 8px);
}

[data-ui-theme="y2k"] .meta .act {
  margin: 0;
  padding: 0 6px;
  font: 12px Tahoma, Verdana, sans-serif;
}

[data-ui-theme="y2k"] .meta .act svg {
  stroke-width: 2.4;
}

[data-ui-theme="y2k"] .meta .stop-answer {
  color: #cc0000;
}

/* Rating chips: little stickers. */
[data-ui-theme="y2k"] .rating {
  border: 1px solid #000;
  border-radius: 0;
  color: #000;
  font: bold 12px/16px var(--y2k-comic);
  padding: 0 6px;
  box-shadow: 1px 1px 0 #000;
}

[data-ui-theme="y2k"] .rating.pending {
  background: #fff;
  border-style: dashed;
}

[data-ui-theme="y2k"] .rating-terrible {
  background: #ff6666;
}

[data-ui-theme="y2k"] .rating-terrible::before {
  content: "☠\00a0";
}

[data-ui-theme="y2k"] .rating-bad {
  background: #ffaa33;
}

[data-ui-theme="y2k"] .rating-solid {
  background: #ffffff;
}

[data-ui-theme="y2k"] .rating-good {
  background: #66ff66;
}

[data-ui-theme="y2k"] .rating-good::before {
  content: "☺\00a0";
}

[data-ui-theme="y2k"] .rating-perfect {
  background: linear-gradient(90deg, #ff9999, #ffcc66, #ffff66, #99ff99, #66ccff, #cc99ff, #ff9999);
  background-size: 200% 100%;
  animation: y2k-slide 2s linear infinite;
}

[data-ui-theme="y2k"] .rating-perfect::before,
[data-ui-theme="y2k"] .rating-perfect::after {
  content: "★";
  color: #cc0066;
  padding: 0 2px;
}

/* Notices and errors. */
[data-ui-theme="y2k"] .notice {
  background: #ffff99;
  color: #000;
  border: 3px double #cc0000;
  border-radius: 0;
  box-shadow: 2px 2px 0 #000;
}

[data-ui-theme="y2k"] .notice svg {
  color: #cc0000;
  stroke-width: 2.6;
}

[data-ui-theme="y2k"] .notice strong {
  color: #cc0000;
  font-size: 16px;
}

[data-ui-theme="y2k"] .notice p {
  color: #000;
}

[data-ui-theme="y2k"] .notice.spicy {
  background: linear-gradient(180deg, #ffee00, #ff9900 65%, #ff6600);
  border: 4px ridge #ff0000;
  transform: rotate(-1deg);
  animation: y2k-shake 0.35s 4;
}

[data-ui-theme="y2k"] .notice.spicy strong,
[data-ui-theme="y2k"] .notice.spicy svg {
  color: #000;
}

[data-ui-theme="y2k"] .notice.spicy::after {
  content: "🌶️🔥";
  margin-left: auto;
  align-self: center;
  font-size: 24px;
  line-height: 1;
}

[data-ui-theme="y2k"] .error {
  background: #fff;
  color: #cc0000;
  border: 2px solid #cc0000;
  padding: 6px 10px;
  font-weight: 700;
  box-shadow: 3px 3px 0 #000;
}

[data-ui-theme="y2k"] .error::before {
  content: "⛔ ERROR!! ";
}

/* ---- Composer: an Outlook Express window --------------------------------- */

[data-ui-theme="y2k"] .composer-wrap {
  background: linear-gradient(transparent, #000022 22%);
}

[data-ui-theme="y2k"] .composer {
  background: #c0c0c0;
  border: 3px outset #f0f0f0;
  border-radius: 0;
  padding: 0 0 8px;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.7);
}

[data-ui-theme="y2k"] .composer:focus-within {
  border-color: #f0f0f0;
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.7), 0 0 0 3px #ff00ff;
}

[data-ui-theme="y2k"] .composer::before {
  content: "✉ New Message - Jev Express";
  display: block;
  margin: 2px 2px 8px;
  padding: 0 8px;
  background: var(--y2k-title);
  color: #fff;
  font: bold 13px/24px Tahoma, Verdana, var(--y2k-comic);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

[data-ui-theme="y2k"] .composer textarea {
  display: block;
  width: calc(100% - 16px);
  margin: 0 8px;
  padding: 6px 8px;
  background: #fff;
  color: #000;
  font-size: 16px;
  box-shadow: inset 2px 2px #808080, inset -2px -2px #fff, inset 3px 3px #404040;
}

[data-ui-theme="y2k"] .composer textarea::placeholder {
  color: #555;
}

[data-ui-theme="y2k"] .composer-row {
  padding: 0 8px;
}

[data-ui-theme="y2k"] .hint {
  color: #000;
  font-family: var(--mono);
}

[data-ui-theme="y2k"] .send {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: auto;
  height: 34px;
  padding: 0 14px;
  font: bold 15px/1 var(--y2k-comic);
}

[data-ui-theme="y2k"] .send::after {
  content: "Send!";
}

[data-ui-theme="y2k"] .send.stop {
  background: #ff9999;
}

[data-ui-theme="y2k"] .send.stop::after {
  content: "STOP!!";
}

[data-ui-theme="y2k"] .send:disabled {
  opacity: 1;
  color: #808080;
  text-shadow: 1px 1px 0 #fff;
}

[data-ui-theme="y2k"] .disclaimer {
  color: #ffff66;
  font: italic 13px/1.4 "Times New Roman", Times, serif;
  text-shadow: 1px 1px 0 #000;
}

/* ---- Probability tooltip: a Windows tooltip ------------------------------ */

[data-ui-theme="y2k"] .tooltip {
  background: #ffffe1;
  border: 1px solid #000;
  border-radius: 0;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.6);
}

[data-ui-theme="y2k"] .tooltip h4 {
  color: #000;
  font-weight: 700;
}

[data-ui-theme="y2k"] .tooltip .screen-note {
  color: #333;
}

[data-ui-theme="y2k"] .tooltip .row.picked {
  color: #0000cc;
  font-weight: 700;
}

[data-ui-theme="y2k"] .tooltip .row span:last-child {
  color: #000;
}

[data-ui-theme="y2k"] .tooltip .track {
  border-radius: 0;
  height: 8px;
  background: #fff;
  border: 1px solid #808080;
}

[data-ui-theme="y2k"] .tooltip .row:not(.picked) .track i {
  background: #808080;
}

/* ---- Footer (theme-only markup from theme.js) ---------------------------- */

[data-ui-theme="y2k"] .y2k-footer {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 12px 16px 28px;
  text-align: center;
  color: #fff;
  font-size: 13px;
}

.y2k-footer p {
  margin: 10px 0;
}

.y2k-hr {
  height: 6px;
  margin: 0 0 16px;
  border: 0;
  background: var(--y2k-rainbow);
  transform: rotate(0.7deg);
}

.y2k-construction {
  display: inline-block;
  padding: 4px 12px;
  background: #ffcc00;
  color: #000;
  font-weight: 700;
  border: 6px solid;
  border-image: repeating-linear-gradient(45deg, #000 0 8px, #ffcc00 8px 16px) 6;
  transform: rotate(-2deg);
}

.y2k-counter-row {
  color: #00ffff;
  font-weight: 700;
}

.y2k-counter {
  display: inline-flex;
  gap: 1px;
  margin-left: 6px;
  vertical-align: middle;
  padding: 2px;
  background: #333;
  border: 2px inset #808080;
}

.y2k-counter b {
  padding: 0 3px;
  background: #000;
  color: #ff3333;
  font: bold 16px/1.2 var(--mono);
}

.y2k-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
}

.y2k-badges span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 88px;
  height: 31px;
  border: 2px outset #ddd;
  font: bold 9px/1.1 Verdana, Arial, sans-serif;
  text-align: center;
}

.y2k-badges .b-netscape {
  background: linear-gradient(#000080, #0000cc);
  color: #ffff00;
}

.y2k-badges .b-800 {
  background: #c0c0c0;
  color: #000;
  transform: rotate(-4deg);
}

.y2k-badges .b-y2k {
  background: #000;
  color: #00ff00;
}

.y2k-badges .b-notepad {
  background: #ffffff;
  color: #cc0000;
  transform: rotate(3deg);
}

.y2k-webring {
  color: #00ffff;
  font-weight: 700;
}

.y2k-updated {
  color: #c0c0c0;
  font-size: 11px;
}

/* ---- Sparkle cursor trail (created by theme.js) -------------------------- */

.y2k-sparkle {
  position: fixed;
  z-index: 50;
  pointer-events: none;
  font: 16px/1 sans-serif;
  text-shadow: 0 0 6px currentColor;
  transform: translate(-50%, -50%);
  animation: y2k-sparkle 0.9s ease-out forwards;
}

/* ---- Soon-to-exist account UI: sidebar, avatar menu, sign-in, admin ------ */

[data-ui-theme="y2k"] .sidebar {
  background: #c0c0c0;
  border-right: 4px ridge #f0f0f0;
}

[data-ui-theme="y2k"] .sidebar-head {
  background: var(--y2k-title);
  color: #fff;
}

[data-ui-theme="y2k"] .sidebar-head .sidebar-title {
  font-family: var(--y2k-wordart);
  color: #fff;
}

[data-ui-theme="y2k"] .chat-list li,
[data-ui-theme="y2k"] .chat-list a,
[data-ui-theme="y2k"] .chat-list button {
  border-radius: 0;
  color: #0000ee;
}

[data-ui-theme="y2k"] .chat-list a,
[data-ui-theme="y2k"] .chat-list li > :first-child {
  text-decoration: underline;
}

[data-ui-theme="y2k"] .chat-list li:hover,
[data-ui-theme="y2k"] .chat-list .active,
[data-ui-theme="y2k"] .chat-list [aria-current] {
  background: #000080;
  color: #fff;
}

[data-ui-theme="y2k"] .chat-list li:hover *,
[data-ui-theme="y2k"] .chat-list .active *,
[data-ui-theme="y2k"] .chat-list [aria-current] * {
  color: #fff;
}

[data-ui-theme="y2k"] .avatar:not(svg),
[data-ui-theme="y2k"] .account-avatar {
  border-radius: 0;
  background: #ffff00;
  color: #000;
  border: 3px ridge #ff00ff;
  font-weight: 700;
  transform: rotate(-6deg);
}

[data-ui-theme="y2k"] .menu,
[data-ui-theme="y2k"] .account-menu {
  background: #c0c0c0;
  border: 3px outset #f0f0f0;
  border-radius: 0;
  box-shadow: 4px 4px 0 #000;
}

[data-ui-theme="y2k"] .menu a,
[data-ui-theme="y2k"] .menu button,
[data-ui-theme="y2k"] .account-menu-item {
  border-radius: 0;
  color: #000;
}

[data-ui-theme="y2k"] .menu a:hover,
[data-ui-theme="y2k"] .menu button:hover,
[data-ui-theme="y2k"] .account-menu-item:hover {
  background: #000080;
  color: #fff;
}

[data-ui-theme="y2k"] .signin-card {
  position: relative;
  background: #c0c0c0;
  border: 3px outset #f0f0f0;
  border-radius: 0;
  padding-top: 40px;
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.7);
  transform: rotate(-1deg);
}

[data-ui-theme="y2k"] .signin-card::before {
  content: "Welcome to ChatJevPT - Log On";
  position: absolute;
  top: 2px;
  left: 2px;
  right: 2px;
  padding: 0 8px;
  background: var(--y2k-title);
  color: #fff;
  font: bold 13px/24px Tahoma, Verdana, var(--y2k-comic);
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

[data-ui-theme="y2k"] table {
  border: 3px outset #f0f0f0;
  border-collapse: separate;
  border-spacing: 2px;
  background: #c0c0c0;
  color: #000;
}

[data-ui-theme="y2k"] th {
  background: var(--y2k-title);
  color: #fff;
}

[data-ui-theme="y2k"] td {
  background: #fff;
  color: #000;
  border: 1px inset #808080;
}

[data-ui-theme="y2k"] tr:nth-child(even) td {
  background: #ffffcc;
}

[data-ui-theme="y2k"] input:not([type="checkbox"]):not([type="radio"]),
[data-ui-theme="y2k"] select {
  background: #fff;
  color: #000;
  border: 2px inset #f0f0f0;
  border-radius: 0;
}

/* ---- Small screens ------------------------------------------------------- */

@media (max-width: 560px) {
  [data-ui-theme="y2k"] .topbar {
    gap: 6px;
    padding: 6px 8px;
  }
  [data-ui-theme="y2k"] .brand span {
    font-size: 21px;
  }
  [data-ui-theme="y2k"] .brand::after {
    right: -14px;
    top: -6px;
  }
  [data-ui-theme="y2k"] .theme-switch {
    font-size: 13px;
    padding: 2px 6px;
  }
  [data-ui-theme="y2k"] .thread {
    padding: 0 8px 10px;
    box-shadow: inset 2px 2px #808080, 0 0 0 1px #000, 3px 3px 0 rgba(0, 0, 0, 0.6);
  }
  [data-ui-theme="y2k"] .thread::before {
    margin: 0 -8px 4px;
  }
  [data-ui-theme="y2k"] .msg-user,
  [data-ui-theme="y2k"] .answer {
    font-size: 15px;
  }
  [data-ui-theme="y2k"] .composer {
    box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.7);
  }
  /* Keep the empty state short enough that the sticky composer doesn't cover it. */
  [data-ui-theme="y2k"] .hero {
    gap: 8px;
    margin-bottom: 18px;
  }
  [data-ui-theme="y2k"] .hero-spark {
    width: 26px;
    height: 26px;
  }
  [data-ui-theme="y2k"] .hero h1 {
    font-size: 28px;
  }
  [data-ui-theme="y2k"] .hero::after {
    display: none;
  }
  [data-ui-theme="y2k"] .suggestions {
    gap: 10px 8px;
  }
  [data-ui-theme="y2k"] .suggestions button {
    font-size: 13px;
    padding: 3px 9px;
  }
}

@media (max-width: 400px) {
  [data-ui-theme="y2k"] .brand .spark {
    display: none;
  }
}

/* ---- Motion -------------------------------------------------------------- */

@keyframes y2k-stars {
  to {
    background-position: 210px 420px, 210px 420px, 210px 420px, 210px 420px, 210px 420px, 210px 420px, 210px 420px,
      -330px 330px, -330px 330px, -330px 330px;
  }
}

@keyframes y2k-marquee {
  to {
    transform: translateX(-50%);
  }
}

@keyframes y2k-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes y2k-blink {
  50% {
    visibility: hidden;
  }
}

@keyframes y2k-slide {
  to {
    background-position: 200% 0;
  }
}

@keyframes y2k-shake {
  25% {
    transform: rotate(-1deg) translateX(-3px);
  }
  75% {
    transform: rotate(-1deg) translateX(3px);
  }
}

@keyframes y2k-sparkle {
  to {
    opacity: 0;
    transform: translate(-50%, 18px) scale(0.3) rotate(180deg);
  }
}

/* styles.css already switches every animation off; also keep the marquee readable. */
@media (prefers-reduced-motion: reduce) {
  [data-ui-theme="y2k"] .y2k-marquee {
    white-space: normal;
    text-align: center;
  }
  [data-ui-theme="y2k"] .y2k-marquee-track {
    display: block;
    animation: none;
  }
  [data-ui-theme="y2k"] .y2k-marquee-track span + span {
    display: none;
  }
}

/* Model level picker and memory toggle: beveled Win98 buttons. */
[data-ui-theme="y2k"] .levels {
  border: 2px inset #f0f0f0;
  border-radius: 0;
  background: #c0c0c0;
}

[data-ui-theme="y2k"] .level-option,
[data-ui-theme="y2k"] .memory-toggle {
  border-radius: 0;
  font-family: "Comic Sans MS", "Comic Neue", "Chalkboard SE", cursive;
  color: #000;
}

[data-ui-theme="y2k"] .level-option[aria-checked="true"] {
  background: #000080;
  color: #ffff00;
}

[data-ui-theme="y2k"] .level-option:disabled {
  color: #6b6b6b;
}

[data-ui-theme="y2k"] .memory-toggle {
  background: #c0c0c0;
  border: 2px outset #f0f0f0;
}

[data-ui-theme="y2k"] .memory-toggle[aria-pressed="true"] {
  border-style: inset;
  background: #00ff66;
}

[data-ui-theme="y2k"] .level-tag {
  border-radius: 0;
  background: #ffff00;
  color: #000;
  border: 1px solid #000;
}

/* Lab: a Notepad window. */
[data-ui-theme="y2k"] .lab {
  background: #c0c0c0;
  border: 3px outset #f0f0f0;
  border-radius: 0;
  color: #000;
}

[data-ui-theme="y2k"] .lab-levels {
  border: 2px inset #f0f0f0;
  border-radius: 0;
}

[data-ui-theme="y2k"] .lab-level {
  border-radius: 0;
  color: #000;
  font-family: "Comic Sans MS", "Comic Neue", "Chalkboard SE", cursive;
}

[data-ui-theme="y2k"] .lab-level[aria-selected="true"] {
  background: #000080;
  color: #fff;
}

[data-ui-theme="y2k"] .lab-help,
[data-ui-theme="y2k"] .lab-badge,
[data-ui-theme="y2k"] .lab-status {
  color: #000;
}

[data-ui-theme="y2k"] .lab textarea {
  background: #fff;
  color: #000;
  border: 2px inset #f0f0f0;
  border-radius: 0;
  font-family: "Courier New", monospace;
}

[data-ui-theme="y2k"] .lab-toggle {
  border-radius: 0;
  background: #c0c0c0;
  border: 2px outset #f0f0f0;
  color: #000;
  font-family: "Comic Sans MS", "Comic Neue", "Chalkboard SE", cursive;
}

[data-ui-theme="y2k"] .lab-toggle.edited {
  background: #ff66cc;
}

/* Non-admin preview banner: a caution tape. */
[data-ui-theme="y2k"] .preview-banner {
  background: repeating-linear-gradient(-45deg, #ffff00 0 14px, #000 14px 28px);
  border-bottom: 3px ridge #ff00ff;
}

[data-ui-theme="y2k"] .preview-banner span {
  background: #ffff00;
  color: #000;
  padding: 1px 6px;
  font-family: "Comic Sans MS", "Comic Neue", "Chalkboard SE", cursive;
  font-weight: 700;
}

[data-ui-theme="y2k"] .preview-banner button {
  border-radius: 0;
  background: #c0c0c0;
  border: 2px outset #f0f0f0;
  color: #000;
}

[data-ui-theme="y2k"] .lab-request pre {
  background: #000;
  color: #00ff66;
  border: 2px inset #f0f0f0;
  border-radius: 0;
  font-family: "Courier New", monospace;
}

[data-ui-theme="y2k"] .lab-request p {
  color: #000;
}

[data-ui-theme="y2k"] .stopped-tag {
  border-radius: 0;
  background: #ff0000;
  color: #fff;
  border: 1px solid #000;
  font-weight: 700;
}