/*
 * SPDX-License-Identifier: Apache-2.0
 * Copyright 2026 Google LLC
 */

:root {
  color-scheme: dark light;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: system-ui, sans-serif;
  font-size: 14px;
  max-width: 1028px;
  margin: 2rem auto;
  padding: 0 1rem;
  color: light-dark(#111, #eee);
}
h1 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}
p.subtitle {
  color: light-dark(#555, #aaa);
  margin-bottom: 1.25rem;
  max-width: 70ch;
}
/* A prerequisite, not prose: set apart from the description above it so it
   does not read as one more sentence about the demo. */
p.requirement {
  max-width: 70ch;
  margin-bottom: 1.25rem;
  padding: 0.5rem 0.7rem;
  border-left: 3px solid light-dark(#8a6d00, #d9b64a);
  background: light-dark(#fffaf0, #241f14);
}
p.requirement code {
  font-family: ui-monospace, monospace;
  font-size: 12px;
  background: light-dark(#f4ecd8, #332c1a);
  padding: 0.1em 0.35em;
}

/* Status line */
#status {
  /* Deliberately not a box: bordered and filled, stretched across the row
     next to a button, it read as a text field the user could type into. */
  color: light-dark(#555, #aaa);
  padding: 0.4rem 0;
  margin-bottom: 0.75rem;
}

/* Download progress */
#dl-progress {
  width: 100%;
  display: none;
  margin-bottom: 0.75rem;
}

/* Example prompts */
#examples {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}
button.example {
  font: inherit;
  color: inherit;
  text-align: left;
  padding: 0.35rem 0.6rem;
  background: light-dark(#fff, #1b1b1b);
  border: 1px solid light-dark(#ccc, #555);
  border-radius: 999px;
  cursor: pointer;
}
button.example:hover {
  background: light-dark(#f0f0f0, #2a2a2a);
}

/* Chat */
#chat {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1rem;
}
.message {
  padding: 0.5rem 0.9rem;
  border: 1px solid light-dark(#ddd, #444);
  /* Matched to half a single line's height, so a one-line message comes out
     as a pill like the example buttons, and a longer one stays rounded
     instead of turning into a stadium. */
  border-radius: 1rem;
  white-space: pre-wrap;
  max-width: 70ch;
}
.message.user {
  align-self: flex-end;
  background: light-dark(#e8eeff, #1d2740);
  border-color: light-dark(#bfd0f5, #35497a);
  /* The corner on the sender's side is tightened, so the two sides of the
     conversation lean away from each other. */
  border-bottom-right-radius: 0.25rem;
}
.message.assistant {
  align-self: flex-start;
  background: light-dark(#f0f7f2, #16231b);
  border-color: light-dark(#c8e0d1, #2d4735);
  border-bottom-left-radius: 0.25rem;
  /* Streamed Markdown is rendered to real elements, so the pre-wrap used for
     plain messages would double up the whitespace. */
  white-space: normal;
}
/* The global reset strips margins, so the Markdown elements need their own. */
.message.assistant :is(p, ul, ol, pre, blockquote, table) {
  margin-bottom: 0.6rem;
}
.message.assistant :is(h1, h2, h3, h4) {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}
.message.assistant :is(ul, ol) {
  padding-left: 1.2rem;
}
.message.assistant li {
  margin-bottom: 0.2rem;
}
.message.assistant > :last-child {
  margin-bottom: 0;
}
.message.assistant :is(code, pre) {
  font-family: ui-monospace, monospace;
  font-size: 12px;
}
.message.assistant code {
  background: light-dark(#f0f0f0, #2a2a2a);
  padding: 0.1em 0.3em;
}
.message.assistant pre {
  background: light-dark(#f6f6f6, #222);
  padding: 0.5rem;
  overflow-x: auto;
}
.message.assistant pre code {
  background: none;
  padding: 0;
}
.message.assistant a {
  color: light-dark(#1a56b8, #7fb0f2);
}
.message.error {
  align-self: flex-start;
  background: light-dark(#fff0f0, #331d1d);
  border-color: light-dark(#e0b4b4, #6b3333);
  border-bottom-left-radius: 0.25rem;
}

/* Tool calls */
.tool-call {
  /* Neutral default, used by a tool the model invented. Each declared tool
     overrides these two below, keyed by its color slot. */
  --tool-ink: light-dark(#555, #aaa);
  --tool-bg: light-dark(#f6f6f6, #1e1e1e);
  border-left: 3px solid var(--tool-ink);
  background: var(--tool-bg);
  padding: 0.4rem 0.6rem;
  font-family: ui-monospace, monospace;
  font-size: 12px;
}
.tool-call summary {
  cursor: pointer;
  color: var(--tool-ink);
}

/* One slot per tool, assigned in declaration order. */
.tool-call[data-tool="0"] {
  --tool-ink: light-dark(#8a6d00, #d9b64a);
  --tool-bg: light-dark(#fffaf0, #241f14);
}
.tool-call[data-tool="1"] {
  --tool-ink: light-dark(#12667f, #6cc3e0);
  --tool-bg: light-dark(#f0fafd, #14212a);
}
.tool-call[data-tool="2"] {
  --tool-ink: light-dark(#6b3f9e, #b998e8);
  --tool-bg: light-dark(#faf5ff, #1f1a2b);
}
.tool-call[data-tool="3"] {
  --tool-ink: light-dark(#2c7a4b, #7fce9c);
  --tool-bg: light-dark(#f2fbf6, #16241c);
}
.tool-call[data-tool="4"] {
  --tool-ink: light-dark(#a5457a, #eb9cc6);
  --tool-bg: light-dark(#fff5fa, #2a1722);
}
.tool-call[data-tool="5"] {
  --tool-ink: light-dark(#9c5518, #e0a86c);
  --tool-bg: light-dark(#fff7f0, #2a1d14);
}

/* A failed call is a failure first and a tool second. */
.tool-call.failed {
  --tool-ink: light-dark(#b03030, #e07070);
  --tool-bg: light-dark(#fff5f5, #2a1616);
}
.tool-call pre {
  margin-top: 0.4rem;
  max-height: 14rem;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Composer */
#composer {
  display: flex;
  gap: 0.5rem;
}
#user-input {
  flex: 1;
  font: inherit;
  color: inherit;
  padding: 0.5rem 0.6rem;
  background: light-dark(#fff, #1b1b1b);
  border: 1px solid light-dark(#ccc, #555);
}
#send-btn {
  font: inherit;
  padding: 0.5rem 1rem;
  cursor: pointer;
}
#send-btn[aria-disabled="true"],
#user-input[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Controls */
#controls {
  display: flex;
  gap: 0.5rem;
  /* Center, so the status text sits with the buttons rather than stretching
     to their height. */
  align-items: center;
  margin-bottom: 0.75rem;
}
#controls #status {
  flex: 1;
  margin-bottom: 0;
}
#reset-btn,
#activate-btn {
  font: inherit;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  white-space: nowrap;
}
#reset-btn[aria-disabled="true"],
#activate-btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Debug view */
#debug {
  margin-top: 1.5rem;
  border-top: 1px solid light-dark(#ddd, #444);
  padding-top: 0.75rem;
}
#debug > summary {
  cursor: pointer;
  color: light-dark(#555, #aaa);
}
#debug-log {
  margin-top: 0.75rem;
  font-family: ui-monospace, monospace;
  font-size: 12px;
}
.exchange-turn {
  margin: 1rem 0 0.5rem;
  padding-bottom: 0.2rem;
  border-bottom: 1px solid light-dark(#ddd, #444);
  font-weight: bold;
}
.exchange {
  margin-bottom: 0.5rem;
  padding: 0.3rem 0.5rem;
  border-left: 3px solid transparent;
  background: light-dark(#f7f7f7, #1b1b1b);
}
.exchange.sent {
  border-left-color: light-dark(#3b6ea5, #6f9fd8);
}
.exchange.received {
  border-left-color: light-dark(#3f7d51, #7bbf8e);
}
.exchange-label {
  color: light-dark(#555, #aaa);
  margin-bottom: 0.2rem;
}
.exchange pre {
  max-height: 18rem;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

#debug-toolbar {
  margin-top: 0.75rem;
}
#copy-debug {
  font: inherit;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
}

.exchange.failed {
  border-left-color: light-dark(#b03030, #e07070);
}