/*
 * Chat playground surface. Every colour, radius, control height, shadow, duration, and easing comes
 * from the shared foundation in static/style.css, so this file declares no palette and no theme:
 * light, dark, focus rings, selection blue, disabled controls, and reduced motion all follow the
 * shared tokens. The page is an app viewport rather than a scrolling document, and the shared header
 * keeps its foundation chrome as the first shell row.
 */

body[data-page="chat"] {
  overflow: hidden;
}

body[data-page="chat"] [data-chat-shell] {
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-areas:
    "header header"
    "sidebar main";
  gap: 14px;
  width: 100%;
  max-width: 1600px;
  height: 100vh;
  margin: 0 auto;
  padding: calc(22px + env(safe-area-inset-top)) clamp(20px, 3vw, 44px) calc(22px + env(safe-area-inset-bottom));
}

/* The shared header only takes its grid slot here; its surface, border, and radius stay shared. */
body[data-page="chat"] header[data-shared-header] {
  grid-area: header;
}

body[data-page="chat"] [data-chat-sidebar] {
  grid-area: sidebar;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 14px;
  min-width: 0;
  min-height: 0;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  overflow: auto;
}

body[data-page="chat"] [data-chat-sidebar-actions] {
  display: flex;
  align-items: center;
  gap: 10px;
}

body[data-page="chat"] [data-chat-sidebar-body] {
  display: grid;
  gap: 14px;
  align-content: start;
}

body[data-page="chat"] [data-chat-panel] {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-2);
}

body[data-page="chat"] [data-chat-panel] > summary,
body[data-page="chat"] [data-passkey-advanced] > summary,
body[data-page="chat"] [data-token-fallback] > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: var(--control-height);
  margin: 0;
  list-style: none;
  cursor: pointer;
  color: var(--muted-2);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color var(--duration-fast) ease;
}

body[data-page="chat"] [data-chat-panel] > summary::-webkit-details-marker,
body[data-page="chat"] [data-passkey-advanced] > summary::-webkit-details-marker,
body[data-page="chat"] [data-token-fallback] > summary::-webkit-details-marker {
  display: none;
}

body[data-page="chat"] [data-chat-panel] > summary::marker,
body[data-page="chat"] [data-passkey-advanced] > summary::marker,
body[data-page="chat"] [data-token-fallback] > summary::marker {
  content: "";
}

body[data-page="chat"] [data-chat-panel] > summary::after,
body[data-page="chat"] [data-passkey-advanced] > summary::after,
body[data-page="chat"] [data-token-fallback] > summary::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid currentcolor;
  border-bottom: 2px solid currentcolor;
  transform: rotate(-45deg);
  transition: transform var(--duration-fast) var(--ease-out);
}

body[data-page="chat"] [data-chat-panel][open] > summary::after,
body[data-page="chat"] [data-passkey-advanced][open] > summary::after,
body[data-page="chat"] [data-token-fallback][open] > summary::after {
  transform: rotate(45deg);
}

body[data-page="chat"] [data-passkey-advanced],
body[data-page="chat"] [data-token-fallback] {
  display: grid;
  gap: 10px;
}

body[data-page="chat"] [data-panel-body],
body[data-page="chat"] [data-passkey-advanced-body],
body[data-page="chat"] [data-token-fallback-body] {
  display: grid;
  gap: 12px;
}

body[data-page="chat"] [data-panel-body] > details[data-disclosure] > summary {
  display: flex;
  align-items: center;
  min-height: var(--control-height);
  transition: color var(--duration-fast) ease;
}

body[data-page="chat"] [data-panel-body] > details[data-disclosure] [data-layout="row"] {
  margin-block: 12px;
}

/* One icon family: 18px inline currentColor strokes at the shared 1.7 weight. */
body[data-page="chat"] button svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Auth status text names an arbitrary backend origin, so it must wrap instead of widening the page. */
body[data-page="chat"] [data-badge] {
  min-width: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
}

/* Streaming keeps the composer and its model controls live, so they need a disabled treatment. */
body[data-page="chat"] :is(input, select, textarea):disabled {
  opacity: 0.52;
  cursor: not-allowed;
}

body[data-page="chat"] [data-chat-main] {
  grid-area: main;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 16px;
  min-width: 0;
  min-height: 0;
  padding: 4px 0 0;
}

body[data-page="chat"] [data-chat-topbar] {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-width: 0;
}

body[data-page="chat"] [data-messages] {
  min-height: 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: auto;
}

body[data-page="chat"] [data-messages]:empty {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.875rem;
  text-align: center;
}

body[data-page="chat"] [data-messages]:empty::before {
  content: "Start a new chat.";
}

body[data-page="chat"] [data-message] {
  max-width: min(720px, 92%);
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
  color: var(--text);
  display: grid;
  gap: 8px;
  font-size: 0.875rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

body[data-page="chat"] [data-message-content] {
  white-space: pre-wrap;
}

/*
 * Streaming insertion point. Token streaming and keyboard-sent messages never animate, so the
 * caret is a static marker that disappears with [data-streaming] instead of a blinking cursor.
 */
body[data-page="chat"] [data-message][data-streaming] [data-message-content]::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 1.1em;
  margin-left: 4px;
  vertical-align: -0.18em;
  border-radius: 1px;
  background: var(--muted);
}

body[data-page="chat"] [data-message="user"] {
  align-self: flex-end;
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
}

body[data-page="chat"] [data-message="assistant"] {
  align-self: flex-start;
}

body[data-page="chat"] [data-message="system"] {
  align-self: center;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.8125rem;
  text-align: center;
}

body[data-page="chat"] [data-message="error"] {
  align-self: center;
  border-color: var(--danger);
  background: var(--danger-fill);
  color: var(--danger);
  font-size: 0.8125rem;
}

body[data-page="chat"] [data-chat-form] {
  display: grid;
  gap: 10px;
}

body[data-page="chat"] [data-chat-compose] {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--input-border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

body[data-page="chat"] [data-chat-compose]:focus-within {
  border-color: var(--focus-ring);
  box-shadow:
    0 0 0 3px var(--focus-ring-soft),
    var(--shadow-soft);
}

/* The textarea is borderless inside the compose surface, so the surface carries the focus ring. */
body[data-page="chat"] [data-chat-form] textarea {
  min-height: 60px;
  padding: 8px 10px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

body[data-page="chat"] [data-chat-form] textarea:focus {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

body[data-page="chat"] [data-chat-compose-actions] {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

/* Anchored to the button's left edge so a long tooltip stays inside a 320px viewport. */
body[data-page="chat"] [data-chat-form] button[data-tooltip]::after {
  left: 0;
}

body[data-page="chat"] [data-chat-stats] {
  min-width: 0;
  min-height: 28px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
  overflow-wrap: anywhere;
  text-align: center;
  white-space: normal;
}

/* The sidebar action sits near the viewport edge, so its tooltip grows to the right. */
body[data-page="chat"] [data-chat-sidebar-actions] button[data-tooltip]::after {
  left: 0;
  transform-origin: 0 100%;
  transform: translate(0, 4px) scale(0.97);
}

body[data-page="chat"] [data-chat-sidebar-actions] button[data-tooltip]:focus-visible::after {
  transform: translate(0, 0) scale(1);
}

@media (hover: hover) and (pointer: fine) {
  body[data-page="chat"] [data-chat-panel] > summary:hover,
  body[data-page="chat"] [data-passkey-advanced] > summary:hover,
  body[data-page="chat"] [data-token-fallback] > summary:hover,
  body[data-page="chat"] [data-panel-body] > details[data-disclosure] > summary:hover {
    color: var(--text);
  }

  body[data-page="chat"] [data-chat-sidebar-actions] button[data-tooltip]:hover::after {
    transform: translate(0, 0) scale(1);
  }
}

@media (max-width: 900px) {
  body[data-page="chat"] {
    overflow: auto;
  }

  body[data-page="chat"] [data-chat-shell] {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "header"
      "main"
      "sidebar";
    height: auto;
    min-height: 100vh;
    padding: calc(14px + env(safe-area-inset-top)) 12px calc(24px + env(safe-area-inset-bottom));
  }

  body[data-page="chat"] [data-chat-main] {
    min-height: auto;
    padding: 4px 0 0;
  }

  body[data-page="chat"] [data-chat-sidebar] {
    min-height: auto;
    padding: 16px;
  }

  body[data-page="chat"] [data-chat-topbar] {
    align-items: flex-start;
    flex-direction: column;
  }

  body[data-page="chat"] [data-chat-compose] {
    grid-template-columns: minmax(0, 1fr);
  }

  body[data-page="chat"] [data-chat-compose-actions] {
    justify-content: flex-end;
  }

  body[data-page="chat"] [data-messages] {
    min-height: 50vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  body[data-page="chat"] [data-chat-panel] > summary::after,
  body[data-page="chat"] [data-passkey-advanced] > summary::after,
  body[data-page="chat"] [data-token-fallback] > summary::after {
    transition: none;
  }
}