.empty-message {
  margin: auto 0;
  color: rgba(23, 24, 22, 0.55);
  font-size: var(--hw-font-size-sm);
  text-align: center;
}

.panel-message {
  max-width: 85%;
  margin: 0;
  padding: var(--hw-message-padding-y) var(--hw-message-padding-x);
  border: var(--hw-border-width) solid #3b3b3a;
  border-radius: var(--hw-message-radius);
  font-size: calc(var(--hw-unit) * 3.75);
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.panel-message.user {
  align-self: flex-end;
  background: #252625;
  color: var(--hw-field-ink);
  white-space: pre-wrap;
}

.panel-message.assistant {
  align-self: flex-start;
  background: var(--hw-canvas);
  color: var(--hw-ink);
}

.message-in {
  animation: message-in var(--hw-motion-fast) ease-out both;
}

@keyframes message-in {
  from {
    opacity: 0;
    transform: translateY(calc(var(--hw-unit) * 1.25));
  }
}

/* ── markdown ─────────────────────────────────────────────────────────── */

.message-markdown > :first-child {
  margin-top: 0;
}

.message-markdown > :last-child {
  margin-bottom: 0;
}

.md-paragraph,
.md-list,
.md-quote,
.md-code {
  margin: var(--hw-space-2) 0;
}

.md-heading {
  margin: var(--hw-space-3) 0 var(--hw-space-1);
  font-size: var(--hw-font-size-md);
  font-weight: 650;
}

.md-list {
  padding-left: var(--hw-space-5);
}

.md-list li + li {
  margin-top: var(--hw-space-1);
}

.md-quote {
  padding-left: var(--hw-space-3);
  border-left: var(--hw-border-width) solid var(--hw-panel-border);
  color: var(--hw-ink-muted);
}

.md-rule {
  margin: var(--hw-space-3) 0;
  border: 0;
  border-top: var(--hw-border-width) solid var(--hw-panel-border);
}

.message-markdown code {
  padding: 0 calc(var(--hw-unit) / 2);
  border-radius: var(--hw-space-1);
  background: rgba(23, 24, 22, 0.08);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
}

.md-code {
  padding: var(--hw-space-2) var(--hw-space-3);
  overflow-x: auto;
  border-radius: var(--hw-space-2);
  background: rgba(23, 24, 22, 0.08);
}

.md-code code {
  padding: 0;
  background: transparent;
}

.message-markdown a {
  color: var(--hw-accent);
}

/* ── streaming and pending ───────────────────────────────────────────── */

.stream-cursor {
  display: inline-block;
  width: calc(var(--hw-unit) * 1.5);
  height: 1em;
  margin-left: calc(var(--hw-unit) / 2);
  vertical-align: text-bottom;
  background: var(--hw-accent);
  animation: stream-cursor 1s steps(2, start) infinite;
}

@keyframes stream-cursor {
  50% {
    opacity: 0;
  }
}

.panel-message.pending {
  display: flex;
  align-items: center;
  gap: var(--hw-space-2);
  color: var(--hw-ink-muted);
}

.pending-dots {
  display: inline-flex;
  gap: var(--hw-space-1);
}

.pending-dots i {
  width: var(--hw-space-1);
  height: var(--hw-space-1);
  border-radius: 50%;
  background: currentColor;
  animation: pending-dot 1.1s ease-in-out infinite;
}

.pending-dots i:nth-child(2) {
  animation-delay: 0.15s;
}

.pending-dots i:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes pending-dot {
  0%,
  60%,
  100% {
    opacity: 0.25;
  }
  30% {
    opacity: 1;
  }
}

/* ── file bubble ─────────────────────────────────────────────────────── */

.file-bubble {
  display: inline-flex;
  align-items: center;
  gap: var(--hw-space-2);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.file-bubble-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-bubble-size {
  color: var(--hw-field-placeholder);
  font-size: var(--hw-font-size-sm);
}

/* ── tool call ───────────────────────────────────────────────────────── */

.tool-call {
  align-self: flex-start;
  max-width: 85%;
  color: var(--hw-ink);
}

.tool-call-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--hw-space-1);
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: var(--hw-font-size-sm);
  cursor: pointer;
}

.tool-call-toggle[disabled] {
  cursor: default;
}

.tool-call-chevron {
  transition: transform var(--hw-motion-fast) ease;
}

.tool-call-chevron.is-open {
  transform: rotate(90deg);
}

.tool-call-details {
  margin-top: var(--hw-space-1);
  padding-left: var(--hw-space-4);
  font-size: var(--hw-font-size-sm);
}

.tool-call-summary {
  margin: 0 0 var(--hw-space-1);
  color: var(--hw-ink-muted);
}

.tool-call-json {
  max-height: calc(var(--hw-unit) * 40);
  margin: 0;
  padding: var(--hw-space-2);
  overflow: auto;
  border-radius: var(--hw-space-2);
  background: rgba(23, 24, 22, 0.08);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: calc(var(--hw-unit) * 3);
}

/* ── uploads ─────────────────────────────────────────────────────────── */

.uploads {
  display: grid;
  gap: var(--hw-space-2);
  padding: var(--hw-space-2);
  border-radius: var(--hw-space-4);
  background: rgba(247, 247, 245, 0.5);
}

.upload-head {
  display: flex;
  align-items: center;
  gap: var(--hw-space-2);
  font-size: var(--hw-font-size-sm);
}

.upload-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-status {
  color: var(--hw-ink-muted);
}

.upload-error .upload-status {
  color: var(--hw-accent);
}

.upload-actions {
  display: inline-flex;
  gap: var(--hw-space-1);
}

.upload-action {
  display: grid;
  place-items: center;
  width: var(--hw-space-5);
  height: var(--hw-space-5);
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--hw-ink);
  cursor: pointer;
}

.upload-action:hover {
  background: rgba(23, 24, 22, 0.08);
}

.upload-track {
  height: var(--hw-space-1);
  margin-top: var(--hw-space-1);
  overflow: hidden;
  border-radius: var(--hw-space-1);
  background: rgba(23, 24, 22, 0.12);
}

.upload-bar {
  height: 100%;
  background: var(--hw-accent);
  transition: width var(--hw-motion-fast) linear;
}

.upload-error .upload-bar {
  background: var(--hw-ink-muted);
}