/* ============================================================
   Seed Code Chat — Chat Area
   Welcome · Messages · Markdown · Code blocks · Composer bits
   ============================================================ */

/* ==================== Welcome screen ==================== */

.welcome {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px 20px 20px;
}

.welcome-logo {
  width: 64px;
  height: 64px;
  margin-bottom: 20px;
  color: var(--brand-strong);
  filter: drop-shadow(0 0 14px var(--brand-glow));
}

.welcome h1 {
  font-size: var(--fs-30);
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.welcome h1 .accent {
  color: var(--brand-strong);
}

.welcome .w-sub {
  color: var(--muted);
  font-size: var(--fs-15);
  margin-bottom: 32px;
  max-width: 460px;
}

.welcome-suggestions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  width: 100%;
  max-width: 640px;
}

.suggestion {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  color: var(--text-2);
  font-size: var(--fs-13);
  text-align: left;
  transition: border-color var(--t-base), background var(--t-base),
    transform var(--t-fast), box-shadow var(--t-base);
}

.suggestion:hover {
  border-color: var(--brand-deep);
  background: var(--surface-3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.suggestion svg {
  color: var(--brand-strong);
  flex: none;
  margin-top: 1px;
}

.suggestion .seedcode-logo {
  width: 16px;
  height: 16px;
  margin-top: 1px;
}

.suggestion .s-t {
  font-weight: 600;
  color: var(--text);
  display: block;
  margin-bottom: 2px;
}

.suggestion .s-d {
  color: var(--muted);
  font-size: var(--fs-12);
  display: block;
  line-height: 1.4;
}

/* ==================== Message list ==================== */

.message-list {
  display: flex;
  flex-direction: column;
}

.message {
  position: relative;
  animation: sc-fade-up var(--t-med) var(--ease-out);
}

.message.user {
  align-self: flex-end;
  max-width: min(85%, 560px);
  margin: 6px 0 18px;
}

.message.assistant {
  margin: 0 0 24px;
}

.message.system {
  align-self: center;
  margin: 8px 0 16px;
}

/* ---- User bubble ---- */
.user-bubble {
  background: var(--surface-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg) var(--r-lg) var(--r-sm) var(--r-lg);
  padding: 10px 14px;
  font-size: var(--fs-15);
  color: var(--text);
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  box-shadow: var(--shadow-1);
}

.user-bubble .attach-note {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-12);
  color: var(--muted);
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--border);
}

.user-bubble .attach-note svg {
  color: var(--brand-strong);
  flex: none;
}

/* ---- Message meta row (avatar, name, actions) ---- */
.msg-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.assistant .msg-meta {
  justify-content: space-between;
}

.seedcode-logo {
  width: 18px;
  height: 18px;
  object-fit: contain;
  display: block;
  flex: none;
}

.msg-avatar {
  width: 26px;
  height: 26px;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-dim);
  border: 1px solid rgba(46, 204, 113, 0.3);
  color: var(--brand-strong);
  flex: none;
}

.msg-avatar .seedcode-logo {
  width: 16px;
  height: 16px;
}

.msg-avatar.user {
  background: var(--surface-4);
  border-color: var(--border-strong);
  color: var(--text-2);
}

.msg-who {
  font-size: var(--fs-13);
  font-weight: 600;
  color: var(--text-2);
}

.msg-who .msg-model {
  font-size: var(--fs-11);
  color: var(--muted);
  font-weight: 500;
  margin-left: 6px;
}

.msg-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  opacity: 0;
  transition: opacity var(--t-fast);
}

.message:hover .msg-actions,
.message .msg-actions:focus-within {
  opacity: 1;
}

.msg-actions .icon-btn {
  width: 30px;
  height: 30px;
}

/* ---- Assistant markdown content ---- */
.markdown {
  font-size: var(--fs-15);
  line-height: 1.7;
  color: var(--text);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

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

.markdown h1,
.markdown h2,
.markdown h3,
.markdown h4,
.markdown h5,
.markdown h6 {
  margin: 1.4em 0 0.6em;
}

.markdown h1 { font-size: 1.5em; }
.markdown h2 { font-size: 1.3em; }
.markdown h3 { font-size: 1.16em; }
.markdown h4 { font-size: 1.05em; }

.markdown h1:first-child,
.markdown h2:first-child,
.markdown h3:first-child {
  margin-top: 0;
}

.markdown p {
  margin: 0 0 1em;
}

.markdown ul,
.markdown ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
}

.markdown li {
  margin: 0.3em 0;
}

.markdown li::marker {
  color: var(--brand-strong);
}

.markdown blockquote {
  margin: 0 0 1em;
  padding: 2px 14px;
  border-left: 3px solid var(--brand-deep);
  color: var(--text-2);
  background: var(--brand-dim);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.markdown hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: 1.6em 0;
}

.markdown table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1em;
  font-size: var(--fs-14);
  display: block;
  overflow-x: auto;
}

.markdown th,
.markdown td {
  border: 1px solid var(--border);
  padding: 7px 12px;
  text-align: left;
}

.markdown th {
  background: var(--surface-3);
  font-weight: 600;
  color: var(--text-2);
}

.markdown tr:nth-child(even) td {
  background: color-mix(in srgb, var(--surface-2) 55%, transparent);
}

.markdown img {
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  max-height: 420px;
}

.markdown code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--brand-soft);
}

/* ---- Code blocks ---- */
.code-block {
  margin: 1em 0;
  border-radius: var(--r-md);
  border: 1px solid var(--border-strong);
  overflow: hidden;
  background: #0A0C0B;
}

.code-block .code-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  background: var(--surface-3);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  color: var(--muted);
  letter-spacing: 0.02em;
}

.code-block .code-head .lang-label {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.code-block .code-head .lang-label::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-strong);
  box-shadow: 0 0 6px var(--brand-glow-strong);
  flex: none;
}

.code-block .code-head .copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--fs-11);
  font-weight: 600;
  color: var(--muted);
  padding: 3px 8px;
  border-radius: var(--r-sm);
  transition: color var(--t-fast), background var(--t-fast);
}

.code-block .code-head .copy-btn:hover {
  color: var(--brand-strong);
  background: var(--brand-dim);
}

.code-block .code-head .copy-btn.copied {
  color: var(--brand-strong);
  background: var(--brand-dim);
  border: 1px solid rgba(46, 204, 113, 0.35);
  padding: 2px 7px;
}

.code-block pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
  line-height: 1.6;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
}

.code-block pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-2);
  font-size: inherit;
  display: block;
  tab-size: 2;
}

/* Syntax tokens */
.tok-comment { color: #6B7280; font-style: italic; }
.tok-string { color: #86E39B; }
.tok-keyword { color: #7BED9F; font-weight: 600; }
.tok-number { color: #FBBF24; }
.tok-func { color: #67E8F9; }
.tok-type { color: #A78BFA; }
.tok-var { color: #93C5FD; }
.tok-attr { color: #F0ABFC; }
.tok-operator { color: #9CA3AF; }
.tok-tag { color: #7BED9F; }
.tok-punct { color: #9CA3AF; }
.tok-property { color: #93C5FD; }
.tok-bool { color: #FBBF24; }
.tok-regex { color: #FCA5A5; }

/* ---- Streaming state ---- */
.msg-streaming .markdown {
  min-height: 1.5em;
}

/* ---- Seed Code response loader ----
   Shown inside the streaming assistant message the moment generation
   starts (renderer.createStreamElement). Collapses smoothly on the
   first content chunk (revealStream → .done) and on stop / error
   (stopStreamLoader → .done). Fixed box keeps layout stable. */
.seed-load {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 40px;
  margin: 4px 0 8px;
  overflow: hidden;
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity var(--t-med) var(--ease-out),
    height var(--t-med) var(--ease-out),
    margin var(--t-med) var(--ease-out),
    transform var(--t-med) var(--ease-out);
}

.seed-load-ico {
  position: relative;
  width: 26px;
  height: 26px;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.seed-load-ico::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1.5px solid transparent;
  border-top-color: var(--brand-glow-strong);
  opacity: 0.55;
  animation: seed-orbit 2.8s linear infinite;
}

.seed-load-ico::after {
  content: "";
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--brand-glow-strong) 0%, transparent 68%);
  animation: seed-glow 2.6s ease-in-out infinite;
  pointer-events: none;
}

.seed-load-ico img {
  position: relative;
  z-index: 1;
  width: 22px;
  height: 22px;
  animation: seed-breathe 3.2s ease-in-out infinite;
}

.seed-load-text {
  font-size: var(--fs-13);
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.seed-load.done {
  opacity: 0;
  height: 0;
  margin: 0;
  transform: translateY(-4px);
  pointer-events: none;
}

/* First streamed content fades in softly under the collapsing loader. */
.msg-streaming.has-stream .markdown {
  animation: sc-fade-in var(--t-med) var(--ease-out);
}

.streaming-caret::after {
  content: "▍";
  color: var(--brand-strong);
  margin-left: 1px;
  animation: sc-caret 0.9s step-start infinite;
  font-weight: 400;
}

/* ---- Generation status bar ---- */
.gen-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0 8px;
  padding: 5px 10px;
  border-radius: var(--r-pill);
  background: var(--brand-dim);
  border: 1px solid rgba(46, 204, 113, 0.25);
  color: var(--text-2);
  font-size: var(--fs-12);
  animation: sc-fade-in var(--t-fast);
}

.gen-status .gs-provider {
  color: var(--brand-soft);
  font-weight: 600;
}

.gen-status.error {
  background: var(--danger-bg);
  border-color: rgba(248, 113, 113, 0.3);
  color: var(--danger);
  border-radius: var(--r-md);
  align-items: flex-start;
}

.gen-status.error .gs-provider {
  color: var(--danger);
}

.gen-status .icon-btn {
  width: 26px;
  height: 26px;
}

/* ---- Inline error card ---- */
.error-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: var(--danger-bg);
  border: 1px solid rgba(248, 113, 113, 0.28);
  margin: 0 0 16px;
  animation: sc-fade-up var(--t-base);
}

.error-card svg {
  color: var(--danger);
  flex: none;
  margin-top: 2px;
}

.error-card .ec-title {
  font-weight: 600;
  color: var(--danger);
  font-size: var(--fs-14);
  margin-bottom: 2px;
}

.error-card .ec-body {
  color: var(--text-2);
  font-size: var(--fs-13);
  line-height: 1.5;
}

.error-card .ec-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(0,0,0,0.3);
  border-radius: 4px;
  padding: 1px 5px;
}

.error-card .ec-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

/* ---- Edit textarea ---- */
.edit-box {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  color: var(--text);
  font-size: var(--fs-15);
  line-height: 1.55;
  padding: 10px 12px;
  min-height: 90px;
  resize: vertical;
}

.edit-box:focus {
  outline: none;
  border-color: var(--brand-deep);
  box-shadow: var(--shadow-focus);
}

.edit-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  justify-content: flex-end;
}

/* ---- Scroll target ---- */
.anchor {
  scroll-margin-top: 20px;
}

/* ==================== Offline banner ==================== */

.offline-banner {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 7px 16px;
  background: var(--warning-bg);
  border-bottom: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--warning);
  font-size: var(--fs-13);
  font-weight: 600;
}

.offline-banner svg {
  flex: none;
}