public/chatclient/styles.css

:root {
  color-scheme: light;
  --bg: #f4efe7;
  --surface: rgba(255, 250, 242, 0.88);
  --surface-strong: #fffaf2;
  --surface-soft: rgba(255, 255, 255, 0.52);
  --ink: #1f1812;
  --muted: #6c5c50;
  --line: rgba(70, 49, 28, 0.14);
  --line-strong: rgba(70, 49, 28, 0.24);
  --accent: #c75a11;
  --accent-deep: #8f3f0a;
  --accent-soft: rgba(199, 90, 17, 0.14);
  --success: #166534;
  --shadow: 0 24px 64px rgba(70, 49, 28, 0.14);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(199, 90, 17, 0.15), transparent 28%),
    radial-gradient(circle at 85% 15%, rgba(26, 95, 63, 0.12), transparent 24%),
    linear-gradient(145deg, #f9f4ec, #ece0ce 55%, #e5d4be);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.client-shell {
  width: min(1080px, calc(100% - 28px));
  margin: 0 auto;
  padding: 18px 0 26px;
}

.workspace-card,
.editor-card,
.attachments-card,
.attachment-picker,
.settings-panel,
.output-card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.workspace-card {
  padding: 24px;
  display: grid;
  gap: 18px;
  min-height: calc(100vh - 44px);
}

.tab-button,
.format-button,
.tool-button,
.send-button,
.secondary-button,
.attachment-remove,
.attachment-preview-trigger,
.attachment-preview__close {
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--ink);
}

.eyebrow {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

h2,
h3 {
  margin: 0;
  font-family: "Avenir Next", "Space Grotesk", sans-serif;
}

.section-copy,
.empty-state,
.response-block p,
.attachment-meta span {
  margin: 0;
  line-height: 1.55;
  color: var(--muted);
}

.top-bar,
.section-head {
  display: flex;
  justify-content: flex-start;
  gap: 16px;
  align-items: center;
}

.tab-strip {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.tab-button {
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.tab-button.is-active {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.tab-button:hover,
.format-button:hover,
.tool-button:hover,
.send-button:hover,
.picker-mode-button:hover,
.picker-action-button:hover,
.attachment-remove:hover,
.attachment-preview-trigger:hover,
.attachment-preview__close:hover {
  transform: translateY(-1px);
}

.tab-panel {
  display: none;
  gap: 18px;
  animation: panel-in 180ms ease;
}

.tab-panel.is-active {
  display: grid;
}

.editor-card,
.attachments-card,
.attachment-picker,
.settings-panel,
.output-card {
  padding: 18px;
}

.editor-card {
  display: grid;
  gap: 14px;
}

.editor-toolbar,
.tool-row {
  display: flex;
  gap: 10px;
  flex-wrap: nowrap;
}

.format-button,
.tool-button,
.send-button,
.secondary-button {
  min-height: 48px;
  border-radius: 18px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: transform 160ms ease, opacity 160ms ease, background 160ms ease;
}

.format-button {
  min-width: 70px;
}

.tool-row {
  align-items: center;
}

.icon-button {
  width: 48px;
  min-width: 48px;
  padding: 0;
  flex: 0 0 48px;
}

.tool-button svg,
.send-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tool-button.is-active {
  border-color: var(--line-strong);
  background: var(--accent-soft);
}

.send-button {
  margin-left: auto;
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.send-button:disabled {
  opacity: 0.7;
  cursor: progress;
}

.secondary-button {
  white-space: nowrap;
}

.tool-row .send-button {
  margin-left: auto;
}

.rich-editor {
  min-height: 320px;
  padding: 22px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(255, 251, 246, 0.95)),
    repeating-linear-gradient(180deg, transparent, transparent 31px, rgba(70, 49, 28, 0.07) 32px);
  outline: none;
  font-size: 1rem;
  line-height: 1.75;
}

.rich-editor:empty::before {
  content: attr(data-placeholder);
  color: rgba(108, 92, 80, 0.8);
}

.attachments-card,
.attachment-picker,
.settings-panel {
  display: grid;
  gap: 16px;
}

.attachment-list {
  display: grid;
  gap: 12px;
}

.picker-mode-row,
.picker-grid {
  display: grid;
  gap: 12px;
}

.picker-mode-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.picker-mode-button,
.picker-action-button {
  min-height: 46px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--ink);
}

.picker-mode-button.is-active {
  border-color: var(--line-strong);
  background: var(--accent-soft);
}

.picker-panel {
  display: none;
  gap: 14px;
  padding: 14px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.picker-panel.is-active {
  display: grid;
}

.picker-copy {
  margin: 0;
  color: var(--muted);
}

.picker-grid {
  grid-template-columns: 180px minmax(0, 1fr);
}

.picker-link-field {
  grid-column: auto;
}

.attachment-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 12px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.attachment-preview-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 78px;
  height: 78px;
  padding: 0;
  border-radius: 18px;
  overflow: hidden;
}

.attachment-thumb {
  width: 78px;
  height: 78px;
  object-fit: cover;
}

.attachment-audio-tile {
  display: grid;
  gap: 6px;
  text-align: center;
}

.attachment-audio-tile svg {
  width: 24px;
  height: 24px;
  margin: 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.attachment-audio-tile span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.attachment-meta {
  display: grid;
  gap: 6px;
}

.attachment-remove {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 14px;
}

.attachment-preview {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 18px;
}

.attachment-preview__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(24, 18, 12, 0.58);
  backdrop-filter: blur(4px);
}

.attachment-preview__card {
  position: relative;
  z-index: 1;
  width: min(720px, 100%);
  max-height: min(86vh, 920px);
  padding: 20px;
  border-radius: 28px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  display: grid;
  gap: 18px;
}

.attachment-preview__head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}

.attachment-preview__close {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  padding: 0;
}

.attachment-preview__body {
  display: grid;
  place-items: center;
  min-height: 280px;
}

.attachment-preview__image,
.attachment-preview__audio-wrap {
  width: 100%;
}

.attachment-preview__image {
  max-width: 100%;
  max-height: 68vh;
  object-fit: contain;
  border-radius: 20px;
}

.attachment-preview__audio-wrap {
  padding: 22px;
  border-radius: 20px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
}

.attachment-preview__audio {
  width: 100%;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.settings-wide {
  grid-column: 1 / -1;
}

label,
.toggle-card {
  display: grid;
  gap: 8px;
}

label span,
.toggle-card span {
  font-size: 0.83rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

input,
textarea,
select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--surface-strong);
}

textarea {
  resize: vertical;
}

.toggle-card {
  align-items: center;
  grid-template-columns: 1fr auto;
  min-height: 56px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-strong);
}

.toggle-card input {
  width: 22px;
  height: 22px;
}

.response-output {
  display: grid;
  gap: 14px;
}

.response-block {
  padding: 18px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.response-block strong {
  display: inline-block;
  margin-bottom: 12px;
}

.response-image,
.response-audio {
  width: 100%;
  margin-top: 14px;
  border-radius: 18px;
}

.response-image {
  max-height: 420px;
  object-fit: cover;
}

.rich-response {
  display: grid;
  gap: 14px;
  line-height: 1.65;
}

.rich-response p,
.rich-response ul,
.rich-response pre {
  margin: 0;
}

.rich-response ul {
  padding-left: 20px;
}

.rich-response pre,
.raw-output {
  overflow: auto;
  border-radius: 20px;
  background: #171411;
  color: #f9f4ed;
  font-family: "IBM Plex Mono", Consolas, monospace;
}

.rich-response pre {
  padding: 16px;
}

.rich-response code {
  padding: 0.15em 0.35em;
  border-radius: 8px;
  background: rgba(31, 24, 18, 0.08);
  font-family: "IBM Plex Mono", Consolas, monospace;
}

.raw-output {
  margin: 0;
  padding: 18px;
  min-height: 420px;
  font-size: 0.92rem;
}

.error-toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  max-width: min(420px, calc(100% - 32px));
  padding: 14px 16px;
  border: 0;
  border-radius: 16px;
  color: #fff;
  background: rgba(127, 29, 29, 0.96);
  box-shadow: var(--shadow);
  text-align: left;
}

.status-ok {
  color: var(--success);
}

.status-busy {
  color: var(--accent-deep);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1040px) {
  .workspace-card {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .client-shell {
    width: min(100% - 14px, 100%);
    padding-top: 8px;
    gap: 14px;
  }

  .workspace-card,
  .editor-card,
  .attachments-card,
  .attachment-picker,
  .settings-panel,
  .output-card {
    padding: 16px;
    border-radius: 22px;
  }

  .top-bar,
  .section-head,
  .attachment-item {
    grid-template-columns: 1fr;
  }

  .top-bar,
  .section-head {
    display: grid;
  }

  .tab-strip {
    justify-content: start;
  }

  .tool-row {
    gap: 8px;
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .picker-mode-row,
  .picker-grid {
    grid-template-columns: 1fr;
  }

  .attachment-item {
    grid-template-columns: 1fr;
  }

  .tool-row .send-button {
    margin-left: auto;
  }
}