:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #eef1f6;
  color: #172033;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

button,
input,
select {
  font: inherit;
}

.shell {
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #111827;
  color: #f8fafc;
  padding: 24px;
}

.brand {
  align-items: center;
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
}

.mark {
  background: linear-gradient(135deg, #60a5fa, #22c55e);
  border-radius: 8px;
  display: block;
  height: 42px;
  width: 42px;
}

h1,
h2,
p {
  margin: 0;
}

.brand h1 {
  font-size: 22px;
  line-height: 1.1;
}

.brand p,
.toolbar p,
.subject span,
.field span {
  color: #94a3b8;
  font-size: 13px;
}

.field,
.subject,
.panel {
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

select,
input {
  border: 1px solid #d6dbe6;
  border-radius: 8px;
  padding: 10px 12px;
}

.sidebar select,
.subject code {
  background: #1f2937;
  border: 1px solid #334155;
  color: #f8fafc;
}

.subject code {
  border-radius: 8px;
  overflow-wrap: anywhere;
  padding: 10px;
}

.panel {
  border-top: 1px solid #334155;
  padding-top: 18px;
}

.panel h2 {
  font-size: 16px;
}

.grant-list {
  display: grid;
  gap: 8px;
}

.grant-row {
  align-items: center;
  border: 1px solid #334155;
  border-radius: 8px;
  display: flex;
  gap: 10px;
  padding: 10px;
}

.avatar {
  align-items: center;
  border-radius: 50%;
  color: #fff;
  display: inline-flex;
  font-weight: 700;
  height: 34px;
  justify-content: center;
  width: 34px;
}

button {
  background: #2563eb;
  border: 0;
  border-radius: 8px;
  color: #fff;
  cursor: pointer;
  padding: 11px 14px;
}

.button {
  background: #2563eb;
  border-radius: 8px;
  color: #fff;
  display: inline-block;
  padding: 11px 14px;
  text-align: center;
  text-decoration: none;
}

.auth-card {
  border: 1px solid #334155;
  border-radius: 8px;
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding: 12px;
}

.auth-card span,
.auth-card a {
  color: #94a3b8;
  font-size: 13px;
}

.auth-card .button {
  color: #fff;
  font-size: 16px;
}

.workspace {
  display: grid;
  grid-template-rows: auto 1fr;
  min-width: 0;
}

.toolbar {
  align-items: center;
  background: #fff;
  border-bottom: 1px solid #dbe1ec;
  display: flex;
  justify-content: space-between;
  padding: 20px 24px;
}

.status {
  background: #dff7e5;
  border-radius: 999px;
  color: #166534;
  font-size: 13px;
  padding: 8px 12px;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(240px, 320px) 1fr;
  min-height: 0;
}

.threads {
  background: #f8fafc;
  border-right: 1px solid #dbe1ec;
  overflow: auto;
  padding: 14px;
}

.thread {
  background: #fff;
  border: 1px solid #dbe1ec;
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
  padding: 12px;
}

.thread.active {
  border-color: #2563eb;
}

.conversation {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 0;
}

.conversation-title {
  background: #fff;
  border-bottom: 1px solid #dbe1ec;
  font-weight: 700;
  padding: 16px 20px;
}

.messages {
  display: grid;
  gap: 10px;
  overflow: auto;
  padding: 20px;
}

.message {
  background: #fff;
  border: 1px solid #dbe1ec;
  border-radius: 8px;
  max-width: 70ch;
  padding: 12px;
}

.composer {
  background: #fff;
  border-top: 1px solid #dbe1ec;
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr auto;
  padding: 16px;
}

@media (max-width: 840px) {
  .shell,
  .content-grid {
    grid-template-columns: 1fr;
  }
}