/* Axorn — Chat-UI v0 */
:root {
  --bg: #0b0b0c;
  --panel: #141416;
  --panel-hi: #1c1c20;
  --border: #262628;
  --text: #e8e8ea;
  --text-dim: #8a8a92;
  --accent: #d97757;
  --accent-hi: #e38968;
  --user-bubble: #1f2024;
  --assistant-bubble: transparent;
  --danger: #e05252;
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hi); text-decoration: underline; }

button {
  font: inherit;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: var(--radius);
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 500;
  transition: background .12s;
}
button:hover { background: var(--accent-hi); }
button:disabled { opacity: .5; cursor: default; }
button.ghost {
  background: transparent;
  color: var(--text-dim);
  padding: 6px 10px;
  font-size: 13px;
}
button.ghost:hover { background: var(--panel-hi); color: var(--text); }

input, textarea {
  font: inherit;
  background: var(--panel-hi);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  width: 100%;
  outline: none;
  transition: border-color .12s;
}
input:focus, textarea:focus { border-color: var(--accent); }

textarea { resize: none; font-family: inherit; }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
}
.login-card h1 {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: -0.5px;
}
.login-card .sub {
  color: var(--text-dim);
  margin: 0 0 24px;
  font-size: 14px;
}
.login-card form { display: grid; gap: 12px; }
.login-card .msg {
  margin-top: 14px;
  padding: 12px;
  border-radius: var(--radius);
  background: var(--panel-hi);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
}
.login-card .msg.ok { border-color: #2b6e3a; color: #7ed196; }
.login-card .msg.err { border-color: var(--danger); color: #ff8f8f; }

/* ---------- Chat layout ---------- */
.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
  min-height: 0;
}
.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.sidebar .head {
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
}
.sidebar .head strong { letter-spacing: -0.3px; }
.sidebar .newbtn {
  width: calc(100% - 32px);
  margin: 12px 16px 4px;
  padding: 10px;
  font-size: 14px;
}
.sidebar .convs {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
  min-height: 0;
}
.sidebar .conv {
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-dim);
  border-left: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}
.sidebar .conv .conv-title {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar .conv:hover { background: var(--panel-hi); color: var(--text); }
.sidebar .conv.active {
  background: var(--panel-hi);
  color: var(--text);
  border-left-color: var(--accent);
}
.sidebar .conv-del {
  background: transparent;
  color: var(--text-dim);
  font-size: 18px;
  line-height: 1;
  padding: 2px 8px;
  border-radius: 6px;
  opacity: 0;
  transition: opacity .12s, background .12s, color .12s;
}
.sidebar .conv:hover .conv-del { opacity: 1; }
.sidebar .conv-del:hover { background: rgba(224, 82, 82, .15); color: var(--danger); }
.sidebar .footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.sidebar .footer .footer-email {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.sidebar .footer button.ghost.active {
  background: var(--panel-hi);
  color: var(--accent);
}

.main {
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.thread {
  flex: 1;
  overflow-y: auto;
  padding: 24px 0;
}
.thread .empty {
  color: var(--text-dim);
  text-align: center;
  padding: 64px 20px;
  font-size: 14px;
}
.msg-row {
  max-width: 760px;
  margin: 0 auto 20px;
  padding: 0 24px;
}
.msg-row .role {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.msg-row .bubble {
  white-space: pre-wrap;
  word-wrap: break-word;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid transparent;
}
.msg-row.user .bubble {
  background: var(--user-bubble);
  border-color: var(--border);
}
.msg-row.assistant .bubble {
  background: var(--assistant-bubble);
}

/* Markdown-rendered assistant content */
.bubble.markdown p { margin: 0 0 10px; }
.bubble.markdown p:last-child { margin-bottom: 0; }
.bubble.markdown h1,
.bubble.markdown h2,
.bubble.markdown h3,
.bubble.markdown h4 { margin: 14px 0 8px; line-height: 1.3; }
.bubble.markdown h1 { font-size: 20px; }
.bubble.markdown h2 { font-size: 17px; }
.bubble.markdown h3 { font-size: 15px; color: var(--text); }
.bubble.markdown ul,
.bubble.markdown ol { margin: 6px 0 10px; padding-left: 22px; }
.bubble.markdown li { margin-bottom: 4px; }
.bubble.markdown code {
  background: var(--panel-hi);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
}
.bubble.markdown pre {
  background: var(--panel-hi);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  margin: 8px 0;
  overflow-x: auto;
}
.bubble.markdown pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: 13px;
  color: var(--text);
}
.bubble.markdown a { word-break: break-all; }

.composer {
  border-top: 1px solid var(--border);
  padding: 16px 24px 20px;
  background: var(--bg);
}
.composer-inner {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: end;
}
.composer textarea {
  min-height: 52px;
  max-height: 200px;
}
.composer .hint {
  max-width: 760px;
  margin: 6px auto 0;
  color: var(--text-dim);
  font-size: 12px;
}

.banner {
  background: #3a1e1e;
  color: #ffb3b3;
  border-bottom: 1px solid var(--danger);
  padding: 8px 16px;
  font-size: 13px;
  text-align: center;
}

/* ---------- Usage view ---------- */
.usage {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}
.usage h1 {
  margin: 0 0 4px;
  font-size: 26px;
  letter-spacing: -0.4px;
}
.usage .sub {
  color: var(--text-dim);
  margin: 0 0 24px;
  font-size: 14px;
}
.usage h2 {
  margin: 28px 0 10px;
  font-size: 15px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 500;
}
.usage .empty {
  color: var(--text-dim);
  padding: 24px;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  font-size: 14px;
}
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 16px 0 4px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.card-label {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.card-value {
  font-size: 22px;
  font-weight: 500;
  margin: 4px 0 2px;
  letter-spacing: -0.3px;
}
.card-sub {
  font-size: 12px;
  color: var(--text-dim);
}
.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-bottom: 8px;
}
.tbl th,
.tbl td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.tbl th {
  color: var(--text-dim);
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.tbl .num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl tbody tr:hover { background: var(--panel); }

/* ---------- Empty-State / Starter-Prompts ---------- */
.thread .empty .empty-title {
  font-size: 22px;
  letter-spacing: -0.3px;
  color: var(--text);
  margin-bottom: 6px;
}
.thread .empty .empty-sub {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 20px;
}
.thread .empty .starters {
  display: grid;
  gap: 8px;
  max-width: 520px;
  margin: 0 auto;
}
.thread .empty .starter {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 12px 14px;
  font-size: 14px;
  text-align: left;
  font-weight: 400;
  transition: background .12s, border-color .12s;
}
.thread .empty .starter:hover {
  background: var(--panel-hi);
  border-color: var(--accent);
}

/* ---------- Typing indicator ---------- */
.msg-row.typing .bubble {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 16px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
}
.msg-row.typing .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
  animation: typing 1.4s infinite ease-in-out both;
}
.msg-row.typing .dot:nth-child(2) { animation-delay: 0.16s; }
.msg-row.typing .dot:nth-child(3) { animation-delay: 0.32s; }
@keyframes typing {
  0%, 80%, 100% { opacity: 0.3; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-3px); }
}

/* ---------- Mobile top-bar + drawer ---------- */
.topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
.topbar .hamburger {
  background: transparent;
  color: var(--text);
  padding: 4px 10px;
  font-size: 20px;
  line-height: 1;
}
.topbar .hamburger:hover { background: var(--panel-hi); }
.backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 99;
  animation: fadeIn .16s ease-out;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    display: flex;
    position: fixed;
    inset: 0 auto 0 0;
    width: min(280px, 85vw);
    z-index: 100;
    transform: translateX(-100%);
    transition: transform .18s ease-out;
    box-shadow: 2px 0 16px rgba(0, 0, 0, 0.3);
  }
  .sidebar.open { transform: translateX(0); }
  .backdrop { display: block; }
  .topbar { display: flex; }
  .msg-row { padding: 0 16px; }
  .composer { padding: 12px 14px 16px; }
  .usage { padding: 16px; }
}

/* ===================================================================
 * Tool-Activity-Expander (unter Assistant-Bubbles)
 * =================================================================== */
.activity {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-2, #999);
}
.activity-summary {
  cursor: pointer;
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(217, 119, 87, 0.08);
  border: 1px solid rgba(217, 119, 87, 0.22);
  color: var(--accent, #d97757);
  user-select: none;
  list-style: none;
}
.activity-summary::-webkit-details-marker { display: none; }
.activity-summary::marker { display: none; }
.activity[open] .activity-summary { margin-bottom: 8px; }
.activity-body {
  border-left: 2px solid rgba(217, 119, 87, 0.22);
  padding: 4px 0 4px 12px;
  margin-left: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.activity-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.activity-item-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-1, #e8e8e8);
}
.activity-item-head.err .activity-name { color: #e06666; }
.activity-err {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(224, 102, 102, 0.15);
  color: #e06666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.activity-io {
  display: flex;
  gap: 6px;
  align-items: baseline;
  font-size: 11px;
  line-height: 1.45;
}
.activity-io-label {
  color: var(--text-2, #888);
  font-weight: 600;
  min-width: 22px;
  text-transform: lowercase;
}
.activity-io code {
  flex: 1;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 6px;
  border-radius: 4px;
  word-break: break-word;
  white-space: pre-wrap;
  color: var(--text-1, #d0d0d0);
}