:root {
  color-scheme: dark;
  --bg: #0c0f14;
  --bg-raise: #151a22;
  --line: #2a3340;
  --text: #e8edf4;
  --muted: #93a0b3;
  --accent: #d7a15f;
  --user: #1d3a4f;
  --bot: #1a212c;
  --danger: #e07a7a;
  --top: 56px;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-l: env(safe-area-inset-left, 0px);
  --safe-r: env(safe-area-inset-right, 0px);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}
button, input, textarea, select { font: 16px/1.4 "Segoe UI", system-ui, sans-serif; color: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

#login {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: calc(24px + var(--safe-t)) 16px calc(24px + var(--safe-b));
}
.card {
  width: min(100%, 400px);
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 22px;
}
.eyebrow { margin: 0; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); font-size: 12px; }
.card h1 { margin: 8px 0; font-size: 28px; }
.muted { color: var(--muted); margin: 0 0 16px; }
.card input, .card button, #drawer button, #drawer select, #send, #attach {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #10151c;
  padding: 12px 14px;
}
.card button, #send {
  margin-top: 10px;
  background: var(--accent);
  color: #1a1208;
  border: 0;
  font-weight: 650;
}
.error { min-height: 1.2em; color: var(--danger); margin: 10px 0 0; }

#app {
  height: 100%;
  display: grid;
  grid-template-rows: auto 1fr;
  padding-top: var(--safe-t);
}
.topbar {
  height: var(--top);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 12px 0 calc(12px + var(--safe-l));
  border-bottom: 1px solid var(--line);
  background: rgba(12, 15, 20, 0.92);
  backdrop-filter: blur(10px);
}
.brand { min-width: 0; display: flex; flex-direction: column; }
.brand strong { font-size: 15px; }
#header-model {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#menu-btn {
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 12px;
  background: var(--bg-raise);
  display: grid;
  gap: 5px;
  place-content: center;
  flex: 0 0 auto;
}
#menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

#backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 20;
}
#drawer {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(86vw, 320px);
  padding: calc(16px + var(--safe-t)) 16px calc(16px + var(--safe-b)) calc(16px + var(--safe-l));
  background: #121820;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transform: translateX(-105%);
  transition: transform 0.28s ease;
  overflow: auto;
}
#drawer.open { transform: translateX(0); }
.drawer-head { display: flex; justify-content: space-between; align-items: center; }
#close-drawer {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: transparent;
  font-size: 22px;
}
#model-description, .hint, #status { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.4; }
#model-description { font-style: italic; }
#status { color: var(--accent); min-height: 1.2em; }

main {
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding-bottom: var(--safe-b);
  padding-right: var(--safe-r);
}
.tabs {
  display: flex;
  gap: 8px;
  padding: 10px 12px 0 calc(12px + var(--safe-l));
}
.tabs button {
  flex: 1;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  padding: 8px 10px;
}
.tabs button.active {
  background: var(--bg-raise);
  color: var(--text);
  border-color: var(--accent);
}
#view-chat, #view-audit {
  min-height: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
}
#log {
  flex: 1;
  overflow: auto;
  padding: 16px 12px 8px calc(12px + var(--safe-l));
  display: flex;
  flex-direction: column;
  gap: 10px;
}
#log.drag { outline: 2px dashed var(--accent); outline-offset: -8px; }
.msg {
  max-width: min(92%, 720px);
  padding: 12px 14px;
  border-radius: 16px;
  background: var(--bot);
  border: 1px solid var(--line);
  animation: rise 0.28s ease;
  overflow-wrap: anywhere;
}
.msg.user {
  align-self: flex-end;
  background: var(--user);
  border-bottom-right-radius: 6px;
}
.msg.assistant { align-self: flex-start; border-bottom-left-radius: 6px; }
.msg p:first-child { margin-top: 0; }
.msg p:last-child { margin-bottom: 0; }
.msg pre { position: relative; padding-top: 36px; overflow: auto; }
.copy {
  position: absolute;
  top: 6px;
  right: 6px;
  width: auto;
  padding: 4px 8px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #10151c;
  font-size: 12px;
}
.msg img, #preview img { max-width: min(100%, 420px); border-radius: 12px; display: block; }
#preview { padding: 0 12px 8px; color: var(--muted); }
#preview img { margin-bottom: 6px; }

#composer {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  padding: 10px 12px 12px calc(12px + var(--safe-l));
  border-top: 1px solid var(--line);
}
#attach, #send { width: auto; flex: 0 0 auto; margin: 0; }
#attach {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  font-size: 24px;
  line-height: 1;
  background: var(--bg-raise);
}
textarea {
  flex: 1;
  min-height: 44px;
  max-height: 140px;
  resize: none;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #10151c;
  padding: 10px 12px;
}
#send { padding: 12px 16px; }
.audit-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 12px 8px calc(12px + var(--safe-l));
}
.audit-form input, .audit-form textarea, #audit-run {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #10151c;
  padding: 12px 14px;
}
#audit-run {
  background: var(--accent);
  color: #1a1208;
  border: 0;
  font-weight: 650;
}
#audit-run:disabled { opacity: 0.6; }
#audit-wait {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 12px 0 calc(12px + var(--safe-l));
  color: var(--text);
}
.bar {
  height: 8px;
  border-radius: 99px;
  background: #10151c;
  border: 1px solid var(--line);
  overflow: hidden;
}
#audit-bar {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.35s ease;
}
#audit-step { margin: 0; font-size: 14px; }
#audit-pct { color: var(--accent); font-weight: 700; }
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
#audit-log {
  flex: 1;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 12px 8px calc(12px + var(--safe-l));
}
#audit-log pre {
  margin: 0;
  white-space: pre-wrap;
  background: #10151c;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 13px;
  line-height: 1.45;
}
@keyframes spin { to { transform: rotate(360deg); } }

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

@media (min-width: 900px) {
  #app { grid-template-columns: 300px 1fr; grid-template-rows: auto 1fr; }
  .topbar { grid-column: 2; }
  #menu-btn, #close-drawer, #backdrop { display: none !important; }
  #drawer {
    position: static;
    transform: none;
    width: auto;
    grid-row: 1 / span 2;
    border-right: 1px solid var(--line);
  }
  main { grid-column: 2; }
  #log { padding-left: 28px; padding-right: 28px; }
  #composer { padding-left: 28px; padding-right: 28px; }
}