/* allsmart chat — Design 1:1 am allsmart.gmbh-System orientiert:
   monochrom, linienbasiert (1px borders, hover verstaerkt die Linie),
   system-fonts, auto dark/light. Keine Farbflaechen. Naeher an ollama.com. */
:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #888888;
  --text-secondary: #555555;
  --text-tertiary: #666666;
  --border: #e5e5e5;
  --border-hover: #1a1a1a;
  --card-bg: #ffffff;
  --subtle-bg: #f8f8f8;
  --logo-box: #1a1a1a;
  --logo-mark: #ffffff;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, monospace;
  --radius: 8px;
  --radius-lg: 12px;
  --sidebar-w: 264px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d0d;
    --fg: #f5f5f5;
    --muted: #888888;
    --text-secondary: #b0b0b0;
    --text-tertiary: #999999;
    --border: #2a2a2a;
    --border-hover: #f5f5f5;
    --card-bg: #161616;
    --subtle-bg: #262626;
    --logo-box: #f5f5f5;
    --logo-mark: #161616;
  }
}

* { box-sizing: border-box; }
html { color-scheme: light dark; }  /* native Controls (Textarea/Select/Scrollbar) folgen dem Theme */
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font);
  color: var(--fg);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }

/* --- Brand-Mark (allsmart Firmenicon: Knoten/Hub) ------------------------- */
.brand-mark { width: 22px; height: 22px; flex: 0 0 22px; color: var(--fg); display: block; }
.brand-mark.lg { width: 40px; height: 40px; flex-basis: 40px; }
.wordmark { font-weight: 600; letter-spacing: -0.01em; }
.wordmark .dim { color: var(--muted); font-weight: 500; }

/* --- Login ---------------------------------------------------------------- */
.login-body { display: grid; place-items: center; min-height: 100dvh; padding: 24px; }
.login-card {
  width: min(92vw, 360px);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
}
.login-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
.login-card h1 { font-size: 1.25rem; font-weight: 600; margin: 0 0 18px; letter-spacing: -0.01em; }
.login-card label { display: block; font-size: .85rem; color: var(--text-secondary); margin-bottom: 7px; }
.login-card input {
  width: 100%; padding: 11px 13px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--subtle-bg); outline: none;
  transition: border-color .15s ease;
}
.login-card input:focus { border-color: var(--border-hover); }
.login-card button {
  width: 100%; margin-top: 18px; padding: 11px; cursor: pointer; font-weight: 600;
  background: var(--fg); color: var(--bg); border: 1px solid var(--fg); border-radius: var(--radius);
  transition: opacity .15s ease;
}
.login-card button:hover { opacity: .85; }
.login-error { color: var(--fg); font-size: .85rem; margin: 0 0 4px; padding: 8px 11px; border: 1px solid var(--border); border-radius: var(--radius); }

/* --- App-Shell ------------------------------------------------------------ */
#app { display: flex; height: 100dvh; overflow: hidden; }

#sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w);
  background: var(--bg);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: margin-left .2s ease;
}
#app.sidebar-collapsed #sidebar { margin-left: calc(-1 * var(--sidebar-w)); }
.sidebar-head { display: flex; align-items: center; gap: 10px; padding: 16px 16px 12px; }
.sidebar-head .wordmark { flex: 1; font-size: .95rem; }

.btn-new {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin: 4px 12px 8px; padding: 9px 12px; cursor: pointer;
  background: transparent; color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--radius);
  font-size: .9rem; font-weight: 500; transition: border-color .15s ease;
}
.btn-new:hover { border-color: var(--border-hover); }
.btn-new .plus { font-size: 1.05rem; line-height: 1; margin-top: -1px; }

.conv-list { flex: 1; overflow-y: auto; padding: 4px 8px; }
.conv-item {
  display: flex; align-items: center; gap: 6px; padding: 8px 10px; border-radius: var(--radius);
  cursor: pointer; color: var(--text-secondary); font-size: .9rem;
  border: 1px solid transparent; transition: color .12s ease, border-color .12s ease;
}
.conv-item:hover { color: var(--fg); border-color: var(--border); }
.conv-item.active { color: var(--fg); border-color: var(--border); background: var(--subtle-bg); }
.conv-item .conv-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-item .conv-actions { display: none; gap: 1px; }
.conv-item:hover .conv-actions { display: flex; }
.conv-actions button { border: none; background: none; cursor: pointer; color: var(--muted); padding: 2px 4px; border-radius: 4px; font-size: .8rem; }
.conv-actions button:hover { color: var(--fg); }

.sidebar-foot { padding: 10px 12px; border-top: 1px solid var(--border); }
.btn-logout {
  width: 100%; padding: 8px; cursor: pointer; text-align: left;
  background: none; border: none; color: var(--muted); font-size: .85rem; border-radius: var(--radius);
}
.btn-logout:hover { color: var(--fg); }

#main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
#topbar {
  display: flex; align-items: center; gap: 12px; padding: 13px 20px;
  border-bottom: 1px solid var(--border);
}
.icon-btn { border: none; background: none; cursor: pointer; font-size: 1.15rem; color: var(--text-secondary); padding: 2px 4px; }
.icon-btn:hover { color: var(--fg); }
.conv-title { flex: 1; font-weight: 600; font-size: .95rem; letter-spacing: -0.01em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#model-select {
  padding: 6px 26px 6px 11px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>") no-repeat right 9px center;
  cursor: pointer; font-size: .85rem; color: var(--text-secondary); -webkit-appearance: none; appearance: none;
}
#model-select:hover { border-color: var(--border-hover); color: var(--fg); }

.messages { flex: 1; overflow-y: auto; padding: 28px 0; }
.empty-state { text-align: center; margin: 16vh auto; color: var(--muted); max-width: 420px; padding: 0 20px; }
.empty-state .brand-mark { margin: 0 auto 18px; color: var(--fg); }
.empty-state h2 { color: var(--fg); font-weight: 600; font-size: 1.3rem; margin: 0 0 6px; letter-spacing: -0.01em; }
.empty-state p { margin: 0; font-size: .92rem; }

.msg { max-width: 760px; margin: 0 auto; padding: 14px 24px; display: flex; gap: 14px; }
.msg .avatar {
  flex: 0 0 26px; height: 26px; width: 26px; border-radius: var(--radius); position: relative;
  display: grid; place-items: center; font-size: .72rem; font-weight: 600; color: var(--muted);
}
.msg.user .avatar { border: 1px solid var(--border); }
.msg.assistant .avatar { color: var(--fg); }
.msg.assistant .avatar svg { width: 22px; height: 22px; }
.msg .msg-col { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.msg .bubble { min-width: 0; padding-top: 2px; }
.msg .bubble > *:first-child { margin-top: 0; }
.msg .bubble > *:last-child { margin-bottom: 0; }

/* Markdown */
.bubble p { margin: .6em 0; }
.bubble h1, .bubble h2, .bubble h3 { margin: 1em 0 .4em; line-height: 1.3; font-weight: 600; letter-spacing: -0.01em; }
.bubble h1 { font-size: 1.35rem; } .bubble h2 { font-size: 1.18rem; } .bubble h3 { font-size: 1.04rem; }
.bubble ul, .bubble ol { margin: .5em 0; padding-left: 1.4em; }
.bubble li { margin: .25em 0; }
.bubble a { color: var(--fg); text-decoration: underline; text-underline-offset: 2px; text-decoration-color: var(--muted); }
.bubble a:hover { text-decoration-color: var(--fg); }
.bubble code { font-family: var(--mono); font-size: .86em; background: var(--subtle-bg); border: 1px solid var(--border); padding: .08em .36em; border-radius: 5px; }
.bubble pre { background: var(--subtle-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; overflow-x: auto; margin: .7em 0; }
.bubble pre code { background: none; border: none; padding: 0; font-size: .84em; }
.bubble blockquote { border-left: 2px solid var(--border); margin: .6em 0; padding-left: 1em; color: var(--text-secondary); }
.bubble table { border-collapse: collapse; margin: .7em 0; display: block; overflow-x: auto; }
.bubble th, .bubble td { border: 1px solid var(--border); padding: 6px 11px; text-align: left; }
.bubble hr { border: none; border-top: 1px solid var(--border); margin: 1.1em 0; }

.cursor::after { content: "▍"; color: var(--fg); animation: blink 1.05s steps(2) infinite; margin-left: 1px; }
@keyframes blink { 50% { opacity: 0; } }

.composer {
  display: flex; align-items: flex-end; gap: 8px; max-width: 760px; width: 100%;
  margin: 0 auto; padding: 10px 24px 22px;
}
.composer-inner {
  flex: 1; display: flex; align-items: flex-end; gap: 6px;
  border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--bg);
  padding: 6px 6px 6px 14px; transition: border-color .15s ease;
}
.composer-inner:focus-within { border-color: var(--border-hover); }
.composer textarea {
  flex: 1; resize: none; max-height: 220px; padding: 6px 0; line-height: 1.5;
  border: none; background: transparent; color: var(--fg); outline: none;
}
#send {
  flex: 0 0 32px; height: 32px; width: 32px; cursor: pointer;
  background: var(--fg); color: var(--bg); border: none; border-radius: var(--radius);
  font-size: 1rem; line-height: 1; transition: opacity .15s ease;
}
#send:hover { opacity: .85; }
#send:disabled { background: var(--border); color: var(--muted); cursor: default; }

.error-line { max-width: 760px; margin: 4px auto; padding: 8px 24px; color: var(--text-secondary); font-size: .88rem; }

/* Web-Tool-Aktivität (search/fetch/…) */
.tool-status {
  display: inline-flex; align-items: center; gap: 8px; margin: 4px 0 10px;
  padding: 6px 11px; border: 1px solid var(--border); border-radius: 999px;
  color: var(--text-secondary); font-size: .82rem; max-width: 100%;
}
.tool-status .t-label { font-family: var(--mono); color: var(--fg); }
.tool-status .t-arg { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tool-status .spinner {
  width: 11px; height: 11px; flex: 0 0 11px; border-radius: 50%;
  border: 1.5px solid var(--border); border-top-color: var(--fg); animation: spin .7s linear infinite;
}
.tool-status.done .spinner { border: none; width: auto; height: auto; animation: none; color: var(--muted); }
.tool-status.done .spinner::before { content: "✓"; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 720px) {
  #sidebar { position: absolute; z-index: 20; height: 100%; }
  #app:not(.sidebar-collapsed) #main::after {
    content: ""; position: absolute; inset: 0; background: rgba(0,0,0,.3); z-index: 10;
  }
}