:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --border: #dce1e6;
  --text: #1c2530;
  --muted: #6b7785;
  --sidebar: #3A8AC3;
  --green: #60e6be;
  --red: #ca0d59;
  --orange: #fb9680;
  --userbubble: #e8f1fb;
  --toolbg: #f0f2f4;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}
:root[data-theme="dark"] {
  --bg: #10151b;
  --panel: #1a222c;
  --border: #2b3745;
  --text: #e6ebf0;
  --muted: #8fa0b0;
  --userbubble: #223247;
  --toolbg: #212b36;
  --shadow: 0 1px 3px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  display: flex; flex-direction: column;
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--text);
}

/* Topbar */
#topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 16px; background: var(--panel);
  border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 8px; }
.brand strong { color: var(--sidebar); font-size: 17px; }
.brand .sub { color: var(--muted); font-size: 13px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); }
.dot.ok { background: var(--green); }
.dot.bad { background: var(--red); }
.modelinfo { display: flex; gap: 8px; margin-left: auto; flex-wrap: wrap; }
.chip {
  font-size: 12px; padding: 3px 10px; border-radius: 12px;
  background: var(--toolbg); color: var(--muted); border: 1px solid var(--border);
  white-space: nowrap;
}
.chip.disabled { opacity: .75; cursor: not-allowed; }
.iconbtn {
  background: transparent; border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; width: 36px; height: 36px; cursor: pointer; font-size: 16px;
}
.iconbtn:disabled { opacity: .4; cursor: not-allowed; }

/* Chat */
#chat {
  flex: 1; overflow-y: auto; padding: 20px 16px;
  display: flex; flex-direction: column; gap: 14px;
  max-width: 900px; width: 100%; margin: 0 auto;
}
.msg { display: flex; flex-direction: column; max-width: 85%; }
.msg.user { align-self: flex-end; align-items: flex-end; }
.msg.assistant { align-self: flex-start; align-items: flex-start; }
.bubble {
  padding: 10px 14px; border-radius: 14px; white-space: pre-wrap; word-wrap: break-word;
  background: var(--panel); border: 1px solid var(--border); box-shadow: var(--shadow);
}
.msg.user .bubble { background: var(--userbubble); }
.role { font-size: 11px; color: var(--muted); margin: 0 6px 3px; text-transform: uppercase; letter-spacing: .5px; }

/* Tool-/Status-Zeilen */
.steps { display: flex; flex-direction: column; gap: 4px; margin: 4px 0 2px; }
.step {
  font-size: 12px; color: var(--muted); background: var(--toolbg);
  border-left: 3px solid var(--sidebar); padding: 4px 10px; border-radius: 4px;
}
.step.tool { border-left-color: var(--orange); }
.step.err { border-left-color: var(--red); color: var(--red); }
.step .tname { font-weight: 600; color: var(--text); }
.cursor::after { content: "▌"; color: var(--sidebar); animation: blink 1s steps(2) infinite; }
@keyframes blink { 0%,50% {opacity:1;} 50.1%,100% {opacity:0;} }

/* Composer */
#composer {
  border-top: 1px solid var(--border); background: var(--panel);
  padding: 10px 16px; max-width: 900px; width: 100%; margin: 0 auto;
}
.attachbar { padding: 6px 0; }
.attachbar .hint { font-size: 12px; color: var(--orange); }
.inputrow { display: flex; gap: 8px; align-items: flex-end; }
#msg {
  flex: 1; resize: none; max-height: 180px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 10px; font: inherit;
  background: var(--bg); color: var(--text);
}
button.primary {
  background: var(--sidebar); color: #fff; border: none; border-radius: 10px;
  padding: 0 20px; height: 42px; font-weight: 600; cursor: pointer;
}
button.primary:disabled { opacity: .5; cursor: not-allowed; }
.foothint { font-size: 11px; color: var(--muted); margin-top: 6px; text-align: center; }

/* Nutzer-Bereich / Auth */
.userarea { display: flex; align-items: center; gap: 8px; }
#chip-user { max-width: 220px; overflow: hidden; text-overflow: ellipsis; }

/* Login-Box */
.loginbox {
  max-width: 420px; margin: 40px auto; background: var(--panel);
  border: 1px solid var(--border); border-radius: 14px; padding: 24px;
  box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 12px;
}
.loginbox h2 { margin: 0 0 4px; color: var(--sidebar); }
.loginbox label { font-size: 13px; color: var(--muted); }
.loginbox input {
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px;
  font: inherit; background: var(--bg); color: var(--text);
}
.btnlink { display: inline-block; text-decoration: none; text-align: center;
  padding: 10px 20px; height: auto; line-height: 1.4; }
.devwarn { font-size: 12px; color: var(--orange); font-weight: 600; }
.loginerr { color: var(--red); font-size: 13px; }
/* Login-Schritte als saubere Spalte, Felder voll breit (E-Mail komplett sichtbar) */
.loginbox #step-email, .loginbox #step-code, .loginbox #devbox { display: flex; flex-direction: column; gap: 8px; }
.loginbox #step-email p, .loginbox #step-code p, .loginbox #devbox p { margin: 0 0 4px; }
.loginbox input { width: 100%; box-sizing: border-box; }
.loginbox #step-email button.primary,
.loginbox #step-code button.primary,
.loginbox #devbox button.primary { width: 100%; margin-top: 6px; }

/* Profil-Dialog */
#profiledlg {
  border: 1px solid var(--border); border-radius: 14px; padding: 0;
  background: var(--panel); color: var(--text); box-shadow: var(--shadow);
  max-width: 440px; width: 92%;
}
#profiledlg::backdrop { background: rgba(0,0,0,.4); }
.profileform { display: flex; flex-direction: column; gap: 8px; padding: 20px; }
.profileform h3 { margin: 0; color: var(--sidebar); }
.profileform .hint { font-size: 12px; color: var(--muted); margin: 0 0 6px; }
.profileform label { font-size: 13px; color: var(--muted); margin-top: 6px; }
.profileform input {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 10px;
  font: inherit; background: var(--bg); color: var(--text);
}
.setflag { font-size: 11px; color: var(--muted); }
.profileerr { color: var(--red); font-size: 13px; margin-top: 6px; }
.profilebtns { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.profilebtns .iconbtn { width: auto; padding: 0 14px; }

@media (max-width: 640px) {
  .brand .sub { display: none; }
  .msg { max-width: 95%; }
  #chip-user { max-width: 120px; }
}

.linkbtn{background:none;border:none;color:#3A8AC3;cursor:pointer;text-decoration:underline;padding:6px 0;font:inherit;}