/* Tek renk, sert kontrast, sansür bantları motifi. Okunabilirlik için gövde metni
   yüksek kontrastlı sans-serif, etiketler monospace. */
:root {
  --bg: #0b0b0b;
  --text: #ececec;
  --muted: #a3a3a3;
  --dim: #6b6b6b;
  --line: #2b2b2b;
  --soft: #151515;
  --ink: #0b0b0b;       /* beyaz bantların üstündeki yazı */
  --bar: #ececec;       /* sansür bandı */
  --danger: #ff6b5e;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--bar); color: var(--ink); }
[hidden] { display: none !important; }

button, input, textarea { font: inherit; color: inherit; }
.label, button {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
button {
  background: none;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 7px 14px;
  cursor: pointer;
  color: var(--text);
}
button:hover:not(:disabled) { border-color: var(--text); }
button.solid { background: var(--bar); color: var(--ink); border-color: var(--bar); font-weight: 500; }
button.solid:hover:not(:disabled) { background: #ffffff; }
button:disabled { opacity: .35; cursor: default; }
button.plain { border: 0; padding: 0; color: var(--muted); }
button.plain:hover { color: var(--text); }
a { color: var(--text); text-underline-offset: 3px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.error-text { color: var(--danger); font-size: 14px; min-height: 20px; }

/* Sansür bandı */
.bar { display: block; height: 14px; background: var(--bar); }
.redact { display: flex; flex-direction: column; gap: 9px; }

/* Giriş */
.login { min-height: 100%; display: flex; align-items: center; justify-content: center; padding: 16px; }
.login-box { width: 100%; max-width: 320px; display: flex; flex-direction: column; gap: 12px; }
.login-box .redact { margin-bottom: 28px; }
.login-box .label { color: var(--muted); }
.login-box input {
  padding: 10px 12px; border: 1px solid var(--line); background: var(--soft); outline: none; border-radius: 0;
}
.login-box input:focus { border-color: var(--text); }

/* Yerleşim */
.app { display: flex; height: 100dvh; }
.sidebar {
  width: 260px; flex-shrink: 0; border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 14px; padding: 18px 14px; background: var(--bg);
}
.side-head { display: flex; justify-content: space-between; align-items: center; min-height: 20px; }
/* Sol üst yazı: üstü çizili, ortası karartılmış */
.wordmark {
  position: relative; display: inline-block;
  font-family: var(--sans); font-weight: 700; font-size: 20px; letter-spacing: .14em;
  color: var(--text); line-height: 1; white-space: nowrap; user-select: none; padding: 2px 0;
}
/* kelimenin ortasından geçen sansür bandı; harfler okunur kalır */
.wordmark::after {
  content: ""; position: absolute; left: -6px; right: -6px; top: 50%;
  height: 2px; margin-top: -1px; background: var(--text);
}
#newChat { width: 100%; }
.chat-list { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 1px; }
.chat-item {
  display: flex; align-items: center; gap: 6px; padding: 7px 8px;
  cursor: pointer; font-size: 14px; color: var(--muted);
}
.chat-item:hover { color: var(--text); background: var(--soft); }
.chat-item.active { background: var(--bar); color: var(--ink); }
.chat-item .t { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-item .del { border: 0; padding: 0 2px; font-size: 10px; color: inherit; opacity: .6; visibility: hidden; }
.chat-item:hover .del { visibility: visible; }

.server {
  border-top: 1px solid var(--line); padding-top: 14px;
  display: flex; flex-direction: column; gap: 6px; align-items: flex-start;
}
.server .label { display: flex; align-items: center; gap: 8px; }
.server-actions { display: flex; gap: 8px; margin: 4px 0; }
.server-actions:not(:has(button:not([hidden]))) { display: none; }
.dot { display: inline-block; width: 8px; height: 8px; background: var(--dim); }
.dot.ok { background: var(--text); }
.dot.warn { background: var(--muted); animation: blink 1.2s steps(2) infinite; }
.dot.err { background: var(--danger); }
@keyframes blink { 50% { opacity: 0; } }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar { display: flex; align-items: center; gap: 14px; padding: 13px 22px; border-bottom: 1px solid var(--line); }
.chat-title { flex: 1; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Mesajlar */
.messages { flex: 1; overflow-y: auto; padding: 28px 20px; }
.msg { max-width: 720px; margin: 0 auto 28px; }
.msg.user { display: flex; justify-content: flex-end; }
.msg.user .bubble {
  background: var(--bar); color: var(--ink); padding: 8px 14px; max-width: 85%;
  white-space: pre-wrap; word-wrap: break-word;
}
.msg .content > :first-child { margin-top: 0; }
.msg .content > :last-child { margin-bottom: 0; }
.msg .content p { margin: 0 0 14px; }
.msg .content h1, .msg .content h2, .msg .content h3 { font-size: 1.1em; margin: 22px 0 10px; }
.msg .content a { color: var(--text); }
.msg .content pre {
  background: var(--soft); border: 1px solid var(--line); padding: 12px 14px; overflow-x: auto; position: relative;
}
.msg .content code { font-family: var(--mono); font-size: 13.5px; }
.msg .content :not(pre) > code { background: var(--soft); border: 1px solid var(--line); padding: 0 4px; }
.msg .content table { border-collapse: collapse; display: block; overflow-x: auto; font-size: 15px; }
.msg .content th, .msg .content td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; }
.msg .content blockquote { margin: 0 0 14px; padding-left: 12px; border-left: 3px solid var(--bar); color: var(--muted); }
.msg .content hr { border: 0; height: 6px; width: 30%; background: var(--line); margin: 22px 0; }
.copy-btn { position: absolute; top: 6px; right: 6px; font-size: 10px; padding: 2px 6px; background: var(--bg); }

/* Düşünce: kapalıyken sansürlü */
.thinking { margin-bottom: 14px; }
.thinking summary {
  cursor: pointer; list-style: none; display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
}
.thinking summary::-webkit-details-marker { display: none; }
.thinking summary::before { content: ""; width: 90px; height: 9px; background: var(--dim); }
.thinking[open] summary::before { background: var(--line); }
.thinking .think-text {
  white-space: pre-wrap; max-height: 300px; overflow-y: auto; margin-top: 10px;
  padding-left: 12px; border-left: 1px solid var(--line); color: var(--muted); font-size: 14px;
}
.cursor::after { content: ""; display: inline-block; width: 9px; height: 1em; background: var(--text); vertical-align: -2px; animation: blink 1s steps(2) infinite; }
.msg .meta { color: var(--dim); font-family: var(--mono); font-size: 11px; margin-top: 8px; display: flex; gap: 14px; }
.msg .meta button { border: 0; padding: 0; font-size: 11px; color: var(--dim); }
.msg .meta button:hover { color: var(--text); }
.msg .err { color: var(--danger); }
.empty { max-width: 320px; margin: 22vh auto 0; }
.empty .redact { margin-bottom: 18px; }
.empty .bar { height: 12px; }

/* Mesaj kutusu */
.composer { border-top: 1px solid var(--line); padding: 14px 20px calc(14px + env(safe-area-inset-bottom)); }
.composer textarea {
  display: block; width: 100%; max-width: 720px; margin: 0 auto; resize: none;
  border: 1px solid var(--line); background: var(--soft); padding: 10px 12px; border-radius: 0;
  max-height: 220px; outline: none;
}
.composer textarea:focus { border-color: var(--muted); }
.composer textarea::placeholder { color: var(--dim); }
.composer-bar { max-width: 720px; margin: 10px auto 0; display: flex; align-items: center; gap: 10px; }
.composer-bar label { margin-right: auto; display: flex; align-items: center; gap: 8px; cursor: pointer; color: var(--muted); }
.composer-bar input[type=checkbox] { accent-color: var(--bar); }

.only-mobile { display: none; }
.scrim { display: none; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--line); }
::-webkit-scrollbar-track { background: transparent; }

@media (max-width: 760px) {
  .only-mobile { display: inline; }
  .sidebar { position: fixed; inset: 0 auto 0 0; z-index: 20; transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: none; }
  .scrim.show { display: block; position: fixed; inset: 0; z-index: 10; background: rgba(0,0,0,.75); }
  .topbar { padding: 12px 16px; }
  .topbar .wordmark { display: inline-block; font-size: 16px; margin-left: 4px; }
  .topbar .wordmark::after { height: 2px; margin-top: -1px; }
  .chat-title { font-size: 14px; color: var(--muted); }
  #modelName { display: none; }
  .messages { padding: 20px 16px; }
}