/* ───────── 테마 토큰 ───────── */
:root {
  --bg: #ffffff;
  --bg-2: #f7f7f8;
  --bg-3: #ececf1;
  --sb-bg: #f9f9f9;
  --text: #0d0d0d;
  --text-2: #5d5d5d;
  --text-3: #8e8e8e;
  --border: #e3e3e3;
  --accent: #10a37f;
  --accent-text: #ffffff;
  --user-bubble: #fff3c4;
  --code-bg: #0d1117;
  --danger: #d33;
  --shadow: 0 2px 12px rgba(0,0,0,.08);
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "D2Coding", monospace;
}
:root[data-theme="dark"] {
  --bg: #212121;
  --bg-2: #2f2f2f;
  --bg-3: #3a3a3a;
  --sb-bg: #171717;
  --text: #ececec;
  --text-2: #b4b4b4;
  --text-3: #8a8a8a;
  --border: #3a3a3a;
  --user-bubble: #4a4020;
  --shadow: 0 2px 12px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font);
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
button { font-family: inherit; cursor: pointer; }
svg { width: 20px; height: 20px; }

#app { display: flex; height: 100dvh; overflow: hidden; }

/* ───────── 사이드바 ───────── */
#sidebar {
  width: 300px;
  flex-shrink: 0;
  background: var(--sb-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: row;
  overflow: hidden;
  transition: width .2s ease, transform .2s ease;
}
#sidebar.sb-collapsed { width: 28px; }
#sb-body {
  flex: 1; display: flex; flex-direction: column; min-width: 0; overflow: hidden;
}
.sb-collapse-btn {
  width: 28px; flex-shrink: 0;
  display: flex; flex-direction: column; align-items: center;
  justify-content: flex-start; padding: 14px 0;
  background: none; border: none; border-left: 1px solid var(--border);
  cursor: pointer; color: var(--text-3);
}
.sb-collapse-btn:hover { color: var(--text); background: var(--bg-3); }
.sb-col-arrow { font-size: 9px; transition: transform .2s ease; }
#sidebar.sb-collapsed .sb-col-arrow { transform: rotate(180deg); }
.sb-col-label {
  writing-mode: vertical-lr;
  font-size: 11px; font-weight: 600; letter-spacing: 1px; color: var(--text-2);
  margin-top: 4px;
}
.no-mobile { display: inline-flex; }
.sb-top { display: flex; gap: 6px; padding: 12px; align-items: center; }
.btn-new {
  flex: 1;
  display: flex; align-items: center; gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font-size: 14px;
}
.btn-new:hover { background: var(--bg-3); }
.conv-list { flex: 1; overflow-y: auto; padding: 4px 8px; }
.conv-item {
  display: flex; align-items: center;
  position: relative;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
}
.conv-item:hover { background: var(--bg-3); }
.conv-item.active { background: var(--bg-3); font-weight: 500; }
/* 제목을 최대한 길게 보여줌 — 버튼은 위에 떠 있는 오버레이라 겹쳐도 무방(요청에 따름) */
.conv-item .title { width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-item .edit-title, .conv-item .del, .conv-item .share {
  position: absolute; top: 50%; transform: translateY(-50%);
  opacity: 0; border: 0; background: var(--bg-2); color: var(--text-3);
  font-size: 13px; padding: 2px 4px; border-radius: 4px; box-shadow: 0 0 0 1px var(--border);
}
.conv-item .del { right: 6px; }
.conv-item .edit-title { right: 28px; }
.conv-item .share { right: 50px; }
.conv-item:hover .edit-title, .conv-item.active .edit-title,
.conv-item:hover .del, .conv-item.active .del,
.conv-item:hover .share, .conv-item.active .share { opacity: 1; }
.conv-item .edit-title:hover, .conv-item .share:hover { color: var(--accent); background: var(--bg-3); }
.conv-item .del:hover { color: var(--danger); background: var(--bg-3); }
.conv-item .share.is-shared { opacity: 1; color: var(--accent); }
.conv-item .title-edit {
  flex: 1; min-width: 0; font: inherit; font-size: 14px;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--accent); border-radius: 5px;
  padding: 1px 6px; outline: none;
  margin-right: 66px; /* 오른쪽에 떠 있는 공유/편집/삭제 버튼(3개)에 가려지지 않게 */
}
.conv-section { font-size: 11px; color: var(--text-3); padding: 12px 10px 4px; font-weight: 600; }

/* 사이드바 내 모바일 전용 상단 헤더 */
.sb-mobile-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.sb-mobile-title { font-size: 14px; font-weight: 600; color: var(--text-2); }

/* 사이드바 내 모바일 전용 모델 설정 */
.sb-model-settings {
  padding: 8px 12px 10px;
  border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 6px;
}
.sb-model-settings select, .sb-model-settings input {
  width: 100%; padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg-2); color: var(--text); font: inherit; font-size: 14px;
}
.sb-model-row {
  display: flex; align-items: center; gap: 6px;
}
.sb-model-row select { flex: 1; min-width: 0; }
.sb-set-lbl { font-size: 12px; color: var(--text-3); flex-shrink: 0; }
.sb-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; border-top: 1px solid var(--border);
}
.user-chip { font-size: 11px; color: var(--text-3); font-family: var(--mono); }

.icon-btn {
  border: 0; background: transparent; color: var(--text-2);
  width: 36px; height: 36px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.icon-btn:hover { background: var(--bg-3); color: var(--text); }
.icon-btn.active { background: var(--accent); color: var(--accent-text); }
.icon-btn.active:hover { background: var(--accent); color: var(--accent-text); }
.only-mobile { display: none; }
#sb-backdrop { display: none; }

/* ───────── 메인 ───────── */
#main { flex: 1; display: flex; flex-direction: column; min-width: 0; position: relative; }
#topbar {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: relative;
}
.topbar-title {
  position: absolute; left: 50%; transform: translateX(-50%);
  font-size: 20px; font-weight: 700; color: var(--text); pointer-events: none;
  white-space: nowrap;
}
.model-wrap { display: flex; align-items: center; gap: 6px; max-width: 420px; }
.topbar select, .topbar input, #topbar select, #topbar input {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg-2); color: var(--text); font: inherit; font-size: 14px;
}
#model-select { font-weight: 600; max-width: 360px; }
#model-select:disabled { opacity: 1; color: var(--text); background: transparent; border-color: transparent; appearance: none; -webkit-appearance: none; padding-right: 2px; }
.lock { font-size: 13px; color: var(--text-3); }
.effort-wrap { display: flex; align-items: center; gap: 6px; }
.effort-lbl { font-size: 12px; color: var(--text-3); white-space: nowrap; }
#effort-select { font-size: 13px; padding: 5px 8px; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.status-pill {
  font-size: 12px; color: var(--text-2); background: var(--bg-2);
  padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border);
}

#chat-scroll { flex: 1; overflow-y: auto; scroll-behavior: smooth; }
.messages { max-width: 800px; margin: 0 auto; padding: 24px 16px 8px; }

/* 환영 화면 */
.welcome { max-width: 760px; margin: 10vh auto 0; padding: 0 16px; text-align: center; }
.welcome-logo { font-size: 40px; color: var(--accent); }
.welcome h1 { font-size: 26px; font-weight: 600; margin: 8px 0 28px; }
.suggestions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.sugg {
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text-2); padding: 10px 14px; border-radius: 12px; font-size: 14px;
}
.sugg:hover { background: var(--bg-2); color: var(--text); }

/* ───────── 메시지 ───────── */
.msg { display: flex; gap: 12px; margin-bottom: 26px; }
.msg.user { justify-content: flex-end; }
.msg.user > div { max-width: 78%; display: flex; flex-direction: column; align-items: flex-end; }
.user-body { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.msg.user.editing > div { max-width: 92%; width: 92%; }
.msg.user .bubble {
  background: var(--user-bubble);
  padding: 10px 16px;
  border-radius: 20px;
  width: fit-content;
  white-space: pre-wrap;
  word-break: break-word;
}
.msg .avatar {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); border: 2px solid var(--accent); color: var(--accent); font-size: 15px;
  margin-top: 2px; overflow: hidden;
}
.msg .avatar img {
  width: 20px; height: 20px; border-radius: 3px; object-fit: contain;
}
.msg .avatar svg { width: 18px; height: 18px; flex-shrink: 0; }
.msg.assistant .body { flex: 1; min-width: 0; }
.stream-timer {
  font-size: 12px; color: var(--text-3);
  margin-top: 6px; font-family: var(--mono);
}
.msg-meta { display: flex; gap: 6px; margin-top: 6px; }
.msg-meta button {
  border: 0; background: none; color: var(--text-3); font-size: 12px;
  padding: 3px 6px; border-radius: 6px;
}
.msg-meta button:hover { background: var(--bg-3); color: var(--text); }
.msg-meta .elapsed { font-size: 12px; color: var(--text-3); padding: 3px 6px; }

.msg-actions {
  display: flex; gap: 2px; opacity: 0; transition: opacity .15s;
}
.msg.user:hover .msg-actions { opacity: 1; }
.messages.streaming .msg-actions { display: none; }
.edit-msg, .del-msg {
  border: 0; background: none; color: var(--text-3);
  font-size: 13px; padding: 2px 6px; border-radius: 6px; cursor: pointer;
}
.edit-msg:hover { background: var(--bg-3); color: var(--text); }
.del-msg:hover { background: var(--bg-3); color: var(--danger); }
.msg-edit-wrap { width: 100%; display: flex; flex-direction: column; gap: 6px; margin-top: 4px; }
.msg-edit-ta {
  width: 100%; min-height: 60px; padding: 10px 14px;
  border: 1px solid var(--accent); border-radius: 14px;
  background: var(--bg-2); color: var(--text);
  font: inherit; font-size: 15px; line-height: 1.5;
  resize: none; outline: none;
}
.msg-edit-btns { display: flex; gap: 6px; justify-content: flex-end; }
.msg-edit-btns button {
  padding: 6px 14px; border-radius: 10px; border: 1px solid var(--border);
  font: inherit; font-size: 13px; cursor: pointer;
}
.msg-edit-send { background: var(--accent); color: #fff; border-color: var(--accent); }
.msg-edit-cancel { background: var(--bg-2); color: var(--text-2); }

.attachments { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; margin-bottom: 6px; }
.attach-chip {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--border); border-radius: 10px; padding: 6px 10px;
  font-size: 13px; background: var(--bg-2); max-width: 260px;
}
.attach-chip .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attach-chip .dl-name { cursor: pointer; color: var(--accent); text-decoration: underline; text-decoration-style: dotted; }
.attach-chip .dl-name::after { content: ' ↓'; font-size: 10px; opacity: .7; }
.attach-chip .dl-name:hover { text-decoration-style: solid; }
.attach-chip .size { color: var(--text-3); font-size: 11px; }
.attach-chip img { width: 36px; height: 36px; object-fit: cover; border-radius: 6px; }
.attach-chip .rm { border: 0; background: none; color: var(--text-3); cursor: pointer; }
.attach-chip.uploading { opacity: .6; }
.attach-chip.error { border-color: var(--danger); color: var(--danger); }

/* 추론/도구 접힘 블록 */
.blocks { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }
details.blk {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-2);
  font-size: 13.5px;
  overflow: hidden;
}
details.blk > summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  color: var(--text-2);
}
details.blk > summary::-webkit-details-marker { display: none; }
details.blk > summary .chev { transition: transform .15s; font-size: 11px; color: var(--text-3); }
details.blk[open] > summary .chev { transform: rotate(90deg); }
details.blk > summary .lbl { font-weight: 600; }
details.blk > summary .sub {
  color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  flex: 1; min-width: 0; font-family: var(--mono); font-size: 12px;
}
details.blk .blk-body { padding: 4px 14px 12px; border-top: 1px dashed var(--border); }
details.blk.reasoning .blk-body { color: var(--text-2); white-space: pre-wrap; font-size: 13.5px; line-height: 1.55; }
details.blk.error { border-color: var(--danger); }
details.blk.error > summary { color: var(--danger); }
.blk-body h5 { margin: 10px 0 4px; font-size: 12px; color: var(--text-3); text-transform: uppercase; letter-spacing: .04em; display: flex; align-items: center; gap: 6px; }
.tool-code-copy { border: 0; background: none; color: var(--text-3); font-size: 14px; cursor: pointer; padding: 0 2px; line-height: 1; }
.tool-code-copy:hover { color: var(--text); }
.blk-body pre {
  margin: 0; padding: 10px 12px; border-radius: 8px;
  background: var(--code-bg); color: #e6edf3;
  font-family: var(--mono); font-size: 12.5px;
  white-space: pre-wrap; word-break: break-word;
  max-height: 360px; overflow: auto;
}
.blk-body .tool-out img { max-width: 100%; border-radius: 8px; margin-top: 8px; }
.spinner {
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid var(--border); border-top-color: var(--accent);
  animation: spin .8s linear infinite; flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }
.shimmer {
  background: linear-gradient(90deg, var(--text-3), var(--text), var(--text-3));
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* 마크다운 본문 */
.md { word-break: break-word; }
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md p { margin: 0 0 12px; }
.md h1, .md h2, .md h3, .md h4 { margin: 20px 0 8px; line-height: 1.3; }
.md h1 { font-size: 1.5em; } .md h2 { font-size: 1.3em; } .md h3 { font-size: 1.15em; }
.md ul, .md ol { padding-left: 24px; margin: 0 0 12px; }
.md li { margin: 3px 0; }
.md blockquote { margin: 0 0 12px; padding: 4px 14px; border-left: 3px solid var(--border); color: var(--text-2); }
.md a { color: var(--accent); }
.md img { max-width: 100%; border-radius: 10px; margin: 6px 0; display: block; cursor: zoom-in; }
.blk-body .tool-out img { cursor: zoom-in; }
.md table { border-collapse: collapse; margin: 0 0 12px; display: block; overflow-x: auto; max-width: 100%; }
.md th, .md td { border: 1px solid var(--border); padding: 6px 10px; }
.md th { background: var(--bg-2); }
.md hr { border: 0; border-top: 1px solid var(--border); margin: 16px 0; }
.md code { font-family: var(--mono); font-size: .9em; }
.md :not(pre) > code { background: var(--bg-3); padding: 2px 5px; border-radius: 5px; }
.md pre {
  position: relative; margin: 0 0 14px;
  background: var(--code-bg); border-radius: 10px;
  overflow: hidden;
}
.md pre code { display: block; padding: 14px 16px; overflow-x: auto; font-size: 13px; line-height: 1.5; background: transparent; }
.code-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 12px; background: #161b22; color: #9da5b4; font-size: 12px;
  font-family: var(--mono);
}
.code-head button { border: 0; background: none; color: #9da5b4; font-size: 12px; }
.code-head button:hover { color: #fff; }
.cursor::after {
  content: ""; display: inline-block; width: 8px; height: 15px;
  background: var(--text); margin-left: 2px; vertical-align: -2px;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ───────── 입력창 ───────── */
#composer-wrap { padding: 8px 16px 12px; background: var(--bg); }
.attach-list { max-width: 800px; margin: 0 auto 6px; display: flex; flex-wrap: wrap; gap: 6px; }
.composer {
  max-width: 800px; margin: 0 auto;
  display: flex; align-items: flex-end; gap: 6px;
  border: 1px solid var(--border);
  border-radius: 26px;
  background: var(--bg-2);
  padding: 8px 8px 8px 10px;
  box-shadow: var(--shadow);
}
.composer:focus-within { border-color: var(--text-3); }
#prompt {
  flex: 1; border: 0; background: transparent; color: var(--text);
  font: inherit; font-size: 15px; line-height: 1.5;
  resize: none; outline: none; max-height: 220px; padding: 7px 4px;
}
.send-btn {
  width: 36px; height: 36px; border-radius: 50%; border: 0;
  background: var(--text); color: var(--bg);
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.send-btn:disabled { opacity: .25; cursor: default; }
.send-btn.stop { background: var(--text); }
.composer-hint { text-align: center; font-size: 11.5px; color: var(--text-3); margin-top: 8px; }
.site-byline { display: block; width: 100%; text-align: right; font-size: 11px; color: var(--text-3); margin-top: 2px; }

/* ───────── 토스트 ───────── */
.toast {
  position: absolute; bottom: 96px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg);
  padding: 7px 16px; border-radius: 20px;
  font-size: 13px; white-space: nowrap; max-width: 80%;
  overflow: hidden; text-overflow: ellipsis;
  opacity: 0; pointer-events: none; z-index: 300;
  transition: opacity .2s ease, bottom .2s ease;
}
.toast.show { opacity: 1; bottom: 100px; }

/* ───────── 라이트박스 ───────── */
#lightbox {
  display: none; position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,.85);
  align-items: center; justify-content: center;
  cursor: zoom-out;
}
#lightbox.open { display: flex; }
#lightbox img {
  max-width: 92vw; max-height: 92vh;
  border-radius: 10px; object-fit: contain;
  cursor: default; box-shadow: 0 8px 40px rgba(0,0,0,.6);
}

/* ───────── 로그인 모달 ───────── */
.login-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
}
.login-overlay.hidden { display: none; }
.login-box {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 16px; padding: 2.4rem 2rem;
  width: min(400px, 92vw);
  box-shadow: 0 12px 40px rgba(0,0,0,.15);
  display: flex; flex-direction: column; align-items: center; gap: 1rem;
  position: relative;
}
.login-close-x {
  position: absolute; top: 12px; right: 12px;
  background: none; border: none; cursor: pointer;
  font-size: 16px; color: var(--text-3); line-height: 1;
  padding: 4px 6px; border-radius: 6px;
}
.login-close-x:hover { background: var(--bg-3); color: var(--text); }
.login-logo { font-size: 2.8rem; color: var(--accent); line-height: 1; }
.login-box h2 { margin: 0; font-size: 1.4rem; font-weight: 700; }
.login-desc { margin: 0; text-align: center; color: var(--text-2); font-size: .875rem; line-height: 1.55; }
.login-box form { display: flex; flex-direction: column; gap: .7rem; width: 100%; margin-top: .5rem; }
.login-box input {
  padding: .7rem 1rem; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font: inherit; font-size: 1rem;
  transition: border-color .15s;
}
.login-box input:focus { outline: none; border-color: var(--accent); }
.login-btns {
  display: flex; gap: .6rem; margin-top: .2rem;
}
.login-btns button {
  flex: 1; padding: .7rem; border-radius: 10px;
  border: none; font: inherit; font-size: 1rem; font-weight: 600;
  cursor: pointer; transition: opacity .15s;
}
#login-submit { background: var(--accent); color: #fff; }
#signup-submit { background: var(--bg-3); color: var(--text-1); }
.login-btns button:hover { opacity: .88; }
.login-btns button:disabled { opacity: .55; cursor: not-allowed; }
.login-error { margin: 0; color: var(--danger); font-size: .875rem; text-align: center; }
.login-skip {
  border: 0; background: none; color: var(--text-3); font: inherit; font-size: .8rem;
  cursor: pointer; text-decoration: underline; padding: 0;
}
.login-skip:hover { color: var(--text-2); }

/* ───────── 언어모델 목록 편집 다이얼로그 ───────── */
.model-edit-box {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 16px; padding: 2rem 1.8rem;
  width: min(820px, 94vw); max-height: 86vh;
  box-shadow: 0 12px 40px rgba(0,0,0,.15);
  display: flex; flex-direction: column; gap: .9rem;
  position: relative; overflow: hidden;
}
.model-edit-box h2 { margin: 0; font-size: 1.25rem; font-weight: 700; text-align: center; }
.me-section { display: flex; flex-direction: column; gap: .4rem; min-height: 0; }
.me-section-title { font-size: .8rem; font-weight: 600; color: var(--text-3); }
.me-current-list {
  display: flex; flex-direction: column; gap: 4px;
  max-height: 240px; overflow-y: auto;
  border: 1px solid var(--border); border-radius: 10px; padding: 6px;
  background: var(--bg);
}
.me-current-row {
  display: flex; align-items: center; gap: 6px;
  padding: 4px 6px; border-radius: 8px;
}
.me-current-row:hover { background: var(--bg-3); }
.me-grip {
  flex-shrink: 0; width: 18px; text-align: center; cursor: grab; user-select: none;
  color: var(--text-3); font-size: 13px; letter-spacing: -2px; line-height: 1;
  touch-action: none; padding: 6px 0;
}
.me-grip:hover { color: var(--text); }
.me-current-row.dragging { background: var(--bg-3); box-shadow: 0 2px 8px rgba(0,0,0,.25); }
.me-current-row.dragging .me-grip { cursor: grabbing; }
.me-current-row .me-label {
  border: 1px solid transparent; background: none; color: var(--text);
  font: inherit; font-size: .85rem; font-weight: 600; padding: 3px 5px; border-radius: 6px;
  width: 230px; flex-shrink: 0; box-sizing: border-box;
}
.me-current-row .me-label:hover, .me-current-row .me-label:focus {
  border-color: var(--border); background: var(--bg); outline: none;
}
.me-current-row .me-id { flex: 1; min-width: 0; font-size: .75rem; color: var(--text-3); font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.me-current-row .me-price { font-size: .72rem; color: var(--text-3); flex-shrink: 0; white-space: nowrap; }
.me-current-row .me-remove {
  border: none; background: none; color: var(--text-3); cursor: pointer;
  font-size: 13px; line-height: 1; padding: 3px 0; width: 24px; text-align: center; border-radius: 6px; flex-shrink: 0;
}
.me-current-row .me-remove:hover { background: var(--danger); color: #fff; }
.me-current-empty { color: var(--text-3); font-size: .82rem; padding: 8px 4px; text-align: center; }
#me-search {
  padding: .55rem .8rem; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font: inherit; font-size: .9rem;
}
#me-search:focus { outline: none; border-color: var(--accent); }
.me-catalog-list {
  display: flex; flex-direction: column; gap: 4px;
  max-height: 220px; overflow-y: auto;
  border: 1px solid var(--border); border-radius: 10px; padding: 6px;
  background: var(--bg);
}
.me-catalog-row {
  display: flex; align-items: center; gap: 6px;
  padding: 4px 6px; border-radius: 8px; cursor: pointer;
}
.me-catalog-row:hover { background: var(--bg-3); }
.me-catalog-row.added { opacity: .4; cursor: default; }
/* '현재 목록' 행과 같은 열 구성: 손잡이 자리 | 표시명(고정폭) | ID(남는 폭) | 가격 | 삭제 버튼 자리 */
.me-cat-sp { flex-shrink: 0; width: 18px; }
.me-cat-sp.end { width: 24px; }
.me-catalog-row .me-cat-name { flex: 0 0 230px; box-sizing: border-box; padding: 3px 6px; font-size: .85rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.me-catalog-row .me-cat-id { flex: 1; min-width: 0; font-size: .75rem; color: var(--text-3); font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.me-catalog-row .me-cat-price { font-size: .72rem; color: var(--text-3); flex-shrink: 0; white-space: nowrap; }
.me-catalog-empty { color: var(--text-3); font-size: .82rem; padding: 10px 4px; text-align: center; }
.me-footer { display: flex; align-items: center; justify-content: space-between; margin-top: .3rem; }
.me-footer-right { display: flex; gap: .5rem; }
.me-btn-ghost, .me-btn-primary {
  padding: .55rem 1rem; border-radius: 10px; border: none;
  font: inherit; font-size: .85rem; font-weight: 600; cursor: pointer; transition: opacity .15s;
}
.me-btn-ghost { background: var(--bg-3); color: var(--text-2); }
.me-btn-primary { background: var(--accent); color: #fff; }
.me-btn-ghost:hover, .me-btn-primary:hover { opacity: .88; }
.me-btn-primary:disabled { opacity: .4; cursor: default; }

/* ───────── 언어모델 비교 다이얼로그 ───────── */
.compare-box {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 16px; padding: 2rem 1.8rem;
  width: min(460px, 92vw); max-height: 86vh;
  box-shadow: 0 12px 40px rgba(0,0,0,.15);
  display: flex; flex-direction: column; gap: .9rem;
  position: relative; overflow: hidden;
}
.compare-box h2 { margin: 0; font-size: 1.25rem; font-weight: 700; text-align: center; }
.compare-picker-list {
  display: flex; flex-direction: column; gap: 2px;
  max-height: 320px; overflow-y: auto;
  border: 1px solid var(--border); border-radius: 10px; padding: 6px;
  background: var(--bg);
}
.compare-picker-row {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px; border-radius: 8px; cursor: pointer;
}
.compare-picker-row:hover { background: var(--bg-3); }
.compare-picker-row input { width: auto; flex-shrink: 0; }
.compare-picker-row span { flex: 1; min-width: 0; font-size: .88rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 비교 결과: 모델별 응답을 세로로 나열 */
.compare-row { display: flex; flex-direction: column; gap: 14px; margin: 8px 0; }
.compare-card {
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--bg-2); padding: 10px 12px; display: flex; flex-direction: column; gap: 6px;
}
.compare-card-head {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding-bottom: 6px; border-bottom: 1px solid var(--border);
}
.compare-card-model { font-size: .9rem; font-weight: 700; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.compare-adopt {
  flex-shrink: 0; border: 1px solid var(--accent); background: none; color: var(--accent);
  font: inherit; font-size: .78rem; font-weight: 600; padding: 4px 10px; border-radius: 999px; cursor: pointer;
}
.compare-adopt:hover:not(:disabled) { background: var(--accent); color: #fff; }
.compare-adopt:disabled { opacity: .35; cursor: default; border-color: var(--border); color: var(--text-3); }
.compare-card .msg.assistant { align-items: flex-start; }

/* ───────── 작업대 패널 ───────── */
#workspace-panel {
  width: 340px;
  flex-shrink: 0;
  display: flex;
  background: var(--sb-bg);
  border-right: 1px solid var(--border);
  transition: width .2s ease;
  overflow: hidden;
}
#workspace-panel.collapsed { width: 28px; }

#wb-toggle {
  width: 28px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  background: none;
  border: none;
  border-left: 1px solid var(--border);
  cursor: pointer;
  color: var(--text-3);
}
#wb-toggle:hover { color: var(--text); background: var(--bg-3); }
.wb-arrow { font-size: 9px; transition: transform .2s ease; }
#workspace-panel.collapsed .wb-arrow { transform: rotate(180deg); }
.wb-label {
  writing-mode: vertical-lr;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--text-2);
}

#wb-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}
.wb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 8px 7px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: .5px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
#wb-tree {
  flex: 1;
  overflow-y: auto;
  padding: 4px;
}
.wb-file {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 6px;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text);
}
.wb-file:hover { background: var(--bg-3); }
.wb-file-icon { font-size: 14px; flex-shrink: 0; }
.wb-fname {
  flex: 1;
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.wb-fsize { color: var(--text-3); font-size: 10px; flex-shrink: 0; }
.wb-dir { cursor: default; color: var(--text-2); }
.wb-dir:hover { background: var(--bg-3); cursor: pointer; }
.wb-dir.wb-drop-target { background: color-mix(in srgb, var(--accent) 15%, var(--sb-bg)); outline: 2px dashed var(--accent); outline-offset: -2px; }
.wb-dir-add {
  margin-left: auto; flex-shrink: 0;
  width: 18px; height: 18px; padding: 0;
  font-size: 14px; line-height: 1;
  opacity: 0; background: none; border: none; border-radius: 4px;
  color: var(--text-3); cursor: pointer;
}
.wb-file.wb-dir:hover .wb-dir-add { opacity: 1; }
.wb-dir-add:hover { color: var(--accent); background: var(--bg-3); }
.wb-item-del {
  flex-shrink: 0; width: 18px; height: 18px; padding: 0;
  font-size: 12px; line-height: 1; opacity: 0;
  background: none; border: none; border-radius: 4px;
  color: var(--text-3); cursor: pointer;
}
.wb-file:hover .wb-item-del { opacity: 1; }
.wb-item-del:hover { color: var(--danger); background: var(--bg-3); }
.wb-fold-icon { font-size: 8px; flex-shrink: 0; width: 12px; color: var(--text-3); transition: transform .15s ease; }
.wb-fold-icon.open { transform: rotate(90deg); }
.wb-subtree { padding-left: 26px; }
.wb-new-folder {
  display: flex; align-items: center; gap: 4px;
  padding: 4px 6px 6px;
}
.wb-new-folder input {
  flex: 1; font: inherit; font-size: 12px;
  padding: 3px 7px; border: 1px solid var(--accent);
  border-radius: 6px; background: var(--bg); color: var(--text); outline: none;
}
.wb-new-folder button {
  padding: 3px 8px; font-size: 12px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg-2); color: var(--text); cursor: pointer;
}
.wb-new-folder button:hover { background: var(--bg-3); }
.wb-empty { font-size: 12px; color: var(--text-3); padding: 16px 8px; text-align: center; line-height: 1.8; }
#workspace-panel.wb-dropping #wb-content {
  outline: 2px dashed var(--accent);
  outline-offset: -4px;
  background: color-mix(in srgb, var(--accent) 8%, var(--sb-bg));
}
#workspace-panel.wb-dropping #wb-tree::before {
  content: '여기에 놓으세요';
  display: block;
  text-align: center;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  padding: 20px 8px 0;
}

/* ───────── 모바일 ───────── */
/* 태블릿(≤1024px)까지 모바일형 레이아웃: 사이드바·작업대는 오버레이, 상단바 한 줄 */
@media (max-width: 1024px) {
  .only-mobile { display: inline-flex; }
  .no-mobile { display: none !important; }

  /* 사이드바 — 왼쪽 오버레이 */
  #sidebar {
    position: fixed; inset: 0 auto 0 0; z-index: 20;
    width: 300px !important;
    transform: translateX(-100%);
    transition: transform .2s ease;
  }
  body.sb-open #sidebar { transform: translateX(0); }

  /* 작업대 — 오른쪽 오버레이 */
  #workspace-panel {
    display: flex !important;
    position: fixed; inset: 0 0 0 auto; z-index: 20;
    width: min(320px, 92vw) !important;
    border-left: 1px solid var(--border); border-right: none;
    transform: translateX(110%);
    transition: transform .2s ease;
  }
  #workspace-panel.mobile-open { transform: translateX(0); }
  #wb-toggle { display: none; }

  /* 백드롭 — 사이드바·작업대 공용 */
  body.sb-open #sb-backdrop,
  body.wb-open #sb-backdrop {
    display: block; position: fixed; inset: 0;
    background: rgba(0,0,0,.4); z-index: 10;
  }

  /* 사이드바 항목 순서: 헤더(✕) → 셀렉터 → 새 대화 → 대화 목록 → 하단 */
  .sb-mobile-header { order: 1; }
  .sb-model-settings { order: 2; }
  .sb-top { order: 3; }
  #conv-list { order: 4; }
  .sb-bottom { order: 5; }

  /* 상단바 — 단일행: 언어모델·추론·그림 모두 사이드바로, 상단바에는 타이틀만 표시 */
  .effort-wrap { display: none; }
  .model-wrap { display: none; }
  .topbar-title { display: block; position: static; transform: none; flex: 1; text-align: center; }

  /* 메시지 */
  .msg.user .bubble { max-width: 92%; }

  /* 입력창 */
  .composer-hint { display: none; }
  /* 경고 문구가 사라진 만큼 토스트도 입력창 쪽으로 더 내림(입력창과 겹치지 않을 만큼만) */
  .toast { bottom: 76px; }
  .toast.show { bottom: 80px; }

  /* 환영화면 */
  .welcome { margin-top: 4vh; }
  .welcome h1 { font-size: 20px; margin-bottom: 16px; }
  .sugg { font-size: 13px; padding: 8px 12px; }
}

/* 모델 편집 다이얼로그: 좁은 화면에서는 표시명 열을 줄이고 ID·가격은 숨김 */
@media (max-width: 768px) {
  .me-current-row .me-label { width: auto; flex: 1; min-width: 0; }
  .me-catalog-row .me-cat-name { flex: 1 1 auto; }
  .me-current-row .me-id, .me-catalog-row .me-cat-id, .me-current-row .me-price { display: none; }
}

/* 화면 가운데 절대 위치인 제목은 1025~1200px 구간에서 언어모델 콤보박스와 겹치므로 숨김.
   1024px 이하(모바일형 레이아웃)는 언어모델 콤보박스가 사이드바로 옮겨져 겹치지 않으므로 제외. */
@media (max-width: 1200px) and (min-width: 1025px) {
  .topbar-title { display: none; }
}

/* 모델 편집 다이얼로그: 그림모델 모드 */
.me-badge { flex-shrink: 0; width: 56px; font-size: .72rem; color: var(--accent); white-space: nowrap; text-align: left; }
#model-edit-modal:not(.kind-image) .me-badge { display: none; }
.me-filter { display: none; font-size: .8rem; color: var(--text-2); align-items: center; gap: 6px; cursor: pointer; }
.me-filter input { width: auto; }
#model-edit-modal.kind-image .me-filter { display: flex; }
@media (max-width: 768px) { .me-badge { display: none; } }
/* 가격 열 고정 폭·오른쪽 정렬 — 뱃지·가격 열이 행마다 같은 위치에 오도록 */
.me-current-row .me-price, .me-catalog-row .me-cat-price { min-width: 190px; text-align: right; }
#model-edit-modal.kind-image .me-current-row .me-price, #model-edit-modal.kind-image .me-catalog-row .me-cat-price { min-width: 130px; }
.me-footer-end { justify-content: flex-end; gap: .5rem; }

/* ───────── 대화 공유 ───────── */
.share-link-row { display: flex; gap: 8px; }
#share-url {
  flex: 1; min-width: 0; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); color: var(--text); font-family: var(--mono); font-size: .8rem;
}
#share-cta { text-decoration: none; }

/* 공유 링크로 들어온 읽기 전용 화면: 사이드바·작업대·입력창·모델 선택을 모두 숨기고 대화만 보여줌 */
body.share-view #sidebar, body.share-view #sb-backdrop, body.share-view #workspace-panel,
body.share-view #composer-wrap, body.share-view #welcome,
body.share-view .model-wrap, body.share-view .effort-wrap, body.share-view #btn-open-sb {
  display: none !important;
}
body.share-view .topbar-right { margin-left: auto; }
body.share-view .topbar-title {
  position: static; transform: none; flex: 1; text-align: left; pointer-events: auto;
  overflow: hidden; text-overflow: ellipsis;
}
body.share-view .messages { padding-bottom: 40px; }
.share-error-page { max-width: 480px; margin: 20vh auto 0; padding: 0 16px; text-align: center; color: var(--text-2); font-size: 15px; line-height: 1.6; }