/* webui.opik.net — GitHub-dark styling, no frameworks */

:root {
  color-scheme: dark;
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --fg: #d2d8de;
  --fg-dim: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
  --red: #f85149;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; }
svg.icon { width: 16px; height: 16px; vertical-align: -3px; fill: none;
           stroke: currentColor; stroke-width: 1.8; stroke-linecap: round;
           stroke-linejoin: round; flex-shrink: 0; }

/* ---------------- login ---------------- */

.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 10px;
  padding: 2.5rem 2.2rem; width: 320px; text-align: center;
}
.login-logo { margin-bottom: .6rem; }
.login-card h1 { margin: 0 0 .2rem; font-size: 1.5rem; letter-spacing: .02em; }
.login-sub { margin: 0 0 1.4rem; color: var(--fg-dim); font-size: .9rem; }
.login-error { background: rgba(248,81,73,.12); border: 1px solid rgba(248,81,73,.4);
  color: var(--red); border-radius: 6px; padding: .5rem .8rem; font-size: .85rem; margin-bottom: 1rem; }
.login-card input {
  width: 100%; background: var(--bg); color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: .55rem .8rem; font: inherit; margin-bottom: .9rem; outline: none;
}
.login-card input:focus { border-color: var(--accent); }
.login-card button {
  width: 100%; background: #238636; color: #fff; border: 1px solid rgba(255,255,255,.1);
  border-radius: 6px; padding: .55rem; font-weight: 600;
}
.login-card button:hover { background: #2ea043; }

/* ---------------- layout ---------------- */

.app { display: flex; height: 100vh; overflow: hidden; }

.sidebar {
  width: 260px; min-width: 260px; background: var(--bg2);
  border-right: 1px solid var(--border); display: flex; flex-direction: column;
}
.sidebar-head { display: flex; align-items: center; gap: .5rem; padding: .8rem .9rem;
  border-bottom: 1px solid var(--border); font-weight: 600; }
.sidebar-head .logo { color: var(--accent); display: flex; }
.new-chat-btn {
  margin: .7rem .8rem .4rem; display: flex; align-items: center; justify-content: center; gap: .45rem;
  background: var(--bg3); color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: .5rem; font-weight: 500;
}
.new-chat-btn:hover { border-color: var(--accent); color: var(--accent); }
.chat-list { flex: 1; overflow-y: auto; padding: .4rem .5rem; }
.chat-item {
  display: flex; align-items: center; gap: .5rem; padding: .45rem .6rem;
  border-radius: 6px; cursor: pointer; color: var(--fg-dim); margin-bottom: 2px;
}
.chat-item:hover { background: var(--bg3); color: var(--fg); }
.chat-item.active { background: #1f2a3d; color: var(--fg); }
.chat-item .title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: .9rem; }
.chat-item .del { opacity: 0; background: none; border: none; color: var(--fg-dim); padding: 2px; border-radius: 4px; }
.chat-item:hover .del { opacity: .7; }
.chat-item .del:hover { color: var(--red); opacity: 1; }
.sidebar-foot { border-top: 1px solid var(--border); padding: .6rem .9rem; display: flex;
  align-items: center; justify-content: space-between; color: var(--fg-dim); font-size: .85rem; }
.sidebar-foot a { color: var(--fg-dim); display: flex; align-items: center; gap: .35rem; }
.sidebar-foot a:hover { color: var(--red); }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  display: flex; align-items: center; gap: .8rem; padding: .6rem 1rem;
  border-bottom: 1px solid var(--border); background: var(--bg2);
}
.topbar select {
  background: var(--bg3); color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: .35rem .5rem; font: inherit; outline: none;
}
.tool-toggles { display: flex; gap: .4rem; margin-left: auto; }
.tool-btn {
  display: flex; align-items: center; gap: .35rem; background: var(--bg3);
  color: var(--fg-dim); border: 1px solid var(--border); border-radius: 6px;
  padding: .3rem .6rem; font-size: .85rem;
}
.tool-btn:hover { color: var(--fg); }
.tool-btn.on { color: var(--green); border-color: rgba(63,185,80,.5); background: rgba(63,185,80,.08); }

/* ---------------- chat ---------------- */

.chat-scroll { flex: 1; overflow-y: auto; padding: 1.2rem 0; }
.chat-inner { max-width: 820px; margin: 0 auto; padding: 0 1.2rem; }

.msg { display: flex; gap: .8rem; margin-bottom: 1.4rem; }
.msg .avatar {
  width: 30px; height: 30px; border-radius: 8px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; color: #fff;
  background: var(--bg3); border: 1px solid var(--border);
}
.msg.user .avatar { background: #1f4487; border-color: #2b5bb3; }
.msg.assistant .avatar { background: #238636; border-color: #2ea043; }
.msg .bubble { flex: 1; min-width: 0; }
.msg .who { font-size: .8rem; color: var(--fg-dim); margin-bottom: .25rem; font-weight: 600; }
.msg .content { overflow-wrap: break-word; }

.msg img.attached {
  max-width: 320px; max-height: 240px; border-radius: 8px;
  border: 1px solid var(--border); display: block; margin: .3rem 0;
}

/* markdown */
.md p { margin: .45rem 0; }
.md pre {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 8px;
  padding: .8rem 1rem; overflow-x: auto; margin: .6rem 0; font: 13px/1.5 var(--mono);
}
.code-block { margin: .6rem 0; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.code-block .code-bar {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg3); border-bottom: 1px solid var(--border);
  padding: .3rem .8rem; font-size: .75rem;
}
.code-block .code-bar .lang { color: var(--fg-dim); font-family: var(--mono); }
.code-block .code-bar .copy-btn {
  display: flex; align-items: center; gap: .3rem; background: none;
  border: none; color: var(--fg-dim); font-size: .75rem; padding: 2px 4px; border-radius: 4px;
}
.code-block .code-bar .copy-btn:hover { color: var(--fg); background: var(--bg2); }
.code-block pre { margin: 0; border: none; border-radius: 0; }
.code-block pre code { background: none; padding: 0; }
/* highlight.js token colors tuned for the GitHub-dark palette */
.hljs-comment, .hljs-quote { color: #8b949e; font-style: italic; }
.hljs-keyword, .hljs-selector-tag { color: #ff7b72; }
.hljs-string, .hljs-regexp { color: #a5d6ff; }
.hljs-number, .hljs-literal { color: #79c0ff; }
.hljs-built_in, .hljs-type { color: #ffa657; }
.hljs-function .hljs-title, .hljs-title.function_ { color: #d2a8ff; }
.hljs-title.class_ { color: #ffa657; }
.hljs-attr, .hljs-attribute, .hljs-variable, .hljs-template-variable { color: #79c0ff; }
.hljs-name, .hljs-tag { color: #7ee787; }
.hljs-symbol, .hljs-bullet { color: #79c0ff; }
.hljs-section, .hljs-selector-id, .hljs-selector-class { color: #7ee787; }
.hljs-meta, .hljs-doctag { color: #8b949e; }
.hljs-deletion { color: #ffa198; background: rgba(248,81,73,.15); }
.hljs-addition { color: #7ee787; background: rgba(63,185,80,.15); }
.hljs-emphasis { font-style: italic; }
.hljs-strong { font-weight: 600; }
.md code { font: 13px var(--mono); background: var(--bg3); border-radius: 4px; padding: .1rem .35rem; }
.md pre code { background: none; padding: 0; }
.md ul, .md ol { margin: .4rem 0; padding-left: 1.4rem; }
.md blockquote { border-left: 3px solid var(--border); margin: .6rem 0; padding: .1rem .9rem; color: var(--fg-dim); }
.md table { border-collapse: collapse; margin: .6rem 0; }
.md th, .md td { border: 1px solid var(--border); padding: .35rem .7rem; }
.md th { background: var(--bg2); }
.md h1, .md h2, .md h3, .md h4 { margin: .9rem 0 .4rem; line-height: 1.3; }

/* thinking block */
.thinking-block {
  border: 1px solid var(--border); border-radius: 8px;
  padding: .4rem .7rem; margin: .4rem 0;
}
.thinking-block summary {
  cursor: pointer; color: var(--fg-dim); font-size: .85rem;
}
.thinking-block .thinking-body {
  color: var(--fg-dim); font-size: .88rem; white-space: pre-wrap;
  margin-top: .4rem;
}

/* tool call chips */
.tool-chip {
  display: flex; align-items: center; gap: .45rem; font-size: .85rem;
  color: var(--fg-dim); background: var(--bg2); border: 1px solid var(--border);
  border-radius: 6px; padding: .35rem .6rem; margin: .4rem 0; cursor: pointer;
}
.tool-chip .tname { color: var(--accent); font-family: var(--mono); font-size: .8rem; }
.tool-chip.running .tname { color: var(--fg-dim); }
.tool-chip pre {
  display: none; margin: .5rem 0 0; background: var(--bg); border-top: 1px solid var(--border);
  padding: .5rem .6rem; font: 12px/1.5 var(--mono); max-height: 260px; overflow: auto;
  white-space: pre-wrap; word-break: break-word;
}
.tool-chip.open pre { display: block; }
.tool-chip .chev { transition: transform .15s; }
.tool-chip.open .chev { transform: rotate(90deg); }

.cursor-blink { display: inline-block; width: 8px; height: 1.05em; background: var(--accent);
  vertical-align: text-bottom; animation: blink 1s steps(2) infinite; border-radius: 2px; }
@keyframes blink { 50% { opacity: 0; } }

.error-banner {
  background: rgba(248,81,73,.1); border: 1px solid rgba(248,81,73,.4); color: var(--red);
  border-radius: 8px; padding: .6rem .9rem; margin: .8rem 0; font-size: .9rem;
  white-space: pre-wrap; word-break: break-word;
}

.empty-state { text-align: center; color: var(--fg-dim); margin-top: 18vh; }
.empty-state .big { font-size: 2.2rem; margin-bottom: .6rem; }

/* ---------------- composer ---------------- */

.composer-wrap { border-top: 1px solid var(--border); background: var(--bg2); padding: .8rem 1rem; }
.composer { max-width: 820px; margin: 0 auto; }
.attach-row { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: .5rem; }
.attach-thumb { position: relative; }
.attach-thumb img { width: 64px; height: 64px; object-fit: cover; border-radius: 8px;
  border: 1px solid var(--border); display: block; }
.attach-thumb .rm {
  position: absolute; top: -7px; right: -7px; background: var(--bg3); color: var(--fg);
  border: 1px solid var(--border); border-radius: 50%; width: 20px; height: 20px;
  font-size: 11px; line-height: 1; display: flex; align-items: center; justify-content: center;
}
.attach-thumb .rm:hover { color: var(--red); border-color: var(--red); }
.input-row { display: flex; align-items: flex-end; gap: .5rem; }
#input {
  flex: 1; background: var(--bg); color: var(--fg); border: 1px solid var(--border);
  border-radius: 10px; padding: .65rem .9rem; font: inherit; resize: none;
  max-height: 180px; outline: none;
}
#input:focus { border-color: var(--accent); }
.icon-btn {
  background: var(--bg3); color: var(--fg-dim); border: 1px solid var(--border);
  border-radius: 8px; width: 38px; height: 38px; display: flex;
  align-items: center; justify-content: center; flex-shrink: 0;
}
.icon-btn:hover { color: var(--fg); border-color: var(--fg-dim); }
#send-btn { background: #238636; color: #fff; border-color: rgba(255,255,255,.1); }
#send-btn:hover { background: #2ea043; color: #fff; }
#send-btn:disabled { opacity: .5; cursor: default; }
#send-btn.stop { background: #b62324; }
.hint { text-align: center; color: var(--fg-dim); font-size: .75rem; margin-top: .45rem; }

/* admin panel */
.admin-wrap { max-width: 760px; margin: 0 auto; padding: 2rem 1rem; }
.admin-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.2rem; }
.admin-head h1 { margin: 0; font-size: 1.3rem; }
.admin-card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.2rem; margin-bottom: 1.2rem;
}
.admin-card h2 { margin: 0 0 .8rem; font-size: 1rem; }
.admin-grid { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: .5rem; align-items: center; }
.admin-grid input {
  background: var(--bg); color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: .45rem .7rem; font: inherit; outline: none; width: 100%;
}
.admin-grid input:focus { border-color: var(--accent); }
.btn {
  background: #238636; color: #fff; border: 1px solid rgba(255,255,255,.1);
  border-radius: 6px; padding: .45rem .9rem; font: inherit; font-weight: 600;
}
.btn:hover { background: #2ea043; }
.btn.danger { background: transparent; color: var(--red); border-color: rgba(248,81,73,.5); }
.btn.danger:hover { background: rgba(248,81,73,.1); }
.btn.ghost { background: var(--bg3); color: var(--fg); border-color: var(--border); font-weight: 400; }
.btn.ghost:hover { border-color: var(--fg-dim); }
.user-table { width: 100%; border-collapse: collapse; }
.user-table th, .user-table td {
  text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--border);
  font-size: .9rem; vertical-align: middle;
}
.user-table th { color: var(--fg-dim); font-weight: 500; }
.user-table td input {
  background: var(--bg); color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: .35rem .5rem; font: inherit; width: 100%; outline: none;
}
.user-table td input:focus { border-color: var(--accent); }
.user-table .actions { display: flex; gap: .35rem; }
.admin-note { color: var(--fg-dim); font-size: .82rem; margin-top: .6rem; }
.admin-error { color: var(--red); font-size: .85rem; margin-top: .5rem; min-height: 1.2em; }

/* mobile */
@media (max-width: 760px) {
  .sidebar { position: fixed; z-index: 10; left: 0; top: 0; bottom: 0; transform: translateX(-100%);
    transition: transform .2s; box-shadow: 0 0 30px rgba(0,0,0,.5); }
  .sidebar.open { transform: translateX(0); }
  .menu-btn { display: flex !important; }
  .admin-grid { grid-template-columns: 1fr; }
}
.menu-btn { display: none; background: none; border: none; color: var(--fg);
  padding: 4px; margin-left: -.4rem; }