/* Super Nexus — professional dark-sidebar / light-content theme */
:root {
  --sidebar-bg: #0e1526;
  --sidebar-text: #a8b3c7;
  --sidebar-active: #1d2a45;
  --accent: #4f6df5;
  --accent-soft: #eef1fe;
  --bg: #f4f6fa;
  --panel: #ffffff;
  --border: #e3e8f0;
  --text: #1c2333;
  --muted: #66718a;
  --danger: #d64550;
  --warn: #b9790a;
  --warn-bg: #fdf4e0;
  --ok: #178a50;
  --radius: 10px;
  font-size: 15px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: "Segoe UI", "Inter", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background: var(--bg); color: var(--text);
}
#root { height: 100%; }

/* ---------- generic ---------- */
button {
  font: inherit; border: none; cursor: pointer; border-radius: 8px;
  padding: 9px 16px; background: var(--accent); color: #fff; font-weight: 600;
  transition: filter .15s ease;
}
button:hover { filter: brightness(1.08); }
button:disabled { opacity: .55; cursor: default; }
button.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
button.subtle { background: #edf0f6; color: var(--text); font-weight: 500; }
button.danger { background: var(--danger); }
button.link { background: none; color: var(--muted); padding: 4px 6px; font-weight: 500; }
button.link:hover { color: var(--danger); filter: none; }
input, select, textarea {
  font: inherit; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: #fff; color: var(--text); width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
label { display: block; font-size: .85rem; font-weight: 600; color: var(--muted); margin: 12px 0 4px; }
h1 { font-size: 1.45rem; margin: 0 0 4px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
.hint { color: var(--muted); font-size: .88rem; margin: 0 0 16px; }
.muted { color: var(--muted); }
.error-text { color: var(--danger); font-weight: 600; }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; margin-bottom: 18px;
}
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; color: var(--muted); font-weight: 600; padding: 8px 10px; border-bottom: 2px solid var(--border); white-space: nowrap; }
td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
.badge {
  display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: .75rem; font-weight: 700;
}
.badge.ok { background: #e2f5ea; color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.err { background: #fbe4e6; color: var(--danger); }
.badge.info { background: var(--accent-soft); color: var(--accent); }
.badge.role { background: #e9ecf5; color: #46536e; }

.toast {
  position: fixed; bottom: 22px; right: 22px; z-index: 100; max-width: 380px;
  background: #1c2333; color: #fff; padding: 12px 18px; border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0,0,0,.25); font-size: .9rem;
}
.toast.error { background: var(--danger); }

/* ---------- login ---------- */
.login-wrap {
  min-height: 100%; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(150deg, #0e1526 0%, #172441 55%, #27395f 100%); padding: 20px;
}
.login-card { background: #fff; border-radius: 14px; padding: 34px 34px 26px; width: 400px; box-shadow: 0 20px 60px rgba(0,0,0,.35); }
.login-card .logo { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.logo-mark { font-size: 1.5rem; }
.brand { font-size: 1.25rem; font-weight: 800; letter-spacing: .2px; }
.login-card .demo { margin-top: 18px; background: var(--bg); border-radius: 8px; padding: 10px 14px; font-size: .8rem; color: var(--muted); line-height: 1.7; }
.lang-switch { margin-left: auto; display: flex; gap: 4px; }
.lang-switch button { padding: 3px 9px; font-size: .75rem; background: transparent; color: inherit; border: 1px solid currentColor; opacity: .6; }
.lang-switch button.on { opacity: 1; font-weight: 800; background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---------- app shell ---------- */
.shell { display: flex; height: 100%; }
.sidebar {
  width: 240px; background: var(--sidebar-bg); color: var(--sidebar-text);
  display: flex; flex-direction: column; padding: 18px 12px; flex-shrink: 0;
}
.sidebar .brand-row { display: flex; align-items: center; gap: 8px; color: #fff; padding: 4px 8px 16px; }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar nav button {
  display: flex; gap: 10px; align-items: center; text-align: left; background: none; color: var(--sidebar-text);
  padding: 10px 12px; border-radius: 8px; font-weight: 500;
}
.sidebar nav button:hover { background: rgba(255,255,255,.06); filter: none; }
.sidebar nav button.on { background: var(--sidebar-active); color: #fff; font-weight: 600; }
.sidebar .spacer { flex: 1; }
.sidebar .userbox { border-top: 1px solid rgba(255,255,255,.08); padding: 12px 8px 4px; font-size: .85rem; }
.sidebar .userbox .email { color: #fff; font-weight: 600; word-break: break-all; }
.sidebar .userbox .tenant { font-size: .78rem; margin: 2px 0 10px; }
.sidebar .lang-switch { margin: 8px 8px 6px; }
.sidebar .lang-switch button { color: var(--sidebar-text); border-color: rgba(255,255,255,.25); }
.sidebar .lang-switch button.on { color: #fff; }
.content { flex: 1; overflow-y: auto; padding: 26px 30px; }
.content.narrow { max-width: 980px; }

/* ---------- chat ---------- */
.chat-layout { display: flex; gap: 18px; height: calc(100vh - 52px); }
.conv-list { width: 230px; flex-shrink: 0; display: flex; flex-direction: column; gap: 8px; }
.conv-list .card { padding: 12px; overflow-y: auto; flex: 1; }
.conv-item {
  display: flex; justify-content: space-between; align-items: center; gap: 6px;
  padding: 8px 10px; border-radius: 8px; cursor: pointer; font-size: .85rem;
}
.conv-item:hover { background: var(--bg); }
.conv-item.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.conv-item .t { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.chat-scroll { flex: 1; overflow-y: auto; padding-right: 6px; }
.msg { margin-bottom: 16px; max-width: 860px; }
.msg.user .bubble {
  background: var(--accent); color: #fff; padding: 10px 16px; border-radius: 14px 14px 4px 14px;
  display: inline-block; float: right; max-width: 75%;
}
.msg.user::after { content: ""; display: block; clear: both; }
.msg.assistant .bubble {
  background: var(--panel); border: 1px solid var(--border); border-radius: 4px 14px 14px 14px;
  padding: 14px 18px; white-space: pre-wrap; line-height: 1.55; font-size: .95rem;
}
.msg.assistant .bubble .cit {
  display: inline-block; background: var(--accent-soft); color: var(--accent); border-radius: 5px;
  font-size: .72rem; font-weight: 800; padding: 1px 6px; margin-left: 2px; cursor: pointer; vertical-align: super;
}
.msg.assistant .bubble .cit:hover { background: var(--accent); color: #fff; }
.msg-meta { display: flex; gap: 8px; align-items: center; margin-top: 8px; font-size: .78rem; color: var(--muted); flex-wrap: wrap; }
.sources { margin: 10px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 10px; }
.source-card {
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; background: #fbfcfe; font-size: .8rem;
  cursor: default;
}
.source-card.flash { outline: 2px solid var(--accent); }
.source-card .head { display: flex; justify-content: space-between; gap: 6px; align-items: baseline; }
.source-card .title { font-weight: 700; }
.source-card .meta { color: var(--muted); margin: 3px 0 6px; }
.source-card .quote { color: #333c52; line-height: 1.45; }
.source-card .relevance { height: 4px; background: var(--border); border-radius: 3px; margin-top: 8px; }
.source-card .relevance > div { height: 100%; background: var(--accent); border-radius: 3px; }
.chat-composer { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; margin-top: 12px; }
.chat-composer .row { display: flex; gap: 10px; align-items: flex-end; }
.chat-composer textarea { min-height: 46px; max-height: 140px; resize: vertical; }
.chat-empty { text-align: center; margin-top: 8vh; }
.chat-empty .samples { display: flex; flex-direction: column; gap: 8px; max-width: 560px; margin: 18px auto 0; }
.chat-empty .samples button { background: var(--panel); color: var(--text); border: 1px solid var(--border); font-weight: 500; text-align: left; }
.chat-empty .samples button:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- documents ---------- */
.upload-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr auto; gap: 12px; align-items: end; }
.upload-grid label { margin-top: 0; }
@media (max-width: 1000px) { .upload-grid { grid-template-columns: 1fr 1fr; } }
.size-cell { white-space: nowrap; color: var(--muted); }
.filters { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; }
.filters select { width: 220px; }

/* ---------- admin ---------- */
.tab-row { display: flex; gap: 6px; margin-bottom: 16px; }
.tab-row button { background: transparent; color: var(--muted); font-weight: 600; border: 1px solid transparent; }
.tab-row button.on { color: var(--accent); border-color: var(--border); background: var(--panel); }
.inline-form { display: grid; grid-template-columns: 2fr 1.4fr 1fr auto; gap: 10px; align-items: end; }
.inline-form label { margin-top: 0; }
.settings-form { max-width: 640px; }
.settings-actions { display: flex; gap: 10px; margin-top: 16px; align-items: center; }
.stored-key {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 12px; margin: 4px 0 8px; font-size: .88rem;
}
.stored-key code { background: transparent; font-size: .88rem; letter-spacing: .5px; }
.note { background: var(--accent-soft); color: #3b4d9b; padding: 10px 14px; border-radius: 8px; font-size: .85rem; margin-bottom: 14px; }
.note.warn { background: var(--warn-bg); color: var(--warn); }
footer.privacy { color: var(--muted); font-size: .8rem; text-align: center; padding: 10px 0 4px; }

/* ---------- analysis report ---------- */
.report { line-height: 1.55; font-size: .93rem; }
.report .report-title { font-size: 1.2rem; margin: 4px 0 10px; }
.report .report-h {
  font-size: 1rem; margin: 14px 0 6px; padding-bottom: 4px;
  border-bottom: 1px solid var(--border); color: var(--accent);
}
.report .report-line { margin: 4px 0; }
.report .report-gap { height: 6px; }
.report .report-pre, .report pre {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 14px; font-family: Consolas, monospace; font-size: .85rem;
  white-space: pre-wrap; overflow-x: auto;
}
.source-card.market { background: #f0f4ff; border-color: #c8d4fb; }