/* Perse AI Assistants — Perse purple #5C338E (from perse.co.uk) */
:root {
  --perse: #5c338e;
  --perse-dark: #43246a;
  --perse-tint: #f2edf8;
  --perse-tint-2: #e4d9f1;
  --ink: #202020;
  --muted: #5d5866;
  --line: #ddd6e6;
  --bg: #faf9fc;
  --card: #ffffff;
  --ok: #1b7a43;
  --warn: #9a5b00;
  --bad: #b3261e;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(32, 16, 64, .06), 0 4px 16px rgba(32, 16, 64, .06);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--bg); line-height: 1.5; }
a { color: var(--perse); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: 1.6rem; } h2 { font-size: 1.25rem; } h3 { font-size: 1.05rem; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

/* Header */
.topbar { background: var(--perse); color: #fff; display: flex; align-items: center; gap: 16px;
  padding: 10px 20px; position: sticky; top: 0; z-index: 20; }
.topbar img.logo { height: 44px; width: auto; display: block; }
.topbar .title { font-weight: 600; font-size: 1.05rem; border-left: 1px solid rgba(255,255,255,.4); padding-left: 16px; }
.topbar .spacer { flex: 1; }
.topbar a, .topbar button.link { color: #fff; }
.topbar .who { font-size: .85rem; opacity: .9; }

/* Layout */
.wrap { max-width: 1100px; margin: 0 auto; padding: 24px 20px 64px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; }
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.stack > * + * { margin-top: 12px; }

/* Forms */
label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 4px; }
label .hint, .hint { font-weight: 400; color: var(--muted); font-size: .825rem; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=date], select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid #c9c0d6; border-radius: 8px; font: inherit; color: var(--ink);
  background: #fff; }
textarea { resize: vertical; min-height: 90px; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 3px solid var(--perse-tint-2); border-color: var(--perse); }
.field { margin-bottom: 14px; }
.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 500; }
.check input { margin-top: 4px; }

button, .btn { font: inherit; border: 1px solid var(--perse); background: var(--perse); color: #fff; padding: 8px 16px;
  border-radius: 8px; cursor: pointer; font-weight: 600; text-decoration: none; display: inline-flex; align-items: center;
  gap: 6px; }
button:hover, .btn:hover { background: var(--perse-dark); border-color: var(--perse-dark); }
button.secondary, .btn.secondary { background: #fff; color: var(--perse); }
button.secondary:hover { background: var(--perse-tint); }
button.danger { background: #fff; color: var(--bad); border-color: #e3b5b1; }
button.danger:hover { background: #fdf0ef; }
button.link { background: none; border: none; color: var(--perse); padding: 0; font-weight: 500; text-decoration: underline; }
button:disabled { opacity: .55; cursor: not-allowed; }

/* Switch */
.switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-weight: 500; user-select: none; }
.switch input { appearance: none; width: 38px; height: 22px; border-radius: 11px; background: #c9c0d6; position: relative;
  cursor: pointer; transition: background .15s; margin: 0; flex: none; }
.switch input::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; transition: left .15s; }
.switch input:checked { background: var(--perse); }
.switch input:checked::after { left: 19px; }

/* Messages */
.notice { padding: 10px 14px; border-radius: 8px; background: var(--perse-tint); border: 1px solid var(--perse-tint-2); }
.notice.warn { background: #fff6e5; border-color: #f1d6a2; color: #5c3b00; }
.notice.bad { background: #fdf0ef; border-color: #efc2be; color: #7a1a14; }
.notice.ok { background: #ecf7f0; border-color: #b9dfc8; color: #12512c; }
.badge { display: inline-block; font-size: .75rem; font-weight: 600; padding: 2px 8px; border-radius: 999px;
  background: var(--perse-tint); color: var(--perse-dark); }
.badge.ok { background: #e3f4ea; color: var(--ok); } .badge.warn { background: #fff1d6; color: var(--warn); }
.badge.bad { background: #fde5e3; color: var(--bad); }
#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: #fff;
  padding: 10px 18px; border-radius: 8px; z-index: 100; box-shadow: var(--shadow); max-width: 90vw; }

/* Login */
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px;
  background: linear-gradient(160deg, var(--perse) 0%, var(--perse-dark) 100%); }
.login-card { width: 100%; max-width: 400px; background: #fff; border-radius: 14px; padding: 32px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.login-card img.logo { height: 64px; display: block; margin: 0 auto 18px; }
.login-card h1 { text-align: center; font-size: 1.3rem; color: var(--perse); }
.login-card button[type=submit] { width: 100%; justify-content: center; padding: 11px; }

/* Bot list */
.bot-card { display: block; text-decoration: none; color: inherit; transition: transform .1s, box-shadow .1s; }
.bot-card:hover { transform: translateY(-2px); box-shadow: 0 6px 22px rgba(92, 51, 142, .18); }
.bot-card h3 { color: var(--perse); }
.bot-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--perse-tint); color: var(--perse); display: grid;
  place-items: center; font-weight: 700; margin-bottom: 10px; }

/* Chat */
.chat-page { display: flex; flex-direction: column; height: 100vh; }
.chat-banner { background: #fff8e6; border-bottom: 1px solid #f1dfb0; padding: 8px 20px; font-size: .875rem; display: flex;
  gap: 12px; align-items: center; flex-wrap: wrap; color: #4d3800; }
.chat-banner .spacer { flex: 1; }
.chat-banner button { padding: 5px 12px; font-size: .85rem; }
.chat-head { padding: 12px 20px; border-bottom: 1px solid var(--line); background: #fff; display: flex; gap: 12px;
  align-items: center; flex-wrap: wrap; }
.chat-head h1 { font-size: 1.15rem; margin: 0; color: var(--perse); }
.chat-head .spacer { flex: 1; }
.chat-scroll { flex: 1; overflow-y: auto; padding: 20px; }
.chat-inner { max-width: 820px; margin: 0 auto; }
.msg { margin: 0 0 16px; display: flex; }
.msg .bubble { padding: 12px 16px; border-radius: 14px; max-width: 100%; overflow-wrap: anywhere; }
.msg.user { justify-content: flex-end; }
.msg.user .bubble { background: var(--perse); color: #fff; border-bottom-right-radius: 4px; max-width: 80%; white-space: pre-wrap; }
.msg.model .bubble { background: #fff; border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.msg.model .bubble > :first-child { margin-top: 0; } .msg.model .bubble > :last-child { margin-bottom: 0; }
.bubble table { border-collapse: collapse; margin: 8px 0; font-size: .9rem; }
.bubble th, .bubble td { border: 1px solid var(--line); padding: 4px 8px; text-align: left; }
.bubble code { background: var(--perse-tint); padding: 1px 4px; border-radius: 4px; }
.bubble blockquote { border-left: 3px solid var(--perse-tint-2); margin: 8px 0; padding-left: 12px; color: var(--muted); }
.sources { margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--line); font-size: .825rem; }
.sources a { display: inline-block; margin: 2px 8px 2px 0; }
.debug { font-size: .75rem; color: var(--muted); margin-top: 6px; }
.starters { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 20px; }
.starters button { background: #fff; color: var(--perse); border-color: var(--perse-tint-2); font-weight: 500; }
.starters button:hover { background: var(--perse-tint); }
.composer { border-top: 1px solid var(--line); background: #fff; padding: 12px 20px; }
.composer form { max-width: 820px; margin: 0 auto; display: flex; gap: 10px; align-items: flex-end; }
.composer textarea { min-height: 48px; max-height: 200px; }
.composer .meta { max-width: 820px; margin: 4px auto 0; font-size: .75rem; color: var(--muted); display: flex; justify-content: space-between; }
.typing span { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--perse); opacity: .3;
  margin-right: 4px; animation: blink 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: .2s; } .typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 50% { opacity: 1; } }

/* Privacy and terms */
.legal h2 { margin-top: 28px; color: var(--perse); }
.legal li { margin-bottom: 6px; }

/* Admin */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--line); margin-bottom: 20px; flex-wrap: wrap; }
.tabs button { background: none; color: var(--muted); border: none; border-bottom: 3px solid transparent; border-radius: 0;
  padding: 10px 14px; margin-bottom: -2px; font-weight: 600; }
.tabs button:hover { background: var(--perse-tint); color: var(--perse); }
.tabs button.active { color: var(--perse); border-bottom-color: var(--perse); }
table.data { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.data th { text-align: left; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted);
  border-bottom: 2px solid var(--line); padding: 8px; }
table.data td { border-bottom: 1px solid var(--line); padding: 10px 8px; vertical-align: top; }
table.data tr:hover td { background: #fcfbfe; }
table.data .num { text-align: right; font-variant-numeric: tabular-nums; }
.designer { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 20px; align-items: start; }
@media (max-width: 900px) { .designer { grid-template-columns: 1fr; } }
.preview { position: sticky; top: 84px; }
.preview .frame { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg); }
.preview .frame .chat-banner { padding: 6px 12px; font-size: .78rem; }
.preview .frame .chat-head { padding: 10px 12px; }
.preview .frame .chat-scroll { padding: 12px; min-height: 260px; }
.dropzone { border: 2px dashed #c9b8df; border-radius: var(--radius); padding: 22px; text-align: center; background: var(--perse-tint);
  cursor: pointer; transition: background .1s; }
.dropzone.over { background: var(--perse-tint-2); border-color: var(--perse); }
.file-list { list-style: none; padding: 0; margin: 12px 0 0; }
.file-list li { display: flex; gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: .9rem; }
.file-list li .name { flex: 1; overflow-wrap: anywhere; }
.meter { height: 10px; background: var(--perse-tint); border-radius: 5px; overflow: hidden; margin: 8px 0 4px; }
.meter > div { height: 100%; background: var(--perse); border-radius: 5px; }
.meter.warn > div { background: #d08a00; } .meter.bad > div { background: var(--bad); }
.stat { font-size: 1.9rem; font-weight: 700; color: var(--perse); line-height: 1.1; }
.bars { display: flex; align-items: flex-end; gap: 3px; height: 140px; padding-top: 10px; }
.bars div { flex: 1; background: var(--perse); border-radius: 3px 3px 0 0; min-height: 2px; position: relative; }
.bars div:hover { background: var(--perse-dark); }
.bars-axis { display: flex; gap: 3px; font-size: .7rem; color: var(--muted); }
.bars-axis span { flex: 1; text-align: center; }
.modal-back { position: fixed; inset: 0; background: rgba(20, 10, 40, .45); display: grid; place-items: center; z-index: 50; padding: 20px; }
.modal { background: #fff; border-radius: 12px; padding: 24px; width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; }
.pw-box { font-family: Consolas, monospace; font-size: 1.2rem; background: var(--perse-tint); padding: 10px 14px; border-radius: 8px;
  letter-spacing: .05em; user-select: all; }
.bot-checks { max-height: 180px; overflow-y: auto; border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; }

@media print {
  .topbar, .chat-banner, .composer, .chat-head .spacer ~ * { display: none !important; }
  .chat-page { height: auto; } .chat-scroll { overflow: visible; }
}