:root {
  --navy: #040e29;
  --navy-2: #0b1a3f;
  --sky: #38d0ff;
  --blue: #4481eb;
  --blue-2: #238bd4;
  --bg: #f5f8fc;
  --card: #ffffff;
  --ink: #0f172a;
  --ink-2: #475569;
  --ink-3: #94a3b8;
  --line: #e2e8f0;
  --agent: #e8f0fe;
  --cust: #f1f5f9;
  --good: #0f7b4f;
  --good-bg: #ecfdf3;
  --warn: #a66300;
  --warn-bg: #fffaeb;
  --bad: #b42318;
  --bad-bg: #fef3f2;
  --radius: 14px;
  --shadow: 0 20px 60px rgba(4, 14, 41, 0.28);
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font-size: 15px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--blue-2); }
.hidden { display: none !important; }

/* ---------------- landing ---------------- */

.hero {
  background: radial-gradient(1200px 500px at 85% -10%, rgba(56, 208, 255, 0.25), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
  padding: 28px 16px 72px;
}
.wrap { max-width: 1080px; margin: 0 auto; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.topbar img { height: 26px; }
.badge {
  display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 0.04em;
  padding: 4px 10px; border-radius: 999px; border: 1px solid rgba(255, 255, 255, 0.25); color: #dbeafe;
}
.hero h1 { font-size: clamp(30px, 5vw, 48px); line-height: 1.1; margin: 56px 0 14px; max-width: 720px; letter-spacing: -0.02em; }
.hero h1 span { color: var(--sky); }
.hero p.lead { font-size: 18px; color: #cbd5e1; max-width: 640px; margin: 0 0 28px; }
.cta {
  display: inline-flex; align-items: center; gap: 10px; border: 0; cursor: pointer;
  background: var(--sky); color: var(--navy); font-weight: 700; font-size: 16px;
  padding: 14px 22px; border-radius: 12px; box-shadow: 0 10px 30px rgba(56, 208, 255, 0.35);
}
.cta:hover { filter: brightness(1.05); }
.cta svg { width: 20px; height: 20px; }

.section { padding: 48px 16px; }
.section h2 { font-size: 24px; margin: 0 0 6px; letter-spacing: -0.01em; }
.section p.sub { color: var(--ink-2); margin: 0 0 24px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.tile h3 { margin: 0 0 6px; font-size: 16px; }
.tile p { margin: 0; color: var(--ink-2); font-size: 14px; }
.tile .n { font-size: 12px; font-weight: 700; color: var(--blue); letter-spacing: 0.06em; text-transform: uppercase; }
.stages { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.stage-pill { background: #eaf6ff; color: var(--blue-2); font-weight: 600; font-size: 13px; padding: 6px 12px; border-radius: 999px; }
.weights { display: grid; gap: 10px; }
.weight { display: grid; grid-template-columns: 200px 1fr 48px; gap: 12px; align-items: center; font-size: 14px; }
.weight .track { height: 8px; border-radius: 999px; background: var(--line); overflow: hidden; }
.weight .fill { height: 100%; background: linear-gradient(90deg, var(--blue), var(--sky)); }
@media (max-width: 560px) { .weight { grid-template-columns: 1fr 48px; } .weight .track { grid-column: 1 / -1; order: 3; } }

footer { color: var(--ink-3); font-size: 13px; padding: 24px 16px 48px; text-align: center; }

/* launcher bubble */
.launcher {
  position: fixed; right: 20px; bottom: 20px; z-index: 40; width: 60px; height: 60px; border-radius: 50%;
  border: 0; cursor: pointer; background: linear-gradient(135deg, var(--blue), var(--sky)); color: #fff;
  box-shadow: 0 12px 30px rgba(68, 129, 235, 0.45); display: grid; place-items: center;
}
.launcher svg { width: 28px; height: 28px; }

/* ---------------- popup ---------------- */

.overlay { position: fixed; inset: 0; z-index: 50; background: rgba(4, 14, 41, 0.45); display: flex; align-items: flex-end; justify-content: flex-end; padding: 20px; }
.popup {
  width: min(440px, 100%); height: min(720px, calc(100vh - 40px)); background: var(--card);
  border-radius: 18px; box-shadow: var(--shadow); display: flex; flex-direction: column; overflow: hidden;
  animation: pop 0.18s ease-out;
}
.popup.wide { width: min(860px, 100%); }
@keyframes pop { from { transform: translateY(12px); opacity: 0; } to { transform: none; opacity: 1; } }
@media (max-width: 600px) {
  .overlay { padding: 0; }
  .popup, .popup.wide { width: 100%; height: 100%; border-radius: 0; }
}

.pop-head { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--line); background: #fff; }
.pop-head .avatar { width: 38px; height: 38px; border-radius: 50%; background: linear-gradient(135deg, var(--blue), var(--sky)); color: #fff; display: grid; place-items: center; font-weight: 700; flex: none; }
.pop-head .who { flex: 1; min-width: 0; }
.pop-head .who b { display: block; font-size: 16px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pop-head .who small { color: var(--ink-3); font-size: 12px; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.icon-btn { border: 0; background: transparent; cursor: pointer; width: 34px; height: 34px; border-radius: 8px; display: grid; place-items: center; color: var(--ink-2); flex: none; }
.icon-btn:hover { background: var(--bg); }
.icon-btn svg { width: 20px; height: 20px; }
.timer { font-variant-numeric: tabular-nums; font-size: 13px; font-weight: 600; color: var(--ink-2); background: var(--bg); padding: 4px 8px; border-radius: 8px; flex: none; }
.timer.over { color: var(--bad); background: var(--bad-bg); }
.end-btn { border: 1px solid var(--line); background: #fff; color: var(--bad); font-weight: 600; font-size: 13px; padding: 6px 10px; border-radius: 8px; cursor: pointer; flex: none; }
.end-btn:hover { background: var(--bad-bg); }

.pop-body { flex: 1; overflow-y: auto; padding: 18px 16px; }
.pop-foot { border-top: 1px solid var(--line); padding: 10px 12px; background: #fff; }

/* pre-chat form */
.form h2 { font-size: 20px; margin: 4px 0 4px; }
.form p { color: var(--ink-2); margin: 0 0 18px; font-size: 14px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.field input, .field select {
  width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; background: #fff; outline: none;
}
.field input:focus, .field select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(68, 129, 235, 0.15); }
.err { color: var(--bad); font-size: 13px; margin: -4px 0 12px; min-height: 18px; }
.primary { width: 100%; border: 0; cursor: pointer; background: var(--navy); color: #fff; font-weight: 700; padding: 13px; border-radius: 12px; }
.primary:hover { background: var(--navy-2); }
.primary:disabled { opacity: 0.6; cursor: wait; }
.secondary { border: 1px solid var(--line); background: #fff; cursor: pointer; font-weight: 600; padding: 11px 14px; border-radius: 12px; }
.note { font-size: 12px; color: var(--ink-3); margin-top: 12px; }

.brief { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-bottom: 14px; font-size: 14px; }
.brief h3 { margin: 0 0 4px; font-size: 16px; }
.brief .row { display: grid; grid-template-columns: 110px 1fr; gap: 6px; margin-top: 6px; }
.brief .row span:first-child { color: var(--ink-3); }
.chip { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; background: #eaf6ff; color: var(--blue-2); }
.chip.easy { background: var(--good-bg); color: var(--good); }
.chip.medium { background: var(--warn-bg); color: var(--warn); }
.chip.hard { background: var(--bad-bg); color: var(--bad); }

/* chat */
.day { text-align: center; color: var(--ink-3); font-size: 12px; margin: 10px 0; }
.msg-group { margin-bottom: 10px; display: flex; flex-direction: column; }
.msg-group .name { font-size: 12px; color: var(--ink-3); margin: 0 4px 4px; }
.msg-group.agent { align-items: flex-end; }
.msg-group.customer { align-items: flex-start; }
.bubble { max-width: 82%; padding: 9px 13px; border-radius: 14px; margin-bottom: 4px; white-space: pre-wrap; word-wrap: break-word; font-size: 15px; }
.customer .bubble { background: var(--cust); border-top-left-radius: 6px; }
.agent .bubble { background: var(--agent); border-top-right-radius: 6px; }
.bubble.pending { opacity: 0.55; }
.stamp { text-align: center; color: var(--ink-3); font-size: 11px; margin: 12px 0 8px; }
.sys { text-align: center; color: var(--ink-2); font-size: 12px; margin: 10px auto; max-width: 90%; background: var(--warn-bg); border-radius: 8px; padding: 6px 10px; }
.typing { display: inline-flex; gap: 4px; padding: 12px 14px; background: var(--cust); border-radius: 14px; border-top-left-radius: 6px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-3); animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: 0.2s; }
.typing i:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }

.composer { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea {
  flex: 1; resize: none; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; max-height: 140px; min-height: 44px; outline: none; line-height: 1.4;
}
.composer textarea:focus { border-color: var(--blue); }
.send { border: 0; width: 44px; height: 44px; border-radius: 12px; background: var(--blue); color: #fff; cursor: pointer; display: grid; place-items: center; flex: none; }
.send:disabled { opacity: 0.4; cursor: default; }
.send svg { width: 20px; height: 20px; }
.hint { font-size: 11px; color: var(--ink-3); margin: 6px 2px 0; }

/* grading wait */
.center { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 14px; color: var(--ink-2); padding: 20px; }
.spinner { width: 44px; height: 44px; border-radius: 50%; border: 4px solid var(--line); border-top-color: var(--blue); animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- report ---------------- */

.report h2 { font-size: 17px; margin: 22px 0 8px; }
.score-card { display: flex; gap: 18px; align-items: center; padding: 18px; border-radius: 14px; }
.score-card.pass { background: var(--good-bg); }
.score-card.fail { background: var(--bad-bg); }
.ring { --p: 0; --c: var(--good); width: 92px; height: 92px; border-radius: 50%; flex: none; display: grid; place-items: center;
  background: conic-gradient(var(--c) calc(var(--p) * 1%), #fff 0); }
.ring div { width: 74px; height: 74px; border-radius: 50%; background: #fff; display: grid; place-items: center; font-weight: 800; font-size: 26px; }
.score-card .verdict { font-weight: 800; font-size: 18px; }
.score-card .summary { margin-top: 4px; font-size: 14px; color: var(--ink); }
.bars { display: grid; gap: 8px; margin-top: 14px; }
.bar { display: grid; grid-template-columns: 170px 1fr 40px; gap: 10px; align-items: center; font-size: 14px; }
.bar .track { height: 8px; background: var(--line); border-radius: 999px; overflow: hidden; }
.bar .fill { height: 100%; border-radius: 999px; }
.bar b { text-align: right; }
@media (max-width: 520px) { .bar { grid-template-columns: 1fr 40px; } .bar .track { grid-column: 1 / -1; order: 3; } }

.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; }
.kv div { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.kv small { display: block; color: var(--ink-3); font-size: 12px; }
.kv b { font-size: 17px; }
.kv .bad b { color: var(--bad); }
.kv .ok b { color: var(--good); }

.crit { background: var(--bad-bg); border: 1px solid #fecdca; border-radius: 12px; padding: 12px 14px; margin-bottom: 8px; font-size: 14px; }
.crit b { color: var(--bad); }

.stage { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin-bottom: 8px; }
.stage-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.stage-top b { font-size: 15px; }
.stage .why { font-size: 14px; color: var(--ink-2); margin-top: 4px; }
.stage .quote { font-size: 13px; color: var(--ink); background: var(--bg); border-radius: 8px; padding: 6px 10px; margin-top: 6px; font-style: italic; }
.try { font-size: 14px; color: var(--good); margin-top: 6px; }
.try::before { content: 'Try: '; font-weight: 700; }

.fb { border-left: 3px solid var(--line); padding: 2px 0 2px 12px; margin: 4px 0 14px; font-size: 14px; }
.fb.good { border-color: var(--good); }
.fb.ok { border-color: var(--ink-3); }
.fb.weak { border-color: var(--warn); }
.fb.critical { border-color: var(--bad); }
.fb .tag { font-size: 11px; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; }
.fb.good .tag { color: var(--good); }
.fb.weak .tag { color: var(--warn); }
.fb.critical .tag { color: var(--bad); }
.fb.ok .tag { color: var(--ink-2); }
.fb .better { color: var(--good); margin-top: 4px; }
.fb .better::before { content: 'Better: '; font-weight: 700; }

ul.clean { margin: 0; padding-left: 18px; font-size: 14px; }
ul.clean li { margin-bottom: 4px; }
.model { white-space: pre-wrap; background: #f4f8f5; border-radius: 12px; padding: 12px 14px; font-size: 14px; }
.lang-issue { font-size: 14px; margin-bottom: 10px; }
.lang-issue .q { background: var(--bad-bg); border-radius: 6px; padding: 1px 6px; }
.lang-issue .fix { background: var(--good-bg); border-radius: 6px; padding: 1px 6px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 16px 0 4px; border-bottom: 1px solid var(--line); }
.tabs button { border: 0; background: none; padding: 8px 10px; cursor: pointer; font-weight: 600; color: var(--ink-2); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button.on { color: var(--blue-2); border-color: var(--blue-2); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* internal notes - steps the customer cannot see */
.note-btn { border: 1px solid var(--line); background: #fff; color: var(--ink-2); font-weight: 700; font-size: 12px; height: 44px; padding: 0 10px; border-radius: 12px; cursor: pointer; flex: none; }
.note-btn.on { background: #fff4d6; border-color: #f5c451; color: #8a5a00; }
.composer textarea.note-mode { background: #fffaeb; border-color: #f5c451; }
.note-line { margin: 8px 0 10px auto; max-width: 82%; background: #fffaeb; border: 1px dashed #f5c451; color: #6b4a00; border-radius: 10px; padding: 7px 11px; font-size: 13px; white-space: pre-wrap; }