/* AI Sales Copilot — premium light chat UI (ChatGPT-style). */

:root{
  --bg:#ffffff;
  --bg-side:#f7f7f8;
  --bg-soft:#f4f4f5;
  --bg-user:#eef0f4;
  --ink:#1e2127;
  --ink-soft:#494f59;
  --muted:#8b909b;
  --line:#ececef;
  --line-2:#e3e4e8;
  --primary:#4f46e5;
  --primary-ink:#4338ca;
  --primary-soft:#eef0fe;
  --hard:#7c3aed;
  --say-bg:#f6f7ff;
  --say-bar:#4f46e5;
  --say-ink:#23263a;
  --ok:#0f9d58;
  --bad:#dc2626;
  --radius:18px;
  --shadow-sm:0 1px 2px rgba(20,23,28,.05);
  --shadow:0 6px 24px rgba(20,23,28,.07);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Inter","Helvetica Neue",Arial,sans-serif;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --side-w:264px;
  color-scheme:light;
}

*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;line-height:1.5}
.muted{color:var(--muted)}

/* brand mark */
.brand-mark{width:26px;height:26px;border-radius:8px;flex:0 0 auto;position:relative;
  background:linear-gradient(135deg,var(--primary),#7c83f7);box-shadow:inset 0 0 0 2px rgba(255,255,255,.32)}
.brand-mark::after{content:"";position:absolute;inset:7px 7px auto 7px;height:3px;border-radius:3px;background:#fff;box-shadow:0 5px 0 #fff}

/* ---------- App shell ---------- */
.app{display:flex;height:100dvh;overflow:hidden}

/* ---------- Sidebar ---------- */
.sidebar{width:var(--side-w);flex:0 0 auto;background:var(--bg-side);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:14px 12px;gap:14px}
.side-head{display:flex;align-items:center;gap:10px;padding:4px 6px}
.brand-name{font-weight:650;letter-spacing:-.01em}
.new-btn{display:flex;align-items:center;gap:8px;width:100%;justify-content:flex-start;
  background:var(--bg);border:1px solid var(--line-2);border-radius:12px;padding:11px 13px;
  font:600 14px/1 var(--sans);color:var(--ink);cursor:pointer;box-shadow:var(--shadow-sm)}
.new-btn:hover{background:#fff;border-color:#d6d8de}
.side-section{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;gap:8px;overflow:hidden}
.side-label{font:600 11px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:0 6px}
.side-objections{display:flex;flex-direction:column;gap:2px;overflow-y:auto;padding-right:2px}
.side-obj{text-align:left;background:transparent;border:0;border-radius:9px;padding:9px 10px;
  font:500 13.5px/1.3 var(--sans);color:var(--ink-soft);cursor:pointer}
.side-obj:hover{background:#ededf0;color:var(--ink)}
.side-account{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding:12px 6px 4px}
.avatar-sm{width:28px;height:28px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;
  background:var(--primary);color:#fff;font:600 13px/1 var(--sans)}
.acct-name{flex:1 1 auto;font-size:13.5px;font-weight:550;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.acct-out{color:var(--muted);display:grid;place-items:center;padding:6px;border-radius:8px}
.acct-out:hover{color:var(--ink);background:#ededf0}

.scrim{position:fixed;inset:0;background:rgba(20,23,28,.34);z-index:30;border:0}

/* ---------- Main ---------- */
.main{flex:1 1 auto;display:flex;flex-direction:column;min-width:0;background:var(--bg)}
.main-top{display:flex;align-items:center;gap:8px;height:52px;padding:0 12px;border-bottom:1px solid var(--line)}
.main-title{font-weight:600;font-size:15px;flex:1 1 auto;text-align:center}
.icon-btn{background:transparent;border:0;color:var(--ink-soft);width:38px;height:38px;border-radius:10px;
  display:grid;place-items:center;cursor:pointer}
.icon-btn:hover{background:var(--bg-soft);color:var(--ink)}
.menu-btn{display:none}

/* ---------- Thread ---------- */
.thread{flex:1 1 auto;overflow-y:auto;scroll-behavior:smooth}
.thread-inner,.empty,.msg{max-width:760px;margin:0 auto;padding-left:20px;padding-right:20px}

/* empty state */
.empty{display:flex;flex-direction:column;align-items:center;text-align:center;padding-top:9vh}
.empty-mark{width:46px;height:46px;border-radius:13px}
.empty-mark::after{inset:13px 12px auto 12px;height:4px;box-shadow:0 8px 0 #fff}
.empty-title{font-size:25px;font-weight:650;letter-spacing:-.02em;margin:20px 0 6px}
.empty-sub{color:var(--muted);margin:0 0 26px;font-size:15px}
.suggest-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;width:100%;max-width:560px}
.suggest{background:var(--bg);border:1px solid var(--line-2);border-radius:13px;padding:13px 15px;
  text-align:left;font:540 14px/1.3 var(--sans);color:var(--ink);cursor:pointer;transition:border-color .12s,background .12s,transform .04s}
.suggest:hover{border-color:#c9ccff;background:var(--primary-soft)}
.suggest:active{transform:translateY(1px)}

/* messages */
.msg{display:flex;gap:14px;padding-top:22px;padding-bottom:6px;animation:rise .18s ease}
@keyframes rise{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
.msg-user{justify-content:flex-end}
.bubble-user{background:var(--bg-user);color:var(--ink);border-radius:18px 18px 6px 18px;
  padding:11px 15px;font-size:15px;max-width:78%;white-space:pre-wrap;word-wrap:break-word}
.msg-assistant{align-items:flex-start}
.avatar{width:30px;height:30px;border-radius:9px;margin-top:2px}
.bubble{flex:1 1 auto;min-width:0}

/* typing dots */
.typing{display:flex;gap:5px;padding:8px 2px}
.typing span{width:7px;height:7px;border-radius:50%;background:#c4c7d0;animation:blink 1.2s infinite ease-in-out}
.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}

.ans-meta{font:500 11px/1.4 var(--sans);color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}
.situation{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:12px}

/* say-this — the signature element */
.say-block{position:relative;background:var(--say-bg);border:1px solid var(--line-2);border-left:3px solid var(--say-bar);
  border-radius:12px;padding:13px 15px}
.say-label{font:700 10.5px/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--primary-ink);margin-bottom:10px}
.say-list{display:flex;flex-direction:column;gap:8px}
.say-line{font-family:var(--serif);font-size:18.5px;line-height:1.45;color:var(--say-ink);
  background:#fff;border:1px solid var(--line-2);border-radius:10px;padding:11px 40px 11px 14px;
  cursor:pointer;position:relative;transition:border-color .1s,box-shadow .1s}
.say-line:hover{border-color:#c9ccff;box-shadow:var(--shadow-sm)}
.say-line::after{content:"copy";position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-family:var(--sans);font-size:10px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);opacity:0;transition:opacity .12s}
.say-line:hover::after{opacity:1}
.say-line.copied::after{content:"copied ✓";color:var(--ok);opacity:1}

.extras{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.extra{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:10px 13px}
.extra.warn{background:#fff7f6;border-color:#f6d9d4}
.extra-label{display:block;font:700 10px/1 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.extra.warn .extra-label{color:var(--bad)}
.extra p{margin:0;font-size:14.5px;color:var(--ink-soft)}

.feedback{display:flex;align-items:center;gap:8px;margin-top:13px}
.fb-btn{border:1px solid var(--line-2);background:var(--bg);font:550 12.5px/1 var(--sans);padding:7px 11px;border-radius:999px;cursor:pointer;color:var(--ink-soft)}
.fb-btn:hover{background:#fff;border-color:#d2d4da}
.fb-btn.picked{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-ink);font-weight:650}
.fb-thanks{font-size:12.5px;color:var(--ok);font-weight:600}

.answer-error{background:#fff7f6;border:1px solid #f6d9d4;color:var(--bad);border-radius:10px;padding:11px 13px;font-size:14px}

/* ---------- Composer ---------- */
.composer-wrap{flex:0 0 auto;padding:8px 20px 14px;background:linear-gradient(to top,var(--bg) 70%,transparent)}
.quickbar{display:flex;gap:7px;overflow-x:auto;max-width:760px;margin:0 auto 9px;padding-bottom:2px;scrollbar-width:thin}
.quickbar::-webkit-scrollbar{height:5px}.quickbar::-webkit-scrollbar-thumb{background:#dadce2;border-radius:9px}
.quickchip{flex:0 0 auto;background:var(--bg-soft);border:1px solid var(--line-2);border-radius:999px;
  padding:7px 12px;font:540 13px/1 var(--sans);color:var(--ink-soft);cursor:pointer;white-space:nowrap}
.quickchip:hover{background:var(--primary-soft);border-color:#c9ccff;color:var(--primary-ink)}

.composer{max-width:760px;margin:0 auto;background:var(--bg);border:1px solid var(--line-2);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:10px 12px 8px;transition:border-color .12s,box-shadow .12s}
.composer:focus-within{border-color:#c9ccff;box-shadow:0 6px 24px rgba(79,70,229,.12)}
.composer textarea{width:100%;border:0;outline:0;resize:none;background:transparent;color:var(--ink);
  font:400 15.5px/1.5 var(--sans);max-height:200px;padding:4px 4px 0}
.composer textarea::placeholder{color:var(--muted)}
.composer-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:6px}

.hard-pill{display:inline-flex;align-items:center;gap:8px;cursor:pointer;user-select:none;
  border:1px solid var(--line-2);border-radius:999px;padding:6px 11px;font:550 12.5px/1 var(--sans);color:var(--ink-soft)}
.hard-pill input{position:absolute;opacity:0;width:0;height:0}
.hard-dot{width:9px;height:9px;border-radius:50%;background:#cdd0d8;transition:background .15s,box-shadow .15s}
.hard-pill input:checked ~ span{color:var(--hard)}
.hard-pill input:checked + .hard-dot{background:var(--hard);box-shadow:0 0 0 3px rgba(124,58,237,.16)}
.hard-pill:has(input:checked){border-color:#d9ccfb;background:#f6f1fe}
.hard-pill input:focus-visible + .hard-dot{outline:2px solid var(--hard);outline-offset:2px}

.send-btn{width:36px;height:36px;border-radius:50%;border:0;background:var(--primary);color:#fff;
  display:grid;place-items:center;cursor:pointer;transition:background .12s,transform .04s,opacity .12s}
.send-btn:hover{background:var(--primary-ink)}
.send-btn:active{transform:translateY(1px)}
.send-btn:disabled{background:#c9cbd3;cursor:default}

.composer-hint{max-width:760px;margin:8px auto 0;text-align:center;font-size:11.5px;color:var(--muted)}

/* ---------- Login ---------- */
.login-body{min-height:100dvh;display:grid;place-items:center;padding:24px;background:var(--bg-side)}
.login-card{background:var(--bg);border:1px solid var(--line-2);border-radius:18px;box-shadow:var(--shadow);padding:30px 28px;width:100%;max-width:360px}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.login-brand h1{font-size:18px;margin:0}
.login-brand p{margin:2px 0 0;font-size:13px;color:var(--muted)}
.login-card label{display:block;font-size:13px;font-weight:600;margin:12px 0 6px}
.login-card input{width:100%;font:400 15px/1.45 var(--sans);color:var(--ink);background:var(--bg-soft);
  border:1px solid var(--line-2);border-radius:10px;padding:11px 13px}
.login-card input:focus{outline:2px solid var(--primary);outline-offset:1px;background:#fff;border-color:transparent}
.btn{font:650 15px/1 var(--sans);border:0;border-radius:11px;padding:12px 20px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:9px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-ink)}
.btn-block{width:100%;margin-top:14px}
.alert{background:#fff7f6;border:1px solid #f6d9d4;color:var(--bad);font-size:13.5px;padding:10px 12px;border-radius:10px;margin-bottom:6px}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;z-index:40;transform:translateX(-100%);transition:transform .2s ease;box-shadow:var(--shadow)}
  .app.nav-open .sidebar{transform:none}
  .menu-btn{display:grid}
  .thread-inner,.empty,.msg,.composer,.quickbar,.composer-hint{max-width:100%}
  .suggest-grid{grid-template-columns:1fr}
  .empty{padding-top:6vh}
}
@media (min-width:861px){
  .scrim{display:none!important}
  .main-title{display:none}
}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}