:root {
  --bg: #e8edef; --panel: #f8fafa; --ink: #12232e; --muted: #5d6e78; --line: #cdd8dc;
  --teal: #0e6e63; --hot: #b45309; --human: #2f5da8; --closed: #8a979e; --out: #d3ece6; --in: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e171c; --panel: #16232a; --ink: #e6eef1; --muted: #8fa2ac; --line: #263741;
          --teal: #3fb8a5; --hot: #e39a4a; --human: #7ea6e8; --closed: #6c7b83; --out: #17493f; --in: #1d2f38; }
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.45 "Avenir Next", "Segoe UI", system-ui, sans-serif; }
button, input, textarea, select { font: inherit; color: inherit; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

#fatal { background: #fde8e4; color: #7a1d0c; padding: .7rem 1rem; border-bottom: 1px solid #e9b4a8; position: sticky; top: 0; z-index: 5; }
#fatal[hidden] { display: none; }

/* login */
#login { display: grid; place-items: center; height: 100%; padding: 1rem; }
#login form { background: var(--panel); border: 1px solid var(--line); padding: 1.75rem; border-radius: 10px; width: min(360px, 100%); }
#login h1 { margin: 0 0 .25rem; font-size: 1.4rem; }
#login p { margin: 0 0 1rem; color: var(--muted); }
#login input { width: 100%; padding: .6rem .7rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); margin-bottom: .75rem; }
.btn { background: var(--teal); color: #fff; border: 0; padding: .55rem 1rem; border-radius: 6px; cursor: pointer; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.err { color: var(--hot); min-height: 1.3em; margin: .5rem 0 0; font-size: .9rem; }
.ok { color: var(--teal); min-height: 1.3em; margin: .5rem 0 0; font-size: .9rem; }

/* layout */
#app { display: none; height: 100%; grid-template-columns: 340px 1fr; }
#list { background: var(--panel); border-right: 1px solid var(--line); display: flex; flex-direction: column; min-height: 0; }
#list header { padding: 1rem; border-bottom: 1px solid var(--line); }
#list h1 { margin: 0 0 .6rem; font-size: 1.15rem; }
.tabs { display: flex; gap: .35rem; flex-wrap: wrap; }
#nav { margin-bottom: .6rem; }
.tab { border: 1px solid var(--line); background: transparent; border-radius: 99px; padding: .15rem .65rem; cursor: pointer; font-size: .85rem; color: var(--muted); }
.tab[aria-pressed=true] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
#leads { overflow-y: auto; flex: 1; }
.lead { display: block; width: 100%; text-align: left; background: none; border: 0; border-bottom: 1px solid var(--line); padding: .8rem 1rem; cursor: pointer; border-left: 4px solid transparent; }
.lead[aria-current=true] { background: var(--bg); }
.lead.s-hot { border-left-color: var(--hot); } .lead.s-human { border-left-color: var(--human); }
.lead.s-nurture { border-left-color: var(--teal); } .lead.s-closed { border-left-color: var(--closed); }
.lead .top { display: flex; justify-content: space-between; gap: .5rem; }
.lead .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lead .when { color: var(--muted); font-size: .8rem; white-space: nowrap; }
.lead .snip { color: var(--muted); font-size: .88rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty { padding: 2rem 1rem; color: var(--muted); }
#foot { padding: .6rem 1rem; border-top: 1px solid var(--line); display: flex; gap: .5rem; }

/* conversation */
#chat { display: flex; flex-direction: column; min-height: 0; min-width: 0; }
#chat > .empty { margin: auto; text-align: center; }
#chead { padding: .8rem 1.1rem; background: var(--panel); border-bottom: 1px solid var(--line); display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
#chead .who { flex: 1; min-width: 160px; }
#chead .who b { display: block; font-size: 1.05rem; }
#chead .who span { color: var(--muted); font-size: .88rem; }
select { padding: .35rem .5rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }
#back { display: none; }
#facts { padding: .55rem 1.1rem; background: var(--panel); border-bottom: 1px solid var(--line); color: var(--muted); font-size: .9rem; display: flex; gap: 1.25rem; flex-wrap: wrap; }
#facts b { color: var(--ink); font-weight: 600; }
#msgs { flex: 1; overflow-y: auto; padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: .4rem; }
.m { max-width: min(520px, 82%); padding: .5rem .75rem; border-radius: 10px; white-space: pre-wrap; overflow-wrap: anywhere; border: 1px solid var(--line); }
.m.in { background: var(--in); align-self: flex-start; border-bottom-left-radius: 2px; }
.m.out { background: var(--out); align-self: flex-end; border-bottom-right-radius: 2px; }
.m time { display: block; font-size: .72rem; color: var(--muted); margin-top: .15rem; }
#composer { padding: .75rem 1.1rem; background: var(--panel); border-top: 1px solid var(--line); }
#composer .row { display: flex; gap: .5rem; }
#composer textarea { flex: 1; resize: none; padding: .55rem .7rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }

/* campaigns */
.pane { flex: 1; overflow-y: auto; padding: 1rem 1.1rem; display: grid; gap: 1rem; align-content: start; }
.sec { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 1rem; max-width: 720px; }
.sec h2 { margin: 0 0 .4rem; font-size: 1.05rem; }
.note { color: var(--muted); font-size: .88rem; margin: 0 0 .7rem; }
.f { display: grid; gap: .25rem; margin-bottom: .65rem; font-size: .88rem; color: var(--muted); }
.pane input:not([type=checkbox]), .pane select, .pane textarea { width: 100%; padding: .5rem .65rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; }
.check { display: flex; gap: .5rem; align-items: flex-start; margin: .5rem 0 .75rem; font-size: .92rem; }
.cmp { border-top: 1px solid var(--line); padding: .7rem 0; display: flex; justify-content: space-between; gap: .75rem; flex-wrap: wrap; }
.cmp b { display: block; }
.cmp span { color: var(--muted); font-size: .86rem; }
.cmp .btn { margin-left: .6rem; }

@media (max-width: 760px) {
  #app { grid-template-columns: 1fr; }
  #chat { display: none; }
  #app.open #list { display: none; }
  #app.open #chat { display: flex; }
  #back { display: inline-block; }
  .two { grid-template-columns: 1fr; }
}