:root { --bg:#f3f4f6; --panel:#fff; --line:#e5e7eb; --txt:#111827; --mut:#6b7280; --pri:#0f766e; --pri-d:#115e59; --in:#ffffff; --out:#d9f7e8; --warn:#b45309; --err:#b91c1c; }
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { font: 14px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--txt); background: var(--bg); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; border: 1px solid var(--line); background: #fff; border-radius: 6px; padding: 6px 10px; }
button:hover { background: #f9fafb; }
button.primary { background: var(--pri); color: #fff; border-color: var(--pri); }
button.primary:hover { background: var(--pri-d); }
button.danger { color: var(--err); }
input, select, textarea { border: 1px solid #d1d5db; border-radius: 6px; padding: 6px 8px; background: #fff; max-width: 100%; }
textarea { resize: vertical; }
.hidden { display: none !important; }
.muted { color: var(--mut); }
.small { font-size: 12px; }
.err { color: var(--err); }

.login { max-width: 340px; margin: 12vh auto; background: var(--panel); padding: 24px; border-radius: 10px; border: 1px solid var(--line); }
.login h1 { font-size: 20px; margin: 0 0 4px; }
.login label { display: block; margin: 12px 0 4px; }
.login input { width: 100%; }
.login button { width: 100%; margin-top: 16px; padding: 9px; }

.shell { display: flex; flex-direction: column; height: 100%; }
.topbar { display: flex; align-items: center; gap: 6px; padding: 8px 14px; background: var(--pri); color: #fff; }
.topbar .brand { font-weight: 600; margin-right: 14px; }
.topbar button { background: transparent; color: #fff; border-color: transparent; }
.topbar button.active { background: rgba(255,255,255,.2); }
.topbar .spacer { flex: 1; }
.banner { background: #fef3c7; color: #78350f; padding: 6px 14px; font-size: 12px; border-bottom: 1px solid #fde68a; }
.main { flex: 1; min-height: 0; }

.inbox { display: grid; grid-template-columns: 320px minmax(0,1fr) 280px; height: 100%; }
.col { background: var(--panel); border-right: 1px solid var(--line); display: flex; flex-direction: column; min-height: 0; }
.filters { padding: 8px; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.filters input { grid-column: 1 / -1; }
.filters select { width: 100%; }
.convlist { overflow-y: auto; flex: 1; }
.conv { padding: 9px 12px; border-bottom: 1px solid var(--line); cursor: pointer; }
.conv:hover { background: #f9fafb; }
.conv.sel { background: #e6f4f1; }
.conv .row1 { display: flex; justify-content: space-between; gap: 8px; }
.conv .nm { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv .lm { color: var(--mut); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin: 2px 0 4px; }
.conv .row3 { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; background: var(--err); margin-right: 4px; }
.badge { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 10px; background: #e5e7eb; color: #374151; }
.badge.nuevo { background: #dbeafe; color: #1e40af; }
.badge.en_atencion { background: #fef3c7; color: #92400e; }
.badge.resuelto { background: #d1fae5; color: #065f46; }
.tag { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 10px; color: #fff; }
.tag.off { background: #fff !important; color: var(--mut) !important; border: 1px dashed #9ca3af; cursor: pointer; }
.tag.on { cursor: pointer; }
.demo { font-size: 10px; background: #fde68a; color: #78350f; padding: 0 5px; border-radius: 3px; margin-left: 4px; }

.chat { display: flex; flex-direction: column; min-height: 0; background: #efeae2; border-right: 1px solid var(--line); }
.chat-head { background: var(--panel); padding: 8px 12px; border-bottom: 1px solid var(--line); }
.chat-head .t1 { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.chat-head .t1 h2 { margin: 0; font-size: 16px; }
.chat-head .t2 { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; align-items: center; }
.msgs { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 6px; }
.msg { max-width: 70%; padding: 6px 10px; border-radius: 8px; background: var(--in); box-shadow: 0 1px 1px rgba(0,0,0,.08); white-space: pre-wrap; word-wrap: break-word; }
.msg.saliente { align-self: flex-end; background: var(--out); }
.msg .meta { font-size: 11px; color: var(--mut); margin-top: 3px; text-align: right; }
.msg .meta .err { color: var(--err); }
.daysep { align-self: center; font-size: 11px; background: #e1dccf; padding: 1px 10px; border-radius: 10px; margin: 6px 0; }
.composer { background: var(--panel); border-top: 1px solid var(--line); padding: 8px; display: flex; gap: 8px; }
.composer textarea { flex: 1; height: 56px; }
.composer-note { padding: 6px 10px; font-size: 12px; background: #fef3c7; color: #78350f; }
.empty { margin: auto; color: var(--mut); text-align: center; padding: 20px; }

.side { overflow-y: auto; padding: 10px 12px; }
.side h3 { font-size: 13px; margin: 12px 0 6px; text-transform: uppercase; letter-spacing: .04em; color: var(--mut); }
.side h3:first-child { margin-top: 0; }
.note { background: #fffbeb; border: 1px solid #fde68a; border-radius: 6px; padding: 6px 8px; margin-bottom: 6px; white-space: pre-wrap; }
.note .meta { font-size: 11px; color: var(--mut); }
.side textarea { width: 100%; height: 64px; }
.ev { font-size: 12px; color: var(--mut); margin-bottom: 3px; }

.page { padding: 18px 22px; overflow-y: auto; height: 100%; }
.page h2 { margin: 0 0 12px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 10px; margin-bottom: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px; }
.card .v { font-size: 22px; font-weight: 600; margin-top: 2px; }
.card .l { color: var(--mut); font-size: 12px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 14px; }
table { border-collapse: collapse; width: 100%; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); }
th { background: #f9fafb; font-size: 12px; color: var(--mut); }
td.n, th.n { text-align: right; }
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.bars { display: flex; align-items: flex-end; gap: 3px; height: 150px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 10px 10px 4px; overflow-x: auto; }
.barcol { flex: 1; min-width: 14px; display: flex; flex-direction: column; justify-content: flex-end; align-items: stretch; height: 100%; }
.bar { width: 100%; min-height: 1px; }
.bar.in { background: #60a5fa; }
.bar.out { background: #34d399; }
.barlbl { font-size: 9px; color: var(--mut); text-align: center; margin-top: 2px; }
.legend { font-size: 12px; margin: 6px 0 14px; }
.legend i { display: inline-block; width: 10px; height: 10px; margin: 0 4px 0 10px; vertical-align: middle; }
.form { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px; display: flex; gap: 8px; flex-wrap: wrap; align-items: end; margin-bottom: 16px; }
.form label { display: flex; flex-direction: column; font-size: 12px; color: var(--mut); gap: 2px; }
.sec { margin-top: 22px; }

@media (max-width: 1000px) { .inbox { grid-template-columns: 280px minmax(0,1fr); } .inbox .side { display: none; } }

.msg-media { display: block; max-width: 100%; max-height: 280px; border-radius: 6px; margin: 2px 0 4px; }
.msg-audio { display: block; width: 100%; max-width: 280px; margin: 2px 0 4px; }
.msg-caption { margin-top: 2px; }

.banner.ok { background: #e8f5e9; border-color: #81c784; color: #1b5e20; }
.banner.err { background: #fdecea; border-color: #e57373; color: #b71c1c; }