:root {
  --bg: #0f1115;
  --bg-elev: #161a21;
  --bg-elev-2: #1d222b;
  --border: #262c37;
  --text: #e6e9ef;
  --muted: #8b94a3;
  --primary: #3b82f6;
  --primary-hover: #2f6fe0;
  --danger: #ef4444;
  --green: #22c55e;
  --amber: #f59e0b;
  --in-bubble: #232936;
  --out-bubble: #2f6fe0;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }

/* ---- Login ---- */
.login-overlay {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(1200px 600px at 50% -10%, #1b2130, var(--bg));
  z-index: 10;
}
.login-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 340px;
  display: flex; flex-direction: column; gap: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.login-logo { font-size: 40px; text-align: center; }
.login-card h1 { margin: 0; font-size: 20px; text-align: center; }
.login-card p { margin: 0 0 6px; text-align: center; font-size: 13px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.login-card input {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  padding: 10px 12px; border-radius: 8px; font-size: 14px;
}
.login-card input:focus { outline: none; border-color: var(--primary); }
.login-card button {
  margin-top: 6px; background: var(--primary); color: #fff; border: none;
  padding: 11px; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer;
}
.login-card button:hover { background: var(--primary-hover); }
.login-error { color: var(--danger); font-size: 13px; text-align: center; min-height: 16px; }

/* ---- App layout ---- */
.app { display: grid; grid-template-columns: 340px 1fr; height: 100vh; }

/* ---- Sidebar ---- */
.sidebar {
  background: var(--bg-elev);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; min-height: 0;
}
.sidebar-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px; border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 16px; }
.me { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.me-name { color: var(--muted); }
.link-btn { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 13px; padding: 0; }

.search-box { padding: 12px 12px 0; }
.search-box input {
  width: 100%; background: var(--bg); border: 1px solid var(--border); color: var(--text);
  padding: 9px 12px; border-radius: 8px; font-size: 13px;
}
.search-box input:focus { outline: none; border-color: var(--primary); }
.filters { display: flex; gap: 6px; padding: 12px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.filter {
  background: var(--bg-elev-2); border: 1px solid var(--border); color: var(--muted);
  padding: 5px 12px; border-radius: 999px; font-size: 12px; cursor: pointer;
}
.filter.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.ticket-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.ticket-item {
  padding: 14px 16px; border-bottom: 1px solid var(--border); cursor: pointer;
  display: flex; gap: 12px; align-items: flex-start;
}
.ticket-item:hover { background: var(--bg-elev-2); }
.ticket-item.active { background: var(--bg-elev-2); box-shadow: inset 3px 0 0 var(--primary); }
.avatar {
  width: 38px; height: 38px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6); color: #fff; font-weight: 600; font-size: 15px;
}
.ticket-body { flex: 1; min-width: 0; }
.ticket-row { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.ticket-name { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ticket-time { font-size: 11px; color: var(--muted); flex-shrink: 0; }
.ticket-preview { font-size: 13px; color: var(--muted); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ticket-meta { display: flex; align-items: center; gap: 6px; margin-top: 6px; }
.badge { font-size: 10px; padding: 2px 7px; border-radius: 999px; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.badge.open { background: rgba(245,158,11,.15); color: var(--amber); }
.badge.assigned { background: rgba(59,130,246,.15); color: var(--primary); }
.badge.closed { background: rgba(139,148,163,.15); color: var(--muted); }
.badge.warranty { background: rgba(139,92,246,.18); color: #b794f6; }
.unread-dot {
  margin-left: auto; background: var(--green); color: #04210f; font-size: 11px; font-weight: 700;
  min-width: 18px; height: 18px; border-radius: 999px; display: flex; align-items: center; justify-content: center; padding: 0 5px;
}

/* ---- Conversation ---- */
.conversation { display: flex; flex-direction: column; min-height: 0; background: var(--bg); }
.empty-state { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--muted); gap: 12px; }
.empty-emoji { font-size: 48px; }

.thread-wrap { display: flex; flex-direction: column; height: 100vh; min-height: 0; }
.thread-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-bottom: 1px solid var(--border); background: var(--bg-elev);
}
.thread-user { display: flex; align-items: center; gap: 12px; }
.thread-name { font-weight: 600; font-size: 15px; }
.thread-sub { font-size: 12px; }
.thread-actions { display: flex; align-items: center; gap: 8px; }
.status-badge { font-size: 12px; color: var(--muted); margin-right: 4px; }
.cat-chip { background: rgba(139,92,246,.18); color: #b794f6; font-size: 11px; padding: 1px 7px; border-radius: 999px; }
.lang-chip { font-size: 10px; font-weight: 700; padding: 1px 6px; border-radius: 4px; letter-spacing: .04em; }
.lang-chip.lang-ru { background: rgba(59,130,246,.18); color: #7cb0ff; }
.lang-chip.lang-uz { background: rgba(34,197,94,.18); color: #6ee7a5; }
.lang-chip.lang-tg { background: rgba(245,158,11,.18); color: #f6c667; }
.assign-select {
  background: var(--bg-elev-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 10px; font-size: 13px; cursor: pointer; max-width: 160px;
}
.assign-select:focus { outline: none; border-color: var(--primary); }

.btn { border: none; border-radius: 8px; padding: 8px 14px; font-size: 13px; font-weight: 600; cursor: pointer; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost { background: var(--bg-elev-2); color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--primary); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid rgba(239,68,68,.4); }
.btn-danger:hover { background: rgba(239,68,68,.12); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.messages { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 68%; padding: 9px 13px; border-radius: 14px; font-size: 14px; line-height: 1.4; word-wrap: break-word; white-space: pre-wrap; }
.msg .msg-meta { font-size: 10px; opacity: .7; margin-top: 4px; text-align: right; }
.msg.in { align-self: flex-start; background: var(--in-bubble); border-bottom-left-radius: 4px; }
.msg.out { align-self: flex-end; background: var(--out-bubble); color: #fff; border-bottom-right-radius: 4px; }
.msg-author { font-size: 11px; opacity: .75; margin-bottom: 2px; }
.msg-img { max-width: 260px; max-height: 320px; border-radius: 10px; display: block; cursor: pointer; }
.msg-caption { margin-top: 5px; font-size: 13px; }
.msg-file { display: inline-flex; align-items: center; gap: 6px; color: inherit; text-decoration: underline; font-size: 14px; word-break: break-all; }
.msg.in .msg-file { color: var(--text); }

.day-sep { align-self: center; font-size: 11px; color: var(--muted); background: var(--bg-elev-2); padding: 3px 10px; border-radius: 999px; margin: 6px 0; }

.composer { display: flex; gap: 10px; padding: 14px 20px; border-top: 1px solid var(--border); background: var(--bg-elev); align-items: flex-end; }
.composer textarea {
  flex: 1; background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 11px 13px; font-size: 14px; resize: none; max-height: 160px; font-family: inherit;
}
.composer textarea:focus { outline: none; border-color: var(--primary); }
.composer textarea:disabled { opacity: .5; }
.attach-btn {
  background: var(--bg-elev-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; width: 42px; height: 42px; font-size: 18px; cursor: pointer; flex-shrink: 0;
}
.attach-btn:hover { border-color: var(--primary); }
.attach-btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---- Admin modal ---- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 20;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.55);
}
.modal {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: 14px;
  width: 460px; max-width: calc(100vw - 32px); max-height: calc(100vh - 64px); overflow-y: auto;
  padding: 20px; box-shadow: 0 24px 70px rgba(0,0,0,.5);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.modal-head h2 { margin: 0; font-size: 18px; }
.operator-list { list-style: none; margin: 0 0 18px; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.operator-row {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px;
  background: var(--bg-elev-2); border: 1px solid var(--border); border-radius: 10px;
}
.operator-row .op-name { font-weight: 600; font-size: 14px; }
.operator-row .op-login { color: var(--muted); font-size: 12px; }
.operator-row .op-role { font-size: 10px; padding: 2px 7px; border-radius: 999px; font-weight: 600; text-transform: uppercase; }
.op-role.admin { background: rgba(239,68,68,.16); color: #ff8a8a; }
.op-role.operator { background: rgba(59,130,246,.16); color: #7cb0ff; }
.op-tg { font-size: 11px; color: var(--muted); }
.op-tg.linked { color: #6ee7a5; }
.op-unlink { background: transparent; border: 1px solid var(--border); color: var(--muted); border-radius: 6px; width: 22px; height: 22px; font-size: 12px; cursor: pointer; padding: 0; }
.op-unlink:hover { border-color: var(--danger); color: var(--danger); }
.op-del { margin-left: auto; background: transparent; border: 1px solid rgba(239,68,68,.4); color: var(--danger); border-radius: 8px; padding: 5px 10px; font-size: 12px; cursor: pointer; }
.op-del:hover { background: rgba(239,68,68,.12); }
.op-del:disabled { opacity: .4; cursor: not-allowed; }
.add-operator h3 { margin: 0 0 10px; font-size: 14px; color: var(--muted); }
.add-operator .form-row { display: flex; gap: 8px; margin-bottom: 8px; }
.add-operator input[type="text"], .add-operator input:not([type]) {
  flex: 1; min-width: 0; background: var(--bg); border: 1px solid var(--border); color: var(--text);
  padding: 9px 11px; border-radius: 8px; font-size: 13px;
}
.add-operator input:focus { outline: none; border-color: var(--primary); }
.admin-check { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); white-space: nowrap; }
.add-operator .btn-primary { width: 100%; padding: 10px; }

@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; }
  .conversation { position: fixed; inset: 0; z-index: 5; }
}