:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e2229;
  --border: #2a2e37;
  --text: #e8e9ec;
  --muted: #9aa0ab;
  --accent: #d97757;
  --accent-hover: #c96545;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; background: var(--bg); color: var(--text); }
.hidden { display: none !important; }
.screen { min-height: 100vh; }

/* Login (identique au portail) */
#login-screen { display: flex; align-items: center; justify-content: center; }
.login-box { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 40px; width: 320px; text-align: center; }
.login-box h1 { margin: 0 0 4px; font-size: 22px; }
.subtitle { color: var(--muted); margin: 0 0 24px; font-size: 14px; }
.login-box input { width: 100%; padding: 10px 12px; margin-bottom: 12px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 14px; }
.login-box button { width: 100%; padding: 10px; background: var(--accent); border: none; border-radius: 8px; color: white; font-size: 14px; cursor: pointer; }
.login-box button:hover { background: var(--accent-hover); }
.error { color: #e05252; font-size: 13px; margin-top: 8px; min-height: 16px; }

/* Topbar */
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 14px 24px; border-bottom: 1px solid var(--border); background: var(--panel); }
.brand { font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--muted); }
.topbar-actions button { padding: 8px 14px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; color: var(--text); cursor: pointer; font-size: 13px; }
.topbar-actions button:hover { border-color: var(--accent); }

/* Kanban board */
.board { display: flex; gap: 16px; padding: 24px; align-items: flex-start; }
.board-col { flex: 1; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 14px; min-height: 200px; }
.board-col h2 { margin: 0 0 12px; font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.board-col-list { display: flex; flex-direction: column; gap: 8px; }
.ticket-card { background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px; cursor: pointer; font-size: 14px; }
.ticket-card:hover { border-color: var(--accent); }
.ticket-card .t-subject { font-weight: 500; margin-bottom: 4px; }
.ticket-card .t-meta { font-size: 12px; color: var(--muted); }
.empty-hint { color: var(--muted); font-size: 13px; padding: 8px 0; }

/* Detail view */
.detail { padding: 24px; }
#back-to-board { padding: 8px 14px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; color: var(--text); cursor: pointer; font-size: 13px; margin-bottom: 14px; }
.ticket-meta-row { display: flex; gap: 8px; margin-bottom: 20px; }
.ticket-meta-row select { padding: 8px 10px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 13px; }

.detail-columns { display: flex; gap: 20px; }
.thread-col, .agent-col { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.thread-col h3, .agent-col h3 { font-size: 14px; color: var(--muted); margin: 0 0 10px; }

.ticket-thread, .chat-messages { flex: 1; min-height: 300px; max-height: 55vh; overflow-y: auto; padding: 4px; }
.tmsg, .msg { margin-bottom: 12px; padding: 10px 14px; border-radius: 10px; max-width: 90%; white-space: pre-wrap; line-height: 1.4; font-size: 14px; }
.tmsg.in, .msg.assistant { background: var(--panel-2); border: 1px solid var(--border); }
.tmsg.out, .msg.user { background: var(--accent); color: white; margin-left: auto; }
.msg .sources { display: block; margin-top: 6px; font-size: 11px; color: var(--muted); }

.chat-form { display: flex; gap: 8px; margin-top: 10px; }
.chat-form input { flex: 1; padding: 10px 12px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 14px; }
.chat-form button { padding: 10px 16px; background: var(--accent); border: none; border-radius: 8px; color: white; cursor: pointer; }
.chat-form button:hover { background: var(--accent-hover); }

/* Modal Nouveau ticket */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal-box {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 24px; width: 420px; max-width: 90vw;
}
.modal-box h3 { margin: 0 0 16px; }
.modal-box form { display: flex; flex-direction: column; gap: 10px; }
.modal-box input, .modal-box select, .modal-box textarea {
  padding: 10px 12px; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14px; font-family: inherit;
}
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }
.modal-actions button { padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border); cursor: pointer; font-size: 14px; }
#new-ticket-cancel { background: var(--panel-2); color: var(--text); }
.modal-actions button[type="submit"] { background: var(--accent); color: white; border: none; }
.modal-actions button[type="submit"]:hover { background: var(--accent-hover); }