:root {
    --bg: #f5f6f8;
    --surface: #ffffff;
    --surface-2: #f8f9fb;
    --text: #17181c;
    --muted: #737985;
    --border: #e5e7eb;
    --accent: #7c3aed;
    --accent-2: #6d28d9;
    --accent-soft: #f1eafe;
    --success: #15803d;
    --success-soft: #ecfdf3;
    --warning: #a16207;
    --warning-soft: #fffbeb;
    --danger: #b42318;
    --danger-soft: #fff1f0;
    --info: #1d4ed8;
    --info-soft: #eff6ff;
    --sidebar: #121318;
    --sidebar-text: #f7f7fa;
    --sidebar-muted: #999eaa;
    --shadow: 0 1px 2px rgba(16,24,40,.04), 0 4px 16px rgba(16,24,40,.04);
    --radius: 14px;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--text); background: var(--bg); }
a { color: inherit; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.app-shell { min-height: 100vh; }
.sidebar {
    position: fixed; inset: 0 auto 0 0; width: 250px; padding: 18px 14px;
    display: flex; flex-direction: column; background: var(--sidebar); color: var(--sidebar-text);
    z-index: 50;
}
.sidebar-brand { display:flex; align-items:center; gap:12px; padding:8px 10px 22px; }
.sidebar-brand img, .brand-mark { width:40px; height:40px; border-radius:11px; object-fit:contain; background:#fff; }
.brand-mark { display:grid; place-items:center; color:#fff; background:linear-gradient(135deg,#7c3aed,#4c1d95); font-weight:900; font-size:20px; }
.sidebar-brand strong, .sidebar-brand small { display:block; }
.sidebar-brand small { color:var(--sidebar-muted); margin-top:2px; }
.main-nav { display:grid; gap:4px; }
.main-nav a { text-decoration:none; display:flex; align-items:center; gap:11px; padding:10px 12px; border-radius:10px; color:#d6d8df; font-weight:620; }
.main-nav a:hover { background:#202229; color:#fff; }
.main-nav a.active { background:#29222f; color:#fff; box-shadow: inset 3px 0 0 var(--accent); }
.main-nav a span { width:19px; text-align:center; color:#aeb2bd; }
.nav-heading { padding:20px 12px 6px; color:#777d88; font-size:11px; text-transform:uppercase; letter-spacing:.09em; font-weight:800; }
.sidebar-user { margin-top:auto; border-top:1px solid #2b2d34; padding:16px 7px 4px; display:flex; align-items:center; gap:10px; }
.avatar { width:34px; height:34px; flex:0 0 34px; border-radius:999px; display:grid; place-items:center; background:#2f2440; color:#d8b4fe; font-weight:800; }
.sidebar-user-info { min-width:0; flex:1; }
.sidebar-user-info strong, .sidebar-user-info small { display:block; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.sidebar-user-info small { color:var(--sidebar-muted); font-size:12px; margin-top:2px; }
.icon-button { border:0; background:transparent; color:inherit; padding:7px 9px; border-radius:8px; }
.icon-button:hover { background:rgba(255,255,255,.08); }
.workspace { margin-left:250px; min-height:100vh; }
.page-container { width:min(1380px, calc(100% - 48px)); margin:0 auto; padding:34px 0 60px; }
.mobile-header { display:none; }
.page-head { display:flex; align-items:flex-start; justify-content:space-between; gap:20px; margin-bottom:24px; }
.page-head h1 { margin:0 0 6px; font-size:30px; letter-spacing:-.025em; }
.page-head p { margin:0; color:var(--muted); }
.actions { display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; min-height:40px; padding:9px 14px; border-radius:10px; border:1px solid transparent; background:var(--accent); color:#fff; font-weight:700; text-decoration:none; }
.btn:hover { background:var(--accent-2); }
.btn-secondary { background:var(--surface); border-color:var(--border); color:var(--text); }
.btn-secondary:hover { background:var(--surface-2); }
.btn-danger { background:#b42318; }
.card { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow); }
.stats-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px; margin-bottom:22px; }
.stat-card { padding:20px; }
.stat-card small { display:block; color:var(--muted); font-weight:650; }
.stat-card strong { display:block; margin-top:8px; font-size:28px; letter-spacing:-.02em; }
.stat-card .hint { margin-top:8px; color:var(--muted); font-size:12px; }
.toolbar { padding:14px; display:grid; grid-template-columns:minmax(260px,1fr) 190px 190px auto; gap:10px; margin-bottom:14px; }
input, textarea, select {
    width:100%; min-height:42px; border:1px solid #dfe2e7; border-radius:10px;
    padding:10px 12px; background:#fff; color:var(--text); outline:none;
}
textarea { resize:vertical; }
input:focus, textarea:focus, select:focus { border-color:#a78bfa; box-shadow:0 0 0 3px #f1eafe; }
.ticket-table { overflow:hidden; }
.ticket-row {
    display:grid; grid-template-columns:120px minmax(300px,1.6fr) minmax(180px,.7fr) 150px 145px;
    gap:15px; align-items:center; padding:15px 18px; border-top:1px solid var(--border); text-decoration:none;
}
.ticket-row:first-child { border-top:0; }
.ticket-row:hover { background:#fbfbfd; }
.ticket-id { font-weight:800; font-size:13px; }
.ticket-main { min-width:0; }
.ticket-main strong { display:block; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:14px; }
.ticket-main small { color:var(--muted); display:block; margin-top:4px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.ticket-meta { color:var(--muted); font-size:13px; }
.badge { display:inline-flex; align-items:center; gap:6px; width:max-content; padding:5px 9px; border-radius:999px; font-size:12px; font-weight:800; }
.badge::before { content:""; width:6px; height:6px; border-radius:50%; background:currentColor; }
.status-new { background:var(--danger-soft); color:var(--danger); }
.status-open { background:var(--info-soft); color:var(--info); }
.status-waiting_customer { background:var(--warning-soft); color:var(--warning); }
.status-closed { background:var(--success-soft); color:var(--success); }
.ticket-header { display:grid; grid-template-columns:minmax(0,1fr) auto; gap:20px; align-items:start; margin-bottom:20px; }
.ticket-header h1 { margin:6px 0 6px; font-size:26px; }
.ticket-header p { margin:0; color:var(--muted); }
.ticket-actions { display:flex; gap:9px; }
.ticket-actions form { min-width:180px; }
.conversation { display:grid; gap:14px; }
.message { background:var(--surface); border:1px solid var(--border); border-radius:14px; box-shadow:var(--shadow); overflow:hidden; }
.message.outbound { margin-left:7%; border-left:3px solid var(--accent); }
.message.inbound { margin-right:7%; }
.message.internal { margin-left:12%; margin-right:12%; background:#fffbeb; border-color:#fde68a; }
.message header { padding:13px 16px; display:flex; justify-content:space-between; gap:16px; background:var(--surface-2); border-bottom:1px solid var(--border); }
.message header strong { font-size:13px; }
.message header time { color:var(--muted); font-size:12px; }
.message-body { padding:18px; overflow-wrap:anywhere; line-height:1.55; }
.message-body img { max-width:100%; height:auto; }
.attachments { padding:0 18px 16px; display:flex; flex-wrap:wrap; gap:8px; }
.attachment { display:inline-flex; padding:7px 10px; border:1px solid var(--border); border-radius:9px; text-decoration:none; font-size:13px; background:#fff; }
.composer-grid { display:grid; grid-template-columns:2fr 1fr; gap:14px; margin-top:18px; }
.composer { padding:18px; }
.composer h2 { margin:0 0 13px; font-size:16px; }
.composer textarea { min-height:170px; }
.composer-footer { margin-top:10px; display:flex; justify-content:space-between; align-items:center; gap:10px; }
.composer-footer small { color:var(--muted); }
.note-card { background:#fffdf5; }
.settings-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.settings-card { padding:20px; margin-bottom:16px; }
.settings-card h2 { margin:0 0 6px; font-size:18px; }
.settings-card > p { color:var(--muted); margin:0 0 18px; }
.field { display:block; }
.field > span { display:block; font-size:13px; font-weight:750; margin-bottom:7px; }
.checkbox { display:flex; align-items:center; gap:8px; }
.checkbox input { width:auto; min-height:auto; }
.toast { position:fixed; right:22px; top:22px; z-index:90; max-width:430px; padding:12px 15px; border-radius:11px; box-shadow:0 12px 32px rgba(0,0,0,.13); font-weight:650; }
.toast-success { background:#166534; color:#fff; }
.toast-error { background:#991b1b; color:#fff; }
.empty-state { padding:54px 24px; text-align:center; color:var(--muted); }
.empty-state strong { display:block; color:var(--text); font-size:18px; margin-bottom:5px; }
.team-list { display:grid; gap:10px; }
.team-row { display:grid; grid-template-columns:1fr 150px 160px; gap:15px; align-items:center; padding:14px 16px; border:1px solid var(--border); border-radius:12px; }
.logo-preview { max-width:260px; max-height:110px; object-fit:contain; padding:10px; border:1px solid var(--border); border-radius:10px; background:#fff; }

@media (max-width:1050px) {
    .stats-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
    .ticket-row { grid-template-columns:100px minmax(260px,1fr) 145px; }
    .ticket-row .hide-md { display:none; }
}
@media (max-width:760px) {
    .sidebar { transform:translateX(-100%); transition:transform .2s ease; box-shadow:20px 0 40px rgba(0,0,0,.2); }
    .sidebar.open { transform:translateX(0); }
    .workspace { margin-left:0; }
    .mobile-header { height:58px; padding:0 14px; display:flex; align-items:center; gap:10px; background:#fff; border-bottom:1px solid var(--border); position:sticky; top:0; z-index:30; }
    .page-container { width:min(100% - 24px, 1380px); padding-top:22px; }
    .stats-grid, .settings-grid, .composer-grid { grid-template-columns:1fr; }
    .toolbar { grid-template-columns:1fr; }
    .ticket-row { grid-template-columns:90px minmax(0,1fr); }
    .ticket-row .hide-mobile { display:none; }
    .ticket-header { grid-template-columns:1fr; }
    .ticket-actions { flex-direction:column; }
    .ticket-actions form { width:100%; }
    .message.inbound, .message.outbound, .message.internal { margin-left:0; margin-right:0; }
    .team-row { grid-template-columns:1fr; }
    .toast { left:12px; right:12px; top:70px; max-width:none; }
}
.m365-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(320px,.75fr);gap:16px}.permission-row{display:grid;gap:3px;padding:12px 0;border-bottom:1px solid var(--border)}.permission-row span{color:var(--muted);font-size:13px}.callout{margin-top:16px;padding:12px 14px;border-radius:10px;background:var(--accent-soft);color:#4c1d95}.connection-tests{display:grid;gap:10px}.connection-test{display:grid;grid-template-columns:minmax(250px,1fr) auto minmax(220px,.7fr);gap:14px;align-items:center;padding:14px 0;border-top:1px solid var(--border)}.connection-test:first-child{border-top:0}.connection-test small{display:block;margin-top:4px;color:var(--muted)}.test-result{padding:9px 11px;border-radius:9px;background:var(--surface-2);color:var(--muted);font-size:13px}.test-ok{background:var(--success-soft);color:var(--success)}.test-error{background:var(--danger-soft);color:var(--danger)}.test-send{display:flex;gap:8px}@media(max-width:900px){.m365-grid,.connection-test{grid-template-columns:1fr}.test-send{flex-direction:column}}
/* V2.3.3 supplement */
.m365-debug {
    margin: 8px 0 0;
    padding: 10px 12px;
    border-radius: 9px;
    background: #111318;
    color: #e5e7eb;
    font-size: 12px;
    line-height: 1.5;
    overflow-x: auto;
    white-space: pre-wrap;
}