:root {
    --navy: #0f1b33;
    --navy-2: #16243f;
    --navy-3: #1d2f52;
    --accent: #2563eb;
    --accent-2: #3b82f6;
    --accent-soft: #dbeafe;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --green: #16a34a;
    --green-soft: #dcfce7;
    --red: #dc2626;
    --red-soft: #fee2e2;
    --amber: #d97706;
    --amber-soft: #fef3c7;
    --blue: #2563eb;
    --blue-soft: #dbeafe;
    --violet: #7c3aed;
    --violet-soft: #ede9fe;
    --cyan: #0891b2;
    --cyan-soft: #cffafe;
    --pink: #db2777;
    --pink-soft: #fce7f3;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 1px 2px rgba(15, 23, 42, .04);
    --shadow-lg: 0 10px 30px rgba(15, 23, 42, .14);
    --sidebar-w: 250px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
    font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
button { font-family: inherit; }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 9px; }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- Login ---------- */
.login-wrap { display: flex; min-height: 100vh; }
.login-brand {
    flex: 1.1; background: linear-gradient(150deg, var(--navy) 0%, var(--navy-3) 70%, #23409c 100%);
    color: #fff; padding: 64px; display: flex; flex-direction: column; justify-content: space-between;
    position: relative; overflow: hidden;
}
.login-brand::after {
    content: ""; position: absolute; right: -180px; top: -180px; width: 480px; height: 480px;
    background: radial-gradient(circle, rgba(59,130,246,.35), transparent 65%); border-radius: 50%;
}
.login-brand h1 { font-size: 44px; font-weight: 800; letter-spacing: -.5px; }
.login-brand h1 span { color: #60a5fa; }
.login-brand .sub { color: #93c5fd; margin-top: 8px; font-size: 15px; }
.login-brand .feat { margin-top: 48px; display: grid; gap: 18px; }
.login-brand .feat-item { display: flex; gap: 14px; align-items: flex-start; }
.login-brand .feat-item .ic {
    width: 40px; height: 40px; border-radius: 10px; background: rgba(59,130,246,.18);
    display: flex; align-items: center; justify-content: center; flex: none; color: #93c5fd;
}
.login-brand .feat-item b { display: block; font-size: 14px; }
.login-brand .feat-item p { color: #94a3b8; font-size: 13px; }
.login-brand .foot { color: #64748b; font-size: 12px; }
.login-box {
    flex: 1; display: flex; align-items: center; justify-content: center; padding: 40px; background: var(--bg);
}
.login-card { width: 100%; max-width: 410px; background: var(--card); border-radius: 16px; box-shadow: var(--shadow-lg); padding: 40px; }
.login-card h2 { font-size: 22px; font-weight: 700; }
.login-card .hint { color: var(--muted); margin-bottom: 26px; font-size: 13px; }
.demo-hint { margin-top: 22px; background: var(--blue-soft); border: 1px solid #bfdbfe; border-radius: 10px; padding: 12px 14px; font-size: 12px; color: #1e40af; }
.demo-hint b { display: block; margin-bottom: 3px; }

/* ---------- Layout ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
    width: var(--sidebar-w); background: var(--navy); color: #cbd5e1; flex: none;
    display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.sidebar .logo { display: flex; align-items: center; gap: 11px; padding: 20px 20px 16px; }
.sidebar .logo .mark {
    width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, #2563eb, #1d4ed8);
    display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: 17px;
}
.sidebar .logo b { color: #fff; font-size: 15px; display: block; line-height: 1.15; }
.sidebar .logo span { font-size: 11px; color: #64748b; }
.nav { flex: 1; overflow-y: auto; padding: 6px 12px 12px; }
.nav-section { font-size: 10.5px; text-transform: uppercase; letter-spacing: .8px; color: #475569; padding: 16px 10px 6px; font-weight: 700; }
.nav-item {
    display: flex; align-items: center; gap: 11px; padding: 9px 11px; border-radius: 9px;
    cursor: pointer; color: #94a3b8; font-size: 13.5px; margin-bottom: 2px; transition: .15s;
    border: none; background: none; width: 100%; text-align: left;
}
.nav-item svg { flex: none; }
.nav-item:hover { background: rgba(255,255,255,.05); color: #e2e8f0; }
.nav-item.active { background: var(--accent); color: #fff; }
.nav-item .badge-count { margin-left: auto; background: var(--red); color: #fff; font-size: 10.5px; border-radius: 20px; padding: 1px 7px; font-weight: 600; }
.nav-item.active .badge-count { background: rgba(255,255,255,.25); }
.sidebar .user-box { border-top: 1px solid rgba(255,255,255,.07); padding: 14px 16px; display: flex; align-items: center; gap: 10px; }
.sidebar .user-box .avatar {
    width: 36px; height: 36px; border-radius: 50%; background: var(--navy-3); color: #93c5fd;
    display: flex; align-items: center; justify-content: center; font-weight: 700; flex: none;
}
.sidebar .user-box .who { flex: 1; min-width: 0; }
.sidebar .user-box .who b { color: #e2e8f0; font-size: 13px; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar .user-box .who span { color: #64748b; font-size: 11px; }
.sidebar .user-box button { background: none; border: none; color: #64748b; cursor: pointer; padding: 6px; border-radius: 8px; }
.sidebar .user-box button:hover { color: #fca5a5; background: rgba(255,255,255,.05); }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
    height: 60px; background: var(--card); border-bottom: 1px solid var(--border);
    display: flex; align-items: center; padding: 0 26px; gap: 14px; position: sticky; top: 0; z-index: 40;
}
.topbar h1 { font-size: 17px; font-weight: 700; }
.topbar .crumb { color: var(--muted); font-size: 13px; }
.topbar .spacer { flex: 1; }
.topbar .search { position: relative; }
.topbar .search input {
    border: 1px solid var(--border); border-radius: 9px; padding: 8px 12px 8px 34px; width: 240px;
    font-size: 13px; outline: none; background: var(--bg); transition: .15s;
}
.topbar .search input:focus { border-color: var(--accent); background: #fff; width: 290px; }
.topbar .search svg { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.content { padding: 24px 26px 40px; flex: 1; }

/* ---------- Components ---------- */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card.pad { padding: 20px; }
.card-head { display: flex; align-items: center; gap: 10px; padding: 15px 20px; border-bottom: 1px solid var(--border); }
.card-head h3 { font-size: 14.5px; font-weight: 700; }
.card-head .sub { color: var(--muted); font-size: 12px; }
.card-head .spacer { flex: 1; }
.card-body { padding: 20px; }

.grid { display: grid; gap: 18px; }
.grid > * { min-width: 0; }
.cal-grid { min-width: 0; }
.cal-cell { min-width: 0; overflow: hidden; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
.grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid.cols-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
.grid.cols-31 { grid-template-columns: 2fr 1fr; }
.grid.cols-13 { grid-template-columns: 1fr 2fr; }
@media (max-width: 1200px) { .grid.cols-4 { grid-template-columns: 1fr 1fr; } .grid.cols-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 900px) { .grid.cols-2, .grid.cols-3, .grid.cols-4, .grid.cols-31, .grid.cols-13 { grid-template-columns: 1fr; } .sidebar { display: none; } }

.kpi { padding: 18px 20px; position: relative; overflow: hidden; }
.kpi .kpi-top { display: flex; align-items: center; justify-content: space-between; }
.kpi .kpi-ic { width: 42px; height: 42px; border-radius: 11px; display: flex; align-items: center; justify-content: center; }
.kpi .kpi-label { color: var(--muted); font-size: 12.5px; margin-top: 12px; font-weight: 600; }
.kpi .kpi-val { font-size: 26px; font-weight: 800; letter-spacing: -.5px; margin-top: 2px; }
.kpi .kpi-delta { font-size: 12px; margin-top: 5px; font-weight: 600; }
.kpi .kpi-delta.up { color: var(--green); }
.kpi .kpi-delta.down { color: var(--red); }

.btn {
    display: inline-flex; align-items: center; gap: 7px; border-radius: 9px; padding: 8px 14px;
    font-size: 13px; font-weight: 600; cursor: pointer; border: 1px solid transparent; transition: .15s; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #1d4ed8; }
.btn-outline { background: #fff; border-color: var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); border-color: #cbd5e1; }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { background: var(--bg); color: var(--text); }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 7px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.field { margin-bottom: 15px; }
.field label { display: block; font-size: 12.5px; font-weight: 600; color: #334155; margin-bottom: 6px; }
.field .req { color: var(--red); }
.field input, .field select, .field textarea {
    width: 100%; border: 1px solid var(--border); border-radius: 9px; padding: 9px 12px;
    font-size: 13.5px; outline: none; background: #fff; font-family: inherit; transition: .15s; color: var(--text);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.field .err { color: var(--red); font-size: 12px; margin-top: 4px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }

.badge { display: inline-flex; align-items: center; gap: 5px; border-radius: 20px; padding: 3px 10px; font-size: 11.5px; font-weight: 700; }
.badge-green { background: var(--green-soft); color: #15803d; }
.badge-red { background: var(--red-soft); color: #b91c1c; }
.badge-amber { background: var(--amber-soft); color: #b45309; }
.badge-blue { background: var(--blue-soft); color: #1d4ed8; }
.badge-violet { background: var(--violet-soft); color: #6d28d9; }
.badge-cyan { background: var(--cyan-soft); color: #0e7490; }
.badge-gray { background: #f1f5f9; color: #475569; }
.badge-pink { background: var(--pink-soft); color: #be185d; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th {
    text-align: left; padding: 10px 14px; color: var(--muted); font-size: 11.5px; text-transform: uppercase;
    letter-spacing: .5px; border-bottom: 1px solid var(--border); white-space: nowrap; font-weight: 700; background: #f8fafc;
}
.tbl td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.tbl tr:last-child td { border-bottom: none; }
.tbl tbody tr { cursor: pointer; transition: .1s; }
.tbl tbody tr:hover { background: #f8fafc; }
.tbl .mono { font-variant-numeric: tabular-nums; }
.tbl .avatar-sm {
    width: 30px; height: 30px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 12px; margin-right: 9px; flex: none;
}
.tbl .cell-main { display: flex; align-items: center; }
.tbl .cell-main .sub { color: var(--muted); font-size: 12px; }

.pagination { display: flex; align-items: center; gap: 8px; justify-content: flex-end; padding: 12px 14px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--muted); }

.seg { display: inline-flex; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 3px; gap: 2px; }
.seg button { border: none; background: none; padding: 6px 13px; border-radius: 8px; font-size: 12.5px; font-weight: 600; color: var(--muted); cursor: pointer; }
.seg button.active { background: #fff; color: var(--text); box-shadow: var(--shadow); }

.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); padding: 0 18px; }
.tabs button { border: none; background: none; padding: 12px 14px; font-size: 13.5px; font-weight: 600; color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button:hover { color: var(--text); }
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Modal */
.modal-backdrop {
    position: fixed; inset: 0; background: rgba(15,23,42,.55); z-index: 90;
    display: flex; align-items: flex-start; justify-content: center; padding: 40px 20px; overflow-y: auto;
    animation: fadeIn .15s ease;
}
.modal { background: #fff; border-radius: 14px; width: 100%; max-width: 640px; box-shadow: var(--shadow-lg); animation: slideUp .18s ease; }
.modal.wide { max-width: 920px; }
.modal-head { display: flex; align-items: center; padding: 16px 22px; border-bottom: 1px solid var(--border); }
.modal-head h3 { font-size: 15.5px; font-weight: 700; flex: 1; }
.modal-head .x { border: none; background: none; color: var(--muted); cursor: pointer; padding: 5px; border-radius: 8px; }
.modal-head .x:hover { background: var(--bg); }
.modal-body { padding: 22px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 22px; border-top: 1px solid var(--border); }
@keyframes fadeIn { from { opacity: 0; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(14px); } }

/* Toast */
.toasts { position: fixed; right: 20px; bottom: 20px; z-index: 120; display: flex; flex-direction: column; gap: 10px; }
.toast {
    background: #0f172a; color: #fff; padding: 12px 18px; border-radius: 10px; font-size: 13px;
    display: flex; align-items: center; gap: 9px; box-shadow: var(--shadow-lg); animation: slideIn .2s ease; max-width: 360px;
}
.toast.ok svg { color: #4ade80; }
.toast.err svg { color: #f87171; }
@keyframes slideIn { from { opacity: 0; transform: translateX(30px); } }

/* Kanban */
.kanban { display: flex; gap: 14px; overflow-x: auto; padding-bottom: 10px; align-items: flex-start; }
.kan-col { width: 272px; flex: none; background: #eef2f7; border-radius: 12px; border: 1px solid var(--border); }
.kan-col-head { padding: 12px 14px; display: flex; align-items: center; gap: 8px; }
.kan-col-head b { font-size: 13px; }
.kan-col-head .cnt { margin-left: auto; background: #fff; border-radius: 20px; font-size: 11px; font-weight: 700; padding: 1px 8px; color: var(--muted); }
.kan-cards { padding: 4px 8px 10px; display: grid; gap: 8px; min-height: 60px; }
.kan-card { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 12px; cursor: grab; box-shadow: var(--shadow); transition: .12s; }
.kan-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.kan-card .nm { font-weight: 700; font-size: 13px; }
.kan-card .cp { font-size: 12px; color: var(--muted); margin: 2px 0 8px; }
.kan-card .meta { display: flex; align-items: center; justify-content: space-between; }
.kan-card .val { font-weight: 800; font-size: 13px; }

/* Calendar */
.cal-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.cal-head .ttl { font-weight: 700; font-size: 15px; flex: 1; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.cal-dow { background: #f8fafc; padding: 8px; text-align: center; font-size: 11.5px; font-weight: 700; color: var(--muted); text-transform: uppercase; }
.cal-cell { background: #fff; min-height: 104px; padding: 6px; position: relative; }
.cal-cell.other { background: #fafbfd; }
.cal-cell .dnum { font-size: 12px; font-weight: 600; color: var(--muted); }
.cal-cell.today { outline: 2px solid var(--accent); outline-offset: -2px; }
.cal-cell.today .dnum { color: #fff; background: var(--accent); border-radius: 50%; width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center; }
.cal-ev { font-size: 10.8px; border-radius: 5px; padding: 2px 6px; margin-top: 3px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 600; }
.cal-ev.ev-blue { background: var(--blue-soft); color: #1d4ed8; }
.cal-ev.ev-green { background: var(--green-soft); color: #15803d; }
.cal-ev.ev-amber { background: var(--amber-soft); color: #b45309; }
.cal-ev.ev-violet { background: var(--violet-soft); color: #6d28d9; }
.cal-ev.ev-pink { background: var(--pink-soft); color: #be185d; }

/* Filter builder */
.fb-row { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.fb-row select, .fb-row input {
    border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; font-size: 12.5px; outline: none; background: #fff;
}
.fb-row select:focus, .fb-row input:focus { border-color: var(--accent); }

/* Ticket */
.ticket-thread { display: grid; gap: 14px; }
.tmsg { display: flex; gap: 12px; }
.tmsg .tavatar {
    width: 36px; height: 36px; border-radius: 50%; flex: none; display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 13px; background: var(--blue-soft); color: #1d4ed8;
}
.tmsg.customer .tavatar { background: var(--violet-soft); color: #6d28d9; }
.tmsg .tbubble { background: #f8fafc; border: 1px solid var(--border); border-radius: 12px; padding: 12px 15px; flex: 1; }
.tmsg .tmeta { display: flex; gap: 8px; align-items: center; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.tmsg .tmeta b { color: var(--text); }

/* Details */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; }
.detail-grid .ditem label { display: block; font-size: 11.5px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); font-weight: 700; }
.detail-grid .ditem div { font-size: 14px; font-weight: 600; margin-top: 2px; }
.empty { text-align: center; padding: 44px 20px; color: var(--muted); }
.empty svg { opacity: .4; margin-bottom: 10px; }
.empty b { display: block; color: #475569; margin-bottom: 4px; }

/* Knowledge */
.kb-item { display: flex; gap: 13px; padding: 14px 16px; border-bottom: 1px solid var(--border); cursor: pointer; align-items: flex-start; }
.kb-item:last-child { border-bottom: none; }
.kb-item:hover { background: #f8fafc; }
.kb-item .ic { width: 38px; height: 38px; border-radius: 10px; background: var(--blue-soft); color: #1d4ed8; display: flex; align-items: center; justify-content: center; flex: none; }
.kb-item .ic.client { background: var(--violet-soft); color: #6d28d9; }
.kb-item b { display: block; font-size: 13.5px; }
.kb-item p { color: var(--muted); font-size: 12.5px; margin-top: 2px; }

/* Progress */
.prog { height: 7px; background: #e2e8f0; border-radius: 20px; overflow: hidden; }
.prog i { display: block; height: 100%; border-radius: 20px; }

/* misc */
.row { display: flex; align-items: center; gap: 10px; }
.row.spread { justify-content: space-between; }
.mt { margin-top: 14px; }
.mt-lg { margin-top: 22px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-variant-numeric: tabular-nums; }
.avatar-lg { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px; }
.chip { display: inline-flex; align-items: center; gap: 6px; background: #f1f5f9; border: 1px solid var(--border); border-radius: 20px; padding: 3px 11px; font-size: 12px; font-weight: 600; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); font-weight: 600; }
.legend .sw { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
canvas.chart { width: 100%; }
@media print {
    .sidebar, .topbar, .no-print { display: none !important; }
    .main { margin: 0 !important; }
    body { background: #fff; }
}