@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700&display=swap');

:root {
  --sb:        #1C2B3A;
  --sb-hover:  #243447;
  --sb-active: #2D4057;
  --accent:    #3DBFC5;
  --accent-dk: #2AA5AB;
  --bg:        #F1F5F9;
  --surface:   #FFFFFF;
  --border:    #E2E8F0;
  --text:      #1E293B;
  --muted:     #64748B;
  --danger:    #EF4444;
  --warning:   #F59E0B;
  --success:   #10B981;
  --info:      #3B82F6;
  --sb-w:      220px;
  --hdr-h:     52px;
  --radius:    8px;
  --ease:      .18s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Be Vietnam Pro', 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; }

/* ── LAYOUT ──────────────────────────────────────────── */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: var(--sb-w); background: var(--sb);
  flex-shrink: 0; position: fixed; top: 0; left: 0; height: 100vh;
  display: flex; flex-direction: column; z-index: 200;
  overflow-y: auto;
}
.admin-main { margin-left: var(--sb-w); flex: 1; display: flex; flex-direction: column; min-height: 100vh; }
.admin-header {
  height: var(--hdr-h); background: var(--surface); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 24px; gap: 12px;
  position: sticky; top: 0; z-index: 100;
}
.admin-content { flex: 1; padding: 24px; }

/* ── SIDEBAR ─────────────────────────────────────────── */
.sb-logo {
  padding: 18px 16px 14px;
  border-bottom: 1px solid rgba(255,255,255,.07);
  display: flex; align-items: center; gap: 10px;
}
.sb-logo-mark {
  width: 32px; height: 32px; border-radius: 7px;
  background: var(--accent); display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: .85rem; color: #fff; flex-shrink: 0;
}
.sb-logo-text { line-height: 1.25; }
.sb-logo-name { color: #fff; font-size: .85rem; font-weight: 700; }
.sb-logo-sub  { color: rgba(255,255,255,.35); font-size: .68rem; }

.sb-nav { flex: 1; padding: 8px; }
.sb-section { font-size: .63rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.25); padding: 14px 8px 4px; }
.sb-link {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 10px; border-radius: 6px;
  color: rgba(255,255,255,.6); font-size: .82rem; font-weight: 500;
  transition: var(--ease); margin-bottom: 1px;
}
.sb-link:hover  { background: var(--sb-hover); color: rgba(255,255,255,.9); }
.sb-link.active { background: var(--sb-active); color: var(--accent); }
.sb-link svg    { flex-shrink: 0; opacity: .7; }
.sb-link.active svg { opacity: 1; }
.sb-badge {
  margin-left: auto; background: var(--accent); color: #fff;
  font-size: .62rem; font-weight: 700; padding: 1px 6px; border-radius: 99px;
}

.sb-footer {
  padding: 8px;
  border-top: 1px solid rgba(255,255,255,.07);
}

/* ── HEADER ──────────────────────────────────────────── */
.hdr-breadcrumb { display: flex; align-items: center; gap: 6px; font-size: .8rem; color: var(--muted); }
.hdr-breadcrumb a { color: var(--accent); }
.hdr-breadcrumb span { opacity: .4; }
.hdr-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.hdr-search {
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 20px;
  font-size: .8rem; color: var(--text); background: var(--bg); outline: none;
  width: 200px; transition: var(--ease);
}
.hdr-search:focus { border-color: var(--accent); width: 240px; }
.hdr-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: .75rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
}

/* ── PAGE HEADER ─────────────────────────────────────── */
.page-hdr { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 20px; }
.page-hdr h1 { font-size: 1.25rem; font-weight: 700; color: var(--text); }
.page-hdr p  { font-size: .82rem; color: var(--muted); margin-top: 2px; }

/* ── STATS ───────────────────────────────────────────── */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; position: relative; overflow: hidden;
}
.stat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--card-accent, var(--border)); }
.stat-card__lbl { font-size: .72rem; font-weight: 600; color: var(--muted); letter-spacing: .04em; margin-bottom: 8px; }
.stat-card__val { font-size: 1.6rem; font-weight: 700; color: var(--text); line-height: 1; }
.stat-card__sub { font-size: .71rem; color: var(--muted); margin-top: 4px; }
.stat-card__icon { position: absolute; right: 14px; top: 18px; opacity: .1; }

/* ── CARD ────────────────────────────────────────────── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.card-hdr {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.card-title { font-size: .88rem; font-weight: 700; }
.card-body  { padding: 16px 18px; }

/* ── TABLE ───────────────────────────────────────────── */
.tbl-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: .82rem; }
table.tbl th {
  text-align: left; padding: 9px 14px;
  font-size: .68rem; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: .07em;
  background: #F8FAFC; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.tbl td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.tbl tr:last-child td { border-bottom: none; }
table.tbl tbody tr:hover td { background: #F8FAFC; }
.tbl-actions { display: flex; gap: 6px; }

/* ── BADGE ───────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 99px;
  font-size: .68rem; font-weight: 700; white-space: nowrap;
}
.badge-dot { width: 6px; height: 6px; border-radius: 50%; }
.badge--blue    { background:#EFF6FF; color:#1D4ED8; }
.badge--green   { background:#F0FDF4; color:#166534; }
.badge--yellow  { background:#FFFBEB; color:#92400E; }
.badge--red     { background:#FEF2F2; color:#991B1B; }
.badge--gray    { background:#F1F5F9; color:#475569; }
.badge--teal    { background:#F0FDFA; color:#0F766E; }
.badge--purple  { background:#F5F3FF; color:#6D28D9; }
.badge--orange  { background:#FFF7ED; color:#C2410C; }

/* ── BUTTONS ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius);
  font-size: .8rem; font-weight: 600; cursor: pointer;
  border: 1.5px solid transparent; transition: var(--ease);
  font-family: inherit; white-space: nowrap;
}
.btn--primary  { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn--primary:hover { background: var(--accent-dk); border-color: var(--accent-dk); }
.btn--outline  { background: transparent; border-color: var(--border); color: var(--text); }
.btn--outline:hover { border-color: var(--accent); color: var(--accent); }
.btn--ghost    { background: transparent; border-color: transparent; color: var(--muted); }
.btn--ghost:hover { background: var(--bg); color: var(--text); }
.btn--danger   { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn--sm { padding: 4px 10px; font-size: .75rem; }
.btn--icon { padding: 6px; }

/* ── FORM ────────────────────────────────────────────── */
.form-row    { display: grid; gap: 14px; }
.form-row-2  { grid-template-columns: 1fr 1fr; }
.form-row-3  { grid-template-columns: 1fr 1fr 1fr; }
.form-group  { display: flex; flex-direction: column; gap: 5px; }
.form-label  { font-size: .75rem; font-weight: 600; color: var(--text); }
.form-input, .form-select, .form-textarea {
  padding: 7px 11px; border: 1.5px solid var(--border); border-radius: 7px;
  font-size: .82rem; font-family: inherit; color: var(--text);
  background: var(--surface); outline: none; transition: var(--ease);
  width: 100%;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(61,191,197,.1);
}
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; padding-right: 30px;
}
.form-textarea { resize: vertical; min-height: 80px; }

/* ── TABS ────────────────────────────────────────────── */
.tabs         { border-bottom: 1px solid var(--border); display: flex; gap: 2px; overflow-x: auto; }
.tab-btn {
  padding: 9px 16px; font-size: .8rem; font-weight: 600; color: var(--muted);
  border: none; background: none; cursor: pointer; white-space: nowrap;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  font-family: inherit; transition: var(--ease);
}
.tab-btn:hover   { color: var(--text); }
.tab-btn.active  { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel       { display: none; padding: 20px 0; }
.tab-panel.active { display: block; }

/* ── KANBAN ──────────────────────────────────────────── */
.kanban { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 12px; align-items: flex-start; }
.kb-col {
  min-width: 168px; max-width: 168px; flex-shrink: 0;
  background: var(--bg); border-radius: 8px; padding: 10px;
}
.kb-col-hdr {
  font-size: .68rem; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: .06em;
  margin-bottom: 8px; display: flex; align-items: center; justify-content: space-between;
}
.kb-col.active .kb-col-hdr { color: var(--accent); }
.kb-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px;
  padding: 10px; margin-bottom: 8px; cursor: pointer; transition: var(--ease);
}
.kb-card:hover { border-color: var(--accent); box-shadow: 0 2px 8px rgba(0,0,0,.07); }
.kb-card__title { font-size: .8rem; font-weight: 600; margin-bottom: 4px; }
.kb-card__meta  { font-size: .71rem; color: var(--muted); }
.kb-count { background: rgba(255,255,255,.15); padding: 1px 6px; border-radius: 99px; font-size: .65rem; font-weight: 700; color: var(--muted); }
.kb-col.active .kb-count { background: var(--accent); color: #fff; }

/* ── MODAL ───────────────────────────────────────────── */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.45); z-index: 500;
  align-items: center; justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface); border-radius: 12px;
  width: min(560px, 95vw); max-height: 90vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.modal-hdr {
  padding: 18px 20px 14px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-hdr h3 { font-size: .95rem; font-weight: 700; }
.modal-close {
  width: 28px; height: 28px; border-radius: 6px; border: none;
  background: var(--bg); color: var(--muted); cursor: pointer; font-size: 1rem;
  display: flex; align-items: center; justify-content: center; font-family: inherit;
}
.modal-body { padding: 18px 20px; }
.modal-footer { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* ── SOURCE CHIP ─────────────────────────────────────── */
.src-chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 99px;
  font-size: .7rem; font-weight: 600;
}
.src--fb    { background: #EFF6FF; color: #1D4ED8; }
.src--gg    { background: #FEF2F2; color: #991B1B; }
.src--web   { background: #F0FDF4; color: #166534; }
.src--ctv   { background: #F5F3FF; color: #6D28D9; }
.src--old   { background: #FFF7ED; color: #C2410C; }
.src--zalo  { background: #EFF6FF; color: #0369A1; }
.src--tiktok{ background: #1C2B3A; color: #fff; }

/* ── UTILS ───────────────────────────────────────────── */
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.gap-12 { gap: 12px; }
.flex  { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.text-muted { color: var(--muted); }
.text-sm    { font-size: .78rem; }
.text-xs    { font-size: .7rem; }
.font-bold  { font-weight: 700; }
.w-full     { width: 100%; }
.separator  { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

/* ── LEAD PIPELINE ───────────────────────────────────── */
.pipeline { display: flex; gap: 12px; overflow-x: auto; padding-bottom: 12px; align-items: flex-start; }
.pipeline-col { min-width: 200px; max-width: 200px; flex-shrink: 0; }
.pipeline-col-hdr {
  font-size: .72rem; font-weight: 700; color: var(--muted); text-transform: uppercase;
  letter-spacing: .06em; margin-bottom: 8px; padding: 6px 10px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 7px;
  display: flex; align-items: center; justify-content: space-between;
}
.lead-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; margin-bottom: 8px; cursor: pointer; transition: var(--ease);
}
.lead-card:hover { border-color: var(--accent); box-shadow: 0 2px 8px rgba(0,0,0,.06); }
.lead-card__name { font-size: .83rem; font-weight: 700; margin-bottom: 4px; }
.lead-card__phone { font-size: .75rem; color: var(--muted); margin-bottom: 6px; }
.lead-card__footer { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }
.lead-card__date { font-size: .68rem; color: var(--muted); }

/* ── PROGRESS ────────────────────────────────────────── */
.progress-bar { height: 6px; background: var(--border); border-radius: 99px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent); border-radius: 99px; transition: width .4s ease; }

/* ── AMOUNT ──────────────────────────────────────────── */
.amount { font-variant-numeric: tabular-nums; }
.amount--credit { color: var(--success); font-weight: 600; }
.amount--debit  { color: var(--danger); font-weight: 600; }

/* ── EMPTY STATE ─────────────────────────────────────── */
.empty-state { text-align: center; padding: 48px 24px; color: var(--muted); }
.empty-state svg { opacity: .2; margin-bottom: 12px; }
.empty-state p { font-size: .85rem; }