:root {
  --navy:       #111111;
  --text:       #111111;
  --text-mid:   #555555;
  --text-light: #999999;
  --bg:         #f4f4f5;
  --bg-alt:     #e9e9eb;
  --white:      #ffffff;
  --border:     #e0e0e0;
  --green:      #22c55e;
  --green-bg:   #f0fdf4;
  --green-text: #166534;
  --green-bdr:  #bbf7d0;
  --red:        #ef4444;
  --red-bg:     #fef2f2;
  --red-text:   #991b1b;
  --amber:      #f59e0b;
  --radius:     10px;
  --radius-lg:  14px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.07);
  --shadow:     0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:  0 8px 40px rgba(0,0,0,.15);
  --font:       'Inter', system-ui, sans-serif;
  --sidebar-w: 220px;
  --header-h:  58px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;overflow:hidden;}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:14px;-webkit-font-smoothing:antialiased;}

/* ══ AUTH ══════════════════════════════════════════════ */
#auth-screen {
  height:100vh;display:flex;align-items:center;justify-content:center;
  background:var(--bg);
}
.auth-card {
  background:var(--white);border:1px solid var(--border);border-radius:20px;
  padding:48px 44px 40px;width:100%;max-width:400px;text-align:center;
  box-shadow:var(--shadow);
}
.auth-logo { width:60px;height:60px;border-radius:50%;margin-bottom:20px;border:2px solid var(--border); }
.auth-card h1 { font-size:1.5rem;font-weight:800;letter-spacing:-.03em;margin-bottom:6px; }
.auth-card p  { color:var(--text-mid);font-size:.88rem;margin-bottom:28px;line-height:1.6; }
.btn-ms {
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  width:100%;padding:12px 20px;background:var(--navy);color:#fff;
  border:none;border-radius:var(--radius);font-family:var(--font);
  font-size:.92rem;font-weight:600;cursor:pointer;transition:background .18s;
}
.btn-ms:hover{background:#333;}
#auth-err {
  background:#fef2f2;border:1px solid #fecaca;border-radius:8px;
  padding:10px 14px;font-size:.74rem;color:#991b1b;margin-bottom:14px;display:none;text-align:left;
  white-space:pre-wrap;font-family:monospace;max-height:300px;overflow-y:auto;
}

/* ══ SHELL ═════════════════════════════════════════════ */
#shell { display:none;height:100vh;flex-direction:column; }

/* ── Header ── */
.shell-header {
  height:var(--header-h);background:var(--white);border-bottom:1px solid var(--border);
  display:flex;align-items:center;padding:0 20px;gap:14px;flex-shrink:0;
  box-shadow:var(--shadow-sm);z-index:50;position:relative;
}
.shell-brand { display:flex;align-items:center;gap:9px;text-decoration:none;flex-shrink:0; }
.shell-logo  { width:30px;height:30px;border-radius:50%;object-fit:cover; }
.shell-brand-name { font-size:.84rem;font-weight:700;color:var(--text);letter-spacing:-.01em; }
.shell-brand-sub  { font-size:.66rem;color:var(--text-light); }
.header-search {
  flex:1;max-width:340px;margin-left:auto;position:relative;
}
.header-search input {
  width:100%;border:1.5px solid var(--border);border-radius:var(--radius);
  background:var(--bg);color:var(--text);font-family:var(--font);font-size:.83rem;
  padding:7px 12px 7px 34px;outline:none;transition:border-color .18s;
}
.header-search input:focus{border-color:var(--navy);background:var(--white);}
.header-search input::placeholder{color:var(--text-light);}
.header-search svg {
  position:absolute;left:10px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;color:var(--text-light);pointer-events:none;
}
.header-actions { display:flex;align-items:center;gap:10px; }
.user-chip {
  display:flex;align-items:center;gap:7px;background:var(--bg);
  border:1px solid var(--border);border-radius:20px;padding:4px 11px 4px 7px;
  font-size:.76rem;color:var(--text-mid);
}
.user-av {
  width:22px;height:22px;background:var(--navy);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:.58rem;font-weight:700;flex-shrink:0;
}
.signout-link { font-size:.72rem;color:var(--text-light);cursor:pointer;margin-left:2px; }
.signout-link:hover{color:var(--red);}

/* ── Layout ── */
.shell-body { display:flex;flex:1;overflow:hidden; }

/* ── Sidebar ── */
.sidebar {
  width:var(--sidebar-w);background:var(--white);border-right:1px solid var(--border);
  flex-shrink:0;display:flex;flex-direction:column;padding:16px 12px;gap:2px;
  overflow-y:auto;
}
.nav-label {
  font-size:.64rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-light);padding:10px 10px 6px;margin-top:6px;
}
.nav-item {
  display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:8px;
  font-size:.83rem;font-weight:500;color:var(--text-mid);cursor:pointer;
  transition:all .15s;user-select:none;
}
.nav-item:hover{background:var(--bg);color:var(--text);}
.nav-item.active{background:var(--navy);color:#fff;}
.nav-item svg{width:15px;height:15px;flex-shrink:0;opacity:.7;}
.nav-item.active svg{opacity:1;}
.sidebar-footer { margin-top:auto;padding-top:16px;border-top:1px solid var(--border); }

/* ── Main ── */
.main-content { flex:1;overflow-y:auto;padding:28px 28px; }
.page { display:none; }
.page.active { display:block; }

/* ── Page header ── */
.page-header {
  display:flex;align-items:flex-start;justify-content:space-between;
  margin-bottom:24px;gap:16px;flex-wrap:wrap;
}
.page-title { font-size:1.3rem;font-weight:800;letter-spacing:-.03em; }
.page-sub   { font-size:.82rem;color:var(--text-mid);margin-top:2px; }

/* ══ BUTTONS ═══════════════════════════════════════════ */
.btn {
  display:inline-flex;align-items:center;gap:7px;padding:8px 16px;
  border-radius:var(--radius);font-family:var(--font);font-size:.82rem;
  font-weight:600;cursor:pointer;border:none;transition:all .18s;
  text-decoration:none;white-space:nowrap;letter-spacing:-.01em;
}
.btn-primary { background:var(--navy);color:#fff;border:1.5px solid var(--navy); }
.btn-primary:hover{background:#333;border-color:#333;}
.btn-danger  { background:var(--red-bg);color:var(--red-text);border:1.5px solid #fecaca; }
.btn-danger:hover{background:#fee2e2;}
.btn-outline { background:transparent;color:var(--text);border:1.5px solid var(--border); }
.btn-outline:hover{border-color:#999;background:var(--bg);}
.btn-ghost   { background:transparent;color:var(--text-mid);border:none;padding:6px 10px; }
.btn-ghost:hover{background:var(--bg);color:var(--text);}
.btn-sm { padding:6px 12px;font-size:.76rem; }
.btn-icon { padding:7px;border-radius:8px; }

/* ══ DASHBOARD ═════════════════════════════════════════ */
.stat-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:28px; }
.stat-card {
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:20px 22px;
}
.stat-label { font-size:.72rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text-light);margin-bottom:6px; }
.stat-value { font-size:2rem;font-weight:800;letter-spacing:-.04em;line-height:1; }
.stat-sub   { font-size:.74rem;color:var(--text-mid);margin-top:4px; }
.stat-card.accent { background:var(--navy);color:#fff; }
.stat-card.accent .stat-label { color:rgba(255,255,255,.5); }
.stat-card.accent .stat-sub   { color:rgba(255,255,255,.55); }

.chart-row { display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:28px; }
@media(max-width:720px){.chart-row{grid-template-columns:1fr;}}
.chart-card {
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 22px;
}
.chart-title { font-size:.8rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--text-light);margin-bottom:16px; }
.bar-row { display:flex;align-items:center;gap:10px;margin-bottom:10px; }
.bar-label { font-size:.78rem;color:var(--text-mid);width:110px;flex-shrink:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap; }
.bar-track { flex:1;height:8px;background:var(--bg-alt);border-radius:4px;overflow:hidden; }
.bar-fill  { height:100%;background:var(--navy);border-radius:4px;transition:width .5s ease; }
.bar-count { font-size:.74rem;font-weight:600;color:var(--text);width:36px;text-align:right;flex-shrink:0; }

.donut-wrap { display:flex;align-items:center;gap:20px; }
.donut-legend { flex:1; }
.legend-row { display:flex;align-items:center;gap:8px;margin-bottom:8px; }
.legend-dot { width:9px;height:9px;border-radius:50%;flex-shrink:0; }
.legend-label { font-size:.78rem;color:var(--text-mid);flex:1; }
.legend-val   { font-size:.78rem;font-weight:700;color:var(--text); }

.recent-table { width:100%;border-collapse:collapse; }
.recent-table th {
  font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--text-light);padding:0 0 10px;border-bottom:1px solid var(--border);text-align:left;
}
.recent-table td { padding:10px 0;border-bottom:1px solid var(--border);font-size:.82rem;color:var(--text-mid); }
.recent-table tr:last-child td { border-bottom:none; }
.recent-table td:first-child { color:var(--text);font-weight:600; }

/* ══ CUSTOMERS LIST ════════════════════════════════════ */
.toolbar {
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:12px 16px;margin-bottom:16px;
}
.search-wrap { position:relative;flex:1;min-width:180px;max-width:300px; }
.search-wrap input {
  width:100%;border:1.5px solid var(--border);border-radius:var(--radius);
  background:var(--bg);color:var(--text);font-family:var(--font);
  font-size:.82rem;padding:7px 12px 7px 32px;outline:none;transition:border-color .18s;
}
.search-wrap input:focus{border-color:var(--navy);background:var(--white);}
.search-wrap input::placeholder{color:var(--text-light);}
.search-wrap svg{position:absolute;left:9px;top:50%;transform:translateY(-50%);width:13px;height:13px;color:var(--text-light);pointer-events:none;}
.filter-sel {
  border:1.5px solid var(--border);border-radius:var(--radius);
  background:var(--bg);color:var(--text);font-family:var(--font);
  font-size:.8rem;padding:7px 9px;outline:none;cursor:pointer;
}
.filter-sel:focus{border-color:var(--navy);}
.count-pill {
  font-size:.76rem;color:var(--text-mid);background:var(--bg);
  border:1px solid var(--border);border-radius:20px;padding:4px 11px;
  white-space:nowrap;margin-left:auto;
}
.count-pill b{color:var(--text);}

.customers-table-wrap {
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
}
table.ctable { width:100%;border-collapse:collapse; }
table.ctable thead th {
  background:var(--bg);border-bottom:1.5px solid var(--border);
  color:var(--text-light);font-size:.68rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.06em;padding:9px 14px;white-space:nowrap;
  position:sticky;top:0;z-index:4;cursor:pointer;user-select:none;text-align:left;
  transition:color .15s;
}
table.ctable thead th:hover{color:var(--text);}
table.ctable thead th.sort-asc::after{content:' ↑';color:var(--navy);}
table.ctable thead th.sort-desc::after{content:' ↓';color:var(--navy);}
table.ctable thead th.th-actions {
  position:sticky;top:0;right:0;z-index:6;
  background:var(--bg);
  box-shadow:-2px 0 6px rgba(0,0,0,.06);
}
table.ctable tbody tr { border-bottom:1px solid var(--border);cursor:pointer;transition:background .1s; }
table.ctable tbody tr:hover{background:var(--bg);}
table.ctable tbody tr:last-child{border-bottom:none;}
table.ctable tbody td { padding:10px 14px;font-size:.82rem;color:var(--text-mid);max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap; }
td.td-name{color:var(--text);font-weight:600;font-size:.84rem;}
.td-actions{
  width:70px;text-align:right;
  position:sticky;right:0;
  background:var(--white);
  box-shadow:-2px 0 6px rgba(0,0,0,.06);
  z-index:2;
}
table.ctable tbody tr:hover .td-actions { background:var(--bg); }

.tag {
  display:inline-block;font-size:.66rem;font-weight:600;letter-spacing:.04em;
  text-transform:uppercase;padding:2px 8px;border-radius:20px;border:1px solid;
}
.tag-nc   {background:var(--green-bg);color:var(--green-text);border-color:var(--green-bdr);}
.tag-trad {background:#f5f3ff;color:#5b21b6;border-color:#ddd6fe;}
.tag-pers {background:#fff7ed;color:#9a3412;border-color:#fed7aa;}
.tag-uid  {background:var(--bg);color:var(--text-light);border-color:var(--border);}

.empty-state {
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:64px 24px;gap:10px;color:var(--text-light);font-size:.86rem;
}
.empty-state svg{opacity:.25;margin-bottom:4px;}

/* ══ MODAL ══════════════════════════════════════════════ */
.modal-overlay {
  position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:300;
  display:none;align-items:flex-start;justify-content:center;padding:40px 16px;overflow-y:auto;
}
.modal-overlay.open{display:flex;}
.modal {
  background:var(--white);border-radius:var(--radius-lg);width:100%;max-width:620px;
  box-shadow:var(--shadow-lg);position:relative;margin:auto;
}
.modal-header {
  padding:20px 24px 16px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
}
.modal-title { font-size:1rem;font-weight:800;letter-spacing:-.02em; }
.modal-close {
  width:28px;height:28px;border-radius:8px;background:var(--bg);border:1px solid var(--border);
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  font-size:.9rem;color:var(--text-mid);transition:all .15s;
}
.modal-close:hover{background:var(--bg-alt);color:var(--text);}
.modal-body { padding:20px 24px; }
.modal-footer {
  padding:14px 24px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:flex-end;gap:10px;
}

/* ── Form ── */
.form-grid { display:grid;grid-template-columns:1fr 1fr;gap:14px 16px; }
.form-grid .span2 { grid-column:1/-1; }
.field { display:flex;flex-direction:column;gap:5px; }
.field label { font-size:.76rem;font-weight:600;color:var(--text-mid);letter-spacing:.01em; }
.field input,.field select,.field textarea {
  border:1.5px solid var(--border);border-radius:var(--radius);
  background:var(--white);color:var(--text);font-family:var(--font);
  font-size:.84rem;padding:8px 11px;outline:none;transition:border-color .18s;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--navy);}
.field textarea{resize:vertical;min-height:72px;}
.form-section-title {
  grid-column:1/-1;font-size:.68rem;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--text-light);padding-top:6px;
  border-top:1px solid var(--border);margin-top:4px;
}
.form-section-title:first-child{border-top:none;margin-top:0;padding-top:0;}

/* ── Toast ── */
#toast {
  position:fixed;bottom:24px;right:24px;z-index:500;
  background:var(--navy);color:#fff;border-radius:10px;
  padding:12px 18px;font-size:.82rem;font-weight:500;
  box-shadow:var(--shadow-lg);display:none;align-items:center;gap:9px;
  max-width:320px;
}
#toast.show{display:flex;}
#toast.success{background:#15803d;}
#toast.error  {background:var(--red);}

/* ── Confirm dialog ── */
#confirm-overlay {
  position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:400;
  display:none;align-items:center;justify-content:center;
}
#confirm-overlay.open{display:flex;}
.confirm-box {
  background:var(--white);border-radius:var(--radius-lg);padding:28px 28px 22px;
  max-width:360px;width:90%;box-shadow:var(--shadow-lg);text-align:center;
}
.confirm-box h3{font-size:.98rem;font-weight:700;margin-bottom:8px;}
.confirm-box p{font-size:.84rem;color:var(--text-mid);margin-bottom:20px;line-height:1.5;}
.confirm-actions{display:flex;gap:10px;justify-content:center;}

/* ── Loading ── */
#loading-overlay {
  position:fixed;inset:0;background:rgba(255,255,255,.88);z-index:600;
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
#loading-overlay.show{display:flex;}
.spinner{width:34px;height:34px;border:3px solid var(--border);border-top-color:var(--navy);border-radius:50%;animation:spin .7s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}
.loading-msg{font-size:.82rem;color:var(--text-mid);font-weight:500;}

/* ── Version badge ── */
.version-badge {
  font-size:.7rem;font-weight:600;color:var(--text-light);
  background:var(--bg);border:1px solid var(--border);border-radius:20px;
  padding:3px 10px;letter-spacing:.02em;white-space:nowrap;flex-shrink:0;
}
.version-date { color:var(--text-light);font-weight:400; }

/* ── Settings dropdown ── */
.settings-wrap { position:relative;flex-shrink:0; }
.settings-dropdown {
  position:absolute;top:calc(100% + 8px);right:0;
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);min-width:200px;z-index:200;
  display:none;flex-direction:column;overflow:hidden;
}
.settings-dropdown.open { display:flex; }
.settings-item {
  display:flex;align-items:center;gap:9px;padding:10px 14px;
  font-size:.82rem;color:var(--text-mid);cursor:pointer;transition:background .12s;
}
.settings-item:hover:not(.no-hover) { background:var(--bg);color:var(--text); }
.settings-item.no-hover { color:var(--text-light);cursor:default;font-size:.78rem; }
.settings-divider { height:1px;background:var(--border);margin:4px 0; }
.settings-label {
  font-size:.64rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-light);padding:8px 14px 2px;
}

.si-tab {
  padding:6px 14px;border-radius:6px;font-size:.8rem;font-weight:600;
  cursor:pointer;color:var(--text-mid);transition:all .15s;
}
.si-tab:hover{color:var(--text);background:var(--white);}
.si-tab.active{background:var(--white);color:var(--text);box-shadow:var(--shadow-sm);}

/* ── Success dialog ── */
#success-overlay {
  position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:400;
  display:none;align-items:center;justify-content:center;
}
#success-overlay.open{display:flex;}
.success-box {
  background:var(--white);border-radius:var(--radius-lg);padding:32px 32px 24px;
  max-width:380px;width:90%;box-shadow:var(--shadow-lg);text-align:center;
}
.success-icon {
  width:52px;height:52px;background:var(--green-bg);border-radius:50%;
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;
}
.success-box h3{font-size:1.05rem;font-weight:800;margin-bottom:6px;color:var(--text);}
.success-box p{font-size:.84rem;color:var(--text-mid);margin-bottom:22px;line-height:1.5;}
.success-actions{display:flex;gap:10px;justify-content:center;}

/* scrollbar */
::-webkit-scrollbar{width:5px;height:5px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px;}
::-webkit-scrollbar-thumb:hover{background:#bbb;}