:root {
  --bg:          #0f1117;
  --bg-card:     #1a1d27;
  --bg-hover:    #22263a;
  --border:      #2a2d3e;
  --border-hi:   #3a3d55;
  --teal:        oklch(72% 0.18 185);
  --teal-dim:    oklch(60% 0.14 185);
  --teal-glow:   oklch(72% 0.18 185 / 12%);
  --teal-ring:   oklch(72% 0.18 185 / 25%);
  --text:        #e8eaf0;
  --text-muted:  #9196a8;
  --text-subtle: #5a5f72;
  --red:         #e05555;
  --green:       #4caf82;
  --yellow:      #e0a055;
  --radius:      0.75rem;
  --radius-lg:   1rem;
  --dur:         0.22s;
  --ease:        cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 0.95rem;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Login ── */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 360px;
  text-align: center;
}
.login-card h1 { font-size: 1.5rem; margin-bottom: 0.25rem; }
.login-card p  { color: var(--text-muted); margin-bottom: 1.5rem; font-size: 0.88rem; }

/* ── App Shell ── */
#app { display: none; flex-direction: column; min-height: 100vh; }
#app.active { display: flex; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.topbar h1 { font-size: 1.1rem; color: var(--teal); }
.topbar button { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 0.88rem; }
.topbar button:hover { color: var(--red); }

.tabs {
  display: flex;
  gap: 0.25rem;
  padding: 0.75rem 1.25rem 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  background: var(--bg-card);
}
.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem 1rem;
  border-radius: var(--radius) var(--radius) 0 0;
  font-size: 0.88rem;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.tab-btn:hover    { color: var(--text); background: var(--bg-hover); }
.tab-btn.active   { color: var(--teal); border-bottom: 2px solid var(--teal); }

.tab-panel { display: none; padding: 1.5rem 1.25rem; }
.tab-panel.active { display: block; }

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.card h2 { font-size: 1rem; margin-bottom: 1rem; }

/* ── Form elements ── */
label { display: block; font-size: 0.82rem; color: var(--text-muted); margin-bottom: 0.3rem; }
input, select, textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 0.55rem 0.75rem;
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--dur) var(--ease);
}
input:focus, select:focus, textarea:focus { border-color: var(--teal); }
textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; gap: 0.75rem; margin-bottom: 0.75rem; }
.form-row.cols-2 { grid-template-columns: 1fr 1fr; }
.form-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  transition: opacity var(--dur) var(--ease);
}
.btn:hover         { opacity: 0.85; }
.btn:disabled      { opacity: 0.45; cursor: not-allowed; }
.btn-primary       { background: var(--teal); color: #000; }
.btn-danger        { background: var(--red); color: #fff; }
.btn-ghost         { background: var(--bg-hover); color: var(--text); }
.btn-sm            { padding: 0.3rem 0.7rem; font-size: 0.8rem; }

/* ── Table ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th { color: var(--text-muted); font-weight: 600; text-align: left; padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border); }
td { padding: 0.55rem 0.75rem; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-hover); }

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-green  { background: oklch(60% 0.18 155 / 20%); color: var(--green); }
.badge-red    { background: oklch(55% 0.2 25 / 20%);   color: var(--red); }
.badge-yellow { background: oklch(70% 0.18 75 / 20%);  color: var(--yellow); }
.badge-blue   { background: var(--teal-glow);           color: var(--teal); }

/* ── Stats row ── */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}
.stat-card .num  { font-size: 1.8rem; font-weight: 700; color: var(--teal); }
.stat-card .lbl  { font-size: 0.78rem; color: var(--text-muted); margin-top: 0.2rem; }

/* ── Toolbar ── */
.toolbar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 1rem;
}
.toolbar input, .toolbar select { width: auto; flex: 1; min-width: 140px; }

/* ── Toast ── */
#toast {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1.1rem;
  font-size: 0.88rem;
  max-width: 320px;
  z-index: 9999;
  transform: translateY(20px);
  opacity: 0;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
  pointer-events: none;
}
#toast.show { transform: translateY(0); opacity: 1; }
#toast.ok   { border-color: var(--green); color: var(--green); }
#toast.err  { border-color: var(--red);   color: var(--red); }

/* ── Checkbox list ── */
.contact-list {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
}
.contact-list label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.25rem;
  cursor: pointer;
  color: var(--text);
  font-size: 0.88rem;
  border-radius: 0.3rem;
}
.contact-list label:hover { background: var(--bg-hover); }
.contact-list input[type=checkbox] { width: auto; }

/* ── Modal ── */
.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 500;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.overlay.open { display: flex; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal h3    { margin-bottom: 1rem; }
.modal-btns  { display: flex; gap: 0.5rem; justify-content: flex-end; margin-top: 1rem; }

@media (max-width: 600px) {
  .form-row.cols-2, .form-row.cols-3 { grid-template-columns: 1fr; }
}