:root {
  --venom-black: #0b0d10;
  --venom-dark: #14171c;
  --venom-panel: #1b1f26;
  --venom-border: #2a2f38;
  --venom-red: #e0202f;
  --venom-red-dark: #a8121e;
  --venom-text: #e8e9eb;
  --venom-text-dim: #9aa0aa;
  --venom-green: #2ecc71;
  --venom-amber: #f5a623;
  --radius: 10px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--venom-black);
  color: var(--venom-text);
}
a { color: var(--venom-red); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--venom-dark);
  border-right: 1px solid var(--venom-border);
  padding: 20px 0;
  display: flex;
  flex-direction: column;
}
.sidebar .brand {
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--venom-border);
  margin-bottom: 12px;
}
.sidebar .brand strong { color: var(--venom-red); font-size: 18px; letter-spacing: 0.5px; }
.sidebar .brand div { color: var(--venom-text-dim); font-size: 11px; margin-top: 2px; }
.sidebar nav { flex: 1; }
.sidebar .navgroup { padding: 10px 20px 4px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--venom-text-dim); }
.sidebar a.navlink {
  display: block;
  padding: 9px 20px;
  color: var(--venom-text);
  font-size: 14px;
}
.sidebar a.navlink:hover, .sidebar a.navlink.active {
  background: var(--venom-panel);
  color: #fff;
  text-decoration: none;
  border-left: 3px solid var(--venom-red);
  padding-left: 17px;
}
.sidebar .userbox { padding: 14px 20px; border-top: 1px solid var(--venom-border); font-size: 12px; color: var(--venom-text-dim); }
.sidebar .userbox strong { color: var(--venom-text); display: block; }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px; border-bottom: 1px solid var(--venom-border);
  background: var(--venom-dark);
}
.topbar h1 { font-size: 18px; margin: 0; font-weight: 600; }
.content { padding: 28px; flex: 1; }
footer.app-footer {
  padding: 14px 28px; border-top: 1px solid var(--venom-border);
  color: var(--venom-text-dim); font-size: 12px; display: flex; justify-content: space-between;
}

.card {
  background: var(--venom-panel);
  border: 1px solid var(--venom-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.card h2, .card h3 { margin-top: 0; }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.kpi { background: var(--venom-panel); border: 1px solid var(--venom-border); border-radius: var(--radius); padding: 16px; }
.kpi .label { color: var(--venom-text-dim); font-size: 12px; text-transform: uppercase; letter-spacing: .4px; }
.kpi .value { font-size: 26px; font-weight: 700; margin-top: 4px; }
.kpi .value.red { color: var(--venom-red); }
.kpi .value.green { color: var(--venom-green); }
.kpi .value.amber { color: var(--venom-amber); }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--venom-border); text-align: left; }
th { color: var(--venom-text-dim); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .3px; }
tr:hover td { background: rgba(255,255,255,0.02); }

.btn {
  display: inline-block; padding: 8px 16px; border-radius: 6px; border: 1px solid var(--venom-border);
  background: var(--venom-panel); color: var(--venom-text); cursor: pointer; font-size: 13.5px;
}
.btn:hover { text-decoration: none; border-color: var(--venom-text-dim); }
.btn-primary { background: var(--venom-red); border-color: var(--venom-red); color: #fff; }
.btn-primary:hover { background: var(--venom-red-dark); border-color: var(--venom-red-dark); }
.btn-whatsapp { background: #25D366; border-color: #25D366; color: #06210f; font-weight: 600; }
.btn-whatsapp:hover { background: #1ebe5a; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-danger { background: var(--venom-red-dark); border-color: var(--venom-red-dark); color: #fff; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.badge-new { background: #2c3a4d; color: #7db8f5; }
.badge-contacted { background: #3a3320; color: #f5c542; }
.badge-quoted { background: #3a2c1f; color: #f5a623; }
.badge-booked { background: #1f3a2c; color: #2ecc71; }
.badge-completed { background: #1f3a2c; color: #2ecc71; }
.badge-lost { background: #3a1f1f; color: #e0202f; }
.badge-draft { background: #2a2f38; color: #9aa0aa; }
.badge-sent { background: #2c3a4d; color: #7db8f5; }
.badge-paid { background: #1f3a2c; color: #2ecc71; }
.badge-overdue { background: #3a1f1f; color: #e0202f; }
.badge-partial { background: #3a3320; color: #f5c542; }
.badge-cancelled { background: #2a2f38; color: #9aa0aa; }

form label { display: block; font-size: 12.5px; color: var(--venom-text-dim); margin: 12px 0 4px; }
form input[type=text], form input[type=email], form input[type=password], form input[type=number],
form input[type=date], form input[type=tel], form select, form textarea {
  width: 100%; padding: 9px 10px; border-radius: 6px; border: 1px solid var(--venom-border);
  background: var(--venom-black); color: var(--venom-text); font-size: 14px;
}
form textarea { min-height: 80px; }
.form-row { display: flex; gap: 16px; }
.form-row > div { flex: 1; }

.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 13.5px; }
.flash-success { background: #1f3a2c; color: #2ecc71; }
.flash-error { background: #3a1f1f; color: #ff6b6b; }
.flash-warning { background: #3a3320; color: #f5c542; }

.text-dim { color: var(--venom-text-dim); }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-box { width: 360px; background: var(--venom-panel); border: 1px solid var(--venom-border); border-radius: var(--radius); padding: 32px; }
.login-box .brand { text-align: center; margin-bottom: 24px; }
.login-box .brand strong { color: var(--venom-red); font-size: 22px; }