:root {
  --k-dark: #0F172A;
  --k-primary: #2563EB;
  --k-light-blue: #60A5FA;
  --k-accent: #FBBF24;
  --k-bg: #F4F6FA;
  --k-white: #FFFFFF;
  --k-text: #1f2937;
  --k-muted: #64748b;
  --k-border: #dbe3f0;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", "Helvetica Neue", sans-serif; color: var(--k-text); background: var(--k-bg); }
a { text-decoration: none; }

.k-shell { display: flex; min-height: 100vh; }
.k-sidebar {
  width: 280px;
  background: linear-gradient(170deg, var(--k-dark), #13254b 72%);
  color: var(--k-white);
  padding: 22px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.k-brand { font-size: 26px; font-weight: 800; letter-spacing: .2px; }
.k-subtitle { margin-top: 4px; color: #c7d2fe; font-size: 13px; }
.k-nav { margin-top: 24px; display: flex; flex-direction: column; gap: 8px; }
.k-nav a {
  color: #cfd8ea;
  padding: 10px 12px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
}
.k-nav a:hover, .k-nav a.active {
  background: rgba(96, 165, 250, .17);
  color: #fff;
}

.k-main { flex: 1; padding: 20px 24px 28px; }
.k-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--k-white);
  border: 1px solid var(--k-border);
  border-radius: 12px;
  padding: 12px 16px;
}
.k-env {
  background: #fde68a;
  color: #78350f;
  font-size: 11px;
  font-weight: 800;
  border-radius: 999px;
  padding: 5px 10px;
  letter-spacing: .6px;
}
.k-userbox { display: flex; gap: 12px; align-items: center; }
.k-user { color: var(--k-muted); font-weight: 700; }
.k-content { margin-top: 18px; }

.k-title { margin: 0; font-size: 30px; color: var(--k-dark); }
.k-sub { margin: 6px 0 18px; color: var(--k-muted); }

.k-grid { display: grid; gap: 14px; }
.k-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.k-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 14px; }

.k-card, .k-panel {
  background: var(--k-white);
  border: 1px solid var(--k-border);
  border-radius: 14px;
  padding: 16px;
}
.k-card h3 { margin: 0 0 8px; color: var(--k-dark); }
.k-card p { margin: 0; font-size: 24px; font-weight: 700; color: var(--k-primary); }
.k-card-link p { font-size: 14px; color: var(--k-muted); }

.k-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.k-list li { display: flex; justify-content: space-between; gap: 12px; align-items: center; border-bottom: 1px dashed #e6edf9; padding-bottom: 8px; }

.k-badge { border-radius: 999px; padding: 4px 10px; font-size: 11px; font-weight: 800; }
.k-badge-verde { background: #dcfce7; color: #166534; }
.k-badge-amarillo { background: #fef3c7; color: #92400e; }
.k-badge-rojo { background: #fee2e2; color: #991b1b; }

.k-table { width: 100%; border-collapse: collapse; background: var(--k-white); }
.k-table th, .k-table td { border-bottom: 1px solid #e7edf8; padding: 10px 8px; text-align: left; }
.k-table th { color: #334155; font-size: 13px; }
.k-actions { display: flex; gap: 10px; align-items: center; }
.k-link { color: var(--k-primary); font-weight: 700; background: none; border: 0; cursor: pointer; padding: 0; }
.k-link-danger { color: #dc2626; }

.k-btn {
  border: 1px solid var(--k-border);
  background: var(--k-white);
  color: var(--k-dark);
  border-radius: 10px;
  padding: 9px 14px;
  font-weight: 700;
  cursor: pointer;
}
.k-btn-primary { background: var(--k-primary); border-color: var(--k-primary); color: var(--k-white); }
.k-btn-ghost { background: transparent; border-color: #cbd5e1; }

.k-inline-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.k-form, .k-form-grid { display: grid; gap: 10px; }
.k-form-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: var(--k-white);
  border: 1px solid var(--k-border);
  border-radius: 14px;
  padding: 16px;
}
.k-form-grid label { font-size: 13px; font-weight: 700; color: #334155; }
.k-form-grid input, .k-form-grid select, .k-form-grid textarea,
.k-form input {
  width: 100%;
  border: 1px solid #d5dfef;
  border-radius: 10px;
  padding: 10px;
  outline: none;
}
.k-form-actions { grid-column: 1 / -1; display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }
.k-alert {
  margin-top: 12px;
  border: 1px solid #bbf7d0;
  background: #f0fdf4;
  color: #166534;
  border-radius: 10px;
  padding: 10px 12px;
}
.k-alert-error {
  border-color: #fecaca;
  background: #fef2f2;
  color: #991b1b;
}

.k-login-body { background: radial-gradient(circle at top right, #dbeafe, #f8fafc 55%); min-height: 100vh; display: grid; place-items: center; }
.k-login-card {
  width: min(420px, 92vw);
  background: var(--k-white);
  border: 1px solid var(--k-border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}
.k-login-card h1 { margin: 0; font-size: 30px; color: var(--k-dark); }
.k-login-card p { margin: 5px 0 10px; color: var(--k-muted); }

@media (max-width: 1100px) {
  .k-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .k-shell { flex-direction: column; }
  .k-sidebar { width: 100%; height: auto; position: relative; }
  .k-grid-2, .k-grid-3, .k-form-grid { grid-template-columns: 1fr; }
  .k-inline-head { flex-direction: column; align-items: flex-start; }
}

.k-filter-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}
.k-filter-grid label { font-size: 12px; font-weight: 700; color: #334155; }
.k-filter-grid select,
.k-filter-grid input {
  width: 100%;
  border: 1px solid #d5dfef;
  border-radius: 10px;
  padding: 8px;
}
.k-filter-actions {
  grid-column: span 1;
  display: flex;
  align-items: flex-end;
  gap: 8px;
}
.k-col-span-2 { grid-column: 1 / -1; }
.k-help-box {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 10px;
  padding: 12px;
  color: #1e3a8a;
  font-size: 13px;
}
.k-check-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}