:root {
  --primary: #004B87;
  --dark: #003A5E;
  --accent: #FF6B35;
  --green: #4CAF50;
  --info-bg: #E8F4F8;
  --off-white: #f8fafc;
}

* { box-sizing: border-box; }
body { font-family: 'Open Sans', Arial, sans-serif; background: var(--off-white); margin: 0; color: #1a1a1a; }

.lentes-login-wrap {
  min-height: 80vh; display: flex; align-items: center; justify-content: center; padding: 24px;
}
.lentes-login-card {
  background: #fff; border-radius: 12px; padding: 40px; max-width: 380px; width: 100%;
  box-shadow: 0 10px 30px rgba(0,0,0,.08); text-align: center;
}
.lentes-login-card h1 { font-family: 'Montserrat', Arial, sans-serif; color: var(--dark); font-size: 24px; margin: 0 0 4px; }
.lentes-sub { color: #667; margin-bottom: 24px; }
.lentes-login-card form p { text-align: left; margin: 12px 0; }
.lentes-login-card input[type="text"],
.lentes-login-card input[type="password"] {
  width: 100%; padding: 10px 12px; border: 1px solid #ccd; border-radius: 8px; margin-top: 4px;
}
.lentes-login-card input[type="submit"] {
  background: var(--primary); color: #fff; border: none; border-radius: 8px; padding: 12px 20px;
  font-weight: 600; cursor: pointer; width: 100%; margin-top: 8px;
}
.lentes-alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; }
.lentes-alert-error { background: #fde8e8; color: #a11; }

#lentes-app { max-width: 960px; margin: 0 auto; padding: 24px 16px 60px; }
.lentes-topbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--dark); color: #fff; padding: 16px 20px; border-radius: 10px; margin-bottom: 20px;
  font-family: 'Montserrat', Arial, sans-serif;
}
.lentes-user { font-weight: 400; opacity: .85; font-size: 14px; }
.lentes-logout { color: #fff; opacity: .8; text-decoration: none; font-size: 14px; }
.lentes-logout:hover { opacity: 1; text-decoration: underline; }

.lentes-tabs { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }
.lentes-tab {
  background: #fff; border: 1px solid #dde; border-radius: 8px; padding: 10px 16px;
  cursor: pointer; font-weight: 600; color: var(--dark);
}
.lentes-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.lentes-panel { display: none; }
.lentes-panel.active { display: block; }

.lentes-form { background: #fff; padding: 24px; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.lentes-form h3 { font-family: 'Montserrat', Arial, sans-serif; color: var(--dark); margin-top: 0; }
.lentes-field { margin-bottom: 16px; }
.lentes-field-row { display: flex; gap: 16px; flex-wrap: wrap; }
.lentes-field-row .lentes-field { flex: 1; min-width: 160px; }
.lentes-field label { display: block; font-weight: 600; color: var(--dark); margin-bottom: 4px; font-size: 14px; }
.lentes-field input, .lentes-field select, .lentes-field textarea {
  width: 100%; padding: 9px 12px; border: 1px solid #ccd; border-radius: 8px; font-size: 15px;
}
.lentes-hint { font-size: 13px; color: var(--accent); display: block; margin-top: 4px; }

.lentes-btn-primary {
  background: var(--primary); color: #fff; border: none; border-radius: 8px; padding: 12px 24px;
  font-weight: 700; cursor: pointer; font-size: 15px;
}
.lentes-btn-primary:hover { background: var(--dark); }
.lentes-btn-secondary {
  background: var(--info-bg); color: var(--dark); border: 1px solid var(--primary);
  border-radius: 8px; padding: 9px 16px; cursor: pointer; font-weight: 600;
}
.lentes-feedback { margin-top: 12px; font-weight: 600; }
.lentes-feedback-ok { color: var(--green); }
.lentes-feedback-error { color: #c0392b; }

.lentes-filters { display: flex; gap: 10px; margin-bottom: 16px; }
.lentes-filters input { flex: 1; padding: 9px 12px; border: 1px solid #ccd; border-radius: 8px; }

.lentes-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 10px; overflow: hidden; }
.lentes-table th, .lentes-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #eee; font-size: 14px; }
.lentes-table th { background: var(--info-bg); color: var(--dark); font-family: 'Montserrat', Arial, sans-serif; }
.lentes-row-alerta { background: #fff3e0; }
.lentes-mono { font-family: monospace; font-size: 12px; color: #667; }

@media (max-width: 640px) {
  .lentes-topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
  .lentes-tabs { overflow-x: auto; }
}